CN111237857A - Air conditioner dehumidification method and system capable of keeping constant temperature - Google Patents
Air conditioner dehumidification method and system capable of keeping constant temperature Download PDFInfo
- Publication number
- CN111237857A CN111237857A CN202010145742.9A CN202010145742A CN111237857A CN 111237857 A CN111237857 A CN 111237857A CN 202010145742 A CN202010145742 A CN 202010145742A CN 111237857 A CN111237857 A CN 111237857A
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- heat exchanger
- systems
- dehumidification
- throttling element
- conversion device
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- 238000007791 dehumidification Methods 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000006243 chemical reaction Methods 0.000 claims abstract description 25
- 238000005057 refrigeration Methods 0.000 claims abstract description 18
- 238000010438 heat treatment Methods 0.000 claims abstract description 10
- 230000008569 process Effects 0.000 claims abstract description 6
- 238000004378 air conditioning Methods 0.000 claims description 17
- 239000003507 refrigerant Substances 0.000 claims description 14
- 238000001816 cooling Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 5
- 230000009467 reduction Effects 0.000 abstract description 5
- 230000008859 change Effects 0.000 abstract description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
Images
Classifications
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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
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located units
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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
- 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
- F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
- F24F1/0063—Indoor units, e.g. fan coil units characterised by heat exchangers by the mounting or arrangement of the heat exchangers
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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
- 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
- F24F1/0083—Indoor units, e.g. fan coil units with dehumidification means
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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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- 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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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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
- F24F11/88—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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/20—Humidity
Abstract
The invention discloses an air conditioner dehumidification method and system capable of keeping constant temperature, wherein a heat exchanger of an indoor unit is divided into two systems; the two systems are connected through a conversion device; when the system is normally heated or cooled, the conversion device is closed, and the two systems are used for a condenser or an evaporator at the same time; when dehumidification is carried out, the conversion device is opened, the two systems are respectively converted into a condenser and an evaporator for use, and at the moment, the heat increased by the condenser part is equal to the heat of the sensible heat part reduced in dehumidification, so that the dehumidification process is kept, and the temperature is unchanged. The invention also can be used as a system to participate in the refrigeration and heating functions of the air conditioner during normal use; under the dehumidification function, a part of heat exchangers are used as evaporators to perform refrigeration and dehumidification functions, and the rest of heat exchangers are used as a part of condensers to participate in heat release together with outdoor condensers to perform heating balance to perform refrigeration sensible heat reduction part of the evaporators; the function of no change of indoor temperature is achieved.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner dehumidification method and system capable of keeping constant temperature.
Background
The existing air conditioning systems all have a dehumidification function, and the dehumidification mode is the same as the refrigeration mode; the difference is that the indoor machine starts a low damper, and the compressor and the indoor fan start for several minutes and stop for several minutes; in this system, dehumidification of the room can be performed, but when cooling the room, latent heat in the room (reduction in humidity) is reduced and sensible heat in the room (reduction in temperature) is also reduced, which causes discomfort.
Based on the above, an air conditioner dehumidification method and system for keeping constant temperature are researched, wherein the evaporator (heat exchanger) of the indoor unit is divided into two systems for balanced heating compensation, so that the temperature balance in the dehumidification process is realized, and the comfort of a user is improved.
Disclosure of Invention
The invention aims to solve the technical problem of providing an air conditioner dehumidification method and system capable of keeping constant temperature.
The invention adopts the following technical scheme to solve the technical problems:
an air conditioner dehumidification method for keeping constant temperature comprises the following steps:
s1, dividing a heat exchanger of the indoor unit into two systems;
s2, the two systems are connected through a conversion device;
s3, when heating or cooling normally, closing the conversion device, and using the two systems for the condenser or the evaporator simultaneously;
and S4, when dehumidification is carried out, the conversion device is turned on, the two systems are respectively converted into a condenser and an evaporator for use, and the heat quantity of the condenser part is equal to the heat quantity of the sensible heat part with reduced dehumidification, so that the dehumidification process is kept and the temperature is unchanged.
In a preferred embodiment of the present invention, the switching device includes a solenoid valve and a throttle element, and the solenoid valve and the throttle element are directly connected in parallel with each other between the two systems.
In a preferred embodiment of the present invention, the throttle element is an electronic expansion valve or a capillary tube.
As one of the preferable modes of the invention, when the electromagnetic valve is opened, the refrigerant passes through the electromagnetic valve, and the throttling element does not work; when the electromagnetic valve is closed, the refrigerant circulates from the throttling element, so that the area of the indoor unit heat exchanger is reduced, and the rest part is used as the part of the outdoor heat exchanger.
