CN220436816U - GM refrigerator - Google Patents
GM refrigerator Download PDFInfo
- Publication number
- CN220436816U CN220436816U CN202321801994.8U CN202321801994U CN220436816U CN 220436816 U CN220436816 U CN 220436816U CN 202321801994 U CN202321801994 U CN 202321801994U CN 220436816 U CN220436816 U CN 220436816U
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- Prior art keywords
- connecting sleeve
- cold head
- refrigerator
- primary
- working platform
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- 230000002093 peripheral effect Effects 0.000 claims abstract description 8
- 230000008719 thickening Effects 0.000 claims description 33
- 230000003139 buffering effect Effects 0.000 claims 2
- 238000005259 measurement Methods 0.000 abstract description 2
- 238000003466 welding Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 5
- 239000003292 glue Substances 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 238000009529 body temperature measurement Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
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Abstract
A GM refrigerator comprises a primary cold head and a secondary cold head, wherein the secondary cold head is connected to one end of the primary cold head; the outer peripheral wall of the first-stage cold head is provided with a first-stage connecting sleeve, the outer peripheral wall of the second-stage cold head is connected with a second-stage connecting sleeve, and the second-stage connecting sleeve is used for being connected with a temperature sensor; the working platform is arranged on the secondary connecting sleeve, and the surface of the working platform is a plane; the working platform is connected with the side wall cambered surface of the secondary connecting sleeve. This application is through setting up work platform in order to install temperature sensor on the second grade adapter sleeve, work platform is connected with the lateral wall cambered surface of second grade adapter sleeve to work platform's surface is the plane, and planar workstation and temperature sensor's area of contact is great in the cambered surface among the prior art of plane, thereby makes temperature sensor and the connection of second grade adapter sleeve more stable, has guaranteed temperature sensor's stable operating condition, and is comparatively stable, accurate to the measurement of refrigerator temperature, is convenient for follow-up accurate control to the refrigerator.
Description
Technical Field
The application relates to the technical field of GM refrigerators, in particular to a GM refrigerator.
Background
The GM refrigerator is a device for producing refrigeration by using continuous adiabatic expansion method, and is formed from two portions of compressor and expander. The common expander is provided with a two-stage cold head, the one-stage cold head can realize low temperature of 45K, and the two-stage cold head can realize low temperature of 10K. GM refrigerators have been widely used today, mainly in cryopumps, vacuum coating, integrated circuits, and other devices requiring a low temperature environment.
In the prior art, the connecting sleeve (flange) can be welded outside the cold head of the refrigerator, so that the cold head can be connected with external equipment, the connecting sleeve has the functions of fixing the cold head and conducting temperature, the temperature sensor can be externally connected to the connecting sleeve to realize temperature measurement of the cold head, and after the temperature sensor obtains the temperature of the cold head, the working state of the refrigerator can be controlled more accurately and timely, thereby improving the follow-up use accuracy of the refrigerator and the working efficiency of the refrigerator.
However, when the connecting sleeve is welded on the cold head, the cold head is thinner, and the welding part of the cold head and the connecting sleeve possibly causes larger deformation of the cold head, so that the connecting sleeve has errors for stable conduction, and the measuring effect of the temperature sensor is affected;
in addition, the connecting sleeve of the secondary cold head in the prior art is a disc, and when the temperature sensor is arranged on the connecting sleeve, the contact area of the cambered surface of the connecting sleeve and the temperature sensor is in point contact and more line contact, so that the temperature sensor is difficult to be arranged on the connecting sleeve, and the connection is unstable.
Disclosure of Invention
In view of this, this application provides a GM refrigerator, its second grade adapter sleeve that sets up work platform on the second grade cold head to increase temperature sensor at the area of contact with the second grade adapter sleeve, make temperature sensor can be connected with the second grade adapter sleeve better, thereby improve temperature sensor and measure the precision of cold head, can make things convenient for the staff in time, accurately know the operating condition of refrigerator.
The GM refrigerator comprises a primary cold head and a secondary cold head, wherein the secondary cold head is connected to one end of the primary cold head;
the outer peripheral wall of the primary cold head is provided with a primary connecting sleeve, the outer peripheral wall of the secondary cold head is connected with a secondary connecting sleeve, and the secondary connecting sleeve can be connected with a temperature sensor;
the secondary connecting sleeve is provided with a working platform, and the surface of the working platform is a plane;
the working platform is connected with the side wall cambered surface of the secondary connecting sleeve.
