CN117255544A - Control method and device of base station air conditioner, base station air conditioner and storage medium - Google Patents
Control method and device of base station air conditioner, base station air conditioner and storage medium Download PDFInfo
- Publication number
- CN117255544A CN117255544A CN202311541391.3A CN202311541391A CN117255544A CN 117255544 A CN117255544 A CN 117255544A CN 202311541391 A CN202311541391 A CN 202311541391A CN 117255544 A CN117255544 A CN 117255544A
- Authority
- CN
- China
- Prior art keywords
- base station
- air conditioner
- station air
- controlling
- inner tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 86
- 238000005338 heat storage Methods 0.000 claims abstract description 69
- 239000007788 liquid Substances 0.000 claims description 119
- 239000003507 refrigerant Substances 0.000 claims description 59
- 230000009467 reduction Effects 0.000 claims description 27
- 238000001816 cooling Methods 0.000 claims description 21
- 230000008569 process Effects 0.000 description 37
- 238000005057 refrigeration Methods 0.000 description 26
- 230000000694 effects Effects 0.000 description 19
- 238000001704 evaporation Methods 0.000 description 16
- 230000002265 prevention Effects 0.000 description 11
- 238000013461 design Methods 0.000 description 10
- 230000008020 evaporation Effects 0.000 description 10
- 238000009833 condensation Methods 0.000 description 9
- 230000005494 condensation Effects 0.000 description 9
- 238000009413 insulation Methods 0.000 description 9
- 230000008859 change Effects 0.000 description 8
- 238000004891 communication Methods 0.000 description 8
- 239000012774 insulation material Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000004146 energy storage Methods 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 239000007791 liquid phase Substances 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000004781 supercooling Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 230000001413 cellular effect Effects 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 239000012792 core layer Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000011232 storage material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2029—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant with phase change in electronic enclosures
- H05K7/20354—Refrigerating circuit comprising a compressor
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2029—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant with phase change in electronic enclosures
- H05K7/20309—Evaporators
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2029—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant with phase change in electronic enclosures
- H05K7/20318—Condensers
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2029—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant with phase change in electronic enclosures
- H05K7/20327—Accessories for moving fluid, for connecting fluid conduits, for distributing fluid or for preventing leakage, e.g. pumps, tanks or manifolds
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2029—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant with phase change in electronic enclosures
- H05K7/20381—Thermal management, e.g. evaporation control
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention belongs to the technical field of base station air conditioners, and discloses a control method and device of a base station air conditioner, the base station air conditioner and a storage medium, wherein the method comprises the following steps: under the condition that the base station air conditioner is started and runs in a refrigerating mode, acquiring the tube temperature of the indoor side heat exchanger, and recording the tube temperature as the current inner tube temperature of the base station air conditioner; the pressure of an exhaust port of the compressor is obtained and is recorded as the current exhaust pressure of the base station air conditioner; controlling the opening and closing of the switch device according to the current inner tube temperature of the base station air conditioner, and controlling the opening of the throttling device; or, according to the current inner pipe temperature of the base station air conditioner, controlling the opening and closing of the switch device and controlling the opening of the throttling device; and controlling the rotating speed of the outdoor fan of the base station air conditioner according to the current inner pipe temperature of the base station air conditioner and/or the current exhaust pressure of the base station air conditioner. According to the scheme, the base station air conditioner has the functions of heat storage and flow control, so that the operation stability of the base station air conditioner is improved.
Description
Technical Field
The invention belongs to the technical field of base station air conditioners, and particularly relates to a control method and device of a base station air conditioner, a base station air conditioner and a storage medium, and particularly relates to a control method and device of a base station air conditioner with a heat storage function, a base station air conditioner and a storage medium.
Background
And the unit air conditioner (namely the base station air conditioner) of the communication base station is used for cooling the heating equipment in the communication base station. For the refrigeration system of the base station air conditioner, the evaporating temperature is most ideal to be kept constant at about 30 ℃. However, since a considerable part of the communication base station is constructed in the open air with high altitude, the temperature difference between day and night is large, and the room environment is relatively closed. In extreme environment, when the daytime temperature is higher, the outdoor temperature can reach 25-35 ℃, the condensing temperature of a condenser of the base station air conditioner is increased, and then the evaporating temperature is higher, and the refrigerating capacity is reduced; the outside temperature drops to 0 ℃ or even lower at night, so that the condensation temperature of the condenser of the base station air conditioner is reduced, the evaporation temperature is lower than the dew point temperature of air, the surface condensed water of the evaporator is increased, the sensible heat ratio of the base station air conditioner is reduced, and the requirement of the base station air conditioner on high sensible heat ratio is not met. Therefore, under the condition that the temperature difference between day and night of the environment where the base station air conditioner is located is large, the pressure and temperature fluctuation of the refrigerating system of the base station air conditioner is large, and the operation stability of the base station air conditioner is affected.
The foregoing is provided merely for the purpose of facilitating understanding of the technical solutions of the present invention and is not intended to represent an admission that the foregoing is prior art.
Disclosure of Invention
The invention aims to provide a control method, a control device and a base station air conditioner and a storage medium of the base station air conditioner, so as to solve the problems that the pressure and the temperature fluctuation of a refrigerating system of the base station air conditioner are larger and the operation stability of the base station air conditioner is influenced under the condition that the temperature difference between the day and the night of the environment of the base station air conditioner is large, and achieve the effects that the base station air conditioner has the functions of heat storage and flow control, the pressure and the temperature fluctuation of the refrigerating system of the base station air conditioner are larger under the condition that the temperature difference between the day and the night is large, and the operation stability of the base station air conditioner is improved.
The invention provides a control method of a base station air conditioner, which comprises a compressor, an outdoor side heat exchanger, a throttling device and an indoor side heat exchanger, wherein the compressor is connected with the outdoor side heat exchanger; the refrigerant discharged from the exhaust port of the compressor returns to the air suction port of the compressor after passing through the outdoor side heat exchanger, the throttling device and the indoor side heat exchanger; a heat storage and liquid storage device is arranged between the outdoor side heat exchanger and the throttling device; the heat storage and liquid storage device is provided with a first inlet, a second inlet and a first outlet; the outdoor side heat exchanger is communicated with a first inlet of the heat storage and liquid storage device, and a first outlet of the heat storage and liquid storage device is communicated with the throttling device; a bypass pipeline is arranged between the exhaust port of the compressor and the second inlet of the heat storage and liquid storage device; a switch device is arranged on the bypass pipe; the control method of the base station air conditioner comprises the following steps: under the condition that the base station air conditioner is started and runs in a refrigerating mode, acquiring the tube temperature of the indoor side heat exchanger, and recording the tube temperature as the current inner tube temperature of the base station air conditioner; the pressure of the exhaust port of the compressor is obtained and is recorded as the current exhaust pressure of the base station air conditioner; controlling the opening and closing of the switching device and controlling the opening of the throttling device according to the current inner tube temperature of the base station air conditioner; or controlling the opening and closing of the switching device and controlling the opening of the throttling device according to the current inner tube temperature of the base station air conditioner; and controlling the rotating speed of an outdoor fan of the base station air conditioner according to the current inner pipe temperature of the base station air conditioner and/or the current exhaust pressure of the base station air conditioner.
In some embodiments, according to the current inner pipe temperature of the base station air conditioner, controlling the opening and closing of the switching device and controlling the opening of the throttling device, including: determining whether the current inner tube temperature of the base station air conditioner is smaller than a preset first inner tube temperature threshold value; and if the current inner tube temperature of the base station air conditioner is smaller than the preset first inner tube temperature threshold value, controlling the switching device to be turned on, and controlling the opening of the throttling device to be increased.
In some embodiments, controlling the rotational speed of the outdoor fan of the base station air conditioner according to the current inner pipe temperature of the base station air conditioner and/or the current discharge pressure of the base station air conditioner comprises: after controlling the opening and closing of the switching device and controlling the opening of the throttling device, determining whether the current inner tube temperature of the base station air conditioner is smaller than a preset second inner tube temperature threshold value; if the current inner tube temperature of the base station air conditioner is determined to be smaller than a preset second inner tube temperature threshold value, controlling the rotation speed of the outdoor fan to be reduced, and controlling the outdoor fan to operate according to the rotation speed after the reduction; continuously controlling the rotating speed of an outdoor fan of the base station air conditioner according to the current inner pipe temperature of the base station air conditioner; and/or continuously controlling the rotating speed of the outdoor fan of the base station air conditioner according to the current exhaust pressure of the base station air conditioner.
In some embodiments, the method further comprises continuously controlling the rotation speed of the outdoor fan of the base station air conditioner according to the current inner tube temperature of the base station air conditioner, including: determining whether the current inner tube temperature of the base station air conditioner is greater than or equal to a preset inner tube temperature target value; if the current inner tube temperature of the base station air conditioner is determined to be greater than or equal to the preset inner tube temperature target value, stopping continuously controlling the rotating speed of the outdoor fan of the base station air conditioner, and controlling the rotating speed of the outdoor fan to be restored to the rotating speed operation before the control of the rotating speed of the outdoor fan; if the current inner tube temperature of the base station air conditioner is determined to be smaller than the preset inner tube temperature target value, returning to continuously control the rotation speed of the outdoor fan to be reduced, and controlling the outdoor fan to operate according to the rotation speed after the reduction; and/or, continuously controlling the rotation speed of the outdoor fan of the base station air conditioner according to the current exhaust pressure of the base station air conditioner, including: determining whether the current exhaust pressure of the base station air conditioner is greater than or equal to a preset exhaust pressure value; if the current exhaust pressure of the base station air conditioner is determined to be greater than or equal to a preset exhaust pressure value, stopping continuously controlling the rotating speed of an outdoor fan of the base station air conditioner, and controlling the outdoor fan to operate according to the current rotating speed; and if the current exhaust pressure of the base station air conditioner is smaller than the preset exhaust pressure value, returning to continuously control the rotation speed of the outdoor fan to be reduced, and controlling the outdoor fan to operate according to the rotation speed after the reduction.
