CN114738867B - Evaporation and cooling combined air conditioning unit and control method thereof - Google Patents
Evaporation and cooling combined air conditioning unit and control method thereof Download PDFInfo
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- CN114738867B CN114738867B CN202210288170.9A CN202210288170A CN114738867B CN 114738867 B CN114738867 B CN 114738867B CN 202210288170 A CN202210288170 A CN 202210288170A CN 114738867 B CN114738867 B CN 114738867B
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 49
- 238000001816 cooling Methods 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000001704 evaporation Methods 0.000 title description 6
- 230000008020 evaporation Effects 0.000 title description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 251
- 239000003507 refrigerant Substances 0.000 claims abstract description 101
- 230000001502 supplementing effect Effects 0.000 claims abstract description 100
- 239000013589 supplement Substances 0.000 claims abstract description 9
- 230000000694 effects Effects 0.000 abstract description 11
- 238000004891 communication Methods 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/0035—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning using evaporation
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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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- 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
-
- 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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Sustainable Development (AREA)
- Life Sciences & Earth Sciences (AREA)
- Human Computer Interaction (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The application relates to the technical field of air conditioners, in particular to an evaporative cooling combined air conditioner unit and a control method thereof, and aims to solve the problem that the existing evaporative cooling combined air conditioner unit is poor in heat exchange effect. Therefore, the evaporative cooling combined air conditioning unit comprises a first refrigerant circulation loop, an air supplementing branch, a water supplementing branch and a second refrigerant circulation loop, wherein a first condenser on the first refrigerant circulation loop comprises a water heat exchange component, the water supplementing branch can supplement water for the water heat exchange component, and water in the water supplementing branch can exchange heat with a refrigerant in the second refrigerant circulation loop and can exchange heat with the refrigerant in the air supplementing branch through a heat exchanger; based on the above, the evaporative cooling combined air conditioning unit can control the communication state of the water supplementing branch and the air supplementing branch and the running state of the second refrigerant circulation loop according to the water temperature in the water heat exchange component, so that the water temperature fluctuation range in the water heat exchange component is ensured to be small, the energy of the evaporative cooling combined air conditioning unit can be reasonably utilized, and the heat exchange effect is improved.
Description
Technical Field
The application belongs to the technical field of air conditioners, and particularly provides an evaporative cooling combined air conditioning unit and a control method thereof.
Background
The energy-saving environment-friendly type water chiller is a development trend of a central air conditioning system, a high-efficiency water chiller is selected as one of important measures for energy saving and environment friendliness of the central air conditioning system, and more air conditioning manufacturers are added into research and development camps of the large-scale high-efficiency water chiller.
Hotel, apartment, hospital, office building etc. need not only the air conditioner refrigeration in summer, need use hot water again, and the cold combination formula air conditioning unit of evaporation is with efficient, system integration is high and be applied to various places gradually, however when current cold combination formula air conditioning unit of evaporation is in summer operation, its water tank temperature is higher, needs to reduce the temperature of shower water through the mode of increasing the amount of wind, and the fluctuation range of water tank temperature has direct influence to the performance of the cold combination formula air conditioning unit of evaporation, especially can influence the heat transfer effect of the cold combination formula air conditioning unit of evaporation.
Accordingly, there is a need in the art for a new evaporative cooling combined air conditioning unit and control method thereof to solve the above-mentioned problems.
Disclosure of Invention
The application aims to solve the technical problems, namely the problem of poor heat exchange effect of the traditional evaporative cooling combined air conditioning unit.
In a first aspect, the application provides an evaporative cooling combined air conditioning unit, which comprises a first refrigerant circulation loop, an air supplementing branch and a water supplementing branch,
the first refrigerant circulation loop is provided with a first compressor, a first condenser, a first throttling component and a first evaporator,
the first condenser comprises a refrigerant heat exchange component and a water heat exchange component which are independently arranged and can exchange heat,
the water supplementing branch can supplement water for the water heat exchange component, and an electromagnetic valve is arranged on the water supplementing branch,
one end of the air supplementing branch is connected between the first throttling component and the refrigerant heat exchange component, the other end of the air supplementing branch is connected to an air supplementing port of the first compressor,
and a heat exchanger is further arranged between the water supplementing branch and the air supplementing branch, so that water in the water supplementing branch and a refrigerant in the air supplementing branch can exchange heat.
