Turnover equipment for refrigerating machine

Abstract

The utility model relates to the related technical field of refrigeration, and provides turnover equipment for a refrigerator, which comprises a support, a working table and a driving mechanism, the working table is used for installing the refrigerator, and the working table is rotatably connected with the support; the driving mechanism is arranged on the support, and the output end of the driving mechanism is in transmission connection with the support to drive the workbench to turn over relative to the support. And the driving mechanism has a self-locking state, so that the workbench is suspended to a preset angle. The working table and the support are arranged, the refrigerating machine is installed on the working table, under driving of the driving mechanism, the pulse tube refrigerating machine can turn over relative to the support along with the working table, and therefore the pulse tube refrigerating machine has multiple operation angles, and due to the fact that the driving mechanism has a self-locking state, the pulse tube refrigerating machine has important significance on extremely-low-temperature experiments. And hovering and self-locking of the refrigerator in all directions can be effectively realized, and the accuracy of a measurement result is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field related to refrigeration, and in particular to a turning device for a refrigerator. Background Art

[0002] Dilution refrigerator is a high-end scientific research instrument that can provide an environment close to absolute zero. It is widely used in scientific research fields such as condensed matter physics, material science, particle physics and even astronomical detection. GM type cryogenic refrigerators are divided into GM type refrigerators and GM type pulse tube refrigerators. Both use valve switching devices to achieve the compression and expansion process of the gas in the refrigerator by controlling the opening and closing of high and low pressure valves, thereby obtaining a refrigeration effect. The valve switching device is generally a rotary valve or a solenoid valve.

[0003] Compared with GM refrigerators, the running direction of pulse tube refrigerators is greatly restricted. The best running direction is vertical operation at 0 degrees, with the cold end facing down and the hot end facing up. Changing the running direction will cause the refrigeration performance to decay. However, the relationship between cooling capacity and running direction has not been verified in China. Although there are relevant data internationally, we cannot know the specific technical parameters due to the blockade of the corresponding technology in China. Since pulse tube refrigerators do not have the low-temperature moving parts of conventional regenerative refrigerators, they fundamentally solve the problems of cold cavity vibration and wear, making them widely used in aerospace, military (maintaining the working temperature of infrared detectors on meteorological satellites and cooling of highly sensitive signal receiving and analysis instruments on military detection satellites, etc.) and other fields.

[0004] However, in the process of space flight, it is necessary to adjust the pulse tube's running direction to provide the appropriate cooling capacity, which requires the data of the pulse tube refrigerator's relevant running angle as a reference. Therefore, the research and development of solving the problem of the pulse tube refrigerator's relevant running angle is an important issue that the industry needs to solve urgently. Utility Model Content

[0005] The utility model provides a turning device for a refrigerator, which is used to solve the problem of the operation angle of the pulse tube refrigerator in the related technology.

[0006] The utility model provides a turning device for a refrigerator, comprising:

[0007] Bracket;

[0008] A workbench, used for installing the refrigerator, wherein the workbench is rotatably connected to the bracket;

[0009] A driving mechanism, wherein the driving mechanism is disposed on the bracket, and an output end of the driving mechanism is drivingly connected to the bracket to drive the workbench to flip relative to the bracket;

[0010] Wherein, the driving mechanism has a self-locking state so that the workbench can hover to a preset angle.

[0011] According to a turning device for a refrigerator provided by the utility model, the driving mechanism comprises:

[0012] A fixing seat, the fixing seat is fixedly connected to the bracket;

[0013] A transmission shaft, one end of which is drivingly connected to the workbench;

[0014] A turbine, the turbine being fixedly connected to the other end of the transmission shaft;

[0015] A worm, the worm is rotatably disposed on the fixed seat, and the worm is meshed with the turbine for transmission;

[0016] A driving member is arranged at one end of the worm, and the driving member drives the worm to rotate relative to the fixing seat.

[0017] According to a turning device for a refrigerator provided by the utility model, the driving member is a hand wheel fixedly connected to the worm.

