CN112539532B - Fresh air conditioner and control method and equipment thereof - Google Patents
Fresh air conditioner and control method and equipment thereof Download PDFInfo
- Publication number
- CN112539532B CN112539532B CN202011438169.7A CN202011438169A CN112539532B CN 112539532 B CN112539532 B CN 112539532B CN 202011438169 A CN202011438169 A CN 202011438169A CN 112539532 B CN112539532 B CN 112539532B
- Authority
- CN
- China
- Prior art keywords
- fresh air
- temperature
- pipeline
- air conditioner
- heating
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 40
- 238000010438 heat treatment Methods 0.000 claims abstract description 115
- 238000005057 refrigeration Methods 0.000 claims abstract description 23
- 239000003507 refrigerant Substances 0.000 claims description 53
- 239000007788 liquid Substances 0.000 claims description 16
- 238000004590 computer program Methods 0.000 claims description 10
- 230000006870 function Effects 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 6
- 230000017525 heat dissipation Effects 0.000 description 19
- 238000010521 absorption reaction Methods 0.000 description 11
- 238000004891 communication Methods 0.000 description 7
- 230000001105 regulatory effect Effects 0.000 description 7
- 230000005855 radiation Effects 0.000 description 6
- 230000001276 controlling effect Effects 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 238000004378 air conditioning Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0035—Indoor units, e.g. fan coil units characterised by introduction of outside air to the room
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
- F24F11/67—Switching between heating and cooling modes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
- F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
- F24F7/065—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit fan combined with single duct; mounting arrangements of a fan in a duct
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H3/00—Air heaters
- F24H3/02—Air heaters with forced circulation
- F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
- F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
- F24H9/1818—Arrangement or mounting of electric heating means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Signal Processing (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides a fresh air conditioner and a control method and equipment thereof, wherein the fresh air conditioner comprises an indoor heat exchanger, a fresh air temperature adjusting pipeline, a four-way reversing valve, a compressor, an outdoor heat exchanger and a throttling device which are sequentially connected, and a heating device is arranged on the fresh air temperature adjusting pipeline; the bypass branch is connected in parallel with two ends of the fresh air temperature adjusting pipeline through a three-way reversing valve; the control method of the fresh air conditioner comprises the following steps: when the fresh air function is started, the operation mode of the fresh air conditioner is obtained; when the operation mode is a heating mode, acquiring a first pipeline temperature and a heating temperature threshold value between a fresh air temperature adjusting pipeline and a four-way reversing valve; and comparing the temperature of the first pipeline with the heating temperature threshold value to switch the three-way reversing valve and start and stop the heating device. This fresh air conditioner utilizes fresh air temperature adjusting pipeline and heating device, not only can improve the air-out effect of new trend, improves user's travelling comfort, can also improve heating and the refrigeration efficiency of air conditioner, reduces power consumption.
Description
Technical Field
The invention relates to the technical field of air-conditioning equipment, in particular to a fresh air conditioner and a control method and equipment thereof.
Background
The air conditioner is a household device commonly used in our daily life, and in order to maintain constant indoor temperature and save electric energy, people usually close doors and windows of a room at the same time, so that the air conditioner works in a closed environment. However, since ventilation cannot be performed in time in a sealed space state, it is difficult to satisfy sufficient supply of oxygen in a room. Particularly, as the air pollution is increased in recent years, especially in winter heating season, indoor air quality is worse and lower, and oxygen content is lower and lower, which affects body health. In order to improve indoor air, a fresh air conditioner has come into use, which introduces outdoor air into a room through a fresh air pipeline.
The existing fresh air conditioner introduces outdoor wind and heat into a room, and in summer, because the fresh air conditioner introduces outdoor hot air, a user feels cool and hot in front of the air conditioner, the comfort level is greatly reduced, the air conditioning efficiency is reduced, and the power consumption is increased; likewise, in winter, the comfort level is also reduced due to the introduced fresh air being cooler, so that the user has to disable the fresh air function.
Disclosure of Invention
The invention provides a fresh air conditioner and a control method and equipment thereof, which are used for solving the defects of increased power consumption, lower air conditioning efficiency and poor comfort level under the condition of temperature difference between the indoor and the outdoor due to the fact that outdoor fresh air is directly introduced into the fresh air conditioner in the prior art.
The invention provides a control method of a fresh air conditioner, wherein the fresh air conditioner comprises an indoor heat exchanger, a fresh air temperature adjusting pipeline, a four-way reversing valve, a compressor, an outdoor heat exchanger and a throttling device which are sequentially connected, the fresh air temperature adjusting pipeline is arranged in a fresh air pipeline in a penetrating manner, and a heating device is arranged on the fresh air temperature adjusting pipeline; the fresh air temperature adjusting device also comprises a bypass branch, wherein the bypass branch is connected to two ends of the fresh air temperature adjusting pipeline in parallel through a three-way reversing valve; the control method comprises the following steps:
when the fresh air conditioner starts a fresh air function, acquiring an operation mode of the fresh air conditioner;
when the operation mode is a heating mode, acquiring a first pipeline temperature T between the fresh air temperature adjusting pipeline and the four-way reversing valvein1And heating temperature threshold value Th；
Comparing the first pipeline temperature Tin1And the heating temperature threshold value ThTo do so by
At Tin1＜ThWhen the temperature of the indoor heat exchanger is higher than the temperature of the bypass branch, controlling the three-way reversing valve to communicate the indoor heat exchanger and the bypass branch and starting the heating device; or
At Tin1≥ThAnd when the temperature of the fresh air is regulated, the three-way reversing valve is controlled to be communicated with the indoor heat exchanger and the fresh air temperature regulating pipeline.
