CN113865028A - Air conditioning system - Google Patents
Air conditioning system Download PDFInfo
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- CN113865028A CN113865028A CN202111160405.8A CN202111160405A CN113865028A CN 113865028 A CN113865028 A CN 113865028A CN 202111160405 A CN202111160405 A CN 202111160405A CN 113865028 A CN113865028 A CN 113865028A
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 34
- 238000007791 dehumidification Methods 0.000 claims abstract description 59
- 238000001816 cooling Methods 0.000 claims abstract description 40
- 238000005057 refrigeration Methods 0.000 claims abstract description 23
- 238000001514 detection method Methods 0.000 claims abstract description 20
- 239000003507 refrigerant Substances 0.000 claims description 29
- 230000000694 effects Effects 0.000 description 10
- 238000010438 heat treatment Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- F24F11/54—Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
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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
- F24F11/70—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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/20—Humidity
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention relates to an air conditioning system, which comprises an indoor unit, an outdoor unit, a signal receiving module, a temperature detection module, a humidity detection module and a control module, wherein the outdoor unit comprises: the system comprises a compressor, an outdoor heat exchanger, an outdoor fan and an outdoor throttling element; the indoor unit includes: the indoor heat exchanger comprises a first indoor heat exchanger, a second indoor heat exchanger, an indoor fan and an indoor throttling element; the signal receiving module is used for receiving a comfortable mode signal, a humidity setting signal Hs and a temperature setting signal Ts; the temperature detection module is used for detecting an indoor temperature signal Ti; the humidity detection module is used for detecting an indoor humidity signal Hi; the control module is used for switching between a refrigeration mode and a non-cooling dehumidification mode according to the temperature and humidity conditions after receiving the comfortable mode signal. The invention enters the non-cooling dehumidification mode when the indoor temperature is proper and the humidity is high, and directly enters the refrigeration mode when the indoor environment temperature is high, thereby reducing the indoor environment temperature, realizing dehumidification and improving the comfort.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioning system capable of realizing non-cooling dehumidification.
Background
Dehumidification is one of the main functions of an air conditioning system, and in order to ensure a certain relative humidity in a room, redundant water vapor in air needs to be removed, so that the dehumidification effect is achieved.
In the related art, an air conditioning system includes: the evaporator, the condenser, throttling element and compressor, the compressor is high temperature high pressure refrigerant gas with low temperature low pressure refrigerant gas compression, then form normal atmospheric temperature high pressure refrigerant liquid after passing through the condenser condensation with high temperature high pressure refrigerant gas, then form low temperature low pressure refrigerant liquid through throttling element's throttle effect, low temperature low pressure refrigerant liquid becomes low temperature low pressure refrigerant gas after the evaporimeter, carry out the heat exchange with indoor high temperature air simultaneously, realize the refrigeration, and the vapor in the indoor environment meets cold liquefaction for the drop of water this moment, flow out from the outlet of evaporimeter, thereby realize the dehumidification.
In the implementation process, the air conditioning system realizes dehumidification at the same time of refrigeration. And under some environment, for example under rainy season in the south and the weather in the south of China, the ambient temperature is relatively low but the ambient humidity is relatively high, and at this moment, the user is stronger in demand for dehumidification, so only dehumidification is needed and temperature reduction is not needed, but the indoor temperature is also reduced when dehumidification is carried out by the implementation mode, so that the dehumidification is not suitable for the environment which only needs dehumidification and does not need temperature reduction.
