CN109210821B - Capillary network and indoor unit parallel temperature control system based on double cylinders and double reservoirs - Google Patents
Capillary network and indoor unit parallel temperature control system based on double cylinders and double reservoirs Download PDFInfo
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- 238000001704 evaporation Methods 0.000 claims abstract description 53
- 230000008878 coupling Effects 0.000 claims abstract description 50
- 238000010168 coupling process Methods 0.000 claims abstract description 50
- 238000005859 coupling reaction Methods 0.000 claims abstract description 50
- 239000007788 liquid Substances 0.000 claims abstract description 34
- 238000007791 dehumidification Methods 0.000 claims abstract description 25
- 239000003507 refrigerant Substances 0.000 claims description 61
- 238000001514 detection method Methods 0.000 claims description 32
- 230000008020 evaporation Effects 0.000 claims description 25
- 238000003860 storage Methods 0.000 claims description 19
- 238000010438 heat treatment Methods 0.000 claims description 18
- 238000005057 refrigeration Methods 0.000 claims description 17
- 230000008859 change Effects 0.000 claims description 9
- 230000005855 radiation Effects 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 230000005494 condensation Effects 0.000 claims description 5
- 238000009833 condensation Methods 0.000 claims description 5
- 238000009827 uniform distribution Methods 0.000 claims description 5
- 230000001737 promoting effect Effects 0.000 claims description 2
- 238000004378 air conditioning Methods 0.000 abstract description 7
- 230000033228 biological regulation Effects 0.000 abstract description 3
- 238000001816 cooling Methods 0.000 description 5
- 230000010349 pulsation Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
Classifications
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- 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
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- 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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/56—Remote control
- F24F11/58—Remote control using Internet communication
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- 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
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- 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
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- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
- F25B41/26—Disposition of valves, e.g. of on-off valves or flow control valves of fluid flow reversing valves
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- 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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Human Computer Interaction (AREA)
- Fluid Mechanics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides a temperature control system based on a capillary network of double cylinders and double liquid reservoirs and an indoor unit in parallel connection, and belongs to the field of indoor temperature control. The technical scheme of the invention is as follows: through the double-cylinder compressor that has different working volumes, the indoor temperature control system is parallelly connected with capillary network to the indoor machine of better cooperation, through setting up the different evaporating temperature of indoor heat exchanger and capillary network coupling heat exchanger and realize indoor machine low evaporating temperature dehumidification, capillary network heat transfer circuit high evaporating temperature maintains indoor temperature invariable, when solving among the traditional air conditioning system based on single cylinder compressor open indoor machine dehumidification mode, because the evaporating temperature of too low makes indoor temperature too cold, arouses user's uncomfortable sense, really realizes the humiture independent regulation of indoor air, dehumidification does not cool down.
Description
Technical Field
The invention relates to an indoor temperature control technology, in particular to a technology of a temperature control system based on a capillary network of double cylinders and double liquid reservoirs and an indoor unit in parallel connection.
Background
Noise of a traditional air conditioning system and traditional floor heating, defrosting of an outdoor unit cause problems of reduced indoor temperature, slow response of floor heating heat exchange and the like, but because the refrigerant in the indoor unit heat exchanger and the capillary network coupling heat exchanger in the system comes from a single-cylinder compression heat exchange pipeline of the same outdoor unit, the working volume of the single-cylinder compressor is fixed, and only the refrigerant in the same pressure state can be output, even if the indoor temperature control system is provided with the indoor heat exchanger and two independent heat exchangers of the coupling heat exchanger for the capillary network, the indoor temperature control system can only have uniform evaporation temperature, however, in actual temperature control system operation, when the indoor unit is required to be utilized for dehumidifying the indoor, the evaporation temperature of the indoor heat exchanger is often required to be lower than the dew point temperature of indoor air, and in order to achieve better dehumidification effect, the evaporation temperature of the indoor heat exchanger is often very low, for example, when the dew point temperature of the indoor air is 16 ℃, the evaporation temperature of the indoor unit heat exchanger is usually 8 ℃, and the working temperature of the capillary network is generally similar to the indoor proper temperature (for example, the temperature is 32/29 ℃ in refrigeration, 17/20 ℃ in the actual temperature). At this time, if the state of the compressor is adjusted so that the evaporating temperature of the indoor unit heat exchanger is 8 ℃, the evaporating temperature of the coupling heat exchanger for the capillary network is also adjusted to be 8 ℃, and because the capillary network has large heat exchange area and high heat exchange efficiency, the short dehumidification time can enable the indoor temperature to be rapid, users feel uncomfortable, but if the capillary network heat exchange loop is closed, the indoor temperature is greatly changed due to the fact that a cold source or a heat source is the same, therefore, when the single-cylinder compressor capable of only realizing single evaporating temperature is adopted, when the indoor unit of the air conditioner is adjusted to be in a dehumidification mode, the evaporating temperature of the indoor unit heat exchanger and the coupling heat exchanger of the capillary network heat exchange system are reduced to be below the dew point temperature (such as 8 ℃), so that the working temperature of the capillary network heat exchange system is rapidly reduced, cold uncomfortable feeling of the users is caused, and the indoor temperature control system which is connected with the indoor unit of the air conditioner in parallel connection cannot well exert the maximum advantage.