In accordance with the above method, another aspect of the present invention provides a control device for a base station air conditioner, where the base station air conditioner includes a compressor, an outdoor side heat exchanger, a throttling device, and an indoor side heat exchanger; the refrigerant discharged from the exhaust port of the compressor returns to the air suction port of the compressor after passing through the outdoor side heat exchanger, the throttling device and the indoor side heat exchanger; a heat storage and liquid storage device is arranged between the outdoor side heat exchanger and the throttling device; the heat storage and liquid storage device is provided with a first inlet, a second inlet and a first outlet; the outdoor side heat exchanger is communicated with a first inlet of the heat storage and liquid storage device, and a first outlet of the heat storage and liquid storage device is communicated with the throttling device; a bypass pipeline is arranged between the exhaust port of the compressor and the second inlet of the heat storage and liquid storage device; a switch device is arranged on the bypass pipe; the control device of the base station air conditioner comprises: an acquisition unit configured to acquire a tube temperature of the indoor side heat exchanger, as a current inner tube temperature of the base station air conditioner, in a case where the base station air conditioner is started and operates in a cooling mode; the pressure of the exhaust port of the compressor is obtained and is recorded as the current exhaust pressure of the base station air conditioner; the control unit is configured to control the opening and closing of the switching device and the opening of the throttling device according to the current inner pipe temperature of the base station air conditioner; or the control unit is further configured to control the opening and closing of the switching device and the opening of the throttling device according to the current inner pipe temperature of the base station air conditioner; and controlling the rotating speed of an outdoor fan of the base station air conditioner according to the current inner pipe temperature of the base station air conditioner and/or the current exhaust pressure of the base station air conditioner.
In some embodiments, the control unit controls the opening and closing of the switching device and controls the opening of the throttling device according to the current inner tube temperature of the base station air conditioner, and includes: determining whether the current inner tube temperature of the base station air conditioner is smaller than a preset first inner tube temperature threshold value; and if the current inner tube temperature of the base station air conditioner is smaller than the preset first inner tube temperature threshold value, controlling the switching device to be turned on, and controlling the opening of the throttling device to be increased.
In some embodiments, the control unit controls the rotation speed of the outdoor fan of the base station air conditioner according to the current inner pipe temperature of the base station air conditioner and/or the current discharge pressure of the base station air conditioner, including: after controlling the opening and closing of the switching device and controlling the opening of the throttling device, determining whether the current inner tube temperature of the base station air conditioner is smaller than a preset second inner tube temperature threshold value; if the current inner tube temperature of the base station air conditioner is determined to be smaller than a preset second inner tube temperature threshold value, controlling the rotation speed of the outdoor fan to be reduced, and controlling the outdoor fan to operate according to the rotation speed after the reduction; continuously controlling the rotating speed of an outdoor fan of the base station air conditioner according to the current inner pipe temperature of the base station air conditioner; and/or continuously controlling the rotating speed of the outdoor fan of the base station air conditioner according to the current exhaust pressure of the base station air conditioner.
In some embodiments, the control unit continuously controls the rotation speed of the outdoor fan of the base station air conditioner according to the current inner tube temperature of the base station air conditioner, including: determining whether the current inner tube temperature of the base station air conditioner is greater than or equal to a preset inner tube temperature target value; if the current inner tube temperature of the base station air conditioner is determined to be greater than or equal to the preset inner tube temperature target value, stopping continuously controlling the rotating speed of the outdoor fan of the base station air conditioner, and controlling the rotating speed of the outdoor fan to be restored to the rotating speed operation before the control of the rotating speed of the outdoor fan; if the current inner tube temperature of the base station air conditioner is determined to be smaller than the preset inner tube temperature target value, returning to continuously control the rotation speed of the outdoor fan to be reduced, and controlling the outdoor fan to operate according to the rotation speed after the reduction; and/or, the control unit continuously controls the rotation speed of the outdoor fan of the base station air conditioner according to the current exhaust pressure of the base station air conditioner, and the control unit comprises: determining whether the current exhaust pressure of the base station air conditioner is greater than or equal to a preset exhaust pressure value; if the current exhaust pressure of the base station air conditioner is determined to be greater than or equal to a preset exhaust pressure value, stopping continuously controlling the rotating speed of an outdoor fan of the base station air conditioner, and controlling the outdoor fan to operate according to the current rotating speed; and if the current exhaust pressure of the base station air conditioner is smaller than the preset exhaust pressure value, returning to continuously control the rotation speed of the outdoor fan to be reduced, and controlling the outdoor fan to operate according to the rotation speed after the reduction.
In accordance with another aspect of the present invention, there is provided a base station air conditioner comprising: the control device of the base station air conditioner.
In accordance with the above method, a further aspect of the present invention provides a storage medium, where the storage medium includes a stored program, and when the program runs, the device where the storage medium is controlled to execute the above control method of the base station air conditioner.
Therefore, according to the scheme of the invention, a heat storage and liquid storage device is arranged between the outdoor side heat exchanger and the throttling device for the base station air conditioner; a bypass branch is arranged between an exhaust port of the compressor and the space above the heat storage and liquid storage device, and a switch device (such as an electronic valve) is arranged on the bypass branch; under the condition of the base station air conditioner refrigeration operation, controlling the opening and closing of the switching device and the opening of the throttling device according to the pipe temperature of the indoor side heat exchanger, so as to realize the exhaust bypass control of the compressor; according to the pipe temperature of the indoor side heat exchanger and/or the exhaust pressure of the compressor, controlling the rotating speed of the outdoor fan to control the rotating speed of the low-temperature-resistant outdoor fan; therefore, the base station air conditioner has the functions of heat storage and flow control, so that the pressure and temperature fluctuation of the refrigerating system of the base station air conditioner are avoided to be large under the condition of large day and night temperature difference, and the operation stability of the base station air conditioner is improved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
Drawings
FIG. 1 is a flow chart of a control method of a base station air conditioner according to an embodiment of the present invention;
FIG. 2 is a flow chart of an embodiment of the method of the present invention for controlling opening and closing of a switching device and opening of a throttling device based on the current inner tube temperature;
FIG. 3 is a flow chart of an embodiment of the method of the present invention for controlling the rotational speed of an outdoor fan based on the current inner tube temperature and/or the current discharge pressure;
FIG. 4 is a flow chart illustrating an embodiment of the method of the present invention for continuously controlling the rotational speed of the outdoor fan according to the current inner tube temperature;
FIG. 5 is a flow chart illustrating an embodiment of the method of the present invention for continuously controlling the rotational speed of the outdoor fan based on the current discharge pressure;
FIG. 6 is a schematic diagram of a control device of a base station air conditioner according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of an embodiment of a base station air conditioner with heat storage function;
Fig. 8 is a flow chart of an embodiment of a control method of a base station air conditioner with heat storage function.
In the embodiment of the present invention, reference numerals are as follows, in combination with the accompanying drawings:
1-a compressor; 2-a gas-liquid separator; 3-four-way valve; 4-an outdoor heat exchanger; 5-an outdoor fan; 6-an electronic valve; 7-a liquid storage tank; 8-a throttle valve; 9-an indoor heat exchanger; 10-an indoor fan; 102-an acquisition unit; 104-a control unit.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to specific embodiments of the present invention and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The refrigerating capacity of the base station air conditioner is divided into sensible heat and latent heat, wherein the sensible heat is a part for reducing the air temperature in the refrigerating capacity, and the latent heat is a part for condensing water vapor into water, namely a dehumidifying part; the sensible heat ratio of the base station air conditioner is the ratio of the two (i.e., the ratio of the apparent to the latent heat). The communication base station apparatus generates only a fixed sensible heat, and the operating environment is closed and dried for a long period of time. For the characteristics of the heat load, the higher the sensible heat ratio of the base station air conditioner is, the higher the utilization rate of the refrigerating capacity of the base station air conditioner is, and the better the energy-saving effect is. In the related scheme, the rotating speed of an indoor fan of the base station air conditioner is increased, and the air outlet temperature is higher than the dew point temperature of air in a mode of increasing the air quantity so as to meet the requirement of the base station air conditioner on high sensible heat ratio; or the rotation speed of the outdoor fan is reduced to increase the temperature of the refrigerant.
In view of the above, in the related solution, the base station unit type air conditioner (i.e. base station air conditioner) is to adjust the rotation speed of the outdoor side fan, increase the rotation speed when the outside temperature is higher, and increase the supercooling degree of the refrigerant so as to increase the refrigerating capacity of the base station air conditioner; and when the outside temperature is low, the rotating speed is reduced, and the evaporating temperature is increased at the expense of the total refrigerating capacity, so that the refrigerating sensible heat ratio of the base station air conditioner is increased. The method is simple to operate, but achieves limited technical effects. The rotation speed of the outdoor fan is reduced, heat exchange is poor, the temperature of the refrigerant in the high-pressure section at the outdoor side is increased, and the temperature of the refrigerant at the indoor side is higher than the dew point temperature. However, the temperature increases and the pressure itself at a high level increases further. Therefore, the adjusting means is a double-sided blade, and the pressure can not overshoot (for example, lower than 4 Mpa) is required to be exerted.
Therefore, the condensing pressure can be increased by reducing the rotating speed of the outdoor fan, if the rotating speed is excessively reduced, pressure overshoot can be caused, and the reduction is excessively reduced, so that the evaporating temperature is not increased; in a low-temperature environment, the problem of refrigerant flow reduction caused by suction pressure reduction is difficult to solve. If a variable frequency compressor is used, the above problems can be solved by reducing the frequency of the compressor. However, unlike general comfort air conditioner, the heat source and the heat load of the equipment in the base station are basically unchanged, and the equipment needs to run continuously for a long time of 24 hours, and the fixed-frequency compressor with relatively constant refrigerating capacity and relatively low cost is a better choice. And the compressor is operated at low frequency in a low temperature environment, there may be a risk of liquid hammer. The general variable frequency compressor has the limitation of reducing the frequency of the low-temperature environment, and after the lower limit of the operating frequency is reached, the rotation speed of the outdoor fan still needs to be controlled for adjustment.
Therefore, the scheme of the invention provides a control method of the base station air conditioner, in particular to a control method of the base station air conditioner with a heat storage function, which is characterized in that a liquid storage tank with a heat insulation function is additionally connected in series between an outdoor side heat exchanger and a throttling device; a branch is arranged to connect the exhaust port of the compressor and the space above the liquid storage tank, and an electronic valve is arranged to control the on-off of the branch; according to the tube temperature of the evaporator, the electronic valve is controlled to be opened and closed, the opening of the throttle valve is controlled, and the exhaust bypass control of the compressor and the rotation speed control of the outdoor fan under the condition of low temperature prevention are realized, so that the base station air conditioner provided by the scheme of the invention has the functions of heat storage and flow control, avoids larger pressure and temperature fluctuation of a refrigerating system of the base station air conditioner under the condition of large day and night temperature difference, and is beneficial to improving the operation stability of the base station air conditioner.