Disclosure of Invention
The invention provides an air conditioning system, which solves the technical problem that the temperature reduction cannot meet the requirement that only dehumidification is carried out and cooling is not needed when an air conditioner dehumidifies in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
1. an air conditioning system comprising an indoor unit and an outdoor unit, wherein the outdoor unit comprises: the system comprises a compressor, an outdoor heat exchanger, an outdoor fan and an outdoor throttling element; the indoor unit includes: the indoor heat exchanger comprises a first indoor heat exchanger, a second indoor heat exchanger, an indoor fan and an indoor throttling element; the outdoor heat exchanger, the outdoor throttling element, the first indoor heat exchanger, the indoor throttling element and the second indoor heat exchanger are sequentially connected between the exhaust port and the return air port of the compressor; the air conditioning system further includes:
the signal receiving module is used for receiving a comfortable mode signal, a humidity setting signal Hs and a temperature setting signal Ts;
the temperature detection module is used for detecting an indoor temperature signal Ti;
the humidity detection module is used for detecting an indoor humidity signal Hi;
the control module is used for entering a refrigeration mode when Ti is more than Ts + t1 after receiving the comfortable mode signal; when Ts-t2 is not less than or equal to Ti and not more than Ts + t1 and Hi is not less than Hs + h1, entering a non-cooling dehumidification mode;
the control module is used for controlling the starting of a compressor of the air conditioning system when entering a non-cooling dehumidification mode, the flow direction of a refrigerant is the outdoor heat exchanger, the outdoor throttling element, the first indoor heat exchanger, the indoor throttling element and the second indoor heat exchanger, the indoor throttling element is used for throttling, and the indoor fan and the outdoor fan run;
and the control module is used for controlling the indoor throttling element not to throttle when entering a refrigeration mode.
Compared with the prior art, the technical scheme of the invention has the following technical effects: the air conditioning system comprises an indoor unit, an outdoor unit, a signal receiving module, a temperature detection module, a humidity detection module and a control module, wherein the outdoor unit comprises: the system comprises a compressor, an outdoor heat exchanger, an outdoor fan and an outdoor throttling element; the indoor unit includes: the indoor heat exchanger comprises a first indoor heat exchanger, a second indoor heat exchanger, an indoor fan and an indoor throttling element; an outdoor heat exchanger, an outdoor throttling element, a first indoor heat exchanger, an indoor throttling element and a second indoor heat exchanger are sequentially connected between an exhaust port and a return air port of the compressor; the signal receiving module is used for receiving a comfortable mode signal, a humidity setting signal Hs and a temperature setting signal Ts; the temperature detection module is used for detecting an indoor temperature signal Ti; the humidity detection module is used for detecting an indoor humidity signal Hi; the control module is used for entering a refrigeration mode when Ti is more than Ts + t1 after receiving the comfortable mode signal; when Ts-t2 is not less than or equal to Ti and not more than Ts + t1 and Hi is not less than Hs + h1, entering a non-cooling dehumidification mode; the control module is used for controlling the starting of a compressor of the air conditioning system when entering a non-cooling dehumidification mode, the flow direction of a refrigerant is an outdoor heat exchanger, an outdoor throttling element, a first indoor heat exchanger, an indoor throttling element, a second indoor heat exchanger, the throttling of the indoor throttling element, and the operation of an indoor fan and an outdoor fan; and the control module is used for controlling the indoor throttling element not to throttle when entering the refrigeration mode. According to the first indoor heat exchanger and the second indoor heat exchanger, the heating effect and the dehumidification effect can be achieved respectively, and the indoor environment temperature is not reduced while dehumidification is achieved. Get into not cooling dehumidification mode when indoor temperature is suitable and humidity is great, when indoor ambient temperature is higher, directly get into the refrigeration mode, reduce indoor ambient temperature on the one hand, on the other hand realizes the dehumidification, improves the travelling comfort simultaneously.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a system diagram of an air conditioning system according to an embodiment of the present invention.
Fig. 2 is a composition diagram of an indoor heat exchanger according to an embodiment of the present invention.
Fig. 3 and 4 are schematic position diagrams of indoor heat exchangers according to other embodiments of the present invention.
Fig. 5 is a functional block diagram of an embodiment of the present invention.
Fig. 6 is a control flowchart of an air conditioning system according to an embodiment of the present invention.
In the figure, 1, a compressor; 2. a four-way valve; 3. an outdoor heat exchanger; 4. an outdoor fan; 5. an outdoor throttling element; 6. a first indoor heat exchanger; 7. a second indoor heat exchanger; 8. an indoor heat exchanger; 9. an electromagnetic valve; 10. A capillary tube; 11. an indoor throttling element; 12. an indoor temperature sensor; 13. an indoor humidity sensor; 14. an indoor fan.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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 present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
As shown in fig. 1, an air conditioning system includes an indoor unit, an outdoor unit, and a control module.
The outdoor unit includes: the air conditioner comprises a compressor 1, a four-way valve 2, an outdoor heat exchanger 3, an outdoor fan 4 and an outdoor throttling element 5.
