Refrigerator and sealing head thereof
By integrating pressure sensors and electrical connectors in the sealing head of the Stirling refrigerator, real-time monitoring of the helium pressure inside the refrigerator is achieved, which solves the problems of degraded refrigerator performance and product failure, and improves the reliability of the refrigerator.
Patent Information
- Application Number
- CN202420666678.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-02
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-04-02
AI Technical Summary
It is difficult to effectively check whether the internal helium pressure meets the usage requirements during long-term use of the Stirling refrigerator, resulting in degradation in performance and product failure.
A sealing head including a connecting body, an electrical connection member and a pressure sensor is designed, and the electrical connection member is in contact with the pressure sensor to realize real-time monitoring of the internal pressure of the refrigerator.
By monitoring the internal pressure of the refrigerator in real time, performance problems caused by air pressure can be promptly investigated and solved, improving the reliability of the refrigerator.
Smart Images
Figure CN222598076U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of refrigeration, and more specifically to a refrigerator and a sealing head thereof. Background Art
[0002] The refrigerant of the Stirling refrigerator is high-purity helium. The pressure of the helium filled into the refrigerator affects the performance parameters of the refrigerator. When the Stirling refrigerator is filled with gas, it is separated from the filling and exhaust system through a sealing interface to ensure the sealing of the helium in the internal cavity of the refrigerator. The refrigerator is a product with a certain leakage rate indicator. When evaluating the long-term reliability of the refrigerator, it is difficult to effectively check whether the internal pressure still meets the product use requirements. Therefore, when the performance of the refrigerator decreases, performance problems or even product failure are easily caused by the gas pressure. Therefore, how to improve the reliability of the refrigerator is a technical problem that technicians in this field need to solve. Utility Model Content
[0003] In view of this, an object of the present invention is to provide a refrigerator and a sealing head thereof, the structural design of the refrigerator and the sealing head thereof can effectively solve the problem of low reliability of the refrigerator.
[0004] In order to achieve the above object, the utility model provides the following technical solutions:
[0005] A sealing head for a refrigerator, comprising:
[0006] A connecting body, used for detachable connection with the charging port of the refrigerator, the connecting body comprises a rod body and a head end, the head end is arranged at one end of the rod body and has a width greater than the width of the rod body, and the head end is used to squeeze the sealing ring sleeved on the outside of the rod body onto the surface of the box of the refrigerator for sealing;
[0007] An electrical connector, one end of which extends to the end face of the rod body away from the head end, and the other end of which extends to the end face of the head end away from the rod body, and the electrical connector is insulated from the head end and the rod body respectively;
[0008] The pressure sensor is arranged at one end of the rod body away from the head end and is in contact and conduction with the electrical connector.
[0009] Optionally, in the sealing head of the refrigerator, the outer peripheral surface of the rod body is provided with an external thread for matching with the internal thread of the inflation port.
[0010] Optionally, in the sealing head of the refrigerator, the external thread can be loosely matched with the internal thread.
[0011] Optionally, in the sealing head of the refrigerator, the electrical connector is a metal needle.
[0012] Optionally, in the sealing head of the refrigerator, a communicating mounting hole is provided in the rod body and the head end, the metal needle is encapsulated in an insulating material column, and the insulating material column is fixed in the mounting hole.
[0013] Optionally, in the sealing head of the refrigerator, the insulating material column is a glass column.
[0014] Optionally, in the sealing head of the refrigerator, the cross-section of the head end is polygonal.
[0015] Optionally, in the sealing head of the refrigerator, the maximum width of the polygon is smaller than the outer diameter of the cylindrical boss provided with the inflation port.
[0016] Optionally, in the sealing head of the refrigerator, an annular groove is provided at one end of the head end connected to the rod body, the rod body is located in the hollow part of the annular groove, and the annular groove is used to install the sealing ring.
[0017] The sealing head of the refrigerator provided by the utility model comprises a connecting body, an electrical connector and a pressure sensor. Among them, the connecting body is used for detachable connection with the air filling port of the refrigerator, the connecting body comprises a rod body and a head end, the head end is arranged at one end of the rod body and has a width greater than the width of the rod body, and the head end is used to squeeze the sealing ring sleeved outside the rod body onto the surface of the refrigerator box body for sealing; one end of the electrical connector extends to the end face of the rod body away from the head end, and the other end extends to the end face of the head end away from the rod body, and the electrical connector is insulated from the head end and the rod body respectively; the pressure sensor is arranged at one end of the rod body away from the head end, and is in contact and conductive with the electrical connector.