According to an embodiment of the present invention, a control method of a base station air conditioner is provided, and a flow chart of an embodiment of the method of the present invention is shown in fig. 1. The base station air conditioner is provided with a compressor, an outdoor side heat exchanger, a throttling device and an indoor side heat exchanger, such as a compressor 1, an outdoor heat exchanger 4, a throttling valve 8 and an indoor heat exchanger 9; the refrigerant discharged from the exhaust port of the compressor returns to the air suction port of the compressor after passing through the outdoor side heat exchanger, the throttling device and the indoor side heat exchanger; a heat storage and liquid storage device (such as a liquid storage tank 7) is arranged between the outdoor side heat exchanger and the throttling device; the heat storage and liquid storage device is provided with a first inlet, a second inlet and a first outlet; the outdoor side heat exchanger is communicated with a first inlet of the heat storage and liquid storage device, and a first outlet of the heat storage and liquid storage device is communicated with the throttling device; a bypass pipeline is arranged between the exhaust port of the compressor and the second inlet of the heat storage and liquid storage device; a switching device (e.g. an electronic valve 6) is arranged in the bypass line.
Specifically, fig. 7 is a schematic structural diagram of an embodiment of a base station air conditioner with heat storage function. Referring to the example shown in fig. 7, a cellular air conditioner (i.e., a base station air conditioner) of a communication base station should be provided with at least: a compressor (which may be a fixed frequency compressor or a variable frequency compressor, such as the compressor 1 shown in fig. 7), an outdoor side heat exchanger and fan (such as the outdoor heat exchanger 4 and the outdoor fan 5 shown in fig. 7), a throttle device (such as the throttle valve 8 shown in fig. 7, which may be an electronic expansion valve), and an indoor side heat exchanger and fan (such as the indoor heat exchanger 9 and the indoor fan 10 shown in fig. 7). Of course, the present invention may further include: a four-way valve (four-way valve 3 shown in fig. 7), and a gas-liquid separator (gas-liquid separator 2 shown in fig. 7). In the solution of the present invention, a liquid storage tank (liquid storage tank 7 shown in fig. 7) with a heat insulation function is additionally connected in series between the outdoor heat exchanger (outdoor heat exchanger 4 shown in fig. 7) and the throttling device (throttle valve 8 shown in fig. 7). The inner layer and the outer layer of the liquid storage tank 7 are made of steel plates, and the core layer is made of heat insulation materials with high heat resistance, and the heat insulation materials can be heat insulation materials such as materials used for thermos bottles. As shown in fig. 7, the base station air conditioner with heat storage function includes: compressor 1, gas-liquid separator 2, cross valve 3, outdoor heat exchanger 4, outdoor fan 5, electronic valve 6, liquid storage tank 7, choke valve 8, indoor heat exchanger 9 and indoor fan 10. Wherein, the exhaust port of the compressor 1 is communicated with the second valve port of the four-way valve 3; the first valve port of the four-way valve 3 is communicated to the third valve port of the four-way valve 3 after passing through the outdoor heat exchanger 4, the liquid storage tank 7, the throttle valve 8 and the indoor heat exchanger 9; the fourth port of the four-way valve 3 passes through the gas-liquid separator 2 and returns to the suction port of the compressor 1. The discharge port of the compressor 1 is also connected to the head space of the liquid storage tank 7 after passing through the electronic valve 6. The outdoor fan 5 is disposed at the outdoor heat exchanger 4, and the indoor fan 10 is disposed at the indoor heat exchanger 9.
In the refrigeration mode, the high-temperature and high-pressure gaseous refrigerant at the exhaust outlet of the compressor 1 enters the outdoor condenser (namely the outdoor heat exchanger 4) to perform condensation heat release, is converted into liquid refrigerant, then enters the throttle valve 8 to throttle, is converted into low-temperature and low-pressure refrigerant, then enters the indoor evaporator (namely the indoor heat exchanger 9) to perform evaporation heat absorption, and finally returns to the air suction port of the compressor 1 to complete compression, thereby forming a cycle.
When the day-night temperature difference is large, the daytime temperature is high, the temperature of the condensation side (namely the outdoor heat exchanger 4) rises, the high-temperature refrigerant enters the liquid storage tank 7 from the condenser (namely the outdoor heat exchanger 4) at the moment, heat is stored in the liquid storage tank 7, and the supercooling degree of the refrigerant is basically unchanged; the temperature at night drops, the refrigerant at low temperature at the condensation side (i.e. the outdoor heat exchanger 4) is heated by the high-temperature refrigerant stored in the daytime, so that the temperature is recovered to a normal level, and the cycle is repeated so that the excessive heat in the daytime is released at night, and the evaporation pressure and the temperature of the indoor side evaporator (i.e. the indoor heat exchanger 9) are kept at a stable level.
Referring to the example shown in fig. 7, the above-described cooling mode is difficult to be effective when the heat stored during the day is insufficient. When the suction pressure and the discharge pressure of the compressor 1 decrease and the evaporation temperature of the indoor side evaporator (i.e., the indoor heat exchanger 9) is low, the base station air conditioner is caused to enter the exhaust bypass control. A branch is designed to connect the exhaust port of the compressor 1 with the space above the liquid storage tank 7, and is provided with an electronic valve 6 for control. Further, if the above-mentioned functional mode still does not reach the ideal effect, the rotational speed control of the outdoor fan is performed under the condition of low temperature prevention.
In the scheme of the present invention, as shown in fig. 1, the control method of the base station air conditioner includes: step S110 to step S130.
In step S110, in the case where the base station air conditioner is started and operates in the cooling mode, the tube temperature of the indoor side heat exchanger is obtained and recorded as the current inner tube temperature of the base station air conditioner (e.g., the tube temperature T of the evaporator Inner pipe ) The method comprises the steps of carrying out a first treatment on the surface of the And the pressure of the exhaust port of the compressor is obtained and recorded as the current exhaust pressure of the base station air conditioner (such as the exhaust pressure P of the compressor 1 Exhaust gas ）。
In step S120, in the process of cooling operation of the base station air conditioner, according to the current inner tube temperature of the base station air conditioner, the opening and closing of the switching device are controlled, and the opening of the throttling device is controlled. Or,
at step S130, in the process of the cooling operation of the base station air conditioner, according to the current inner pipe temperature of the base station air conditioner, controlling the opening and closing of the switching device, and controlling the opening of the throttling device; and controlling the rotating speed of an outdoor fan of the base station air conditioner according to the current inner pipe temperature of the base station air conditioner and/or the current exhaust pressure of the base station air conditioner.
According to the control scheme of the base station air conditioner with the heat storage function, a liquid storage tank with a heat insulation function is additionally connected in series between an outdoor side heat exchanger and a throttling device; a branch is arranged to connect the exhaust port of the compressor and the space above the liquid storage tank, and an electronic valve is arranged to control the on-off of the branch; according to the tube temperature of the evaporator, the electronic valve is controlled to open and close, the opening of the throttle valve is controlled, the exhaust bypass control of the compressor and the rotation speed control of the outdoor fan under the condition of low temperature prevention are realized, the problems of pressure and temperature fluctuation of a refrigerating system of the base station air conditioner caused by large day-night temperature difference are solved, the problem of flow reduction caused by pressure reduction during winter operation of the base station air conditioner is also solved, the base station air conditioner has the functions of heat storage and flow control, the pressure and temperature fluctuation of the refrigerating system of the base station air conditioner are avoided to be large under the condition of large day-night temperature difference, and the operation stability of the base station air conditioner is improved.
The high specific heat capacity is one of the main characteristics of the refrigerant, so that the refrigerant is directly used as an energy storage working medium in the refrigeration system, the structure of the base station air conditioner is simple, and the cost for searching additional energy storage materials is saved. Therefore, a liquid storage tank with a heat insulation function is connected in series between the outer condenser and the throttling device. After the temperature of the refrigerant at the outlet of the condenser is neutralized in the liquid storage tank, the refrigerant enters the throttling device, so that the change of the outside environment temperature can be delayed to act on the refrigerant before the throttling device. Thus, the heat generated during the daytime does not immediately cause the temperature and pressure of the refrigerant to change, but is stored in the liquid storage tank; when the temperature at night is reduced, the heat stored in the liquid storage tank is released to the refrigerating system again; similarly, the cold energy at night can be stored in daytime, so that the effects of peak clipping and valley filling are achieved. Thus, the larger the reservoir volume should be, the higher the heat it can store, and the better the utility.
In addition, because the heat generated during winter operation is insufficient in daytime, the condensing pressure and the evaporating pressure of the control system of the base station air conditioner with the heat storage function are lower, so that the flow of the refrigerant is reduced and the refrigerating capacity is reduced. Therefore, in the scheme of the invention, a branch is designed to be connected with the upper space of the exhaust port of the compressor and the liquid storage tank, and is provided with an electronic valve for control. When the tube temperature of the evaporator is detected to be too low, the electronic valve is controlled to be opened, and the gaseous high-temperature high-pressure refrigerant at the partial exhaust outlet of the compressor directly enters the liquid storage tank from the upper part; at the same time, the throttle opening is increased, so that the outlet flow of the throttle valve is increased. The purpose of this design is: 1. the high-temperature refrigerant at the exhaust outlet of the compressor is used for providing heat for the liquid storage tank, so that the temperature of the refrigerant before throttling of the throttling device is improved; 2. the refrigerant at the inlet of the liquid storage tank is changed from pure liquid phase to gas-liquid phase, and the outlet is still in liquid state, so that the mass of the refrigerant in the liquid storage tank is reduced, the mass flow entering the refrigeration system is increased, and the problem of flow reduction caused by pressure reduction is solved.
In some arrangements, the refrigerant is used directly as a coolant to provide a natural cooling effect by shorting the compressor, i.e., equivalent to disabling the refrigeration system. Such a design gives up a refrigeration system and cannot guarantee stability for the refrigeration effect. For example, the problem of air outlet temperature is solved, and the air outlet temperature is changed along with the change of outdoor environment temperature by adopting the scheme, and is not in line with the requirement of maintaining constant working temperature of communication base station equipment. The scheme of the invention can ensure the stability of the refrigerating system and prevent the refrigerating system from being influenced by environmental factors.
