CN114440355A - Heat recovery indirect evaporative cooling device and heat recovery method - Google Patents

Heat recovery indirect evaporative cooling device and heat recovery method Download PDF

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Publication number
CN114440355A
CN114440355A CN202210088769.8A CN202210088769A CN114440355A CN 114440355 A CN114440355 A CN 114440355A CN 202210088769 A CN202210088769 A CN 202210088769A CN 114440355 A CN114440355 A CN 114440355A
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CN
China
Prior art keywords
heat recovery
port
heat exchanger
compressor
heat
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Pending
Application number
CN202210088769.8A
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Chinese (zh)
Inventor
颜利波
苏林
丁云霄
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Midea Group Co Ltd
GD Midea Heating and Ventilating Equipment Co Ltd
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Midea Group Co Ltd
GD Midea Heating and Ventilating Equipment Co Ltd
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Application filed by Midea Group Co Ltd, GD Midea Heating and Ventilating Equipment Co Ltd filed Critical Midea Group Co Ltd
Priority to CN202210088769.8A priority Critical patent/CN114440355A/en
Publication of CN114440355A publication Critical patent/CN114440355A/en
Priority to PCT/CN2023/071095 priority patent/WO2023142980A1/en
Pending legal-status Critical Current

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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
    • 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
    • F24F11/46—Improving electric energy efficiency or saving
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
    • F24F12/001—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air
    • 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
    • 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
    • F24F5/0017—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 cold storage bodies, e.g. ice
    • 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
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/56—Heat recovery units

Abstract

The embodiment of the application provides a heat recovery indirect evaporative cooling device and a heat recovery method, and relates to the technical field of air conditioners. The device comprises a compressor, a four-way valve, an air exhaust heat exchanger, a compressor, an air compressor, a heat exchanger; the second branch is connected with an air supply heat exchanger, and the air supply heat exchanger is connected with the inlet end of the compressor; a third port of the four-way valve is connected with an inlet end of the compressor, and different heat recovery modes are operated by adjusting the opening states of the first port, the second port, the third port and the fourth port of the four-way valve; the heat recovery assembly is arranged on a pipeline between the compressor and the first port and used for recovering waste heat of a refrigerant output from the compressor in different heat recovery modes, the structure required by the waste heat recovery is simple, the occupied space is small, the equipment cost is low, and the problems of complex structure, large occupied space and high equipment cost of the existing method are solved.

Description

Heat recovery indirect evaporative cooling device and heat recovery method
Technical Field
The application relates to the technical field of air conditioners, in particular to a heat recovery indirect evaporative cooling device and a heat recovery method.
Background
The data center has refrigeration requirements all year round, and has large heat load and abundant waste heat resources. Indirect evaporative cooling utilizes dry air energy to refrigerate, can realize high-energy-efficiency cooling of a data center, and is widely applied in the industry. However, most indirect evaporative cooling devices in data centers in the industry do not have a waste heat recovery function, and a small number of schemes with the waste heat recovery function need to additionally arrange a whole set of heat pump system, which causes the problems of complex structure, large space occupation, high equipment cost and the like of the indirect evaporative cooling and waste heat recovery composite device.
Disclosure of Invention
The embodiment of the application aims to provide a heat recovery indirect evaporative cooling device and a heat recovery method, which have the advantages of simple structure, small occupied space and low equipment cost for realizing waste heat recovery, and solve the problems of complex structure, large occupied space and high equipment cost of the conventional method.
The embodiment of the application provides an indirect evaporative cooling device of heat recovery, the device is including the heat exchanger of airing exhaust, air supply heat exchanger, compressor and heat recovery subassembly:
the outlet end of the compressor is connected with a first port of a four-way valve, a second port of the four-way valve comprises a first branch and a second branch, the first branch is connected with the exhaust heat exchanger, and the exhaust heat exchanger is connected with a fourth end of the four-way valve;
the second branch is connected with the air supply heat exchanger, and the air supply heat exchanger is connected with the inlet end of the compressor;
a third port of the four-way valve is connected with an inlet end of the compressor, and different heat recovery modes are operated by adjusting the opening states of a first port, a second port, a third port and a fourth port of the four-way valve;
and the heat recovery assembly is arranged on a pipeline between the compressor and the first port and used for recovering waste heat of the refrigerant output by the compressor in different heat recovery modes.