At present, there is no effective method for solving the above problems.
Disclosure of Invention
The invention aims to provide a temperature control system based on a capillary network with double cylinders and double liquid reservoirs and an indoor unit, which solves the problems that the conventional indoor temperature control system with low heating efficiency is combined when an air conditioning system heats, and when the indoor unit of the air conditioning system is adjusted to a dehumidification mode, the evaporation temperature of a coupling heat exchanger of the indoor heat exchanger and the capillary network heat exchange system is reduced below the dew point temperature, so that the working temperature of the capillary network heat exchange system is rapidly reduced, cold uncomfortable feeling of a user is caused, the condition of condensation on the surface of the capillary network can occur, inconvenience is brought to the user, and the indoor temperature control system with the capillary network and the air conditioning indoor unit connected in parallel can not well exert the maximum advantage, and the simultaneous control of the indoor air temperature and the indoor humidity is realized.
The invention solves the technical problems and adopts the following technical scheme: the temperature control system based on the capillary network of double cylinders and double liquid reservoirs and connected in parallel with an indoor unit comprises an outdoor unit and an indoor unit, wherein the indoor unit comprises an indoor heat exchanger and a throttling device I, the outdoor unit comprises a double cylinder compressor, a liquid reservoir I, a liquid reservoir II, a four-way valve I, a four-way valve II and an outdoor heat exchanger, the system also comprises a capillary network loop, a detection unit, a control unit, a throttling device II and a coupling heat exchanger,
the control unit is arranged in the indoor unit, the exhaust port of the double-cylinder compressor is respectively connected with the D end of the first four-way valve and the D end of the second four-way valve, the lower end of the double-cylinder compressor is respectively connected with one end of the first liquid storage device and one end of the second liquid storage device through corresponding air inlets of the air cylinders, the other end of the first liquid storage device is connected with the S end of the first four-way valve, the other end of the second liquid storage device is connected with the S end of the second four-way valve, the C end of the second four-way valve is respectively connected with one end of the outdoor heat exchanger and the C end of the first four-way valve, the other end of the outdoor heat exchanger is respectively connected with one end of the first throttling device and one end of the second throttling device, the other end of the first throttling device is connected with the E end of the first four-way valve through the indoor heat exchanger, and the capillary network loop is connected with the coupling heat exchanger;
the control unit is arranged in the indoor unit, and the detection unit is connected with the control unit;
the detection unit is used for detecting temperature and humidity information of indoor air and transmitting the detected temperature and humidity information of the indoor air to the control unit;
the control unit is used for selectively starting the air conditioner to enter a corresponding mode according to the difference value between the set indoor temperature and humidity information and the detected indoor temperature and humidity information, so as to control the outdoor unit and/or the indoor unit and/or the capillary network loop to work;
the double-cylinder compressor is matched with the two liquid reservoirs, so that independent suction of refrigerants in different pressure states can be realized. When the evaporating/condensing temperatures of the indoor heat exchanger and the coupling heat exchanger are different, for example, the indoor heat exchanger and the coupling heat exchanger are synchronously realized to dehumidify at the evaporating temperature lower than the dew point temperature, and the coupling heat exchanger is used for maintaining the working state of the constant indoor temperature and the constant indoor temperature at the higher evaporating temperature, the double-reservoir arrangement of the air suction side of the compressor avoids the mixed pulsation of different air suction pressures on the air suction side of the compressor of the single-reservoir, the independent suction of different air suction pressures maintains the stability of the air suction side of the compressor, and the reliability of the compressor is ensured.
In particular, the modes include a rapid cooling mode, a rapid heating mode, a dehumidification mode, an individual cooling mode, and an individual heating mode.