[0018] According to a turning device for a refrigerator provided by the utility model, the fixing seat includes a support frame and a vertical plate, one end of the support frame is fixedly connected to the bracket, and a side wall of the support frame is fixedly connected to the vertical plate, a first concave cavity and a second concave cavity are provided on the vertical plate, and a side wall of the first concave cavity is connected to a side wall of the second concave cavity;

[0019] The turbine is rotatably disposed in the first concave cavity, the worm is rotatably disposed in the second concave cavity, and the end of the transmission shaft is rotatably passed through the vertical plate and extends into the first concave cavity to be fixedly connected with the turbine.

[0020] According to a turning device for a refrigerator provided by the utility model, the turning device comprises a first bearing member and a second bearing member, the inner wall of the second concave cavity is provided with a first bearing groove and a second bearing groove, the first bearing member is installed in the first bearing groove, and the second bearing member is installed in the second bearing groove;

[0021] Wherein, the first bearing component and the second bearing component are both externally mounted on the worm.

[0022] According to a turning device for a refrigerator provided by the utility model, first bearing seats are provided at opposite ends of the bracket, and second bearing seats are provided at opposite ends of the workbench;

[0023] One of the first bearing seats and one of the second bearing seats are rotationally connected via a rotating shaft, and the output end of the driving mechanism is rotationally matched with another of the first bearing seats and fixedly connected with another of the second bearing seats.

[0024] According to a turning device for a refrigerator provided by the utility model, the bracket is provided with a mounting area and an avoidance opening communicating with the mounting area;

[0025] The workbench is located in the installation area, and the bracket is further provided with a blocking structure, and the blocking structure is used to open or close the avoidance opening;

[0026] Wherein, when the workbench is fixed relative to the bracket, the blocking structure closes the avoidance opening; when the blocking structure opens the avoidance opening, the workbench can rotate relative to the bracket.

[0027] According to a turning device for a refrigerator provided by the utility model, the blocking structure includes a blocking plate and two plug-in components, the two plug-in components are respectively arranged at opposite ends of the blocking plate, and plug-in channels are arranged at opposite ends of the bracket corresponding to the avoidance opening;

[0028] Wherein, when the avoidance opening is in a closed state, the sealing plate is located in the avoidance opening, and the plug-in component corresponds to the plug-in channel one by one and is detachably plugged in and matched.

[0029] According to a turning device for a refrigerator provided by the utility model, the turning device further comprises a locking structure, and when the workbench is in an initial position relative to the bracket, the locking structure is used to lock the relative positions of the workbench and the bracket.

[0030] According to a turning device for a refrigerator provided by the utility model, the locking structure comprises a locking seat and a spring pin, one of the locking seat and the spring pin is arranged on the workbench, and the other of the locking seat and the spring pin is arranged on the bracket;

[0031] Wherein, a locking channel is provided on the locking seat, and the spring column pin is engaged with the lock by insertion to limit the workbench from flipping relative to the bracket.

[0032] The utility model provides a turning device for a refrigerator. A workbench and a bracket are provided. The refrigerator is installed on the workbench. Driven by a driving mechanism, the pulse tube refrigerator can turn over relative to the bracket following the workbench, so that the pulse tube refrigerator has multiple operating angles. In addition, since the driving mechanism has a self-locking state, it is of great significance for extremely low temperature experiments. The refrigerator can be effectively suspended and self-locked in all directions to ensure accurate measurement results. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0034] Figure 1 It is a structural schematic diagram of the initial position of the workbench of the turning device provided by the utility model, wherein the refrigerator is operated vertically;

[0035] Figure 2 It is a structural schematic diagram of the working table of the turning device provided by the utility model rotated to 30 degrees;

[0036] Figure 3 It is a structural schematic diagram of the working table of the turning device provided by the utility model rotated to 90 degrees;

[0037] Figure 4 It is a structural schematic diagram of the working table of the turning device provided by the utility model rotated to 180 degrees;

[0038] Figure 5 It is a schematic diagram of the matching structure of the driving mechanism, the first bearing component and the second bearing component provided by the utility model.

[0039] Reference numerals:

[0040] 100, bracket; 110, installation area; 120, avoidance opening; 130, plug-in channel; 200, workbench; 300, driving mechanism; 310, fixing seat; 311, support frame; 312, vertical plate; 3121, first concave cavity; 3122, second concave cavity; 31221, first bearing groove; 31222, second bearing groove; 320, transmission shaft; 330, turbine; 340, worm; 350, driving member; 410, first bearing member; 420, second bearing member; 510, first bearing seat; 520, second bearing seat; 600, blocking structure; 610, blocking plate; 620, plug-in member; 710, locking seat; 720, spring pin; A, refrigerator. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are 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.