In the above-mentioned realization process, through the state of opening of four ports of adjusting the cross valve, switch different mode, realize better waste heat recovery effect, and the structure is simpler, the space occupies for a short time, equipment cost is low, waste heat temperature control is more accurate, under the prerequisite that satisfies data computer lab air supply temperature and cold volume demand, fully retrieve data computer lab exhaust waste heat as far as possible, can also realize energy-efficient operation according to demand automatic adjustment heat recovery mode simultaneously.
Further, the heat recovery assembly includes:
the heat recovery heat exchanger is connected with the outlet end of the compressor;
and the energy storage assembly is connected with the heat recovery heat exchanger and used for exchanging heat with a refrigerant passing through the heat recovery heat exchanger and storing the heat of the refrigerant.
In the implementation process, the energy storage assembly performs heat exchange with the refrigerant through the heat recovery heat exchanger and stores the obtained heat.
Further, the energy storage assembly includes:
the water storage tank is connected with the inlet end of the heat recovery heat exchanger through a pipeline, and the outlet end of the heat recovery heat exchanger is connected with the inlet end of the water storage tank through the second water pump, so that the water in the water storage tank absorbs the heat of the refrigerant passing through the heat recovery heat exchanger.
In the implementation process, the purpose of waste heat recovery is achieved by heat exchange between water in the water storage tank and the refrigerant and heat storage.
Further, the heat recovery assembly further comprises:
and the first end of the adjusting electromagnetic valve is connected with the outlet end of the heat recovery heat exchanger, and the second end of the adjusting electromagnetic valve is connected with the outlet end of the water storage tank and used for adjusting the water flow passing through the heat recovery heat exchanger.
In the implementation process, the water flow passing through the heat recovery heat exchanger is adjusted by using the adjusting electromagnetic valve, so that the waste heat recovery and the water temperature are accurately controlled.
Further, the heat recovery mode includes a high-load part heat recovery mode, and when the high-load part heat recovery mode is operated:
the first port is in communication with the fourth port, and the second and third ports are closed.
In the implementation process, the first port is communicated with the fourth port, so that the device operates in a mode of a condenser plus an evaporator, and high-load part heat recovery is realized.
Further, the heat recovery mode includes a low load high heat recovery mode, and when the low load high heat recovery mode is operated:
the first port is in communication with the second port, and the fourth port is in communication with the third port.
In the implementation process, the first port is communicated with the second port, and the fourth port is communicated with the third port, so that the device operates in a double-evaporator mode, and low-load high-heat recovery is realized.
Further, the heat recovery mode includes a high-load high-heat recovery mode, and when the high-load high-heat recovery mode is operated:
the first port is communicated with the second port, and the fourth port is communicated with the third port;
the first throttling element is open and the second throttling element is closed, or the first throttling element is closed and the second throttling element is open.
In the implementation process, the first throttling element or the second throttling element is opened, so that the device operates in a single evaporator mode, and high-load high-heat recovery is realized.
Further, the apparatus further comprises:
and the evaporative cooling assembly is used for adjusting the temperature of the return air in the room.
In the implementation process, the indoor return air temperature is adjusted by utilizing the evaporative cooling assembly.
Further, the apparatus further comprises:
and the controller is connected with the four-way valve and used for controlling the communication states of four ports of the four-way valve and running in different heat recovery modes.
In the implementation process, the communication states of the four ports of the four-way valve are adjusted through the controller according to different load requirements, and the switching of different heat recovery modes is achieved.
Further, the apparatus comprises:
the first end of the first electromagnetic valve is connected with the exhaust heat exchanger, and the second end of the first electromagnetic valve is connected with the outlet end of the compressor;
and the first end of the second electromagnetic valve is connected with the exhaust heat exchanger, the second end of the second electromagnetic valve is connected with the inlet end of the compressor, and the second electromagnetic valve operates in different heat recovery modes by adjusting the opening and closing states of the first electromagnetic valve and the second electromagnetic valve.
