Freezer air-cooling internal circulation device

Abstract

The utility model relates to a refrigerator air-cooling internal circulation device, which comprises a compressor, a condenser pipe, a delivery pipe, a filter, a cleaning device, an evaporation pipe, a capillary pipe and a recovery pipe, through the additional arrangement of the cleaning device, when the inner side of a wall plate needs to be cleaned, a sealing plug is taken down from a port of the wall plate, and then the filter is taken out from a clamping seat; a person holds a handle by hand and pushes and pulls a displacement seat to enable a connecting plate frame to generate inclination change, so that the wiping blocks at the three positions can generate inward shrinkage position change along with the change of the connecting plate frame, the person penetrates the whole wiping assembly into the inner side of the wall plate, and then the positions of the wiping blocks are adjusted according to the radial width of the inner side of the wall plate; the wiping block is arranged on the inner wall face of the wall plate and abuts against the inner wall face of the wall plate, the whole wiping assembly is manually moved by a person, the wiping block can wipe and clean the inner wall of the wall plate, and a dirt layer is prevented from being formed on the inner wall face of the wall plate.

Description

Technical Field

[0001] The utility model relates to the technical field of freezers, in particular to an air-cooled internal circulation device for a freezer. Background Art

[0002] There is also internal circulation in the refrigerator compartment. By accelerating air flow or natural convection, the refrigeration effect is improved. In refrigerators, there are methods of natural convection cooling of cold air (direct cooling) and forced convection cooling of cold air.

[0003] When optimizing the existing air-cooled internal circulation device for freezers, most of them are reflected in effectively ensuring the uniformity of the distribution of cold air in the cabinet and reducing the overall temperature difference coefficient. For example, the Chinese invention patent with the application number CN202211446936.8 discloses "An air-cooled freezer for realizing internal circulation of cold air". In this device, the interior of the cabinet has an equipment installation area and an item storage area. The refrigeration device is installed in the equipment installation area. A plurality of parallel diversion channels are arranged on the top surface inside the cabinet. The diversion channels linearly extend from the equipment installation area to the item storage area; a cold air outlet is provided at the top of the refrigeration device, an air return port is provided at a position near the bottom of the refrigeration device, and air supply ports are respectively provided on both sides of the refrigeration device at a position between its cold air outlet and its air return port, effectively ensuring the uniformity of the distribution of cold air in the cabinet, reducing the overall temperature difference coefficient, avoiding the problem that the refrigeration effect is affected by the blockage of the air outlet by items in the cabinet, and at the same time avoiding the reduction of the service life of the refrigeration device due to its too high operating rate and long-term working state.

[0004] Although the above-mentioned air-cooled internal circulation device for freezers has certain advantages in effectively ensuring the uniformity of the distribution of cold air in the cabinet and reducing the overall temperature difference coefficient, it still has certain drawbacks: For air-cooled internal circulation, it is necessary to use a filter to filter impurities and moisture from the gas and liquid compressed by the pipeline. An impurity fouling layer is easily formed in the filter. If the inside of the filter is not cleaned in time frequently, the fouling layer thickens, resulting in poor filtering effect. Summary of the Utility Model

[0005] (1) Technical Problems to be Solved

[0006] To solve the above technical problems, the utility model provides an air-cooled internal circulation device for a freezer.

[0007] (2) Technical Solutions

[0008] Based on this, the present utility model provides the following technical solutions: A cold cabinet air-cooled internal circulation device, including a compressor, a condensing pipe, a conveying pipe, a filter, a cleaning device, an evaporating pipe, a capillary tube, and a recovery pipe. One side end of the compressor is fixedly connected to the lower end of the condensing pipe and is internally penetrated. The cleaning device is installed on the outer periphery of the filter. The upper end of the condensing pipe is connected to the side end of the recovery pipe. The upper end of the conveying pipe is connected to the condensing pipe and is internally penetrated. The lower end of the conveying pipe is connected to a through pipe and is internally penetrated. The upper and lower ends of the filter are respectively connected to the evaporating pipe and the through pipe in a penetrating manner. The capillary tube is connected to the side end of the condensing pipe. The cleaning device includes a connecting seat, a receiving groove, and a wiping assembly. The receiving groove is an integrated structure with the connecting seat and is located on its inner side. The wiping assembly is snap-fitted in the receiving groove.