[0042] Combine the following Figure 1-Figure 5 Describing the flipping device for a refrigerator of the present invention, it should be noted that the type of the above-mentioned refrigerator A is a pulse tube refrigerator. Of course, in some embodiments, the flipping device can also be applied to other types of refrigerators A, which is not limited here.

[0043] Reference Figures 1 to 5 According to the utility model, a flipping device for a refrigerator is provided, including a bracket 100, a workbench 200 and a driving mechanism 300. The workbench 200 is used to install the refrigerator A. The workbench 200 is rotatably connected to the bracket 100. The driving mechanism 300 is arranged on the bracket 100. The output end of the driving mechanism 300 is transmission-connected to the bracket 100 to drive the workbench 200 to flip relative to the bracket 100; wherein the driving mechanism 300 has a self-locking state so that the workbench 200 hovers to a preset angle.

[0044] The utility model provides a turning device for a refrigerator. A workbench 200 and a bracket 100 are provided. A refrigerator A is installed on the workbench 200. Driven by a driving mechanism 300, the refrigerator can turn over relative to the bracket 100 following the workbench 200, so that the refrigerator has multiple operating angles. Moreover, since the driving mechanism 300 has a self-locking state, it is of great significance for extremely low temperature experiments. The refrigerator A can be effectively suspended and self-locked in all directions to ensure accurate measurement results.

[0045] It should be noted that in the embodiments of the utility model, the above-mentioned flipping device can be placed at room temperature, or it can be placed at low temperature or high temperature to work; the flipping device can be fixed on the foundation for use, or it can be moved, and the working scenes can be switched at will.

[0046] It should also be noted that, in the embodiment of the utility model, the workbench 200 is flipped relative to the bracket 100, which provides great convenience in arranging the wiring harness of the refrigerator thermometer. The operator no longer needs to drill under the shelf to wire, which can greatly improve work efficiency and improve human-machine coordination.

[0047] It is understandable that, referring to Figures 1 to 5In the embodiment of the utility model, the driving mechanism 300 includes a fixed seat 310, a transmission shaft 320, a turbine 330, a worm 340 and a driving member 350. The fixed seat 310 is fixedly connected to the bracket 100, one end of the transmission shaft 320 is transmission-connected to the workbench 200, the turbine 330 is fixedly connected to the other end of the transmission shaft 320, the worm 340 is rotatably disposed on the fixed seat 310, the worm 340 is meshed with the turbine 330 for transmission, the driving member 350 is disposed at one end of the worm 340, and the driving member 350 drives the worm 340 to rotate relative to the fixed seat 310.

[0048] With the above structure, the driving mechanism 300 is a turbine 330 worm 340 reducer mechanism, and the worm 340 is driven to rotate by the driving member 350 to realize the rotation of the turbine 330, and then the transmission shaft 320 is driven to rotate, so that the workbench 200 is flipped relative to the bracket 100 under the transmission rotation of the transmission shaft 320 to adjust the operating angle of the refrigerator A. The turbine 330 worm 340 transmission method can achieve efficient, stable and reliable power transmission, which is small in size, light, safe and reliable, can achieve a large reduction ratio transmission, and has a large load. For example, in this embodiment, it can drive a load of hundreds of kilograms.

[0049] Specifically, in this embodiment, the driving member 350 is a hand wheel fixedly connected to the worm 340. With the above structure, since the driving member 350 is a hand wheel, the operator can manually rotate the hand wheel to rotate the worm 340. The above manual control method is very intuitive and suitable for occasions where the operator needs to directly control; it can achieve more precise adjustment, and the operator can control the rotation of the worm 340 by rotating the hand wheel according to the angle required, which can achieve relatively stable operation and relatively low cost; since the manual hand wheel method is simple and easy to understand, it has a wide range of applicability and can be applied to various occasions where manual control is required, such as small mechanical equipment, laboratory instruments, and teaching models.

[0050] Of course, in some embodiments, the driving member 350 may also be a driving motor or other structures, which is not limited here.

