Multi-energy medium heat exchange device

Abstract

The utility model discloses a multi-energy medium heat exchange device, and belongs to the technical field of heating and ventilation. The device comprises a second medium circulating pipe; the outdoor heat exchanger is provided with an air channel, and the second medium circulating pipe penetrates through the air channel; the third medium circulating pipe penetrates through the second medium circulating pipe; the expansion valve is mounted on the second medium circulating pipe; the indoor heat exchanger is mounted on the second medium circulating pipe; the compressor is mounted on the second medium circulating pipe; the outdoor heat exchanger, the expansion valve, the indoor heat exchanger and the compressor are sequentially and circularly arranged on the second medium circulating pipe. The multi-energy medium heat exchange device is simple and reasonable in structural design, air energy and other renewable energy sources can be fully utilized, the heat exchange amount of the heat exchange device is guaranteed, and the heat exchange efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heating and ventilation, and in particular to a multi-energy medium heat exchange device. Background Art

[0002] Currently, devices that exchange heat between two media are widely used, such as air-source fin heat exchangers. This heat exchange device can only convert heat between two media. However, when the outdoor air temperature is high (low), the temperature difference between the refrigerant and the air decreases, affecting the heat exchange effect between the refrigerant and the air, and thus significantly reducing the operating energy efficiency of the air conditioner. If a third circulating medium is added to this device, when the heat exchange rate between the refrigerant and the air decreases, the third medium will exchange heat with the refrigerant, ensuring that the difference between the refrigerant's inlet temperature and the indoor heat exchanger's outlet temperature is maintained, thereby effectively improving the operating energy efficiency of the air conditioner. Utility Model Content

[0003] The purpose of the utility model is to provide a high-efficiency multi-energy medium heat exchange device.

[0004] In order to solve the above technical problems, the utility model provides a multi-energy medium heat exchange device, comprising:

[0005] The second medium circulation pipe;

[0006] The outdoor heat exchanger is provided with an air passage, and the second medium circulation pipe passes through the air passage;

[0007] a third medium circulation pipe passing through the second medium circulation pipe;

[0008] An expansion valve is installed on the second medium circulation pipe;

[0009] An indoor heat exchanger is installed on the second medium circulation pipe;

[0010] A compressor installed on the second medium circulation pipe;

[0011] The outdoor heat exchanger, expansion valve, indoor heat exchanger and compressor are sequentially arranged in a circular pattern on the second medium circulation pipe.

[0012] Preferably, the third medium circulation pipe passes through a portion of the second medium circulation pipe located in the air channel.

[0013] Preferably, the outdoor heat exchanger includes a plurality of fins;

[0014] The air passage is provided between adjacent fins.

[0015] Preferably, the diameter of the third medium circulation pipe is smaller than the diameter of the second medium circulation pipe;

[0016] The third medium circulation pipe passes through the middle of the second medium circulation pipe.

[0017] Preferably, the circulating medium in the third medium circulation pipe flows in the countercurrent direction to the circulating medium in the second medium circulation pipe.

[0018] Preferably, it further comprises a fan;

[0019] The fans are located around the outdoor heat exchanger and face the outside of the outdoor heat exchanger.

[0020] Preferably, a first medium flows through the air channel, and the first medium is air;

[0021] Preferably, the circulating medium in the second medium circulation pipe is a refrigerant;

[0022] Preferably, the circulating medium in the third medium circulation pipe is water.

[0023] Preferably, a third medium circulation pipe inlet and a third medium circulation pipe outlet are respectively provided at both ends of the third medium circulation pipe.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] The multi-energy medium heat exchange device of the utility model can perform heating and cooling. The outdoor heat exchanger and the indoor heat exchanger serve as an evaporator or a condenser respectively. When the outdoor temperature is high in summer or low in winter, the circulating medium in the third medium circulation pipe exchanges heat with the circulating medium in the second medium circulation pipe, so that the heat exchange amount of the circulating medium in the second medium circulation pipe in the outdoor heat exchanger is increased, thereby ensuring the heat exchange effect and improving the heat exchange efficiency.

