A variable capacity refrigeration equipment

Abstract

The present invention discloses a variable-capacity refrigeration device, which relates to the field of refrigeration equipment. It includes a box body with an open top, an air-cooling component is arranged in the wall of the box body, and an expansion frame body that passes through from top to bottom. The top of the expansion frame is equipped with a box cover, and the inner side of the expansion frame is provided with an inner frame. 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 into the groove, so that the box body and the interior of the expansion frame form a storage space, and the expansion frame and the box body can be pushed and pulled and slid to adjust the volume of the storage space. The present invention forms a storage space for storing items through the expansion frame and the box body. The expansion frame and the box body are connected in a sliding plug-in manner, and the clamping piece is engaged or disengaged with the tooth surface of the recessed groove. The storage space can be conveniently adjusted to adapt to the amount of stored items, so that the storage space does not generate a large idle space, thereby reducing energy consumption and improving space utilization. In addition, the variable volume improves the flexibility of equipment use.

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 mobile refrigeration equipment that makes it portable, 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 items stored. If a small amount of items is placed, there will be excess refrigeration space left idle. The idle refrigeration space 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, the 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 solutions of the present invention are as follows:

[0006] A variable-capacity refrigeration device includes a box body with an open top, an air-cooling component is arranged in the wall of the box body, and an expansion frame that passes through from top to bottom. The top of the expansion frame is installed with a box cover, and the inner side of the expansion frame is provided with an inner frame. A groove with an open bottom is formed between the inner frame and the expansion frame. The top of the box body is inserted into the groove so that the box body and the interior of the expansion frame form a accommodating space. The expansion frame and the box body can be pushed, pulled and slid to adjust the volume of the accommodating space. The outer wall of the box body has a vertically extending recessed groove, and the edge surface of the recessed groove is a toothed surface. The inner wall of the expansion frame is provided with a clamping piece, which is engaged with the toothed surface of the recessed groove to lock the position of the expansion frame and the box body.

[0007] 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 groove. 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.

[0008] Preferably, the pulling member includes a pull handle, which is vertically slid from the top of the expansion frame to the inner side of the expansion frame, and the bottom end of the pull handle symmetrically rotates two connecting plates distributed in an eight-shaped pattern, and the connecting plates rotate to connect the tooth plates.

[0009] Preferably, the pulling member includes a steel wire, and a guide wheel is symmetrically installed in the wall of the expansion frame. The steel wire is transmitted downward from the top of the expansion frame, passes around the guide wheel and connects to the tooth plate, and the top of the steel wire is connected to the handle.

[0010] Preferably, a stop column is fixed to the inner wall of the expansion frame, and the stop column is used to limit the maximum expansion range of the tooth plate.

[0011] Preferably, the air cooling component includes a semiconductor refrigeration plate, the bottom of the box body has a driving cavity, the semiconductor refrigeration plate is arranged in the driving cavity, and the two side walls of the box body are respectively provided with an air supply channel and an air return channel, the air supply channel and the air return channel are connected to the driving cavity, the air supply channel passes through the interior of the box body through the air supply port, and the air return channel passes through the interior of the box body through the air return port. A guide fan is provided in the driving cavity, and the guide fan is used to conduct gas to the air supply channel.

[0012] Preferably, a plurality of gas delivery ports penetrating the gas delivery channel are vertically arranged on the inner wall of the box, and a plurality of gas return ports penetrating the embedded groove are vertically arranged on the surface of the inner frame. The return air channel extends to the top of the box and penetrates the embedded groove. The arrangement spacing of the gas delivery ports is the same as the arrangement spacing of the gas return ports. When the inner frame surface slides to the lowest position, only one gas delivery port and one gas return port conduct gas.

[0013] Preferably, the top side of the guide fan is rotatably connected to the drive chamber, the bottom of the guide fan is swingable, a pressure sensor is provided in the drive chamber, and the pressure sensor contacts the bottom of the guide fan in the direction of the air transmission channel.

[0014] Preferably, the outer surface of the box body is provided with vertically distributed scale marks, the inner wall of the box body is fixed with a protrusion, and the surface of the inner frame has a vertically extending limiting groove, and the protrusion is slidably inserted into the limiting groove.

[0015] Compared with the prior art, the advantages of the present invention are as follows:

[0016] 1. The present invention forms a storage space for storing items by expanding the frame and the box. The expansion frame and the box are connected in a sliding plug-in manner, and the clamping member is engaged or disengaged with the tooth surface of the recessed groove. The storage space can be conveniently adjusted to adapt to the amount of stored items, so that the storage space does not produce a large idle space, thereby reducing energy consumption and improving space utilization. In addition, the variable volume improves the flexibility of equipment use.

