Evaporator for arc half-height cabinet

Abstract

The invention relates to the technical field of evaporators, in particular to an evaporator for an arc half-height cabinet, the evaporator comprises the arc half-height cabinet, the evaporator is fixedly mounted in the arc half-height cabinet, an air inflation chamber is fixedly mounted at the front end of the evaporator, the evaporator comprises fins and conveying pipes, the conveying pipes are fixedly mounted in the fins at equal intervals, and the conveying pipes are fixedly mounted in the fins. The circular arc half-height cabinet further comprises a circulation system, the circulation system is fixedly installed at the rear end of the top of the circular arc half-height cabinet and comprises an absorption cavity, first connecting pipes, second connecting pipes and a transmission part, the second connecting pipes are symmetrically and fixedly installed at the rear end of the absorption cavity, and the transmission part is fixedly installed at the rear end of the absorption cavity. The conveying part is fixedly installed at the bottom end of the second connecting pipe, and the first connecting pipe is fixedly installed at the bottom of the front end of the conveying part. Through the arrangement of the circulating system, the purposes of cold air recovery and pipeline blockage prevention are achieved when the evaporator in the chilled cold storage display cabinet is used.

Description

Technical Field

[0001] The invention relates to the technical field of evaporators, in particular to an evaporator for a circular arc half-height cabinet. Background Art

[0002] Evaporation is the physical process of converting liquid into gas. Generally speaking, an evaporator is an object that converts liquid substances into gas. There are a large number of evaporators in industry, of which the evaporator used in refrigeration systems is one of them. The evaporator is a very important component among the four major refrigeration components. The low-temperature condensed liquid passes through the evaporator to exchange heat with the outside air, vaporizes and absorbs heat to achieve the refrigeration effect. The evaporator is mainly composed of a heating chamber and an evaporation chamber. The heating chamber provides the liquid with the heat required for evaporation, causing the liquid to boil and vaporize. The evaporation chamber completely separates the gas and liquid phases, thereby completing the evaporation process.

[0003] At present, when the evaporator on the market is in use, since it is in an exposed state, a large amount of cold air will be lost, and the evaporator and the compressor need to work continuously to ensure the normal supply of cold air. At the same time, the dust and impurities in the external gas will adhere to the inner wall of the pipe, causing the heat exchange efficiency of the evaporator to decrease. As a result, the existing evaporator cannot perform the functions of cold air recovery and pipeline anti-blocking when in use. Therefore, a device is needed to improve the above problems. Summary of the invention

[0004] In view of the problems in the prior art, the present invention provides an evaporator for a circular arc half-height cabinet.

[0005] The technical solution adopted by the present invention to solve its technical problem is: an evaporator for an arc half-height cabinet, comprising an arc half-height cabinet, an evaporator is fixedly installed inside the arc half-height cabinet, an inflation chamber is fixedly installed at the front end of the evaporator, the evaporator comprises fins and a conveying pipe, and the conveying pipe is fixedly installed inside the fins at equidistant intervals.

[0006] Specifically, the arc half-height cabinet also includes a circulation system, which is fixedly installed at the top rear end of the arc half-height cabinet. The circulation system includes an absorption cavity, a first connecting pipe, a second connecting pipe and a transmission component. The second connecting pipe is symmetrically fixedly installed at the rear end of the absorption cavity, the transmission component is fixedly installed at the bottom end of the second connecting pipe, and the first connecting pipe is fixedly installed at the front bottom of the transmission component.

[0007] Specifically, the transmission component includes a protective rear plate, a receiving device and a supporting device. The protective rear plate is fixedly installed at the rear end of the supporting device, and the receiving device is fixedly installed at the bottom end of the supporting device.

[0008] Specifically, the receiving device includes a blocking bottom plate, an open groove, a collecting cavity, a first spring, a supporting back plate, a positioning cavity, a displacement cross key, a connecting top frame and a contact guide rod. The positioning cavity is fixedly installed on the rear end top of the collecting cavity, the supporting back plate is fixedly installed on the inner rear end of the positioning cavity, the first spring is equidistantly fixedly installed on the front end of the supporting back plate, the displacement cross key is fixedly installed on the front end of the first spring, the blocking bottom plate slides through the positioning cavity and is connected to the front end of the displacement cross key, the open groove is symmetrically opened at the inner front end of the blocking bottom plate, the connecting top frame is symmetrically fixedly installed on the top of the displacement cross key, and the contact guide rod is fixedly installed on the front end top of the connecting top frame.

