Thermal load testing device for refrigerating machine

Abstract

The utility model provides a thermal load testing device for a refrigerating machine, which comprises a base, a testing mechanism, an electric cabinet and a heating mechanism, and is characterized in that the refrigerating machine is mounted on the testing mechanism, and the testing mechanism is arranged on the base; one end of the heating mechanism is connected with the electric cabinet, and the other end is connected with a cold head of the refrigerator for applying a thermal load value to the cold head; the testing mechanism comprises a testing cavity and a mounting seat, the mounting seat is connected to the end part of the testing cavity, and two opposite side walls of the testing cavity are connected with the base; a testing cavity is arranged in the testing cavity, the refrigerating machine is inserted into the testing cavity through the mounting seat, and the mounting seat is provided with a mounting opening for the heating mechanism to insert. The testing mechanism can simulate and provide a cavity required when the refrigerating machine works, the simulated cavity meets the working requirement of the refrigerating machine, then the thermal load value applied to the cold head of the refrigerating machine by the heating mechanism is relatively accurate, the refrigerating capacity of the refrigerating machine can be detected at any time, the detection procedure is greatly simplified, and the detection efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of refrigerators, and in particular to a heat load testing device for refrigerators. Background Art

[0002] During the test of the refrigerator, the temperature needs to be monitored in real time. At the same time, after the refrigerator drops to the lowest temperature, a certain amount of heat load needs to be applied to its first-level cold head and second-level cold head to verify the cooling capacity of the refrigerator. Only then can it be determined whether the refrigerator is qualified.

[0003] However, in the prior art, it is not possible to provide the cavity required for simulating the operation of the refrigerator at any time, so it is not easy to accurately control the heat load value on the cooling head. Utility Model Content

[0004] In view of this, in order to address the technical problem that the above-mentioned prior art cannot provide actual heat load on the cold head of the refrigerator at any time, resulting in the inability to verify the cooling capacity of the refrigerator at any time, the present application provides a heat load testing device for a refrigerator, which can provide the cavity required to simulate the operation of the refrigerator at any time, thereby making it possible to more accurately control the heat load value on the cold head, so as to improve the verification efficiency of the cooling capacity of the refrigerator.

[0005] The present application provides a heat load test device for a refrigerator, comprising a base, a test mechanism, an electric control box and a heating mechanism, wherein the refrigerator is mounted on the test mechanism, and the test mechanism is arranged on the base;

[0006] One end of the heating mechanism is connected to the electric control box, and the other end is connected to the cold head of the refrigerator, so as to apply a heat load value to the cold head;

[0007] Wherein, the test mechanism comprises a test cavity and a mounting seat, the mounting seat is connected to the end of the test cavity, and the two opposite side walls of the test cavity are connected to the base;

[0008] A test cavity is arranged in the test cavity body, and the refrigerator is inserted into the test cavity through a mounting seat, and a mounting opening for inserting a heating mechanism is arranged on the mounting seat.

[0009] Compared with the prior art, the heat load testing device for refrigerator of the present application has a testing mechanism that can simulate the cavity required for the operation of the refrigerator. During the test, the cold head of the refrigerator is inserted into the test cavity in the test cavity. The mounting seat is provided with a mounting port. The heating mechanism applies a heat load to the cold head of the refrigerator through the mounting port, which can then assist in verifying the cooling capacity of the refrigerator to check whether the refrigerator is qualified. After the test cavity is set, the simulated cavity meets the working requirements of the refrigerator, and the heat load value applied to the cold head of the refrigerator by the heating mechanism is also relatively accurate. After adopting the heat load testing device of the present application, the cooling capacity of the refrigerator can be tested at any time, which greatly simplifies the detection procedure and improves the detection efficiency.

[0010] Preferably, the heating mechanism comprises a primary heater and a secondary heater;

[0011] The primary heater is used to apply a heat load to the primary cold head, and the secondary heater is used to apply a heat load to the secondary cold head.

[0012] Preferably, one end of the first-stage heater away from the first-stage installation port is electrically connected to the electric control box, a resistor is provided inside the first-stage heater, and the electric control box is used to adjust the heater power to change the heat load value of the first-stage cold head;

[0013] The primary heater and the secondary heater have the same structure.