[0009] Preferably, the wiping assembly includes a handle, a displacement seat, a connecting rod, a connecting plate frame, a wiping block, a fixing plate, a connecting block, and a vertical column. The handle is fixedly connected above the displacement seat. One end of the connecting rod is hinged to the displacement seat, and the other end of the connecting rod is hinged to the connecting plate frame. The upper end of the connecting plate frame is hinged to the upper end of the displacement seat and is movably matched. The fixing plate contacts the outer side of the vertical column through the connecting block. The wiping block is hingedly connected to the lower end of the connecting plate frame.

[0010] Preferably, the filter includes a wall plate, a sealing plug, a filter plate, and a clamping seat. The sealing plug is clamped and installed at the upper and lower end positions inside the wall plate. The clamping seat is welded on the inner wall surface of the wall plate. The filter plate is press-fitted on the clamping seat. The filter plate is installed inside the wall plate.

[0011] Preferably, the outer side of the connecting seat is fixedly connected to the outer periphery of the filter.

[0012] Preferably, the wiping block is press-fitted into the inside of the receiving groove. The handle is pushed and pulled by a person, which can displace the displacement seat, change the inclination of the connecting plate frame, and cause the wiping block to expand or contract in a circular shape.

[0013] Preferably, the outer side surface of the wall plate is fixedly connected to the connecting seat.

[0014] Preferably, the outer side surface of the wiping block is in an arc shape and is in cooperation with each connecting plate frame as a group. There are three groups and they are evenly distributed in a ring shape, and it can adapt to the inner wall surface of the wall plate for wiping and cleaning.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the present utility model provides a cold cabinet air-cooled internal circulation device, which has the following

[0017] Beneficial effects:

[0018] 1. For this kind of internal air-cooled circulation device of a freezer, when the freezer is powered on, the compressor compresses the refrigerant to generate high-pressure and high-temperature gas. The high-pressure and high-temperature gas passes through the condenser tube, which can reduce the temperature, liquefy the gas, and is transmitted to the through-tube via the transmission tube. During this process, both the temperature and air pressure gradually decrease. The liquefied liquid passes through the filter to filter out impurities and moisture. The liquid coming out of the filter reaches the evaporation tube. The low-temperature liquid is transmitted to the inside of the refrigerator through the evaporation tube, and under the action of the fan, the cold air is dispersed. The evaporation tube exchanges heat with the food in the refrigerator, thus achieving the effect of fresh-keeping and freezing. The upper port of the recovery tube receives the heat of the food, and this kind of hot gas is transmitted to the compressor along the recovery tube and continues to be compressed by the action of the compressor, repeating the above work to form an air-cooled internal circulation operation.

[0019] 2. For this kind of internal air-cooled circulation device of a freezer, by adding a cleaning device, when it is necessary to clean the inner side of the wall panel, remove the sealing plug from the port of the wall panel, and then take out the filter plate from the card seat. The person holds the handle and, by pushing and pulling the displacement seat, makes the connecting plate frame generate an inclination change, which facilitates the position change of the three wiping blocks to shrink inward as the connecting plate frame changes. The person inserts the entire wiping component into the inner side of the wall panel, and then adjusts the position of the wiping blocks according to the diameter width of the inner side of the wall panel so that they are close to the inner wall surface of the wall panel. The person manually displaces the entire wiping component to make the wiping blocks wipe and clean the inner wall of the wall panel, avoiding the formation of a dirt layer on the inner wall surface of the wall panel. Brief Description of the Drawings

[0020] Figure 1 is a schematic structural diagram of the whole utility model;

[0021] Figure 2 is a schematic sectional structural diagram of the utility model;

[0022] Figure 3 is a schematic structural diagram of the cleaning device of the utility model;

[0023] Figure 4 is a schematic structural diagram of the wiping component of the utility model;

[0024] Figure 5 is a schematic structural diagram of the filter of the utility model.

