CN211782959U - Pressure overload protection's phase transition heat-retaining plate - Google Patents
Pressure overload protection's phase transition heat-retaining plate Download PDFInfo
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- CN211782959U CN211782959U CN201922093102.3U CN201922093102U CN211782959U CN 211782959 U CN211782959 U CN 211782959U CN 201922093102 U CN201922093102 U CN 201922093102U CN 211782959 U CN211782959 U CN 211782959U
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- heat storage
- interface channel
- cylindrical interface
- change heat
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
Abstract
The utility model provides a pair of pressure overload protection's phase change heat storage plate can be within the pressure control that phase change heat storage plate during operation bore it, has improved phase change heat storage plate's reliability and life, can effectively avoid structural deformation or PCM to reveal the product trouble that causes. The phase-change heat storage plate comprises a phase-change heat storage shell, a phase-change material, a piston, a sleeve, a spring, a sealing ring and a valve body; the phase-change heat storage shell is provided with an inwards-concave cylindrical interface channel, the end part of the inner side of the cylindrical interface channel is provided with an annular bulge, the inner wall of the cylindrical interface channel, which is close to the end part of the outer side, is provided with a sealing ring mounting groove for mounting a sealing ring, and the end part of the outer side is provided with an annular groove; the phase-change material is filled in all the spaces except the cylindrical interface channel in the phase-change heat storage shell; and the piston and the sleeve are sequentially and coaxially arranged in the cylindrical interface channel from top to bottom.
Description
Technical Field
The utility model belongs to machine carries electronic equipment heat management field relates to a pressure overload protection's phase transition heat storage plate.
Background
A phase change thermal storage panel is a thermal management device formed by sealing a phase change material into a housing, and the surface of the housing is in contact with a heat generating electronic component in engineering applications. The electronic element is subjected to thermal management by utilizing the characteristic that the Phase Change Material (PCM) has almost the same temperature when undergoing phase change and can absorb (or emit) a large amount of heat. For many compact or far-end-mounted airborne electronic devices, the heat management modes such as air cooling or liquid cooling cannot be used due to the limitation of space and mounting environment conditions, and the heat dissipation requirements cannot be met only by natural heat dissipation, so that the phase change heat storage plate is a very effective heat management device.
The PCM is used as a heat storage medium, the PCM is transformed from a solid state to a liquid state when being melted near a melting point, the density of the PCM is reduced, the volume is obviously expanded, and the shell body bears the internal pressure of the PCM filled in the shell body. The problem of the PCM expanding due to heat absorption can be overcome by vacuum filling when the PCM is in a liquid state, but when the PCM becomes a solid state, the volume is shrunk, a certain negative pressure is generated inside the shell, and the shell can bear the pressure of the external atmospheric pressure. Both of these conditions may cause deformation of the housing, adversely affect the sealing and reliability of the phase change heat storage plate, reduce the life of the heat storage plate, and even cause PCM leakage, causing malfunction of the electronic device.
SUMMERY OF THE UTILITY MODEL
In order to overcome the adverse effect that phase change heat storage plate stored, heat release in-process volume expansion, shrink brought at PCM, the utility model provides a pressure overload protection's phase change heat storage plate can solve this problem, makes pressure or vacuum in the phase change heat storage plate inject the within range that shell strength allows, has improved its reliability and life, has avoided PCM to reveal the problem that leads to arousing electronic equipment to break down simultaneously.