Further, when the air conditioner is started to enter a quick refrigeration mode, the outdoor unit starts to work, after being discharged from the compressor, refrigerant is divided into two paths through a first four-way valve and a second four-way valve respectively, the refrigerant is gathered to the outdoor heat exchanger to be subjected to heat conversion into low-temperature refrigerant, the low-temperature refrigerant is divided into two paths, one path of the low-temperature refrigerant passes through a first throttling device and flows into the indoor heat exchanger, then the high-temperature refrigerant flows back into a first liquid storage device of the compressor through the first four-way valve again, enters the compressor through a corresponding air inlet and is ready to enter the next working cycle, the air conditioner indoor unit starts the quick refrigeration mode at the moment, the first throttling device is started, and the indoor heat exchanger refrigerates indoor air at a set evaporation temperature;
the other way is that the low-temperature refrigerant flows into the coupling heat exchanger through the throttling device II, then the high-temperature refrigerant flows back to the liquid storage device II of the compressor through the four-way valve II again, the refrigerant enters the coupling heat exchanger loop to exchange heat with a part of pipe sections of the capillary network loop, and a water pump on the capillary network loop starts to work so as to promote the medium flow in the capillary network and accelerate the uniform distribution of the heat of the whole indoor capillary network; the evaporating temperature of the coupling heat exchanger can be different from the evaporating temperature of the indoor heat exchanger according to the requirement;
when the detection unit detects that the indoor temperature reaches a set value or reaches within a set range of the set value, the first throttling device is closed, the rapid refrigeration mode of the air conditioner indoor unit is stopped, only the capillary network loop performs radiation heat exchange, the temperature and humidity change rate of indoor air are detected in real time, and the indoor temperature is maintained within a fluctuatable range of the set temperature by adjusting the opening degree of the second throttling device in real time.
Specifically, when the air conditioner is started and enters a rapid heating mode, the outdoor unit starts to work, refrigerant is discharged from the compressor and then is divided into two paths through a first four-way valve and a second four-way valve respectively, the two paths are collected to the outdoor heat exchanger for heat conversion and then are divided into two paths, one path of the refrigerant passes through a first throttling device and flows into the indoor heat exchanger, then the low-temperature refrigerant flows back to a first liquid storage device of the compressor through the first four-way valve again, the air conditioner indoor unit starts the rapid heating mode, and the first throttling device is opened;
the other way is that the high-temperature refrigerant flows into the coupling heat exchanger through the second throttling device, then the low-temperature refrigerant flows back to the second reservoir of the compressor through the second four-way valve, the second throttling device is opened, the refrigerant entering the coupling heat exchanger loop exchanges heat with part of the pipe section of the capillary network loop, and the water pump on the capillary network loop starts to work so as to promote the medium flow in the capillary network and accelerate the uniform distribution of the heat of the whole indoor capillary network; the condensing temperature of the coupling heat exchanger can be different from that of the indoor heat exchanger according to the requirement;
when the detection unit detects that the indoor temperature reaches a set value or reaches within a set range of the set value, the first throttling device is closed, the rapid refrigeration mode of the air conditioner indoor unit is stopped, only the capillary network loop performs radiation heat exchange, the temperature and humidity change rate of indoor air are detected in real time, and the indoor temperature is maintained within a fluctuatable range of the set temperature by adjusting the opening degree of the second throttling device in real time.
Still further, when the air conditioner is started to enter the dehumidification mode, the outdoor unit starts to work, the throttling device is started, the indoor unit starts the dehumidification mode, at the moment, the air conditioner sets different evaporation temperatures for the indoor heat exchanger and the coupling heat exchanger respectively, two paths of low-temperature refrigerants are changed into high-temperature refrigerants with different pressures after heat exchange of the heat exchangers with different evaporation temperatures, and as the double-cylinder double-reservoir compressor adopts the double-reservoir to realize independent suction, the independent suction of the two high-temperature refrigerants with different pressures can be realized, the two high-temperature refrigerants do not collide with each other, so that the lower evaporation temperature of the coupling heat exchanger maintains the refrigeration effect, and meanwhile, the indoor heat exchanger realizes the dehumidification effect on indoor air in a condensation mode at the ultralow evaporation temperature lower than the dew point temperature.
Specifically, when the air conditioner is started to enter an independent refrigerating mode or an independent heating mode, the outdoor unit starts to work, only the second throttling device is started, the capillary network loop performs radiation heat exchange, meanwhile, the temperature change rate of indoor air is detected in real time through the detection unit, the opening degree of the second throttling device is controlled to be adjusted in real time, and the indoor temperature is maintained within a fluctuation range of the set temperature.
Still further, the detecting unit is a temperature and humidity sensor.
The system specifically comprises an intelligent terminal and a server, wherein the intelligent terminal and the control unit are connected with the server;
the intelligent terminal is used for setting the home time of the user and indoor temperature and humidity information and transmitting the set home time of the user and indoor temperature and humidity information to the server;
the server is used for transmitting the set user home time, indoor temperature and humidity information to the control unit after receiving the information, and simultaneously storing a list;
the control unit is used for controlling the indoor unit, the outdoor unit and the capillary network loop to start at the set user home time after receiving the set user home time and the indoor temperature and humidity information, controlling the detection unit to start detecting the temperature and humidity information of the indoor air when the outdoor unit and/or the indoor unit and/or the capillary network loop are started, transmitting the detected temperature and humidity information of the indoor air to the control unit, and selectively starting the air conditioner to enter a corresponding mode according to the difference value between the set temperature and humidity information of the indoor air and the detected temperature and humidity information of the indoor air so as to control the outdoor unit and/or the indoor unit and/or the capillary network loop to work.