According to the control method of the fresh air conditioner provided by the invention, the temperature is Tin1≥ThDuring, control three-way reversing valve intercommunication indoor heat exchanger with the new trend pipeline of adjusting temperature further includes:
obtaining outdoor ambient temperature TwAnd a first preset ambient temperature value Te1；
Comparing the outdoor ambient temperature TwAnd the first preset ambient temperature value Te1To do so byAt Tw＞Te1When the temperature is higher than the preset temperature, the heating device is turned off; or
At Tw≤Te1And when the temperature is higher than the preset temperature, the heating device is started.
According to the control method of the fresh air conditioner provided by the invention, the temperature is Tw≤Te1When the heating device is turned on, the method further comprises the following steps:
obtaining a second preset environment temperature value Te2；
Comparing the outdoor ambient temperature TwAnd the second preset ambient temperature value Te2To do so by
At Te2＜Tw≤Te1When the power is lower than the first gear power, controlling the heating device to operate at the first gear power; or
At Tw≤Te2And controlling the heating device to operate under a second gear power, wherein the second gear power is greater than the first gear power.
According to the control method of the fresh air conditioner provided by the invention, the first pipeline temperature T is comparedin1And the heating temperature threshold value ThThen, the method further comprises the following steps:
after the interval of the preset time, the new first pipeline temperature T between the fresh air temperature adjusting pipeline and the four-way reversing valve is obtained againin1’；
Comparing the new first pipeline temperature Tin1' and the heating temperature threshold Th。
According to the control method of the fresh air conditioner provided by the invention, the temperature is Tin1＜ThDuring, control tee bend switching-over valve intercommunication indoor heat exchanger and bypass branch road, open heating device, further include:
the operating power of the heating device is 50% -100% of rated power.
According to the control method of the fresh air conditioner provided by the invention, after the operation mode of the fresh air conditioner is obtained, the control method further comprises the following steps:
when the operation mode is a refrigeration mode, the fresh air is obtainedA second pipeline temperature T between the temperature adjusting pipeline and the indoor heat exchangerin2And a refrigeration temperature threshold Tc；
Comparing the second pipeline temperature Tin2And the refrigeration temperature threshold value TcTo in order to
At Tin2＞TcWhen the temperature of the indoor heat exchanger is higher than the temperature of the bypass branch, controlling the three-way reversing valve to communicate the indoor heat exchanger and the bypass branch and closing the heating device; or
At Tin1≤TcAnd when the temperature of the fresh air is higher than the set temperature, the three-way reversing valve is controlled to be communicated with the indoor heat exchanger and the fresh air temperature adjusting pipeline, and the heating device is closed.
The invention also provides electronic equipment which comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor, wherein the processor executes the program to realize the steps of the control method of the fresh air conditioner.
The invention also provides a fresh air conditioner which comprises the electronic equipment.
According to the fresh air conditioner provided by the invention, the fresh air temperature regulating pipeline comprises a plurality of temperature regulating branch pipes which are connected in parallel, one ends of the temperature regulating branch pipes are connected to the indoor heat exchanger through first liquid dividing heads, and the other ends of the temperature regulating branch pipes are connected to the four-way reversing valve through second liquid dividing heads; and each temperature adjusting branch pipe is provided with a heating device.
According to the fresh air conditioner provided by the invention, the heating device is a heating coil wound on the outer side of the temperature adjusting branch pipe.
The fresh air conditioner is characterized in that a fresh air temperature adjusting pipeline is arranged in the fresh air pipeline, the fresh air temperature adjusting pipeline is selectively communicated by utilizing a three-way reversing valve according to the temperature of a refrigerant flowing into the fresh air temperature adjusting pipeline, so that when a fresh air function is started, the refrigerant in a refrigerant circulation loop can be subjected to secondary heat absorption or heat dissipation by utilizing the fresh air temperature adjusting pipeline, the heating efficiency and the refrigerating efficiency of the air conditioner are improved, meanwhile, when a heating mode is started in winter, a heating device can be selectively started according to the temperature of the refrigerant flowing into the fresh air temperature adjusting pipeline, the heat radiation of the heating device is led out through the fresh air pipeline, and the heating effect in winter is improved. This fresh air conditioner utilizes fresh air temperature adjusting pipeline and heating device, not only can improve the air-out effect of new trend, improves user's travelling comfort, can also improve heating and the refrigeration efficiency of air conditioner, reduces power consumption.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a fresh air conditioner according to the present invention;
FIG. 2 is a schematic view of the fresh air temperature adjusting pipeline installed in the fresh air pipeline;
FIG. 3 is a front view of the fresh air duct of FIG. 2;
FIG. 4 is a side view of the fresh air duct of FIG. 2;
FIG. 5 is a side view of the indoor unit of the fresh air conditioner provided in the present invention;
FIG. 6 is a front view of the indoor unit of the fresh air conditioner provided by the present invention;
FIG. 7 is a flow chart of a control method of the fresh air conditioner provided by the present invention;
FIG. 8 is a flow chart of another control method for a fresh air conditioner according to the present invention;
fig. 9 is a schematic diagram of an electronic device provided by the present invention.