In other schemes, the liquid storage tank is used as a container for accumulating liquid refrigeration working media, so that the effects of generating pressure difference and pushing the system mode to switch are realized, and the capacity is limited by the design pressure difference. According to the scheme, the liquid storage tank with the heat insulation function is connected in series between the outer condenser and the throttling device, so that heat generated in daytime can not immediately cause temperature and pressure change of the refrigerant, but is stored in the liquid storage tank, and when the temperature is reduced at night, the stored heat is released into the refrigerating system again, so that the effects of peak clipping and valley filling are achieved. The design purpose of the liquid storage tank in the scheme of the invention is to absorb heat of the external environment higher or lower than the average value, and the liquid storage tank has a buffering effect, so that a heat insulation material is needed, and the capacity is as large as possible. Likewise, in order to ensure the stability of the operation of the refrigeration system, the heat exchange effect of the outdoor side needs to be reduced in the low-temperature environment. The exhaust bypass can be simply understood that a part of the condenser is short-circuited, and the part of the refrigerant directly enters the throttling device without passing through the condenser, and in addition, the compression resistance problem of the refrigerating system can be effectively improved due to the design of the high-capacity liquid storage tank.
In some embodiments, in the process of the cooling operation of the base station air conditioner in step S120 or step S130, according to the current inner tube temperature of the base station air conditioner, the opening and closing of the switching device are controlled, and the specific process of controlling the opening of the throttling device is described in the following exemplary description.
The following is a schematic flow chart of an embodiment of the method of the present invention for controlling the opening and closing of the switching device and the opening of the throttling device according to the current inner pipe temperature in connection with the method of the present invention shown in fig. 2, further describing a specific process of controlling the opening and closing of the switching device and the opening of the throttling device according to the current inner pipe temperature in step S120 or step S130, including: step S210 to step S220.
Step S210, determining whether the current inner tube temperature of the base station air conditioner is smaller than a preset first inner tube temperature threshold value. Wherein the preset first inner tube temperature threshold, such as temperature T Refrigerating low-load inner tube temperature threshold 1 。
Step S220, if it is determined that the current inner tube temperature of the base station air conditioner is less than the preset first inner tube temperature threshold, controlling the switching device to be turned on, and controlling the opening of the throttling device to be increased.
Specifically, fig. 8 is a flow chart of an embodiment of a control method of a base station air conditioner with heat storage function. As shown in fig. 8, the control method of the base station air conditioner with the heat storage function includes:
Step 1, after a base station air conditioner is started and a refrigeration mode is operated, detecting the tube temperature T of an evaporator Inner pipe And detects the discharge pressure P of the compressor 1 Exhaust gas Step 2 is then performed.
Step 2, judging whether the tube temperature T of the evaporator is met Inner pipe < temperature T Refrigerating low-load inner tube temperature threshold 1 (e.g. 10 ℃ to 20 ℃): if yes, executing the step 3, otherwise, continuing to wait in the step 2.
Step 3, when the tube temperature T of the evaporator is detected Inner pipe Below temperature T Refrigerating low-load inner tube temperature threshold 1 When the electronic valve 6 is controlled to be opened, the gaseous high-temperature high-pressure refrigerant at a part of the exhaust outlet of the compressor 1 directly enters the liquid storage tank 7 from the upper part of the liquid storage tank 7; at the same time, the opening of the throttle valve 8 is controlled to be increased, so that the outlet flow of the liquid storage tank 7 is increased, the evaporation pressure of the evaporator and the condensation pressure of the condenser are further increased, the mass flow of the refrigerant in the refrigerating system is increased, and then the step 4 is executed.
In some embodiments, in the process of the cooling operation of the base station air conditioner in step S130, the specific process of controlling the rotation speed of the outdoor fan of the base station air conditioner according to the current inner pipe temperature of the base station air conditioner and/or the current discharge pressure of the base station air conditioner is described in the following exemplary description.
The following is a flowchart of an embodiment of the method of the present invention for controlling the rotational speed of the outdoor fan according to the current inner pipe temperature and/or the current exhaust pressure in conjunction with fig. 3, further describes a specific process for controlling the rotational speed of the outdoor fan according to the current inner pipe temperature and/or the current exhaust pressure in step S130, which includes: step S310 to step S330.
Step S310, in the process of cooling operation of the base station air conditioner, after controlling the on/off of the switching device and controlling the opening of the throttling device, determining whether the current inner tube temperature of the base station air conditioner is less than a preset second inner tube temperature threshold. Wherein the preset second inner tube temperature threshold, such as temperature T Refrigerating low-load inner tube temperature threshold 2 。
Step S320, if it is determined that the current inner tube temperature of the base station air conditioner is less than the preset second inner tube temperature threshold, controlling the rotation speed of the outdoor fan to be reduced, and controlling the outdoor fan to operate according to the rotation speed after the reduction.
Step S330, continuously controlling the rotating speed of an outdoor fan of the base station air conditioner according to the current inner pipe temperature of the base station air conditioner; and/or continuously controlling the rotating speed of the outdoor fan of the base station air conditioner according to the current exhaust pressure of the base station air conditioner.
Specifically, as shown in fig. 8, the control method of the base station air conditioner with the heat storage function further includes: step 4, if the functional mode of the exhaust bypass control in the steps 1 to 3 still does not reach the ideal effect, the control of the rotation speed of the outdoor fan under the condition of low temperature prevention is performed, namely: judging whether the tube temperature T of the evaporator is satisfied Inner pipe < temperature T Refrigerating low-load inner tube temperature threshold 2 : if yes, executing step 5, otherwise, continuing to wait in step 4.
Step 5, if the tube temperature T of the evaporator is detected Inner pipe Below T Refrigerating low-load inner tube temperature threshold 2 When the temperature is lower than 10 ℃, the rotating speed of the outdoor fan 5 is reduced, and then the step 6 and/or the step 7 are/is executed. Wherein, the rotation speed of the outdoor fan 5 is maintained after being reduced to a certain rotation speed until the control of the rotation speed of the outdoor fan is exited.
In some embodiments, the specific process of continuously controlling the rotation speed of the outdoor fan of the base station air conditioner according to the current inner pipe temperature of the base station air conditioner in step S330 is described in the following exemplary description.
The following is a flowchart of an embodiment of the method of the present invention for continuously controlling the rotational speed of the outdoor fan according to the current inner tube temperature in conjunction with fig. 4, further describing the specific process of continuously controlling the rotational speed of the outdoor fan according to the current inner tube temperature in step S330, which includes: step S410 to step S430.
Step S410, determining whether the current inner tube temperature of the base station air conditioner is greater than or equal to a preset inner tube temperature target value.
Step S420, if it is determined that the current inner tube temperature of the base station air conditioner is greater than or equal to the preset inner tube temperature target value, stopping continuously controlling the rotation speed of the outdoor fan of the base station air conditioner, controlling the rotation speed of the outdoor fan to be recovered to the rotation speed before entering the control of the rotation speed of the outdoor fan, and returning to control the opening and closing of the switching device and controlling the opening of the throttling device according to the current inner tube temperature of the base station air conditioner in the process of continuously cooling the base station air conditioner; or in the process of the base station air conditioner refrigerating operation, controlling the opening and closing of the switching device and controlling the opening of the throttling device according to the current inner pipe temperature of the base station air conditioner; and controlling the rotating speed of an outdoor fan of the base station air conditioner according to the current inner pipe temperature of the base station air conditioner and/or the current exhaust pressure of the base station air conditioner.
Step S430, if the current inner tube temperature of the base station air conditioner is determined to be smaller than the preset inner tube temperature target value, returning to continuously control the rotation speed of the outdoor fan to be reduced, controlling the outdoor fan to operate according to the rotation speed after being reduced, and continuously controlling the rotation speed of the outdoor fan of the base station air conditioner according to the current inner tube temperature of the base station air conditioner; and/or continuously controlling the rotating speed of the outdoor fan of the base station air conditioner according to the current exhaust pressure of the base station air conditioner.
Specifically, as shown in fig. 8, the control method of the base station air conditioner with the heat storage function further includes: step 6, judging whether the tube temperature T of the evaporator is met Inner pipe Temperature T or more Target value of temperature in refrigerating inner tube : if yes, exiting the current exhaust bypass control and the rotation speed control of the outdoor fan under the condition of low temperature prevention, and returning to the step 1 to circularly control; otherwise, returning to the step 5, the rotation speed of the outdoor fan 5 is further reduced. Wherein the temperature T Target value of temperature in refrigerating inner tube Depending on different models and actual conditions of users, the temperature is generally 1-3 ℃ higher than the evaporation temperature during normal operation.
In some embodiments, the specific process of continuously controlling the rotation speed of the outdoor fan of the base station air conditioner according to the current discharge pressure of the base station air conditioner in step S330 is described in the following exemplary description.
The following is a flowchart of an embodiment of the method of the present invention for continuously controlling the rotational speed of the outdoor fan according to the current discharge pressure in conjunction with fig. 5, further describing the specific process of continuously controlling the rotational speed of the outdoor fan according to the current discharge pressure in step S330, which includes: step S510 to step S530.
Step S510, determining whether the current discharge pressure of the base station air conditioner is greater than or equal to a preset discharge pressure value.
Step S520, if it is determined that the current exhaust pressure of the base station air conditioner is greater than or equal to the preset exhaust pressure value, stopping continuously controlling the rotation speed of the outdoor fan of the base station air conditioner, controlling the outdoor fan to operate at the current rotation speed, and returning to control the opening and closing of the switching device and controlling the opening of the throttling device according to the current inner pipe temperature of the base station air conditioner in the process of continuously cooling and operating the base station air conditioner; or in the process of the base station air conditioner refrigerating operation, controlling the opening and closing of the switching device and controlling the opening of the throttling device according to the current inner pipe temperature of the base station air conditioner; and controlling the rotating speed of an outdoor fan of the base station air conditioner according to the current inner pipe temperature of the base station air conditioner and/or the current exhaust pressure of the base station air conditioner.
Step S530, if the current exhaust pressure of the base station air conditioner is determined to be smaller than the preset exhaust pressure value, returning to continuously control the rotation speed of the outdoor fan to be reduced, controlling the outdoor fan to operate according to the rotation speed after being reduced, and continuously controlling the rotation speed of the outdoor fan of the base station air conditioner according to the current inner pipe temperature of the base station air conditioner; and/or continuously controlling the rotating speed of the outdoor fan of the base station air conditioner according to the current exhaust pressure of the base station air conditioner.