[0018] By using the sealing head of the refrigerator provided by the utility model, the connecting body can be connected to the gas filling port of the refrigerator and the two can be sealed, thereby preventing gas leakage in the refrigerator. At the same time, since a pressure sensor is provided at one end of the connecting body located in the refrigerator, and the pressure sensor is electrically connected to the electrical connector, and the electrical connector extends to the outer end surface of the head end of the connecting body, the detection result of the pressure sensor can be output by connecting the electrical connector to a tester or other equipment, so that the internal pressure of the refrigerator can be monitored in time, and the internal pressure problem of the faulty refrigerator can be visually checked, reducing or even eliminating the performance problem of the refrigerator caused by the internal pressure, and improving the reliability of the refrigerator using the sealing head.
[0019] In order to achieve the above object, the utility model also provides a refrigerator, which includes any of the above sealing heads. Since the above sealing heads have the above technical effects, the refrigerator having the sealing heads should also have corresponding technical effects. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0021] Figure 1 This is a perspective structural diagram of a sealing head according to a specific embodiment of the utility model;
[0022] Figure 2 It is a schematic diagram of the sealing head from another perspective;
[0023] Figure 3 for Figure 1 A schematic diagram of the structure of the connecting body;
[0024] Figure 4 for Figure 1 Schematic diagram of the structure of the CEC connector;
[0025] Figure 5 This is a structural schematic diagram of a refrigerator (with the sealing head disassembled) according to a specific embodiment of the utility model;
[0026] Figure 6 for Figure 5 The corresponding partial schematic diagram of the sealing head installation state;
[0027] Figure 7 is a partial cross-sectional schematic diagram of the sealing head installation state;
[0028] Figure 8 It is a structural schematic diagram of the inflation valve;
[0029] Fig. 9 This is a cross-sectional schematic diagram of the inflation valve in use.
[0030] The following are marked in the accompanying drawings:
[0031] Sealing head 10, sealing ring 20, inflation port 30, cylindrical boss 31, inflation valve 40, inflation gasket 50;
[0032] Connecting body 110 , electrical connector 120 , pressure sensor 130 , rod body 111 , head end 112 , mounting hole 113 , insulating material column 140 . DETAILED DESCRIPTION
[0033] The embodiment of the utility model discloses a refrigerator and a sealing head thereof. The sealing head can not only play the role of sealing and fastening, but also can perform pressure detection to conveniently measure the pressure value inside the refrigerator, eliminate refrigerator performance problems caused by air pressure, and improve the reliability of the refrigerator.
[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0035] In a specific embodiment, see Figure 1-Figure 4 The sealing head 10 of the refrigerator provided by the utility model includes a connecting body 110, an electrical connector 120 and a pressure sensor 130. Among them, the connecting body 110 is used for detachable connection with the charging port 30 of the refrigerator, so that the sealing head 10 is fastened to the charging port 30 after the charging is completed through the charging port 30. The connecting body 110 includes a rod body 111 and a head end 112. The head end 112 is arranged at one end of the rod body 111 and has a width greater than the width of the rod body 111, so that a step surface is formed between the two. When the sealing head 10 is installed in the charging port 30, the rod body 111 is inserted into the charging port 30, the step surface and the box body of the refrigerator form a limiting effect, and the head end 112 is blocked outside the charging port 30. The head end 112 is used to squeeze the sealing ring 20 sleeved on the outside of the rod body 111 onto the surface of the box body of the refrigerator for sealing. It can be understood that the box body of the refrigerator here refers to a box body provided with an air filling port 30, and the head end 112 can cooperate with the box body to compress the sealing ring 20, thereby achieving effective sealing. One end of the electrical connector 120 extends to the end face of the rod body 111 away from the head end 112, and the other end extends to the end face of the head end 112 away from the rod body 111, and the electrical connector 120 is insulated from the head end 112 and the rod body 111 respectively. That is, the two ends of the electrical connector 120 extend to the two ends of the connecting body 110. In other words, the electrical connector 120 passes through the sealing head 10, and the electrical connector 120 is insulated from the connecting body 110. Of course, in the case where multiple electrical connectors 120 are provided, each electrical connector 120 is also insulated. The pressure sensor 130 is provided at one end of the rod body 111 away from the head end 112, and is in contact and conductive with the electrical connector 120. When the sealing head 10 is sealed and connected to the air filling port 30, the pressure sensor 130 is located inside the refrigeration machine body. It can be understood that the electrical connector 120 is specifically connected to the circuit of the pressure sensor 130, so that the signal of the pressure sensor 130 is derived through the electrical connector 120, and the other end of the electrical connector 120 is located at the end surface of the connecting body 110, so it can be easily connected to equipment such as a tester.