Reference numerals are as follows:
1. an indoor heat exchanger; 2. A fresh air temperature adjusting pipeline; 21. A temperature regulating branch pipe;
22. a first liquid separation head; 23. A second liquid separation head; 3. A four-way reversing valve;
4. a compressor; 5. An outdoor heat exchanger; 6. A throttling device;
7. a heating device; 8. A bypass branch; 9. A three-way reversing valve;
10. a fresh air duct; 11. A cross-flow fan; 12. A first temperature sensor;
13. a second temperature sensor; 14. An outdoor temperature sensor; 15. An indoor unit;
100. an electronic device; 110. A processor; 120. A communication interface;
130. a memory; 140. A communication bus.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the embodiments of the present invention, it should be noted that the terms "first" and "second" are used for the sake of clarity in describing the numbering of the components of the product and do not represent any substantial difference, unless explicitly stated or limited otherwise. "upper", "lower", "left", "right", and the like are used only to indicate relative positional relationships, and when the absolute position of the object to be described is changed, the relative positional relationships may also be changed accordingly. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.
It is to be understood that, unless otherwise explicitly stated or limited, the term "coupled" is to be interpreted broadly, e.g., as meaning directly coupled or indirectly coupled through intervening media. Specific meanings of the above terms in the embodiments of the invention may be understood as specific cases by those of ordinary skill in the art.
As shown in fig. 1 to 6, a fresh air conditioner according to an embodiment of the present invention includes an indoor heat exchanger 1, a fresh air temperature adjusting pipeline 2, a four-way reversing valve 3, a compressor 4, an outdoor heat exchanger 5, and a throttling device 6, which are connected in sequence, wherein the fresh air temperature adjusting pipeline 2 is arranged in a fresh air pipeline 10 in a penetrating manner, and a heating device 7 is installed on the fresh air temperature adjusting pipeline 2. The fresh air conditioner also comprises a bypass branch 8, and the bypass branch 8 is connected in parallel with the two ends of the fresh air temperature adjusting pipeline 2 through a three-way reversing valve 9.
Specifically, as shown in fig. 1, when the fresh air conditioner is in a heating mode, the four-way reversing valve 3 is switched to a heating state, the compressor 4 compresses the refrigerant to make the refrigerant become high-temperature and high-pressure gas, the high-temperature and high-pressure refrigerant passes through the fresh air temperature adjusting pipeline 2 and the indoor heat exchanger 1 in sequence to perform heat dissipation and cooling twice to become medium-temperature and high-pressure liquid, the medium-temperature and high-pressure liquid is throttled and depressurized by the throttling device 6 to become low-temperature and low-pressure gas-liquid mixture, the low-temperature and low-pressure gas-liquid mixture absorbs heat in the outside air through the outdoor heat exchanger 5 to be vaporized to become gaseous state, and then returns to the compressor 4 to continue to be compressed to continue to circulate for heating. When the fresh air conditioner is in a refrigeration mode, the four-way reversing valve 3 is switched to a refrigeration state, the compressor 4 compresses the refrigerant to enable the refrigerant to become high-temperature high-pressure gas, the high-temperature high-pressure refrigerant passes through the outdoor heat exchanger 5 to emit heat into outside air to become medium-temperature high-pressure liquid, then the throttling device 6 throttles and reduces the pressure to change the high-temperature high-pressure liquid into low-temperature low-pressure gas-liquid mixture, the low-temperature low-pressure gas-liquid mixture sequentially passes through the indoor heat exchanger 1 and the fresh air temperature adjusting pipeline 2 to absorb heat twice to raise the temperature to become gaseous state, and then the gaseous state returns to the compressor 4 to continue to compress, and the circulation is continued to perform refrigeration.
As shown in fig. 2 to 4, the fresh air temperature adjusting pipeline 2 is arranged in the fresh air pipeline 10 in a penetrating manner, and a cross flow fan 11 is further installed in the fresh air pipeline 10 to drive the circulation of the fresh air. As shown in fig. 5 and 6, the fresh air duct 10 is installed in a casing of the indoor unit 15, and a fresh air outlet is opened below a front panel of the casing to introduce fresh air into the room. In the heating mode, when the refrigerant flows through the fresh air temperature adjusting pipeline 2, the refrigerant can dissipate heat to fresh air, so that secondary heat dissipation can be performed on the basis of primary heat dissipation of the indoor heat exchanger 1, the heat of the refrigerant is fully utilized, and the heating efficiency of the refrigerant is improved. Similarly, in the refrigeration mode, when the refrigerant flows through the fresh air temperature adjusting pipeline 2, the heat of fresh air can be absorbed, so that secondary heat absorption can be performed on the basis of primary heat absorption of the indoor heat exchanger 1, the cold quantity of the refrigerant is fully utilized, and the refrigeration efficiency of the refrigerant is improved.