In the preferred technical scheme of the evaporative cooling combined air conditioning unit, the air supplementing branch is further provided with a second throttling component.
In the preferred technical scheme of the evaporative cooling combined air conditioning unit, the evaporative cooling combined air conditioning unit further comprises a second refrigerant circulation loop,
the second refrigerant circulation loop is provided with a second compressor, a second condenser, a third throttling component and a second evaporator, and the second evaporator is arranged to exchange heat with the water heat exchange component.
In the preferred technical scheme of the evaporative cooling combined air conditioning unit, the second evaporator is connected with the water heat exchange component through a heat exchange pipeline to exchange heat.
In the above preferred technical solution of the evaporative cooling combined air conditioning unit, the first condenser is an evaporative condenser.
On the other hand, the application also provides a control method of the evaporative cooling combined air conditioning unit, which comprises a first refrigerant circulation loop, an air supplementing branch, a water supplementing branch and a second refrigerant circulation loop,
the first refrigerant circulation loop is provided with a first compressor, a first condenser, a first throttling component and a first evaporator,
the first condenser comprises a refrigerant heat exchange component and a water heat exchange component which are independently arranged and can exchange heat,
the water supplementing branch can supplement water for the water heat exchange component, and an electromagnetic valve is arranged on the water supplementing branch,
one end of the air supplementing branch is connected between the first throttling component and the refrigerant heat exchange component, the other end of the air supplementing branch is connected to an air supplementing port of the first compressor,
a heat exchanger is also arranged between the water supplementing branch and the air supplementing branch so that the water in the water supplementing branch and the refrigerant in the air supplementing branch can exchange heat,
the second refrigerant circulation loop is provided with a second compressor, a second condenser, a third throttling component and a second evaporator, and the second evaporator is arranged to exchange heat with the water heat exchange component;
the control method comprises the following steps:
acquiring the water temperature in the water heat exchange component;
and controlling the on-off states of the water supplementing branch and the air supplementing branch and the running state of the second refrigerant circulation loop according to the water temperature in the water heat exchange component.
In the above preferred technical solution of the control method, the step of controlling the on-off states of the water replenishing branch and the air replenishing branch and the operation state of the second refrigerant circulation loop according to the water temperature in the water heat exchange member includes:
if the water temperature in the water heat exchange component is smaller than or equal to the first preset water temperature, the water supplementing branch and the air supplementing branch are controlled to be disconnected, and the second refrigerant circulation loop is controlled not to operate.
In the above preferred technical solution of the control method, the step of controlling the on-off states of the water replenishing branch and the air replenishing branch and the operation state of the second refrigerant circulation loop according to the water temperature in the water heat exchange member further includes:
if the water temperature in the water heat exchange component is larger than the first preset water temperature and smaller than or equal to the second preset water temperature, the water supplementing branch and the air supplementing branch are controlled to be disconnected, and the second refrigerant circulation loop is controlled to run.
In the above preferred technical solution of the control method, the step of controlling the on-off states of the water replenishing branch and the air replenishing branch and the operation state of the second refrigerant circulation loop according to the water temperature in the water heat exchange member further includes:
if the water temperature in the water heat exchange component is larger than the second preset water temperature and smaller than or equal to the third preset water temperature, the water supplementing branch is controlled to be communicated, the air supplementing branch is controlled to be disconnected, and the second refrigerant circulation loop is controlled to operate.
In the above preferred technical solution of the control method, the step of controlling the on-off states of the water replenishing branch and the air replenishing branch and the operation state of the second refrigerant circulation loop according to the water temperature in the water heat exchange member further includes:
and if the water temperature in the water heat exchange component is larger than the third preset water temperature, controlling the water supplementing branch to be communicated with the air supplementing branch and controlling the second refrigerant circulation loop to run.