[0014] Preferably, the test chamber is provided with a vacuum gauge and a baffle valve;

[0015] The vacuum gauge is used to detect the rough vacuum condition in the test chamber;

[0016] The baffle valve is used to control the inflow and outflow of gas in the test chamber.

[0017] Preferably, the test cavity is provided with an interface for installing a thermometer probe;

[0018] The number of the interfaces is at least two, and the interfaces are correspondingly arranged on opposite sides of the installation opening.

[0019] Preferably, the mounting seat comprises a flange base and a flange cover, and a nitrile sealing ring is used to seal between the flange base and the flange cover.

[0020] Preferably, the base comprises a longitudinal support frame and a transverse support frame, and the upper end of the longitudinal support frame is connected to the two ends of the test cavity.

[0021] The lower end of the longitudinal support frame is connected to the middle part of the transverse support frame.

[0022] Preferably, a guide wheel is provided at one end of the transverse support frame, and a brake wheel is provided at the other end.

[0023] Preferably, the base further comprises at least a reinforcing frame, one end of the reinforcing frame is connected to the end of the transverse supporting frame, and the other end of the reinforcing frame is connected to the longitudinal supporting frame.

[0024] Preferably, the base comprises an adjusting column, the adjusting column is arranged at the end of the longitudinal support frame, and one end of the adjusting column away from the longitudinal support frame is connected to the test cavity;

[0025] Wherein, the adjusting column is connected to the longitudinal support frame via a positioning pin, and the adjusting column can be rotated by adjusting the positioning pin.

[0026] The present invention provides a heat load test device for a refrigerator, which has at least the following technical effects:

[0027] 1. By setting up a test mechanism, the working environment of the refrigerator can be simulated at any time, so as to accurately apply heat load to the cold head of the refrigerator;

[0028] 2. By setting up an electric control box to control the heating mechanism, the working efficiency of the heating mechanism can be easily and accurately changed to control the heat load value. The operation is simple and convenient;

[0029] 3. By arranging guide wheels and brake wheels at the lower end of the base, the guide wheels can make the heat load test device easy to move, and the brake wheels can make the heat load test device stable;

[0030] 4. By setting an adjustment column and changing the angle between the adjustment column and the longitudinal support frame, the test mechanism can be rotated to provide a more convenient test position for the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 The structure of the heat load test device for a refrigerator provided in one embodiment of the present application is shown in FIG. Figure 1 ;

[0032] Figure 2 It is a schematic diagram of the top view of the structure of a heat load testing device for a refrigerator provided in one embodiment of the present application;

[0033] Figure 3 The structure of the heat load test device for a refrigerator provided in one embodiment of the present application is shown in FIG. Figure 2 ;

[0034] Figure 4 The structure of the heat load test device for a refrigerator provided in one embodiment of the present application is shown in FIG. Figure 3 ;

[0035] Figure 5 It is a partial cross-sectional structural schematic diagram of a heat load testing device for a refrigerator provided in one embodiment of the present application;

[0036] Figure 6 It is a schematic diagram of the structure of a mounting base provided in one embodiment of the present application.

[0037] Figure numerals: 1. Electric control box; 2. Test chamber; 3. Flange base; 4. Flange cover; 5. Longitudinal support frame; 6. Transverse support frame; 7. Reinforcement frame; 8. Adjustment column; 9. Guide wheel; 10. Brake wheel; 11. Primary installation port; 12. Secondary installation port; 13. Primary interface; 14. Secondary interface; 15. Vacuum gauge; 16. Baffle valve; 17. Refrigerator; 18. Test chamber; 19. Primary cold head; 20. Secondary cold head; 21. Mounting seat. DETAILED DESCRIPTION

[0038] In order to enable those skilled in the art to better understand the technical solution of the present disclosure, the present disclosure is described in detail, clearly and completely in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present disclosure and are not used to limit the present disclosure.

[0039] In the description of this application, if there is a description of first or second, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0040] Those skilled in the art should understand that, in the disclosure of the present application, the orientation or positional relationship indicated by terms such as "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", and "outside" are based on the orientation or positional relationship shown in the accompanying drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be understood as limiting the present application.

