Damper assembly and refrigeration appliance

Abstract

The application discloses a damper assembly and a refrigeration equipment. The damper assembly comprises a door frame, a door body, a driving part and a detection part. The driving part is used for driving the door body to rotate around a hinge seat. The detection part is used for detecting whether the actual rotation amount of the door body reaches a preset rotation amount. The damper assembly does not need to directly observe the state of the door body, and does not need to disassemble the refrigeration equipment to diagnose the damper fault. Instead, the detection part is used for accurately positioning the operating state of the door body, judging the current actual rotation amount of the door body, comparing the current actual rotation amount with the preset rotation amount, judging whether the door body is moved to the position, adjusting the angle of the door body in time, making the refrigeration equipment send cold air according to the expected air volume, and facilitating the judgment and maintenance of the maintenance personnel.

Description

TECHNICAL FIELD

[0001] The present application relates to a damper assembly, in particular to a refrigeration device with the damper assembly. BACKGROUND

[0002] The refrigeration device in the form of air cooling needs to set the damper to control the circulation and closing of cold air. If the damper movement fails, for example, the operation instruction is wrong, the structure is faulty or is frozen by ice, the opening is abnormal. But since the damper is generally located inside the refrigeration device, the state of the damper cannot be observed directly from the outside, so even if the damper fails, the user cannot find out the cause of the refrigeration device failure, and for the maintenance personnel, further judgment can be made only after disassembling the refrigeration device, which makes it inconvenient to find out the cause of the failure in the maintenance process, the maintenance process is time-consuming, and the user's experience is affected. SUMMARY

[0003] To solve the problems in the prior art, the purpose of the present application is to provide a damper assembly and a refrigeration device with the damper assembly.

[0004] To achieve the above-mentioned purpose of the application, an embodiment of the present application provides a damper assembly, comprising:

[0005] a door frame, comprising a frame body, a hinge seat connected to the frame body, and an air inlet surrounded by the frame body;

[0006] a door body, comprising a door body and a rotating member fixedly connected to the door body, the rotating member being rotatably connected to the hinge seat, and the door body being used to open or close the air inlet;

[0007] a driving part for driving the door body to rotate around the hinge seat;

[0008] a detection part for detecting whether the actual rotation amount of the rotating member reaches a preset rotation amount.

[0009] As a further improvement of the present application, the hinge seat is provided as a hollow sleeve with a cylindrical hole, and the rotating member is provided as a cylindrical shaft, which is embedded in the hollow sleeve.

[0010] As a further improvement of the present application, the detection part comprises a detection circuit, which comprises an electric signal detection module, an electric wire, a contact member fixedly connected to the hinge seat, and a resistance member fixedly connected to the rotating member, the contact member and the resistance member are connected to the electric wire, the contact member is in sliding contact with the resistance member, when the rotating member rotates, the contact member and the resistance member move relatively, the electric signal detection module detects the change of the current and / or voltage of the detection circuit, and the detection circuit always forms a closed loop.

[0011] As a further improvement of the present application, the resistance member is attached to the surface of the rotating shaft, and the contact member is fixed to the hollow sleeve, and the end of the contact member abuts against the resistance member.

[0012] As a further improvement of the present application, the electric signal detection module is provided as a processing module, which detects the current value of the detection circuit.

[0013] As a further improvement of the present application, the detection part comprises a torque detection module and an elastic member connected between the torque detection module and the rotating member, and when the rotating member rotates, the elastic member deforms, and the torque detection module detects the change of the torque size.

[0014] As a further improvement of the present application, the elastic member is provided as a coil spring, one end of which is connected to the rotating member, and the other end of which is connected to the torque detection module.

[0015] As a further improvement of the present application, when the actual rotating amount does not reach the preset rotating amount, the driving part drives the door body to reset.

[0016] As a further improvement of the present application, the driving part comprises a stepping motor, which controls the rotation of the door body according to a driving stepping signal, and the preset rotating amount is determined according to the driving stepping signal.

[0017] To achieve one of the above-mentioned purposes, an embodiment of the present application provides a refrigeration equipment comprising the above-mentioned air door assembly.