The invention also discloses an air-conditioning dehumidification system capable of keeping constant temperature, which comprises a compressor, an indoor unit heat exchanger, an outdoor unit heat exchanger, a conversion device and a first throttling element, wherein the compressor is connected with the indoor unit heat exchanger; the compressor, the indoor machine heat exchanger, the first throttling element and the outdoor machine heat exchanger are sequentially communicated to form an air-conditioning refrigeration system, wherein the indoor machine heat exchanger is divided into two systems which are directly communicated through a conversion device; when the conversion device is closed, the two systems of the indoor heat exchanger are integrally used as evaporators, and when the conversion device is opened, the two systems of the indoor heat exchanger are respectively used as an evaporator and a condenser.
In a preferred embodiment of the present invention, the switching device includes a solenoid valve and a second throttling element, and the solenoid valve and the second throttling element are directly connected in parallel with each other between the two systems.
In a preferred embodiment of the present invention, the first and second throttling elements are both electronic expansion valves or capillary tubes.
As one of preferable modes of the present invention, when the solenoid valve is opened, the refrigerant passes through the solenoid valve, and the second throttling element does not function; when the electromagnetic valve is closed, the refrigerant circulates from the second throttling element, so that the refrigerating effect of the heat exchanger of the indoor unit is reduced.
Compared with the prior art, the invention has the advantages that: the invention uses the existing air-conditioning system to divide the evaporator of the indoor machine (heat exchanger) into two systems, and the two systems are also used as one system to participate in the refrigeration and heating functions of the air conditioner during normal use; under the dehumidification function, a part of heat exchangers are used as evaporators to perform refrigeration and dehumidification functions, and the rest of heat exchangers are used as a part of condensers to participate in heat release together with outdoor condensers to perform heating balance to perform refrigeration sensible heat reduction part of the evaporators; the function of no change of indoor temperature is achieved.
Drawings
Fig. 1 is a schematic structural view of an air conditioning and dehumidifying system (refrigeration system) for maintaining a constant temperature in an embodiment;
FIG. 2 is a schematic diagram of a system flow direction structure in a cooling mode of an air conditioning and dehumidifying system for maintaining a constant temperature in an embodiment;
fig. 3 is a schematic diagram of a system flow structure in a dehumidification mode of an air conditioning dehumidification system for maintaining a constant temperature in an embodiment.
In the figure, 1 is an indoor unit heat exchanger; 2, an evaporator I of the indoor unit heat exchanger; a second heat exchanger of the indoor unit is 3; 4 is a second throttling element; 5 is an electromagnetic valve (normally open type); 6 is a first throttling element; 7 is an outdoor heat exchanger (condenser); and 8 is a compressor.
Detailed Description
The following examples are given for the detailed implementation and specific operation of the present invention, but the scope of the present invention is not limited to the following examples.
Example 1
The air conditioner dehumidification method for keeping constant temperature comprises the following steps:
s1, dividing a heat exchanger of the indoor unit into two systems;
s2, the two systems are connected through a conversion device;
s3, when heating or cooling normally, closing the conversion device, and using the two systems for the condenser or the evaporator simultaneously;
and S4, when dehumidification is carried out, the conversion device is turned on, the two systems are respectively converted into a condenser and an evaporator for use, and the heat quantity of the condenser part is equal to the heat quantity of the sensible heat part with reduced dehumidification, so that the dehumidification process is kept and the temperature is unchanged.
It should be noted that, when the air conditioner is refrigerating, the heat exchanger of the indoor unit is an evaporator; when the air conditioner heats, the heat exchanger of the indoor unit is a condenser. In addition, in the embodiment, when dehumidification is performed, the refrigeration process of the air conditioner is continuously performed, and dehumidification reduces a part of temperature, so that a part of refrigeration effect of the heat exchanger of the indoor unit is eliminated through the conversion device to achieve dynamic balance and keep the temperature unchanged.
In the embodiment, the existing air conditioning system is utilized, the heat exchanger of the indoor unit is divided into two systems, and the two systems are used as one system to participate in the refrigeration and heating functions of the air conditioner during normal use; under the dehumidification function, a part of heat exchangers are used as evaporators to perform refrigeration and dehumidification functions, and the rest of heat exchangers are used as a part of condensers to participate in heat release together with outdoor condensers to perform heating balance to perform refrigeration sensible heat reduction part of the evaporators; the function of no change of indoor temperature is achieved.
