CN217088460U

CN217088460U - Heat transfer structure and cold platform device

Info

Publication number: CN217088460U
Application number: CN202220065589.3U
Authority: CN
Inventors: 全加; 陈厚磊; 刘彦杰; 刘欣彤; 赵密广; 唐清君
Original assignee: Technical Institute of Physics and Chemistry of CAS
Current assignee: Technical Institute of Physics and Chemistry of CAS
Priority date: 2022-01-11
Filing date: 2022-01-11
Publication date: 2022-07-29
Anticipated expiration: 2032-01-11

Abstract

The present disclosure relates to the field of heat dissipation technologies, and in particular, to a heat transfer structure and a cold platform device. This heat transfer structure includes cold finger, heat conduction area, cold drawing, vacuum cover, vacuum flange and bearing structure, the cold head portion of cold finger passes through the heat conduction area with the cold drawing is connected, the vacuum flange sets up on the hot tip, the cold drawing is used for installing the detector, the cold drawing passes through bearing structure installs on the vacuum flange, the vacuum cover is installed on the vacuum flange, the vacuum cover is detained and is put one side of cold drawing for form vacuum environment. This structure avoids the vacuum flange to warp through the vacuum flange who chooses for use the high strength material such as titanium alloy or stainless steel to make to guarantee vacuum environment's stability, support structure also can install on the vacuum flange simultaneously, thereby guarantee support structure's stability.

Description

Heat transfer structure and cold platform device

Technical Field

The present disclosure relates to the field of heat dissipation technologies, and in particular, to a heat transfer structure and a cold platform device.

Background

With the development of the aerospace technology, space detectors are gradually increased, and the area array of the detectors is gradually increased. Because part of the detectors work under the low-temperature condition and the detectors are sensitive to micro vibration, a stable vacuum working environment needs to be provided for the detectors in order to ensure the detection precision of the detectors.

Because the detector can generate heat during working, the accumulation of heat can cause the working temperature of the detector to be influenced, and further the detection effect of the detector is influenced, a cold platform structure and a stable vacuum environment are required to be designed to dissipate heat of the detector with a large area array, and the detector is ensured to reach an ideal low-temperature; meanwhile, in order to improve the detection precision of the detector, the influence of thermal stress deformation and micro vibration on the detector at low temperature of the cold finger cold end is guaranteed to be reduced through a related structure.

SUMMERY OF THE UTILITY MODEL

To solve the above technical problem or at least partially solve the above technical problem, the present disclosure provides a heat transfer structure and a cold platform device.

In a first aspect, the present disclosure provides a heat transfer structure, including cold finger, heat conduction band, cold drawing, vacuum cover, vacuum flange and bearing structure, the cold head portion of cold finger passes through the heat conduction band with the cold drawing is connected, the vacuum flange sets up on the hot junction flange, the cold drawing is used for installing the detector, the cold drawing passes through bearing structure installs on the vacuum flange, the vacuum cover is installed on the vacuum flange, the vacuum cover is arranged in one side of cold drawing for form vacuum environment.

Optionally, an installation groove is formed in the vacuum flange, and an annular sealing ring and a vacuum cover are placed in the installation groove to form a vacuum condition.

Optionally, one end of each heat conduction strip is connected with the cold head, the other end of each heat conduction strip is connected with the cold plate, the number of the heat conduction strips is multiple, and the multiple heat conduction strips are arranged along the circumferential direction of the cold finger.

Optionally, the heat conduction belt is a flexible heat conduction belt.

Optionally, both ends of the supporting structure are provided with heat insulating gaskets.

Optionally, the support structure is a hollow bar structure.

Optionally, the number of the support structures is multiple, and the multiple support structures are arranged along the circumferential direction of the cold finger.

Optionally, the support structure is an inclined support rod, and the inclined support rod is obliquely arranged between the cold plate and the vacuum flange.

Optionally, the support structure is a straight support rod, the straight support rod is perpendicular to the cold plate, and the cold plate and the vacuum flange are arranged in parallel.

Optionally, the support structure is a tapered support rod, and the tapered support rod is a conical structure.

In a second aspect, the present disclosure provides a cold platform device comprising a heat transfer structure as described above.

Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages:

the heat transfer structure provided by the disclosure has the advantages that the vacuum flange made of high-strength materials such as titanium alloy or stainless steel is not easy to deform, so that the stability of a vacuum environment is ensured, and meanwhile, the support structure can also be arranged on the vacuum flange, so that the stability of the support structure is ensured.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

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

FIG. 1 is a cross-sectional view of a heat transfer structure according to an embodiment of the present disclosure;

FIG. 2 is a top view of a heat transfer structure according to an embodiment of the present disclosure;

FIG. 3 is a schematic structural view of an inclined support rod in a heat transfer structure according to an embodiment of the present disclosure;

FIG. 4 is a schematic structural view of a straight support bar in a heat transfer structure according to an embodiment of the present disclosure;

fig. 5 is a schematic structural view of a tapered support rod in a heat transfer structure according to an embodiment of the disclosure.

Wherein, 1, a heat conducting strip; 2. a cold plate; 31. a cold head; 32. a hot end flange; 4. a vacuum flange; 41. mounting grooves; 5. a heat insulating spacer; 61. inclining the support rod; 62. a straight support bar; 63. A tapered support rod.

Detailed Description

In order that the above objects, features and advantages of the present disclosure may be more clearly understood, aspects of the present disclosure will be further described below. It should be noted that the embodiments and features of the embodiments of the present disclosure may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced in other ways than those described herein; it is to be understood that the embodiments disclosed in the specification are only a few embodiments of the present disclosure, and not all embodiments.

Based on this, this embodiment provides a heat transfer structure and cold platform device, makes the vacuum flange through selecting for use high strength materials such as titanium alloy or stainless steel, non-deformable to guarantee vacuum environment's stability, support structure also can install on the vacuum flange simultaneously, thereby guarantee support structure's stability. This is illustrated in detail by the following specific examples:

referring to fig. 1 and 2, a heat transfer structure provided in this embodiment includes a cold finger, a heat conduction band 1, a cold plate 2, a vacuum cover, a vacuum flange 4 and a support structure, a cold head 31 of the cold finger is connected to the cold plate 2 through the heat conduction band 1, the vacuum flange 4 is disposed on a hot end flange 32, the cold plate 2 is used for mounting a detector, the cold plate 2 is mounted on the vacuum flange 4 through the support structure, the vacuum cover is mounted on the vacuum flange 4, and the vacuum cover is disposed on one side of the cold plate 2 and used for forming a vacuum environment. Because the hot end flange 32 is better for heat conductivity, generally adopts the copper material to make, and intensity is not high, and easy deformation, through selecting for use vacuum flange 4 that high strength material such as titanium alloy or stainless steel made, non-deformable to guarantee vacuum environment's stability, support structure also can install on vacuum flange 4 simultaneously, thereby guarantee support structure's stability.

In some embodiments, the vacuum flange 4 is provided with a mounting groove 41, a ring-shaped sealing ring is disposed in the mounting groove 41, and the vacuum sealing performance between the vacuum flange 4 and the vacuum cover can be better through the mounting groove 41 and the ring-shaped sealing ring.

In some embodiments, one end of the heat conduction band 1 is connected with the cold head 31, the other end is connected with the cold plate 2, the number of the heat conduction band 1 is multiple, the plurality of heat conduction bands 1 are arranged along the circumferential direction of the cold finger, the detector can be cooled rapidly and effectively through the arrangement of the plurality of heat conduction bands 1, and the connection positions of the heat conduction bands 1 and the cold plate 2 can be selected according to the actual high-temperature point of the cold plate 2 so as to achieve better temperature uniformity of the surface of the cold plate 2.

In further embodiment, heat conduction area 1 is flexible heat conduction area, setting through flexible heat conduction area, can make cold head 31 that cold finger produce in refrigerated little vibration and low temperature down thermal stress deformation can not directly transmit cold drawing 2 on, but utilize the flexible material's of flexible heat conduction area 1 self characteristic to offset, also can utilize the heat conduction characteristic of flexible heat conduction area 1 self simultaneously, the heat that transmits the detector on cold drawing 2 is derived fast, and transmit the low temperature of cold head 31 to the detector on, cool down the work to the detector, thereby guarantee that the detector can keep self throughout in the operational environment of ideal.

It should be noted that, a vacuum cover is arranged on the hot end flange 32, and the vacuum cover is buckled on one side of the cold plate 2 to form a vacuum environment, so that the low temperature of the cold head 31 can be directly cooled by the heat conduction band 1 and the cold plate 2, and the detector is not consumed by air, and the cooling efficiency can be remarkably improved.