In the implementation process, the switching of different heat recovery modes can be realized by adjusting the opening and closing states of the first electromagnetic valve and the second electromagnetic valve.
The embodiment of the present application further provides a heat recovery method, which is applied to the controller of the heat recovery indirect evaporative cooling device, and the method includes:
determining load requirements according to the temperature difference between return water and outlet water of the compressor;
and adjusting the opening state of a port of the four-way valve based on the load requirement so as to enable the heat recovery indirect evaporative cooling device to operate different heat recovery modes.
In the implementation process, the switching of each heat recovery mode is performed according to the load requirement of the heat recovery system. The control can be specifically carried out according to the temperature difference between the return water and the outlet water, and the load is larger when the temperature difference between the inlet water and the outlet water is larger.
An embodiment of the present application further provides a readable storage medium, in which computer program instructions are stored, and when the computer program instructions are read and executed by a processor, the method for heat recovery is performed.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a heat recovery indirect evaporative cooling device according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of a high load portion heat recovery configuration provided by an embodiment of the present application;
FIG. 3 is a schematic view of low load high heat recovery provided by the embodiments of the present application;
FIG. 4 is a schematic diagram of high load and high heat recovery provided by an embodiment of the present application;
FIG. 5 is a schematic structural diagram of another heat recovery indirect evaporative cooling device provided in an embodiment of the present application;
fig. 6 is a flowchart of a heat recovery method according to an embodiment of the present application.
Icon:
11-an exhaust air heat exchanger; 12-a first throttling element; 13-a second throttling element; 14-a four-way valve; 15-air supply heat exchanger; 16-a compressor; 17-a heat recovery heat exchanger; 18-a water storage tank; 19-a second water pump; 20-a first water pump; 21-a heat exchange core; 22-a spray opening; 23-a water pan; 24-a spray header; 25-a one-way valve; 26 — a first port; 27-a second port; 28-a third port; 29-a fourth port; 30-adjusting the electromagnetic valve; 31-a first solenoid valve; 32-second solenoid valve.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.
Example 1
Referring to fig. 1, fig. 1 is a schematic structural diagram of a heat recovery indirect evaporative cooling device according to an embodiment of the present application. The device comprises an exhaust air heat exchanger 11, an air supply heat exchanger 15, a compressor 16 and a heat recovery assembly:
the outlet end of the compressor 16 is connected to a first port 26 of a four-way valve 14, a second port 27 of the four-way valve 14 comprises a first branch and a second branch, the first branch is connected to the exhaust heat exchanger 11, and the exhaust heat exchanger 11 is connected to the fourth end of the four-way valve 14;
the second branch is connected with the air supply heat exchanger 15, and the air supply heat exchanger 15 is connected with the inlet end of the compressor 16;
the third end of the four-way valve 14 is connected with the inlet end of the compressor 16;
by adjusting the open states of the first port 26, the second port 27, the third port 28 and the fourth port 29 of the four-way valve 14 to operate different heat recovery modes;
and the heat recovery assembly is arranged on a pipeline between the compressor 16 and the first port 26 and is used for recovering waste heat of the refrigerant output by the compressor 16.
Specifically, the heat recovery assembly includes:
a heat recovery heat exchanger 17 connected to an outlet end of the compressor 16;
and the energy storage assembly is connected with the heat recovery heat exchanger 17 and used for exchanging heat with a refrigerant passing through the heat recovery heat exchanger 17 and storing the heat of the refrigerant.
The energy storage component comprises:
the outlet end of the water storage tank 18 is connected with the inlet end of the heat recovery heat exchanger 17 through a pipeline, and the outlet end of the heat recovery heat exchanger 17 is connected with the inlet end of the water storage tank 18 through the second water pump 19, so that the water in the water storage tank 18 absorbs the heat of the refrigerant passing through the heat recovery heat exchanger 17.
A one-way valve 25 is also provided in the main line of the second port 27 to allow communication from the second port 27 to both branches.
The device also includes an evaporative cooling assembly for regulating the temperature of the return air in the room.
