Volume-variable refrigeration equipment

Abstract

The invention relates to the field of refrigeration equipment.The variable-capacity refrigeration equipment comprises a box body with the top open, an air cooling assembly is arranged in the wall of the box body, the variable-capacity refrigeration equipment further comprises a vertically-through expansion frame body, a box cover is installed on a top opening of the expansion frame body, an inner frame is arranged on the inner side of the expansion frame body, and an embedding groove with the bottom open is formed between the inner frame and the expansion frame body; the top of the box body is inserted into the caulking groove, so that the box body and the interior of the capacity expansion frame body form a containing space, and the capacity expansion frame body and the box body can slide in a push-pull mode so as to be used for adjusting the size of the containing space, the containing space for storing articles is formed by the capacity expansion frame body and the box body, and the capacity expansion frame body and the box body are connected in a sliding and inserting mode; the containing space can be conveniently adjusted to be matched with the quantity of stored articles by matching with clamping connection or separation of clamping connection between the clamping piece and the tooth surface of the concave groove, so that the containing space does not generate a large idle space, the energy consumption is reduced, the space utilization rate is improved, and the use flexibility of the equipment is improved due to the changeable size.

Description

Technical Field

[0001] The present invention relates to the field of refrigeration equipment, and in particular to a variable capacity refrigeration equipment. Background Art

[0002] Mobile refrigeration equipment is gradually playing an important role in people's travel lives. For example, car refrigerators and outdoor refrigerators are used by more and more people who travel outdoors, providing an environment for mobile refrigeration of food, medicine and other daily necessities for outdoor travel. The small size is an important feature of the portability of mobile refrigeration equipment, but it also means that the storage space for such refrigeration equipment is extremely limited.

[0003] The refrigeration space of current mobile refrigeration equipment is basically fixed, and the size of the refrigeration space cannot be flexibly adjusted according to the amount of stored items. If a small amount of items is placed, there will be excess refrigeration space left idle, which increases energy consumption and affects the standby time of the equipment. The idle refrigeration space also makes the volume of the equipment need to be compressed. In addition, fixed refrigeration space is difficult to meet the storage needs of excess items. Summary of the invention

[0004] In order to make up for the deficiencies of the existing technical problems, the purpose of the present invention is to provide a variable-capacity refrigeration equipment to solve the problem that the refrigeration space of traditional mobile refrigeration equipment is fixed and the storage space cannot be flexibly adjusted according to the amount of stored items, resulting in low energy utilization and low space utilization of the equipment.

[0005] In order to solve the problems of the prior art, the technical solution of the present invention is as follows: A variable-capacity refrigeration device comprises a box body with an open top, an air-cooling component is arranged in the wall of the box body, and also comprises an expansion frame body which passes through from top to bottom, a box cover is installed on the top opening of the expansion frame body, an inner frame is provided on the inner side of the expansion frame body, and a groove with an open bottom is formed between the inner frame and the expansion frame body, the top of the box body is inserted in the groove, so that the box body and the interior of the expansion frame body form a accommodating space, the expansion frame body and the box body can be pushed, pulled and slidable to adjust the volume of the accommodating space, the outer wall of the box body has a vertically extending recessed groove, the edge surface of the recessed groove is a toothed surface, the inner wall of the expansion frame body is provided with a clamping piece, the clamping piece is clamped with the toothed surface of the recessed groove to lock the position of the expansion frame and the box body.

[0006] Preferably, the clamping member includes two tooth plates arranged on the inner wall of the expansion frame, the two tooth plates can expand and rotate in a V shape, and a spring plate is connected between the two tooth plates to push the tooth plates to expand and engage the tooth surfaces of the recessed grooves. A pulling member is provided on the inner wall of the expansion frame, and the pulling member moves upward to pull the two tooth plates together to release the engagement.

[0007] Preferably, the pulling member includes a pulling handle which is vertically inserted into the inner side of the expansion frame from the top of the expansion frame. Two connecting plates distributed in an eight-character shape are symmetrically rotated at the bottom end of the pulling handle, and the connecting plates are rotatably connected to the toothed plate.

[0008] Preferably, the pulling member includes a steel wire. Guide wheels are symmetrically and rotatably installed in the wall of the expansion frame. The steel wire is conducted downward from the top of the expansion frame. The steel wire bypasses the guide wheels and is connected to the toothed plate, and the top end of the steel wire is connected to a handle.

[0009] Preferably, a retaining post is fixed to the inner wall of the expansion frame, and the retaining post is used to limit the maximum expansion amplitude of the toothed plate.

