High-low temperature device based on Stirling cycle

Abstract

The utility model relates to the technical field of high and low temperature devices, and solves the problem that deep hypothermia and high temperature test or high and low temperature rapid temperature shock needs to be carried out on a device or some other test piece. The problems that the low temperature of a common high-low temperature test box can only reach about-100 DEG C, liquid nitrogen needs to be used when high-low temperature rapid temperature shock needs to be carried out, liquid nitrogen filling is troublesome, and the maintenance cost is high are solved. The high and low temperature device comprises a box body, a top plate is arranged at the top of the box body, a through groove is formed in the middle of the surface of the top plate, a connecting pipe is arranged in the through groove, a Dewar is arranged at the top of the connecting pipe, and a control screen is arranged on one side of the surface of the box body. And a switch is arranged on the side adjacent to the control screen, a circulating device is arranged in the box body and comprises a control panel fixedly installed on the other side of the surface of the box body, and a cold and hot all-in-one machine is fixedly installed in the box body.

Description

Technical Field

[0001] This utility model relates to the field of high and low temperature device technology, specifically a high and low temperature device based on the Stirling cycle. Background Technology

[0002] A high-low temperature circulating device disclosed in announcement number CN208482425U includes a housing, within which an oil storage tank, a circulating oil pump, a heater, and a refrigeration system are installed. The refrigeration system includes an evaporator. The oil outlet of the oil storage tank is connected to the oil inlet of the circulating oil pump via a pipeline through a first electric valve. The oil outlet of the circulating oil pump is connected to the oil inlet of a reaction vessel via a pipeline through the evaporator and the heater. The oil outlet of the reaction vessel is connected to the oil inlet of the oil storage tank via a pipeline through a second electric valve.

[0003] It integrates heating and cooling systems, has a high degree of integration, saves space, and reduces equipment costs.

[0004] However, when it is necessary to perform deep and high temperature tests or rapid temperature shocks on devices or other test pieces, ordinary high and low temperature test chambers can only reach a minimum temperature of around -100℃. When rapid temperature shocks are required, liquid nitrogen must be used. Liquid nitrogen filling is troublesome and maintenance costs are high, and this solution is not effective for temperature regulation in high and low temperature chambers. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a high and low temperature device based on the Stirling cycle, solving the problem of needing to conduct deep and high temperature tests or rapid high and low temperature shocks on devices or other test pieces. Ordinary high and low temperature test chambers can only reach a minimum temperature of around -100℃. When rapid high and low temperature shocks are required, liquid nitrogen is needed, which is cumbersome to fill and has high maintenance costs.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a high and low temperature device based on the Stirling cycle, comprising a housing, a top plate on the top of the housing, a through groove in the middle of the surface of the top plate, a connecting pipe inside the through groove, a Dewar on the top of the connecting pipe, a control panel on one side of the housing surface, a switch on the side adjacent to the control panel, and a circulation device inside the housing.

[0007] The circulation device includes a control panel fixedly installed on the other side of the housing surface. A cooling and heating unit is fixedly installed inside the housing. A vacuum pump is provided on the side adjacent to the cooling and heating unit. A vacuum tube is provided at one end of the vacuum pump. A nitrogen tube is provided at one end of the cooling and heating unit. A load loading surface is provided on the top of the cooling and heating unit.

[0008] In one specific embodiment, a guide groove is provided on one side of the top plate surface, the size of the guide groove being adapted to the size of the vacuum tube, and the vacuum tube passing through the guide groove.

[0009] In one specific embodiment, a through groove is provided on the other side of the top plate surface. The size of the through groove is adapted to the size of the nitrogen pipe, and the nitrogen pipe passes through the through groove.

[0010] In one specific embodiment, support plates are fixedly installed on both sides of the surface of the integrated cooling and heating unit, and a positioning groove is provided in the middle of the surface of the support plate, with a positioning bolt inside the positioning groove.

[0011] In one specific embodiment, the size of the connecting pipe is adapted to the size of the through groove, and the connecting pipe passes through the through groove.

[0012] In one specific embodiment, the surface of the control screen is provided with a display groove, and the interior of the display groove is provided with a waterproof membrane for improving waterproofing.

[0013] Compared with the prior art, this utility model provides a high and low temperature device based on the Stirling cycle, which has the following beneficial effects:

[0014] In the technical solution disclosed in this utility model, the vacuum pump is turned on in conjunction with the circulation device set inside the box. The vacuum pump creates a vacuum inside the Dewar. After the vacuum is created inside the Dewar, the integrated cooling and heating unit is used to circulate and quickly cool down the inside of the box. When a high temperature is required, the integrated cooling and heating unit is used to circulate and quickly heat up the box.

[0015] The circulation component designed in this invention automatically opens the solenoid valve during use, causing the vacuum pump to pump out gas from the Dewar, creating a vacuum inside the Dewar. The solenoid valve then closes. When the load surface requires a low-temperature environment, the control board controls the integrated cooling and heating unit to operate in a Stirling reverse cycle for rapid cooling. When the load surface requires a high-temperature environment, the control board controls the integrated cooling and heating unit to operate in a Stirling reverse cycle for rapid heating. After completion, nitrogen is automatically added to quickly restore the temperature, improving the efficiency of alternating deep and high temperatures. Furthermore, it allows for scenarios requiring low-temperature adsorption and high-temperature gas release, such as gas component mass spectrometry analysis. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the disassembled structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the circulation component of this utility model;

[0020] Figure 4 This is a schematic diagram of the box structure of this utility model.