Under the condition of adopting the technical scheme, through the heat exchanger arranged between the water supplementing branch and the air supplementing branch, water in the water supplementing branch can exchange heat with the refrigerant in the air supplementing branch, so that the water temperature fluctuation range of water in the water heat exchange component is effectively ensured to be small, the refrigerant in the air supplementing branch can be further evaporated, the first compressor is prevented from generating liquid impact, and the heat exchange effect of the evaporative cooling combined air conditioning unit is effectively improved.
In addition, in the preferred technical scheme of the application, the second throttling component can be selectively communicated with the air supplementing branch, so that the small water temperature fluctuation range of water in the water heat exchange component is further effectively ensured, and the heat exchange effect of the evaporative cooling combined air conditioning unit is further effectively improved.
Drawings
Preferred embodiments of the present application are described below with reference to the accompanying drawings, in which:
FIG. 1 is a schematic view of the overall structure of an evaporative cooling combined air conditioning unit according to the present application;
FIG. 2 is a flow chart of the main steps of the control method of the present application;
FIG. 3 is a flowchart of the specific steps of a preferred embodiment of the control method of the present application;
reference numerals:
11. a first refrigerant circulation circuit; 111. a first compressor; 112. a first condenser; 1121. a refrigerant heat exchange member; 1122. a water heat exchange member; 113. a first throttle member; 114. a first evaporator;
12. a gas supplementing branch; 121. a heat exchanger; 122. a second throttle member;
13. a water supplementing branch; 131. an electromagnetic valve;
14. a second refrigerant circulation circuit; 141. a second compressor; 142. a second condenser; 143. a third throttle member; 144. a second evaporator;
15. and a heat exchange pipeline.
Detailed Description
Preferred embodiments of the present application are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present application, and are not intended to limit the scope of the present application. Those skilled in the art can adapt it as desired to suit a particular application. For example, the present application is not limited to the specific application site of the evaporative cooling combined air conditioning unit, and it can be used in home or industry, and the change of the specific application site does not deviate from the principle of the present application and should fall within the protection scope of the present application.
It should be noted that in the description of the preferred embodiment, unless explicitly specified and limited otherwise, the term "connected" is to be construed broadly, and may be, for example, electrically connected or mechanically connected; can be directly connected, can be indirectly connected through an intermediate medium, and can also be communicated with the inside of two elements. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The specific meaning of the above terms in the present application can be understood by those skilled in the art according to the specific circumstances. Although the various steps of the control method of the present application are described in a particular order in the present application, these orders are not limiting and one skilled in the art may perform the steps in a different order without departing from the basic principles of the present application.
Referring first to fig. 1, fig. 1 is a schematic diagram of the overall structure of an evaporative cooling combined air conditioning unit according to the present application. Specifically, as shown in fig. 1, the evaporative cooling combined air conditioning unit of the present application includes a first refrigerant circulation loop 11, a gas-supplementing branch 12 and a water-supplementing branch 13, wherein a first compressor 111, a first condenser 112, a first throttling member 113 and a first evaporator 114 are disposed on the first refrigerant circulation loop 11, the first condenser 112 includes a refrigerant heat exchanging member 1121 and a water heat exchanging member 1122 which are independently disposed and can exchange heat, the water-supplementing branch 13 can supplement water to the water heat exchanging member 1122, an electromagnetic valve 131 is disposed on the water-supplementing branch 13, one end of the gas-supplementing branch 12 is connected between the first throttling member 113 and the refrigerant heat exchanging member 1121, the other end of the gas-supplementing branch 12 is connected to a gas-supplementing port of the first compressor 111, and a heat exchanger 121 is disposed between the water-supplementing branch 13 and the gas-supplementing branch 12, so that water in the water-supplementing branch 13 and refrigerant in the gas-supplementing branch 12 can exchange heat. Preferably, a water outlet (not shown) is provided on the water heat exchanging member 1122, and the water outlet may supply hot water to a user. The specific structures of the refrigerant heat exchange member 1121 and the water heat exchange member 1122 are not limited in the present application, as long as the refrigerant heat exchange member 1121 can be used as a refrigerant heat exchanger and the water heat exchange member 1122 can be used as a water heat exchanger, for example, the water heat exchange member 1122 may be a water tank or the like, which is not limitative.