The indoor unit includes: indoor heat exchanger 8, indoor fan 14 and indoor throttling element 11. Wherein the indoor heat exchanger 8 is divided into a first indoor heat exchanger 6 and a second indoor heat exchanger 7.
The indoor restriction element 11 of the present embodiment includes the solenoid valve 9 and the capillary tube 10 connected in parallel. The control module controls the state of the indoor throttling element 11 by controlling the opening and closing of the electromagnetic valve 9, when the electromagnetic valve 9 is opened, the indoor throttling element 11 has no throttling function, and when the electromagnetic valve 9 is closed, the indoor throttling element 11 has the throttling function. When the air conditioning system is used for refrigerating and heating, the electromagnetic valve 9 is opened, the refrigerant passes through the electromagnetic valve 9, the indoor throttling element 11 does not have a throttling function, the electromagnetic valve 9 is closed when the temperature is not reduced and the humidity is removed, the refrigerant passes through the capillary tube 10, and the indoor throttling element 11 has a throttling function.
Of course, the indoor throttling element 11 may also include a dehumidification solenoid valve or an electronic expansion valve or a parallel solenoid valve and a capillary tube.
When the indoor throttling element 11 is a dehumidification electromagnetic valve, the dehumidification electromagnetic valve is a normally open valve, and the valve core is provided with small holes or grooves, so that the valve core can be kept in an open valve state during refrigeration and heating of the air conditioning system, and closed throttling can be performed when temperature reduction and dehumidification are not performed.
When the indoor throttling element 11 is an electronic expansion valve, the electronic expansion valve keeps the maximum opening degree when the air conditioning system is refrigerating and heating, and keeps the small opening degree for throttling when the air conditioning system is not cooling and dehumidifying, and the opening degree can be changed according to the temperature of a refrigerant behind the expansion valve so as to achieve the optimal dehumidifying effect.
The indoor unit further comprises a temperature detection module and a humidity detection module, wherein the temperature detection module and the humidity detection module detect indoor environment temperature, the temperature detection module comprises an indoor temperature sensor 12, and the humidity detection module comprises an indoor humidity sensor 13.
The four-way valve 2, the outdoor heat exchanger 3, the outdoor throttling element 5, the first indoor heat exchanger 6, the indoor throttling element 11 and the second indoor heat exchanger 7 are sequentially connected between an exhaust port and a return air port of the compressor 1, and the control module is used for controlling the state of the indoor throttling element 11. Specifically, the control module of the present embodiment controls the opening and closing of the solenoid valve 9.
Wherein, the heat exchange area of the first indoor heat exchanger 6 is larger than or equal to the heat exchange area of the second heat exchanger 7. So as to reach the effect of heating through first indoor heat exchanger 6, reach dehumidification effect through second heat exchanger 7, the heat that first indoor heat exchanger 6 produced offsets part cold volume or whole cold volume that second heat exchanger 7 produced, guarantees that indoor temperature does not reduce.
Preferably, the ratio of the heat exchange area of the first indoor heat exchanger 6 to the heat exchange area of the second indoor heat exchanger 7 is between 1:1 and 3: 1. In the area proportion range, the heat generated by the first indoor heat exchanger 6 can be further ensured to basically offset the cold energy generated by the second heat exchanger 7, and the indoor temperature is ensured not to be reduced.
Further, the ratio of the heat exchange area of the first indoor heat exchanger 6 to the heat exchange area of the second indoor heat exchanger 7 is 2: 1. In the area proportion, the offset maximization of the heat quantity generated by the first indoor heat exchanger 6 and the cold quantity generated by the second heat exchanger 7 can be further ensured, and the indoor temperature is not reduced.
When the indoor heat exchangers 8 are arranged in multiple rows, the area of each indoor heat exchanger 8 is the sum of the areas of the rows.
Wherein, the first indoor heat exchanger 6 is positioned above the second indoor heat exchanger 7 so as to be beneficial to the second indoor heat exchanger 7 to collect condensed water.
Preferably, as shown in fig. 1, the first indoor heat exchanger 6 and the second indoor heat exchanger 7 are V-shaped and located in the indoor unit, and the side of the V-shaped opening is the windward side.