The utility model discloses a concrete technical scheme as follows:
the utility model provides a pressure overload protection phase-change heat storage plate, which comprises a phase-change heat storage shell, a phase-change material, a piston, a sleeve, a spring, a sealing ring and a valve body;
the phase-change heat storage shell is provided with an inwards-concave cylindrical interface channel, the end part of the inner side of the cylindrical interface channel is provided with an annular bulge, and the end part of the outer side of the cylindrical interface channel is provided with an annular groove;
the phase-change material is filled in all the spaces in the phase-change heat storage shell except the cylindrical interface channel (specifically, the phase-change material is filled in all the spaces in the phase-change heat storage shell except the cylindrical interface channel when the phase-change material is in a solid state);
the valve body is coaxially arranged in the cylindrical interface channel and comprises a supporting rod, a middle cover, a base body and an end cover which are sequentially connected;
the end cover is positioned in the annular groove and is fixedly connected with the annular groove;
the sealing ring is clamped on the sealing ring mounting groove, and the sealing ring divides the space between the base body and the piston and the space between the base body and the end cover into an upper chamber and a lower chamber;
the middle cover and the end cover are both provided with at least one vent hole;
the piston is a revolving body structure and is positioned in the cylindrical interface channel, one end face of one side of the piston is contacted with the annular bulge, the end face of the other side of the piston is connected with one end of the sleeve, and the other end of the sleeve is coaxially sleeved on the supporting rod; the piston can slide in the cylindrical interface channel along the axis under the action of pressure change inside and outside the phase-change heat storage shell, and extrusion stress exists between the piston and the wall surface of the cylindrical interface channel, so that the piston has a sealing effect on a phase-change material in the phase-change heat storage shell;
the spring is sleeved on the supporting rod, one end of the spring is connected with one end face of the sleeve sleeved on the supporting rod, and the other end of the spring is connected with the middle cover.
Furthermore, in order to enable the sleeve to smoothly slide in the cylindrical interface channel along the axial direction, the outer wall of the sleeve is in clearance fit with the inner wall of the cylindrical interface channel, and the inner wall of the sleeve is in clearance fit with the outer wall of the supporting rod.
Furthermore, clearance fit is formed between the middle cover and the cylindrical interface channel.
Further, in order to ensure air tightness, the end cover and the annular groove are fixed in a welding mode.
Furthermore, the phase-change heat storage shell is made of metal materials, and the piston is made of rubber materials.
Furthermore, the number of the vent holes on the middle cover and the end cover is 2, and the vent holes are uniformly distributed along the circumferential direction.
Further, the sealing ring is an O-ring.
The utility model has the advantages that:
the utility model provides a pair of pressure overload protection's phase transition heat storage board can be within the pressure control that phase transition heat storage board during operation bore it. When a Phase Change Material (PCM) endothermically melts in an increased volume, a positive pressure inside it may be limited; when a Phase Change Material (PCM) solidifies exothermically, the negative pressure inside it may be limited. The utility model provides high phase change heat storage plate's reliability and life can effectively avoid structural deformation or Phase Change Material (PCM) to reveal the product trouble that causes.
Drawings
FIG. 1 is a schematic cross-sectional view of an embodiment;
fig. 2 is a cross-sectional view of a phase change heat storage plate housing;
fig. 3 is a cross-sectional view of the valve body.
The reference numbers are as follows:
1-a phase change heat storage plate shell, 11-a cylindrical interface channel, 111-an annular bulge, 112-a sealing ring installation groove and 113-an annular groove;
2-Phase Change Material (PCM);
3-a piston;
4-a sleeve;
5-a spring;
6-sealing ring;
7-valve body, 71-support rod, 72-middle cover, 73-base body, 74-end cover and 75-vent hole.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The utility model provides a pair of pressure overload protection's phase change heat storage plate's concrete implementation structure is constituteed, as shown in fig. 1, it is by phase change heat storage plate casing 1, phase change material 2, piston 3, sleeve 4, spring 5, sealing washer 6 and valve body 7 are constituteed.
