Heat pipe heat exchanger

Abstract

The utility model discloses a heat pipe heat exchanger which comprises a hot flow channel and at least two cold flow channels, a partition plate is arranged between the hot flow channel and the cold flow channels, a plurality of heat pipes are inserted in the partition plate in a penetrating mode, evaporation sections of the heat pipes are located in the hot flow channel, and condensation sections of the heat pipes are located in the cold flow channels. The cold flow channel is provided with a refrigerant inlet and a refrigerant outlet, and the refrigerant inlet and the refrigerant outlet are both perpendicular to the flow direction of the hot flow channel. The directions of the refrigerant inlet and the refrigerant outlet of the cold flow channel are perpendicular to the circulation direction of the hot flow channel, so that the overall length of the equipment can be greatly reduced, the flow resistance loss of a heating medium is reduced, and the practicability of the equipment is improved. In addition, the refrigerant inlet and the refrigerant outlet are arranged on the same side or different sides, so that the applicability of the equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchangers, in particular to a heat pipe heat exchanger. Background Art

[0002] Heat pipe heat exchanger is a kind of high-efficiency heat transfer equipment that uses heat pipe as heat transfer element. Its working principle is: the working fluid inside the heat pipe will boil or evaporate after being heated, absorb the heat from the external heat source, and change from liquid to steam. The generated steam flows to the condensation section under the action of a certain pressure difference in the tube. The steam encounters the cold wall surface and the external cold source in the condensation section, condenses into liquid, and releases the latent heat of vaporization, and transfers it to the external cold source through the tube wall. The condensate flows back to the evaporation section under the action of gravity (or liquid absorption core), and the cycle repeats. Heat pipe heat exchanger has the advantages of high heat transfer efficiency, compact structure, and small pressure loss. It is widely used in metallurgy, chemical industry, oil refining, boiler, ceramics, transportation, textile, machinery and other industries.

[0003] In order to improve the utilization efficiency of the heat source, multiple cold flow channels are often connected to the hot flow channel of the heat pipe heat exchanger. However, the inlet directions of the multiple cold flow channels of the existing heat pipe heat exchanger are in the same direction, which requires the outlet to be bent. Since the cold flow pipeline has a large diameter and a large turning radius, the entire heat exchanger occupies a large volume, and the pipeline of the lower hot flow channel is longer, resulting in a large flow resistance loss.

[0004] Based on the above technical problems, the present application proposes a heat pipe heat exchanger. Utility Model Content

[0005] The purpose of the utility model is to provide a heat pipe heat exchanger to solve the technical problems mentioned in the background technology. The purpose of the utility model is achieved through the following technical solutions:

[0006] A heat pipe heat exchanger comprises a hot flow channel and a cold flow channel, a partition is arranged between the hot flow channel and the cold flow channel, a plurality of heat pipes are inserted on the partition, the evaporation section of the heat pipe is located in the hot flow channel, the condensation section of the heat pipe is located in the cold flow channel, there are at least two cold flow channels, a refrigerant inlet and a refrigerant outlet are arranged on the cold flow channel, and the refrigerant inlet and the refrigerant outlet are both perpendicular to the flow direction of the hot flow channel.

[0007] Furthermore, the refrigerant inlet and the refrigerant outlet are respectively arranged on both sides of the cold flow channel.

[0008] Furthermore, the refrigerant inlet and the refrigerant outlet are arranged on the same side of the cold flow channel.

[0009] Furthermore, the heat pipe comprises a heat pipe body, a capillary structure and a working fluid, the capillary structure is fixed on the inner wall surface of the heat pipe body, and the working fluid is filled in the heat pipe body.

[0010] The technical solution provided in the embodiments of the present application has at least the following technical effects or advantages:

[0011] By arranging the refrigerant inlet and outlet of the cold flow channel perpendicular to the flow direction of the hot flow channel, the overall length of the equipment can be greatly reduced, the flow resistance loss of the heat medium can be reduced, and the practicality of the equipment can be improved. In addition, by arranging the refrigerant inlet and outlet on the same side or on different sides, the applicability of the equipment is also improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The drawings in the specification, which constitute a part of the present application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0013] Figure 1 This is the main view of Example 1 of the present application;

[0014] Figure 2 This is a top view of Example 1 of the present application;

[0015] Figure 3 This is a schematic diagram of the heat pipe installation of the embodiment of the present application;

[0016] Figure 4 This is a schematic diagram of the heat pipe structure of an embodiment of the present application;

[0017] Figure 5 This is the main view of Example 2 of the present application;

[0018] Figure 6 This is a top view of Example 2 of the present application;

[0019] Figure 7 This is the main view of Example 3 of the present application;

[0020] Figure 8 This is a top view of Example 3 of the present application.

[0021] Markings in the attached figure: 1. hot flow channel; 11. heat medium inlet; 12. heat medium outlet; 2. cold flow channel; 21. refrigerant inlet; 22. refrigerant outlet; 3. partition; 4. heat pipe; 41. heat pipe body; 42. capillary structure; 43. working fluid; 44. cavity. DETAILED DESCRIPTION

[0022] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the drawings and specific implementation methods of the specification. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0023] Example 1

[0024] like Figure 1 , Figure 2 A heat pipe heat exchanger shown includes a hot flow channel 1 and two cold flow channels 2. The hot flow channel 1 is a rectangular shell welded from carbon steel, stainless steel or aluminum alloy, a heat medium inlet 11 is installed at the left end of the hot flow channel 1, and a heat medium outlet 12 is installed at the right end of the hot flow channel 1. The heat medium outlet 12 is coaxially installed with the heat medium inlet 11, so that the heat medium flows through the hot flow channel 1 from left to right.