[0009] Specifically, the support device includes a driving motor, a supporting shell, a nylon brush handle, a filter, a rack, a limiting guide rod, a supporting cross frame, a screw rod, a gear, a winding wheel, a guide wheel, a connecting rope, a connecting rear plate, a second spring, a baffle plate and a connecting vertical frame. The driving motor is fixedly mounted on the top of the supporting shell, the screw rod is fixedly mounted on the bottom center of the driving motor, the supporting cross frame is threadedly sleeved on the outer ring of the screw rod, the connecting vertical frame is fixedly mounted on the four corners of the bottom end of the supporting cross frame, the limiting guide rod is fixedly mounted on the rear end of the connecting vertical frame, and the rack is fixedly mounted on the side of the connecting vertical frame close to the supporting shell. The filter screen is symmetrically slidably inserted in the inner bottom end of the supporting shell, the winding wheel is rotatably installed on both sides of the inner part of the supporting shell, the wire wheel is symmetrically rotatably installed on both sides of the inner part of the supporting shell, and the wire wheel is located behind the winding wheel, the connecting rear plate is fixedly installed on both sides of the inner part of the supporting shell, and the connecting rear plate is located below the wire wheel, the second spring is fixedly installed on the front end of the connecting rear plate, the baffle plate is fixedly installed on the front end of the second spring, the gear is fixedly installed on the side end center of the winding wheel away from the supporting shell, and the connecting rope is fixedly installed between the winding wheel and the baffle plate.

[0010] Specifically, the absorption chamber is fixedly installed at the top rear end of the arc half-height cabinet, the first connecting pipe is connected to the front bottom of the supporting shell, the second connecting pipe is connected to the side top of the supporting shell, the collecting chamber is fixedly installed at the bottom end of the supporting shell, and the protective rear plate is fixedly installed at the rear end of the supporting shell.

[0011] Specifically, the width of the open groove is consistent with the thickness of the filter screen, the front end surface of the contact guide rod is arranged in an arc state, the top of the positioning cavity is symmetrically provided with movable grooves, and the interior of the collecting cavity is arranged in a hollow state.

[0012] Specifically, circular holes are provided at the top of the side end and the bottom of the front end of the support shell, the rear end bottom of the limiting guide rod is inclined at 45 degrees, and the rear end surface of the rack is vertically aligned with the front end surface of the gear.

[0013] Specifically, a plug rod is fixedly installed at the rear end of the baffle plate, and the plug rod is located at the center of the inner circle of the second spring. The distance between the two racks is greater than the length of the nylon brush handle, and the front end surface of the nylon brush handle is flush with the rear end surface of the filter.

[0014] Specifically, the limit guide rod is vertically aligned with the contact guide rod, a socket is provided at the bottom of the side end of the support shell, and the filter is located inside the socket, the baffle plate is vertically aligned with the filter, and the two ends of the support cross frame are fitted with the inner sides of the support shell.

[0015] Beneficial effects of the present invention:

[0016] First, since the arc half-high cabinet has the characteristics of small internal length direction space but large opening display area and content volume, the heat exchange area of ​​an ordinary single full-length evaporator is far from enough. Two full-length evaporators are used in a V-shape. The heat exchange area of ​​the evaporator is slightly increased, but it is not enough to completely solve the problem of insufficient heat exchange capacity and increases the installation process. The present invention uses a single special-shaped V-shaped evaporator to maximize the use of the internal space of the arc cabinet, increase the heat exchange area of ​​the evaporator, and increase the number of evaporator heat exchange fins by reducing the spacing between them to further increase the heat exchange area. In addition, the present invention adopts a full-size fin plus a small-size fin to avoid frost blockage. At the same time, it can also avoid the phenomenon that when the operating temperature of the open arc refrigerator evaporator is lower than 0°C, the fin spacing is too small, which will cause frost between the fins and cause frost blockage, resulting in the inability to exchange heat.

