CN222733420U - Gravity heat pipe heat exchanger - Google Patents

Abstract

The utility model provides a gravity heat pipe heat exchanger, which belongs to the technical field of heat exchangers, including a first channel for a first heat exchange medium to flow, and a second channel for a second heat exchange medium to flow; a plurality of gravity heat pipes are connected between the first channel and the second channel; a part of each gravity heat pipe is located in the first channel, and a part is located in the second channel; a plurality of guide plates are arranged in the first channel, dividing the first channel into a plurality of guide compartments, and two adjacent guide compartments are connected; the direction of flow of the first heat exchange medium in each guide compartment is perpendicular to the direction of flow of the second heat exchange medium in the second channel, and the directions of flow of the first heat exchange medium in two adjacent guide compartments are opposite. The utility model can make the heat exchange between the heat exchange medium and the gravity heat pipe more sufficient, improve the heat exchange effect; increase the flow distance of the heat exchange medium, extend the effective heat exchange time between the heat exchange medium and the gravity heat pipe, and improve the heat exchange efficiency.

Description

Gravity heat pipe heat exchanger

Technical Field

The utility model relates to the technical field of heat exchangers, in particular to a gravity assisted heat pipe heat exchanger which can adapt to heat exchange between low-temperature flue gas and cold water.

Background

The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.

The heat pipe heat exchanger is a heat exchange device for performing phase change heat transfer by using heat pipe elements. At present, due to the high-efficiency, flexible and reliable performance of the heat pipe, the heat pipe has wide application in the fields of waste heat recovery, air conditioning dehumidification, electronic equipment heat dissipation, medical equipment temperature control and the like.

Currently, commonly used gas-liquid heat pipe heat exchangers have water as the cooling medium on the condensing side. However, the existing water side heat exchange structure design has the problems of insufficient heat exchange with the heat pipe, large flow resistance of cooling water, low flow speed, insufficient disturbance and the like. These factors can lead to a reduction in the temperature difference between the cooling water inlet and outlet, which in turn has an impact on the overall heat exchange efficiency of the heat pipe exchanger.

Disclosure of utility model

The utility model aims to provide a gravity assisted heat pipe heat exchanger which can adapt to heat exchange between low-temperature flue gas and cold water, so as to solve at least one technical problem in the background art.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

The utility model provides a gravity heat pipe heat exchanger, which comprises a first channel for circulating a first heat exchange working medium and a second channel for circulating a second heat exchange working medium, wherein a plurality of gravity heat pipes are connected between the first channel and the second channel;

The first channel is internally provided with a plurality of guide plates, the first channel is divided into a plurality of guide compartments by the plurality of guide plates, two adjacent guide compartments are communicated, the flowing direction of a first heat exchange working medium in each guide compartment is vertical to the flowing direction of a second heat exchange working medium in the second channel, the flowing directions of the first heat exchange working medium in the two adjacent guide compartments are opposite, the guide compartment into which the first heat exchange working medium firstly enters is the first guide compartment, and the guide compartment from which the first heat exchange working medium finally flows out is the tail end guide compartment.

Further, the first channel comprises a water tank connected with the second channel, one end of the water tank is provided with a first inlet for the first heat exchange working medium to flow into the first diversion compartment, and the other end of the water tank is provided with a first outlet for the first heat exchange working medium to flow out of the tail end diversion compartment.

Further, the water tank comprises two first side plates which are connected with the second channel and are oppositely arranged, and two adjacent guide plates are respectively connected to the two opposite first side plates.

Further, the second channel comprises a channel main body connected with the two first side plates, one end of the channel main body is provided with a second inlet for the second heat exchange working medium to flow in, and the other end of the channel main body is provided with a second outlet for the second heat exchange working medium to flow out.

Further, at least one gravity assisted heat pipe is arranged in each diversion compartment.

Further, the channel main body is cuboid.

Further, the bottom height of the water tank gradually decreases in a direction from the first inlet to the first outlet.

Further, the height of the bottom of the channel main body gradually decreases in the direction from the second inlet to the second outlet, and a condensed water outlet is arranged at one side close to the second outlet.

Further, a plurality of heat exchange fins are sequentially arranged on the radial end face of the part, extending into the second channel, of the gravity assisted heat pipe.

Further, the heat exchange fins are annular.

The gravity heat pipe heat exchange device has the beneficial effects that the heat exchange between the heat exchange working medium and the gravity heat pipe is more sufficient, the heat exchange effect is improved, the flow distance of the heat exchange working medium is improved, the effective heat exchange time between the heat exchange working medium and the gravity heat pipe is prolonged, and the heat exchange efficiency is improved.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

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

Fig. 1 is a perspective view of a gravity assisted heat pipe heat exchanger according to embodiment 1 of the present utility model.

Fig. 2 is a perspective view of the gravity assisted heat pipe heat exchanger according to embodiment 1 of the present utility model with the top plate of the water tank removed.

Fig. 3 is a top view of the gravity assisted heat pipe heat exchanger according to embodiment 1 of the present utility model with the top plate of the water tank removed.

Fig. 4 is a side view of the gravity assisted heat pipe heat exchanger according to embodiment 1 of the present utility model with the top plate of the water tank removed.

Fig. 5 is a cross-sectional view of the structure of fig. 4 taken along A-A.

Fig. 6 is a perspective view of a gravity assisted heat pipe heat exchanger according to embodiment 1 of the utility model.

Fig. 7 is a bottom view of the gravity assisted heat pipe heat exchanger according to embodiment 1 of the present utility model.

Fig. 8 is a perspective view of a gravity assisted heat pipe heat exchanger according to embodiment 2 of the present utility model.

Fig. 9 is a perspective view of the gravity assisted heat pipe heat exchanger according to embodiment 2 of the present utility model with the top plate of the water tank removed.

Fig. 10 is a top view of the gravity assisted heat pipe heat exchanger according to embodiment 2 of the present utility model with the top plate of the water tank removed.

Fig. 11 is a side view of the gravity assisted heat pipe heat exchanger according to embodiment 2 of the present utility model with the top plate of the water tank removed.

Fig. 12 is a cross-sectional view of the structure of fig. 11 taken along A-A.

Fig. 13 is a bottom view of the gravity assisted heat pipe heat exchanger according to embodiment 2 of the present utility model.

The heat exchange device comprises a first channel, a second channel, a gravity heat pipe 3, a flow guide plate 4, a flow guide compartment 5, a water tank 6, a first inlet 7, a first outlet 8, a first side plate 9, a channel main body 10, a second inlet 11, a second outlet 12, a heat exchange fin 13, a top plate 14, a first bottom plate 15, a bottom plate 16, an end plate 17, a second bottom plate 18, a connecting inclined plate 19, a second side plate 20, a trapezoid plate 21, a condensed water outlet 22, a round corner 23 and an external round pipe 23.

Detailed Description

Reference will now be made in detail to embodiments of the present utility model, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements throughout or elements having like or similar functionality. The embodiments described below by way of the drawings are exemplary only and should not be construed as limiting the utility model.

It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs.

It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless expressly stated otherwise, as understood by those skilled in the art. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, and/or groups thereof.

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 utility model. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

In the description of this specification, 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 or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present specification, the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate an orientation or positional relationship based on that shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present technology.

The terms "mounted," "connected," and "disposed" are to be construed broadly, and may be, for example, fixedly connected, disposed, detachably connected, or integrally connected, disposed, unless otherwise specifically defined and limited. The specific meaning of the above terms in the present technology can be understood by those of ordinary skill in the art according to the specific circumstances.

In order that the utility model may be readily understood, a further description of the utility model will be rendered by reference to specific embodiments that are illustrated in the appended drawings and are not to be construed as limiting embodiments of the utility model.

It will be appreciated by those skilled in the art that the drawings are merely schematic representations of examples and that the elements of the drawings are not necessarily required to practice the utility model.

As shown in fig. 1 to 7, embodiment 1 provides a gravity assisted heat pipe heat exchanger, which includes a first channel 1 through which a first heat exchange working medium flows, and a second channel 2 through which a second heat exchange working medium flows, wherein a plurality of gravity assisted heat pipes 3 are connected between the first channel 1 and the second channel 2. The gravity heat pipe is a type of heat pipe, and the gravity heat pipe is characterized in that the gravity heat pipe is similar to a common heat pipe, vaporization and condensation of working medium are utilized, and the working medium does not need external power and automatically circulates to transfer heat, and the gravity heat pipe is different from the common heat pipe in that a liquid suction core is not arranged in the pipe, and condensate flows back to an evaporation section from a condensation section instead of relying on capillary force generated by the liquid suction core, and the gravity of condensate is relied on, so the gravity heat pipe is also called as the gravity heat pipe.

In this embodiment, a part of each gravity assisted heat pipe 3 is located in the first channel 1 and exchanges heat with the first heat exchange working medium, and a part of each gravity assisted heat pipe is located in the second channel 2 and exchanges heat with the second heat exchange working medium. The temperature difference exists between the first heat exchange working medium and the second heat exchange working medium, for example, the temperature of the second heat exchange working medium flowing in the second channel 2 is higher than that of the first heat exchange working medium in the first channel 1, the first channel 1 is arranged above the second channel 2, a part of the gravity heat pipe 3 in the second channel 2 is used as an evaporation section to perform heat exchange with the second heat exchange working medium, a part of the gravity heat pipe 3 in the first channel 1 is used as a condensation section to perform heat exchange with the first heat exchange working medium, the working medium in the gravity heat pipe 3 absorbs the heat of the second heat exchange working medium in the evaporation section to gasify, and the heat is transferred to the first heat exchange working medium in the condensation section, so that the heat exchange between the first heat exchange working medium and the second heat exchange working medium is realized.

For example, in this embodiment, the first heat exchange working medium may be water, and the second heat exchange working medium may be flue gas. The flue gas flows into the second channel 2 from one end of the second channel 2, the temperature of the flue gas flowing into the second channel 2 is higher, the flue gas is hot flue gas, after exchanging heat with the gravity heat pipe 3, the flue gas flows out of the second channel 2 from the other end of the second channel 2, the temperature of the flue gas flowing out of the second channel 2 is reduced, and the flue gas is changed into cold flue gas. The water flows into the first channel 1 from one end of the first channel 1, the temperature of the water flowing into the first channel 1 is low, the water is cold water, after exchanging heat with the gravity heat pipe 3, the water flows out of the first channel 1 from the other end of the first channel 1, and the temperature of the water flowing out of the first channel 1 is increased to be hot water. In summary, the hot flue gas flows into the second channel 2 from one end of the second channel 2, exchanges heat with the evaporation section of the gravity heat pipe 3 in the second channel 2, the hot flue gas transfers heat to the working medium in the evaporation section, the working medium in the evaporation section is gasified and rises to the condensation section, the gasified hot working medium in the condensation section exchanges heat with the water in the first channel 1, and after the heat is transferred to water, the heat is condensed and liquefied and flows into the evaporation section.

The first channel 1 is internally provided with a plurality of guide plates 4, the first channel 1 is divided into a plurality of guide compartments 5 by the plurality of guide plates 4, two adjacent guide compartments 5 are communicated, a first heat exchange working medium flows from one guide compartment 5 to the other adjacent guide compartment 5, the flowing direction of the first heat exchange working medium in each guide compartment 5 is perpendicular to the flowing direction of the second heat exchange working medium in the second channel 2, and the flowing directions of the first heat exchange working medium in the two adjacent guide compartments 5 are opposite, so that the flow distance of the first heat exchange working medium in the first channel 1 is increased, and the heat exchange effect and the heat exchange efficiency are improved. For example, in this embodiment, the flow direction of the flue gas in the second channel 2 is from the left end of the second channel 2, the flow direction of the flue gas flows out to the right end of the second channel, the flow direction of the flue gas is the first direction, the arrangement direction of the baffle 4 is perpendicular to the first direction, the water flowing into the first channel 1 flows along the baffle 4 first, flows into another adjacent baffle compartment 5 after flowing to the other end of the baffle 4, and in the other adjacent baffle compartment 5, the flow direction of the water is exactly opposite to the flow direction in the previous baffle compartment 5, and so on until the water flows out of the last baffle compartment 5. The diversion compartment 5 into which the first heat exchange working medium firstly enters is a first diversion compartment, and the diversion compartment 5 from which the first heat exchange working medium finally flows out is a tail end diversion compartment.

In this embodiment, the first channel 1 includes a water tank 6 connected to the second channel 2, one end of the water tank 6 is provided with a first inlet 7 through which the first heat exchange working medium flows into the first diversion compartment, and the other end of the water tank 6 is provided with a first outlet 8 through which the first heat exchange working medium flows out of the terminal diversion compartment. Specifically, the water tank 6 includes two first side plates 9 that are connected with the second channel 2 and set up relatively, the water tank 6 can also include with the first bottom plate 15 that the second channel 2 is connected, the both sides of first bottom plate 15 all are connected with one first side plate 9, the both ends of first bottom plate 15 all are connected with an end plate 16, two first side plates 9, the top of two end plates 16 are connected with roof 14 jointly, first bottom plate 15, roof 14 and two first side plates 9, two end plates 16 enclose jointly into the water tank 6. Wherein two adjacent guide plates 4 are respectively connected to two opposite first side plates 9.

In this embodiment, as shown in fig. 2, the diversion compartment 5 into which the first heat exchange medium first enters is a first diversion compartment, the front end of the leftmost diversion plate 4 is connected to the first side plate 9 at the front side, the bottom end is connected to the first bottom plate 15, the top end is connected to the top plate 14, the first diversion compartment is surrounded by the end plate 16 at the left end, and a gap is formed between the rear end of the leftmost diversion plate 4 and the first side plate 9 at the rear side. The rear end of the deflector 4 adjacent to the deflector 4 enclosing the first deflector compartment is connected to the first side plate 9 on the rear side, the bottom end is also connected to the first bottom plate 15, the top end is also connected to the top plate 14, and a gap is left between the front end and the first side plate 9 on the front side. The adjacent flow guide plates 4 are arranged by analogy, the first heat exchange working medium in the first flow guide compartment flows from the gap at the rear side to the second flow guide compartment adjacent to the first flow guide compartment, and the second heat exchange working medium in the second flow guide compartment flows from the gap at the front side to the third flow guide compartment adjacent to the second flow guide compartment until the second heat exchange working medium flows out of the water tank 6 from the tail end flow guide compartment.

In this embodiment, in order to reduce the resistance of the first heat exchange medium when the first heat exchange medium flows between two adjacent diversion compartments and turns, the connection portion between the diversion plate 4 and the first side plate 9 is set as a fillet 22.

As shown in fig. 2, in this embodiment, the number of the guide plates 4 is 11, and is an odd number, and 12 guide compartments 5 are formed in a conformal manner, and the leftmost guide plate 4 is connected to the first side plate 9 on the front side, and then the rightmost guide plate 4 is also connected to the first side plate 9 on the front side. The first inlet 7 and the first outlet 8 are both arranged on said first side plate 9 of the front side. In a specific application, the number of the flow guide plates 4 is not limited by the number, and a person skilled in the art may set the number of the flow guide plates 4 according to specific situations, for example, 10 or 12 or more flow guide plates 4 may be set, and of course, the more the number of the flow guide plates 4 is set, the longer the flow path distance of the first heat exchange working medium in the first channel 1. When the number of the guide plates 4 is even, the guide plates 4 at the leftmost end and the guide plates 4 at the rightmost end are arranged on different first side plates 9, and likewise, the first inlet 7 and the first outlet 8 are also respectively arranged on different first side plates 9.

The first inlet 7 and the first outlet 8 are arranged in such a manner that the first inlet 7 is arranged on the first side plate 9 on the front side, and if the first inlet 7 is arranged on the first side plate 9 on the rear side in the drawing, the rear end of the leftmost baffle 4 is first connected to the first side plate 9 on the rear side. Likewise, whether the first outlet 8 is provided on the front side first side plate 9 or on the rear side first side plate 9 is related to whether the number of baffles 4 is odd or even. The underlying principle is based on the flow direction of the first heat exchange medium in the end flow guiding compartment. For example, if the first heat exchanging medium flows from the first side plate 9 on the rear side to the first side plate 9 on the front side in the end flow guiding compartment, the first outlet 8 is provided on the first side plate 9 on the front side, and if the first heat exchanging medium flows from the first side plate 9 on the front side to the first side plate 9 on the rear side in the end flow guiding compartment, the first outlet 8 is provided on the first side plate 9 on the rear side.

In this embodiment, the second channel 2 includes a channel main body 10 connected to the two first side plates 9, one end of the channel main body 10 is provided with a second inlet 11 into which the second heat exchange working medium flows, and the other end of the channel main body 10 is provided with a second outlet 12 from which the second heat exchange working medium flows out. Specifically, in this embodiment, the channel main body 10 includes a second bottom plate 17, two sides of the second bottom plate 17 are connected with a second side plate 19, two ends of the second bottom plate 17 are connected with a trapezoid plate 20, two ends of the second side plate 19 are also connected with a trapezoid plate 20, two ends of the top of the two second side plates 19 are also connected with a trapezoid plate 20, so two ends of the channel main body 10 include four trapezoid plates 20, four trapezoid plates 20 at the left end enclose the second inlet 11 together, and four trapezoid plates 20 at the right end enclose the second outlet 12 together. In this embodiment, the second inlet 11 and the second outlet 12 surrounded by the trapezoid plates 20 are both quadrangular, and the holes surrounded by the trapezoid plates 20 with smaller area face outwards.

In this embodiment, the first bottom plate 15 of the water tank 6 is located at the top of the channel body 10, and encloses the channel body 10 together with the two second side plates 19 and the second bottom plate 17, where the enclosed channel body 10 has a cuboid shape, and correspondingly, the water tank 6 has a cuboid shape. The channel body 10 forms together with the second inlet 11 and the second outlet 12 a second channel 2. The top parts of the two second side plates 19 are connected with the first bottom plate 15 and the first side plate 9 of the water tank 6 through a connecting inclined plate 18, and then the two ends of the first bottom plate 15 are also connected with a trapezoid plate 20 through a connecting inclined plate 18.

In this embodiment, as shown in fig. 1 to 7, the first inlet 7 and the second inlet 11 are located at the same end, and the first outlet 8 and the second outlet 12 are located at the same end, so that the overall flow direction of the first heat exchange working medium in the first channel 1 is identical to the flow direction of the second heat exchange working medium in the second channel 2. In particular applications, the first inlet 7 and the second inlet 11 may be disposed at different ends, and the first outlet 8 and the second outlet 12 may also be disposed at different ends, for example, the first inlet 7 is disposed at the left end of the water tank 6, the second inlet 11 is disposed at the right end of the channel body 10, the first outlet 8 is disposed at the right end of the water tank 6, and the second outlet 12 is disposed at the left end of the channel body 10, so that the first heat exchange medium flows into the water tank 6 from the first inlet 7, then flows out of the water tank 6 from the first outlet 8, and the second heat exchange medium flows into the channel body 10 from the second inlet 11, and flows out of the channel body 10 from the second outlet 12.

In this embodiment, in order to increase the flow rate of the first heat exchange medium in the water tank 6, the bottom height of the water tank 6 gradually decreases in the direction from the first inlet 7 to the first outlet 8. Specifically, as shown in fig. 5, the thickness of the first bottom plate 15 gradually decreases from the left end to the right end, that is, the thickness of the left end of the first bottom plate 15 is thickest, the first heat exchange working medium flows into the water tank 6 from the first inlet 7, flows out of the water tank 6 from the first outlet 8 after heat exchange, and flows from a high position to a low position as a whole, so that the flow speed of the first heat exchange working medium is improved.

In order to improve the heat exchange efficiency and heat exchange quality of the second heat exchange working medium and the gravity assisted heat pipe 3, a plurality of heat exchange fins 13 are sequentially arranged on the radial end face of the part (i.e. the evaporation section part) of the gravity assisted heat pipe 3 extending into the second channel 2. As shown in fig. 6, the heat exchange fins 13 are annular, and are sequentially sleeved and connected to the gravity assisted heat pipe 3 from top to bottom. Likewise, the portion of the gravity assisted heat pipe 3 extending into the water tank 6 (i.e. the condensing section portion) may be provided with the same heat exchange fins, and in this embodiment, in order to reduce the influence of the flow disturbance of the first heat exchange medium, the condensing section is not provided with the heat exchange fins 13.

Specifically, the gravity assisted heat pipe 3 passes through the first bottom plate 15, so that a part of gravity assisted heat pipe is located in the channel main body 10 and used as an evaporation section, in a specific embodiment, a jack communicated with the channel main body 10 may be provided on the first bottom plate 15, and a circle of sealing ring is provided around the jack, and the gravity assisted heat pipe 3 extends a part of gravity assisted heat pipe into the channel main body 10 through the jack and is used as an evaporation section.

At least one gravity assisted heat pipe 3 is arranged in each diversion compartment 5. For example, one gravity assisted heat pipe 3 may be disposed in each diversion compartment 5, or at least two gravity assisted heat pipes 3 may be disposed, in this embodiment, as shown in fig. 2 and 3, a total of 30 gravity assisted heat pipes are disposed, and 3 and 2 adjacent diversion compartments 5 are respectively disposed.

The gravity heat pipe heat exchanger is applied to heat exchange of hot flue gas and cold water. For example, when cold water flows into the water tank 6 from the first inlet 7, hot flue gas flows into the channel main body 10 from the second inlet 11, the hot flue gas transfers heat to the evaporation section of the gravity heat pipe 3 in the channel main body 10, the working medium in the evaporation section is gasified and rises to the condensation section to transfer the heat to the cold water in the water tank 6, the gaseous working medium is liquefied by the cold water and then sinks to the evaporation section, the working medium is liquefied by the hot flue gas in the evaporation section, and condensed water is possibly generated by condensation, in this embodiment, as shown in fig. 7, a condensed water outlet 21 is arranged at the bottom of the right end of the second bottom plate 17 so that the condensed water flows out from the channel main body 10. In this embodiment, in order to ensure that the condensed water can flow out of the channel body 10, the bottom height of the channel body is gradually reduced in the direction from the second inlet 11 to the second outlet 12, that is, the thickness of the second bottom plate 17 gradually decreases from the left end to the right end, that is, the thickness of the left end of the second bottom plate 17 is thickest, and in the channel body 10, the condensed water generated on the gravity assisted heat pipe 3 flows along the second bottom plate 17 to the right end, and flows out of the channel body 10 through the condensed water outlet 21.

As shown in fig. 8 to 13, in the gravity assisted heat pipe heat exchanger according to embodiment 2, unlike in embodiment 1, the ends of the quadrangular pyramid-shaped second inlet 11 and second outlet 12 at both ends of the channel body 10 are connected with external circular pipes 23 to facilitate connection of circular flue gas pipes. In addition, unlike embodiment 1, the first outlet 8 is provided on the end plate 16 at the end remote from the first inlet 7, instead of being provided on the first side plate 9. In particular, the position of the first outlet 8 on the end plate 16 is either on the side of the first side plate 9 close to the front side or on the side of the first side plate 9 close to the rear side, which is arranged in principle in the flow direction of the first heat exchanging medium in the flow guiding compartment 5 according to embodiment 1. If, for example, the first heat exchanging medium flows from the rear first side plate 9 to the front first side plate 9 in the end flow guiding compartment, the first outlet 8 is located on the end plate 16 close to the front first side plate 9, and if the first heat exchanging medium flows from the front first side plate 9 to the rear first side plate 9 in the end flow guiding compartment, the first outlet 8 is located on the end plate 16 close to the rear first side plate 9. In embodiment 2, the first inlets 7 are disposed on the first side plate on the front side, and the number of the baffle plates 4 is 11 as in embodiment 1, and the first outlets 8 are disposed on the end plate 16 near the first side plate 9 on the front side in the drawing.

While the foregoing description of the embodiments of the present utility model has been presented in conjunction with the drawings, it should be understood that it is not intended to limit the scope of the utility model, but rather, it should be understood that various changes and modifications could be made by one skilled in the art without the need for inventive faculty, which would fall within the scope of the utility model.

Claims (10)

1. The gravity heat pipe heat exchanger comprises a first channel (1) for the circulation of a first heat exchange working medium and a second channel (2) for the circulation of a second heat exchange working medium, and is characterized in that:

A plurality of gravity heat pipes (3) are connected between the first channel (1) and the second channel (2), and one part of each gravity heat pipe (3) is positioned in the first channel (1) to exchange heat with the first heat exchange working medium and the other part is positioned in the second channel (2) to exchange heat with the second heat exchange working medium;

A plurality of guide plates (4) are arranged in the first channel (1), the first channel (1) is divided into a plurality of guide compartments (5) by the guide plates (4), two adjacent guide compartments (5) are communicated, the flowing direction of a first heat exchange working medium in each guide compartment (5) is perpendicular to the flowing direction of a second heat exchange working medium in the second channel (2), the flowing directions of the first heat exchange working medium in the two adjacent guide compartments (5) are opposite, the guide compartment (5) into which the first heat exchange working medium firstly enters is the first guide compartment, and the guide compartment (5) from which the first heat exchange working medium finally flows out is the tail end guide compartment.

2. A gravity assisted heat pipe heat exchanger according to claim 1, wherein the first channel (1) comprises a water tank (6) connected to the second channel (2), one end of the water tank (6) being provided with a first inlet (7) for the first heat exchanging medium to flow into the first guiding compartment, and the other end of the water tank (6) being provided with a first outlet (8) for the first heat exchanging medium to flow out of the terminal guiding compartment.

3. A gravity assisted heat pipe heat exchanger according to claim 2 wherein the water tank (6) comprises two first side plates (9) connected to the second channel (2) and arranged opposite thereto, adjacent two of the deflectors (4) being connected to the two opposite first side plates (9), respectively.

4. A gravity assisted heat pipe heat exchanger according to claim 3 wherein the second channel (2) comprises a channel body (10) connected to the two first side plates (9), one end of the channel body (10) being provided with a second inlet (11) into which the second heat exchanging medium flows, and the other end of the channel body (10) being provided with a second outlet (12) from which the second heat exchanging medium flows.

5. A gravity assisted heat pipe heat exchanger according to claim 1 wherein at least one gravity assisted heat pipe (3) is provided in each of the diversion compartments (5).

6. A gravity assisted heat pipe heat exchanger according to claim 4 wherein the channel body (10) is cuboid in shape.

7. A gravity assisted heat pipe heat exchanger according to claim 2 wherein the bottom height of the water tank (6) decreases gradually in the direction of the first inlet (7) to the first outlet (8).

8. A gravity assisted heat pipe heat exchanger according to claim 4 wherein the height of the bottom of the channel body decreases gradually in the direction from the second inlet (11) to the second outlet (12), and a condensate outlet (21) is provided on the side close to the second outlet (12).

9. A gravity assisted heat pipe heat exchanger according to any of the claims 1-8 wherein the radial end face of the portion of the gravity assisted heat pipe (3) extending into the second channel (2) is provided with a plurality of heat exchanging fins (13) in sequence.

10. Gravity assisted heat pipe heat exchanger according to claim 9, characterised in that the heat exchange fins (13) are annular.