CN221223037U

CN221223037U - Heat exchange equipment

Info

Publication number: CN221223037U
Application number: CN202322888281.6U
Authority: CN
Inventors: 胡雅玲
Original assignee: Shanghai Yaoran Energy Conservation Technology Co ltd
Current assignee: Shanghai Yaoran Energy Conservation Technology Co ltd
Priority date: 2023-10-26
Filing date: 2023-10-26
Publication date: 2024-06-25
Anticipated expiration: 2033-10-26

Abstract

The application relates to heat exchange equipment, and belongs to the technical field of heat exchange. The application comprises the following steps: the evaporator, the condenser, the compressor and the expansion valve which are sequentially connected to form a loop are also connected in parallel with a finned tube through a first switch module; the condenser is connected with a cooling tower in parallel through a second switch module. The device helps to solve the problem that in the prior art, a unit for extracting heat or cold from a single energy system cannot achieve the effect of high efficiency and energy saving during refrigeration and heating.

Description

Heat exchange equipment

Technical Field

The application belongs to the technical field of heat exchange, and particularly relates to heat exchange equipment.

Background

At present, most heat pump units are in a single mode in the refrigerating or heating process, for example, one of a finned tube, a cooling tower or a ground source (water source) well is used as an energy extraction mode, and heat in winter or cold in summer is extracted from a single energy system.

For example, when the air-cooled heat pump unit uses the finned tube for heat exchange, the finned tube has the advantage of high efficiency and energy saving during heating in winter, but in summer, the efficiency cannot be fully exerted when the finned tube is used for heat dissipation. When the cooling tower is used for heat dissipation, the cooling tower has the advantages of high efficiency and energy saving in summer refrigeration, but the heat exchange capacity is lower in winter heating, and the requirements cannot be met. The unit for extracting heat or cold from a single energy system cannot achieve the effects of high efficiency and energy saving during refrigeration and heating.

Disclosure of utility model

Therefore, the application provides the heat exchange equipment, which is helpful to solve the problems that the unit for extracting heat or cold from a single energy system in the prior art cannot achieve the effect of high efficiency and energy saving during refrigeration and heating.

In order to achieve the above purpose, the application adopts the following technical scheme:

in a first aspect, the present application provides a heat exchange apparatus comprising:

An evaporator, a condenser, a compressor and an expansion valve which are sequentially connected to form a loop,

The evaporator is also connected with a finned tube in parallel through a first switch module;

the condenser is connected with a cooling tower in parallel through a second switch module.

Preferably, the second switch module comprises at least two valves at two ends of the cooling tower, and the valves are used for controlling the second switch module to be connected or disconnected.

Preferably, the first switch module comprises at least four valves, two of which are located at both ends of the evaporator and two of which are located at both ends of the finned tube for controlling the evaporator or the finned tube to communicate.

Preferably, the cooling tower is connected when the two valves of the second switch module are opened, and disconnected when the two valves of the second switch module are closed.

Preferably, the first switch module is in a first state when valves at both ends of the evaporator in the first switch module are opened and valves at both ends of the fin tube are closed;

When the first switch module is in the first state, the evaporator is in communication with the compressor and the expansion valve;

when valves at two ends of the fin tube in the first switch module are opened and valves at two ends of the evaporator are closed, the first switch module is in a second state;

the finned tube communicates with the compressor and the expansion valve when the first switch module is in the second state.

Preferably, the heat exchange apparatus further comprises an indoor unit connected to a circuit formed by the evaporator, the condenser, the compressor and the expansion valve through a third switching module.

Preferably, the third switch module includes four valves, two of which are located between the indoor unit and the condenser, and two of which are located between the indoor unit and the evaporator.

Preferably, when a valve between the indoor unit and the condenser in the third switch module is opened and a valve between the indoor unit and the evaporator is closed, the indoor unit is communicated with the condenser;

And when a valve between the indoor unit and the evaporator in the third switch module is opened and a valve between the indoor unit and the condenser is closed, the indoor unit is communicated with the evaporator.

Preferably, the cooling tower is a closed energy tower.

Preferably, the finned tube is an evaporative finned tube.