Specifically, as shown in fig. 8, the control method of the base station air conditioner with the heat storage function further includes: step 7, judging whether the discharge pressure P of the compressor 1 is satisfied Exhaust gas Not less than the pressure P Target value of refrigeration discharge pressure : if yes, exiting the current exhaust bypass control and the rotation speed control of the outdoor fan under the condition of low temperature prevention, and returning to the step 1 to circularly control; otherwise, go back toStep 5 further reduces the rotational speed of the outdoor fan 5.
By adopting the technical scheme of the embodiment, a heat storage and liquid storage device is arranged between an outdoor side heat exchanger and a throttling device aiming at a base station air conditioner; a bypass branch is arranged between an exhaust port of the compressor and the space above the heat storage and liquid storage device, and a switch device (such as an electronic valve) is arranged on the bypass branch; under the condition of the base station air conditioner refrigeration operation, controlling the opening and closing of the switching device and the opening of the throttling device according to the pipe temperature of the indoor side heat exchanger, so as to realize the exhaust bypass control of the compressor; according to the pipe temperature of the indoor side heat exchanger and/or the exhaust pressure of the compressor, controlling the rotating speed of the outdoor fan to control the rotating speed of the low-temperature-resistant outdoor fan; therefore, the base station air conditioner has the functions of heat storage and flow control, so that the pressure and temperature fluctuation of the refrigerating system of the base station air conditioner are avoided to be large under the condition of large day and night temperature difference, and the operation stability of the base station air conditioner is improved.
According to an embodiment of the present invention, there is also provided a control apparatus of a base station air conditioner corresponding to the control method of the base station air conditioner. Referring to fig. 6, a schematic diagram of an embodiment of the apparatus of the present invention is shown. The base station air conditioner is provided with a compressor, an outdoor side heat exchanger, a throttling device and an indoor side heat exchanger, such as a compressor 1, an outdoor heat exchanger 4, a throttling valve 8 and an indoor heat exchanger 9; the refrigerant discharged from the exhaust port of the compressor returns to the air suction port of the compressor after passing through the outdoor side heat exchanger, the throttling device and the indoor side heat exchanger; a heat storage and liquid storage device (such as a liquid storage tank 7) is arranged between the outdoor side heat exchanger and the throttling device; the heat storage and liquid storage device is provided with a first inlet, a second inlet and a first outlet; the outdoor side heat exchanger is communicated with a first inlet of the heat storage and liquid storage device, and a first outlet of the heat storage and liquid storage device is communicated with the throttling device; a bypass pipeline is arranged between the exhaust port of the compressor and the second inlet of the heat storage and liquid storage device; a switching device (e.g. an electronic valve 6) is arranged in the bypass line. Specifically, fig. 7 is a schematic structural diagram of an embodiment of a base station air conditioner with heat storage function. Referring to the example shown in fig. 7, a cellular air conditioner (i.e., a base station air conditioner) of a communication base station should be provided with at least: a compressor (which may be a fixed frequency compressor or a variable frequency compressor, such as the compressor 1 shown in fig. 7), an outdoor side heat exchanger and fan (such as the outdoor heat exchanger 4 and the outdoor fan 5 shown in fig. 7), a throttle device (such as the throttle valve 8 shown in fig. 7, which may be an electronic expansion valve), and an indoor side heat exchanger and fan (such as the indoor heat exchanger 9 and the indoor fan 10 shown in fig. 7). Of course, the present invention may further include: a four-way valve (four-way valve 3 shown in fig. 7), and a gas-liquid separator (gas-liquid separator 2 shown in fig. 7). In the solution of the present invention, a liquid storage tank (liquid storage tank 7 shown in fig. 7) with a heat insulation function is additionally connected in series between the outdoor heat exchanger (outdoor heat exchanger 4 shown in fig. 7) and the throttling device (throttle valve 8 shown in fig. 7). The inner layer and the outer layer of the liquid storage tank 7 are made of steel plates, and the core layer is made of heat insulation materials with high heat resistance. As shown in fig. 7, the base station air conditioner with heat storage function includes: compressor 1, gas-liquid separator 2, cross valve 3, outdoor heat exchanger 4, outdoor fan 5, electronic valve 6, liquid storage tank 7, choke valve 8, indoor heat exchanger 9 and indoor fan 10. Wherein, the exhaust port of the compressor 1 is communicated with the second valve port of the four-way valve 3; the first valve port of the four-way valve 3 is communicated to the third valve port of the four-way valve 3 after passing through the outdoor heat exchanger 4, the liquid storage tank 7, the throttle valve 8 and the indoor heat exchanger 9; the fourth port of the four-way valve 3 passes through the gas-liquid separator 2 and returns to the suction port of the compressor 1. The discharge port of the compressor 1 is also connected to the head space of the liquid storage tank 7 after passing through the electronic valve 6. The outdoor fan 5 is disposed at the outdoor heat exchanger 4, and the indoor fan 10 is disposed at the indoor heat exchanger 9.
In the refrigeration mode, the high-temperature and high-pressure gaseous refrigerant at the exhaust outlet of the compressor 1 enters the outdoor condenser (namely the outdoor heat exchanger 4) to perform condensation heat release, is converted into liquid refrigerant, then enters the throttle valve 8 to throttle, is converted into low-temperature and low-pressure refrigerant, then enters the indoor evaporator (namely the indoor heat exchanger 9) to perform evaporation heat absorption, and finally returns to the air suction port of the compressor 1 to complete compression, thereby forming a cycle.
When the day-night temperature difference is large, the daytime temperature is high, the temperature of the condensation side (namely the outdoor heat exchanger 4) rises, the high-temperature refrigerant enters the liquid storage tank 7 from the condenser (namely the outdoor heat exchanger 4) at the moment, heat is stored in the liquid storage tank 7, and the supercooling degree of the refrigerant is basically unchanged; the temperature at night drops, the refrigerant at low temperature at the condensation side (i.e. the outdoor heat exchanger 4) is heated by the high-temperature refrigerant stored in the daytime, so that the temperature is recovered to a normal level, and the cycle is repeated so that the excessive heat in the daytime is released at night, and the evaporation pressure and the temperature of the indoor side evaporator (i.e. the indoor heat exchanger 9) are kept at a stable level.
Referring to the example shown in fig. 7, the above-described cooling mode is difficult to be effective when the heat stored during the day is insufficient. When the suction pressure and the discharge pressure of the compressor 1 decrease and the evaporation temperature of the indoor side evaporator (i.e., the indoor heat exchanger 9) is low, the base station air conditioner is caused to enter the exhaust bypass control. A branch is designed to connect the exhaust port of the compressor 1 with the space above the liquid storage tank 7, and is provided with an electronic valve 6 for control. Further, if the above-mentioned functional mode still does not reach the ideal effect, the rotational speed control of the outdoor fan is performed under the condition of low temperature prevention.
In an aspect of the present invention, as shown in fig. 6, the control device of a base station air conditioner includes: an acquisition unit 102 and a control unit 104.
Wherein the obtaining unit 102 is configured to obtain the tube temperature of the indoor side heat exchanger, which is recorded as the current inner tube temperature of the base station air conditioner (such as the tube temperature T of the evaporator, for example) when the base station air conditioner starts and operates in the cooling mode Inner pipe ) The method comprises the steps of carrying out a first treatment on the surface of the And the pressure of the exhaust port of the compressor is obtained and recorded as the current exhaust pressure of the base station air conditioner (such as the exhaust pressure P of the compressor 1 Exhaust gas ). The specific function and process of the acquisition unit 102 refer to step S110.
The control unit 104 is configured to control the opening and closing of the switching device and control the opening of the throttling device according to the current inner pipe temperature of the base station air conditioner in the process of the base station air conditioner refrigerating operation. The specific function and process of the control unit 104 refer to step S120. Or,
the control unit 104 is further configured to control the opening and closing of the switching device and control the opening of the throttling device according to the current inner pipe temperature of the base station air conditioner in the process of the base station air conditioner refrigerating operation; and controlling the rotating speed of an outdoor fan of the base station air conditioner according to the current inner pipe temperature of the base station air conditioner and/or the current exhaust pressure of the base station air conditioner. The specific function and processing of the control unit 104 is also referred to in step S130.
According to the control scheme of the base station air conditioner with the heat storage function, a liquid storage tank with a heat insulation function is additionally connected in series between an outdoor side heat exchanger and a throttling device; a branch is arranged to connect the exhaust port of the compressor and the space above the liquid storage tank, and an electronic valve is arranged to control the on-off of the branch; according to the tube temperature of the evaporator, the electronic valve is controlled to open and close, the opening of the throttle valve is controlled, the exhaust bypass control of the compressor and the rotation speed control of the outdoor fan under the condition of low temperature prevention are realized, the problems of pressure and temperature fluctuation of a refrigerating system of the base station air conditioner caused by large day-night temperature difference are solved, the problem of flow reduction caused by pressure reduction during winter operation of the base station air conditioner is also solved, the base station air conditioner has the functions of heat storage and flow control, the pressure and temperature fluctuation of the refrigerating system of the base station air conditioner are avoided to be large under the condition of large day-night temperature difference, and the operation stability of the base station air conditioner is improved.
The high specific heat capacity is one of the main characteristics of the refrigerant, so that the refrigerant is directly used as an energy storage working medium in the refrigeration system, the structure of the base station air conditioner is simple, and the cost for searching additional energy storage materials is saved. Therefore, a liquid storage tank with a heat insulation function is connected in series between the outer condenser and the throttling device. After the temperature of the refrigerant at the outlet of the condenser is neutralized in the liquid storage tank, the refrigerant enters the throttling device, so that the change of the outside environment temperature can be delayed to act on the refrigerant before the throttling device. Thus, the heat generated during the daytime does not immediately cause the temperature and pressure of the refrigerant to change, but is stored in the liquid storage tank; when the temperature at night is reduced, the heat stored in the liquid storage tank is released to the refrigerating system again; similarly, the cold energy at night can be stored in daytime, so that the effects of peak clipping and valley filling are achieved. Thus, the larger the reservoir volume should be, the higher the heat it can store, and the better the utility.