[0017] Secondly, the present invention is interconnected with the interior of the supporting shell through the second connecting pipe, so that the cold air can flow back to the interior of the supporting shell. At the same time, an exhaust system is arranged inside the absorption cavity, so that the exhaust system can release the cold air processed inside the supporting shell to the interior of the arc half-height cabinet again, and the cold air is sucked in and discharged in a cycle through the first connecting pipe and the second connecting pipe, so that the power of the evaporator when in use can be reduced, completing the work of cold air recovery. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the main body of the present invention from the front perspective;

[0020] Figure 2 It is a schematic diagram of the three-dimensional structure of the evaporator in the present invention from the front perspective;

[0021] Figure 3 This is a schematic diagram of the three-dimensional structure from the front perspective of the second embodiment of the arc half-high cabinet in the present invention;

[0022] Figure 4It is a schematic diagram of the three-dimensional structure of the circulation system in the present invention from a front perspective;

[0023] Figure 5 It is a partial cutaway schematic diagram of the transmission component in the present invention;

[0024] Figure 6 It is a schematic diagram of the three-dimensional structure of the receiving device of the present invention from a rear perspective;

[0025] Figure 7 It is a schematic diagram of the three-dimensional structure of the supporting device of the present invention from a rear perspective;

[0026] Figure 8 For the present invention Figure 7 A local enlarged schematic diagram of point A;

[0027] Fig. 9 It is a schematic diagram of the structure of the first existing evaporator;

[0028] Fig.10 It is a schematic diagram of the fin arrangement structure in the present invention;

[0029] Fig.11 This is a schematic diagram of the second existing evaporator structure.

[0030] Fig.12 A schematic diagram of a refrigeration cycle of the main body of the present invention;

[0031] Fig.13 It is a plan view of the main body of the present invention.

[0032] In the figure: 1-evaporator, 2-gas chamber, 3-arc half-high cabinet, 4-fin, 5-conveying pipe, 6-circulation system, 7-absorption chamber, 8-first connecting pipe, 9-second connecting pipe, 10-transmission component, 11-protective back plate, 12-receiving device, 13-support device, 14-blocking bottom plate, 15-open groove, 16-collecting chamber, 17-first spring, 18-support back plate, 19-positioning chamber, 20-displacement horizontal key, 21-connecting top frame, 22-contact guide rod, 23-drive motor, 24-support shell, 25-nylon brush handle, 26-filter screen, 27-rack, 28-limiting guide rod, 29-support horizontal frame, 30-screw rod, 31-gear, 32-winding wheel, 33-wire wheel, 34-connecting rope, 35-connecting back plate, 36-second spring, 37-blocking plate, 38-connecting vertical frame. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0034] The present invention is further described below in conjunction with the accompanying drawings.

[0035] Example 1

[0036] like Figure 1 and Figure 2 As shown, an evaporator for a circular arc half-height cabinet of the present invention comprises a circular arc half-height cabinet 3, an evaporator 1 is fixedly installed inside the circular arc half-height cabinet 3, an air charging chamber 2 is fixedly installed at the front end of the evaporator 1, the evaporator 1 comprises fins 4 and a delivery pipe 5, and the delivery pipe 5 is fixedly installed inside the fins 4 at equal distances;

[0037] In practical applications, the evaporator in the arc half-height cabinet 3 has the following problems when in use:

[0038] 1. Since the arc half-height cabinet has the characteristics of small internal length direction space but large opening display area and content volume, the heat exchange area of ​​an ordinary single full-length evaporator is far from enough (such as Fig.11 ).

[0039] 2. Use two full-length evaporators, arranged in a V shape. The heat exchange area of ​​the evaporator is slightly increased, but it is not enough to completely solve the problem of insufficient heat exchange capacity and increases the installation process (such as Fig. 9 ).