Still further, intelligent terminal and the control unit are all connected with the server through wifi module.
The indoor unit dehumidification system has the beneficial effects that through the temperature control system based on the double-cylinder double-reservoir capillary network and the indoor unit in parallel, the double-cylinder compressor with different working volumes is used, the indoor unit and the capillary network parallel indoor temperature control system are matched better, the indoor unit low evaporation temperature dehumidification is realized through setting different evaporation temperatures of the indoor heat exchanger and the capillary network coupling heat exchanger, the high evaporation temperature of the capillary network heat exchange loop maintains the indoor temperature constant, and the problem that when the indoor unit dehumidification mode is started in the traditional air conditioning system based on the single-cylinder compressor, the indoor temperature is too cold due to the too low evaporation temperature, so that user uncomfortable feeling is caused, and the independent regulation of the indoor air temperature and humidity and dehumidification without temperature reduction are really realized.
Drawings
FIG. 1 is a schematic diagram of the structure of a temperature control system based on a capillary network of double-cylinder double-reservoir and an indoor unit connected in parallel in an embodiment.
Wherein 101 is a double-cylinder compressor, 102 is a first reservoir, 103 is a second reservoir, 104 is a second four-way valve, 105 is a first four-way valve, 106 is an outdoor heat exchanger, 107 is a first throttling device, 108 is an indoor heat exchanger, 109 is a second throttling device, 110 is a coupling heat exchanger, 111 is a water pump, 112 is a first three-way valve, and 113 is a second three-way valve.
Detailed Description
The technical scheme of the invention is described in detail below with reference to the embodiment and the attached drawings.
The invention relates to a temperature control system based on a capillary network of double-cylinder double-reservoir and an indoor unit in parallel connection, which comprises an outdoor unit and an indoor unit, wherein the indoor unit comprises an indoor heat exchanger and a throttling device I, the outdoor unit comprises a double-cylinder compressor, a first reservoir, a second reservoir, a first four-way valve, a second four-way valve and an outdoor heat exchanger, the system also comprises a capillary network loop, a detection unit, a control unit, a throttling device II and a coupling heat exchanger,
the control unit is arranged in the indoor unit, the upper end of the double-cylinder compressor is respectively connected with the D end of the first four-way valve and the D end of the second four-way valve, the lower end of the double-cylinder compressor is respectively connected with one end of the first liquid storage device and one end of the second liquid storage device through corresponding air inlets of the air cylinders, the other end of the first liquid storage device is connected with the S end of the first four-way valve, the other end of the second liquid storage device is connected with the S end of the second four-way valve, the C end of the second four-way valve is respectively connected with one end of the outdoor heat exchanger and the C end of the first four-way valve, the other end of the outdoor heat exchanger is respectively connected with one end of the first throttling device and one end of the second throttling device, the other end of the first throttling device is connected with the E end of the first four-way valve through the indoor heat exchanger, and the capillary network loop is connected with the coupling heat exchanger; the control unit is arranged in the indoor unit, and the detection unit is connected with the control unit; the detection unit is used for detecting temperature and humidity information of the indoor air and transmitting the detected temperature and humidity information of the indoor air to the control unit; the control unit is used for selectively starting the air conditioner to enter a corresponding mode according to the difference value between the set indoor temperature and humidity information and the detected indoor temperature and humidity information, so as to control the outdoor unit and/or the indoor unit and/or the capillary network loop to work;
here, the double-cylinder compressor is matched with two liquid storages, so that independent suction of the refrigerants in different pressure states can be realized. When the evaporating/condensing temperatures of the indoor heat exchanger and the coupling heat exchanger are different, for example, the indoor heat exchanger and the coupling heat exchanger are synchronously realized to dehumidify at the evaporating temperature lower than the dew point temperature, and the coupling heat exchanger is used for maintaining the working state of the constant indoor temperature and the constant indoor temperature at the higher evaporating temperature, the double-reservoir arrangement of the air suction side of the compressor avoids the mixed pulsation of different air suction pressures on the air suction side of the compressor of the single-reservoir, the independent suction of different air suction pressures maintains the stability of the air suction side of the compressor, and the reliability of the compressor is ensured.