The application adopts the technical proposal and has at least the following beneficial effects:

The evaporator, the condenser, the compressor and the expansion valve which are sequentially connected to form a loop are connected in parallel through the first switch module, and the first switch module can control the communication of the evaporator or the finned tube, so that when heating is needed in winter, the first switch module can control the finned tube to be connected with the loop, thereby heating the indoor side, saving heating energy consumption and fully improving the utilization rate of renewable energy sources; the condenser is connected with the cooling tower in parallel through the second switch module, and can be connected with the loop through the second switch module control cooling tower when refrigeration is needed in summer, the condenser and the cooling tower are adopted for indoor side heat dissipation simultaneously, thereby air heat can be extracted, refrigeration energy consumption is saved, thereby the condenser can help to solve the problem that a unit for extracting heat or cold from a single energy system cannot achieve the effect of high efficiency and energy conservation during refrigeration and heating, the condenser and the cooling tower are adopted for indoor side heat dissipation simultaneously in summer, refrigeration energy consumption is saved, the evaporative finned tube is adopted for indoor side heating in winter, heating energy consumption is saved, renewable energy utilization rate is fully improved, and the effect of saving cost is achieved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application as claimed.

Drawings

In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a block diagram of a heat exchange apparatus according to one embodiment of the present application;

Reference numerals illustrate:

The cooling system comprises a 1-cooling tower, a 2-condenser, a 3-compressor, a 4-evaporator, 5-finned tubes, a 6-expansion valve, a 7-indoor unit, an 8-first switch module, a 9-second switch module and a 10-third switch module.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. All other embodiments, based on the examples herein, which are within the scope of the application as defined by the claims, will be within the scope of the application as defined by the claims.

Referring to fig. 1, fig. 1 is a structural diagram of a heat exchange device according to an embodiment of the present application, where the heat exchange device includes:

Specifically, the heat exchange device is used for cooling or heating, heating in winter and cooling in summer. The basic component parts of the heat exchange equipment comprise four parts of a compressor 3, an evaporator 4, an expansion valve 6 and a condenser 2, and the four parts are sequentially and circularly connected to form a loop which is used as a heat pump unit. The heat exchange device further comprises a finned tube 5 and a cooling tower 1. Wherein the cooling tower 1 is connected in parallel with the condenser 2 through the second switch module 9 and then connected into a loop. The finned tube 5 is connected in parallel with the evaporator 4 through a first switch module 8 and then connected into a loop. The first switch module 8 is used for controlling whether the finned tube 5 is communicated with the evaporator 4 in parallel or not, and the second switch module 9 is used for controlling whether the cooling tower 1 is communicated with the condenser 2 in parallel or not.

The evaporator 4 in the circuit may be a plate-type brazing evaporator, or may be another evaporator having high heat transfer efficiency, and the present application is not particularly limited.

When refrigeration is required, the first step in the circulation of the heat exchange device circuit is to heat the refrigerant in the evaporator 4, change the refrigerant from liquid to gaseous and absorb heat from the surrounding environment (room). At this time, the compressor 3 starts to operate, pressurizes the refrigerant to raise the temperature, and the high-temperature and high-pressure gas is compressed into a high-pressure hot gas by the compressor 3. Then, when the high-pressure hot gas passes through the condenser 2, heat contained in the hot gas is released by heat transfer, and the refrigerant is cooled to a high-pressure liquid state. Finally, the high-pressure liquid refrigerant is depressurized to a low-pressure liquid refrigerant through the expansion valve 6, at which time the temperature and pressure of the refrigerant are reduced, and the refrigerant enters the evaporator 4 to be circulated again, thereby forming a circulating refrigeration system.