[0036] By using the sealing head 10 of the refrigerator provided by the utility model, the connecting body 110 can be connected to the gas filling port 30 of the refrigerator and achieve a seal between the two, thereby preventing gas leakage in the refrigerator. At the same time, since a pressure sensor 130 is provided at one end of the connecting body 110 located in the refrigerator, and the pressure sensor 130 is electrically connected to the electrical connector 120, and the electrical connector 120 extends to the outer end surface of the head end 112 of the connecting body 110, the detection result of the pressure sensor 130 can be output by connecting the electrical connector 120 to a tester or other equipment, so that the internal pressure of the refrigerator can be monitored in time, and the internal pressure problem of the faulty refrigerator can be visually checked, thereby reducing or even eliminating the performance problem of the refrigerator caused by the internal pressure, and improving the reliability of the refrigerator using the sealing head 10.
[0037] Also, see Figure 5-Figure 7 The head end 112 is used to cooperate with the box body to achieve sealing, which increases the sealing surface area and achieves better sealing effect. The sealing ring 20 is arranged between the end face and the box body, and the front end of the sealing ring 20 is the matching gap between the rod body 111 and the inflation port 30, which is a long and small gap. Compared with the conventional sealing gasket directly contacting the internal pressure of the refrigerator, the pressure impacting the sealing surface of the sealing gasket is relatively large. The above arrangement of the utility model significantly reduces the pressure on the sealing ring 20, further improving the sealing reliability of the sealing ring 20.
[0038] In some embodiments, the outer peripheral surface of the rod body 111 is provided with an external thread for matching with the internal thread of the inflation port 30. By providing an external thread on the rod body 111 to match with the thread of the inflation port 30, the structure is simple and easy to disassemble and assemble. In other embodiments, the detachable connection of the sealing head 10 can also be achieved by other methods such as clamping the rod body 111 with the inflation port 30 and bolting the head end 112 with the box of the refrigerator.
[0039] In some embodiments, the external thread is used to cooperate with the internal thread gap. When the sealing head 10 is not tightened with the box body of the refrigerator, the external thread and the internal thread gap cooperate, so that the gap between the external thread and the internal thread can be used for inflation. In addition, it can cooperate with the inflation valve 40 to ensure that the internal pressure does not leak during inflation and inflation is performed in a sealed state. After inflation is completed, the inflation valve 40 can tighten the sealing head 10 to the inflation port 30 while maintaining high pressure to achieve sealing.
[0040] See also Figure 8 and Fig. 9, which provides an inflation valve 40 that can be used for the sealing head 10 of the utility model, the inflation valve 40 includes a shell, one end of the shell has a accommodating groove for installing the sealing head 10, and the other end of the shell is provided with an interface for connecting to the gas source, one end of the shell can be sealed with the cabinet of the refrigerator through an external inflation gasket 50, specifically, the inner wall of the shell of the inflation valve 40 is provided with a thread, and cooperates with the cylindrical raised thread of the refrigerator cabinet, and the inflation gasket 50 is squeezed by the thread to make the interior of the inflation valve 40 connected with the interior of the refrigerator cabinet and isolated from the outside, the internal pressure will not leak during pressurization, and gas inflation is performed in a sealed state. Specifically, the refrigerator cabinet can be pressurized with gas through the thread gap between the external thread on the outer circumferential surface of the rod body 111 and the internal thread of the inflation port 30. After inflation is completed, the inflation valve 40 can tighten the sealing head 10 while maintaining high pressure to achieve sealing. Specifically, the external thread of the rod body 111 is tightened with the internal thread of the inflation port 30 by rotating the head end 112, and the head end 112 squeezes the sealing ring 20 to deform it to achieve a sealing effect.
[0041] In some embodiments, the electrical connector 120 is a metal needle. The signal of the pressure sensor 130 is derived by utilizing the good conductivity of the metal material. The specific number of the electrical connector 120 is set as required, such as Figure 1 As shown, three electrical connectors 120 are provided.
[0042] In some embodiments, a connecting mounting hole 113 is provided in the rod body 111 and the head end 112, and the metal needle is encapsulated in the insulating material column 140, and the insulating material column 140 is fixed in the mounting hole 113. Specifically, the metal needle can be encapsulated in the insulating material column 140 by sintering or other methods to form an integral inner core structure, and then the integral inner core structure is installed in the mounting hole 113 to make it a whole. The insulating material column 140 not only realizes the insulation between the metal needle and the connecting body 110, but also facilitates assembly and has a reliable structure. The mounting hole 113 is along the axial direction, that is, the sealing direction is in the axial direction of the connecting body 110, so it will not be affected by the radial force, thereby ensuring the sealing reliability of the sealing head 10. In other embodiments, the insulation between the metal needle and the connecting body 110 can also be achieved by providing a through hole that cooperates with the metal needle in the rod body 111 and the head end 112, and providing an insulating coating on the inner wall of the through hole, or providing an insulating pad.