[0018] Compared with the prior art, the present application has the following beneficial effects: the air door assembly does not need to directly observe the state of the door body, and does not need to disassemble the refrigeration equipment to diagnose the air door failure, but accurately locates the running state of the door body by the detection part, judges the current actual rotating amount of the door body, and compares it with the preset rotating amount, so as to judge whether the door body has moved to the right position, which is convenient for timely adjusting the angle of the door body, making the refrigeration equipment send cold air according to the expected air volume, and is convenient for maintenance personnel to judge and maintain. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a structural schematic view of the air door assembly of the first embodiment of the present application;

[0020] Figure 2 is a sectional view of part of the structure of the door body in the closed state of the first embodiment of the present application;

[0021] Figure 3 is a sectional view of part of the structure of the door body in the open state of the first embodiment of the present application;

[0022] Figure 4is a coordinate graph of the relationship between the rotation angle of the door body and the resistance value of the first embodiment of the application;

[0023] Figure 5 is a sectional view of part of the structure of the open state of the door body of the second embodiment of the application;

[0024] Figure 6 is a sectional view of part of the structure of the air door assembly of the third embodiment of the application;

[0025] Figure 7 is a coordinate graph of the relationship between the rotation angle of the door body and the torque of the third embodiment of the application;

[0026] wherein, 100, air door assembly; 10, door frame; 11, frame body; 12, air port; 13, hinge seat; 20, door body; 21, door body; 22, rotating part; 31, detection circuit; 311, electric signal detection module; 312, resistance part; 313, contact part; 314, electric wire; 32, elastic part; 13a, hinge seat; 22a, rotating part. DETAILED DESCRIPTION

[0027] The application will be described in detail below with reference to the specific embodiments shown in the drawings. However, these embodiments do not limit the application, and the changes in structure, method, or function made by those of ordinary skill in the art based on these embodiments are included in the protection scope of the application.

[0028] An embodiment of the application provides a kind of air door assembly and the refrigeration equipment with the air door assembly, the air door assembly can judge whether to move to place, it is convenient to adjust door body angle in time, make refrigeration equipment send cold according to the expected air volume, and it is convenient for maintenance personnel to maintain.

[0029] The refrigeration equipment of the embodiment can be refrigerator, refrigerator, wine cabinet, and the refrigeration equipment is a kind of equipment in the form of air cooling refrigeration, refrigeration equipment includes refrigeration room, compressor, condenser, throttling pipeline, evaporator, air supply piece, air door assembly 100 etc., air supply piece blows air flow through evaporator to carry out heat exchange, air door assembly 100 has open state and closed state, when air door assembly 100 is in open state, cold air passing through evaporator is sent into refrigeration room by air door assembly 100, when air door assembly 100 is in closed state, cold air will not enter refrigeration room.

[0030] As Figure 1As shown, the air door assembly 100 of the embodiment includes a door frame 10, a door body 20, and a driving part. The door frame 10 includes a frame body 11, a hinge seat 13 connected to the frame body 11, and an air inlet 12 surrounded by the frame body 11. The door body 20 includes a door body 21 and a rotating part 22 fixedly connected to the door body 21. The rotating part 22 is rotationally connected to the hinge seat 13. The door body 21 is used to open or close the air inlet 12. The driving part is used to drive the door body 20 to rotate around the hinge seat 13. When the door body 20 is opened, the air door assembly 100 is in an open state, and cold air is blown to the refrigeration compartment through the air inlet 12. When the door body 20 is closed, the air door assembly 100 is in a closed state, and cold air cannot be blown to the refrigeration compartment through the air inlet 12. When the door body 20 is in an intermediate position between the open and closed positions, the size of the air outlet can be controlled by adjusting the rotation angle of the door body 20. The opening and closing of the door body 20 and the specific angle of opening are controlled by the driving part.

[0031] The air door assembly 100 of the embodiment further includes a detection part. The detection part is used to detect whether the actual rotation amount of the rotating part 22 reaches a preset rotation amount. The detection part detects the actual position of the opening of the door body 20 and judges the specific angle of the current opening. When the actual rotation amount does not reach the preset rotation amount, the user can be informed in the form of an alarm, or the adjustment can be made in the form of resetting and self-checking, thereby avoiding the problem that the air door operation fails due to common failure forms of the air door assembly 100 such as failure, jamming, wire breakage, and pulse deviation caused by step motor step loss and crawling. The air door assembly 100 does not need to directly observe the state of the door body 20. The air door failure diagnosis can be realized without disassembling the refrigeration equipment. Instead, the detection part is used to accurately locate the running state of the door body 20, and then the angle of the door body 20 driven by the driving part is compared, so as to judge whether the door body 20 moves to the position. The door body 20 angle can be adjusted in time, the refrigeration equipment can send cold air according to the expected air outlet, and the maintenance personnel can judge and maintain.

[0032] Embodiment 1

[0033] In the embodiment, the hinge seat 13 is provided as a hollow sleeve with a cylindrical hole, and the rotating part 22 is provided as a cylindrical shaft. The shaft is embedded in the hollow sleeve, as shown in FIGS. 1, 2, 3, or 4. Figure 2 The shaft of the door body 20 is inserted into the hinge seat 13. When the driving part drives the door body 20 to rotate, the door body 20 is limited to perform a flipping motion by the hinge seat 13.