Because each indoor heat exchanger generally has a plurality of refrigerant flow paths, in order to ensure the capacity of the heat exchanger, two indoor heat exchangers respectively comprise a set of shunting parts, each set of shunting parts consists of a shunt and a shunting capillary tube, and the temperature of the refrigerant flowing out of the heat exchanger is ensured to be the same by adjusting the inner diameter and the length of the shunting capillary tube, as shown in fig. 2. The throttling component is formed by connecting an electromagnetic valve and a capillary in parallel and is positioned between the indoor two parts of heat exchangers. The indoor unit includes a temperature sensor and a humidity sensor for detecting the temperature and humidity of the indoor space.
As shown in fig. 3, the first indoor heat exchanger 6 and the second indoor heat exchanger 7 are arranged in parallel, and the relative positions of the first indoor heat exchanger 6 and the second indoor heat exchanger 7 are vertically arranged, so that the performance of the mode cannot achieve the effect that the V-shaped side is the windward side.
Of course, in some other embodiments, as shown in fig. 4, the first indoor heat exchanger 6 and the second indoor heat exchanger 7 are V-shaped, and the opening side of the V-shape is the leeward side. Of course, the performance of this method cannot achieve the effect of V-shape with the open side facing the wind.
As shown in fig. 5, the air conditioning system further includes:
and the signal receiving module is used for receiving the comfortable mode signal, the humidity setting signal Hs and the temperature setting signal Ts.
And the temperature detection module is used for detecting an indoor temperature signal Ti and comprises a temperature sensor.
And the humidity detection module is used for detecting an indoor humidity signal Hi and comprises a humidity sensor.
The control module is used for entering a refrigeration mode when Ti is more than Ts + t1 after receiving the comfortable mode signal; and when Ts-t2 is not less than or equal to Ti and not more than Ts + t1 and Hi is not less than Hs + h1, entering a non-cooling dehumidification mode.
The control module is used for controlling the starting of a compressor of the air conditioning system when entering a non-cooling dehumidification mode, the flow direction of a refrigerant is an outdoor heat exchanger, an outdoor throttling element, a first indoor heat exchanger, an indoor throttling element, a second indoor heat exchanger, the throttling of the indoor throttling element, and the operation of an indoor fan and an outdoor fan;
and the control module is used for controlling the indoor throttling element not to throttle when entering the refrigeration mode.
The control module is used for entering a cooling-free dehumidification mode and then entering a refrigeration mode when Ti is more than Ts + t 4; when Ti is less than Ts-t3, the cooling-free dehumidification mode is exited; and when Hi is less than Hs-h2, the non-cooling dehumidification mode is exited.
The control module is used for entering the non-cooling dehumidification mode again when Ti is more than or equal to Ts + t5 and Hi is more than or equal to Hs + h1 after the non-cooling dehumidification mode exits when Ti is less than Ts-t 3.
The control module is used for entering the non-cooling dehumidification mode again when Hi is more than or equal to Hs + h1 after Hi-Hs-h 2 exits the non-cooling mode.
The control module is used for controlling the rotating speed of the outdoor fan to be reduced to a rotating speed set value when the air conditioner enters a non-cooling dehumidification mode, controlling the opening of the outdoor throttling element to be an opening set value, and then adjusting the opening according to the target exhaust superheat degree or the target suction superheat degree of the air conditioner system.
In this embodiment, the user has at least three optional functions: heating function, refrigerating function and comfortable function.
The cooling function is divided into a cooling mode and a reheating dehumidification mode (non-cooling dehumidification mode), and the cooling mode in the cooling function is the same as an independent cooling function control method. In the cooling function and the heating function, a user can set a target temperature Ts, and then the system controls corresponding components according to the Ts. As shown in fig. 6, in the comfort function, the user can set a target temperature Ts and humidity Hs, while the system detects the current indoor ambient temperature Ti and humidity Hi. If Ti is more than Ts + t1, entering a refrigeration mode; if Ts-t2 is not less than or equal to Ti and not more than Ts + t1 and Hi is not less than Hs + h1, entering a non-cooling dehumidification mode; if Ts-t2 is not more than Ti not more than Ts + t1 but Hi < Hs + h1, no mode is entered. In the non-cooling dehumidification mode, if phi Ti is more than Ts + t4, entering a refrigeration mode; if Ti is less than Ts-t3, exiting the non-cooling dehumidification mode, continuously judging the indoor temperature and humidity after exiting, and if Ti is more than or equal to Ts + t5 and Hi is more than or equal to Hs + h1, entering the non-cooling dehumidification mode again; and thirdly, if Hi is less than Hs-h2, exiting the non-cooling dehumidification mode, continuously detecting the indoor humidity after exiting, and if Hi is more than or equal to Hs + h1, entering the non-cooling dehumidification mode again. Wherein, t1, t2, t3, t4, t5, h1 and h2 can be 0 or other positive values, such as t1=3 ℃, t2=2 ℃, t3=3 ℃, t4=3 ℃, t5=2 ℃, h1=15% and h2= 5%.