In addition, as shown in fig. 1, bypass branches 8 are connected in parallel to two ends of the fresh air temperature adjusting pipeline 2, and the indoor heat exchanger 1 and the fresh air temperature adjusting pipeline 2 can be selectively communicated or the indoor heat exchanger 1 and the bypass branches 8 can be communicated through a three-way reversing valve 9. Because the heat absorption efficiency or the heat dissipation efficiency of the refrigerant is related to the temperature of the refrigerant, when the temperature of the refrigerant is lower than a heating temperature threshold value, the heat dissipation efficiency is greatly reduced; when the temperature of the refrigerant is higher than the refrigeration temperature threshold, the heat absorption efficiency of the refrigerant is greatly reduced. Therefore, whether the heat absorption or heat dissipation efficiency of the refrigerant is low can be judged according to the temperature of the refrigerant flowing into the fresh air temperature adjusting pipeline 2, if the efficiency is low, the indoor heat exchanger 1 and the bypass branch 8 can be selectively communicated, so that the refrigerant does not flow into the fresh air temperature adjusting pipeline 2, the flow resistance and the energy loss of the refrigerant are reduced, and the operation efficiency of the whole machine is kept. Because the heat absorption or heat dissipation capacity of the refrigerant is insufficient, the heat exchange between the refrigerant and fresh air can affect the efficiency of a subsequent compressor, and the operation efficiency of the whole machine is reduced.
Meanwhile, in the heating mode, the heating device 7 can be started, and the radiation heat dissipation of the heating device 7 is utilized to heat fresh air, so that the heating efficiency of the whole machine is improved. Even if the refrigerant circulation loop is not connected with the fresh air temperature adjusting pipeline 2 due to insufficient heating capacity of the refrigerant, the heating device 7 can still be started, and the heating device 7 can also operate under high-level power. In addition, when the refrigerant circulation loop is connected to the fresh air temperature adjusting pipeline 2 for secondary heat dissipation, the heating device 7 can be selectively turned on or turned off according to the outdoor environment temperature.
The fresh air conditioner provided by the embodiment is characterized in that the fresh air temperature adjusting pipeline 2 is arranged in the fresh air pipeline 10, the fresh air temperature adjusting pipeline 2 is selectively connected by utilizing the three-way reversing valve 9 according to the temperature of the refrigerant flowing into the fresh air temperature adjusting pipeline 2, so that when a fresh air function is started, the fresh air temperature adjusting pipeline 2 can be utilized to perform secondary heat absorption or heat dissipation on the refrigerant in the refrigerant circulation loop, the heating efficiency and the refrigerating efficiency of the air conditioner are improved, meanwhile, when a heating mode is started in winter, the heating device 7 can be selectively started according to the temperature of the refrigerant flowing into the fresh air temperature adjusting pipeline 2, the heat radiation of the heating device 7 is led out through the fresh air pipeline 10, and the heating effect in winter is increased. This fresh air conditioner utilizes fresh air temperature adjusting pipeline 2 and heating device 7, not only can improve the air-out effect of new trend, improves user's travelling comfort, can also improve heating and the refrigeration efficiency of air conditioner, reduces power consumption.
Further, as shown in fig. 1 to 4, the fresh air temperature adjusting pipeline 2 includes a plurality of temperature adjusting branch pipes 21 connected in parallel, one ends of the plurality of temperature adjusting branch pipes 21 are connected to the indoor heat exchanger 1 through a first liquid dividing head 22, and the other ends of the plurality of temperature adjusting branch pipes 21 are connected to the four-way reversing valve 3 through a second liquid dividing head 23. Each temperature control branch 21 is provided with a heating device 7. Further, the heating device 7 is a heating coil wound around the outside of the temperature-adjusting branch pipe 21, and specifically, an electromagnetic heating coil may be employed. Through setting up a plurality of branch pipes 21 that adjust the temperature in parallel, can increase the heat exchange area of the new trend in new trend temperature adjusting pipe way 2 and the new trend pipeline 10, improve heat exchange efficiency. Meanwhile, the heating device 7 is arranged on each temperature adjusting branch pipe 21, so that the heating area of the heating device 7 can be increased, the overall heating power of the heating device 7 can be flexibly adjusted, the total power can be adjusted by not only inputting different numbers of heating coils, but also adjusting the thermal power of each heating coil.
Fig. 7 is a flowchart of a control method of a fresh air conditioner according to an embodiment of the present invention. As shown in fig. 7, the control method of the fresh air conditioner includes the following steps:
step S100: when the fresh air conditioner starts the fresh air function, the operation mode of the fresh air conditioner is obtained.
Step S200: when the operation mode is the heating mode, acquiring a first pipeline temperature T between the fresh air temperature adjusting pipeline 2 and the four-way reversing valve 3in1And heating temperature threshold value Th. Wherein the first pipeline temperature Tin1The fresh air temperature can be acquired by a second temperature sensor 13 arranged on a pipeline between the fresh air temperature adjusting pipeline 2 and the four-way reversing valve 3.
Specifically, the second temperature sensor 13 may be located at the front end of the junction tee joint of the bypass branch 8 and the fresh air temperature adjusting pipeline 2, that is, between the junction tee joint and the four-way reversing valve 3. Heating temperature threshold ThThe preset value is determined mainly according to the type of the refrigerant, and the heating temperature thresholds of different refrigerants are different, and are not limited herein. If the temperature of the refrigerant is lower than the heating temperature threshold value, the heat dissipation efficiency of the refrigerant is reduced.