[0034] The detecting part comprises a detecting circuit 31, which comprises an electric signal detecting module 311, an electric wire 314, a contact piece 313 fixedly connected to the hinge base 13, and a resistance piece 312 fixedly connected to the rotating piece 22. The contact piece 313 and the resistance piece 312 are both connected to the electric wire 314, and the contact piece 313 is in sliding contact with the resistance piece 312. When the rotating piece 22 rotates, the contact piece 313 and the resistance piece 312 move relatively. The electric signal detecting module 311 detects the change of the current and / or the voltage of the detecting circuit 31, and the detecting circuit 31 always forms a closed loop. The resistance value of the resistance piece 312 connected to the circuit changes with the change of the contact position of the contact piece 313. In this embodiment, the resistance value gradually increases, and the degree of the increase of the resistance value corresponds to the opening angle of the door body 20. As shown in FIG. 6, according to the corresponding relationship between the change of the resistance value and the rotating angle, the current resistance value can be measured to detect the opening angle of the door body 20. Figure 2 When the door body 20 is gradually opened, the state shown in FIG. 7 is switched to. At this time, the resistance value of the resistance piece 312 connected to the circuit changes with the change of the contact position of the contact piece 313. In this embodiment, the resistance value gradually increases, and the degree of the increase of the resistance value corresponds to the opening angle of the door body 20. As shown in FIG. 8, according to the corresponding relationship between the change of the resistance value and the rotating angle, the current resistance value can be measured to detect the opening angle of the door body 20. Figure 3 Figure 4

[0035] Further, the resistance piece 312 is attached to the surface of the rotating shaft, and the contact piece 313 is fixed to the hollow sleeve. The end of the contact piece 313 abuts against the resistance piece 312. The resistance piece 312 is in the form of a sheet and is attached to the surface of the rotating piece 22. The end of the contact piece 313 is a conductor and always abuts against the surface of the resistance piece 312. During the rotation of the door body 20, the end of the contact piece 313 is in sliding contact with the resistance piece 312. The resistance between the end of the contact piece 313 in contact with the resistance piece 312 and the end of the electric wire 314 connected to the resistance piece 312 changes with the change of the contact position of the conductor.

[0036] In addition, the electric signal detecting module 311 is a processing module that detects the current value of the detecting circuit 31. The refrigeration equipment comprises a general processing module, which can be a central processing unit (CPU), a micro processing module, an application specific integrated circuit (ASIC), or one or more integrated circuits. The electric signal detecting module 311 is integrated on the general processing module. The integrated module can be realized in the form of hardware or in the form of a hardware and software function module. The general processing module detects the change of the current or the change of the voltage, and determines the change of the resistance value of the resistance piece 312 and the contact piece 313, so as to determine the rotating angle of the door body 20.

[0037] ​​When the actual rotation amount does not reach the preset rotation amount, the driving part drives the door body 20 to reset, the driving part includes a stepping motor, the stepping motor controls the rotation of the door body 20 according to a driving step signal, and the preset rotation amount is determined according to the driving step signal. Assuming that the processing module sends 1 pulse to the stepping motor, the door body 20 rotates 1.5°, and during the opening control process of the door body 20, n pulses are sent to the stepping motor, and the door body 20 is expected to open 1.5°*n. At this time, the contact of the contact piece 313 slides to the resistance corresponding to the 1.5°*n position, the processing module collects current or voltage information to determine the resistance of the resistance piece 312 at this time, and the position state of the damper is detected in real time. If the door body 20 meets the expected opening angle, the next time period of acquisition work is performed, if the door body 20 does not meet the expected opening angle, the processing module adjusts the door body 20 or the door body 20 resets and reopens after the reset action, until the current state of the door body 20 is consistent with the expected value, and when the adjustment fails, a warning is sent to the user.

[0038] Embodiment 2

[0039] The difference between Embodiment 2 and Embodiment 1 is that the hinge seat 13a is provided as a cylindrical rotating shaft, and the rotating part 22a is provided as a hollow sleeve with a cylindrical hole, and the rotating shaft is embedded in the hollow sleeve, as shown in Figure 5 .

[0040] The rotating shaft of the door body 20 is inserted into the hinge seat 13a, and when the driving part drives the door body 20 to rotate, it is limited to do a flip motion by the hinge seat 13a. In addition, the resistance piece 312 can be attached to the inner wall of the hollow sleeve or the outer wall of the rotating shaft, and the detection principle is the same as that of Embodiment 1, that is, to establish the corresponding relationship between the rotation angle of the door body 20 and the resistance change, and when the setting position of the resistance piece 312 and the initial position of the contact piece 313 are different, the corresponding relationship can be a direct or inverse proportional relationship.