Compared with the prior art, the GM refrigerator has the advantages that the working platform is arranged on the secondary connecting sleeve so as to conveniently install the temperature sensor, the working platform is connected with the cambered surface of the side wall of the secondary connecting sleeve, the surface of the working platform is a plane, compared with the cambered surface of the connecting sleeve in the prior art, the contact area between the working platform and the temperature sensor is larger, so that the temperature sensor is more stable to be connected with the secondary connecting sleeve, the stable working state of the temperature sensor is ensured, and the temperature measurement of the refrigerator is more stable and accurate, thereby being beneficial to the follow-up accurate control of the refrigerator.
In some alternative embodiments, the working platform is disposed on a side wall of the secondary connecting sleeve, and a distance from the working platform to a center of the secondary connecting sleeve is smaller than a radius of the secondary connecting sleeve.
In some alternative embodiments, the inner wall of the secondary connecting sleeve is provided with a receiving groove arranged along the axial direction of the connecting sleeve.
In some alternative embodiments, the accommodating groove is communicated with one end of the secondary connecting sleeve, which is provided with a working platform.
In some alternative embodiments, the secondary cold head is provided with a secondary thickened portion, and the secondary thickened portion is located at a position where the secondary connecting sleeve is connected with the secondary cold head.
In some alternative embodiments, the length of the secondary thickening is greater than the length of the secondary connection sleeve.
In some optional embodiments, a secondary buffer part is arranged at one end of the secondary thickening part, which is far away from the working platform, and the surface of the secondary buffer part is an inclined plane.
In some alternative embodiments, the primary cold head is provided with a primary thickening portion, and the primary thickening portion is located at a position where the primary connecting sleeve is connected with the primary cold head.
In some alternative embodiments, the length of the primary thickening is greater than the length of the primary connection sleeve.
In some alternative embodiments, one end of the primary thickening part, which is far away from the secondary cold head, is provided with a primary buffer part, and the surface of the primary buffer part is an inclined plane.
Therefore, the application has at least the following technical effects:
the first-stage thickening part and the second-stage thickening part are arranged at the connecting parts of the first-stage cold head and the second-stage cold head and the first-stage connecting sleeve and the second-stage connecting sleeve respectively, so that the connecting sleeve and the cold head are not easy to be subjected to welding deformation when the connecting sleeve is welded with the cold head, and the temperature conduction of the connecting sleeve is stable and accurate;
the working platform is arranged on the secondary connecting sleeve, the surface of the working platform is a plane, and the working platform is connected to the side wall of the secondary connecting sleeve, so that the temperature sensor is connected with the secondary connecting sleeve, the contact surface between the plane of the working platform and the temperature sensor is larger, the connection effect of the temperature sensor and the secondary connecting sleeve is more stable, and the temperature sensor is more accurate and stable in measurement;
through be equipped with the holding tank on the second grade adapter sleeve inner wall, when the second grade adapter sleeve is connected on the second grade cold head, set up the heat conduction glue in the holding tank to can improve the high efficiency of the temperature transmission between second grade cold head and the second grade adapter sleeve, make temperature sensor more accurate when measuring the temperature of second grade cold head.
Drawings
Fig. 1 is a schematic perspective view of a GM refrigerator according to an embodiment of the present disclosure;
FIG. 2 is a schematic side view of a GM refrigerator provided according to an embodiment of the present application;
FIG. 3 is a schematic cross-sectional view of a GM refrigerator provided according to an embodiment of the present application;
fig. 4 is a schematic perspective view of a secondary connecting sleeve according to an embodiment of the present disclosure;
FIG. 5 is a schematic cross-sectional view of a secondary connection sleeve provided in an embodiment of the present application;
FIG. 6 is an enlarged schematic view of portion A of FIG. 3;
FIG. 7 is an enlarged schematic view of portion B of FIG. 3;
fig. 8 is an enlarged schematic view of part C of fig. 3.