Step S300: comparing the first pipeline temperature Tin1And heating temperature threshold value ThTo in order to
At Tin1＜ThWhen the heating device is started, the three-way reversing valve 9 is controlled to communicate the indoor heat exchanger 1 and the bypass branch 8, and the heating device 7 is started.
Specifically, in this case, the heat dissipation efficiency of the refrigerant is reduced, so that the refrigerant directly flows into the indoor heat exchanger 1 through the bypass branch line 8, does not pass through the fresh air temperature adjusting pipeline 2, and does not perform secondary heat dissipation. Meanwhile, the heating device 7 is started, and the heating device 7 can operate under high-level power, so that radiation heat dissipation is performed, and the heating power of the whole machine is improved. In a particular embodiment, the heating means 7 is operated at a power of 50% to 100% of the rated power.
Or at Tin1≥ThWhen the temperature control device is used, the three-way reversing valve 9 is controlled to be communicated with the indoor heat exchanger 1 and the fresh air temperature adjusting pipeline 2.
In particular, in this case, the refrigerant has excellent heat dissipation efficiency, so that the refrigerant passes through the fresh air temperature adjusting pipeline 2 and the indoor heat exchanger 1 in sequence to dissipate heat twice, thereby improving the heating efficiency.
Further, as shown in fig. 8, step S300 further includes:
step S310: obtaining outdoor ambient temperature TwAnd a first preset ambient temperature value Te1. Wherein the outdoor ambient temperature TwCan be prepared from radix et rhizoma RheiAnd an outdoor temperature sensor 14 arranged in the outdoor unit acquires the data. A first preset ambient temperature value Te1Can be preset, for example, between 20 ℃ and 30 ℃, and in one specific embodiment, the first preset ambient temperature value Te1The temperature was 30 ℃. Furthermore, a first predetermined ambient temperature value Te1The air conditioner heating target temperature can be set by a user, or the air conditioner heating target temperature is directly set by the user or is slightly lower than the heating target temperature. When the outdoor temperature is higher than the first preset environment temperature value Te1And the heat of the fresh air per se can meet the use requirement, and additional radiation heat dissipation is not needed.
Step S320: comparing outdoor ambient temperature TwAnd a first preset ambient temperature value Te1At T tow＞Te1When so, the heating device 7 is closed; or at Tw≤Te1When this occurs, the heating device 7 is turned on.
Further, step S320 further includes:
step S321: obtaining a second preset environment temperature value Te2. Second preset ambient temperature value Te2Can be a predetermined value, such as a predetermined value between 5 ℃ and 15 ℃, and in one embodiment, the second predetermined ambient temperature value Te2Is 10 ℃. Furthermore, a second predetermined ambient temperature value Te2And can be set by the user.
Step S321: comparing outdoor ambient temperature TwAnd a second predetermined ambient temperature value Te2At T toe2＜Tw≤Te1When the power is lower than the first gear power, the heating device 7 is controlled to operate at the first gear power; or at Tw≤Te2And controlling the heating device 7 to operate under a second gear power, wherein the second gear power is greater than the first gear power. I.e. at Te2＜Tw≤Te1And the fresh air has certain heat, and the heating device 7 can be controlled to operate under low-gear power, for example, the heating power is 0-50% of rated power, so as to perform auxiliary heat dissipation. At Tw≤Te2When the heat of the fresh air is low, the heating device 7 can be controlled to operate under high-level power, such as heatingThe thermal power is 50% -100% of rated power to enhance the radiation heat dissipation effect.
Further, after step S300, the method further includes:
after the interval of the preset time, the new first pipeline temperature T between the fresh air temperature adjusting pipeline 2 and the four-way reversing valve 3 is obtained againin1'; comparing the new first pipeline temperature Tin1' and heating temperature threshold Th. The time interval may be set according to the temperature adjustment frequency, and in one specific embodiment, the time interval is 30 seconds. The temperature is collected and compared again after the preset time interval, so that the control strategy can be adjusted timely according to the temperature change, and the efficiency of the whole machine is further improved.
On the basis of the above embodiment, as shown in fig. 8, after step S100, the method further includes:
step S400: when the operation mode is the refrigeration mode, acquiring a second pipeline temperature T between the fresh air temperature adjusting pipeline 2 and the indoor heat exchanger 1in2And a refrigeration temperature threshold Tc. Wherein the second pipeline temperature Tin2Can acquire the temperature through the first temperature sensor 12 arranged on the pipeline between the indoor heat exchanger 1 and the fresh air temperature adjusting pipeline 2.
Specifically, the first temperature sensor 12 may be located between the three-way selector valve 9 and the indoor heat exchanger 1. Refrigeration temperature threshold TcThe preset value is determined mainly according to the type of the refrigerant, and the refrigeration temperature thresholds of different refrigerants are different, and are not limited herein. If the temperature of the refrigerant is higher than the refrigeration temperature threshold, the heat absorption efficiency of the refrigerant is reduced. It should be noted that step S400 and step S200 belong to parallel steps, that is, the operation mode of the fresh air conditioner is the cooling mode or the heating mode.