As shown in fig. 2, the phase change heat storage housing 1 has an inwardly recessed cylindrical interface channel 11 of a revolving body, the inner side end of the cylindrical interface has an annular protrusion 111, the inner wall of the cylindrical interface channel near the outer side end is provided with a sealing ring mounting groove 112, and the outer side end has an annular groove 113;
when the phase-change material 2 is in a solid state, all the spaces except the cylindrical interface channel 11 in the phase-change heat storage shell 1 are filled;
the valve body 7 is a metal revolving body, is coaxially installed in the cylindrical interface channel 11, and sequentially comprises four structural features, namely a support rod 71, a middle cover 72, a base body 73 and an end cover 74, wherein the end cover is positioned in the annular groove 113 and is fixedly connected with the annular groove 113 (in the embodiment, in order to ensure air tightness, a welding fixing mode is selected here); an annular cavity is formed among the base body 73, the middle cover, the end cover and the cylindrical interface channel; the sealing ring 6 is clamped on the sealing ring mounting groove 112, and the sealing ring 6 divides the space between the base body 73 and the piston 3 and the space between the base body 73 and the end cover 74 into an upper chamber and a lower chamber; the sealing ring in the embodiment is an O-shaped sealing ring;
the middle cover 72 and the end cover 74 are respectively provided with at least one vent hole 75 (in this embodiment, the number of the vent holes on the middle cover and the end cover is 2, and the vent holes are uniformly distributed along the circumferential direction), the sealing ring 6 deforms when bearing an air pressure of more than 3Mpa and is separated from the cylindrical interface channel 11, so that the upper chamber and the lower chamber are communicated, and partial air is discharged outwards through the vent holes on the end cover, so that the internal pressure of the phase change heat storage plate is within the safe pressure.
As shown in fig. 3. The safe pressure which can be borne by the shell of the phase change heat storage plate is assumed to be less than or equal to 3 Mpa.
The piston 3 is made of rubber, has a revolving body structure, is tightly attached to the annular bulge 111, is coaxial with the cylindrical interface channel 11, can slide along the axis in the cylindrical interface channel 11 due to the change of the internal and external pressure of the phase change heat storage shell, and has extrusion stress with the wall surface of the cylindrical interface channel 11, thereby having a sealing effect on the phase change material 2 in the phase change heat storage shell;
the sleeve 4 is a hollow cylindrical rotary body, is made of metal, is coaxial with the cylindrical interface channel 11, one end is tightly attached to the piston 3, the other end is sleeved on the supporting rod 71 of the valve body 7, the outer wall of the sleeve 4 is in clearance fit with the cylindrical interface channel 11, and the inner wall of the sleeve 4 is also in clearance fit with the supporting rod 71; the spring 5 is sleeved on the supporting rod, one end of the spring 5 is connected with one end face of the supporting rod 71, which is sleeved with the sleeve 4, the other end of the spring is connected with the middle cover 72, and the middle cover 72 is in clearance fit with the cylindrical interface channel 11;
because phase change material 2 has been in when solid-state full all the space in the phase change heat-retaining casing except that tube-shape interface passageway 11, the phase change material of phase change heat-retaining casing 1 inside absorbs heat and melts, when the volume increases, promote piston 3 outwards motion, piston 3 drives sleeve 4 compression spring 5, make the confined space compression between piston 3 and the sealing washer 6 simultaneously, when pressure increase to more than 3MPa, sealing washer 6 breaks away from with tube-shape interface passageway 11, outwards discharge some air through the air vent on the end cover, thereby make phase change heat storage plate internal pressure within safe pressure. When the heat released by the phase-change material 2 is changed from liquid to solid, the volume is shrunk, negative pressure occurs in the phase-change heat storage shell 1 and the closed space, when the negative pressure is increased to be more than 3MPa, the sealing ring 6 is separated from the base body 73 under the action of external atmospheric pressure, and partial gas is sucked, so that the negative pressure in the phase-change heat storage plate is within the safe pressure.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (7)
1. The utility model provides a pressure overload protection's phase change heat storage plate which characterized in that: the phase-change heat storage device comprises a phase-change heat storage shell (1), a phase-change material (2), a piston (3), a sleeve (4), a spring (5), a sealing ring (6) and a valve body (7);
the phase change heat storage shell (1) is provided with an inwards-concave cylindrical interface channel (11), the end part of the inner side of the cylindrical interface channel (11) is provided with an annular bulge (111), the inner wall of the cylindrical interface channel (11) close to the end part of the outer side is provided with a sealing ring installation groove (112), and the end part of the outer side is provided with an annular groove (113);
the phase-change material (2) is filled in all the spaces except the cylindrical interface channel (11) in the phase-change heat storage shell (1);
the valve body (7) is coaxially arranged in the cylindrical interface channel (11), and the valve body (7) comprises a support rod (71), a middle cover (72), a base body (73) and an end cover (74) which are sequentially connected;
the end cover (74) is positioned in the annular groove (113) and is fixedly connected with the annular groove (113);
the sealing ring (6) is clamped on the sealing ring mounting groove (112), and the sealing ring (6) divides a space between the base body (73) and the piston (3) and a space between the base body (73) and the end cover (74) into an upper chamber and a lower chamber;
the middle cover (72) and the end cover (74) are both provided with at least one vent hole (75);
the piston (3) is positioned in the cylindrical interface channel (11), one end face of one side of the piston (3) is in contact with the annular bulge (111), the end face of the other side of the piston is connected with one end of the sleeve (4), and the other end of the sleeve (4) is coaxially sleeved on the support rod (71);
the spring (5) is sleeved on the support rod (71), one end of the spring (5) is connected with one end face of the sleeve (4) sleeved on the support rod (71), and the other end of the spring is connected with the middle cover (72).
2. The pressure overload protected phase change thermal storage plate of claim 1, wherein: the outer wall of the sleeve (4) is in clearance fit with the inner wall of the cylindrical interface channel (11), and the inner wall of the sleeve (4) is in clearance fit with the outer wall of the support rod (71).
3. The pressure overload protected phase change thermal storage plate of claim 2, wherein: the middle cover (72) is in clearance fit with the cylindrical interface channel (11).
4. The pressure overload protected phase change thermal storage plate of claim 3, wherein: the end cover (74) and the annular groove (113) are fixed in a welding mode.
5. The pressure overload protected phase change thermal storage plate of claim 4, wherein: the phase-change heat storage shell (1) is made of a metal material, and the piston (3) is made of a rubber material.
6. The pressure overload protected phase change thermal storage plate of claim 5, wherein: the number of the vent holes (75) on the middle cover (72) and the end cover (74) is 2, and the vent holes are uniformly distributed along the circumferential direction.
7. The pressure overload protected phase change thermal storage plate of claim 5, wherein: the sealing ring (6) is an O-shaped sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922093102.3U CN211782959U (en) | 2019-11-28 | 2019-11-28 | Pressure overload protection's phase transition heat-retaining plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922093102.3U CN211782959U (en) | 2019-11-28 | 2019-11-28 | Pressure overload protection's phase transition heat-retaining plate |
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| Publication Number | Publication Date |
|---|---|
| CN211782959U true CN211782959U (en) | 2020-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922093102.3U Active CN211782959U (en) | 2019-11-28 | 2019-11-28 | Pressure overload protection's phase transition heat-retaining plate |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113097599A (en) * | 2021-04-07 | 2021-07-09 | 华北电力大学 | Passive battery thermal regulator based on super-cooled phase-change material, method and management system |
| CN113911400A (en) * | 2021-11-02 | 2022-01-11 | 之江实验室 | Heat storage device of micro-nano satellite system |
| CN114560164A (en) * | 2022-03-31 | 2022-05-31 | 中国科学院空间应用工程与技术中心 | Safe phase change unit, safe phase change device and preparation method |
-
2019
- 2019-11-28 CN CN201922093102.3U patent/CN211782959U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113097599A (en) * | 2021-04-07 | 2021-07-09 | 华北电力大学 | Passive battery thermal regulator based on super-cooled phase-change material, method and management system |
| CN113911400A (en) * | 2021-11-02 | 2022-01-11 | 之江实验室 | Heat storage device of micro-nano satellite system |
| CN113911400B (en) * | 2021-11-02 | 2022-12-09 | 之江实验室 | Heat storage device of micro/nano satellite system |
| CN114560164A (en) * | 2022-03-31 | 2022-05-31 | 中国科学院空间应用工程与技术中心 | Safe phase change unit, safe phase change device and preparation method |
| CN114560164B (en) * | 2022-03-31 | 2023-11-03 | 中国科学院空间应用工程与技术中心 | Safety phase change unit, safety phase change device and preparation method |
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