Reference numerals: 1. a refrigerating machine;
11. a primary cold head; 12. a first-stage connecting sleeve; 13. a second-stage cold head; 14. a second-stage connecting sleeve;
111. a first-stage thickening part; 112. a first-stage buffer section;
131. a second-stage thickening part; 132. a second-stage buffer section;
141. a working platform; 142. a receiving groove; 143. and (5) mounting holes.
Detailed Description
In order to better understand the technical solutions of the present disclosure, the present disclosure will be described in detail, clearly and completely with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present disclosure.
In the description of the present application, the description of the first and second is only for the purpose of distinguishing technical features, and should not be construed as indicating or implying relative importance or implying the number of technical features indicated or the precedence of the technical features indicated.
It will be appreciated by those skilled in the art that in the disclosure of the present application, the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc. refer to an orientation or positional relationship based on that shown in the drawings, which is merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore the above terms should not be construed as limiting the present application.
The present application will be described in further detail with reference to the accompanying drawings, see for example fig. 1 to 8.
As shown in fig. 1 to 3, the present application provides a GM refrigerator, which includes a primary cold head 11 and a secondary cold head 13, where the secondary cold head 13 is connected to one end of the primary cold head 11, and the primary cold head 11 and the secondary cold head 13 are on the same axis; it should be noted that the structures and connection relationships of the rest parts of the refrigerator 1 are all in the prior art, and are not the utility model points of the present application, and are not described herein in detail;
the outer peripheral wall of the primary cold head 11 is provided with a primary connecting sleeve 12, the outer peripheral wall of the secondary cold head 13 is connected with a secondary connecting sleeve 14, and the secondary connecting sleeve 14 can be connected with a temperature sensor, so that the temperature sensor can measure the temperature of the secondary cold head 13 through the secondary connecting sleeve 14, a worker can know the temperature of the secondary cold head 13, and the working state of the refrigerator 1 can be conveniently known and adjusted; likewise, the primary connecting sleeve 12 can also be connected with a temperature sensor so as to measure the temperature of the primary cold head 11;
as shown in fig. 4 to 5, the working platform 141 is disposed on the second-stage connecting sleeve 14, the surface of the working platform 141 is a plane, and by contacting the temperature sensor with the working platform 141, the plane can increase the area of the temperature sensor and the working platform 141 compared with the cambered surface of the connecting sleeve in the prior art, thereby increasing the connection stability of the sensor and the second-stage connecting sleeve 14, ensuring the stable working state of the temperature sensor, so that the temperature measurement of the refrigerator 1 is more stable and accurate, and being beneficial to the accurate control of the refrigerator 1 in the following steps; further, the working platform 141 is connected with the side wall cambered surface of the secondary connecting sleeve 14, so that the whole volume of the refrigerator 1 is smaller, the distance between the working platform 141 and the secondary connecting sleeve 14 is closer, when the temperature sensor measures the temperature of the secondary cold head 13 through the secondary connecting sleeve 14, the heat conduction path of the secondary connecting sleeve 14 is shorter, heat loss is less, and therefore the temperature data of the secondary cold head 13 obtained by the temperature sensor is more accurate.
Further, as shown in fig. 1 and 4, the primary connecting sleeve 12 and the secondary connecting sleeve 14 each include a welding portion and an installation portion, the installation portion is connected to one end of the welding portion, the welding portion is cylindrical, the installation portion is annular, the welding portion is communicated with the installation portion, and axes of the two are on the same straight line; the inner hole diameter of the welding part is the same as that of the mounting part, and the outer wall diameter of the mounting part is larger than that of the welding part.
In another alternative embodiment of the present application, as shown in fig. 4 and 5, the working platform 141 of the secondary connecting sleeve 14 is disposed on the side wall of the secondary connecting sleeve 14, and the distance between the working platform 141 and the center of the secondary connecting sleeve 14 is smaller than the radius of the secondary connecting sleeve 14; even make second grade adapter sleeve 14 be the D style of calligraphy, because work platform 141 sets up on the lateral wall of second grade adapter sleeve 14, can make the volume of second grade adapter sleeve 14 reduce simultaneously to reduced the distance of work platform 141 from the second grade adapter sleeve 14 centre of a circle, make temperature sensor and second grade adapter sleeve 14's area of contact increase, temperature sensor and second grade cold head 13's relative distance reduces, the heat conduction route of second grade adapter sleeve 14 is shortened greatly, the heat loss reduces, thereby make temperature sensor measure the temperature data of the second grade cold head 13 of acquisition more accurate.