The fin tube works on the principle that the refrigerant absorbs heat in the air during evaporation, so that the temperature of the air is reduced, and the efficiency of the fin tube cannot be fully exerted in the refrigeration process. Therefore, during refrigeration, the first switch module 8 controls the finned tube 5 to be not communicated with the evaporator 4, the finned tube 5 does not enter the loop and does not work, the second switch module 9 controls the cooling tower 1 to be communicated with the condenser 2, two ends of the cooling tower 1 are connected with two ends of the condenser 2 in parallel and enter the loop to work, one end of the cooling tower is a water inlet, and the other end of the cooling tower is a water outlet. Circulating water flows into a water inlet of the cooling tower from the loop, is sprayed on the filler in the cooling tower through the spraying device, forms a water film on the filler, and is evaporated in the cooling tower through the contact of the filler and air, so that heat in the air is absorbed, and the water temperature is reduced. The cooled water flows back to the loop from the water outlet of the cooling tower to form circulation for cooling in a circulation and reciprocation mode. Therefore, the energy tower and the loop form two sets of water circulation systems, and the energy tower exchanges heat with the condenser in the loop, so that the energy consumption of heat exchange equipment is reduced, and the circulating water is pollution-free, energy-saving and environment-friendly. Meanwhile, a fan or a blower fan is arranged at the top of the cooling tower and used for exhausting hot and humid air out of the tower, so that the cooling effect is ensured.

When heating is needed, the first switch module 8 controls the finned tube 5 to be communicated, the finned tube 5 enters a loop, the evaporator 4 is not communicated, the evaporator 4 is not operated, the second switch module 9 controls the cooling tower 1 to be not communicated, and the cooling tower 1 is not operated. At this time, the fin tubes 5 are filled with a low temperature refrigerant, and when the outdoor air passes through the fin tubes 5, the refrigerant absorbs heat in the air, thereby changing the refrigerant into a low temperature and low pressure gas state. Then, the refrigerant is compressed into a high-temperature high-pressure gas state by the compressor 3, then high-grade heat is emitted by the condenser 2, and finally the refrigerant is depressurized by the expansion valve 6 and returned to the fin tube 5, thereby forming a cycle, and heating is performed. Because the finned tube 5 is adopted for heating during heating, compared with the evaporator 4, the heat transfer area of the gas side can be increased, the turbulence degree of the gas is enhanced, the thermal resistance of the gas side is reduced, so that the heat transfer coefficient of the gas is improved, and when the refrigerant exchanges heat with the air through the finned tube 5, the temperature difference between the refrigerant and the outdoor temperature is large in winter, the finned tube 5 extracts the heat of the air, the automatic defrosting function is realized, the heat exchange efficiency can be prevented from being influenced by frost, and the energy conservation and the efficiency are improved. In addition, although the energy tower can be more efficient and energy-saving during refrigeration, the heat exchange amount is lower during heating, and the requirements cannot be met.

It can be understood that the evaporator, the condenser, the compressor and the expansion valve which are sequentially connected to form a loop are provided by the embodiment, the evaporator is also connected with the finned tube in parallel through the first switch module, and the first switch module can control the evaporator or the finned tube to be communicated, so that when heating is needed in winter, the first switch module can control the finned tube to be connected into the loop for indoor heating, thereby saving heating energy consumption and fully improving the utilization rate of renewable energy sources; the condenser is connected with the cooling tower in parallel through the second switch module, and can be connected with the loop through the second switch module control cooling tower when refrigeration is needed in summer, the condenser and the cooling tower are adopted for indoor side heat dissipation simultaneously, thereby air heat can be extracted, refrigeration energy consumption is saved, thereby the condenser can help to solve the problem that a unit for extracting heat or cold from a single energy system cannot achieve the effect of high efficiency and energy conservation during refrigeration and heating, the condenser and the cooling tower are adopted for indoor side heat dissipation simultaneously in summer, refrigeration energy consumption is saved, the evaporative finned tube is adopted for indoor side heating in winter, heating energy consumption is saved, renewable energy utilization rate is fully improved, and the effect of saving cost is achieved.

Specifically, the second switch module 9 includes at least two valves at both ends of the cooling tower 2, as shown in fig. 1, 9# and 10# valves, which can be used to control the connection or disconnection of the second switch module 9.

In this embodiment, the manner of the adhesive and the material of the fastener are not particularly limited.

Specifically, the first switch module 8 includes at least four valves, two of which are located at both ends of the evaporator 4, and the 5# and 6# valves; two valves are located at both ends of the finned tube 5, 7# and 8# valves. The valves 5# and 6# can control the connection or disconnection of the evaporator 4, and the valves 7# and 8# can control the connection or disconnection of the finned tube 5.