With continued reference to fig. 1 to 5, the two ends of the support structure are both provided with heat insulation spacers 5, and the arrangement of the heat insulation spacers 5 can reduce the transmission of the low temperature of the cold plate 2 from the support structure to the outside, thereby reducing the cooling efficiency of the cold finger on the detector.

In some embodiments, the support structure is a hollow rod structure, which effectively reduces the weight and cost of the overall heat transfer structure, and also reduces the amount of heat transferred from the support structure to the cold plate 2, thereby ensuring the cooling efficiency of the cold finger on the detector.

In a further embodiment, the number of the support structures is multiple, and the multiple support structures are arranged along the circumferential direction of the cold finger, so that the detector, the cold plate 2 and the vacuum flange 4 can be connected more stably and reliably.

Referring to fig. 3, the support structure is an inclined support rod 61, the inclined support rod 61 is obliquely arranged between the cold plate 2 and the vacuum flange 4, and the strength of the overall structure in the horizontal pushing direction can be better and stronger shearing force can be resisted by connecting the cold plate 2 and the vacuum flange 4 through the inclined support rod 61.

Referring to fig. 4, the supporting structure is a straight supporting rod 62, the straight supporting rod 62 is perpendicular to the cold plate 2, the cold plate 2 and the vacuum flange 4 are arranged in parallel, the straight supporting rod 62 is used for connecting the cold plate 2 and the vacuum flange 4, so that the occupied space of the whole structure is smaller, the influence on the arrangement of other parts is prevented, and the avoidance of other parts is more convenient.

Referring to fig. 5, the supporting structure is a tapered supporting rod 63, the tapered supporting rod 63 is a conical structure, the cold plate 2 and the hot end portion are connected through the tapered supporting rod 63, so that the occupied space can be reduced, and meanwhile, the connection strength is increased to a certain degree.

The present disclosure provides a cold platform device comprising a heat transfer structure as described above.

The specific implementation manner and implementation principle are the same as those of the above embodiments, and can bring about the same or similar technical effects, and therefore, detailed description is not repeated here, and specific reference may be made to the description of the above heat transfer structure embodiment.

It should be noted that, in this document, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, 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 process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The foregoing are merely exemplary embodiments of the present disclosure, which enable those skilled in the art to understand or practice the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a heat transfer structure, its characterized in that includes cold finger, heat conduction area (1), cold plate (2), vacuum cover, vacuum flange (4) and bearing structure, cold head (31) of cold finger pass through heat conduction area (1) with cold plate (2) are connected, vacuum flange (4) set up on hot junction flange (32), cold plate (2) are used for installing the detector, cold plate (2) pass through bearing structure installs on vacuum flange (4), the vacuum cover is installed on vacuum flange (4), the vacuum cover is arranged in one side of cold plate (2) for form vacuum environment.

2. The heat transfer structure according to claim 1, wherein the vacuum flange (4) is provided with a mounting groove (41), and the vacuum cover is mounted in the mounting groove (41).

3. The heat transfer structure according to claim 1, wherein the heat conduction band (1) is connected at one end thereof to the cold head (31) and at the other end thereof to the cold plate (2), the number of the heat conduction band (1) is plural, and the plural heat conduction bands (1) are arranged along the circumferential direction of the cold finger.

4. A heat transfer structure according to claim 3, characterized in that the heat conducting strip (1) is a flexible heat conducting strip.

5. A heat transfer structure according to claim 1, characterised in that the support structure is provided with insulating spacers (5) at both ends.

6. A heat transfer structure as claimed in claim 1, wherein the support structure is a hollow bar structure.

7. The heat transfer structure of claim 6, wherein the number of the support structures is plural, and the plural support structures are arranged along a circumferential direction of the cold finger.

8. Heat transfer structure according to any of claims 1 to 7, characterized in that the support structure is an inclined support bar (61), the inclined support bar (61) being arranged obliquely between the cold plate (2) and the hot side flange (32).

9. A heat transfer structure according to any of claims 1 to 7, characterized in that the support structure is a straight support bar (62), the straight support bar (62) being arranged perpendicular to the cold plate (2) and the cold plate (2) being arranged parallel to the hot side flange (32).

10. Heat transfer structure according to any of claims 1 to 7, characterized in that the support structure is a tapered support bar (63), the tapered support bar (63) being of conical configuration.

11. A cold platform device comprising a heat transfer structure according to any one of claims 1 to 10.