[0026] The structural design of the multi-energy medium heat exchange device of the utility model is simple and reasonable, and can make full use of air energy and other renewable energy sources (such as geothermal energy, solar energy, low-temperature tail water, etc.), ensure the heat exchange capacity of the heat exchange device, and increase the heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The specific implementation of the present invention is further described in detail below with reference to the accompanying drawings.

[0028] Figure 1 This is a structural schematic diagram of a multi-energy medium heat exchange device of the utility model.

[0029] Figure 2 It is a cross-sectional view of the outdoor heat exchanger in the present utility model.

[0030] In the picture:

[0031] 1. Outdoor heat exchanger; 11. Fins; 2. Expansion valve; 3. Indoor heat exchanger; 4. Compressor; 5. Second medium circulation pipe; 6. Third medium circulation pipe; 61. Third medium circulation pipe inlet; 62. Third medium circulation pipe outlet. DETAILED DESCRIPTION

[0032] The following description sets forth many specific details to facilitate a thorough understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art can make similar generalizations without violating the scope of the present invention. Therefore, the present invention is not limited to the specific implementations disclosed below.

[0033] The terms used in one or more embodiments of this specification are for the purpose of describing specific embodiments only and are not intended to limit one or more embodiments of this specification. The singular forms "a," "the," and "the" used in one or more embodiments of this specification and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used in one or more embodiments of this specification refers to and includes any or all possible combinations of one or more associated listed items.

[0034] It should be understood that although the terms first, second, etc. may be used to describe various information in one or more embodiments of this specification, such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of one or more embodiments of this specification, the first may also be referred to as the second, and similarly, the second may also be referred to as the first. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0035] The present invention is described in further detail below with reference to the accompanying drawings:

[0036] The utility model provides a multi-energy medium heat exchange device, comprising:

[0037] Second medium circulation pipe 5;

[0038] The outdoor heat exchanger 1 is provided with an air passage, and the second medium circulation pipe 5 passes through the air passage;

[0039] A third medium circulation pipe 6 passing through the second medium circulation pipe 5;

[0040] An expansion valve 2 is installed on the second medium circulation pipe 5;

[0041] Indoor heat exchanger 3, which is installed on the second medium circulation pipe 5;

[0042] A compressor 4, which is installed on the second medium circulation pipe 5;

[0043] The outdoor heat exchanger 1 , the expansion valve 2 , the indoor heat exchanger 3 and the compressor 4 are sequentially arranged in a circular pattern on the second medium circulation pipe 5 .

[0044] Preferably, the third medium circulation pipe 6 passes through the portion of the second medium circulation pipe 5 located in the air channel.

[0045] Preferably, the outdoor heat exchanger 1 includes a plurality of fins 11;

[0046] The air passage is provided between adjacent fins 11 .

[0047] Preferably, the diameter of the third medium circulation pipe 6 is smaller than the diameter of the second medium circulation pipe 5;

[0048] The third medium circulation pipe 6 passes through the middle of the second medium circulation pipe 5 .

[0049] Preferably, the circulating medium in the third medium circulation pipe 6 and the circulating medium in the second medium circulation pipe 5 flow in the countercurrent direction.

[0050] Preferably, it further comprises a fan;

[0051] The fans are located around the outdoor heat exchanger 1 and face the outside of the outdoor heat exchanger 1 .

[0052] Preferably, a first medium flows through the air channel, and the first medium is air.

[0053] Preferably, the circulating medium in the second medium circulation pipe 5 is a refrigerant.

[0054] Preferably, the circulating medium in the third medium circulation pipe 6 is water.

[0055] Preferably, a third medium circulation pipe inlet 61 and a third medium circulation pipe outlet 62 are respectively provided at both ends of the third medium circulation pipe 6 .

[0056] The utility model also provides a heat exchange method of a multi-energy medium heat exchange device, comprising the following steps:

[0057] During heating, the outdoor heat exchanger 1 serves as an evaporator, and the indoor heat exchanger 3 serves as a condenser. The circulating medium in the second medium circulation pipe 5 passes through the outdoor heat exchanger 1 and becomes low-pressure, high-temperature gas. This is then converted to high-pressure, high-temperature gas by the compressor 4. This is converted to high-pressure, low-temperature liquid by the indoor heat exchanger 3. This is converted to a low-pressure, low-temperature gas-liquid two-phase mixture by the expansion valve 2 and enters the outdoor heat exchanger 1. The circulating medium in the third medium circulation pipe 6 absorbs heat from the heat source, ensuring a temperature difference between the third medium circulation pipe inlet 61 and the third medium circulation pipe outlet 62.