Further, a second throttling member 122 is further disposed on the air supplementing branch 12, and the second throttling member 122 can selectively communicate with the air supplementing branch 12 to supplement air to the first compressor 111. The evaporative cooling combined air conditioning unit further comprises a second refrigerant circulation loop 14, a second compressor 141, a second condenser 142, a third throttling member 143 and a second evaporator 144 are arranged on the second refrigerant circulation loop 14, the second evaporator 144 is arranged to exchange heat with the water heat exchange member 1122, and specifically, the second evaporator 144 is connected with the water heat exchange member 1122 through a heat exchange pipeline 15 to exchange heat.
It should be noted that, the specific type and specific structure of the first compressor 111 and the second compressor 141 are not limited in the present application, and the first compressor 111 and the second compressor 141 may be scroll compressors, rotor compressors, screw compressors, and piston compressors, and the first compressor 111 and the second compressor 141 may be types of variable refrigerant flow or types of customized refrigerant flow, which are not limited, and may be set by a person skilled in the art according to the actual situation.
In addition, it should be noted that the specific structures and specific types of the first evaporator 114, the second condenser 142, the second evaporator 144, and the heat exchanger 121 are not limited in the present application, and may be an air-cooled heat exchanger or a water-cooled heat exchanger; preferably, in this embodiment, the first condenser 112 is an evaporative condenser, so as to effectively improve the heat exchange effect of the evaporative cooling combined air conditioning unit. In addition, the specific structure and the specific type of the first throttling member 113, the second throttling member 122 and the third throttling member 143 are not limited in the application, and the first throttling member 113 and the third throttling member 143 can be electronic expansion valves, thermal expansion valves, capillary or orifice plate throttling devices, and can be set by a person skilled in the art according to actual situations. In addition, it should be noted that the present application does not limit the specific structure of the evaporative cooling combined air conditioning unit, and may further include components such as an economizer, a stop valve, a four-way valve, etc., and a person skilled in the art may set the specific structure of the evaporative cooling combined air conditioning unit according to the actual use requirement.
Based on the above structure, the operation process of the evaporative cooling combined air conditioning unit is as follows:
during refrigeration operation, the refrigerant is discharged from the first compressor 111 and enters the refrigerant heat exchange component 1121 in the first condenser 112 for condensation and cooling, the cooled refrigerant is divided into two paths, one path of refrigerant enters the first evaporator 114 after being throttled and depressurized by the first throttling component 113, and the refrigerant is evaporated and absorbed by the first evaporator 114 and returns to the first compressor 111; the other path returns to the first compressor 111 through the air supplementing branch 12 to supplement a small amount of air to the first compressor 111, specifically, the refrigerant flowing out of the refrigerant heat exchange member 1121 enters the heat exchanger 121 through the second throttling member 122, exchanges heat with water in the water supplementing branch 13 in the heat exchanger 121, and returns to the first compressor 111 to supplement air, thereby completing the refrigeration cycle. In addition, the external water exchanges heat with the refrigerant in the air supplementing branch 12 in the heat exchanger 121 through the electromagnetic valve 131, the cooled water enters the water heat exchange component 1122, and the water in the water heat exchange component 1122 can be used as a cold source of the first condenser 112 on one hand and can be used as a heat source of the second evaporator 144 on the other hand; specifically, in the second refrigerant circulation loop 14, the refrigerant is discharged from the second compressor 141 and enters the second condenser 142 to be condensed and cooled, the cooled refrigerant is throttled by the third throttling member 143 and enters the second evaporator 144, the refrigerant in the second evaporator 144 exchanges heat with water in the water heat exchange member 1122 through the heat exchange pipeline 15, and the heat exchanged refrigerant returns to the second compressor 141 to complete the heating cycle.
It should be noted that the specific operation mode of the evaporative cooling combined air conditioning unit is not limited in the present application, and may further include a defrosting mode, which can be set by a person skilled in the art according to the actual situation.