[0040] The present invention adopts a single special-shaped V-shaped evaporator, which can maximize the use of the internal space of the arc cabinet and increase the heat exchange area of ​​the evaporator. At the same time, the number of heat exchange fins of the evaporator is increased by reducing the spacing between the fins to further increase the heat exchange area. In addition, the present invention adopts a full-size fin plus a small-size fin to avoid frost blockage. At the same time, it can also avoid the phenomenon that when the operating temperature of the open arc refrigerator evaporator is lower than 0°C, the fin spacing is too small, which will cause frost blockage between the fins and cause heat exchange failure (such as Fig.10 and Fig.13 );

[0041] like Fig.12 As shown, the flow direction of the cold air is the direction indicated by the arrow, and the cold air can flow from top to bottom along the arc half-height cabinet 3, so that the cold air can contact the items on the display cabinet, and then the cold air can flow to the bottom of the arc half-height cabinet 3, and can be reabsorbed by the evaporator, so that the cold air can be circulated again.

[0042] The working principle of embodiment 1 is as follows: when in use, a support plate is installed on the arc half-height cabinet 3, and items can be placed on the support plate to complete the work of displaying items. At the same time, when the evaporator 1 is turned on, cold air can be transported to the internal front end of the arc half-height cabinet 3, so that the corruption and deterioration of items can be delayed. At the same time, by merging two evaporators 1 and greatly increasing the length, width and height of the evaporator 1, the number and length of the conveying pipe 5 are increased, so that the heat exchange capacity is increased. At the same time, the fins 4 are doubled on the conveying pipe 5, which can prevent the fins 4 from being too dense so that the wind sucked into the air chamber 2 of the evaporator 1 during the refrigeration process cannot take away the cold air and cause frost blockage. At the same time, the heat dissipation area is maximized to achieve the purpose of cooling the refrigerator. Through the structural setting of the evaporator 1, a V-shaped structure can be formed, which greatly utilizes the internal space and saves space occupancy. The fins 4 are evenly distributed, and the conveying pipe 5 is connected to the fins 4 to perform heat dissipation processing, improve the work processing efficiency, and complete the work.

[0043] Example 2

[0044] On the basis of Example 1, Figure 3 and Figure 4 As shown, the arc half-height cabinet 3 also includes a circulation system 6, which is fixedly installed at the top rear end of the arc half-height cabinet 3, the second connecting pipe 9 is symmetrically fixedly installed at the rear end of the absorption cavity 7, the transmission component 10 is fixedly installed at the bottom end of the second connecting pipe 9, and the first connecting pipe 8 is fixedly installed at the front bottom of the transmission component 10.

[0045] like Figure 5 The protective rear plate 11 is fixedly mounted on the rear end of the supporting device 13, and the receiving device 12 is fixedly mounted on the bottom end of the supporting device 13, which can support the receiving device 12 to work.

[0046] like Figure 6 The positioning cavity 19 is fixedly mounted on the rear end top of the collecting cavity 16, the supporting back plate 18 is fixedly mounted on the inner rear end of the positioning cavity 19, the first spring 17 is equidistantly fixedly mounted on the front end of the supporting back plate 18, the displacement key 20 is fixedly mounted on the front end of the first spring 17, the blocking bottom plate 14 slides through the positioning cavity 19 and is connected to the front end of the displacement key 20, the open groove 15 is symmetrically arranged at the inner front end of the blocking bottom plate 14, the connecting top frame 21 is symmetrically fixedly mounted on the top of the displacement key 20, the contact guide rod 22 is fixedly mounted on the front end top of the connecting top frame 21, a card cover is installed through the bottom end of the collecting cavity 16, and the card cover is positioned and mounted on the bottom end of the collecting cavity 16 by bolts, and the card cover can be removed so that impurities inside the collecting cavity 16 can be discharged.

[0047] like Figure 7 and Figure 8The drive motor 23 is fixedly mounted on the top of the support shell 24, the screw rod 30 is fixedly mounted on the bottom center of the drive motor 23, the support cross frame 29 is threadedly sleeved on the outer ring of the screw rod 30, the connecting vertical frame 38 is fixedly mounted on the four corners of the bottom end of the support cross frame 29, the limit guide rod 28 is fixedly mounted on the rear end of the connecting vertical frame 38, the rack 27 is fixedly mounted on the side end of the connecting vertical frame 38 close to the support shell 24, the filter screen 26 is symmetrically slidably inserted into the bottom end of the inner part of the support shell 24, the winding wheel 32 is rotatably mounted on both sides of the inner part of the support shell 24, the wire wheel 33 is symmetrically rotatably mounted on both sides of the inner part of the support shell 24, and the guide .... The wire wheel 33 is located behind the winding wheel 32, the connecting rear plate 35 is fixedly mounted on both sides of the interior of the supporting shell 24, and the connecting rear plate 35 is located below the wire wheel 33, the second spring 36 is fixedly mounted on the front end of the connecting rear plate 35, the baffle plate 37 is fixedly mounted on the front end of the second spring 36, the gear 31 is fixedly mounted on the center of the side end of the winding wheel 32 away from the supporting shell 24, the connecting rope 34 is fixedly mounted between the winding wheel 32 and the baffle plate 37, and a movable groove adapted to the contact guide rod 22 is symmetrically opened inside the rear end of the protective rear plate 11, so that the contact guide rod 22 can be allowed to slide inside the protective rear plate 11.