The comfortable mode of this embodiment includes the refrigeration mode and does not lower the temperature dehumidification mode, gets into when indoor temperature suits and humidity is great and does not lower the temperature dehumidification mode, when indoor ambient temperature is higher, directly gets into the refrigeration mode, reduces indoor ambient temperature on the one hand, and on the other hand realizes the dehumidification, improves the travelling comfort simultaneously. Through the refrigeration mode of comfortable mode and the settlement of not cooling dehumidification mode switch condition, assurance indoor environment temperature and humidity that can be better, reach the operation in-process of setting for humidity at indoor environment humidity, the at utmost guarantees that indoor environment temperature does not reduce, when indoor environment temperature is higher, reduces indoor environment temperature fast and realizes the dehumidification through the refrigeration.
When the air conditioning system operates in a refrigeration mode, refrigerant flows out of the compressor, then flows through the outdoor heat exchanger, is condensed and releases heat under the action of the outdoor fan, and flows into the indoor unit after being throttled by the outdoor electronic expansion valve. At the moment, the electromagnetic valve of the indoor throttling element is opened, the refrigerant flows through the electromagnetic valve, the two indoor heat exchangers are evaporators, and the refrigerant evaporates and absorbs heat in the evaporators, so that the cooling and dehumidifying functions of indoor air are realized. After the refrigerant flows out of the indoor unit, the refrigerant flows back into the compressor of the outdoor unit through a pipeline to complete the refrigeration cycle.
When the air conditioning system operates in a heating mode, refrigerant flows through the indoor heat exchangers after flowing out of the compressor, at the moment, the electromagnetic valve of the indoor throttling element is opened, the refrigerant flows through the electromagnetic valve, the two indoor heat exchangers are condensers, the refrigerant is condensed in the condensers to release heat, and the heating process of indoor air is achieved. After the refrigerant flows out of the indoor unit, the refrigerant is throttled by an outdoor electronic expansion valve, enters an outdoor heat exchanger to evaporate and absorb heat, and finally flows back to the compressor.
When the cooling and dehumidifying mode is not performed, the refrigerant flows to the same direction as the refrigerating mode, flows out of the compressor and then passes through the outdoor heat exchanger, the rotating speed of an outdoor fan is reduced, the electronic expansion valve of the outdoor unit is opened to a larger opening degree, the refrigerant still has higher temperature and pressure after flowing into the first indoor heat exchanger, and the first indoor heat exchanger is a condenser; and closing the electromagnetic valve of the throttling component, throttling the refrigerant by the capillary tube, and then flowing into the second indoor heat exchanger, wherein the second indoor heat exchanger is an evaporator. One part of the indoor air is heated by the indoor condenser, and the other part of the indoor air is cooled and dehumidified by the indoor evaporator, so that the aim of cooling and dehumidifying is fulfilled.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. An air conditioning system comprising an indoor unit and an outdoor unit, wherein the outdoor unit comprises: the system comprises a compressor, an outdoor heat exchanger, an outdoor fan and an outdoor throttling element; the indoor unit includes: the indoor heat exchanger comprises a first indoor heat exchanger, a second indoor heat exchanger, an indoor fan and an indoor throttling element; the outdoor heat exchanger, the outdoor throttling element, the first indoor heat exchanger, the indoor throttling element and the second indoor heat exchanger are sequentially connected between the exhaust port and the return air port of the compressor; the air conditioning system further includes:
the signal receiving module is used for receiving a comfortable mode signal, a humidity setting signal Hs and a temperature setting signal Ts;
the temperature detection module is used for detecting an indoor temperature signal Ti;
the humidity detection module is used for detecting an indoor humidity signal Hi;
the control module is used for entering a refrigeration mode when Ti is more than Ts + t1 after receiving the comfortable mode signal; when Ts-t2 is not less than or equal to Ti and not more than Ts + t1 and Hi is not less than Hs + h1, entering a non-cooling dehumidification mode;
the control module is used for controlling the starting of a compressor of the air conditioning system when entering a non-cooling dehumidification mode, the flow direction of a refrigerant is the outdoor heat exchanger, the outdoor throttling element, the first indoor heat exchanger, the indoor throttling element and the second indoor heat exchanger, the indoor throttling element is used for throttling, and the indoor fan and the outdoor fan run;
and the control module is used for controlling the indoor throttling element not to throttle when entering a refrigeration mode.