Further, the evaporative cooling combined air conditioning unit of the present application further includes a temperature sensor capable of detecting the water temperature in the water heat exchanging member 1122, and a controller capable of acquiring detection data of the temperature sensor, and the controller is also capable of controlling the operation state of the evaporative cooling combined air conditioning unit, for example, the communication state of the air supplementing branch 12 and the water supplementing branch 13, the operation state of the second refrigerant circulation circuit 14, and the like. The specific structure, the number of specific settings, and the specific setting positions of the temperature sensor are not limited, and the temperature sensor may be disposed inside the water heat exchange member 1122 or outside the water heat exchange member 1122, which is not limitative, so long as the temperature sensor can detect the water temperature in the water heat exchange member 1122, and those skilled in the art may set the specific structure, the number of specific settings, and the specific setting positions of the temperature sensor according to the actual use situation.
In addition, it can be understood by those skilled in the art that the present application does not limit the specific structure and model of the controller, and the controller may be the original controller of the evaporative cooling combined air conditioning unit, or may be a controller separately provided for executing the control method of the present application, and the technician may set the structure and model of the controller according to the actual use requirement.
Referring next to fig. 2, a flow chart of main steps of the control method of the present application is shown. As shown in fig. 2, based on the evaporative cooling combined air conditioning unit described in the above embodiment, the control method of the present application mainly includes the following steps:
s1: acquiring the water temperature in the water heat exchange component;
s2: and controlling the on-off states of the water supplementing branch and the air supplementing branch and the running state of the second refrigerant circulation loop according to the water temperature in the water heat exchange component.
First, in step S1, the controller acquires the water temperature in the water heat exchanging member 1122 detected by the temperature sensor. Of course, the specific obtaining mode and obtaining timing of the water temperature in the water heat exchange member 1122 are not limited, and the controller may obtain the data detected by the temperature sensor in real time or may obtain the data at intervals of a certain period of time, which is not limited, and may be set by a person skilled in the art according to the actual situation.
Next, in step S2, the controller controls the open/close states of the solenoid valve 131 and the second throttle member 122 and the operation state of the second compressor 141, that is, the on/off states of the water replenishment branch 13 and the air replenishment branch 12 and the operation state of the second refrigerant circulation circuit 14, according to the acquired water temperature in the water heat exchanging member 1122.
It should be noted that, the specific operation state of the second compressor 141 controlled by the controller is not limited in the present application, and the controller may control the opening and closing states of the second compressor 141 according to the water temperature in the water heat exchange member 1122, and may also control parameters such as the operation frequency of the second compressor 141, which are not limited, and may be set by a person skilled in the art according to the actual situation.
Referring next to fig. 3, a flowchart of the detailed steps of a preferred embodiment of the present application is shown. As shown in fig. 3, based on the evaporative cooling combined air conditioning unit described in the above preferred embodiment, a preferred embodiment of the control method of the present application specifically includes the following steps:
s101: acquiring the water temperature in the water heat exchange component;
s102: if the water temperature in the water heat exchange component is smaller than or equal to the first preset water temperature, the water supplementing branch and the air supplementing branch are controlled to be disconnected, and the second refrigerant circulation loop is controlled not to operate;
s103: if the water temperature in the water heat exchange component is larger than the first preset water temperature and smaller than or equal to the second preset water temperature, the water supplementing branch and the air supplementing branch are controlled to be disconnected, and the second refrigerant circulation loop is controlled to operate;
s104: if the water temperature in the water heat exchange component is larger than the second preset water temperature and smaller than or equal to the third preset water temperature, the water supplementing branch is controlled to be communicated, the air supplementing branch is controlled to be disconnected, and the second refrigerant circulation loop is controlled to operate;
s105: if the water temperature in the water heat exchange component is larger than the third preset water temperature, the water supplementing branch is controlled to be communicated with the air supplementing branch, and the second refrigerant circulation loop is controlled to operate.
In step S101, the controller acquires the water temperature in the water heat exchanging member 1122 detected by the temperature sensor. Of course, the specific obtaining mode and obtaining timing of the water temperature in the water heat exchange member 1122 are not limited, and the controller may obtain the data detected by the temperature sensor in real time or may obtain the data at intervals of a certain period of time, which is not limited, and may be set by a person skilled in the art according to the actual situation.