Specifically, the evaporative cooling assembly comprises a first water pump 20, a heat exchange core body 21, a spraying opening 22, a spraying water pipe 24 and a water pan 23.
The heat exchange core 21 is composed of two sets of flow channels, and the cold and hot fluids respectively flow through the two sets of flow channels of the heat exchange core 21 and perform heat exchange. When the evaporative cooling module works, outdoor fresh air with lower outdoor temperature or humidity enters one set of flow channels of the heat exchange core body 21, indoor return air enters the other set of flow channels of the heat exchange core body 21, the first water pump 20 pumps water from the water pan 23 and conveys the water to the spraying opening 22 through the spraying water pipe 24, and the water is uniformly sprayed to the interior of the heat exchange core body 21 from the spraying opening 22 and is evaporated in the flow channels of the outdoor fresh air to exchange heat with the indoor return air so as to improve the cooling effect of the indoor return air.
Fig. 2 is a schematic diagram of the structure of the high-load part heat recovery. In this mode, the first port 26 is in communication with said fourth port 29 and the second port 27 and the third port 28 are closed, e.g. by a single-way conductance of the non-return valve 25 for the purpose of closing the second port 27 and the third port 28.
Under this mode, realize the mode of operation of hot water + condenser + evaporimeter, wherein, exhaust heat exchanger 11 is as the condenser, and air supply heat exchanger 15 is as the evaporimeter, and specific working process is as follows:
because a large amount of cold energy is needed, the refrigerant discharged from the outlet end of the compressor 16 enters the exhaust heat exchanger 11 for condensation through the first port 26 and the fourth port 29 after passing through the heat recovery heat exchanger 17 and exchanging heat with the water in the water storage tank 18, enters the air supply heat exchanger 15 after condensation, further condenses, and returns to the compressor 16 again.
Wherein, the heat recovery subassembly still includes:
and the first end of the adjusting electromagnetic valve 30 is connected with the outlet end of the heat recovery heat exchanger 17, and the second end of the adjusting electromagnetic valve is connected with the outlet end of the water storage tank 18, and is used for adjusting the water flow passing through the heat recovery heat exchanger 17.
In the waste heat recovery process, the opening degree and the opening and closing state of the regulating electromagnetic valve 30 can be regulated, and the fine regulation of the water flow flowing through the heat recovery heat exchanger 17 can be realized, so that the aim of accurately regulating the water temperature is fulfilled.
As shown in fig. 3, a schematic view of low load high heat recovery. In this mode, the first port 26 and the second port 27 are in communication, and the fourth port 29 and the third port 28 are in communication.
In this mode, a hot water + double evaporator operating mode is achieved, in particular:
because a large amount of cold energy is not needed, the refrigerant discharged from the outlet end of the compressor 16 enters the exhaust heat exchanger 11 and the air supply heat exchanger 15 through the first branch and the second branch respectively after heat exchange with the water in the water storage tank 18 through the heat recovery heat exchanger 17, is condensed respectively, and returns to the inlet end of the compressor 16.
Fig. 4 is a schematic diagram showing high load and high heat recovery. In this mode, the first branch is provided with a first throttling element 12, and the second branch is provided with a second throttling element 13;
the first port 26 and the second port 27 are communicated, and the fourth port 29 and the third port 28 are communicated;
the first throttle element 12 is open and the second throttle element 13 is closed, or the first throttle element 12 is closed and the second throttle element 13 is open.
In this mode, a hot water + single evaporator operating mode is achieved, in particular:
after the refrigerant discharged from the outlet end of the compressor 16 passes through the heat recovery heat exchanger 17 and the water in the water storage tank 18 for heat exchange, and then passes through the first port 26 and the second port 27 of the four-way valve 14, if the first throttling element 12 is opened and the second throttling element 13 is closed, the refrigerant enters the exhaust heat exchanger 11 through the first branch for condensation, and then returns to the inlet end of the compressor 16 through the fourth port 29 and the third port 28.
If the first throttle valve is closed and the second throttle valve is opened, the air enters the air-sending heat exchanger 15 through the second branch for condensation, and then returns to the inlet end of the compressor 16.
In this process, the exhaust heat exchanger 11 or the supply heat exchanger 15 serves as an evaporator to condense the refrigerant.