[0051] It is understandable that, referring to Figures 1 to 5 In the embodiment of the utility model, the fixed seat 310 includes a support frame 311 and a vertical plate 312, one end of the support frame 311 is fixedly connected to the bracket 100, and a side wall of the support frame 311 is fixedly connected to the vertical plate 312, and a first concave cavity 3121 and a second concave cavity 3122 are provided on the vertical plate 312, and a side wall of the first concave cavity 3121 is connected to a side wall of the second concave cavity 3122; wherein, the turbine 330 is rotatably disposed in the first concave cavity 3121, the worm 340 is rotatably disposed in the second concave cavity 3122, and the end of the transmission shaft 320 is rotatably penetrated through the vertical plate 312, and extends into the first concave cavity 3121 and is fixedly connected to the turbine 330.

[0052] With the above structure, one end of the support frame 311 is fixedly connected to the bracket 100, and one side wall of the support frame 311 is fixedly connected to the vertical plate 312, which can optimize the overall structure of the fixed seat 310 and ensure that the turbine 330 and the worm 340 are firmly supported and fixed; the combination of the support frame 311 and the vertical plate 312 provides the structural stability required by the fixed seat 310, ensuring that the turbine 330 and the worm 340 maintain a stable position and motion trajectory during operation; the first concave cavity 3121 and the second concave cavity 3122 on the vertical plate 312 A positioning function is provided for the turbine 330 and the worm 340. The turbine 330 is arranged in the first concave cavity 3121, and the worm 340 is arranged in the second concave cavity 3122, which helps to ensure that they maintain the correct position and direction during the transmission process; the end of the transmission shaft 320 passes through the vertical plate 312 and extends into the first concave cavity 3121 to be fixedly connected with the turbine 330. This transmission connection method ensures reliable transmission between the turbine 330 and the transmission shaft 320, and enables the turbine 330 to achieve power transmission through the rotation of the worm 340.

[0053] Specifically, refer to Figures 1 to 5 In the embodiment of the utility model, the flipping device includes a first bearing member 410 and a second bearing member 420. The inner wall of the second concave cavity 3122 is provided with a first bearing groove 31221 and a second bearing groove 31222. The first bearing member 410 is installed in the first bearing groove 31221, and the second bearing member 420 is installed in the second bearing groove 31222; wherein the first bearing member 410 and the second bearing member 420 are both sleeved on the worm 340. Through the above arrangement, the first bearing member 410 and the second bearing member 420 are respectively installed in the first bearing groove 31221 and the second bearing groove 31222 in the second concave cavity 3122, providing double support for the worm 340, helping to reduce friction and vibration, and ensuring the stability and stability of the worm 340 during operation.

[0054] It should be noted that, in some embodiments, the driving mechanism 300 may also be configured as other transmission mechanical modes, such as a gear rack transmission, and be equipped with a corresponding self-locking structure, etc., which is limited here.

[0055] Specifically, refer to Figures 1 to 4In the embodiment of the utility model, the first bearing seats 510 are provided at the opposite ends of the bracket 100, and the second bearing seats 520 are provided at the opposite ends of the workbench 200; one of the first bearing seats 510 and one of the second bearing seats 520 are rotatably connected through a rotating shaft, and the output end of the drive mechanism 300, i.e., the transmission shaft 320, is rotatably matched with the other first bearing seat 510 and fixedly connected with the other second bearing seat 520. Through the above arrangement, the design of the first bearing seat 510 and the second bearing seat 520 can withstand the weight and force brought by the movement of the workbench 200, play the role of supporting and transmitting torque, and ensure the stability and safety of the workbench 200 during operation; through the rotating shaft connection and fixed connection, a stable mechanical connection is formed between the bracket 100, the workbench 200 and the drive mechanism 300, realizing the rotation and position adjustment functions of the workbench 200.