[0041] The present application is further described in detail below in conjunction with the accompanying drawings. Figures 1 to 6 illustrate.

[0042] The present application provides a heat load testing device for a refrigerator. The heat load testing device for a refrigerator (referred to as the testing device) is provided with a testing mechanism, which simulates the cavity required for the operation of the refrigerator 17 for the installation and insertion of the refrigerator 17, and then cooperates with the heating mechanism to accurately apply a heat load to the cold head of the refrigerator 17, thereby improving the efficiency and accuracy of detecting whether the cooling capacity of the refrigerator 17 is qualified.

[0043] like Figure 1 , Figures 2 to 5As shown, the test device also includes a base and an electric control box 1, and the test mechanism includes a test cavity 2 and a mounting seat 21. The test cavity 2 is provided with a test cavity 18 for inserting a cold head of a refrigerator 17, and the mounting seat 21 is connected to the upper end of the test cavity 2, and the lower end of the test cavity 2 is closed. Figure 6 As shown, the mounting base 21 includes a flange base 3 and a flange cover 4. Figure 5 As shown, the flange base 3 is connected to the upper end of the test cavity 2, the flange cover 4 is connected to the upper end of the flange base 3, and the refrigerator 17 passes through the mounting seat 21 to enter the test cavity 2, and then the mounting seat 21 is sleeved on the outside of the refrigerator 17, and the connection between the refrigerator 17 and the test cavity 2 can be achieved through the flange cover 4 and the flange base 3; a nitrile sealing ring is used to seal between the flange base 3 and the flange cover 4, which can reduce the gas release in the test cavity 2, and can also meet the high sealing performance requirements, and can ensure the high sealing performance in the test cavity 2.

[0044] like Figure 1 , Figures 2 to 5 As shown, the mounting base 21 includes a longitudinal support frame 5 and a transverse support frame 6. There are at least two longitudinal support frames 5, which are symmetrically arranged on opposite sides of the test cavity 2, and the distance between the two longitudinal support frames 5 is greater than the width of the test cavity 2; the upper end of the longitudinal support frame 5 is connected to the side wall of the test cavity 2, and the lower end of the longitudinal support frame 5 is connected to the middle of the transverse support frame 6. There are two transverse support frames 6, and the two transverse support frames 6 are arranged in parallel to provide the test device with stable contact with the ground, so that the test device can be stably placed on the ground.

[0045] Furthermore, in order to ensure the multi-angle test, the mounting seat 21 is further provided with an adjustment column 8, one end of the adjustment column 8 is connected to the test cavity 2, and the other end of the adjustment column 8 is connected to the longitudinal support frame 5. The adjustment column 8 and the longitudinal support frame 5 are connected by a positioning pin, and the angle of the test cavity 2 relative to the longitudinal support frame 5 can be adjusted by the positioning pin, such as Figure 3 As shown, the angle (vertical) at which the test chamber 2 is parallel to the longitudinal support frame 5 is shown. Figure 4 As shown, the angle between the test chamber 2 and the longitudinal support frame 5 is vertical (horizontal), and the adjustment column 8 can be adjusted at any time through the positioning pin, which can facilitate the staff to operate at multiple angles, meet the user's multi-angle testing needs, and greatly simplify the operation difficulty, so that it can be operated by one person.

[0046] Furthermore, to ensure the connection stability of the base, Figure 4 , Figure 5As shown, a reinforcing frame 7 is also provided, the lower end of the reinforcing frame 7 is connected to the end of the transverse support frame 6, and the upper end of the reinforcing frame 7 is connected to the middle part of the longitudinal support frame 5, so that the reinforcing frame 7 is inclined and forms a triangular structure with the longitudinal support frame 5 and the transverse support frame 6, thereby ensuring the stability of the base; in this embodiment, two reinforcing frames 7 are provided on the same transverse support frame 6, and the two reinforcing frames 7 are respectively arranged on both sides of the longitudinal support frame 5, thereby further improving the supporting structure strength of the base.