Step S500: comparing the second pipeline temperature Tin2And a refrigeration temperature threshold TcTo do so by
At Tin2＞TcAnd when the indoor heat exchanger 1 is communicated with the bypass branch 8, the three-way reversing valve 9 is controlled, and the heating device 7 is closed.
Specifically, in this case, the heat absorption efficiency of the refrigerant is reduced, and therefore the refrigerant directly flows into the four-way selector valve 3 through the bypass branch 8, does not pass through the fresh air temperature adjustment line 2, and does not absorb heat for the second time.
Or at Tin1≤TcWhen the temperature control device is used, the three-way reversing valve 9 is controlled to be communicated with the indoor heat exchanger 1 and the fresh air temperature adjusting pipeline 2, and the heating device 7 is closed.
In particular, in this case, the refrigerant has excellent heat absorption efficiency, so that the refrigerant passes through the indoor heat exchanger 1 and the fresh air temperature adjusting pipeline 2 in sequence to absorb heat twice, thereby improving the refrigeration efficiency.
As shown in fig. 9, the present invention further provides an electronic device 100, which includes a memory 130, a processor 110, and a computer program stored in the memory 130 and executable on the processor 110, wherein the processor 110 executes the computer program to implement the steps of the control method of the fresh air conditioner. As shown in fig. 9, the electronic device may include: a processor 110, a communication Interface (Communications Interface)120, a memory (memory)130 and a communication bus 140, wherein the processor 110, the communication Interface 120 and the memory 130 are communicated with each other via the communication bus 140. The processor 110 may call logic instructions in the memory 130 to execute the control method of the fresh air conditioner.
In addition, the logic instructions in the memory 130 may be implemented in the form of software functional units and stored in a computer readable storage medium when the logic instructions are sold or used as independent products. Based on such understanding, the technical solution of the present invention or a part thereof which substantially contributes to the prior art may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In another aspect, the present invention further provides a computer program product, where the computer program product includes a computer program stored on a non-transitory computer-readable storage medium, where the computer program includes program instructions, and when the program instructions are executed by a computer, the computer is capable of executing the control method of the fresh air conditioner provided in the above-mentioned method embodiments.
In still another aspect, an embodiment of the present invention further provides a non-transitory computer-readable storage medium, on which a computer program is stored, where the computer program is implemented to execute the control method of the fresh air conditioner provided in each of the above embodiments when executed by a processor.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment may be implemented by software plus a necessary general hardware platform, and may also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The control method of the fresh air conditioner is characterized in that the fresh air conditioner comprises an indoor heat exchanger, a fresh air temperature adjusting pipeline, a four-way reversing valve, a compressor, an outdoor heat exchanger and a throttling device which are sequentially connected, wherein the fresh air temperature adjusting pipeline is connected between the four-way reversing valve and the indoor heat exchanger, the fresh air temperature adjusting pipeline is arranged in the fresh air pipeline in a penetrating manner, and the fresh air temperature adjusting pipeline is provided with a heating device; the fresh air temperature adjusting device also comprises a bypass branch, wherein the bypass branch is connected to two ends of the fresh air temperature adjusting pipeline in parallel through a three-way reversing valve; the control method comprises the following steps:
when the fresh air conditioner starts a fresh air function, acquiring an operation mode of the fresh air conditioner;
when the operation mode is a heating mode, acquiring a first pipeline temperature T between the fresh air temperature adjusting pipeline and the four-way reversing valvein1And heating temperature threshold value ThSaid heating temperature threshold value ThThe value of (2) is determined according to the refrigerant type;
comparing the first pipeline temperature Tin1And the heating temperature threshold value ThTo do so by
At Tin1＜ThWhen the indoor heat exchanger is in the closed state, the three-way reversing valve is controlled to be communicated with the indoor heat exchanger and the bypass branch, and the heating device is started; or
At Tin1≥ThAnd when the temperature control device is used, the three-way reversing valve is controlled to be communicated with the indoor heat exchanger and the fresh air temperature adjusting pipeline.
2. The method as claimed in claim 1, wherein the time T is Tin1≥ThWhen it is controlled, control theThe tee bend switching-over valve intercommunication indoor heat exchanger with the new trend pipeline of adjusting temperature further includes:
obtaining outdoor ambient temperature TwAnd a first preset ambient temperature value Te1；
Comparing the outdoor ambient temperature TwAnd the first preset ambient temperature value Te1To do so by
At Tw＞Te1When the temperature is higher than the preset temperature, the heating device is closed; or alternatively
At Tw≤Te1And when the temperature is higher than the preset temperature, the heating device is started.
3. The method as claimed in claim 2, wherein the time T is Tw≤Te1When the heating device is turned on, the method further comprises the following steps:
obtaining a second preset environment temperature value Te2；
Comparing the outdoor ambient temperature TwAnd the second preset ambient temperature value Te2To do so by
At Te2＜Tw≤Te1When the power is lower than the first gear power, controlling the heating device to operate at the first gear power; or
At Tw≤Te2And controlling the heating device to operate under a second gear power, wherein the second gear power is greater than the first gear power.