[0025] In the figure: compressor - 1, condenser tube - 2, transmission tube - 3, filter - 4, cleaning device - 5, evaporation tube - 6, capillary tube - 7, recovery tube - 8, through-tube - 9, connecting seat - 51, storage groove - 52, wiping component - 53, handle - 531, displacement seat - 532, connecting rod - 533, connecting plate frame - 534, wiping block - 535, fixed plate - 536, connecting block - 537, vertical column - 538, wall panel - 41, sealing plug - 42, filter plate - 43, card seat - 44. Detailed implementation mode

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0027] Please refer to Figure 1-2 , a cold cabinet air-cooled internal circulation device, including a compressor 1, a condenser tube 2, a delivery tube 3, a filter 4, a cleaning device 5, an evaporator tube 6, a capillary tube 7 and a recovery tube 8. One side end of the compressor 1 is fixedly connected to the lower end of the condenser tube 2 and is internally penetrated. The cleaning device 5 is installed on the outer periphery of the filter 4. The upper end of the condenser tube 2 is connected to the side end of the recovery tube 8. The upper end of the delivery tube 3 is connected to the condenser tube 2 and is internally penetrated. The lower end of the delivery tube 3 is connected to a through tube 9 and is internally penetrated. The upper and lower ends of the filter 4 are respectively connected to the evaporator tube 6 and the through tube 9 in a penetrating manner. The capillary tube 7 is connected to the side end of the condenser tube 2;.

[0028] Please refer to Figure 3-4 , a cold cabinet air-cooled internal circulation device, the cleaning device 5 includes a connection seat 51, a storage groove 52 and a wiping assembly 53. The storage groove 52 and the connection seat 51 are of an integrated structure and are located on its inner side. The wiping assembly 53 is clamped and installed in the storage groove 52. The wiping assembly 53 includes a handle 531, a displacement seat 532, a connecting rod 533, a connecting plate frame 534, a wiping block 535, a fixing plate 536, a connecting block 537 and a vertical column 538. The handle 531 is fixedly connected above the displacement seat 532. One end of the connecting rod 533 is hinged to the displacement seat 532, and the other end of the connecting rod 533 is hinged to the connecting plate frame 534. The upper end of the connecting plate frame 534 is hinged to the upper end of the displacement seat 532 and is movably matched. The fixing plate 536 touches the outside of the vertical column 538 through the connecting block 537. The wiping block 535 is hingedly connected to the lower end of the connecting plate frame 534. The outside of the connection seat 51 is fixedly connected to the outer periphery of the filter 4. The wiping block 535 is pressed into the inside of the storage groove 52. When the handle 531 is pushed and pulled by a person, the displacement seat 532 can be displaced, so that the inclination of the connecting plate frame 534 changes, and the wiping block 535 expands or contracts in a circular shape. The outer side surface of the wiping block 535 is in an arc shape and cooperates with each connecting plate frame 534 as a group. There are three groups and they are evenly distributed in a ring shape, and it can adapt to wipe and clean the inner wall surface of the wall plate 41.

[0029] Please refer to Figure 5, a cold cabinet air-cooled internal circulation device. The filter 4 includes a wall panel 41, a sealing plug 42, a filter plate 43, and a card seat 44. The sealing plug 42 is clamped and installed at the upper and lower ends inside the wall panel 41. The card seat 44 is welded to the inner wall surface of the wall panel 41. The filter plate 43 is press-fitted and installed on the card seat 44. The filter plate 43 is installed inside the wall panel 41. The outer side surface of the wall panel 41 is fixedly connected to the connecting seat 51.

[0030] In summary, when the cold cabinet is in the powered-on state, the compressor 1 compresses the refrigerant to generate high-pressure and high-temperature gas. The high-pressure and high-temperature gas passes through the condenser tube 2, which can reduce the temperature, liquefy the gas, and is transmitted to the through tube 9 via the transmission tube 3. During this process, both the temperature and air pressure gradually decrease. The liquefied liquid passes through the filter 4 to filter out impurities and moisture. The liquid coming out of the filter reaches the evaporation tube 6. The low-temperature liquid is transmitted to the inside of the refrigerator through the evaporation tube 6. Under the action of the fan, the cold air is dissipated. The evaporation tube 6 exchanges heat with the food in the refrigerator, thus achieving the fresh-keeping and freezing effect. The upper port of the recovery tube 8 receives the heat of the food. This kind of hot gas is transmitted along the recovery tube 8 to the compressor 1 and is continuously compressed by the compressor 1, repeating the above work to form an air-cooled internal circulation operation. By adding the cleaning device 5, when it is necessary to clean the inside of the wall panel 41, the sealing plug 42 is removed from the port of the wall panel 41, and then the filter plate 43 is removed from the card seat 44. The person holds the handle 531 and, by pushing and pulling the displacement seat 532, causes the connecting plate frame 534 to change its inclination, facilitating the inward contraction position change of the three wiping blocks 535 following the change of the connecting plate frame 534. The person inserts the entire wiping assembly 53 into the inner side of the wall panel 41, and then adjusts the position of the wiping blocks 535 according to the inner diameter width of the wall panel 41 so that they are close to the inner wall surface of the wall panel 41. The person manually displaces the entire wiping assembly 53, enabling the wiping blocks 535 to wipe and clean the inner wall of the wall panel 41, preventing the formation of a dirt layer on the inner wall surface of the wall panel 41.