[0047] Further, such as Figure 1 As shown, guide wheels 9 are provided at the lower ends of the two horizontal support frames 6, and the guide wheels 9 are all arranged in the same side direction. A brake wheel 10 is provided on the other side away from the guide wheel 9; the guide wheel 9 enables the test device to be pushed, and when being pushed, it is more labor-saving and has less friction with the ground, so that the movement of the test device is more convenient; and with the cooperation of the brake wheel 10, the movement of the test device can be restricted and stably placed on the ground, so as to ensure the stability of the test device when it is stationary.

[0048] like Figure 1 , Figures 3 to 5 As shown, the primary cold head 19 and the secondary cold head 20 of the refrigerator 17 are both located in the test cavity 18 of the test cavity 2. A mounting port is provided on the mounting seat 21, and the mounting port penetrates the inner and outer side walls of the mounting seat 21. There is at least one mounting port. The heating mechanism includes a heater. After the heater is connected to the mounting port, the heat load is accurately applied to the primary cold head 19 and the secondary cold head 20. The heater is divided into a primary heater and a secondary heater, wherein the primary heater and the secondary heater can enter the test cavity 18 through the same mounting port, and the primary heater applies a heat load to the primary cold head 19, and the secondary heater applies a heat load to the secondary cold head 20. Correspondingly, as Figure 1 , Figure 5 As shown, the test cavity 2 is also provided with an interface, which penetrates the inner and outer side walls of the mounting seat 21, and the interface is used for inserting a thermometer probe, and then detecting the temperature of the primary cold head 19 and the secondary cold head 20 in the test cavity 2; there are at least two interfaces, which are divided into a primary interface 13 and a secondary interface 14, and the primary interface 13 corresponds to the primary cold head 19, and the secondary interface 14 corresponds to the secondary cold head 20;

[0049] In this embodiment, if Figure 2 As shown, the mounting openings and interfaces are evenly distributed on the flange base 3.

[0050] Furthermore, two mounting ports can be set, namely a first-level mounting port 11 and a second-level mounting port 12. The first-level heater is connected to the first-level mounting port 11, and the second-level heater is connected to the second-level mounting port 12. The setting height of the interface is the same as the setting height of the mounting port, so that the temperature detection of the first-level cold head 19 and the second-level cold head 20 can be more accurate and objective.

[0051] In this embodiment, if Figure 1 As shown, one end of the heater is connected to the mounting port, and the other end is electrically connected to the electric control box 1 through an electric wire. A resistor is provided inside the heater, and a display screen and buttons are provided on the electric control box 1. The electric control box 1 is used to supply power to the heater and can adjust the working power of the heater. The heat load value applied by the heater to the cold head is changed by changing the power of the heater. In this embodiment, the first-stage heater and the second-stage heater have the same structure, and only the setting positions are different.

[0052] like Figure 1 As shown, a vacuum gauge 15 and a baffle valve 16 are provided on the test chamber 2, and the vacuum gauge 15 and the baffle valve 16 are arranged on opposite sides of the test chamber 2. The vacuum gauge 15 is used to check the vacuum situation in the test chamber 18 in real time. The minimum range of the vacuum gauge 15 can reach 1.0E-1MPa, which meets the vacuum degree requirement of the refrigerator 17 when working in this application; an air port is provided on the test chamber 2, and the baffle valve 16 is arranged on the air port. The baffle valve 16 acts as a switch to control the inflow and outflow of gas in the test chamber 18. When the baffle valve 16 is opened, the test chamber 18 can be roughly evacuated. When the baffle valve 16 is closed, the test chamber 18 is kept in a vacuum environment.

[0053] In actual use, the refrigerator 17 to be tested is connected to the mounting seat 21, and a heater and a temperature probe are installed on the first-level cold head 19 and the second-level cold head 20 of the refrigerator 17; then the mounting seat 21 is connected to the test chamber 2, the baffle valve 16 is opened, and the test chamber 18 is roughly evacuated for about 10 to 15 minutes. After the test chamber 18 is roughly evacuated to 1.0E-1MPa through the vacuum gauge 15, the baffle valve 16 is closed, and the refrigerator 17 is powered on for testing;

[0054] After about 30 to 40 minutes, the refrigerator 17 is cooled to the lowest temperature, and the data is recorded. The first-level heater and the second-level heater are turned on to apply heat load to the first-level cold head 19 and the second-level cold head 20 respectively, and then the heat load test of the refrigerator 17 cold head is carried out for about 40-60 minutes. After the temperature stabilizes, the data is recorded, the heat load is turned off, and the temperature is cooled for about 30 to 40 minutes, and the data is recorded. Finally, the load resistance capacity of the refrigerator 17 can be judged.