Specifically, in step S102, if the water temperature in the water heat exchange member 1122 is less than or equal to the first preset water temperature, which means that the water temperature in the water heat exchange member 1122 is too low to exchange heat with the refrigerant in the air supply branch 12 and the refrigerant in the second refrigerant circulation circuit 14, the controller controls the solenoid valve 131, the second throttling member 122 and the second compressor 141 to be closed, i.e., the controller controls the water supply branch 13 and the air supply branch 12 to be disconnected and controls the second refrigerant circulation circuit 14 not to operate, so as to effectively ensure the normal operation of the first refrigerant circulation circuit 11.
Further, in case that the water temperature in the water heat exchanging element 1122 is high, the controller may selectively control the opened and closed states of the solenoid valve 131 and the second throttling element 122 to effectively improve the heat exchanging efficiency and the heat exchanging effect of the evaporative cooling combined air conditioner.
Specifically, in step S103, if the water temperature in the water heat exchanging member 1122 is greater than the first preset water temperature and less than or equal to the second preset water temperature, the controller controls the solenoid valve 131 and the second throttling member 122 to be closed and controls the second compressor 141 to operate, i.e., the controller controls the water replenishment branch 13 and the air replenishment branch 12 to be disconnected and controls the second refrigerant circulation circuit 14 to operate so as to effectively satisfy the heating requirement of the user through the second refrigerant circulation circuit 14.
In addition, in step S104, if the water temperature in the water heat exchanging member 1122 is greater than the second preset water temperature and less than or equal to the third preset water temperature, which means that the water temperature in the water heat exchanging member 1122 is further increased compared to the water temperatures in the water heat exchanging members 1122 in step S102 and step S103, the controller controls the solenoid valve 131 to open, the second throttling member 122 to close, and controls the second compressor 141 to operate, that is, the controller controls the water supplementing branch 13 to be connected, the air supplementing branch 12 to be disconnected, and the second refrigerant circulation circuit 14 to operate, so as to effectively meet the heating requirement of the user, provide enough hot water for the user, and also effectively improve the heat exchanging efficiency and the heat exchanging effect of the evaporative cooling combined air conditioner.
Further, in step S105, if the water temperature in the water heat exchange member 1122 is greater than the third preset water temperature, and in this case, the water temperature in the water heat exchange member 1122 is higher, so that the heat exchange requirements of the air-supplementing branch 12 and the second refrigerant circulation circuit 14 can be met, and hot water can be provided for the user, the controller controls the solenoid valve 131, the second throttling member 122 and the second compressor 141 to be opened, that is, the controller controls the water-supplementing branch 13 and the air-supplementing branch 12 to be communicated and controls the second refrigerant circulation circuit 14 to operate, so that the energy of the evaporative cooling combined air-conditioning unit can be reasonably utilized, and the heat exchange efficiency and the heat exchange effect of the evaporative cooling combined air-conditioning unit can be further effectively improved.
It should be noted that, the present application does not make any limitation on specific set values of the first preset water temperature, the second preset water temperature, and the third preset water temperature; as a specific implementation manner, in this embodiment, the first preset water temperature is preferably set to 28 ℃, the second preset water temperature is preferably set to 32 ℃, and the third preset water temperature is preferably set to 36 ℃, so as to effectively ensure the actual use requirement of a user and effectively improve the heat exchange efficiency and the heat exchange effect of the evaporative cooling combined air conditioning unit; of course, this is not limitative, and the person skilled in the art can set it according to the actual use requirements of the user and the actual operation conditions of the evaporative cooling combined air conditioning unit.
In addition, it should be noted that the specific situations of controlling the on-off states of the water replenishing branch 13 and the air replenishing branch 12 and the operation state of the second refrigerant circulation circuit 14 by the controller according to the water temperature in the water heat exchange member 1122 are not limited in the present application, that is, the present application is not limited to the four situations in the steps S102 to S105, and the fourth preset water temperature, the fifth preset water temperature, etc. may be set, and may be set by a person skilled in the art according to the actual use situation.