Specifically, when the two valves 9# and 10# in the second switch module 9 are opened, the cooling tower 1 is communicated, the access loop and the heat pump unit can perform heat exchange, and when in refrigeration, the two valves 9# and 10# can work, so that the refrigeration effect is increased. When the 9# valve and the 10# valve are closed, the cooling tower 1 is disconnected and is not connected into a loop, and the cooling tower does not participate in work and cannot exchange heat with the heat pump unit during heating, so that resources can be saved.

Specifically, the first switch module 8 is in the first state when the valves # 5 and # 6 at both ends of the evaporator 4 in the first switch module 8 are opened, and the valves # 7 and # 8 at both ends of the fin tube 5 are closed at the same time.

When the first switch module 8 is in said first state, the evaporator 4 is in communication with the compressor 3 and the expansion valve 6, at which time the evaporator 4 is in operation, being connected into the circuit. The finned tube 5 is disconnected from both the compressor 3 and the expansion valve 6, and at this time, the finned tube 5 is not operated and is not connected to the circuit.

The first switch module 8 is in the second state when the 7# and 8# valves at both ends of the fin tube 5 of the first switch module 8 are opened and the 5# and 6# valves at both ends of the evaporator 4 are closed at the same time.

When the first switch module 8 is in said second state, the finned tube 5 is in communication with the compressor 3 and the expansion valve 6, at which time the finned tube 5 is operated, being connected into the circuit. The evaporator 4 is disconnected from both the compressor 3 and the expansion valve 6, and at this time the evaporator 4 is not operating and is not connected to the circuit.

Specifically, the heat exchange apparatus further includes an indoor unit 7, and the indoor unit 7 is connected to a circuit formed by the evaporator 4, the condenser 2, the compressor 3 and the expansion valve 6, that is, to the heat pump unit, through a third switching module 10.

Wherein the third switch module 10 is used for controlling the connection or disconnection of the indoor unit 7 with the condenser 2 side and the evaporator 4 side.

In the cooling process in summer, the side of the outdoor condenser 2 is a heat exchanger, and heat is discharged by means of outdoor "wind" cooling, and at this time, the third switch module 10 controls the indoor unit 7 to communicate with the side of the evaporator 4.

In the heating process in winter, the outdoor evaporator 4 side is used as a heat exchanger, and outdoor air is used as a low-temperature heat source to heat the outdoor air, and at this time, the third switch module 10 controls the indoor unit 7 to communicate with the condenser 4 side.

Specifically, the third switch module 10 includes four valves, two of which are located between the indoor unit 7 and the condenser 2, and the 1# and 2# valves may be used to control the connection or disconnection between the indoor unit 7 and the condenser 2; two valves are located between the indoor unit 7 and the evaporator 4, and the 3# and 4# valves can be used to control the connection or disconnection of the indoor unit 7 and the evaporator 4.

Specifically, when heating is required, the valves 1# and 2# between the indoor unit 7 and the condenser 2 in the third switch module 10 are opened, and the valves 3# and 4# between the indoor unit 7 and the evaporator 4 are closed at the same time, the indoor unit 7 communicates with the condenser 2.

When cooling is required, the 3# and 4# valves of the third switch module 10 between the indoor unit 7 and the evaporator 4 are opened, and at the same time, the 1# and 2# valves between the indoor unit 7 and the condenser 2 are closed, and the indoor unit 7 communicates with the evaporator 4.

In a specific example, when cooling is performed, as shown in fig. 1, the 1# and 2# valves are closed, the 3# and 4# valves are opened, the 5# and 6# valves are opened, the 7# and 8# valves are closed, and the 9# and 10# valves are opened, so that the cooling tower 1 is operated, the evaporator 4 is operated, the fin tube 5 is not operated, and the indoor unit 7 is connected to the evaporator 4.

When heating is performed, the 1# and 2# valves are opened, the 3# and 4# valves are closed, the 5# and 6# valves are closed, the 7# and 8# valves are opened, and the 9# and 10# valves are closed, so that the cooling tower 1 does not work, the evaporator 4 does not work, the fin tube 5 works, and the indoor unit 7 is connected with the condenser 2.

Preferably, the cooling tower is a closed energy tower.