4. The method as claimed in claim 1, wherein the comparison of the first pipeline temperature Tin1And the heating temperature threshold value ThThen, the method further comprises the following steps:
after the interval of the preset time, the new first pipeline temperature T between the fresh air temperature adjusting pipeline and the four-way reversing valve is obtained againin1’；
Comparing the new first pipeline temperature Tin1' and the heating temperature threshold value Th。
5. According to claim 1The control method of the fresh air conditioner is characterized in that the temperature T isin1＜ThDuring, control tee bend switching-over valve intercommunication indoor heat exchanger and bypass branch road, open heating device, further include:
the operating power of the heating device is 50% -100% of rated power.
6. The method for controlling a fresh air conditioner according to any one of claims 1 to 5, further comprising, after acquiring the operation mode of the fresh air conditioner:
when the operation mode is a refrigeration mode, acquiring a second pipeline temperature T between the fresh air temperature adjusting pipeline and the indoor heat exchangerin2And a refrigeration temperature threshold TcSaid refrigeration temperature threshold value TcThe value of (b) is determined according to the refrigerant type;
comparing the second pipeline temperature Tin2And the refrigeration temperature threshold value TcTo do so by
At Tin2＞TcWhen the temperature of the indoor heat exchanger is higher than the temperature of the bypass branch, controlling the three-way reversing valve to communicate the indoor heat exchanger and the bypass branch and closing the heating device; or
At Tin1≤TcAnd when the temperature of the fresh air is higher than the set temperature, the three-way reversing valve is controlled to be communicated with the indoor heat exchanger and the fresh air temperature adjusting pipeline, and the heating device is closed.
7. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the steps of the method for controlling a fresh air conditioner according to any one of claims 1 to 6 are implemented when the processor executes the program.
8. A fresh air conditioner comprising the electronic device of claim 7.
9. The fresh air conditioner as claimed in claim 8, wherein the fresh air temperature adjusting pipeline comprises a plurality of temperature adjusting branch pipes connected in parallel, one ends of the temperature adjusting branch pipes are connected to the indoor heat exchanger through a first liquid dividing head, and the other ends of the temperature adjusting branch pipes are connected to the four-way reversing valve through a second liquid dividing head; and each temperature adjusting branch pipe is provided with a heating device.
10. The fresh air conditioner as claimed in claim 9, wherein the heating means is a heating coil wound around the outside of the temperature-adjusting branch pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011438169.7A CN112539532B (en) | 2020-12-07 | 2020-12-07 | Fresh air conditioner and control method and equipment thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011438169.7A CN112539532B (en) | 2020-12-07 | 2020-12-07 | Fresh air conditioner and control method and equipment thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112539532A CN112539532A (en) | 2021-03-23 |
| CN112539532B true CN112539532B (en) | 2022-07-19 |
Family
ID=75019967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011438169.7A Active CN112539532B (en) | 2020-12-07 | 2020-12-07 | Fresh air conditioner and control method and equipment thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112539532B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113685912B (en) * | 2021-08-02 | 2023-03-21 | 重庆海尔空调器有限公司 | Control method of fresh air conditioner |
| CN114811749A (en) * | 2022-04-01 | 2022-07-29 | 北京小米移动软件有限公司 | Air conditioner, control method and device thereof and storage medium |
| CN114811735B (en) * | 2022-04-01 | 2024-06-18 | 北京小米移动软件有限公司 | Air conditioner, control method and device thereof and storage medium |
| CN115371153B (en) * | 2022-08-22 | 2024-07-05 | 珠海格力电器股份有限公司 | Air conditioner and control method |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07133968A (en) * | 1993-11-09 | 1995-05-23 | Ryuichi Kurokawa | Automated operation control method of air conditioner in play ground |
| WO2015013603A1 (en) * | 2013-07-26 | 2015-01-29 | Whirlpool Corporation | Split air conditioning system with a single outdoor unit |
| CN106403041A (en) * | 2016-10-27 | 2017-02-15 | 青岛海尔空调器有限总公司 | Air conditioner and control method thereof |
| CN106839228A (en) * | 2017-04-01 | 2017-06-13 | 重庆大学 | A kind of air-conditioning system and its cooling control method with fresh air dehumidification function |
| CN107883537A (en) * | 2017-10-02 | 2018-04-06 | 广东美的制冷设备有限公司 | New blower fan system and its control method, device and computer-readable recording medium |
| CN108317650A (en) * | 2018-02-28 | 2018-07-24 | 广东省建筑科学研究院集团股份有限公司 | A kind of multiple air conditioner heat pump system with dedicated fresh air |
| CN108426319A (en) * | 2017-02-13 | 2018-08-21 | 上海海立电器有限公司 | A kind of fresh air conditioner all-in-one machine |
| CN110470031A (en) * | 2019-07-30 | 2019-11-19 | 青岛海尔空调器有限总公司 | Control method and air conditioner indoor unit for air conditioner indoor unit |