[0010] Preferably, the air-cooling component includes a semiconductor refrigeration sheet. A driving cavity is provided at the bottom of the box body. The semiconductor refrigeration sheet is arranged in the driving cavity. An air supply channel and a return air channel are respectively arranged in the two side walls of the box body. The air supply channel and the return air channel communicate with the driving cavity. The air supply channel penetrates through the inside of the box body through an air supply port, and the return air channel penetrates through the inside of the box body through a return air port. A guiding fan is arranged in the driving cavity, and the guiding fan is used to conduct gas to the air supply channel.

[0011] Preferably, a plurality of air supply ports penetrating the air supply channel are vertically arranged on the inner wall of the box body. A plurality of return air ports penetrating the embedding grooves are vertically arranged on the surface of the inner frame. The return air channel extends to the top of the box body and communicates with the embedding grooves. The arrangement pitch of the air supply ports is the same as that of the return air ports. When the surface of the inner frame slides to the lowest position, only one air supply port and one return air port conduct gas.

[0012] Preferably, the top side of the guiding fan is rotatably connected to the driving cavity, the bottom of the guiding fan is swingable, and a pressure sensor is arranged in the driving cavity. The pressure sensor abuts against the bottom of the guiding fan in the direction of the air supply channel.

[0013] Preferably, vertical scale marks are arranged on the outer surface of the box body, a protrusion is fixed to the inner wall of the box body, and a vertically extending limiting groove is formed on the surface of the inner frame. The protrusion is slidably inserted into the limiting groove.

[0014] Compared with the prior art, the advantages of the present invention are as follows: 1. In the present invention, an accommodation space for storing items is formed by the expansion frame and the box body. The expansion frame and the box body are connected in a sliding plug-in manner, and are cooperated with the toothed surface of the clamping member and the concave groove to be clamped or disengaged, so that the accommodation space can be conveniently adjusted to adapt to the amount of stored items, so that there will be no large idle space in the accommodation space, reducing energy consumption and improving space utilization rate, and the variable volume improves the flexibility of equipment use.

[0015] 2. While adjusting the accommodation space, the present invention adaptively adjusts the circulating air volume. By the reaction force exerted on the pressure sensor by the swing-mounted diversion fan, the air volume is autonomously adjusted, so that the refrigeration intensity changes adaptively with the quantity of items, reducing energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 One of the overall structural schematic diagrams of the present invention.

[0017] Figure 2 Another overall structural schematic diagram of the present invention.

[0018] Figure 3 Schematic diagram of the box structure of the present invention.

[0019] Figure 4 Schematic diagram of the expansion frame structure of the present invention.

[0020] Figure 5 Overall cross-sectional schematic diagram of the present invention.

[0021] Figure 6 For the present invention Figure 5 Enlarged view of part A.

[0022] Figure 7 One of the schematic diagrams of the clamping member structure of the present invention.

[0023] Figure 8 Another schematic diagram of the clamping member structure of the present invention.

[0024] Reference numerals: 1. Box; 11. Concave groove; 12. Return air channel; 13. Driving cavity; 14. Air delivery channel; 15. Air delivery port; 2. Expansion frame; 21. Inner frame; 22. Embedded groove; 23. Return air port; 3. Protrusion; 31. Limit groove; 4. Temperature sensor; 5. Semiconductor refrigeration sheet; 51. Heat dissipation fan; 6. Diversion fan; 61. Pressure sensor; 7. Scale mark; 8. Box cover; 9. Clamping member; 91. Pull handle; 92. Tooth plate; 93. Connecting plate; 94. Elastic piece; 95. Stopper; 96. Steel wire; 97. Guide wheel; 98. Handle. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0026] The refrigeration equipment has two parts: a space adjustment part and an air-cooling component.

[0027] The structure of the space adjustment part is as follows: As Figures 1-5As shown, the outer shape and inner cavity of the box body 1 are both cube-shaped. The top of the box body 1 is open. The expansion frame body 2 is also cube-shaped, and both the top and bottom of the expansion frame body 2 are open. A box cover 8 is installed at the top opening of the expansion frame body 2. The inner frame 21 is integrally fixed inside the expansion frame body 2. A slot 22 is formed between the inner frame 21 and the expansion frame body 2. The top of the inner frame 21 is connected to the top of the expansion frame body 2 to seal the top of the slot 22, and the bottom of the slot 22 is open. The expansion frame body 2 is placed above the box body 1, and the top opening of the box body 1 is slidably inserted into the slot 22 in a fitting manner, so that the inner wall of the expansion frame body 2 slides and fits against the outer wall of the box body 1, and the outer wall of the inner frame 21 slides and fits against the inner wall of the box body 1, so that the interior of the box body 1 and the expansion frame body 2 form a receiving space.