[0021] In the diagram: 1. Housing; 2. Top plate; 3. Connecting pipe; 4. Dewar; 5. Control panel; 6. Switch; 7. Circulation device; 71. Control board; 72. Integrated cooling and heating unit; 73. Vacuum pump; 74. Vacuum pipe; 75. Nitrogen pipe; 76. Load loading surface. Detailed Implementation

[0022] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0023] Figures 1-4 In one embodiment of this utility model, a high and low temperature device based on the Stirling cycle includes a housing 1, a top plate 2 on the top of the housing 1, a through groove in the middle of the surface of the top plate 2, a connecting pipe 3 inside the through groove, a Dewar 4 on the top of the connecting pipe 3, a control panel 5 on one side of the surface of the housing 1, a switch 6 on the side adjacent to the control panel 5, and a circulation device 7 inside the housing 1.

[0024] The specific problem addressed in this embodiment is to solve the problem of needing to perform deep and high temperature tests or rapid high and low temperature shocks on devices or other test pieces. Ordinary high and low temperature test chambers can only reach a minimum temperature of around -100℃. When rapid high and low temperature shocks are required, liquid nitrogen is needed, which is cumbersome to fill and has high maintenance costs. This invention utilizes a circulation device 7 installed inside the chamber 1. The vacuum pump 73 is turned on, creating a vacuum inside the Dewar 4. After the vacuum is created inside the Dewar 4, the integrated cooling and heating unit 72 circulates to rapidly cool the interior of the chamber 1. When high temperatures are required, the integrated cooling and heating unit 72 circulates to rapidly heat the interior.

[0025] The circulation device 7 includes a control board 71 fixedly installed on the other side of the surface of the housing 1. A cooling and heating unit 72 is fixedly installed inside the housing 1. A vacuum pump 73 is provided on the side adjacent to the cooling and heating unit 72. A vacuum tube 74 is provided at one end of the vacuum pump 73. A nitrogen tube 75 is provided at one end of the cooling and heating unit 72. A load loading surface 76 is provided on the top of the cooling and heating unit 72. A guide groove is opened on one side of the surface of the top plate 2. The size of the guide groove is adapted to the size of the vacuum tube 74. The vacuum tube 74 passes through the guide groove. A through groove is opened on the other side of the surface of the top plate 2. The size of the through groove is adapted to the size of the nitrogen tube 75. The nitrogen tube 75 passes through the through groove. Support plates are fixedly installed on both sides of the surface of the cooling and heating unit 72. A positioning groove is opened in the middle of the surface of the support plate. A positioning bolt is provided inside the positioning groove. In this specific embodiment, during use, when the device is started, the solenoid valve is automatically opened, the vacuum pump 73 pumps out the gas in the Dewar 4, a vacuum is formed in the Dewar 4, and the solenoid valve is closed. When the load loading surface 76 requires a low-temperature environment, the control board 71 controls the integrated cooling and heating unit 72 to operate in a Stirling reverse cycle for rapid cooling. When the load loading surface 76 requires a high-temperature environment, the control board 71 controls the integrated cooling and heating unit 72 to operate in a Stirling reverse cycle for rapid heating. After the operation is completed, nitrogen is automatically added to quickly restore the temperature, improving the efficiency of alternating deep low-temperature and high-temperature operation. Furthermore, it can be used for scenarios requiring low-temperature adsorption and high-temperature gas release, such as gas component mass spectrometry analysis.

[0026] In this specific embodiment, the size of the connecting tube 3 is matched with the size of the through groove, the connecting tube 3 passes through the through groove, and the surface of the control screen 5 is provided with a display groove, and the interior of the display groove is provided with a waterproof membrane to improve waterproofness.

[0027] The control method of this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail.

[0028] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high and low temperature device based on the Stirling cycle, comprising a housing (1), characterized in that: The top of the box (1) is provided with a top plate (2), and a through groove is provided in the middle of the surface of the top plate (2). A connecting pipe (3) is provided inside the through groove, and a Dewar (4) is provided on the top of the connecting pipe (3). A control panel (5) is provided on one side of the surface of the box (1), and a switch (6) is provided on the side adjacent to the control panel (5). A circulation device (7) is provided inside the box (1). The circulation device (7) includes a control panel (71) fixedly installed on the other side of the surface of the box (1). A cooling and heating unit (72) is fixedly installed inside the box (1). A vacuum pump (73) is provided on the side adjacent to the cooling and heating unit (72). A vacuum tube (74) is provided at one end of the vacuum pump (73). A nitrogen tube (75) is provided at one end of the cooling and heating unit (72). A load loading surface (76) is provided on the top of the cooling and heating unit (72).

2. The high and low temperature device based on the Stirling cycle according to claim 1, characterized in that: A guide groove is provided on one side of the surface of the top plate (2), the size of which is adapted to the size of the vacuum tube (74), and the vacuum tube (74) passes through the guide groove.

3. The high and low temperature device based on the Stirling cycle according to claim 1, characterized in that: A through groove is provided on the other side of the surface of the top plate (2). The size of the through groove is adapted to the size of the nitrogen pipe (75). The nitrogen pipe (75) passes through the through groove.

4. The high and low temperature device based on the Stirling cycle according to claim 1, characterized in that: Both sides of the surface of the integrated heating and cooling unit (72) are fixedly installed with support plates. A positioning groove is provided in the middle of the surface of the support plate, and a positioning bolt is provided inside the positioning groove.

5. A high and low temperature device based on a Stirling cycle according to claim 1, characterized in that: The size of the connecting pipe (3) is adapted to the size of the through groove, and the connecting pipe (3) passes through the through groove.

6. The high and low temperature device based on the Stirling cycle according to claim 1, characterized in that: The surface of the control screen (5) is provided with a display groove, and the interior of the display groove is provided with a waterproof membrane to improve waterproofness.

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