[0056] It is understandable that, referring to Figures 1 to 4 In an embodiment of the utility model, the bracket 100 is provided with an installation area 110 and an avoidance opening 120 connected to the installation area 110; the workbench 200 is located in the installation area 110, and the bracket 100 is further provided with a blocking structure 600, which is used to open or close the avoidance opening 120; wherein, when the workbench 200 is fixed relative to the bracket 100, the blocking structure 600 closes the avoidance opening 120; when the blocking structure 600 opens the avoidance opening 120, the workbench 200 can be flipped relative to the bracket 100. By adopting the above structure, a blocking structure 600 and an avoidance opening 120 are provided. When flipping is not required, the blocking structure 600 closes the avoidance opening 120 to increase the rigidity and stability of the overall bracket 100; when flipping is required, the avoidance opening 120 is opened by the blocking structure 600, and the operating drive mechanism 300 drives the workbench 200 to flip relative to the bracket 100. Flexible working state switching is achieved between the bracket 100 and the workbench 200, which can not only ensure the stability and safety of the workbench 200 in a fixed state, but also realize the flipping function of the workbench 200 when needed, thereby improving work efficiency and versatility.

[0057] Specifically, refer to Figures 1 to 4In an embodiment of the utility model, the sealing structure 600 includes a sealing plate 610 and two plug-in components 620, and the two plug-in components 620 are respectively arranged at opposite ends of the sealing plate 610, and plug-in channels 130 are provided at opposite ends of the bracket 100 corresponding to the avoidance opening 120; wherein, when the avoidance opening 120 is in a closed state, the sealing plate 610 is located in the avoidance opening 120, and the plug-in components 620 correspond to the plug-in channels 130 one by one and are detachably plugged in and matched. It can be understood that the above-mentioned bracket 100 is a frame structure, and a notch on one side of the bracket 100 is set to form an avoidance opening 120. Affected by the length of the refrigerator A (refrigerator), the sealing plate 610 interferes with the workbench 200 when driving the refrigerator A to rotate, thereby limiting the flipping of the workbench 200; when the plug-in relationship between the connector 620 and the plug-in channel 130 is released and the sealing plate 610 is removed, the workbench 200 can drive the refrigerator A to flip relative to the bracket 100, with a simple structure and convenient operation.

[0058] It should be noted that, in the present embodiment, the above-mentioned connector 620 is a bolt, and an internal thread which cooperates with the bolt is provided in the plug-in channel 130. The bolt is rotated to fix or detach the sealing plate 610 from the bracket 100. The structure is simple, the manufacturing cost is low, and the stability is good. The sealing structure 600 is not easy to detach from the avoidance opening 120. Of course, in some embodiments, the above-mentioned sealing plate 610 can also be detachably connected to the bracket 100 by means of a pin shaft or a clamping connection.

[0059] It can be understood that in the embodiment of the utility model, the flipping device further includes a locking structure, and when the workbench 200 is in the initial position relative to the bracket 100, the locking structure is used to lock the relative position of the workbench 200 and the bracket 100. It can be understood that when the refrigerator A is running vertically (the cold end is facing downward), the workbench 200 is locked by the locking structure to restrict the flipping of the workbench 200, so as to achieve stable operation of the refrigerator A.

[0060] Specifically, refer to Figures 1 to 4 In an embodiment of the utility model, the locking structure includes a locking seat 710 and a spring pin 720, one of the locking seat 710 and the spring pin 720 is arranged on the workbench 200, and the other of the locking seat 710 and the spring pin 720 is arranged on the bracket 100; wherein, a locking channel is provided on the locking seat 710, and the spring pin 720 cooperates with the locking through insertion to limit the workbench 200 from flipping relative to the bracket 100.

[0061] By adopting the above structure, elastic compression is provided by the spring plunger. When the workbench 200 needs to be locked, the spring pin 720 is lowered and elastically inserted into the locking channel of the locking seat 710; when the workbench 200 needs to be flipped, the spring pin 720 is pulled out of the locking channel of the locking seat 710. The structure is simple, the operation is convenient, and the stability is good.

[0062] Of course, in some embodiments, the locking structure can also be implemented by plugging or elastic snapping to achieve relative fixation of the workbench 200 and the bracket 100 when the refrigerator A is running vertically (with the cold end facing downward).

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A turning device for a refrigerator, characterized in that: include: Bracket (100); A workbench (200) for installing the refrigerator (A), wherein the workbench (200) is rotatably connected to the bracket (100); A driving mechanism (300), the driving mechanism (300) being arranged on the support (100), and an output end of the driving mechanism (300) being drivingly connected to the support (100) so as to drive the workbench (200) to flip relative to the support (100); Wherein, the driving mechanism (300) has a self-locking state, so that the workbench (200) is suspended to a preset angle.