[0041] Embodiment 3

[0042] The difference between Embodiment 2 and Embodiment 1 is that in this embodiment, the corresponding relationship between the spring torque and the rotation angle is established to determine the rotation angle of the door body 20, as shown in Figure 6 and 7 .

[0043] Specifically, the detection part includes a torque detection module and an elastic piece 32 connected between the torque detection module and the rotating part 22, and the elastic piece 32 is provided as a coil spring, more specifically, a non-contact type planar spiral spring. One end of the coil spring is connected to the rotating part 22, and the other end is connected to the torque detection module, as shown in Figure 6The rotating member 22 drives the coil spring to tighten or open during rotation, and the torque will increase when the coil spring is more tightened. The torque detection module detects the change of the torque value, that is, when the rotating member 22 rotates, the elastic member 32 deforms, the torque detection module detects the change of the torque, and the corresponding relationship between the spring torque and the rotation angle of the coil spring is established. According to the corresponding relationship, the size of the rotation angle can be judged according to the detected torque value. The torque of the non-contact planar spiral spring and the rotation angle are linearly corresponding, as shown in Figure 7 .

[0044] In addition, as described in Embodiment 2, the hinge seat 13a can be set as a cylindrical rotating shaft, the rotating member 22a can be set as a hollow sleeve with a cylindrical hole, the rotating shaft is embedded in the hollow sleeve, one end of the coil spring is fixed on the hollow sleeve, and the other end is connected to the torque detection module. The detection principle is the same as the above description.

[0045] Compared with the prior art, the embodiment has the following beneficial effects:

[0046] The damper assembly 100 does not need to directly observe the state of the door body 20, and does not need to disassemble the refrigeration equipment to diagnose the damper fault. Instead, the detection part accurately locates the running state of the door body 20, judges the current actual rotation amount of the door body 20, compares it with the preset rotation amount, judges whether the door body 20 has moved to the right position, adjusts the angle of the door body 20 in time, makes the refrigeration equipment send cold according to the expected air volume, and is convenient for maintenance personnel to judge and maintain.

[0047] It should be understood that although the present specification is described in terms of embodiments, each embodiment does not contain only one independent technical solution. The description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can be combined to form other embodiments that can be understood by those skilled in the art.

[0048] The above series of detailed descriptions are only specific descriptions of the feasible embodiments of the present application, and are not used to limit the protection scope of the present application. Any equivalent embodiments or changes made without departing from the spirit of the present application should be included in the protection scope of the present application.

Claims

1. A damper assembly, characterized by, The application relates to a door assembly. The door assembly comprises a door frame and a door body. The door frame comprises a frame body, a hinge seat connected to the frame body, and an air inlet surrounded by the frame body. The hinge seat is provided as a hollow sleeve with a cylindrical hole. The door body is used for opening or closing the air inlet.

2. The damper assembly of claim 1, wherein, The door body comprises a door body and a rotating part fixedly connected to the door body.

3. The damper assembly of claim 2, wherein, The rotating part is rotatably connected to the hinge seat.

4. The damper assembly of claim 2, wherein, The rotating part is provided as a cylindrical rotating shaft embedded in the hollow sleeve.

5. The damper assembly of claim 1, wherein, A driving part is used for driving the door body to rotate around the hinge seat.

6. The damper assembly of claim 1, wherein, A detection part is used for detecting whether an actual rotating amount of the rotating part reaches a preset rotating amount.

7. A refrigeration appliance characterized in that, The detection part comprises a torque detection module and an elastic part connected between the torque detection module and the rotating part. When the rotating part rotates, the elastic part deforms. The torque detection module detects the change of the torque size. The elastic part is provided as a coil spring. One end of the coil spring is connected to the rotating part, and the other end is connected to the torque detection module. The detection part comprises a detection circuit. The detection circuit comprises an electric signal detection module, an electric wire, a contact part fixedly connected to the hinge seat, and a resistance part fixedly connected to the rotating part. The contact part and the resistance part are both connected to the electric wire. The contact part is in sliding contact with the resistance part. When the rotating part rotates, the contact part and the resistance part produce relative movement. The electric signal detection module detects the change of the current and / or voltage size of the detection circuit. The detection circuit always forms a closed loop. The resistance part is attached to the surface of the rotating shaft. The contact part is fixed to the hollow sleeve. The end of the contact part abuts against the resistance part. The electric signal detection module is provided as a processing module. The processing module detects the current value of the detection circuit. When the actual rotating amount does not reach the preset rotating amount, the driving part drives the door body to reset. The driving part comprises a stepping motor. The stepping motor controls the rotation of the door body according to a driving stepping signal. The preset rotating amount is determined according to the driving stepping signal. The application further relates to a door assembly comprising any one of the door assemblies in claims 1-6.

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