Examples
The temperature control system based on the capillary network of double-cylinder double-reservoir and the indoor unit comprises an outdoor unit and an indoor unit, the structure of which is shown in fig. 1, wherein the indoor unit comprises an indoor heat exchanger 108 and a throttling device I107, the outdoor unit comprises a double-cylinder compressor 101, a first liquid reservoir 102, a second liquid reservoir 103, a first four-way valve 105, a second four-way valve 104 and an outdoor heat exchanger 106, the system further comprises a capillary network loop, a detection unit, a control unit, a second throttling device 109 and a coupling heat exchanger 110, the control unit is arranged in the indoor unit, the upper end of the double-cylinder compressor 101 is respectively connected with the D end of the first four-way valve 105 and the D end of the second four-way valve 104, the lower end of the double-cylinder compressor 101 is respectively connected with one end of the first liquid reservoir 102 and one end of the second four-way valve 103 through a corresponding cylinder air inlet, the other end of the first liquid reservoir 102 is connected with the S end of the fourth valve 105, the C end of the second four-way valve 104 is respectively connected with one end of the second four-way valve 106 and one end of the second four-way valve 105, the C end of the second four-way valve 104 is respectively connected with one end of the outdoor heat exchanger 106 and one end of the second four-way valve 105, the other end of the fourth valve 104 is respectively connected with the second end of the fourth heat exchanger 106 and the throttling device 107 through the first end of the capillary tube network 106 and the second throttling device 107 and the second end of the first throttling device is respectively connected with the second end of the fourth heat exchanger 110; the control unit is arranged in the indoor unit, and the detection unit is connected with the control unit; the detection unit is used for detecting temperature and humidity information of the indoor air and transmitting the detected temperature and humidity information of the indoor air to the control unit; the control unit is used for selectively starting the air conditioner to enter a corresponding mode according to the difference value between the set indoor temperature and humidity information and the detected indoor temperature and humidity information, so as to control the outdoor unit and/or the indoor unit and/or the capillary network loop to work;
here, the twin-cylinder compressor 101 is combined with two accumulators, and independent suction of the refrigerant in different pressure states can be achieved. When the evaporating/condensing temperatures of the indoor heat exchanger 108 and the coupling heat exchanger 110 are different, for example, the indoor heat exchanger 108 and the coupling heat exchanger 110 are synchronously realized to dehumidify at an evaporating temperature lower than the dew point temperature, the coupling heat exchanger 110 is used to maintain the working state of constant indoor temperature and humidity at a higher evaporating temperature, the dual-reservoir arrangement of the air suction side of the compressor avoids the mixed pulsation of different air suction pressures on the air suction side of the single-reservoir compressor, the independent suction of different air suction pressures maintains the stability of the air suction side of the compressor, and the reliability of the compressor is ensured.
In practical applications, the modes mentioned in this example may include a rapid cooling mode, a rapid heating mode, a dehumidification mode, an individual cooling mode, and an individual heating mode.
When the air conditioner is started to enter a quick refrigeration mode:
the outdoor unit starts to work, refrigerant is discharged from the compressor and then is divided into two paths through a first four-way valve 105 and a second four-way valve 104 respectively, the refrigerant is gathered to an outdoor heat exchanger 106 to be converted into low-temperature refrigerant, the low-temperature refrigerant is divided into two paths, one path of refrigerant passes through a first throttling device 107 and flows into an indoor heat exchanger 108, then high-temperature refrigerant flows back into a first reservoir 102 of the compressor again through the first four-way valve 105, and enters the compressor through a corresponding air inlet to be ready for entering the next working cycle, the air conditioner indoor unit starts a quick refrigeration mode at the moment, the first throttling device 105 is started, and the indoor heat exchanger 108 refrigerates indoor air at a set evaporation temperature;
the other way is to flow the low-temperature refrigerant into the coupling heat exchanger 110 through the throttling device II 109, then flow the high-temperature refrigerant back to the liquid storage device II 103 of the compressor through the four-way valve II 104 again, and flow the refrigerant in the coupling heat exchanger loop to exchange heat with part of the pipe section of the capillary network loop, and start the water pump 111 on the capillary network loop to work, and simultaneously start the three-way valve I112 and the three-way valve II 113 on the capillary network loop to promote the medium flow in the capillary network and accelerate the uniform distribution of the heat of the whole indoor capillary network; the evaporating temperature of the coupling heat exchanger 110 may be different from the evaporating temperature of the indoor heat exchanger 108 as desired;
when the detection unit detects that the indoor temperature reaches the set value or reaches the set value within the set range, the first throttling device 107 is closed, the rapid refrigeration mode of the air conditioner indoor unit is stopped, only the capillary network loop performs radiation heat exchange, the temperature and humidity change rate of the indoor air are detected in real time, and the indoor temperature is maintained within the fluctuation range of the set temperature by adjusting the opening degree of the second throttling device 109 in real time.