Thus far, the technical solution of the present application has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present application is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present application, and such modifications and substitutions will fall within the scope of the present application.
Claims (7)
1. The evaporative cooling combined air conditioning unit is characterized by comprising a first refrigerant circulation loop, an air supplementing branch and a water supplementing branch,
the first refrigerant circulation loop is provided with a first compressor, a first condenser, a first throttling component and a first evaporator,
the first condenser comprises a refrigerant heat exchange component and a water heat exchange component which are independently arranged and can exchange heat,
the water supplementing branch can supplement water for the water heat exchange component, and an electromagnetic valve is arranged on the water supplementing branch,
one end of the air supplementing branch is connected between the first throttling component and the refrigerant heat exchange component, the other end of the air supplementing branch is connected to an air supplementing port of the first compressor,
a heat exchanger is further arranged between the water supplementing branch and the air supplementing branch, so that water in the water supplementing branch and a refrigerant in the air supplementing branch can exchange heat;
the evaporative cooling combined air conditioning unit also comprises a second refrigerant circulation loop,
the second refrigerant circulation loop is provided with a second compressor, a second condenser, a third throttling component and a second evaporator, and the second evaporator is arranged to exchange heat with the water heat exchange component;
the second evaporator is connected with the water heat exchange component through a heat exchange pipeline so as to exchange heat.
2. The evaporative cooling combined air conditioning unit according to claim 1, wherein a second throttling member is further provided on the air supplementing branch.
3. The evaporative cooling combined air conditioning unit according to any of claims 1 to 2, wherein the first condenser is an evaporative condenser.
4. A control method of an evaporative cooling combined air conditioning unit is characterized in that the evaporative cooling combined air conditioning unit comprises a first refrigerant circulation loop, an air supplementing branch, a water supplementing branch and a second refrigerant circulation loop,
the first refrigerant circulation loop is provided with a first compressor, a first condenser, a first throttling component and a first evaporator,
the first condenser comprises a refrigerant heat exchange component and a water heat exchange component which are independently arranged and can exchange heat,
the water supplementing branch can supplement water for the water heat exchange component, and an electromagnetic valve is arranged on the water supplementing branch,
one end of the air supplementing branch is connected between the first throttling component and the refrigerant heat exchange component, the other end of the air supplementing branch is connected to an air supplementing port of the first compressor,
a heat exchanger is also arranged between the water supplementing branch and the air supplementing branch so that the water in the water supplementing branch and the refrigerant in the air supplementing branch can exchange heat,
the second refrigerant circulation loop is provided with a second compressor, a second condenser, a third throttling component and a second evaporator, and the second evaporator is arranged to exchange heat with the water heat exchange component;
the control method comprises the following steps:
acquiring the water temperature in the water heat exchange component;
according to the water temperature in the water heat exchange component, controlling the on-off states of the water supplementing branch and the air supplementing branch and the running state of the second refrigerant circulation loop;
the step of controlling the on-off states of the water replenishing branch and the air replenishing branch and the operation state of the second refrigerant circulation loop according to the water temperature in the water heat exchange component comprises the following steps:
if the water temperature in the water heat exchange component is smaller than or equal to the first preset water temperature, the water supplementing branch and the air supplementing branch are controlled to be disconnected, and the second refrigerant circulation loop is controlled not to operate.
5. The control method according to claim 4, wherein the step of controlling the on-off states of the water supply branch and the air supply branch and the operation state of the second refrigerant circulation circuit according to the water temperature in the water heat exchanging member further comprises:
if the water temperature in the water heat exchange component is larger than the first preset water temperature and smaller than or equal to the second preset water temperature, the water supplementing branch and the air supplementing branch are controlled to be disconnected, and the second refrigerant circulation loop is controlled to run.