[0028] As Figure 3 , Figure 4 , Figure 7 shown, recessed grooves 11 are symmetrically formed on the left and right sides of the box body 1, and the recessed grooves 11 extend vertically to the top of the box body 1. The edge surface of the recessed groove 11 is a toothed surface. Clamping members 9 are provided on the inner walls of the left and right sides of the expansion frame body 2. The clamping member 9 includes two toothed plates 92, and the two toothed plates 92 are distributed in a V shape. The converging ends of the two toothed plates 92 are rotatably connected to the inner wall of the expansion frame body 2. A spring piece 94 is connected at the V-shaped angle position of the two toothed plates 92. The spring piece 94 applies an expanding elastic force to the two toothed plates 92, so that the toothed plates 92 can be clamped with the toothed surface of the recessed groove 11. A stop post 95 is fixed on the inner wall of the expansion frame body 2, and the stop post 95 abuts against the outer edge of the toothed plate 92 to limit the maximum expansion amplitude of the toothed plate 92.

[0029] Example 1: As Figure 7 shown, the pulling member includes a pull handle 91. The pull handle 91 is vertically inserted into the inside of the expansion frame body 2 from the top of the expansion frame body 2. Two connecting plates 93 distributed in an eight-character shape are symmetrically rotated at the bottom end of the pull handle 91. The two connecting plates 93 are respectively rotatably connected to the middle parts of the two toothed plates 92. The top of the pull handle 91 is bent to form a holding part.

[0030] Open the box cover 8 and place the items in the receiving space formed by the box body 1 and the expansion frame body 2, and then close the box cover 8 for refrigeration. Pull up the pull handle 91 by holding the holding part at the top of the pull handle 91, so that the connecting plates 93 pull the two toothed plates 92 to overcome the elastic force and close up. The toothed plates 92 are disengaged from the toothed surface of the recessed groove 11. Then, slide the expansion frame body 2 up or down as appropriate to adjust the volume of the receiving space to fit the items contained inside. Then release the pull handle 91. Through the elastic force of the spring piece 94, the two toothed plates 92 expand and rotate, and the toothed plates 92 are re-clamped with the toothed surface of the recessed groove 11, re-locking the positions of the box body 1 and the expansion frame body 2 to fix the receiving space.

[0031] When lifting the refrigeration equipment, the box body 1 bears the weight of the internal items, causing the tooth surface of the recessed groove 11 to exert a downward pulling force on the tooth plate 92, making the tooth plate 92 tend to expand. By blocking the expansion of the tooth plate 92 with the blocking post 95, the tooth plate 92 is stably clamped with the tooth surface of the recessed groove 11, keeping the position of the expansion frame body 2 and the box body 1 stably locked.

[0032] Vertical distribution scale marks 7 are arranged on the outer surface of the box body 1. When sliding the expansion frame body 2 to adjust the size of the accommodation space, by aligning the expansion frame body 2 with different positions of the scale marks 7, the volume of the accommodation space can be intuitively displayed.

[0033] As Figure 5 shown, a cylindrical protrusion 3 is fixed at the upper part of the inner wall of the box body 1, and a vertically extending limiting groove 31 is opened on the surface of the inner frame 21. The protrusion 3 is slidably inserted into the limiting groove 31. By blocking the limiting groove 31 with the protrusion 3, the expansion frame body 2 is prevented from moving upwards excessively and detaching from the box body 1.

[0034] The partial structure of the air-cooling component is as follows: As Figure 2 、 Figure 5 、 Figure 6 shown, a driving cavity 13 is opened at the position near the front of the bottom of the box body 1. The lateral cross-section of the driving cavity 13 is in the shape of a right triangle. The semiconductor refrigeration sheet 5 is vertically installed in the driving cavity 13, and the semiconductor refrigeration sheet 5 is attached to the edge of the driving cavity 13. The refrigerating surface of the semiconductor refrigeration sheet 5 is exposed in the driving cavity 13, and the high-temperature surface of the semiconductor refrigeration sheet 5 faces outwards. A heat dissipation fan 51 is provided to dissipate heat from the semiconductor refrigeration sheet 5. A controller for controlling the semiconductor refrigeration sheet 5 and an energy storage battery for providing electric energy are installed at the bottom of the box body 1. A temperature sensor 4 is installed inside the box body 1, and the temperature sensor 4 is connected to the controller.