Specifically, the cooling tower 1 is a closed energy tower, and during refrigeration, the closed energy tower adopts circulating water to exchange heat with the condenser 2 of the heat pump unit in the loop, and independent circulating water in the closed energy tower is sprayed for cooling, so that two sets of water circulation systems work, and the closed energy tower exchanges heat with the heat pump unit, so that the energy consumption of the heat pump unit in the loop can be reduced, the circulating water is pollution-free, and the environment-friendly and energy-saving effects are achieved.

Preferably, the finned tube is an evaporative finned tube.

Specifically, the fin tube 5 is an evaporation type fin tube, and when the evaporation type fin tube works, refrigerant exchanges heat with air through the evaporation type fin tube, and because the temperature difference between the refrigerant and the outdoor temperature is large in winter, the heat of the outdoor air can be extracted by utilizing the evaporation type fin tube for heating requirements, and the evaporator has an automatic defrosting function, so that the condition of influencing the heat exchange efficiency caused by frost can be prevented.

It is to be understood that the same or similar parts in the above embodiments may be referred to each other, and that in some embodiments, the same or similar parts in other embodiments may be referred to.

It should be noted that in the description of the present application, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, in the description of the present application, unless otherwise indicated, the meaning of "plurality", "multiple" means at least two.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present; when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present, and further, as used herein, connection may comprise a wireless connection; the use of the term "and/or" includes any and all combinations of one or more of the associated listed items.

Any process or method description in a flowchart or otherwise described herein may be understood as: means, segments, or portions of code representing executable instructions including one or more steps for implementing specific logical functions or processes are included in the preferred embodiment of the present application in which functions may be executed out of order from that shown or discussed, including in a substantially simultaneous manner or in an inverse order, depending upon the function involved, as would be understood by those skilled in the art of embodiments of the present application.

It is to be understood that portions of the present application may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, the various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, may be implemented using any one or combination of the following techniques, as is well known in the art: discrete logic circuits having logic gates for implementing logic functions on data signals, application specific integrated circuits having suitable combinational logic gates, programmable Gate Arrays (PGAs), field Programmable Gate Arrays (FPGAs), and the like.

Those of ordinary skill in the art will appreciate that all or a portion of the steps carried out in the method of the above-described embodiments may be implemented by a program to instruct related hardware, where the program may be stored in a computer readable storage medium, and where the program, when executed, includes one or a combination of the steps of the method embodiments.

In addition, each functional unit in the embodiments of the present application may be integrated in one processing module, or each unit may exist alone physically, or two or more units may be integrated in one module. The integrated modules may be implemented in hardware or in software functional modules. The integrated modules may also be stored in a computer readable storage medium if implemented in the form of software functional modules and sold or used as a stand-alone product.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present application have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the application, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the application.

Claims

1. A heat exchange apparatus, comprising:

2. The heat exchange apparatus according to claim 1, wherein the second switch module includes at least two valves at both ends of the cooling tower for controlling the second switch module to be turned on or off.

3. The heat exchange apparatus according to claim 1, wherein the first switch module comprises at least four valves, two of which are located at both ends of the evaporator and two of which are located at both ends of the finned tube for controlling the evaporator or the finned tube to communicate.

4. The heat exchange device of claim 2, wherein the cooling tower is on when both valves of the second switch module are open and is off when both valves of the second switch module are closed.

5. A heat exchange apparatus according to claim 3 wherein the first switch module is in a first state when the valves at both ends of the evaporator in the first switch module are open and the valves at both ends of the finned tube are closed;

6. The heat exchange apparatus according to claim 1, further comprising an indoor unit connected to a circuit formed by the evaporator, condenser, compressor and expansion valve through a third switching module.

7. The heat exchange apparatus of claim 6 wherein the third switch module comprises four valves, two of which are located between the indoor unit and the condenser and two of which are located between the indoor unit and the evaporator.

8. The heat exchange apparatus according to claim 7, wherein the indoor unit is in communication with the condenser when a valve between the indoor unit and the condenser in the third switching module is opened and a valve between the indoor unit and the evaporator is closed;

9. The heat exchange apparatus of claim 1 wherein the cooling tower is a closed energy tower.

10. The heat exchange apparatus according to claim 1, wherein the finned tube is an evaporative finned tube.