When the air conditioner is started to enter a rapid heating mode:
the outdoor unit starts to work, refrigerant is discharged from the compressor and divided into two paths through a first four-way valve 105 and a second four-way valve 104 respectively, the refrigerant is summarized to an outdoor heat exchanger 106 to be subjected to heat conversion and then divided into two paths, one path of refrigerant flows into an indoor heat exchanger 108 through a first throttling device 107, then low-temperature refrigerant flows back to a first liquid reservoir 102 of the compressor through the first four-way valve 105 again, the air conditioner indoor unit starts a rapid heating mode, and the first throttling device 107 is opened;
the other way is that the high-temperature refrigerant flows into the coupling heat exchanger 110 through the second throttling device 109, then the low-temperature refrigerant flows back to the second reservoir 103 of the compressor through the second four-way valve 104 again, the second throttling device 109 is opened, the refrigerant entering the coupling heat exchanger loop exchanges heat with part of the pipe section of the capillary network loop, the first three-way valve 112 and the second three-way valve 113 on the capillary network loop are both started, the water pump 111 is started to work, and the water pump is used for promoting the medium flow in the capillary network and accelerating the uniform distribution of the heat of the whole indoor capillary network; the condensing temperature of the coupling heat exchanger may be different from that of the indoor heat exchanger as required.
When the detection unit detects that the indoor temperature reaches the set value or reaches the set value within the set range, the first throttling device 107 is closed, the rapid refrigeration mode of the air conditioner indoor unit is stopped, only the capillary network loop performs radiation heat exchange, the temperature and humidity change rate of the indoor air are detected in real time, and the indoor temperature is maintained within the fluctuation range of the set temperature by adjusting the opening degree of the second throttling device 109 in real time.
When the air conditioner is started to enter a dehumidification mode:
the outdoor unit starts to work, the first throttling device 107 is opened, the indoor unit starts the dehumidification mode, and at this time, the air conditioner sets different evaporation temperatures for the indoor heat exchanger 108 and the coupling heat exchanger 110, for example: the evaporating temperature of the coupling heat exchanger 110 is 18 ℃, the evaporating temperature of the indoor heat exchanger 108 is 8 ℃, two paths of low-temperature refrigerants are changed into high-temperature refrigerants with different pressures after being subjected to heat exchange by the heat exchangers with different evaporating temperatures, and as the double-cylinder double-reservoir compressor adopts the double reservoirs to realize independent suction, the independent suction of the two high-temperature refrigerants with different pressures can be realized without collision, thereby realizing the low evaporating temperature of the coupling heat exchanger 110 to maintain the refrigerating effect, and simultaneously, the indoor heat exchanger 108 realizes the dehumidifying effect on indoor air in a condensation mode at the ultralow evaporating temperature lower than the dew point temperature.
When the air conditioner is started to enter the independent cooling mode or the independent heating mode:
the outdoor unit starts to work, only the second throttling device 109 is opened, the capillary network loop performs radiation heat exchange, and meanwhile, the temperature change rate of indoor air is detected in real time through the detection unit, the opening degree of the second throttling device 109 is controlled to be adjusted in real time, and the indoor temperature is maintained within the fluctuation range of the set temperature.
In this example, the detection unit is preferably a temperature and humidity sensor, and the temperature control system based on the capillary network of the double-cylinder double-reservoir and the indoor unit in parallel connection in this example may further include an intelligent terminal and a server, where the intelligent terminal and the control unit are both connected with the server; the intelligent terminal is used for setting the home time of the user and indoor temperature and humidity information and transmitting the set home time of the user and indoor temperature and humidity information to the server; the server is used for transmitting the set user home time, indoor temperature and humidity information to the control unit after receiving the information, and simultaneously storing a list; the control unit is used for controlling the indoor unit, the outdoor unit and the capillary network loop to start at the set user home time after receiving the set user home time and the indoor temperature and humidity information, controlling the detection unit to start detecting the temperature and humidity information of the indoor air when the outdoor unit and/or the indoor unit and/or the capillary network loop are started, transmitting the detected temperature and humidity information of the indoor air to the control unit, and selectively starting the air conditioner to enter a corresponding mode according to the difference value between the set temperature and humidity information of the indoor air and the detected temperature and humidity information of the indoor air so as to control the outdoor unit and/or the indoor unit and/or the capillary network loop to work.
For convenience of detection, the detection unit mentioned in this example is preferably a temperature and humidity sensor, and of course, other detection devices and/or detection apparatuses with temperature detection and humidity detection may also be used. In addition, for communication convenience, data rapid transmission is achieved, and the intelligent terminal and the control unit are preferably connected with the server through wifi modules.
Through the parallelly connected temperature control system of this example's capillary network and indoor set based on two reservoirs of double-cylinder, through the double-cylinder compressor 101 that has different working volumes of application, the indoor temperature control system of better cooperation indoor set and capillary network parallelly connected, realize indoor set low evaporation temperature dehumidification through setting up the evaporation temperature that indoor heat exchanger 108 and capillary network coupling heat exchanger 110 are different, capillary network heat transfer circuit high evaporation temperature keeps indoor temperature invariable, when solving among the traditional air conditioning system based on single-cylinder compressor and opening indoor set dehumidification mode, because too low evaporation temperature makes indoor temperature too cold, arouse user's uncomfortable sense, really realize the humiture independent regulation of indoor air, dehumidification does not cool down.