[0025] like Figure 1 , Figure 2 As shown, the cold flow channel 2 is a rectangular shell welded from carbon steel, stainless steel or aluminum alloy, and two cold flow channels 2 are installed in parallel at the top of the hot flow channel 1. A refrigerant inlet 21 is installed at the front end of the cold flow channel 2, and a refrigerant outlet 22 is installed at the rear end of the cold flow channel 2. The refrigerant outlet 22 is installed coaxially with the refrigerant inlet 21, so that the refrigerant flows from front to back through the cold flow channel 2. Among them, the installation positions of the refrigerant inlet 21 and the refrigerant outlet 22 of the cold flow channel 2 can also be swapped to meet different on-site requirements.

[0026] like Figure 3 As shown, a partition 3 is installed between the top of the hot flow channel 1 and the bottom of the cold flow channel 2. A plurality of heat pipe mounting holes are evenly opened on the partition 3, and each heat pipe mounting hole is inserted with a heat pipe 4. The evaporation section of the heat pipe 4 is located in the hot flow channel 1, and the condensation section of the heat pipe 4 is located in the cold flow channel 2.

[0027] like Figure 4 As shown, the heat pipe 4 includes a heat pipe body 41, a capillary structure 42 and a working fluid 43. The heat pipe body 41 is a tubular structure with both ends closed. The capillary structure 42 is fixed on the inner wall surface of the heat pipe body 41 to form a cavity 44 in the middle of the heat pipe body 41. The working fluid 43 is filled in the heat pipe body 41.

[0028] The working principle of the heat pipe 4 is as follows: when the heat medium flows through the hot flow channel 1, the working fluid 43 inside the heat pipe 4 will boil or evaporate after being heated, absorb heat from the external heat source, and change from liquid to steam. The generated steam rises to the condensation section of the heat pipe 4 under the action of the pressure difference inside the heat pipe 4. The refrigerant flowing through the cold flow channel 2 cools the condensation section of the heat pipe 4, so that the steam generated by the working fluid 43 condenses into liquid in the condensation section, while releasing the latent heat of vaporization, and transfers the latent heat of vaporization to the refrigerant through the heat pipe body 41, thereby heating the refrigerant. The condensed working fluid 43 flows back to the evaporation section under the action of gravity or the capillary structure 42, and evaporates again, and the cycle repeats in this way, thereby realizing the temperature exchange between the hot flow channel 1 and the cold flow channel 2.

[0029] Example 2

[0030] like Figure 5 , Figure 6 As shown, the technical solution of Example 2 is exactly the same as that of Example 1, and the only difference is that:

[0031] The refrigerant inlet 21 and the refrigerant outlet 22 of the two cold flow channels 2 are both installed on the front side of the cold flow channel 2. A partition (not shown) is installed between the refrigerant inlet 21 and the refrigerant outlet 22. The partition divides the cold flow channel 2 into a U-shaped flow channel, thereby increasing the time the refrigerant flows through the cold flow channel 2 and increasing the heat exchange efficiency.

[0032] Example 3

[0033] like Figure 7 , Figure 8 As shown, the technical solution of Example 3 is exactly the same as that of Example 2, and the only difference is that:

[0034] The refrigerant inlet 21 and the refrigerant outlet 22 of the left cold flow channel 2 are both installed at the front side of the cold flow channel 2, and the refrigerant inlet 21 and the refrigerant outlet 22 of the right cold flow channel 2 are both installed at the rear side of the cold flow channel 2. By staggering the refrigerant inlets 21 and the refrigerant outlets 22 of the two cold flow channels 2, the layout of the pipelines can be facilitated and the applicability of the equipment can be improved.

[0035] The technical solution provided in the embodiments of the present application has at least the following technical effects or advantages:

[0036] By arranging the refrigerant inlet and outlet of the cold flow channel perpendicular to the flow direction of the hot flow channel, the overall length of the equipment can be greatly reduced, the flow resistance loss of the heat medium can be reduced, and the practicality of the equipment can be improved. In addition, by arranging the refrigerant inlet and outlet on the same side or on different sides, the applicability of the equipment is also improved.

[0037] In addition, as a preferred embodiment of the present application, the partition 3 is disc-shaped, and a circle of mounting holes is provided on the outer circumference of the partition 3. A circular through hole is provided at the bottom of the cold flow channel 2, and the heat pipe 4 passes through the through hole and is accommodated in the cold flow channel 2. Connecting holes corresponding to the mounting holes are provided on the outer side of the through hole. By matching different mounting holes with the connecting holes, the angle of the cold flow channel 2 can be adjusted to meet different on-site installation requirements.

[0038] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise stated, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present utility model: the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0039] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A heat pipe heat exchanger, comprising a hot flow channel and a cold flow channel, wherein a partition is provided between the hot flow channel and the cold flow channel, wherein a plurality of heat pipes are inserted through the partition, wherein the evaporation section of the heat pipe is located in the hot flow channel, and the condensation section of the heat pipe is located in the cold flow channel, wherein: There are at least two cold flow channels, and a refrigerant inlet and a refrigerant outlet are provided on the cold flow channel. The refrigerant inlet and the refrigerant outlet are both perpendicular to the flow direction of the hot flow channel.

2. A heat pipe heat exchanger according to claim 1, characterized in that: The refrigerant inlet and the refrigerant outlet are respectively arranged on both sides of the cold flow channel.

3. The heat pipe heat exchanger according to claim 1, characterized in that: The refrigerant inlet and the refrigerant outlet are arranged on the same side of the cold flow channel.

4. The heat pipe heat exchanger according to claim 1, characterized in that: The heat pipe comprises a heat pipe body, a capillary structure and a working fluid. The capillary structure is fixed on the inner wall surface of the heat pipe body, and the working fluid is filled in the heat pipe body.

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