Specifically, the switching device comprises a solenoid valve and a throttling element, and the solenoid valve and the throttling element are directly connected between the two systems in parallel.
Preferably, the throttling element is an electronic expansion valve or a capillary tube.
When the electromagnetic valve is opened, the refrigerant passes through the electromagnetic valve, and the throttling element does not work; when the electromagnetic valve is closed, the refrigerant circulates from the throttling element, so that the refrigerating area of the indoor unit heat exchanger is reduced, and the rest part is used as the part of the outdoor heat exchanger.
Example 2
Referring to FIGS. 1-3: the embodiment also discloses an air-conditioning dehumidification system capable of keeping constant temperature, which comprises a compressor 8, an indoor unit heat exchanger 1, an outdoor unit heat exchanger 7, a conversion device and a first throttling element 6; the compressor 8, the indoor unit heat exchanger 1, the first throttling element 6 and the outdoor unit heat exchanger 7 are sequentially communicated to form an air-conditioning refrigeration system, wherein the indoor unit heat exchanger 1 is divided into two systems which are directly communicated through a conversion device; when the conversion device is closed, the two systems of the indoor heat exchanger are integrally used as evaporators, and when the conversion device is opened, the two systems of the indoor heat exchanger are respectively used as a first evaporator 2 and a second indoor heat exchanger 3 (a condenser at this time) of the indoor heat exchanger.
It should be noted that, when the switching device of the system of this embodiment is turned on, the two systems of the indoor unit heat exchanger are respectively used as the evaporator and the condenser, so that a part of the refrigeration effect of the indoor unit heat exchanger is eliminated to achieve dynamic balance and keep the temperature unchanged.
Specifically, the switching device includes a solenoid valve 5 (normally open type) and a second throttling element 4, and the solenoid valve 5 and the second throttling element 4 are directly connected in parallel with each other between the two systems.
Preferably, the first throttling element 6 and the second throttling element 4 are both electronic expansion valves or capillary tubes.
It should be noted that when the solenoid valve 5 is opened, the refrigerant passes through the solenoid valve 5, and the second throttling element 4 is not activated; when the solenoid valve 5 is closed, the refrigerant circulates from the second throttling element 4, thereby reducing the cooling effect of the indoor unit heat exchanger 1.
The working principle of the invention is as follows:
referring to fig. 2: when the refrigeration mode is started: the electromagnetic valve 5 is in a passage state, refrigerant flows through the electromagnetic valve 5, and the second throttling element 4 does not work, so that the first evaporator 2 and the second indoor heat exchanger 3 (the evaporator at this time) of the indoor heat exchanger are used as an evaporator as a whole;
referring to fig. 3: when the dehumidification mode is started: the electromagnetic valve 5 is in a closed state, the refrigerant flows through the second throttling element 4, at the moment, the second indoor heat exchanger 3 is a high-pressure part, the first evaporator 2 of the indoor heat exchanger is a low-pressure part, so that the first evaporator 2 of the indoor heat exchanger is an evaporator heat absorption part, the second indoor heat exchanger 3 is a condensation heat generation part, and the second throttling element 4 is adjusted, so that the second indoor heat exchanger 3 (condenser) can balance a sensible heat part absorbed by the first evaporator 2 of the indoor heat exchanger of the heat absorption part, the indoor temperature is unchanged, and the indoor constant temperature effect is achieved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. An air conditioner dehumidification method capable of keeping constant temperature is characterized by comprising the following steps:
s1, dividing a heat exchanger of the indoor unit into two systems;
s2, the two systems are connected through a conversion device;
s3, when heating or cooling normally, closing the conversion device, and using the two systems for the condenser or the evaporator simultaneously;
and S4, when dehumidification is carried out, the conversion device is turned on, the two systems are respectively converted into a condenser and an evaporator for use, and the heat quantity of the condenser part is equal to the heat quantity of the sensible heat part with reduced dehumidification, so that the dehumidification process is kept and the temperature is unchanged.
2. An air conditioning dehumidification method for maintaining constant temperature according to claim 1, wherein said switching means comprises a solenoid valve and a throttling element, said solenoid valve and said throttling element being connected directly in parallel with each other between said two systems.
3. An air conditioning dehumidification method for maintaining constant temperature as recited in claim 2 wherein said throttling element is an electronic expansion valve or a capillary tube.