[0048] The absorption chamber 7 is fixedly installed at the top rear end of the arc half-height cabinet 3, the first connecting pipe 8 is connected to the front bottom of the supporting shell 24, the second connecting pipe 9 is connected to the side top of the supporting shell 24, the collecting chamber 16 is fixedly installed at the bottom end of the supporting shell 24, the protective rear plate 11 is fixedly installed at the rear end of the supporting shell 24, the width of the open groove 15 is consistent with the thickness of the filter screen 26, the front end surface of the contact guide rod 22 is set in an arc state, the top of the positioning cavity 19 is symmetrically provided with movable grooves, the interior of the collecting chamber 16 is set in a hollow state, the side top and the front bottom of the supporting shell 24 are both provided with round holes, and the limiting guide rod The rear end bottom of 28 is inclined at 45°, the rear end surface of the rack 27 is vertically aligned with the front end surface of the gear 31, a plug rod is fixedly installed on the rear end of the baffle plate 37, and the plug rod is located at the center of the inner circle of the second spring 36, the spacing between the two racks 27 is greater than the length of the nylon brush handle 25, the front end surface of the nylon brush handle 25 is flush with the rear end surface of the filter screen 26, the limit guide rod 28 is vertically aligned with the contact guide rod 22, a plug hole is provided at the bottom of the side end of the support shell 24, and the filter screen 26 is located inside the plug hole, the baffle plate 37 is vertically aligned with the filter screen 26, and the two ends of the support cross frame 29 are in contact with the inner sides of the support shell 24.