[0031] The control mode of the present utility model is controlled by manually starting and closing the switch. The wiring diagram of the power element and the power supply are common knowledge in the art. And the present utility model is mainly used to protect mechanical devices, so the control mode and wiring layout of the present utility model will not be explained in detail.

[0032] The control mode of the present utility model is automatically controlled by a controller. The control circuit of the controller can be realized by simple programming by those skilled in the art. The power supply is also common knowledge in the art. And the present utility model is mainly used to protect mechanical devices, so the control mode and circuit connection of the present utility model will not be explained in detail.

[0033] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A refrigerator air-cooled internal circulation device, comprising a compressor (1), a condenser (2), a delivery pipe (3), a filter (4), an evaporation pipe (6), a capillary tube (7) and a recovery pipe (8), wherein one side end of the compressor (1) is fixedly connected to the lower end of the condenser (2) and is internally connected, the upper end of the condenser (2) is connected to the side end of the recovery pipe (8), the upper end of the delivery pipe (3) is connected to the condenser (2) and is internally connected, the lower end of the delivery pipe (3) is connected to the through pipe (9) and is internally connected, the upper and lower ends of the filter (4) are respectively connected to the evaporation pipe (6) and the through pipe (9), and the capillary tube (7) is connected to the side end of the condenser (2); Features: The invention also comprises a cleaning device (5), the cleaning device (5) being mounted on the outer periphery of the filter (4), the cleaning device (5) comprising a connecting seat (51), a receiving groove (52) and a wiping assembly (53), the receiving groove (52) and the connecting seat (51) being an integrated structure and being located on the inner side thereof, and the wiping assembly (53) being mounted in the receiving groove (52) in a snap-fit ​​manner.

2. The air-cooling internal circulation device for a refrigerator according to claim 1, characterized in that: The wiping assembly (53) comprises a handle (531), a displacement seat (532), a connecting rod (533), a connecting plate frame (534), a wiping block (535), a fixing plate (536), a connecting block (537) and a vertical column (538); the handle (531) is embedded and fixedly connected above the displacement seat (532); one end of the connecting rod (533) is hinged to the displacement seat (532); the other end of the connecting rod (533) is hinged to the connecting plate frame (534); the upper end of the connecting plate frame (534) is hinged to the upper end of the displacement seat (532) and movably cooperates; the fixing plate (536) contacts the outer side of the vertical column (538) through the connecting block (537); and the wiping block (535) is hingedly connected to the lower end of the connecting plate frame (534).

3. The air-cooling internal circulation device for a refrigerator according to claim 1, characterized in that: The filter (4) comprises a wall plate (41), a sealing plug (42), a filter plate (43) and a holder (44); the sealing plug (42) is installed at the upper and lower ends of the inner side of the wall plate (41); the holder (44) is welded to the inner wall surface of the wall plate (41); the filter plate (43) is pressed and installed on the holder (44); and the filter plate (43) is installed inside the wall plate (41).

4. The air-cooling internal circulation device for a refrigerator according to claim 1, characterized in that: The outer side of the connection seat (51) is embedded and connected to the outer periphery of the filter (4).

5. The air-cooling internal circulation device for a refrigerator according to claim 2, characterized in that: The wiping block (535) is embedded in the interior of the receiving groove (52).

6. The air-cooling internal circulation device for a refrigerator according to claim 3, characterized in that: The outer side surface of the wall plate (41) is embedded and connected to the connecting seat (51).

7. The air-cooling internal circulation device for a refrigerator according to claim 2, characterized in that: The outer side surface of the wiping block (535) is in an arc shape and cooperates with each connecting plate frame (534) as a group. There are three groups and they are evenly distributed in a ring shape.

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