2. The air conditioning system of claim 1, wherein the control module is configured to enter a cooling mode when Ti > Ts + t4 after entering the non-cooling dehumidification mode; when Ti is less than Ts-t3, the cooling-free dehumidification mode is exited; and when Hi is less than Hs-h2, the non-cooling dehumidification mode is exited.
3. The system of claim 2, wherein the control module is configured to re-enter the desuperheating dehumidification mode when Ti ≧ Ts + t5 and Hi ≧ Hs + h1 after Ti < Ts-t3 exits the desuperheating dehumidification mode.
4. The system of claim 2, wherein the control module is configured to reenter the desuperheating dehumidification mode when Hi ≧ Hs + h1 after Hi < Hs-h2 exits the desuperheating mode.
5. The system of claim 1, wherein the control module is configured to control the speed of the outdoor fan to decrease to a speed set point, control the opening of the outdoor throttling element to an opening set point, and then perform opening adjustment based on a target discharge superheat or a target suction superheat of the air conditioning system when entering the no-cool dehumidification mode.
6. The air conditioning system as claimed in any one of claims 1 to 5, wherein the heat exchange area of the first indoor heat exchanger is equal to or larger than the heat exchange area of the second heat exchanger.
7. The air conditioning system as claimed in claim 6, wherein the ratio of the heat exchange area of the first indoor heat exchanger to the heat exchange area of the second indoor heat exchanger is between 1:1 and 3: 1.
8. The air conditioning system as claimed in any one of claims 1 to 5, wherein the first indoor heat exchanger is located above the second indoor heat exchanger.
9. The air conditioning system according to any one of claims 1 to 5, wherein the first indoor heat exchanger and the second indoor heat exchanger are arranged in parallel, or the first indoor heat exchanger and the second indoor heat exchanger are V-shaped, and the side of the V-shaped opening is the windward side or the leeward side.
10. The air conditioning system as claimed in any one of claims 1 to 5, wherein the indoor throttling element comprises a dehumidification solenoid valve or an electronic expansion valve or a solenoid valve and a capillary tube connected in parallel.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111160405.8A CN113865028A (en) | 2021-09-30 | 2021-09-30 | Air conditioning system |
| PCT/CN2021/142806 WO2023050622A1 (en) | 2021-09-30 | 2021-12-30 | Air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111160405.8A CN113865028A (en) | 2021-09-30 | 2021-09-30 | Air conditioning system |
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| CN113865028A true CN113865028A (en) | 2021-12-31 |
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| CN202111160405.8A Pending CN113865028A (en) | 2021-09-30 | 2021-09-30 | Air conditioning system |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101639258A (en) * | 2008-07-31 | 2010-02-03 | Tcl集团股份有限公司 | Dehumidifying air conditioner and dehumidifying method thereof |
| CN105402819A (en) * | 2015-12-31 | 2016-03-16 | 海信（山东）空调有限公司 | Dehumidification air conditioner and dehumidification method |
| CN113432264A (en) * | 2021-06-29 | 2021-09-24 | 海信（山东）空调有限公司 | Refrigerant circulation system, method for controlling air conditioner to dehumidify and air conditioner |
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2021
- 2021-09-30 CN CN202111160405.8A patent/CN113865028A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101639258A (en) * | 2008-07-31 | 2010-02-03 | Tcl集团股份有限公司 | Dehumidifying air conditioner and dehumidifying method thereof |
| CN105402819A (en) * | 2015-12-31 | 2016-03-16 | 海信（山东）空调有限公司 | Dehumidification air conditioner and dehumidification method |
| CN113432264A (en) * | 2021-06-29 | 2021-09-24 | 海信（山东）空调有限公司 | Refrigerant circulation system, method for controlling air conditioner to dehumidify and air conditioner |
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