In addition, because the heat generated during winter operation is insufficient in daytime, the condensing pressure and the evaporating pressure of the control system of the base station air conditioner with the heat storage function are lower, so that the flow of the refrigerant is reduced and the refrigerating capacity is reduced. Therefore, in the scheme of the invention, a branch is designed to be connected with the upper space of the exhaust port of the compressor and the liquid storage tank, and is provided with an electronic valve for control. When the tube temperature of the evaporator is detected to be too low, the electronic valve is controlled to be opened, and the gaseous high-temperature high-pressure refrigerant at the partial exhaust outlet of the compressor directly enters the liquid storage tank from the upper part; at the same time, the throttle opening is increased, so that the outlet flow of the throttle valve is increased. The purpose of this design is: 1. the high-temperature refrigerant at the exhaust outlet of the compressor is used for providing heat for the liquid storage tank, so that the temperature of the refrigerant before throttling of the throttling device is improved; 2. the refrigerant at the inlet of the liquid storage tank is changed from pure liquid phase to gas-liquid phase, and the outlet is still in liquid state, so that the mass of the refrigerant in the liquid storage tank is reduced, the mass flow entering the refrigeration system is increased, and the problem of flow reduction caused by pressure reduction is solved.
In some arrangements, the refrigerant is used directly as a coolant to provide a natural cooling effect by shorting the compressor, i.e., equivalent to disabling the refrigeration system. Such a design gives up a refrigeration system and cannot guarantee stability for the refrigeration effect. For example, the problem of air outlet temperature is solved, and the air outlet temperature is changed along with the change of outdoor environment temperature by adopting the scheme, and is not in line with the requirement of maintaining constant working temperature of communication base station equipment. The scheme of the invention can ensure the stability of the refrigerating system and prevent the refrigerating system from being influenced by environmental factors.
In other schemes, the liquid storage tank is used as a container for accumulating liquid refrigeration working media, so that the effects of generating pressure difference and pushing the system mode to switch are realized, and the capacity is limited by the design pressure difference. According to the scheme, the liquid storage tank with the heat insulation function is connected in series between the outer condenser and the throttling device, so that heat generated in daytime can not immediately cause temperature and pressure change of the refrigerant, but is stored in the liquid storage tank, and when the temperature is reduced at night, the stored heat is released into the refrigerating system again, so that the effects of peak clipping and valley filling are achieved. The design purpose of the liquid storage tank in the scheme of the invention is to absorb heat of the external environment higher or lower than the average value, and the liquid storage tank has a buffering effect, so that a heat insulation material is needed, and the capacity is as large as possible. Likewise, in order to ensure the stability of the operation of the refrigeration system, the heat exchange effect of the outdoor side needs to be reduced in the low-temperature environment. The exhaust bypass can be simply understood that a part of the condenser is short-circuited, and the part of the refrigerant directly enters the throttling device without passing through the condenser, and in addition, the compression resistance problem of the refrigerating system can be effectively improved due to the design of the high-capacity liquid storage tank.
In some embodiments, the control unit 104 controls the opening and closing of the switching device and controls the opening of the throttling device according to the current inner tube temperature of the base station air conditioner during the cooling operation of the base station air conditioner, including:
The control unit 104 is specifically further configured to determine whether the current internal pipe temperature of the base station air conditioner is less than a preset first internal pipe temperature threshold. The specific function and process of the control unit 104 also refer to step S210. Wherein the preset first inner tube temperature threshold, such as temperature T Refrigerating low-load inner tube temperature threshold 1 。
The control unit 104 is specifically further configured to control the opening of the switching device and control the opening of the throttling device to increase if it is determined that the current internal pipe temperature of the base station air conditioner is less than a preset first internal pipe temperature threshold. The specific function and process of the control unit 104 is also referred to as step S220.
Specifically, fig. 8 is a schematic flow chart of an embodiment of a control device of a base station air conditioner with a heat storage function. As shown in fig. 8, the control device of the base station air conditioner having a heat storage function includes:
step 1, after a base station air conditioner is started and a refrigeration mode is operated, detecting the tube temperature T of an evaporator Inner pipe And checkMeasuring discharge pressure P of compressor 1 Exhaust gas Step 2 is then performed.
Step 2, judging whether the tube temperature T of the evaporator is met Inner pipe < temperature T Refrigerating low-load inner tube temperature threshold 1 : if yes, executing the step 3, otherwise, continuing to wait in the step 2.
Step 3, when the tube temperature T of the evaporator is detected Inner pipe Below temperature T Refrigerating low-load inner tube temperature threshold 1 When the electronic valve 6 is controlled to be opened, the gaseous high-temperature high-pressure refrigerant at a part of the exhaust outlet of the compressor 1 directly enters the liquid storage tank 7 from the upper part of the liquid storage tank 7; at the same time, the opening of the throttle valve 8 is controlled to be increased, so that the outlet flow of the liquid storage tank 7 is increased, the evaporation pressure of the evaporator and the condensation pressure of the condenser are further increased, the mass flow of the refrigerant in the refrigerating system is increased, and then the step 4 is executed.
In some embodiments, the control unit 104 controls the rotation speed of the outdoor fan of the base station air conditioner according to the current inner pipe temperature of the base station air conditioner and/or the current discharge pressure of the base station air conditioner during the cooling operation of the base station air conditioner, and includes:
the control unit 104 is specifically further configured to determine, during the cooling operation of the base station air conditioner, whether the current inner tube temperature of the base station air conditioner is less than a preset second inner tube temperature threshold after controlling the opening and closing of the switching device and controlling the opening of the throttling device. The specific function and process of the control unit 104 also refer to step S310. Wherein the preset second inner tube temperature threshold, such as temperature T Refrigerating low-load inner tube temperature threshold 2 。
The control unit 104 is specifically further configured to control the rotation speed of the outdoor fan to be reduced if it is determined that the current inner tube temperature of the base station air conditioner is less than the preset second inner tube temperature threshold, and control the outdoor fan to operate at the rotation speed after the reduction. The specific function and process of the control unit 104 also refer to step S320.
The control unit 104 is specifically further configured to continuously control the rotation speed of the outdoor fan of the base station air conditioner according to the current inner tube temperature of the base station air conditioner; and/or continuously controlling the rotating speed of the outdoor fan of the base station air conditioner according to the current exhaust pressure of the base station air conditioner. The specific function and process of the control unit 104 also refer to step S330.
Specifically, as shown in fig. 8, the control device of the base station air conditioner with the heat storage function further includes: step 4, if the functional mode of the exhaust bypass control in the steps 1 to 3 still does not reach the ideal effect, the control of the rotation speed of the outdoor fan under the condition of low temperature prevention is performed, namely: judging whether the tube temperature T of the evaporator is satisfied Inner pipe < temperature T Refrigerating low-load inner tube temperature threshold 2 : if yes, executing step 5, otherwise, continuing to wait in step 4.
Step 5, if the tube temperature T of the evaporator is detected Inner pipe Below T Refrigerating low-load inner tube temperature threshold 2 And when the rotation speed of the outdoor fan 5 is reduced, and then step 6 and/or step 7 are/is executed.
In some embodiments, the control unit 104 continuously controls the rotation speed of the outdoor fan of the base station air conditioner according to the current inner tube temperature of the base station air conditioner, including:
the control unit 104 is specifically further configured to determine whether the current internal pipe temperature of the base station air conditioner is greater than or equal to a preset internal pipe temperature target value. The specific function and process of the control unit 104 also refer to step S410.
The control unit 104 is specifically further configured to stop continuously controlling the rotation speed of the outdoor fan of the base station air conditioner if the current inner tube temperature of the base station air conditioner is determined to be greater than or equal to the preset inner tube temperature target value, and control the outdoor fan to resume the rotation speed operation before the control of entering the rotation speed of the outdoor fan, and then return to continuously control the opening and closing of the switching device and control the opening of the throttling device according to the current inner tube temperature of the base station air conditioner in the process of the cooling operation of the base station air conditioner; or in the process of the base station air conditioner refrigerating operation, controlling the opening and closing of the switching device and controlling the opening of the throttling device according to the current inner pipe temperature of the base station air conditioner; and controlling the rotating speed of an outdoor fan of the base station air conditioner according to the current inner pipe temperature of the base station air conditioner and/or the current exhaust pressure of the base station air conditioner. The specific function and process of the control unit 104 also refer to step S420.
The control unit 104 is specifically further configured to return to continuously control the rotation speed of the outdoor fan to decrease if it is determined that the current inner tube temperature of the base station air conditioner is less than the preset inner tube temperature target value, and to control the outdoor fan to operate at the rotation speed after decreasing, and then continuously control the rotation speed of the outdoor fan of the base station air conditioner according to the current inner tube temperature of the base station air conditioner; and/or continuously controlling the rotating speed of the outdoor fan of the base station air conditioner according to the current exhaust pressure of the base station air conditioner. The specific function and process of the control unit 104 also refer to step S430.
Specifically, as shown in fig. 8, the control device of the base station air conditioner with the heat storage function further includes: step 6, judging whether the tube temperature T of the evaporator is met Inner pipe Temperature T or more Target value of temperature in refrigerating inner tube : if yes, exiting the current exhaust bypass control and the rotation speed control of the outdoor fan under the condition of low temperature prevention, and returning to the step 1 to circularly control; otherwise, returning to the step 5, the rotation speed of the outdoor fan 5 is further reduced.
In some embodiments, the control unit 104 continuously controls the rotation speed of the outdoor fan of the base station air conditioner according to the current discharge pressure of the base station air conditioner, including:
The control unit 104 is specifically further configured to determine whether the current discharge pressure of the base station air conditioner is greater than or equal to a preset discharge pressure value. The specific function and process of the control unit 104 also refer to step S510.
The control unit 104 is specifically further configured to stop continuously controlling the rotation speed of the outdoor fan of the base station air conditioner and control the outdoor fan to operate at the current rotation speed if the current exhaust pressure of the base station air conditioner is determined to be greater than or equal to the preset exhaust pressure value, and then return to control the opening and closing of the switching device and control the opening of the throttling device according to the current inner pipe temperature of the base station air conditioner in the process of continuously cooling and operating the base station air conditioner; or in the process of the base station air conditioner refrigerating operation, controlling the opening and closing of the switching device and controlling the opening of the throttling device according to the current inner pipe temperature of the base station air conditioner; and controlling the rotating speed of an outdoor fan of the base station air conditioner according to the current inner pipe temperature of the base station air conditioner and/or the current exhaust pressure of the base station air conditioner. The specific function and process of the control unit 104 also refer to step S520.