Claims (7)
1. The temperature control system based on the capillary network of the double-cylinder double-reservoir and the indoor unit in parallel comprises an outdoor unit and an indoor unit, wherein the indoor unit comprises an indoor heat exchanger and a throttling device I, the temperature control system is characterized in that the outdoor unit comprises a double-cylinder compressor, a liquid reservoir I, a liquid reservoir II, a four-way valve I, a four-way valve II and an outdoor heat exchanger, the system also comprises a capillary network loop, a detection unit, a control unit, a throttling device II and a coupling heat exchanger,
the control unit is arranged in the indoor unit, the exhaust port of the double-cylinder compressor is respectively connected with the D end of the first four-way valve and the D end of the second four-way valve, the lower end of the double-cylinder compressor is respectively connected with one end of the first liquid storage device and one end of the second liquid storage device through corresponding air inlets of the air cylinders, the other end of the first liquid storage device is connected with the S end of the first four-way valve, the other end of the second liquid storage device is connected with the S end of the second four-way valve, the C end of the second four-way valve is respectively connected with one end of the outdoor heat exchanger and the C end of the first four-way valve, the other end of the outdoor heat exchanger is respectively connected with one end of the first throttling device and one end of the second throttling device, the other end of the first throttling device is connected with the E end of the first four-way valve through the indoor heat exchanger, and the capillary network loop is connected with the coupling heat exchanger;
the control unit is arranged in the indoor unit, and the detection unit is connected with the control unit;
the detection unit is used for detecting temperature and humidity information of indoor air and transmitting the detected temperature and humidity information of the indoor air to the control unit;
the control unit is used for selectively starting the air conditioner to enter a corresponding mode according to the difference value between the set indoor temperature and humidity information and the detected indoor temperature and humidity information, so as to control the outdoor unit and/or the indoor unit and/or the capillary network loop to work; the modes comprise a rapid refrigeration mode, a rapid heating mode, a dehumidification mode, an independent refrigeration mode and an independent heating mode;
the double-cylinder compressor is matched with two liquid reservoirs and is used for realizing independent suction of refrigerants in different pressure states;
when the air conditioner is started to enter a dehumidification mode, the outdoor unit starts to work, the throttling device is started, the indoor unit starts to be in the dehumidification mode, at the moment, the air conditioner sets different evaporation temperatures for the indoor heat exchanger and the coupling heat exchanger respectively, two paths of low-temperature refrigerants are changed into high-temperature refrigerants with different pressures after heat exchange of the heat exchangers with different evaporation temperatures, and as the double-cylinder double-reservoir compressor adopts the double-reservoir to realize independent suction, independent suction of the two high-temperature refrigerants with different pressures can be realized, the two high-temperature refrigerants are not in conflict with each other, so that the lower evaporation temperature of the coupling heat exchanger maintains a refrigeration effect, and meanwhile, the indoor heat exchanger realizes the dehumidification effect on indoor air in a condensation mode at an ultralow evaporation temperature lower than a dew point temperature.
2. The temperature control system based on the capillary network of the double cylinders and the double reservoirs and the parallel connection of the indoor units according to claim 1 is characterized in that when an air conditioner is started to enter a rapid refrigeration mode, an outdoor unit starts to work, after being discharged from a compressor, refrigerants are respectively divided into a first four-way valve and a second four-way valve through the first four-way valve, collected to an outdoor heat exchanger to be subjected to heat conversion into low-temperature refrigerants, and then divided into two ways, one way is used for enabling the low-temperature refrigerants to flow into the indoor heat exchanger through the first throttling device, then enabling the high-temperature refrigerants to flow back into the first reservoir of the compressor through the first four-way valve again, and enter the compressor through a corresponding air inlet to be ready to enter the next working cycle, at this time, the air conditioner indoor unit starts the rapid refrigeration mode, the first throttling device is started, and the indoor heat exchanger is used for refrigerating indoor air at a set evaporation temperature;
the other way is that the low-temperature refrigerant flows into the coupling heat exchanger through the throttling device II, then the high-temperature refrigerant flows back to the liquid storage device II of the compressor through the four-way valve II again, the refrigerant enters the coupling heat exchanger loop to exchange heat with a part of pipe sections of the capillary network loop, and a water pump on the capillary network loop starts to work so as to promote the medium flow in the capillary network and accelerate the uniform distribution of the heat of the whole indoor capillary network; the evaporating temperature of the coupling heat exchanger can be different from the evaporating temperature of the indoor heat exchanger according to the requirement;
when the detection unit detects that the indoor temperature reaches a set value or reaches within a set range of the set value, the first throttling device is closed, the rapid refrigeration mode of the air conditioner indoor unit is stopped, only the capillary network loop performs radiation heat exchange, the temperature and humidity change rate of indoor air are detected in real time, and the indoor temperature is maintained within a fluctuatable range of the set temperature by adjusting the opening degree of the second throttling device in real time.