6. The control method according to claim 5, wherein the step of controlling the on-off states of the water supply branch and the air supply branch and the operation state of the second refrigerant circulation circuit according to the water temperature in the water heat exchanging member further comprises:
if the water temperature in the water heat exchange component is larger than the second preset water temperature and smaller than or equal to the third preset water temperature, the water supplementing branch is controlled to be communicated, the air supplementing branch is controlled to be disconnected, and the second refrigerant circulation loop is controlled to operate.
7. The control method according to claim 6, wherein the step of controlling the on-off states of the water supply branch and the air supply branch and the operation state of the second refrigerant circulation circuit according to the water temperature in the water heat exchanging member further comprises:
and if the water temperature in the water heat exchange component is larger than the third preset water temperature, controlling the water supplementing branch to be communicated with the air supplementing branch and controlling the second refrigerant circulation loop to run.
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201000245Y (en) * | 2006-12-28 | 2008-01-02 | 苏宇贵 | Air conditioner hot-water compounding machine |
| JP2012042177A (en) * | 2010-08-23 | 2012-03-01 | Hitachi Appliances Inc | Heat pump type hot water generator |
| KR20130058918A (en) * | 2011-11-28 | 2013-06-05 | 엘지전자 주식회사 | A cascade heat pump |
| CN103148586A (en) * | 2013-03-08 | 2013-06-12 | 广东五星太阳能股份有限公司 | Ultralow-temperature air source heat pump hot water unit with air supply and overheating functions |
| CN203908097U (en) * | 2014-05-07 | 2014-10-29 | 美的集团股份有限公司 | Enhanced vapor injection air conditioner |
| CN204115319U (en) * | 2014-09-16 | 2015-01-21 | 广东美的制冷设备有限公司 | Air-conditioner and tonifying Qi thereof increase enthalpy system |
| CN109186013A (en) * | 2018-07-26 | 2019-01-11 | 顺德职业技术学院 | The efficient trilogy supply air-conditioning water heater system control method of wide operating condition and unit |
| JP2019027729A (en) * | 2017-08-02 | 2019-02-21 | 株式会社デンソー | Complex type heat exchanger |
| CN209672625U (en) * | 2018-12-26 | 2019-11-22 | 临沂约翰迪智能科技有限公司 | A kind of ultra low temperature overlapping heat pump water cooler |
| CN211119815U (en) * | 2019-11-18 | 2020-07-28 | 珠海格力电器股份有限公司 | Air-supplementing enthalpy-increasing heat pump system and air conditioner |
-
2022
- 2022-03-22 CN CN202210288170.9A patent/CN114738867B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201000245Y (en) * | 2006-12-28 | 2008-01-02 | 苏宇贵 | Air conditioner hot-water compounding machine |
| JP2012042177A (en) * | 2010-08-23 | 2012-03-01 | Hitachi Appliances Inc | Heat pump type hot water generator |
| KR20130058918A (en) * | 2011-11-28 | 2013-06-05 | 엘지전자 주식회사 | A cascade heat pump |
| CN103148586A (en) * | 2013-03-08 | 2013-06-12 | 广东五星太阳能股份有限公司 | Ultralow-temperature air source heat pump hot water unit with air supply and overheating functions |
| CN203908097U (en) * | 2014-05-07 | 2014-10-29 | 美的集团股份有限公司 | Enhanced vapor injection air conditioner |
| CN204115319U (en) * | 2014-09-16 | 2015-01-21 | 广东美的制冷设备有限公司 | Air-conditioner and tonifying Qi thereof increase enthalpy system |
| JP2019027729A (en) * | 2017-08-02 | 2019-02-21 | 株式会社デンソー | Complex type heat exchanger |
| CN109186013A (en) * | 2018-07-26 | 2019-01-11 | 顺德职业技术学院 | The efficient trilogy supply air-conditioning water heater system control method of wide operating condition and unit |
| CN209672625U (en) * | 2018-12-26 | 2019-11-22 | 临沂约翰迪智能科技有限公司 | A kind of ultra low temperature overlapping heat pump water cooler |
| CN211119815U (en) * | 2019-11-18 | 2020-07-28 | 珠海格力电器股份有限公司 | Air-supplementing enthalpy-increasing heat pump system and air conditioner |
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| CN114738867A (en) | 2022-07-12 |
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