[0035] An air return channel 12 is opened in the front wall of the box body 1. The bottom of the air return channel 12 penetrates through the driving cavity 13, and the top of the air return channel 12 extends to the top of the box body 1 and communicates with the embedding groove 22. An air return port 23 is opened on the surface of the inner frame 21; An air supply channel 14 is opened in the rear wall of the box body 1. The air supply channel 14 extends through the bottom wall of the box body 1 and then communicates with the driving cavity 13. An air supply port 15 communicating with the air supply channel 14 is opened on the inner wall of the box body 1. The diversion fan 6 is installed in the driving cavity 13; When cooling the accommodation space, turn on the thermoelectric cooler 5 and the diversion fan 6. The diversion fan 6 conducts air flow into the air delivery channel 14, causing the air flow to be introduced into the accommodation space through the air delivery port 15. The air in the accommodation space enters the air return channel 12 through the air return port 23 and is guided back to the drive chamber 13, forming a circulating air flow. The air flow is cooled by the thermoelectric cooler 5 inside the drive chamber 13, and the cooled air flow circulates into the accommodation space to form a low-temperature environment for storing items. The temperature in the accommodation space is monitored by the temperature sensor 4.

[0036] When adjusting the size of the accommodation space, it is necessary to adapt and adjust the cooling intensity. The operation is as follows: As Figure 5 , Figure 6 shown, there are several air delivery ports 15 on the inner wall of the box body 1, and the air delivery ports 15 are vertically arranged at equal intervals. There are several air return ports 23 on the surface of the inner frame 21, and the air return ports 23 are vertically arranged at equal intervals. Moreover, the arrangement interval of the air delivery ports 15 is the same as that of the air return ports 23. The top side of the diversion fan 6 is rotatably connected to the drive chamber 13, enabling the bottom of the diversion fan 6 to swing. A pressure sensor 61 is installed in the drive chamber 13. The pressure sensor 61 is connected to the controller, and the pressure sensor 61 abuts against the bottom of the diversion fan 6 in the direction of the air delivery channel 14.

[0037] When the expansion frame 2 and the box body 1 are in the maximum contraction state, the inner frame 21 blocks the air delivery ports 15, leaving only one air delivery port 15 open. The inner wall of the box body 1 blocks the air return ports 23, leaving only one air return port 23 open, ensuring that the cold air can circulate and conduct. When the expansion frame 2 is slid upward to expand the accommodation space, the number of opened air delivery ports 15 and air return ports 23 gradually increases, and the number of opened air delivery ports 15 and air return ports 23 is the same, thereby ensuring that the larger the accommodation space, the larger the opened cold air circulation channel, and the smaller the accommodation space, the smaller the opened cold air circulation channel; The diversion fan 6 is used to conduct air flow into the air delivery channel 14, increasing the air pressure in the air delivery channel 14. The reaction thrust generated when the diversion fan 6 drives the air flow is transmitted to the pressure sensor 61. By setting the standard pressure range of the pressure sensor 61 through the controller, when the pressure sensor 61 monitors that the reaction force of the diversion fan 6 is less than this standard pressure range, the controller increases the rotation speed of the diversion fan 6. When the pressure sensor 61 monitors that the reaction force of the diversion fan 6 is greater than this standard pressure range, the controller decreases the rotation speed of the diversion fan 6, so that the reaction force of the diversion fan 6 is maintained within the standard pressure range; As the accommodating space expands and increases, the number of opened air outlets 15 increases, reducing the air resistance and pressure in the air delivery channel 14, thereby reducing the reaction force of the diversion fan 6. At this time, the pressure is fed back through the pressure sensor 61, and the controller increases the rotation speed of the diversion fan 6 to increase the circulating air flow to meet the refrigeration requirements for more items. On the contrary, when the number of opened air outlets 15 decreases, the air resistance and pressure in the air delivery channel 14 increase, thereby increasing the reaction force of the diversion fan 6. At this time, the pressure is fed back through the pressure sensor 61, and the controller reduces the rotation speed of the diversion fan 6 to reduce the energy consumption.

[0038] Embodiment 2: The difference from Embodiment 1 lies in the structure of the pulling member, as Figure 8 shown. The pulling member includes a steel wire 96. Guide wheels 97 are symmetrically and rotatably installed inside the wall of the expansion frame 2. The steel wire 96 is conducted downward from the top of the expansion frame 2. The steel wire 96 bypasses the guide wheels 97 and is connected to the toothed plate 92. The top end of the steel wire 96 is connected to a handle 98. Hold the handle 98 and pull the steel wire 96 upward to make the steel wire 96 pull the two toothed plates 92 to close, releasing the engagement between the toothed plate 92 and the tooth surface of the concave groove 11.

[0039] Although the embodiments of the present invention 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 principles and spirit of the present invention.