[0049] When implementing this embodiment, the air outlet of the evaporator 1 is located at the front end of the interior of the arc half-height cabinet 3, so that the cold air can spread along the interior of the arc half-height cabinet 3, so that the cold air can contact the objects. At the same time, an air pump is installed inside the absorption chamber 7, so that the absorption chamber 7 can absorb the cold air discharged from the interior of the arc half-height cabinet 3. At the same time, the second connecting pipe 9 is interconnected with the absorption chamber 7, and the second connecting pipe 9 is connected with the supporting shell 24, and the cold air can enter the interior of the supporting shell 24. When the cold air enters the interior of the supporting shell 24, the cold air enters the first connecting pipe 8 through the filter 26. The first connecting pipe 8 is interconnected with the evaporator 1, so that the cold air can flow back to the interior of the evaporator 1. The impurities in the gas can be isolated by the setting of the filter 26. At this time, the impurities will remain in the filter. 26, thereby preventing impurities from flowing into the interior of the conveying pipe 5. When a certain amount of impurities accumulate on the surface of the filter screen 26, the driving motor 23 can be started to drive the screw rod 30 to rotate. When the screw rod 30 rotates, it can drive the supporting cross frame 29 to move downward, and when the supporting cross frame 29 moves downward, it drives the nylon brush handle 25 to move downward. The surface of the nylon brush handle 25 fits the rear end surface of the filter screen 26, so that when the nylon brush handle 25 moves downward, the impurities attached to the surface of the filter screen 26 can be swept away. At the same time, when the supporting cross frame 29 moves downward, it can also drive the limiting guide rod 28 to move downward until it contacts with the contact guide rod 22. The bottom end of the limiting guide rod 28 is inclined at 45°, which facilitates the contact between the limiting guide rod 28 and the contact guide rod 22. When the limit guide rod 28 contacts the contact guide rod 22, the contact guide rod 22 can be squeezed to move toward the rear end. When the contact guide rod 22 moves toward the rear end, the connecting top frame 21 and the contact guide rod 22 can be driven to move toward the rear end at the same time, so that the blocking bottom plate 14 can move toward the rear end, so that the inner front end of the open groove 15 can move to align with the rear end bottom of the filter screen 26, and the fallen impurities can pass through the open groove 15 and fall into the interior of the collecting chamber 16, so as to avoid the impurities being retained on the blocking bottom plate 14. In addition, when the supporting cross frame 29 moves downward, it can also drive the rack 27 to pass through the gear 31, so that the gear 31 can drive the winding wheel 32 to rotate. When the winding wheel 32 rotates, the baffle plate 37 can be pulled to move toward the rear end through the connecting rope 34, so that the baffle plate 37 can align with the filter screen 26. When the baffle plate 37 is disengaged and moves to the rear end, the second spring 36 can be pressed to compress the second spring 36. At the same time, a plug rod is installed through the rear end of the baffle plate 37, and the plug rod is located at the inner circle center of the second spring 36, so that the second spring 36 can be prevented from bending and deforming. Subsequently, when the rack 27 passes through the gear 31, the gear 31 will lose the meshing force. At this time, the elasticity of the second spring 36 will drive the baffle plate 37 to move quickly to the front end until the baffle plate 37 hits the frame of the filter screen 26, so that the filter screen 26 can be shocked to shake off the remaining impurities, completing the cleaning of the surface of the filter screen 26. When the nylon brush handle 25 is reset, the rack 27 can be driven to pass through the gear 31 again, so that the baffle plate 37 can hit the filter screen 26 again.Improve the cleaning effect of the filter screen 26 surface, and when the support cross frame 29 moves upward to the limit position, the limit guide rod 28 can be out of contact with the contact guide rod 22. At this time, the contact guide rod 22 will lose its limit, and the elasticity of the first spring 17 will drive the blocking bottom plate 14 to move and reset, so that the open groove 15 can move to be vertically aligned with the bottom end of the filter screen 26, preventing cold air from entering the interior of the collection chamber 16, and completing the work.

[0050] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An evaporator for a circular arc half-height cabinet, comprising a circular arc half-height cabinet (3), an evaporator (1) being fixedly installed inside the circular arc half-height cabinet (3), and an inflation chamber (2) being fixedly installed at the front end of the evaporator (1), characterized in that: The evaporator (1) comprises fins (4) and delivery pipes (5), wherein the delivery pipes (5) are fixedly installed inside the fins (4) at equal intervals.

2. The evaporator for a circular arc half-height cabinet according to claim 1, characterized in that: The arc half-height cabinet (3) further comprises a circulation system (6), wherein the circulation system (6) is fixedly mounted at the top rear end of the arc half-height cabinet (3), wherein the circulation system (6) comprises an absorption chamber (7), a first connecting pipe (8), a second connecting pipe (9) and a transmission component (10), wherein the second connecting pipe (9) is symmetrically fixedly mounted at the rear end of the absorption chamber (7), the transmission component (10) is fixedly mounted at the bottom end of the second connecting pipe (9), and the first connecting pipe (8) is fixedly mounted at the front bottom of the transmission component (10).

3. The evaporator for a circular arc half-height cabinet according to claim 2, characterized in that: The transmission component (10) comprises a protective rear plate (11), a receiving device (12) and a supporting device (13); the protective rear plate (11) is fixedly mounted on the rear end of the supporting device (13); and the receiving device (12) is fixedly mounted on the bottom end of the supporting device (13).

4. The evaporator for a circular arc half-height cabinet according to claim 3 is characterized in that: The receiving device (12) comprises a blocking bottom plate (14), an open groove (15), a collecting cavity (16), a first spring (17), a supporting back plate (18), a positioning cavity (19), a displacement key (20), a connecting top frame (21) and a contact guide rod (22); the positioning cavity (19) is fixedly mounted on the top of the rear end of the collecting cavity (16); the supporting back plate (18) is fixedly mounted on the inner rear end of the positioning cavity (19); the first spring (17) is fixedly mounted on the front end of the supporting back plate (18) at an equal distance; the displacement key (20) is fixedly mounted on the front end of the first spring (17); the blocking bottom plate (14) slides through the positioning cavity (19) and is connected to the front end of the displacement key (20); the open groove (15) is symmetrically arranged on the inner front end of the blocking bottom plate (14); the connecting top frame (21) is symmetrically fixedly mounted on the top end of the displacement key (20); and the contact guide rod (22) is fixedly mounted on the front end top of the connecting top frame (21).