The control unit 104 is specifically further configured to return to continuously control the rotation speed of the outdoor fan to decrease if it is determined that the current exhaust pressure of the base station air conditioner is smaller than the preset exhaust pressure value, and to control the outdoor fan to operate at the decreased rotation speed, and then continuously control the rotation speed of the outdoor fan of the base station air conditioner according to the current inner pipe temperature of the base station air conditioner; and/or continuously controlling the rotating speed of the outdoor fan of the base station air conditioner according to the current exhaust pressure of the base station air conditioner. The specific function and processing of the control unit 104 is also referred to in step S530.
Specifically, as shown in fig. 8, the control device of the base station air conditioner with the heat storage function further includes: step 7, judging whether the discharge pressure P of the compressor 1 is satisfied Exhaust gas Not less than the pressure P Target value of refrigeration discharge pressure : if yes, exiting the current exhaust bypass control and the rotation speed control of the outdoor fan under the condition of low temperature prevention, and returning to the step 1 to circularly control; otherwise, returning to the step 5, the rotation speed of the outdoor fan 5 is further reduced.
Since the processes and functions implemented by the apparatus of the present embodiment substantially correspond to the embodiments, principles and examples of the foregoing methods, the descriptions of the embodiments are not exhaustive, and reference may be made to the descriptions of the foregoing embodiments and their descriptions are omitted herein.
By adopting the technical scheme of the invention, a heat storage and liquid storage device is arranged between the outdoor side heat exchanger and the throttling device aiming at the base station air conditioner; a bypass branch is arranged between an exhaust port of the compressor and the space above the heat storage and liquid storage device, and a switch device (such as an electronic valve) is arranged on the bypass branch; under the condition of the base station air conditioner refrigeration operation, controlling the opening and closing of the switching device and the opening of the throttling device according to the pipe temperature of the indoor side heat exchanger, so as to realize the exhaust bypass control of the compressor; according to the pipe temperature of the indoor side heat exchanger and/or the exhaust pressure of the compressor, the rotating speed of the outdoor fan is controlled to control the rotating speed of the low-temperature-resistant outdoor fan, so that the problems of pressure and temperature fluctuation of a refrigerating system of the base station air conditioner caused by large day-night temperature difference are solved, the problem of flow reduction caused by pressure reduction when the base station air conditioner operates in winter is also solved, and the refrigerating performance of the base station air conditioner is improved.
According to an embodiment of the present invention, there is also provided a base station air conditioner corresponding to the control device of the base station air conditioner. The base station air conditioner may include: the control device of the base station air conditioner.
Since the processing and the functions implemented by the base station air conditioner of the present embodiment basically correspond to the embodiments, principles and examples of the foregoing apparatus, the description of the present embodiment is not exhaustive, and reference may be made to the related descriptions in the foregoing embodiments, which are not repeated herein.
By adopting the technical scheme of the invention, a heat storage and liquid storage device is arranged between the outdoor side heat exchanger and the throttling device aiming at the base station air conditioner; a bypass branch is arranged between an exhaust port of the compressor and the space above the heat storage and liquid storage device, and a switch device (such as an electronic valve) is arranged on the bypass branch; under the condition of the base station air conditioner refrigeration operation, controlling the opening and closing of the switching device and the opening of the throttling device according to the pipe temperature of the indoor side heat exchanger, so as to realize the exhaust bypass control of the compressor; according to the tube temperature of the indoor side heat exchanger and/or the exhaust pressure of the compressor, the rotating speed of the outdoor fan is controlled to control the rotating speed of the low-temperature-resistant outdoor fan, and the running stability of the refrigerating system in a low-temperature environment is ensured.
According to an embodiment of the present invention, there is also provided a storage medium corresponding to a control method of a base station air conditioner, the storage medium including a stored program, wherein an apparatus in which the storage medium is controlled to execute the above-described control method of the base station air conditioner when the program runs.
Since the processes and functions implemented by the storage medium of the present embodiment substantially correspond to the embodiments, principles and examples of the foregoing methods, the descriptions of the present embodiment are not exhaustive, and reference may be made to the related descriptions of the foregoing embodiments, which are not repeated herein.
By adopting the technical scheme of the invention, a heat storage and liquid storage device is arranged between the outdoor side heat exchanger and the throttling device aiming at the base station air conditioner; a bypass branch is arranged between an exhaust port of the compressor and the space above the heat storage and liquid storage device, and a switch device (such as an electronic valve) is arranged on the bypass branch; under the condition of the base station air conditioner refrigeration operation, controlling the opening and closing of the switching device and the opening of the throttling device according to the pipe temperature of the indoor side heat exchanger, so as to realize the exhaust bypass control of the compressor; according to the tube temperature of the indoor side heat exchanger and/or the exhaust pressure of the compressor, the rotating speed of the outdoor fan is controlled to control the rotating speed of the low-temperature-resistant outdoor fan, so that the stability of the refrigerating system can be ensured, and the refrigerating system is not influenced by environmental factors.
In summary, it is readily understood by those skilled in the art that the above-described advantageous ways can be freely combined and superimposed without conflict.
The above description is only an example of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (10)
1. The control method of the base station air conditioner is characterized by comprising a compressor, an outdoor side heat exchanger, a throttling device and an indoor side heat exchanger; the refrigerant discharged from the exhaust port of the compressor returns to the air suction port of the compressor after passing through the outdoor side heat exchanger, the throttling device and the indoor side heat exchanger; a heat storage and liquid storage device is arranged between the outdoor side heat exchanger and the throttling device; the heat storage and liquid storage device is provided with a first inlet, a second inlet and a first outlet; the outdoor side heat exchanger is communicated with a first inlet of the heat storage and liquid storage device, and a first outlet of the heat storage and liquid storage device is communicated with the throttling device; a bypass pipeline is arranged between the exhaust port of the compressor and the second inlet of the heat storage and liquid storage device; a switch device is arranged on the bypass pipe;
the control method of the base station air conditioner comprises the following steps:
under the condition that the base station air conditioner is started and runs in a refrigerating mode, acquiring the tube temperature of the indoor side heat exchanger, and recording the tube temperature as the current inner tube temperature of the base station air conditioner; the pressure of the exhaust port of the compressor is obtained and is recorded as the current exhaust pressure of the base station air conditioner;
Controlling the opening and closing of the switching device and controlling the opening of the throttling device according to the current inner tube temperature of the base station air conditioner; or,
controlling the opening and closing of the switching device and controlling the opening of the throttling device according to the current inner tube temperature of the base station air conditioner; and controlling the rotating speed of an outdoor fan of the base station air conditioner according to the current inner pipe temperature of the base station air conditioner and/or the current exhaust pressure of the base station air conditioner.
2. The control method of a base station air conditioner according to claim 1, wherein controlling the opening and closing of the switching device and controlling the opening of the throttle device according to the current inner tube temperature of the base station air conditioner comprises:
determining whether the current inner tube temperature of the base station air conditioner is smaller than a preset first inner tube temperature threshold value;
and if the current inner tube temperature of the base station air conditioner is smaller than the preset first inner tube temperature threshold value, controlling the switching device to be turned on, and controlling the opening of the throttling device to be increased.
3. The control method of a base station air conditioner according to claim 1 or 2, wherein controlling the rotation speed of an outdoor fan of the base station air conditioner according to the current inner pipe temperature of the base station air conditioner and/or the current discharge pressure of the base station air conditioner, comprises:
After controlling the opening and closing of the switching device and controlling the opening of the throttling device, determining whether the current inner tube temperature of the base station air conditioner is smaller than a preset second inner tube temperature threshold value;
if the current inner tube temperature of the base station air conditioner is determined to be smaller than a preset second inner tube temperature threshold value, controlling the rotation speed of the outdoor fan to be reduced, and controlling the outdoor fan to operate according to the rotation speed after the reduction;
continuously controlling the rotating speed of an outdoor fan of the base station air conditioner according to the current inner pipe temperature of the base station air conditioner; and/or continuously controlling the rotating speed of the outdoor fan of the base station air conditioner according to the current exhaust pressure of the base station air conditioner.
4. The control method of a base station air conditioner according to claim 3, wherein,
continuously controlling the rotating speed of an outdoor fan of the base station air conditioner according to the current inner tube temperature of the base station air conditioner, wherein the rotating speed comprises the following steps:
determining whether the current inner tube temperature of the base station air conditioner is greater than or equal to a preset inner tube temperature target value;
if the current inner tube temperature of the base station air conditioner is determined to be greater than or equal to the preset inner tube temperature target value, stopping continuously controlling the rotating speed of the outdoor fan of the base station air conditioner, and controlling the rotating speed of the outdoor fan to be restored to the rotating speed operation before the control of the rotating speed of the outdoor fan;
If the current inner tube temperature of the base station air conditioner is determined to be smaller than the preset inner tube temperature target value, returning to continuously control the rotation speed of the outdoor fan to be reduced, and controlling the outdoor fan to operate according to the rotation speed after the reduction;
and/or the number of the groups of groups,
continuously controlling the rotating speed of an outdoor fan of the base station air conditioner according to the current exhaust pressure of the base station air conditioner, wherein the method comprises the following steps:
determining whether the current exhaust pressure of the base station air conditioner is greater than or equal to a preset exhaust pressure value;
if the current exhaust pressure of the base station air conditioner is determined to be greater than or equal to a preset exhaust pressure value, stopping continuously controlling the rotating speed of an outdoor fan of the base station air conditioner, and controlling the outdoor fan to operate according to the current rotating speed;
and if the current exhaust pressure of the base station air conditioner is smaller than the preset exhaust pressure value, returning to continuously control the rotation speed of the outdoor fan to be reduced, and controlling the outdoor fan to operate according to the rotation speed after the reduction.