Claims

1. A variable capacity refrigeration device, comprising: A box body (1) with an open top, an air cooling assembly arranged in the wall of the box body (1), characterized in that it also includes an expansion frame body (2) that penetrates from top to bottom, a box cover (8) is installed at the top of the expansion frame body (2), an inner frame (21) is provided on the inner side of the expansion frame body (2), a groove (22) with an open bottom is formed between the inner frame (21) and the expansion frame body (2), the top of the box body (1) is inserted into the groove (22), so that the box body (1) and the expansion frame body are connected. The interior of the body (2) forms a storage space, and the expansion frame (2) and the box body (1) can be pushed, pulled and slidable to adjust the volume of the storage space. The outer wall of the box body (1) has a vertically extending recessed groove (11), and the edge surface of the recessed groove (11) is a toothed surface. The inner wall of the expansion frame (2) is provided with a clamping piece (9), and the clamping piece (9) is clamped with the toothed surface of the recessed groove (11) to lock the position of the expansion frame (2) and the box body (1).

2. The variable capacity refrigeration equipment according to claim 1, characterized in that: The clamping member (9) comprises two tooth plates (92) arranged on the inner wall of the expansion frame (2), the two tooth plates (92) can be expanded and rotated in a V shape, a spring sheet (94) is connected between the two tooth plates (92) and is used to push the tooth plates (92) to expand and engage the tooth surfaces of the recessed groove (11), and a pulling member is arranged on the inner wall of the expansion frame (2), and the pulling member moves upward to pull the two tooth plates (92) together to release the engagement.

3. The variable capacity refrigeration equipment according to claim 2, characterized in that: The pulling member comprises a pull handle (91), which is vertically slidably inserted from the top of the expansion frame (2) to the inner side of the expansion frame (2), and the bottom end of the pull handle (91) symmetrically rotates two connecting plates (93) arranged in an "eight" shape, and the connecting plates (93) are rotatably connected to the toothed plates (92).

4. The variable capacity refrigeration equipment according to claim 2, characterized in that: The pulling member comprises a steel wire (96), a guide wheel (97) symmetrically rotatably mounted in the wall of the expansion frame (2), the steel wire (96) being conducted downward from the top of the expansion frame (2), the steel wire (96) passing around the guide wheel (97) to connect to the toothed plate (92), and the top end of the steel wire (96) being connected to a handle (98).

5. The variable capacity refrigeration equipment according to claim 2, characterized in that: A stop column (95) is fixed to the inner wall of the expansion frame (2), and the stop column (95) is used to limit the maximum expansion range of the tooth plate (92).

6. The variable capacity refrigeration equipment according to claim 1, characterized in that: The air cooling component comprises a semiconductor cooling plate (5). The bottom of the box (1) has a driving cavity (13). The semiconductor cooling plate (5) is arranged in the driving cavity (13). The two side walls of the box (1) are respectively provided with an air supply channel (14) and an air return channel (12). The air supply channel (14) and the air return channel (12) are connected to the driving cavity (13). The air supply channel (14) passes through the interior of the box (1) through the air supply port (15). The air return channel (12) passes through the interior of the box (1) through the air return port (23). A guide fan (6) is arranged in the driving cavity (13). The guide fan (6) is used to conduct gas to the air supply channel (14).

7. The variable capacity refrigeration equipment according to claim 6, characterized in that: A plurality of gas delivery ports (15) penetrating the gas delivery channel (14) are arranged vertically on the inner wall of the box body (1), and a plurality of gas return ports (23) penetrating the embedded groove (22) are arranged vertically on the surface of the inner frame (21). The gas return channel (12) extends to the top of the box body (1) and penetrates the embedded groove (22). The arrangement spacing of the gas delivery ports (15) is the same as the arrangement spacing of the gas return ports (23). When the surface of the inner frame (21) slides to the lowest position, only one gas delivery port (15) and one gas return port (23) conduct gas.

8. The variable capacity refrigeration equipment according to claim 7, characterized in that: The top of the side of the guide fan (6) is rotatably connected to the driving chamber (13), the bottom of the guide fan (6) is swingable, and a pressure sensor (61) is arranged in the driving chamber (13), and the pressure sensor (61) contacts the bottom of the guide fan (6) in the direction of the gas delivery channel (14).

9. The variable capacity refrigeration equipment according to claim 1, characterized in that: The outer surface of the box body (1) is provided with vertically distributed scale marks (7).

10. The variable capacity refrigeration equipment according to claim 1, characterized in that: A protrusion (3) is fixed on the inner wall of the box body (1), and a surface of the inner frame (21) has a vertically extending limiting groove (31), and the protrusion (3) is slidably inserted into the limiting groove (31).

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