3. The temperature control system based on the capillary network of the double cylinders and the double reservoirs and connected in parallel with the indoor unit according to claim 1, wherein when the air conditioner is started to enter a rapid heating mode, the outdoor unit starts to work, the refrigerant is discharged from the compressor and then is divided into two paths through a first four-way valve and a second four-way valve respectively, the two paths are collected to the outdoor heat exchanger to be subjected to heat conversion, the high-temperature refrigerant is divided into two paths through a first throttling device and flows into the indoor heat exchanger, then the low-temperature refrigerant flows back to the first reservoir of the compressor again through the first four-way valve, the air conditioner indoor unit starts the rapid heating mode, and the first throttling device is opened;
the other way is that the high-temperature refrigerant flows into the coupling heat exchanger through the second throttling device, then the low-temperature refrigerant flows back to the second liquid storage device of the compressor through the second four-way valve, the second throttling device is opened, the refrigerant entering the coupling heat exchanger loop exchanges heat with part of pipe sections of the capillary network loop, a water pump on the capillary network loop starts to work and is used for promoting medium flow in the capillary network, so that heat of the whole indoor capillary network is uniformly distributed, and the condensation temperature of the coupling heat exchanger is different from that of the indoor heat exchanger according to requirements;
when the detection unit detects that the indoor temperature reaches a set value or reaches within a set range of the set value, the first throttling device is closed, the rapid refrigeration mode of the air conditioner indoor unit is stopped, only the capillary network loop performs radiation heat exchange, the temperature and humidity change rate of indoor air are detected in real time, and the indoor temperature is maintained within a fluctuatable range of the set temperature by adjusting the opening degree of the second throttling device in real time.
4. The temperature control system based on the capillary network of the double cylinders and the double reservoirs and connected in parallel with the indoor unit according to claim 1 is characterized in that when the air conditioner is started to enter an independent refrigerating mode or an independent heating mode, the outdoor unit starts to work, only the second throttling device is started, the capillary network loop performs radiation heat exchange, meanwhile, the temperature change rate of the indoor air is detected in real time through the detection unit, the opening degree of the second throttling device is controlled to be adjusted in real time, and the indoor temperature is maintained within a fluctuation range of the set temperature.
5. The temperature control system based on the capillary network of the double cylinders and the double reservoirs connected in parallel with the indoor unit according to claim 1, wherein the detection unit is a temperature and humidity sensor.
6. The temperature control system based on the capillary network of the double cylinders and the double reservoirs connected in parallel with the indoor unit according to any one of claims 1 to 5, further comprising an intelligent terminal and a server, wherein the intelligent terminal and the control unit are connected with the server;
the intelligent terminal is used for setting the home time of the user and indoor temperature and humidity information and transmitting the set home time of the user and indoor temperature and humidity information to the server;
the server is used for transmitting the set user home time, indoor temperature and humidity information to the control unit after receiving the information, and simultaneously storing a list;
the control unit is used for controlling the indoor unit, the outdoor unit and the capillary network loop to start at the set user home time after receiving the set user home time and the indoor temperature and humidity information, controlling the detection unit to start detecting the temperature and humidity information of the indoor air when the outdoor unit and/or the indoor unit and/or the capillary network loop are started, transmitting the detected temperature and humidity information of the indoor air to the control unit, and selectively starting the air conditioner to enter a corresponding mode according to the difference value between the set temperature and humidity information of the indoor air and the detected temperature and humidity information of the indoor air so as to control the outdoor unit and/or the indoor unit and/or the capillary network loop to work.
7. The temperature control system based on the capillary network of the double cylinders and the double reservoirs and the indoor unit connected in parallel according to claim 6, wherein the intelligent terminal and the control unit are connected with the server through wifi modules.
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| CN110207421A (en) * | 2019-06-25 | 2019-09-06 | 广东美的暖通设备有限公司 | Multi-line system |
| CN110207419B (en) * | 2019-06-25 | 2022-03-29 | 广东美的暖通设备有限公司 | Multi-split system |
| CN110701816A (en) * | 2019-10-11 | 2020-01-17 | 珠海格力电器股份有限公司 | Electric appliance system and control method and control device thereof |
| CN114646096A (en) * | 2022-03-16 | 2022-06-21 | 珠海格力电器股份有限公司 | Indoor unit assembly, air conditioning system and control method of indoor unit assembly |
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