| CN110701686A (en) * | 2018-07-09 | 2020-01-17 | 青岛海尔空调器有限总公司 | Fresh air cabinet type air conditioner indoor unit |
| CN111121173A (en) * | 2018-10-31 | 2020-05-08 | 青岛海尔智能技术研发有限公司 | Fresh air conditioner |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3189884B2 (en) * | 1997-10-06 | 2001-07-16 | 日本電気株式会社 | Air conditioner with outside air introduction function |
| JP2001324193A (en) * | 2000-05-15 | 2001-11-22 | Karaushi Takeo | Device and method for introducing fresh air |
| WO2013074973A1 (en) * | 2011-11-17 | 2013-05-23 | Enverid Systems, Inc. | Method and system for conditioning air in an enclosed environment with distributed air circuilatioin systems |
| CN103528136B (en) * | 2013-10-17 | 2016-08-24 | 深圳麦克维尔空调有限公司 | Fresh air handling units and control system thereof |
| CN106765823B (en) * | 2017-03-23 | 2023-04-07 | 福州鹏飞制冷设备有限公司 | Energy-saving air treatment equipment |
| CN206959218U (en) * | 2017-04-01 | 2018-02-02 | 重庆大学 | A kind of air-conditioning system with fresh air dehumidification function |
| CN211854298U (en) * | 2018-08-17 | 2020-11-03 | 帝思迈环境设备（上海）有限公司 | VRV central air conditioner with dehumidification fresh air function |
| CA3132040A1 (en) * | 2019-03-01 | 2020-09-10 | Henry I. Patel | Ptac unit with dynamic intelligent air management system |
| CN110332624A (en) * | 2019-08-09 | 2019-10-15 | 江苏碳元绿色建筑科技有限公司 | Fresh air dehumidifier and fresh air dehumidifying system |
-
2020
- 2020-12-07 CN CN202011438169.7A patent/CN112539532B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07133968A (en) * | 1993-11-09 | 1995-05-23 | Ryuichi Kurokawa | Automated operation control method of air conditioner in play ground |
| WO2015013603A1 (en) * | 2013-07-26 | 2015-01-29 | Whirlpool Corporation | Split air conditioning system with a single outdoor unit |
| CN106403041A (en) * | 2016-10-27 | 2017-02-15 | 青岛海尔空调器有限总公司 | Air conditioner and control method thereof |
| CN108426319A (en) * | 2017-02-13 | 2018-08-21 | 上海海立电器有限公司 | A kind of fresh air conditioner all-in-one machine |
| CN106839228A (en) * | 2017-04-01 | 2017-06-13 | 重庆大学 | A kind of air-conditioning system and its cooling control method with fresh air dehumidification function |
| CN107883537A (en) * | 2017-10-02 | 2018-04-06 | 广东美的制冷设备有限公司 | New blower fan system and its control method, device and computer-readable recording medium |
| CN108317650A (en) * | 2018-02-28 | 2018-07-24 | 广东省建筑科学研究院集团股份有限公司 | A kind of multiple air conditioner heat pump system with dedicated fresh air |
| CN110701686A (en) * | 2018-07-09 | 2020-01-17 | 青岛海尔空调器有限总公司 | Fresh air cabinet type air conditioner indoor unit |
| CN111121173A (en) * | 2018-10-31 | 2020-05-08 | 青岛海尔智能技术研发有限公司 | Fresh air conditioner |
| CN110470031A (en) * | 2019-07-30 | 2019-11-19 | 青岛海尔空调器有限总公司 | Control method and air conditioner indoor unit for air conditioner indoor unit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112539532A (en) | 2021-03-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112539532B (en) | Fresh air conditioner and control method and equipment thereof | |
| WO2019134509A1 (en) | Outdoor unit, air conditioning system, and control method | |
| CN104748464A (en) | Multi-online defrosting method and device for air conditioning system and air conditioner | |
| CN110986206A (en) | Total heat fresh air exchange equipment with isothermal or temperature-rising dehumidification function | |
| CN103032980B (en) | A kind of handpiece Water Chilling Units | |
| CN202371919U (en) | Air conditioner | |
| CN106322595A (en) | Refrigeration and dehumidification system, refrigeration and dehumidification method and refrigeration and dehumidification air conditioner for data centres | |
| CN107024046A (en) | A kind of air-conditioner control method and air conditioner | |
| CN106765571B (en) | Air conditioning system and air conditioner indoor terminal applied to same | |
| KR101227751B1 (en) | Heat pump type hot water supply system using waste heat | |
| KR101687650B1 (en) | Air conditioner using heat pump | |
| CN111006301A (en) | Carbon dioxide cascade heating system and control method thereof | |
| CN112393348A (en) | Heat pump air conditioning system and control method and design method thereof | |
| CN211650543U (en) | Total heat fresh air exchange equipment with isothermal or temperature-rising dehumidification function | |
| KR100696718B1 (en) | Air Conditioner System for Heating and Dehumidificaton | |
| KR20220085243A (en) | A cooling system for vehicle | |
| CN114992809A (en) | Multi-mode machine room air conditioning system and control method thereof | |
| US11796236B2 (en) | Combined chiller and free cooling system for operation at low ambient temperature | |
| CN102095233B (en) | Air source heat pump device for simultaneously producing water and air | |
| CN210605494U (en) | Carbon dioxide overlapping type heating system | |
| CN208238095U (en) | A kind of air-conditioning system | |
| CN110925878A (en) | Combined air conditioning unit and control method, device and controller thereof | |
| CN214065124U (en) | Heat pump air conditioning system | |
| CN111102762A (en) | Multifunctional air source heat pump system | |
| CN110686345A (en) | Efficient building refrigerating machine room and control method thereof |
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 |