The apparatus further includes a controller connected to the four-way valve 14 for controlling a communication state of four ports of the four-way valve 14 to operate in different heat recovery modes.
Specifically, the switching of the respective heat recovery modes needs to be performed according to the load demand of the heat recovery system. The control can be specifically carried out according to the temperature difference between the return water and the outlet water, and the load is larger when the temperature difference between the inlet water and the outlet water is larger, so that the mode can be adjusted according to the load requirement.
The switching of the condenser and the evaporator of the exhaust heat exchanger 11 is realized by the adjusting function of the controller on the four-way valve 14, so that the requirement of heat recovery load is better matched.
Example 2
As another embodiment, two solenoid valves may be used instead of the four-way valve 14 to realize the mode switching function of the exhaust heat exchanger 11. Fig. 5 is a schematic structural view of another heat recovery indirect evaporative cooling device.
In the device, a first electromagnetic valve 31 is connected with the exhaust heat exchanger 11 at a first end, and is connected with the outlet end of the compressor 16 at a second end;
and a second electromagnetic valve 32, a first end of which is connected with the exhaust heat exchanger 11 and is the same as the connection end of the first electromagnetic valve 31, and a second end of which is connected with the inlet end of the compressor 16, and the second electromagnetic valve is operated in different heat recovery modes by adjusting the opening and closing states of the first electromagnetic valve 31 and the second electromagnetic valve 32.
The heat recovery system further comprises a controller, wherein the controller is electrically connected with the first electromagnetic valve 31 and the second electromagnetic valve 32, and different heat recovery modes are operated by controlling the opening and closing states of the first electromagnetic valve 31 and the second electromagnetic valve 32.
The device make full use of compressor 16, exhaust heat exchanger 11, air supply heat exchanger 15 and electronic expansion valve, only additionally increase few parts (cross valve 14 and heat recovery heat exchanger 17 etc.) and adjust a small amount of refrigerant pipelines and can realize fine waste heat recovery effect, this indirect evaporative cooling device of heat recovery's structure is simpler, the space occupies for a short time, low equipment cost, waste heat temperature control is more accurate, under the prerequisite that satisfies data computer lab air supply temperature and cold volume demand, the waste heat of data computer lab exhaust is fully retrieved as far as possible, simultaneously can also be according to demand automatic adjustment heat recovery mode, realize high-efficient energy-saving operation.
Example 3
An embodiment of the present application further provides a heat recovery method, which is applied to a controller of a heat recovery indirect evaporative cooling device, as shown in fig. 6, and is a flowchart of the heat recovery method, where the method includes:
step S100: determining the load demand according to the temperature difference between the return water and the outlet water of the compressor 16;
step S200: based on the load demand, the port opening state of the four-way valve 14 or the opening and closing state of the solenoid valve is adjusted, so that the heat recovery indirect evaporative cooling device operates in different heat recovery modes.
The switching of each heat recovery mode is carried out according to the load requirement, and can be specifically controlled according to the return water and outlet water temperature difference, and when the inlet and outlet water temperature difference is larger, the load is also larger.
An embodiment of the present application further provides a readable storage medium, in which computer program instructions are stored, and when the computer program instructions are read and executed by a processor, the method for heat recovery is performed.
An embodiment of the present application further provides an electronic device, where the electronic device includes a memory and a processor, where the memory is used to store a computer program, and the processor runs the computer program to enable the electronic device to execute the heat recovery method.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be implemented in other ways. The apparatus embodiments described above are merely illustrative, and for example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, functional modules in the embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Claims (12)

1. The heat recovery indirect evaporative cooling device is characterized by comprising an exhaust air heat exchanger, an air supply heat exchanger, a compressor, a four-way valve, a first throttling element, a second throttling element and a heat recovery assembly:
the outlet end of the compressor is connected with a first port of a four-way valve, a second port of the four-way valve comprises a first branch and a second branch, the first branch is connected with the exhaust heat exchanger through the first throttling element, and the exhaust heat exchanger is connected with a fourth end of the four-way valve;
the second branch is connected with the air supply heat exchanger through the second throttling element, and the air supply heat exchanger is connected with the inlet end of the compressor;
a third port of the four-way valve is connected with an inlet end of the compressor, and different heat recovery modes are operated by adjusting the opening states of a first port, a second port, a third port and a fourth port of the four-way valve;
and the heat recovery assembly is arranged on a pipeline between the compressor and the first port and used for recovering waste heat of the refrigerant output by the compressor in different heat recovery modes.