4. An air conditioning dehumidification method for maintaining constant temperature as recited in claim 2 wherein when the solenoid valve is opened, refrigerant passes through the solenoid valve and the throttling element is deactivated; when the electromagnetic valve is closed, the refrigerant circulates from the throttling element, so that the refrigerating area of the indoor unit heat exchanger is reduced, and the rest part is used as the part of the outdoor heat exchanger.
5. An air conditioner dehumidification system keeping constant temperature is characterized by comprising a compressor, an indoor unit heat exchanger, an outdoor unit heat exchanger, a conversion device and a first throttling element; the compressor, the indoor machine heat exchanger, the first throttling element and the outdoor machine heat exchanger are sequentially communicated to form an air-conditioning refrigeration system, wherein the indoor machine heat exchanger is divided into two systems which are directly communicated through a conversion device; when the conversion device is closed, the two systems of the indoor heat exchanger are integrally used as evaporators, and when the conversion device is opened, the two systems of the indoor heat exchanger are respectively used as an evaporator and a condenser.
6. An air conditioning and dehumidifying system as claimed in claim 5, wherein the switching means comprises a solenoid valve and a second throttling element, and the solenoid valve and the second throttling element are directly connected in parallel with each other between the two systems.
7. An air conditioning dehumidification system capable of maintaining constant temperature as claimed in any one of claims 5 to 6, wherein said first throttling element and said second throttling element are electronic expansion valves or capillary tubes.
8. An air conditioning dehumidification system as set forth in claim 6 wherein when the solenoid valve is open, refrigerant passes from the solenoid valve and the second throttling element is inactive; when the electromagnetic valve is closed, the refrigerant circulates from the second throttling element, so that the refrigerating effect of the heat exchanger of the indoor unit is reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010145742.9A CN111237857A (en) | 2020-03-05 | 2020-03-05 | Air conditioner dehumidification method and system capable of keeping constant temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010145742.9A CN111237857A (en) | 2020-03-05 | 2020-03-05 | Air conditioner dehumidification method and system capable of keeping constant temperature |
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| Publication Number | Publication Date |
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| CN111237857A true CN111237857A (en) | 2020-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010145742.9A Pending CN111237857A (en) | 2020-03-05 | 2020-03-05 | Air conditioner dehumidification method and system capable of keeping constant temperature |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111811035A (en) * | 2020-07-22 | 2020-10-23 | 南京天加环境科技有限公司 | Dehumidification and reheating unit type air conditioning system and control method thereof |
| CN112524729A (en) * | 2020-12-22 | 2021-03-19 | 重庆大学 | Air treatment regulation and control method capable of achieving constant-temperature dehumidification |
| CN114719351A (en) * | 2022-04-08 | 2022-07-08 | 珠海市金品创业共享平台科技有限公司 | Heat pump type three-tube air conditioning system |
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| CN101008514A (en) * | 2006-01-25 | 2007-08-01 | 海尔集团公司 | Refrigeration air-conditioner with multiple dehumidification mode |
| CN200965364Y (en) * | 2006-09-30 | 2007-10-24 | 四川长虹电器股份有限公司 | Constant temperature and dehumidification split-type heat pump air conditioning unit |
| CN102620361A (en) * | 2012-02-23 | 2012-08-01 | 宁波奥克斯空调有限公司 | Heat pump air conditioner with dehumidifying function and control method thereof |
| KR101206278B1 (en) * | 2012-07-30 | 2012-11-29 | 주)에어솔루션스 | Apparatus for Constant Temperature and Humidity System Using Heat Pump And Control Method Thereof |
| CN211781449U (en) * | 2020-03-05 | 2020-10-27 | 中国扬子集团滁州扬子空调器有限公司 | Air conditioner dehumidification system capable of keeping constant temperature |
-
2020
- 2020-03-05 CN CN202010145742.9A patent/CN111237857A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101008514A (en) * | 2006-01-25 | 2007-08-01 | 海尔集团公司 | Refrigeration air-conditioner with multiple dehumidification mode |
| CN200965364Y (en) * | 2006-09-30 | 2007-10-24 | 四川长虹电器股份有限公司 | Constant temperature and dehumidification split-type heat pump air conditioning unit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111811035A (en) * | 2020-07-22 | 2020-10-23 | 南京天加环境科技有限公司 | Dehumidification and reheating unit type air conditioning system and control method thereof |
| CN112524729A (en) * | 2020-12-22 | 2021-03-19 | 重庆大学 | Air treatment regulation and control method capable of achieving constant-temperature dehumidification |
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