5. The evaporator for a circular arc half-height cabinet according to claim 4, characterized in that: The support device (13) comprises a driving motor (23), a supporting shell (24), a nylon brush handle (25), a filter screen (26), a rack (27), a limiting guide rod (28), a supporting cross frame (29), a screw rod (30), a gear (31), a winding wheel (32), a guide wheel (33), a connecting rope (34), a connecting rear plate (35), a second spring (36), a baffle plate (37) and a connecting vertical frame (38), wherein the driving motor (23) is fixedly mounted on the top of the supporting shell (24), the screw rod (30) is fixedly mounted on the bottom center of the driving motor (23), the supporting cross frame (29) is threadedly sleeved on the outer ring of the screw rod (30), the connecting vertical frame (38) is fixedly mounted on the four corners of the bottom end of the supporting cross frame (29), the limiting guide rod (28) is fixedly mounted on the rear end of the connecting vertical frame (38), and the rack (27) is fixedly mounted on the connecting vertical frame (3 8) is close to the side end of the supporting shell (24), the filter screen (26) is symmetrically slidably inserted into the inner bottom end of the supporting shell (24), the winding wheel (32) is rotatably mounted on both sides of the inner part of the supporting shell (24), the wire wheel (33) is symmetrically rotatably mounted on both sides of the inner part of the supporting shell (24), and the wire wheel (33) is located behind the winding wheel (32), the connecting rear plate (35) is fixedly mounted on both sides of the inner part of the supporting shell (24), and the connecting rear plate (35) is located below the wire wheel (33), the second spring (36) is fixedly mounted on the front end of the connecting rear plate (35), the baffle plate (37) is fixedly mounted on the front end of the second spring (36), the gear (31) is fixedly mounted on the center of the side end of the winding wheel (32) away from the supporting shell (24), and the connecting rope (34) is fixedly mounted between the winding wheel (32) and the baffle plate (37).

6. The evaporator for a circular arc half-height cabinet according to claim 5, characterized in that: The absorption chamber (7) is fixedly mounted at the top rear end of the arc half-height cabinet (3); the first connecting pipe (8) is connected to the front bottom of the supporting shell (24); the second connecting pipe (9) is connected to the side top of the supporting shell (24); the collecting chamber (16) is fixedly mounted at the bottom end of the supporting shell (24); and the protective rear plate (11) is fixedly mounted at the rear end of the supporting shell (24).

7. The evaporator for a circular arc half-height cabinet according to claim 6, characterized in that: The width of the open groove (15) is consistent with the thickness of the filter screen (26), the front end surface of the contact guide rod (22) is arranged in an arc state, the top of the positioning cavity (19) is symmetrically provided with movable grooves, and the interior of the collection cavity (16) is arranged in a hollow state.

8. The evaporator for a circular arc half-height cabinet according to claim 7, characterized in that: The top of the side end and the bottom of the front end of the support shell (24) are both provided with circular holes, the bottom of the rear end of the limiting guide rod (28) is inclined at 45 degrees, and the rear end surface of the rack (27) is vertically aligned with the front end surface of the gear (31).

9. The evaporator for a circular arc half-height cabinet according to claim 8, characterized in that: A plug rod is fixedly mounted at the rear end of the baffle plate (37), and the plug rod is located at the center of the inner circle of the second spring (36). The spacing between the two racks (27) is greater than the length of the nylon brush handle (25), and the front end surface of the nylon brush handle (25) is flush with the rear end surface of the filter screen (26).

10. The evaporator for a circular arc half-height cabinet according to claim 9, characterized in that: The limiting guide rod (28) is vertically aligned with the contact guide rod (22); a plug hole is provided at the bottom of the side end of the support shell (24), and the filter screen (26) is located inside the plug hole; the baffle plate (37) is vertically aligned with the filter screen (26); and the two ends of the support cross frame (29) are in contact with the inner sides of the support shell (24).

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