[0058] During cooling, the outdoor heat exchanger 1 is used as a condenser and the indoor heat exchanger 3 is used as an evaporator; the circulating medium in the second medium circulation pipe 5 passes through the outdoor heat exchanger 1 to become a high-pressure, low-temperature liquid, passes through the expansion valve 2 to become a low-pressure, low-temperature gas-liquid two-phase mixture, passes through the indoor heat exchanger 3 to become a low-pressure, high-temperature gas, passes through the compressor 4 to become a high-pressure, high-temperature gas and enters the outdoor heat exchanger 1; the circulating medium in the third medium circulation pipe 6 releases the heat in the third medium through the cold source, ensuring the temperature difference between the third medium circulation pipe inlet 61 and the third medium circulation pipe outlet 62.

[0059] Preferably, the heat source is solar energy, geothermal energy or low-temperature tail water;

[0060] The cold sources are geothermal energy and low-temperature tail water.

[0061] In order to better illustrate the technical effects of the present invention, the present invention provides the following specific embodiments to illustrate the above technical process:

[0062] Example 1: A multi-energy medium heat exchange device:

[0063] like Figure 1 As shown, the heat exchange device includes an outdoor heat exchanger 1, an expansion valve 2, an indoor heat exchanger 3, and a compressor 4. The outdoor heat exchanger includes a second medium circulation pipe 5, a third medium circulation pipe 6, and fins 11. The third medium circulation pipe 6 is placed in the second medium circulation pipe 5. One end of the third medium circulation pipe 6 is a third medium circulation pipe inlet 61, and the other end of the third medium circulation pipe 6 is a third medium circulation pipe outlet 62. The outdoor heat exchanger 1, expansion valve 2, indoor heat exchanger 3, and compressor 4 are connected in sequence.

[0064] In this embodiment, the first medium flowing through the channels between the fins 11 is air.

[0065] In this embodiment, the circulating medium in the second medium circulation pipe 5 is refrigerant.

[0066] In this embodiment, the circulating medium in the third medium circulation pipe 6 is water.

[0067] During heating, the outdoor heat exchanger 1 in this embodiment functions as an evaporator, and the indoor heat exchanger 3 functions as a condenser. The circulating medium in the second medium circulation pipe 5 is converted into a low-pressure, high-temperature gas through the outdoor heat exchanger 1, then into a high-pressure, high-temperature gas through the compressor 4. It then becomes a high-pressure, low-temperature liquid through the indoor heat exchanger 3, and finally into a low-pressure, low-temperature gas-liquid two-phase mixture through the expansion valve 2 before entering the outdoor heat exchanger 1. The circulating medium in the third medium circulation pipe 6 absorbs heat from a heat source (solar energy, geothermal energy, low-temperature tail water, etc.), maintaining a temperature differential between the third medium circulation pipe inlet 61 and the third medium circulation pipe outlet 62.

[0068] During cooling, the outdoor heat exchanger 1 in this embodiment functions as a condenser, and the indoor heat exchanger 3 functions as an evaporator. The circulating medium in the second medium circulation pipe 5 passes through the outdoor heat exchanger 1, becomes a high-pressure, low-temperature liquid, passes through the expansion valve 2, becomes a low-pressure, low-temperature gas-liquid two-phase mixture, passes through the indoor heat exchanger 3, becomes a low-pressure, high-temperature gas, and passes through the compressor 4, becoming a high-pressure, high-temperature gas before entering the outdoor heat exchanger 1. The circulating medium in the third medium circulation pipe 6 releases heat from the third medium via a cold source (geothermal energy, low-temperature tail water, etc.), maintaining a temperature differential between the third medium circulation pipe inlet 61 and the third medium circulation pipe outlet 62.