[0055] During the test, the column 8 can be adjusted to simulate the horizontal refrigerator 17 test to meet the specific production requirements of some customers, in the same way as above.

[0056] It should be noted that the various embodiments of the present application can be arbitrarily combined into a new embodiment if the solutions do not conflict and the technical solutions can coexist.

[0057] The present application is described in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the present application and its core ideas. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A heat load test device for a refrigerator, characterized in that: It comprises a base, a testing mechanism, an electric control box (1) and a heating mechanism, wherein a refrigerator (17) is installed on the testing mechanism, and the testing mechanism is arranged on the base; One end of the heating mechanism is connected to the electric control box (1), and the other end is connected to the cold head of the refrigerator (17) so as to apply a heat load value to the cold head; The test mechanism comprises a test cavity (2) and a mounting seat (21), wherein the mounting seat (21) is connected to an end of the test cavity (2), and opposite side walls of the test cavity (2) are connected to the base; A test cavity (18) is provided in the test cavity body (2), and a refrigerator (17) is inserted into the test cavity (18) through a mounting seat (21). The mounting seat (21) is provided with a mounting opening for inserting a heating mechanism.

2. The heat load testing device for refrigerator according to claim 1, characterized in that: The heating mechanism includes a primary heater and a secondary heater; The primary heater is used to apply a heat load to the primary cold head (19), and the secondary heater is used to apply a heat load to the secondary cold head (20).

3. The heat load testing device for refrigerator according to claim 2, characterized in that: One end of the first-stage heater away from the first-stage installation port (11) is electrically connected to the electric control box (1), a resistor is provided inside the first-stage heater, and the electric control box (1) is used to adjust the heater power to change the heat load value of the first-stage cold head (19); The primary heater and the secondary heater have the same structure.

4. The heat load testing device for refrigerator according to claim 1, characterized in that: The test chamber (2) is provided with a vacuum gauge (15) and a baffle valve (16); The vacuum gauge (15) is used to detect the rough vacuum condition in the test chamber (18); The baffle valve (16) is used to control the inflow and outflow of gas in the test chamber (2).

5. The heat load testing device for refrigerator according to claim 1, characterized in that: The test cavity (2) is provided with an interface for installing a thermometer probe; The number of the interfaces is at least two, and the interfaces are correspondingly arranged on opposite sides of the installation opening.

6. The heat load testing device for refrigerator according to claim 1, characterized in that: The mounting seat (21) comprises a flange base (3) and a flange cover (4), and a nitrile sealing ring is used to seal between the flange base (3) and the flange cover (4).

7. The heat load testing device for refrigerator according to claim 1, characterized in that: The base comprises a longitudinal support frame (5) and a transverse support frame (6), wherein the upper end of the longitudinal support frame (5) is connected to the two ends of the test cavity (2). The lower end of the longitudinal support frame (5) is connected to the middle part of the transverse support frame (6).

8. The heat load testing device for a refrigerator according to claim 7, characterized in that: One end of the transverse support frame (6) is provided with a guide wheel (9), and the other end is provided with a brake wheel (10).

9. The heat load testing device for refrigerator according to claim 7, characterized in that: The base also includes at least a reinforcing frame (7), one end of the reinforcing frame (7) is connected to the end of the transverse support frame (6), and the other end is connected to the longitudinal support frame (5).

10. The heat load testing device for refrigerator according to claim 7, characterized in that: The base comprises an adjustment column (8), wherein the adjustment column (8) is arranged at an end of the longitudinal support frame (5), and an end of the adjustment column (8) away from the longitudinal support frame (5) is connected to the test cavity (2); The adjusting column (8) is connected to the longitudinal support frame (5) via a positioning pin, and the adjusting column (8) can be rotated by adjusting the positioning pin.

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