2. The heat recovery indirect evaporative cooling device of claim 1, wherein the heat recovery assembly comprises:
the heat recovery heat exchanger is connected with the outlet end of the compressor;
and the energy storage assembly is connected with the heat recovery heat exchanger and used for exchanging heat with a refrigerant passing through the heat recovery heat exchanger and storing the heat of the refrigerant.
3. The heat recovery indirect evaporative cooling device of claim 2, wherein the energy storage assembly comprises:
the water storage tank is connected with the inlet end of the heat recovery heat exchanger through a pipeline, and the outlet end of the heat recovery heat exchanger is connected with the inlet end of the water storage tank through the second water pump, so that the water in the water storage tank absorbs the heat of the refrigerant passing through the heat recovery heat exchanger.
4. The heat recovery indirect evaporative cooling device of claim 3, wherein the heat recovery assembly further comprises:
and the first end of the adjusting electromagnetic valve is connected with the outlet end of the heat recovery heat exchanger, and the second end of the adjusting electromagnetic valve is connected with the outlet end of the water storage tank and used for adjusting the water flow passing through the heat recovery heat exchanger.
5. The heat recovery indirect evaporative cooling device of claim 2, wherein the heat recovery mode comprises a high-load part heat recovery mode, and when operating the high-load part heat recovery mode:
the first port is in communication with the fourth port, and the second and third ports are closed.
6. The heat recovery indirect evaporative cooling device of claim 2, wherein the heat recovery mode comprises a low load high heat recovery mode, and when operating the low load high heat recovery mode:
the first port is in communication with the second port, and the fourth port is in communication with the third port.
7. The heat recovery indirect evaporative cooling device of claim 2, wherein the heat recovery mode comprises a high load high heat recovery mode, and when operating the high load high heat recovery mode:
the first port is communicated with the second port, and the fourth port is communicated with the third port;
the first throttling element is open and the second throttling element is closed, or the first throttling element is closed and the second throttling element is open.
8. The heat recovery indirect evaporative cooling device of claim 1, further comprising:
and the evaporative cooling assembly is used for adjusting the temperature of the return air in the room.
9. The heat recovery indirect evaporative cooling device of any one of claims 1-8, further comprising:
and the controller is connected with the four-way valve and used for controlling the communication states of four ports of the four-way valve so as to operate different heat recovery modes.
10. The heat recovery indirect evaporative cooling device of claim 1, wherein the device comprises:
the first end of the first electromagnetic valve is connected with the exhaust heat exchanger, and the second end of the first electromagnetic valve is connected with the outlet end of the compressor;
and the first end of the second electromagnetic valve is connected with the exhaust heat exchanger and is the same as the connecting end of the first electromagnetic valve, the second end of the second electromagnetic valve is connected with the inlet end of the compressor, and the second electromagnetic valve operates in different heat recovery modes by adjusting the opening and closing states of the first electromagnetic valve and the second electromagnetic valve.
11. A heat recovery method applied to a controller of the heat recovery indirect evaporative cooling device of claim 9, the method comprising:
determining load requirements according to the temperature difference between return water and outlet water of the compressor;
and adjusting the opening state of a port of the four-way valve based on the load requirement so as to enable the heat recovery indirect evaporative cooling device to operate in different heat recovery modes.
12. A readable storage medium having stored therein computer program instructions which, when read and executed by a processor, perform the heat recovery method of claim 11.
CN202210088769.8A 2022-01-25 2022-01-25 Heat recovery indirect evaporative cooling device and heat recovery method Pending CN114440355A (en)

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PCT/CN2023/071095 WO2023142980A1 (en) 2022-01-25 2023-01-06 Indirect evaporative cooling device having function of heat recovery, and heat recovery method

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