2. The turning device for refrigerator according to claim 1, characterized in that: The driving mechanism (300) comprises: A fixing seat (310), the fixing seat (310) being fixedly connected to the bracket (100); A transmission shaft (320), one end of which is transmission-connected to the workbench (200); a turbine (330), wherein the turbine (330) is fixedly connected to the other end of the transmission shaft (320); A worm (340), the worm (340) being rotatably disposed on the fixed seat (310), the worm (340) being meshed with the turbine (330) for transmission; A driving member (350) is disposed at one end of the worm (340), and the driving member (350) drives the worm (340) to rotate relative to the fixing seat (310).

3. The turning device for refrigerator according to claim 2, characterized in that: The driving member (350) is a hand wheel fixedly connected to the worm (340).

4. The turning device for a refrigerator according to claim 2, characterized in that: The fixing seat (310) comprises a support frame (311) and a vertical plate (312), one end of the support frame (311) is fixedly connected to the bracket (100), and a side wall of the support frame (311) is fixedly connected to the vertical plate (312), and a first concave cavity (3121) and a second concave cavity (3122) are provided on the vertical plate (312), and a side wall of the first concave cavity (3121) is connected to a side wall of the second concave cavity (3122); The turbine (330) is rotatably disposed in the first concave cavity (3121), the worm (340) is rotatably disposed in the second concave cavity (3122), and the end of the transmission shaft (320) is rotatably penetrated through the vertical plate (312) and extends into the first concave cavity (3121) to be fixedly connected with the turbine (330).

5. The turning device for refrigerator according to claim 4, characterized in that: The turning device comprises a first bearing member (410) and a second bearing member (420); the inner wall of the second concave cavity (3122) is provided with a first bearing groove (31221) and a second bearing groove (31222); the first bearing member (410) is installed in the first bearing groove (31221), and the second bearing member (420) is installed in the second bearing groove (31222); Wherein, the first bearing component (410) and the second bearing component (420) are both externally mounted on the worm (340).

6. The turning device for refrigerator according to claim 1 or 2, characterized in that: The bracket (100) is provided with a first bearing seat (510) at two opposite ends, and the workbench (200) is provided with a second bearing seat (520) at two opposite ends; One of the first bearing seats (510) and one of the second bearing seats (520) are rotationally connected via a rotating shaft, and the output end of the driving mechanism (300) is rotationally matched with another of the first bearing seats (510) and is fixedly connected to another of the second bearing seats (520).

7. The turning device for refrigerator according to claim 1, characterized in that: The bracket (100) is provided with a mounting area (110) and an avoidance opening (120) communicating with the mounting area (110); The workbench (200) is located in the installation area (110), and the bracket (100) is further provided with a blocking structure (600), and the blocking structure (600) is used to open or close the avoidance opening (120); Wherein, when the workbench (200) is fixed relative to the bracket (100), the blocking structure (600) closes the avoidance opening (120); when the blocking structure (600) opens the avoidance opening (120), the workbench (200) can rotate relative to the bracket (100).

8. The turning device for refrigerator according to claim 7, characterized in that: The blocking structure (600) comprises a blocking plate (610) and two plug-in connectors (620), wherein the two plug-in connectors (620) are respectively arranged at opposite ends of the blocking plate (610), and plug-in channels (130) are arranged at opposite ends of the bracket (100) corresponding to the avoidance opening (120); Wherein, when the avoidance opening (120) is in a closed state, the sealing plate (610) is located in the avoidance opening (120), and the plug-in component (620) corresponds to the plug-in channel (130) one by one and is detachably plugged in and matched.

9. The turning device for a refrigerator according to claim 1, characterized in that: The turning device further comprises a locking structure, and when the workbench (200) is in an initial position relative to the bracket (100), the locking structure is used to lock the relative position of the workbench (200) and the bracket (100).

10. The turning device for a refrigerator according to claim 9, characterized in that: The locking structure comprises a locking seat (710) and a spring pin (720), one of the locking seat (710) and the spring pin (720) is arranged on the workbench (200), and the other of the locking seat (710) and the spring pin (720) is arranged on the bracket (100); The locking seat (710) is provided with a locking channel, and the spring pin (720) is engaged with the lock by insertion to limit the workbench (200) from turning over relative to the bracket (100).

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