[0069] In this embodiment, air channels are formed between the fins 11 in the outdoor heat exchanger 1 . Air flowing through the air channels passes through the surface of the second medium circulation pipe 5 and exchanges heat with the circulating medium in the second medium circulation pipe 5 .

[0070] In this embodiment, the diameter of the third medium circulation pipe 6 is smaller than that of the second medium circulation pipe 5. The circulating medium in the third medium circulation pipe 6 and the circulating medium in the second medium circulation pipe 5 flow in opposite directions to each other, so that the circulating medium in the third medium circulation pipe 6 and the circulating medium in the second medium circulation pipe 5 can fully exchange heat, increase the heat exchange amount of the circulating medium in the second medium circulation pipe 5 in the outdoor heat exchanger 1, and improve the heat exchange efficiency.

[0071] When the outdoor temperature is high in summer, the temperature difference between the air in the air channel between the fins 11 and the circulating medium in the second medium circulation pipe 5 is small, and the heat exchange effect is weakened. The circulating medium in the third medium circulation pipe 6 exchanges heat with the circulating medium in the second medium circulation pipe 5, so that the heat exchange amount of the circulating medium in the second medium circulation pipe 5 in the outdoor heat exchanger 1 is increased, thereby ensuring the heat exchange effect and improving the heat exchange efficiency.

[0072] When the outdoor temperature is low in winter, the temperature difference between the air in the air channel between the fins 11 and the circulating medium in the second medium circulation pipe 5 is small, and even frost is formed on the outer surface of the second medium circulation pipe 5, which weakens the heat exchange effect. The circulating medium in the third medium circulation pipe 6 exchanges heat with the circulating medium in the second medium circulation pipe 5, so that the heat exchange amount of the circulating medium in the second medium circulation pipe 5 in the outdoor heat exchanger 1 is increased, thereby ensuring the heat exchange effect and improving the heat exchange efficiency.

[0073] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present invention shall be covered by the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope of protection of the claims.

Claims

1. A multi-energy medium heat exchange device, characterized in that: include: A second medium circulation pipe (5); An outdoor heat exchanger (1) is provided with an air passage, and the second medium circulation pipe (5) passes through the air passage; a third medium circulation pipe (6) passing through the second medium circulation pipe (5); an expansion valve (2) mounted on the second medium circulation pipe (5); an indoor heat exchanger (3) mounted on the second medium circulation pipe (5); A compressor (4) mounted on the second medium circulation pipe (5); The outdoor heat exchanger (1), the expansion valve (2), the indoor heat exchanger (3) and the compressor (4) are sequentially arranged in a circular manner on the second medium circulation pipe (5).

2. The multi-energy medium heat exchange device according to claim 1, characterized in that: The third medium circulation pipe (6) passes through the portion of the second medium circulation pipe (5) located in the air channel.

3. The multi-energy medium heat exchange device according to claim 2, characterized in that: The outdoor heat exchanger (1) comprises a plurality of fins (11); The air passage is arranged between adjacent fins (11).

4. The multi-energy medium heat exchange device according to claim 3, characterized in that: The diameter of the third medium circulation pipe (6) is smaller than the diameter of the second medium circulation pipe (5); The third medium circulation pipe (6) passes through the middle of the second medium circulation pipe (5).

5. The multi-energy medium heat exchange device according to claim 4, characterized in that: The circulating medium in the third medium circulation pipe (6) and the circulating medium in the second medium circulation pipe (5) flow in the opposite direction.

6. The multi-energy medium heat exchange device according to claim 5, characterized in that: Also includes a fan; The fans are located around the outdoor heat exchanger (1) and face the outside of the outdoor heat exchanger (1).

7. The multi-energy medium heat exchange device according to claim 6, characterized in that: A first medium flows through the air channel, and the first medium is air.

8. The multi-energy medium heat exchange device according to claim 7, characterized in that: The circulating medium in the second medium circulation pipe (5) is a refrigerant.

9. The multi-energy medium heat exchange device according to claim 8, characterized in that: The circulating medium in the third medium circulation pipe (6) is water.

10. The multi-energy medium heat exchange device according to claim 9, characterized in that: The third medium circulation pipe (6) is provided with a third medium circulation pipe inlet (61) and a third medium circulation pipe outlet (62) at both ends thereof.

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