[0043] In some embodiments, the insulating material column 140 is a glass column, which has good insulating properties, low cost, and is easy to process.
[0044] In some embodiments, the cross section of the head end 112 is polygonal. The polygonal shape includes but is not limited to a triangle, a quadrilateral, a hexagon, etc. By setting the head end 112 to be a polygon, it is convenient to apply force to it to rotate it, so as to be screwed to the inflation port 30.
[0045] In some embodiments, the maximum width of the polygon is smaller than the outer diameter of the cylindrical boss 31 provided with the inflation port 30. The cylindrical boss 31 is provided on the box body of the refrigerator, and the cylindrical boss 31 is provided with the inflation port 30 connected to the inside of the box body. When the maximum width of the polygon is set to be smaller than the outer diameter of the cylindrical boss 31, when the inflation valve 40 is covered outside the cylindrical boss 31, the sealing head 10 can be installed in the inflation valve 40 and can rotate in the inflation valve 40, so that it can be locked with the internal thread of the inflation port 30 under high pressure and press the sealing ring 20 between the head end 112 and the cylindrical boss 31, so as to achieve reliable sealing.
[0046] In some embodiments, an annular groove is provided at one end of the head end 112 connected to the rod body 111, and the rod body 111 is located in the hollow part of the annular groove, and the annular groove is used to install the sealing ring 20. By providing the annular groove, it is convenient to install the sealing ring 20, so as to achieve reliable sealing between the head end 112 and the box body, and prevent the internal air pressure leakage of the refrigerator.
[0047] Based on the sealing head 10 provided in the above embodiment, the utility model further provides a refrigerator, which includes any one of the sealing heads 10 in the above embodiment. Since the refrigerator adopts the sealing head 10 in the above embodiment, please refer to the above embodiment for the beneficial effects of the refrigerator.
[0048] For details, please refer to Figure 7 and Figure 8 A sealing ring 20 is provided between the head end 112 of the connecting body 110 of the sealing head 10 and the end face provided with the inflation port 30 . The sealing ring 20 is deformed by squeezing the sealing head 10 and the end face to achieve a sealing effect.
[0049] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.
[0050] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A sealing head for a refrigerator, characterized in that: include: A connecting body (110) is used for detachably connecting to an air charging port (30) of a refrigerator, the connecting body (110) comprising a rod body (111) and a head end (112), the head end (112) being arranged at one end of the rod body (111) and having a width greater than the width of the rod body (111), the head end (112) being used for pressing a sealing ring (20) sleeved on the outside of the rod body (111) onto a housing surface of the refrigerator for sealing; An electrical connector (120), one end of the electrical connector (120) extending to an end surface of the rod body (111) away from the head end (112), and the other end extending to an end surface of the head end (112) away from the rod body (111), and the electrical connector (120) is insulated from the head end (112) and the rod body (111); The pressure sensor (130) is arranged at an end of the rod body (111) away from the head end (112) and is in contact with and conductive with the electrical connector (120).
2. The sealing head of a refrigerator according to claim 1, characterized in that: The outer peripheral surface of the rod body (111) is provided with an external thread for matching with the internal thread of the inflation port (30).
3. The sealing head of a refrigerator according to claim 2, characterized in that: The external thread can be loosely matched with the internal thread.
4. The sealing head of a refrigerator according to any one of claims 1 to 3, characterized in that: The electrical connector (120) is a metal needle.
5. The sealing head of a refrigerator according to claim 4, characterized in that: The rod body (111) and the head end (112) are provided with a communicating mounting hole (113), the metal needle is encapsulated in an insulating material column (140), and the insulating material column (140) is fixed to the mounting hole (113).
6. The sealing head of a refrigerator according to claim 5, characterized in that: The insulating material column (140) is a glass column.
7. The sealing head of a refrigerator according to any one of claims 1 to 3, characterized in that: The cross section of the head end (112) is polygonal.
8. The sealing head of a refrigerator according to claim 7, characterized in that: The maximum width of the polygon is smaller than the outer diameter of the cylindrical boss (31) provided with the inflation port (30).
9. The sealing head of a refrigerator according to any one of claims 1 to 3, characterized in that: An annular groove is provided at one end of the head end (112) connected to the rod body (111); the rod body (111) is located in the hollow part of the annular groove; and the sealing ring (20) is installed in the annular groove.
10. A refrigerator, characterized in that: A sealing head for a refrigerator according to any one of claims 1 to 9, wherein a sealing ring (20) is provided between a head end (112) of a connecting body (110) of the sealing head and an end surface provided with the inflation port (30).