Further, as shown in fig. 4 and 5, the secondary connecting sleeve 14 is provided with mounting holes 143, and the working platform 141 is arranged between any two mounting holes 143 without damaging the mounting holes 143 of the secondary connecting sleeve 14; the length of the working platform 141 is smaller than the diameter of the outer wall of the secondary connecting sleeve 14, and the distance between the working platform 141 and the axis of the secondary connecting sleeve 14 is larger than the radius of the inner hole of the secondary connecting sleeve 14.
In an alternative embodiment of the present application, as shown in fig. 6 and 8, the inner wall of the secondary connection sleeve 14 is provided with a receiving groove 142 arranged in the axial direction of the connection sleeve. When the second-stage connecting sleeve 14 is connected to the second-stage cold head 13, the heat conducting glue is arranged in the accommodating groove 142, has good heat conducting performance, is excellent in dampproof, shock-resistant, corona-resistant, electric leakage-resistant and chemical medium-resistant performances, can be continuously used at-60-280 ℃ and keeps the performances, one side of the heat conducting glue is attached to the second-stage cold head 13, the other end of the heat conducting glue is attached to the second-stage connecting sleeve 14, and heat of the second-stage cold head 13 can be accurately transferred to the connecting sleeve, so that the temperature sensor is more accurate when measuring the temperature of the second-stage cold head 13 through the connecting sleeve.
Further, the depth of the receiving groove 142 is between 0.1-0.4 mm; preferably 0.2mm.
Further, as shown in fig. 8, the receiving groove 142 communicates with an end of the secondary connecting sleeve 14 where the working platform 141 is provided. Therefore, the heat-conducting glue is less blocked with the working platform 141, and the temperature can be better transferred to one end provided with the working platform 141, so that the temperature value measured by the temperature sensor is more accurate.
In another alternative embodiment of the present application, as shown in fig. 6 and 8, the secondary cold head 13 is provided with a secondary thickened portion 131, and the secondary thickened portion 131 is located at a position where the secondary connecting sleeve 14 is connected to the secondary cold head 13. Therefore, the welding part of the secondary cold head 13 can be thickened, when the secondary connecting sleeve 14 is welded on the secondary cold head 13, the deformation of the secondary cold head 13 and the secondary connecting sleeve 14 caused by welding can be reduced, the contact surface of the secondary cold head 13 and the secondary connecting sleeve 14 is stable, the temperature transmission quality is improved, and the temperature sensor is accurate when measuring the temperature of the secondary cold head 13.
Further, the thickness of the secondary thickening 131 is set between 0.7-1 mm.
Further, as shown in fig. 6, the length of the secondary thickening 131 is greater than the length of the secondary connecting sleeve 14. The end of the second-stage thickening portion 131 near the working platform 141 is flush with the vertical surface of the second-stage cold head 13, and the other end of the second-stage thickening portion 131 exceeds the second-stage connecting sleeve 14.
Further, as shown in fig. 6, a secondary buffer portion 132 is disposed at one end of the secondary thickening portion 131 away from the working platform 141, and the surface of the secondary buffer portion 132 is an inclined plane. The inclined plane of the buffer part can reduce the volume of the second-stage thickening part 131 at the part, increase the surface area of the second-stage thickening part, and reduce the included angle between the surface of the second-stage thickening part and the surface of the second-stage cold head 13, so that the stress concentration of the part is reduced, and the second-stage thickening part 131 is more firmly connected with the second-stage cold head 13 and the second-stage connecting sleeve 14.
Further, as shown in fig. 8, the inner wall of the end of the secondary connecting sleeve 14 near the working platform 141 is provided with a chamfer, which can facilitate the processing worker to process the secondary connecting sleeve 14.
In another alternative embodiment of the present application, as shown in fig. 7, a primary thickening 111 is provided on the primary cold head 11, where the primary thickening 111 is located at a portion where the primary connecting sleeve 12 is connected to the primary cold head 11.
Further, the thickness of the secondary thickening 131 is set between 0.5-0.8 mm.
Further, as shown in fig. 7, the length of the first-stage thickening 111 is longer than the length of the first-stage connecting sleeve 12.
Further, as shown in fig. 7, a first-stage buffer portion 112 is provided at one end of the first-stage thickened portion 111 away from the second-stage cold head 13, and the surface of the first-stage buffer portion 112 is an inclined surface.
In this embodiment, the length of the first-stage thickening portion 111 and the effect of the first-stage buffer portion 112 on the first-stage cold head 11 are the same as the length of the second-stage thickening portion 131 and the effect of the second-stage buffer portion 132 on the second-stage cold head 13 in the above embodiments, and will not be described herein.
It should be noted that, in the case that the embodiments of the present application do not conflict with the solutions and the technical solutions can coexist, new embodiments may be arbitrarily combined.
The foregoing has outlined rather broadly the principles and embodiments of the present application in order that the detailed description of the utility model may be better understood, and in order that the present application may be better understood. It should be noted that it would be obvious to those skilled in the art that various improvements and modifications can be made to the present application without departing from the principles of the present application, and such improvements and modifications fall within the scope of the claims of the present application.
Claims (10)
1. The GM refrigerator is characterized by comprising a primary cold head (11) and a secondary cold head (13), wherein the secondary cold head (13) is connected to one end of the primary cold head (11);
a primary connecting sleeve (12) is arranged on the peripheral wall of the primary cold head (11), a secondary connecting sleeve (14) is connected on the peripheral wall of the secondary cold head (13), and the secondary connecting sleeve (14) can be connected with a temperature sensor;
wherein, a working platform (141) is arranged on the secondary connecting sleeve (14), and the surface of the working platform (141) is a plane;
the working platform (141) is connected with the side wall cambered surface of the secondary connecting sleeve (14).
2. The GM refrigerator of claim 1, wherein the GM refrigerator is configured to operate in a substantially continuous mode,
the working platform (141) is arranged on the side wall of the secondary connecting sleeve (14), and the distance from the working platform (141) to the center of the secondary connecting sleeve (14) is smaller than the radius of the secondary connecting sleeve (14).
3. The GM refrigerator of claim 1, wherein the GM refrigerator is configured to operate in a substantially continuous mode,
the inner wall of the secondary connecting sleeve (14) is provided with a containing groove (142) arranged along the axial direction of the connecting sleeve.
4. The GM refrigerator of claim 3, wherein,
the containing groove (142) is communicated with one end of the secondary connecting sleeve (14) provided with the working platform (141).
5. The GM refrigerator of claim 1, wherein the GM refrigerator is configured to operate in a substantially continuous mode,
the secondary cold head (13) is provided with a secondary thickening part (131), and the secondary thickening part (131) is positioned at the connection part of the secondary connecting sleeve (14) and the secondary cold head (13).
6. The GM refrigerator of claim 5 wherein,
the length of the secondary thickening part (131) is larger than that of the secondary connecting sleeve (14).
7. The GM refrigerator of claim 5 wherein,
one end of the second-level thickening part (131) far away from the working platform (141) is provided with a second-level buffering part (132), and the surface of the second-level buffering part (132) is an inclined surface.
8. A GM refrigerator according to any one of claims 1 to 7 wherein,
the primary cold head (11) is provided with a primary thickening part (111), and the primary thickening part (111) is positioned at the connection part of the primary connecting sleeve (12) and the primary cold head (11).
9. The GM refrigerator of claim 8 wherein,
the length of the first-stage thickening part (111) is greater than that of the first-stage connecting sleeve (12).
10. The GM refrigerator of claim 8 wherein,
one end of the primary thickening part (111) far away from the secondary cold head (13) is provided with a primary buffer part (112), and the surface of the primary buffer part (112) is an inclined plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321801994.8U CN220436816U (en) | 2023-07-10 | 2023-07-10 | GM refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321801994.8U CN220436816U (en) | 2023-07-10 | 2023-07-10 | GM refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220436816U true CN220436816U (en) | 2024-02-02 |
Family
ID=89689769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321801994.8U Active CN220436816U (en) | 2023-07-10 | 2023-07-10 | GM refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220436816U (en) |
-
2023
- 2023-07-10 CN CN202321801994.8U patent/CN220436816U/en active Active
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