5. The control device of the base station air conditioner is characterized by comprising a compressor, an outdoor side heat exchanger, a throttling device and an indoor side heat exchanger; the refrigerant discharged from the exhaust port of the compressor returns to the air suction port of the compressor after passing through the outdoor side heat exchanger, the throttling device and the indoor side heat exchanger; a heat storage and liquid storage device is arranged between the outdoor side heat exchanger and the throttling device; the heat storage and liquid storage device is provided with a first inlet, a second inlet and a first outlet; the outdoor side heat exchanger is communicated with a first inlet of the heat storage and liquid storage device, and a first outlet of the heat storage and liquid storage device is communicated with the throttling device; a bypass pipeline is arranged between the exhaust port of the compressor and the second inlet of the heat storage and liquid storage device; a switch device is arranged on the bypass pipe; the control device of the base station air conditioner comprises:
An acquisition unit configured to acquire a tube temperature of the indoor side heat exchanger, as a current inner tube temperature of the base station air conditioner, in a case where the base station air conditioner is started and operates in a cooling mode; the pressure of the exhaust port of the compressor is obtained and is recorded as the current exhaust pressure of the base station air conditioner;
the control unit is configured to control the opening and closing of the switching device and the opening of the throttling device according to the current inner pipe temperature of the base station air conditioner; or,
the control unit is further configured to control the opening and closing of the switching device and the opening of the throttling device according to the current inner tube temperature of the base station air conditioner; and controlling the rotating speed of an outdoor fan of the base station air conditioner according to the current inner pipe temperature of the base station air conditioner and/or the current exhaust pressure of the base station air conditioner.
6. The control device of a base station air conditioner according to claim 5, wherein the control unit controls the opening and closing of the switching device and controls the opening of the throttle device according to the current inner tube temperature of the base station air conditioner, comprising:
determining whether the current inner tube temperature of the base station air conditioner is smaller than a preset first inner tube temperature threshold value;
And if the current inner tube temperature of the base station air conditioner is smaller than the preset first inner tube temperature threshold value, controlling the switching device to be turned on, and controlling the opening of the throttling device to be increased.
7. The control device of a base station air conditioner according to claim 5 or 6, wherein the control unit controls the rotation speed of an outdoor fan of the base station air conditioner according to the current inner pipe temperature of the base station air conditioner and/or the current discharge pressure of the base station air conditioner, comprising:
after controlling the opening and closing of the switching device and controlling the opening of the throttling device, determining whether the current inner tube temperature of the base station air conditioner is smaller than a preset second inner tube temperature threshold value;
if the current inner tube temperature of the base station air conditioner is determined to be smaller than a preset second inner tube temperature threshold value, controlling the rotation speed of the outdoor fan to be reduced, and controlling the outdoor fan to operate according to the rotation speed after the reduction;
continuously controlling the rotating speed of an outdoor fan of the base station air conditioner according to the current inner pipe temperature of the base station air conditioner; and/or continuously controlling the rotating speed of the outdoor fan of the base station air conditioner according to the current exhaust pressure of the base station air conditioner.
8. The control device of a base station air conditioner according to claim 7, wherein,
The control unit continuously controls the rotating speed of the outdoor fan of the base station air conditioner according to the current inner tube temperature of the base station air conditioner, and the control unit comprises:
determining whether the current inner tube temperature of the base station air conditioner is greater than or equal to a preset inner tube temperature target value;
if the current inner tube temperature of the base station air conditioner is determined to be greater than or equal to the preset inner tube temperature target value, stopping continuously controlling the rotating speed of the outdoor fan of the base station air conditioner, and controlling the rotating speed of the outdoor fan to be restored to the rotating speed operation before the control of the rotating speed of the outdoor fan;
if the current inner tube temperature of the base station air conditioner is determined to be smaller than the preset inner tube temperature target value, returning to continuously control the rotation speed of the outdoor fan to be reduced, and controlling the outdoor fan to operate according to the rotation speed after the reduction;
and/or the number of the groups of groups,
the control unit continuously controls the rotating speed of the outdoor fan of the base station air conditioner according to the current exhaust pressure of the base station air conditioner, and the control unit comprises:
determining whether the current exhaust pressure of the base station air conditioner is greater than or equal to a preset exhaust pressure value;
if the current exhaust pressure of the base station air conditioner is determined to be greater than or equal to a preset exhaust pressure value, stopping continuously controlling the rotating speed of an outdoor fan of the base station air conditioner, and controlling the outdoor fan to operate according to the current rotating speed;
And if the current exhaust pressure of the base station air conditioner is smaller than the preset exhaust pressure value, returning to continuously control the rotation speed of the outdoor fan to be reduced, and controlling the outdoor fan to operate according to the rotation speed after the reduction.
9. A base station air conditioner, comprising: the control device of a base station air conditioner according to any one of claims 5 to 8.
10. A storage medium comprising a stored program, wherein the program, when run, controls a device in which the storage medium is located to perform the control method of the base station air conditioner of any one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311541391.3A CN117255544B (en) | 2023-11-20 | 2023-11-20 | Control method and device of base station air conditioner, base station air conditioner and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311541391.3A CN117255544B (en) | 2023-11-20 | 2023-11-20 | Control method and device of base station air conditioner, base station air conditioner and storage medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117255544A true CN117255544A (en) | 2023-12-19 |
| CN117255544B CN117255544B (en) | 2024-02-09 |
Family
ID=89137300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311541391.3A Active CN117255544B (en) | 2023-11-20 | 2023-11-20 | Control method and device of base station air conditioner, base station air conditioner and storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117255544B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201903215U (en) * | 2010-12-28 | 2011-07-20 | 宁波惠康实业有限公司 | Air-conditioner system with entire heat recovery function |
| JP2014047955A (en) * | 2012-08-30 | 2014-03-17 | Toshiba Corp | Refrigeration cycle device |
| CN206572818U (en) * | 2017-03-03 | 2017-10-20 | 广东美的暖通设备有限公司 | Air conditioner |
| CN110173823A (en) * | 2019-05-31 | 2019-08-27 | 广东美的制冷设备有限公司 | Progress control method, control device, air conditioner and computer readable storage medium |
| CN111550940A (en) * | 2020-05-16 | 2020-08-18 | 王咏伦 | Screw refrigerating unit in low-temperature environment and starting method thereof |
| US20220316746A1 (en) * | 2021-03-31 | 2022-10-06 | Guangdong Giwee Technology Co. Ltd. | Heat recovery air conditioner hot water system and refrigerant flow control method thereof |
| CN115597196A (en) * | 2021-06-28 | 2023-01-13 | 美的集团股份有限公司（Cn） | Control method, air conditioner and computer readable storage medium |
| CN116358282A (en) * | 2023-02-01 | 2023-06-30 | 烟台大学 | Closed heat pump drying device and operation mode thereof |
| CN116892778A (en) * | 2023-06-20 | 2023-10-17 | 珠海格力电器股份有限公司 | Air conditioner control method and device, storage medium and air conditioner |
| CN116928859A (en) * | 2023-08-21 | 2023-10-24 | 珠海格力电器股份有限公司 | Air conditioner heat recovery system, air conditioner system with same and air conditioner control method |
-
2023
- 2023-11-20 CN CN202311541391.3A patent/CN117255544B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201903215U (en) * | 2010-12-28 | 2011-07-20 | 宁波惠康实业有限公司 | Air-conditioner system with entire heat recovery function |
| JP2014047955A (en) * | 2012-08-30 | 2014-03-17 | Toshiba Corp | Refrigeration cycle device |
| CN206572818U (en) * | 2017-03-03 | 2017-10-20 | 广东美的暖通设备有限公司 | Air conditioner |
| CN110173823A (en) * | 2019-05-31 | 2019-08-27 | 广东美的制冷设备有限公司 | Progress control method, control device, air conditioner and computer readable storage medium |
| CN111550940A (en) * | 2020-05-16 | 2020-08-18 | 王咏伦 | Screw refrigerating unit in low-temperature environment and starting method thereof |
| US20220316746A1 (en) * | 2021-03-31 | 2022-10-06 | Guangdong Giwee Technology Co. Ltd. | Heat recovery air conditioner hot water system and refrigerant flow control method thereof |
| CN115597196A (en) * | 2021-06-28 | 2023-01-13 | 美的集团股份有限公司（Cn） | Control method, air conditioner and computer readable storage medium |
| CN116358282A (en) * | 2023-02-01 | 2023-06-30 | 烟台大学 | Closed heat pump drying device and operation mode thereof |
| CN116892778A (en) * | 2023-06-20 | 2023-10-17 | 珠海格力电器股份有限公司 | Air conditioner control method and device, storage medium and air conditioner |
| CN116928859A (en) * | 2023-08-21 | 2023-10-24 | 珠海格力电器股份有限公司 | Air conditioner heat recovery system, air conditioner system with same and air conditioner control method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117255544B (en) | 2024-02-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5121922B2 (en) | Air conditioning and hot water supply complex system | |
| CN102840639A (en) | Air-conditioning system for canteen | |
| WO2010064923A1 (en) | Heat pump/air conditioning apparatus with sequential operation | |
| CN107178924A (en) | A kind of accumulation of heat is not shut down except defrosting system and air-conditioning | |
| CN203964436U (en) | Two-stage compression air conditioning system | |
| WO2019037722A1 (en) | Air conditioning system and control method therefor | |
| CN212538209U (en) | Heat pump system, heat pump air conditioner comprising same and heat pump water heater | |
| CN115031351A (en) | Air conditioner and defrosting control method thereof | |
| CN1287121C (en) | air conditioner throttling set able to carry out dynamic control of cool medlium filling amount | |
| CN103673116A (en) | Energy-storage type fluorine pump heat pipe system and control method thereof | |
| CN117255544B (en) | Control method and device of base station air conditioner, base station air conditioner and storage medium | |
| CN114076384A (en) | Control method and system of air conditioning equipment, air conditioning equipment and storage medium | |
| CN210179937U (en) | Energy tower solution regenerating unit based on vacuum freezing method | |
| CN109737632B (en) | Efficient energy-saving kitchen and bathroom integrated air conditioning unit and control method thereof | |
| CN109539620B (en) | Air conditioning system | |
| CN2535697Y (en) | Thermal storage heat pump type family-type central air conditioning macine | |
| CN113137710B (en) | Control method of evaporative condenser unit | |
| CN110243101A (en) | A kind of accumulating type high-efficiency air cooling heat pump unit | |
| CN117940706A (en) | Air source heat pump system | |
| CN2428737Y (en) | Small frequency-variable wind-cooling heat-pump water-cooling-heating machine group | |
| CN114234312A (en) | Energy storage method of compression-type and absorption-type integrated air conditioner and energy storage air conditioner | |
| CN108469134B (en) | Improved air-cooled condenser and control method thereof | |
| JP2000028185A (en) | Air conditioner | |
| CN112797570A (en) | Defrosting control method, defrosting device and multi-connected air conditioning system | |
| JP4046828B2 (en) | Air conditioner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |