CN217929920U - Evaporator and loop heat pipe - Google Patents

Abstract

The utility model discloses an evaporimeter and return circuit heat pipe, the evaporimeter includes: the evaporator comprises an evaporator main body, wherein a partition plate is arranged in the evaporator main body to divide an inner cavity of the evaporator main body into an evaporation chamber and a compensation chamber, and a communication port for communicating the evaporation chamber and the compensation chamber is formed in the partition plate; and the heat insulation layer is arranged in the compensation chamber, the liquid working medium in the compensation chamber can flow into the evaporation chamber through the heat insulation layer, and the heat insulation layer is used for at least blocking part of heat flow entering the compensation chamber from the communication port. Because the heat insulating layer is arranged in the compensation chamber and at least blocks part of heat flow entering the compensation chamber through the communication port, the heat transmitted to the compensation chamber by the evaporation chamber is reduced by the heat insulating layer, and the possibility of gasification of working media in the compensation chamber is further reduced. In addition, because when the insulating layer blocks off all the communication ports, the insulating layer is the insulating layer that allows liquid to pass through for liquid can permeate the insulating layer, gets into in the evaporation chamber through the communication port to realize the use of evaporimeter.

Description

Evaporator and loop heat pipe

Technical Field

The utility model belongs to the technical field of the electron heat dissipation technique and specifically relates to an evaporimeter and return circuit heat pipe is related to.

Background

When the loop heat pipe works, the evaporation area absorbs the heat of external heating elements such as a chip and the like, so that the internal working medium is gasified, the gasified working medium flows to the condensation area from the evaporation pipeline, the liquid formed by a cooling system such as an external fan and the like flows back to the compensation chamber of the evaporator cavity through the liquid working medium pipeline, and then flows to the evaporation chamber through the capillary structure, and the evaporation chamber is heated and gasified to the condensation area through the heating elements, so that the circulating operation is realized.

In the process of implementing the present application, the inventors found that at least the following problems exist in the prior art: after the evaporator is contacted with a heat source, the heat of the evaporation chamber is transferred to the compensation chamber, usually, the working medium in the compensation chamber is gasified, reverse heat flow is formed, and the cycle work of the loop heat pipe is influenced.

SUMMERY OF THE UTILITY MODEL

In view of this, the first objective of the present invention is to provide an evaporator, which can reduce the heat transferred to the compensation chamber in the evaporation chamber, and further reduce the possibility of gasifying the working medium in the compensation chamber.

A second object of the present invention is to provide a loop heat pipe.

In order to achieve the first object, the present invention provides the following solutions:

an evaporator, comprising:

the evaporator comprises an evaporator main body, wherein a partition plate is arranged in the evaporator main body to divide an inner cavity of the evaporator main body into an evaporation chamber and a compensation chamber, and a communication port for communicating the evaporation chamber with the compensation chamber is formed in the partition plate; and

the heat insulation layer is arranged in the compensation chamber, liquid working medium in the compensation chamber can flow into the evaporation chamber through the heat insulation layer, and the heat insulation layer is used for at least blocking part of heat flow entering the compensation chamber from the communication port.

In a specific embodiment, the evaporator further comprises a capillary structure component;

one part of the side wall of the heat insulation layer is abutted against or connected with the inner wall of the compensation chamber, a preset gap is formed between the other part of the side wall and the inner wall of the compensation chamber, the preset gap and the communication port are filled with the capillary structure assembly, and the capillary structure assembly extends into the evaporation chamber.

In another specific embodiment, the capillary structure assembly is in contact with a first capillary structure in a liquid inlet pipe of the loop heat pipe, the liquid inlet pipe is used for communicating with the compensation chamber, and the capillary force of the capillary structure assembly is greater than that of the first capillary structure.

In another specific embodiment, the capillary structure assembly comprises a second capillary structure and a third capillary structure;

the second capillary structure is in contact with the first capillary structure;

the third capillary structure is in contact with the second capillary structure;

the capillary force of the second capillary structure is larger than that of the first capillary structure, the capillary force of the third capillary structure is larger than that of the second capillary structure, and the third capillary structure is filled from the compensation chamber and penetrates through the communication port to enter the evaporation chamber.

In another specific embodiment, the second capillary structure is tubular, and the inner wall is sleeved outside the liquid inlet pipe; and/or

The evaporator also comprises a gas barrier which is arranged on the periphery of the wall surface of the compensation chamber and is used for placing heat leakage at the contact part of the second capillary structure and the compensation chamber.

In another specific embodiment, the thermal insulation layer is arranged on the end face of the third capillary structure contacting the second capillary structure, and a part of the side wall of the thermal insulation layer is in contact with the second capillary structure;

the thermal insulation layer is made of a material with low thermal conductivity.

In another specific embodiment, the evaporator body comprises a base plate and a chamber cover;

the cavity cover sealing cover is arranged on the bottom plate, and a hollow first channel is arranged at the position where the cavity cover is connected with the bottom plate;

the baffle is connected the cavity is covered, just the baffle deviates from the bottom terminal surface of cavity lid with the top of third capillary structure deviates from the terminal surface contact of bottom plate, just the baffle is used for contacting the position department of third capillary structure is provided with hollow second channel.

In another specific embodiment, the evaporator further comprises a heat absorption pad;

the heat absorption pad is covered at the top end of the cavity cover; and/or

And a pressing groove for pressing the third capillary structure to the bottom plate is formed in the bottom wall of the cavity cover.

In another specific embodiment, the evaporation chamber is also provided with a mounting through hole for communicating with a gas pipe of the loop heat pipe,

the cross-section of the evaporation chamber is gradually reduced along a direction from the end of the evaporation chamber connecting the gas pipe to the other end.

According to the utility model discloses an each embodiment can make up as required wantonly, and the embodiment that obtains after these combinations is also in the utility model discloses the scope is the utility model discloses a part of the concrete implementation mode.

The utility model discloses an evaporator, owing to be provided with the insulating layer in the compensation chamber, and the insulating layer blocks a part intercommunication mouth at least and gets into the thermal current of compensation chamber, consequently, setting up of insulating layer has reduced the heat that the evaporating chamber transmitted to the compensation chamber, and then has reduced the gasification possibility of working medium in the compensation chamber.

In addition, because when the insulating layer blocks off all the communication ports, the insulating layer is the insulating layer that allows liquid to pass through for liquid can permeate the insulating layer, gets into in the evaporation chamber through the communication port to realize the use of evaporimeter.

In order to achieve the second objective, the present invention provides the following solutions:

a loop heat pipe comprising a liquid inlet pipe and a gas pipe and an evaporator as described in any one of the above;

the compensation chamber is communicated with the liquid inlet pipe, and the evaporation chamber is communicated with the gas pipe.

Because the utility model provides a return circuit heat pipe includes the evaporimeter in the above-mentioned arbitrary item, consequently, the beneficial effect that the evaporimeter contained all is the utility model discloses a return circuit heat pipe contains.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the description below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without any novelty.

Fig. 1 is a schematic top view of a loop heat pipe according to the present invention;

fig. 2 is a schematic view of the loop heat pipe according to the present invention;

FIG. 3 isbase:Sub>A schematic sectional view A-A of FIG. 1;

FIG. 4 is another schematic sectional view A-A of FIG. 1;

FIG. 5 is a schematic sectional view of the structure of FIG. 1B-B;

fig. 6 is a schematic cross-sectional structural view of an evaporator main body provided by the present invention;

FIG. 7 is a schematic cross-sectional view of C-C of FIG. 1;

fig. 8 is a schematic sectional view of fig. 2 taken along line D-D.

Wherein, in fig. 1-8:

the evaporator 100, the evaporator body 101, the liquid inlet pipe 102, the first capillary structure 103, the capillary structure assembly 104, the partition plate 105, the compensation chamber 101a, the evaporation chamber 101b, the second capillary structure 104a, the annular limiting protrusion 104a-1, the third capillary structure 104b, the steam channel 104b-2a, the first sub-capillary structure layer 104b-1, the second sub-capillary structure layer 104b-2, the heat insulation layer 106, the bottom plate 101c, the cavity cover 101d, the first channel 101d-1, the second channel 105a, the communication port 105b, the heat absorption pad 107, the pressing groove 101d-2, the gas pipe 108, the loop heat pipe 1000 and the condenser 200.

Detailed Description

The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to fig. 1 to 8 of the drawings in the embodiment of the present invention. The present invention can be realized in various forms, and is not limited to the embodiment described in the present embodiment. The following detailed description is provided to facilitate a more thorough understanding of the present disclosure, and the terms used to indicate orientation and orientation are merely provided for relative positions of illustrated structures in the accompanying drawings.

It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Further, the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, elements, components, and/or groups thereof. The following description is of the best mode contemplated for carrying out the present invention and is made for the purpose of illustrating the general principles of the invention and not for the purpose of limiting the invention. The protection scope of the present invention is subject to the limitations defined by the appended claims.

Referring to fig. 1-3, the present invention provides an evaporator 100, which can effectively reduce the heat transfer from the evaporation chamber 101b to the compensation chamber 101a, and further reduce the possibility of gasifying the working medium in the compensation chamber 101 a.

The evaporator 100 includes an evaporator main body 101, a heat insulation layer 106, and a capillary structure component 104, specifically, the evaporator main body 101 has an inner cavity, and the shape of the inner cavity is not limited and can be set as required.

A partition plate 105 is provided in the evaporator main body 101 to divide an inner cavity of the evaporator main body 101 into an evaporation chamber 101b and a compensation chamber 101a, and a communication port 105b for communicating the evaporation chamber 101b and the compensation chamber 101a is opened in the partition plate 105.

A thermal insulation layer 106 is arranged in the compensation chamber 101a, and the liquid medium in the compensation chamber 101a can flow into the evaporation chamber 101b through the thermal insulation layer 106, and the thermal insulation layer 106 serves to block at least a part of the heat flow entering the compensation chamber 101a from the communication opening 105b.

It is understood that the thermal insulation layer 106 can be directly blocked at the communication port 105b, in this case, the thermal insulation layer 106 can completely block the communication port 105b, or can block only a part, when the thermal insulation layer 106 completely blocks the communication port 105b, the thermal insulation layer 106 is a layer allowing liquid to pass through, when the thermal insulation layer 106 blocks only a part of the communication port 105b, the thermal insulation layer 106 can be made of a material completely impermeable to water, or a material having water permeability; the heat insulation layer 106 may be disposed at a certain distance from the heat insulation layer 106 instead of directly blocking the communication port 105b, of course, the heat insulation layer 106 may also block the heat flow after the heat flow enters the compensation chamber 101a from the communication port 105b, and when the heat insulation layer 106 completely blocks the heat flow entering the compensation chamber 101a from the communication port 105b, and when the heat flow continues to flow through the flow passage in the compensation chamber 101a, the heat insulation layer 106 may also be a layer allowing the liquid to pass through, and when the heat insulation layer 106 partially blocks the flow passage entering the compensation chamber 101a from the communication port 105b, the heat insulation layer 106 may be made of a material completely impermeable to water and air, and may also be made of a material having water permeability.

That is, the heat insulating layer 106 blocks all the communication ports 105b, including the heat insulating layer 106 directly and completely blocking the communication ports 105b, and the heat insulating layer 106 completely blocks the flow passage through which the heat flows from the communication ports 105b into the compensation chamber 101a and then continues to flow in the compensation chamber 101 a.

Because the heat insulation layer 106 is arranged in the compensation chamber 101a, and the heat insulation layer 106 blocks at least a part of the heat flow entering the compensation chamber 101a from the communication port 105b, the heat quantity transferred from the evaporation chamber 101b to the compensation chamber 101a is reduced by the arrangement of the heat insulation layer 106, and the possibility of gasifying the working medium in the compensation chamber 101a is further reduced.

Further, since the heat insulating layer 106 is a heat insulating layer 106 that allows liquid to pass therethrough when the heat insulating layer 106 blocks all of the communication ports 105b, the liquid can permeate the heat insulating layer 106 to enter the evaporation chamber 101b through the communication ports 105b to enable use of the evaporator 100.

In some embodiments, the present invention discloses that the evaporator 1000 further comprises a capillary structure assembly 104, a part of the side wall of the thermal insulation layer 106 abuts against or is connected with the inner wall of the compensation chamber 101a, and another part of the side wall has a predetermined gap with the inner wall of the compensation chamber 101 a.

The capillary structure 104 fills the predetermined gap and the communication opening 105b, and the outlet end of the capillary structure 104 extends into the evaporation chamber 101 b. It should be noted that the predetermined gap is set as needed, and is specifically set according to the size of the capillary structure assembly 104.

The arrangement of the capillary structure component 104 facilitates the liquid to rapidly enter the evaporation chamber 101b through the capillary force of the capillary structure component 104 on the one hand, and on the other hand, the capillary structure component 104 fills the preset gap formed between the communication port 105b and the thermal insulation layer 106 and the compensation chamber 101a, and further generates a blocking effect on the heat flow passing through the communication port 105b and the preset gap, so that the heat entering the compensation chamber 101a is reduced, and the possibility of the gasification of the working medium in the compensation chamber 101a is further reduced.

Further, the utility model discloses a capillary structure subassembly 104 contacts with first capillary structure 103 in the feed liquor pipe 102 of return circuit heat pipe, and feed liquor pipe 102 is used for intercommunication compensation room 101a, and the capillary force of capillary structure subassembly 104 is greater than the capillary force of first capillary structure 103 for liquid in capillary structure subassembly 104 can be with first capillary structure 103 is inhaled in the evaporation chamber 101 b.

That is, the first capillary structure 103 and the capillary structure component 104 form a starting pressure difference, so that gravity assistance or additional assistance function assistance is avoided, and the starting pressure difference can be formed, so that the liquid working medium in the condenser 200 can smoothly enter the evaporator 100.

Specifically, the first capillary structure 103 is sleeved in the liquid inlet pipe 102, and the length of the first capillary structure is at least equal to that of the liquid inlet pipe 102. The first capillary structure 103 is sleeved in the liquid inlet pipe 102, and the liquid inlet pipe 102 plays a role of safely protecting the first capillary structure 103.

The liquid inlet pipe 102 is used for communicating a liquid working medium inlet of the evaporator main body 101 with a liquid working medium outlet of the condenser 200, the liquid inlet pipe 102 extends into the compensation chamber 101a, and the heat insulation layer 106 supports the liquid inlet pipe 102, specifically, the evaporator main body 101 is provided with a first installation through hole allowing the liquid inlet pipe 102 to pass through, and the liquid inlet pipe 102 passes through the first installation through hole and extends to the inner cavity of the evaporator main body 101 by a certain length.

The first capillary structure 103 is tubular, is sleeved in the liquid inlet pipe 102, and is arranged coaxially with the liquid inlet pipe 102. The first capillary structure 103 is tubular, so that when the liquid working medium flowing through the liquid inlet pipe 102 is large, the liquid working medium can rapidly enter the inner cavity of the evaporator main body 101 through the inner hole of the first capillary structure 103.

Further, the present invention specifically discloses that the capillary structure assembly 104 includes a second capillary structure 104a and a third capillary structure 104b, the second capillary structure 104a is in contact with the first capillary structure 103, and the capillary force of the second capillary structure 104a is greater than the capillary force of the first capillary structure 103, so that the second capillary structure 104a can suck the liquid in the first capillary structure 103 into the second capillary structure 104 a.

The third capillary structure 104b is in contact with the second capillary structure 104a, the capillary force of the third capillary structure 104b is greater than that of the second capillary structure 104a, and the third capillary structure 104b fills from the compensation chamber 101a and enters the evaporation chamber 101b through the communication port 105b, so that the third capillary structure 104b sucks the liquid in the second capillary structure 104a into the third capillary structure 104b and transports the liquid into the evaporation chamber 101 b. Namely, the first capillary structure 103, the second capillary structure 104a and the third capillary structure 104b form a starting pressure difference for driving the liquid working medium to flow.

Further, the present invention discloses that the second capillary structure 104a and the third capillary structure 104b are arranged in order from the first capillary structure 103 to a direction close to the heat source. It will be appreciated that the heat source is disposed on the side of the base plate 101c remote from the capillary structure assembly 104, taking the orientation of fig. 3 as an example.

Further, the utility model discloses a third capillary structure 104b includes first sub-capillary structure layer 104b-1 and second sub-capillary structure layer 104b-2, and from first capillary structure 103 to the direction that is close to the heat source, first sub-capillary structure layer 104b-1 and second sub-capillary structure layer 104b-2 set gradually, and second capillary structure 104a and insulating layer 106 all set up on the terminal surface that first sub-capillary structure layer 104b-1 deviates from second sub-capillary structure layer 104 b-2.

The capillary force of the first sub-capillary structure layer 104b-1 is greater than that of the second capillary structure layer 104a and less than that of the second sub-capillary structure layer 104 b-2.

The second sub-capillary structure layer 104b-2 has a plurality of vapor channels 104b-2a respectively communicating with the compensation chamber 101a and the evaporation chamber 101 b.

Specifically, the second sub-capillary structure layer 104b-2 is laid on the entire bottom surface of the compensation chamber 101a, where the bottom surface of the compensation chamber 101a is set in the direction of fig. 3, for convenience of description only, and has no other specific meaning.

The first sub-capillary structure layer 104b-1 covers at least the top end face of the second sub-capillary structure layer 104b-2 completely. The arrangement of the first sub-capillary structure layer 104b-1 and the second sub-capillary structure layer 104b-2 can uniformly transmit the liquid working medium in the second capillary structure 104a to the third capillary structure 104b, so that the liquid working medium entering the evaporation chamber 101b is uniform.

It should be noted that, the first sub-capillary structure layer 104b-1 at least completely covers the top end face of the second sub-capillary structure layer 104b-2 means that the first sub-capillary structure layer 104b-1 may cover a part of the outer side wall of the second sub-capillary structure layer 104b-2, in addition to completely covering the top end face of the second sub-capillary structure layer 104 b-2.

The second sub-capillary structure layer 104b-2 has a plurality of vapor channels 104b-2a, both ends of which are respectively communicated with the compensation chamber 101a and the evaporation chamber 101b, that is, the second sub-capillary structure layer 104b-2 is a multi-channel capillary structure, so that the liquid working medium in the first sub-capillary structure layer 104b-1 is conveniently conveyed into the evaporation chamber 101b through the vapor channels 104b-2a.

It can be understood that a transition capillary structure layer may also be disposed between the first sub-capillary structure layer 104b-1 and the second sub-capillary structure layer 104b-2 in a direction from the first capillary structure 103 to a position close to the heat source, and the capillary force of the transition capillary structure layer is greater than that of the first sub-capillary structure layer 104b-1 and less than that of the second sub-capillary structure layer 104b-2, so as to increase the rate of the liquid working medium entering the second sub-capillary structure layer 104 b-2. It should be noted that, in the direction from the first capillary structure 103 to the heat source, the transition capillary structure layer may be set to be a multi-layer capillary structure layer with gradually increasing capillary force, so as to further increase the rate of the liquid working medium entering the second sub-capillary structure layer 104 b-2.

Specifically, the utility model discloses a first capillary structure 103, second capillary structure 104a, third capillary structure 104b are equallyd divide and are adopted metal such as powder sintering or silk screen to form respectively.

In some embodiments, the bottom end of the partition 105 has a certain gap d from the bottom end of the inner cavity of the evaporator main body 101 to form a communication port 105b.

Specifically, as shown in fig. 6, the gap d is a distance between the bottom end of the partition 105 and the bottom end of the inner cavity of the evaporator main body 101 when the bottom end of the partition 105 can completely fit on the top end of the third capillary structure 104 b.

In some embodiments, the second capillary structure 104a is tubular, and the inner wall is sleeved outside the liquid inlet pipe 102. The second capillary structure 104a is provided with an air barrier (not shown) at the periphery of the wall surface of the compensation chamber 101a to prevent heat leakage at the contact position of the second capillary structure 104a and the compensation chamber 101 a.

In order to facilitate the contact between the second capillary structure 104a and the first capillary structure 103, the utility model discloses an inner wall of the second capillary structure 104a is provided with an annular limiting protrusion 104a-1 which is limited by the abutment with the first capillary structure 103, as shown in fig. 3 and 4.

In some embodiments, the present disclosure discloses that the insulation layer 106 is a capillary structure, and the capillary force of the insulation layer 106 is less than the capillary force of the first capillary structure 103.

The thermal insulation layer 106 is made of a material with low thermal conductivity, and more specifically, the thermal insulation layer 106 may be made of a material with high water content and low thermal conductivity, so that the thermal insulation layer 106 can store certain moisture on the basis of the thermal insulation effect.

Further, the utility model discloses a insulating layer 106 is made for the high temperature cotton. It should be noted that the thermal insulation layer 106 is made of high-temperature cotton, which is only one specific embodiment of the present invention, and in practical applications, the thermal insulation layer 106 may also be made of other materials with low thermal conductivity.

In some embodiments, the evaporator main body 101 includes a bottom plate 101c and a cavity cover 101d, the cavity cover 101d is disposed on the bottom plate 101c in a sealing manner, and a hollow first channel 101d-1 is disposed at a position where the cavity cover 101d is connected to the bottom plate 101c, as shown in fig. 5 and 7, the first channel 101d-1 is disposed around the circumference of the inner cavity of the evaporator main body 101 to perform a heat insulation function, so as to further slow down heat transfer to the inner wall of the compensation chamber 101a, and heat and gasify the working medium of the compensation chamber 101a to form a reverse heat flow.

Specifically, the utility model discloses an offer the constant head tank that is used for the location and installs the diapire that holds cavity lid 101d on the bottom plate 101 c.

In order to further reduce the heat transferred from the evaporation chamber 101b to the compensation chamber 101a, the present invention discloses that the bottom end surface of the partition 105 departing from the cavity cover 101d and the top end of the third capillary structure 104b deviate from the end surface contact of the bottom plate 101c, and the position of the partition 105 for contacting the third capillary structure 104b is provided with a hollow second channel 105a.

Further, the utility model discloses a still set up on the diapire of cavity lid 101d and press and establish groove 101d-2 to the pressure that establishes on bottom plate 101c third capillary structure 104b, as shown in fig. 6, be convenient for the location installation of third capillary structure 104 b.

Specifically, the third capillary structure 104b completely lays the bottom end of the compensation chamber 101a, and extends to a part of the evaporation chamber 101 b.

In some embodiments, as shown in fig. 4, evaporator 100 further comprises heat absorption pad 107, and heat absorption pad 107 is disposed on top of chamber cover 101 d. Specifically, the heat absorbing pad 107 is made of polymer gel, purified water, glycerin, or the like. The arrangement of the heat absorption pad 107 reduces heat flow of part of heat leakage to the compensation chamber 101a in the starting stage of the evaporator 100, effectively solves the influence of heat leakage, and prevents the liquid working medium in the compensation chamber 101a from being gasified to form reverse heat flow.

In some embodiments, the evaporation chamber 101b is further provided with a second installation through hole for communicating with the gas pipe 108, and the gas pipe 108 is used for communicating with the gas outlet of the evaporator 100 and the gas inlet of the condenser 200.

Along the direction from the end of the evaporation chamber 101b connected with the gas pipe 108 to the other end, the cross section of the evaporation chamber 101b is gradually reduced, as shown in fig. 8, that is, the space connected with the gas pipe 108 is larger than the space at the other end, which is beneficial to forming stronger gas pressure difference, so that the gas can rapidly flow into the gas pipe 108, and the operation is more stable.

Another aspect of the present invention provides a loop heat pipe 1000, comprising a liquid inlet pipe 102 and a gas pipe 108, and an evaporator 100 as described in any of the above embodiments.

The compensation chamber 101a communicates with the liquid inlet pipe 102, and the evaporation chamber 101b communicates with the gas pipe 108.

It should be noted that a condenser 200 may also be provided, the liquid working medium outlet of the condenser 200 is communicated with the liquid inlet pipe 102, and the gas inlet of the condenser 200 is communicated with the gas pipe 108. When the evaporator is used, the evaporation chamber 101b in the evaporator 100 absorbs heat of an external heating element such as a chip and the like, so that an internal working medium is gasified, the gasified working medium flows to the condenser 200 from the gas pipe 108, and is cooled by an external fan and the like to form a liquid state, under the action of a pressure difference formed by the first capillary structure 103 and the capillary structure assembly 104, the liquid state flows back to the compensation chamber 101a of the evaporator 100 through the liquid inlet pipe 102, and then flows to the evaporation chamber 101b through the capillary structure assembly 104, and the liquid state working medium is heated and gasified to the condenser 200 in the evaporation chamber 101b through the heating element, so that the circulation operation is realized.

It should be understood that fins and the like may be provided instead of the condenser 200, and the present invention is only limited to the structure capable of realizing condensation.

Since the present invention provides a loop heat pipe 1000 including the evaporator 100 in any of the above embodiments, the beneficial effects of the evaporator 100 are all that the present invention discloses a loop heat pipe 1000 includes.

It should be noted that the terms indicating the orientation, such as bottom end or top end, are set in the direction of fig. 3 in the specification, and are not intended to have other specific meanings for convenience of description.

It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrases "comprising one of the elements 8230 \8230;" does not exclude the presence of additional like elements in an article or device comprising the same element.

The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the core concepts of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims (10)

1. An evaporator (100) comprising:

the evaporator comprises an evaporator main body (101), wherein a partition plate (105) is arranged in the evaporator main body (101) to divide an inner cavity of the evaporator main body (101) into an evaporation chamber (101 b) and a compensation chamber (101 a), and a communication port (105 b) for communicating the evaporation chamber (101 b) with the compensation chamber (101 a) is formed in the partition plate (105); and

a heat insulation layer (106) arranged in the compensation chamber (101 a), wherein the liquid working medium in the compensation chamber (101 a) can flow into the evaporation chamber (101 b) through the heat insulation layer (106), and the heat insulation layer (106) is used for at least blocking a part of heat flow entering the compensation chamber (101 a) from the communication port (105 b).

2. The evaporator as recited in claim 1, further comprising a capillary structure assembly (104);

one part of the side wall of the heat insulation layer (106) is abutted against or connected with the inner wall of the compensation chamber (101 a), the other part of the side wall has a preset gap with the inner wall of the compensation chamber (101 a), the capillary structure assembly (104) fills the preset gap and the communication port (105 b), and the capillary structure assembly (104) extends into the evaporation chamber (101 b).

3. An evaporator according to claim 2, wherein the capillary structure assembly (104) is in contact with a first capillary structure (103) in a liquid inlet pipe (102) of the loop heat pipe (1000), the liquid inlet pipe (102) is used for communicating with the compensation chamber (101 a), and the capillary force of the capillary structure assembly (104) is greater than that of the first capillary structure (103).

4. An evaporator according to claim 3 wherein the capillary structure assembly (104) comprises a second capillary structure (104 a) and a third capillary structure (104 b);

the second capillary structure (104 a) is in contact with the first capillary structure (103);

the third capillary structure (104 b) is in contact with the second capillary structure (104 a);

the capillary force of the second capillary structure (104 a) is greater than the capillary force of the first capillary structure (103), the capillary force of the third capillary structure (104 b) is greater than the capillary force of the second capillary structure (104 a), and the third capillary structure (104 b) fills from the compensation chamber (101 a) and passes through the communication port (105 b) into the evaporation chamber (101 b).

5. The evaporator (100) of claim 4, wherein the second capillary structure (104 a) is tubular, and an inner wall is sleeved outside the liquid inlet pipe (102); and/or

The evaporator further comprises an air blocking barrier arranged on the periphery of the second capillary structure (104 a) close to the wall surface of the compensation chamber (101 a) so as to prevent heat leakage at the contact part of the second capillary structure (104 a) and the compensation chamber (101 a).

6. The evaporator (100) of claim 4, wherein the insulation layer (106) is disposed on an end face of the third capillary structure (104 b) contacting the second capillary structure (104 a), and a portion of a side wall of the insulation layer (106) is in contact with the second capillary structure (104 a);

the thermal insulation layer (106) is made of a material with low thermal conductivity.

7. The evaporator (100) of claim 4, wherein the evaporator body (101) comprises a bottom plate (101 c) and a cavity cover (101 d);

the cavity cover (101 d) is arranged on the bottom plate (101 c) in a sealing manner, and a hollow first channel (101 d-1) is arranged at the position where the cavity cover (101 d) is connected with the bottom plate (101 c);

the baffle (105) is connected on the cavity lid (101 d), and the baffle (105) deviates from the end face of the bottom end of the cavity lid (101 d) and the end face contact of the top end of the third capillary structure (104 b) deviating from the bottom plate (101 c), and the position of the baffle (105) for contacting the third capillary structure (104 b) is provided with a hollow second channel (105 a).

8. The evaporator (100) of claim 7, further comprising a heat absorption pad (107); the heat absorption pad (107) is covered at the top end of the cavity cover (101 d); and/or

And a pressing groove (101 d-2) for pressing the third capillary structure (104 b) to the bottom plate (101 c) is formed in the bottom wall of the cavity cover (101 d).

9. The evaporator (100) of any one of claims 1 to 8, wherein the evaporation chamber (101 b) is further provided with a mounting through hole for communicating with a gas pipe (108) of the loop heat pipe (1000),

the cross-section of the evaporation chamber (101 b) is gradually reduced along the direction from the end of the evaporation chamber (101 b) connecting the gas pipe (108) to the other end.

10. A loop heat pipe (1000) comprising a liquid inlet pipe (102) and a gas pipe (108) and an evaporator (100) according to any of claims 1-9;

the compensation chamber (101 a) is communicated with the liquid inlet pipe (102), and the evaporation chamber (101 b) is communicated with the gas pipe (108).

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