[0017] 2. The present invention adaptively adjusts the circulating air volume while adjusting the accommodation space. The reaction force exerted by the swing-mounted guide fan on the pressure sensor is used to autonomously adjust the air volume, so that the refrigeration intensity changes adaptively with the amount of goods, thereby reducing energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is one of the overall structural diagrams of the present invention.

[0019] Figure 2 This is the second schematic diagram of the overall structure of the present invention.

[0020] Figure 3 It is a schematic diagram of the box structure of the present invention.

[0021] Figure 4 It is a schematic diagram of the expansion frame structure of the present invention.

[0022] Figure 5 It is an overall cross-sectional schematic diagram of the present invention.

[0023] Figure 6 For the present invention Figure 5 Enlarged view of point A.

[0024] Figure 7 This is one of the schematic diagrams of the clamping structure of the present invention.

[0025] Figure 8 This is the second schematic diagram of the clamping structure of the present invention.

[0026] Figure markings: 1. Box body; 11. Recessed groove; 12. Return air channel; 13. Drive chamber; 14. Air delivery channel; 15. Air delivery port; 2. Expansion frame; 21. Inner frame; 22. Embedded groove; 23. Return air port; 3. Protrusion; 31. Limiting groove; 4. Temperature sensor; 5. Semiconductor refrigeration plate; 51. Cooling fan; 6. Guide fan; 61. Pressure sensor; 7. Scale mark; 8. Box cover; 9. Clamp; 91. Pull handle; 92. Tooth plate; 93. Connecting plate; 94. Spring clip; 95. Stop column; 96. Steel wire; 97. Guide wheel; 98. Handle. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] Refrigeration equipment has two parts: space conditioning and air cooling components.

[0029] The structure of the space adjustment part is as follows:

[0030] like Figure 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, and the expansion frame body 2 is also cube-shaped, and the top and bottom of the expansion frame body 2 are open. A box cover 8 is installed at the top of the expansion frame body 2, and an inner frame 21 is fixed integrally to the inner side of the expansion frame body 2, and a groove 22 is formed between the inner frame 21 and the expansion frame body 2. The inner frame 21 is connected to the top of the expansion frame body 2 so that the top of the groove 22 is sealed, and the bottom of the groove 22 is open. The expansion frame body 2 is placed above the box body 1, and the top of the box body 1 is adapted to be slidably inserted into the groove 22, so that the inner wall of the expansion frame body 2 slides and fits the outer wall of the box body 1, and the outer wall of the inner frame 21 slides and fits the inner wall of the box body 1, so that the box body 1 and the expansion frame body 2 form a accommodating space.

[0031] like Figure 3 、 Figure 4 、 Figure 7 As shown, recessed grooves 11 are symmetrically provided 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 tooth surface. A clamping member 9 is provided on the inner walls of the left and right sides of the expansion frame 2. The clamping member 9 includes two tooth plates 92. The two tooth plates 92 are distributed in a V shape, and the gathering ends of the two tooth plates 92 are rotatably connected to the inner wall of the expansion frame 2. A spring piece 94 is connected at the V-shaped angle position of the two tooth plates 92. The spring piece 94 applies an expansion elastic force to the two tooth plates 92 so that the tooth plates 92 can be clamped with the tooth surface of the recessed groove 11. A blocking column 95 is fixed on the inner wall of the expansion frame 2. The blocking column 95 contacts the outer edge of the tooth plate 92 to limit the maximum expansion amplitude of the tooth plate 92.

[0032] Example 1: Figure 7 As shown, the pulling member includes a pull handle 91, which is vertically slid from the top of the expansion frame 2 to the inner side of the expansion frame 2. The bottom end of the pull handle 91 symmetrically rotates two connecting plates 93 distributed in an eight-shaped pattern. The two connecting plates 93 are respectively rotated to connect the middle parts of the two tooth plates 92, and the top of the pull handle 91 is bent to form a gripping portion.

[0033] Open the box lid 8 and place the items in the storage space formed by the box body 1 and the expansion frame 2, then close the box lid 8 for refrigeration, and pull the handle 91 upwards by holding the grip on the top of the handle 91, so that the connecting plate 93 pulls the two tooth plates 92 to overcome the elastic force and retract, and the tooth plates 92 are disengaged from the tooth surfaces of the recessed groove 11, and the expansion frame 2 is slid upward or downward to adjust the volume of the storage space to adapt to the items stored inside, and then release the handle 91, and the elastic force of the spring piece 94 causes the two tooth plates 92 to expand and rotate, and the tooth plates 92 are re-engaged with the tooth surfaces of the recessed groove 11, re-locking the position of the box body 1 and the expansion frame 2 to fix the storage space.

[0034] When lifting the refrigeration equipment, the box body 1 bears the weight of the items inside, so that the tooth surface of the recessed groove 11 applies a downward pulling force to the tooth plate 92, causing the tooth plate 92 to have a tendency to expand. The expansion of the tooth plate 92 is blocked by the blocking column 95, so that the tooth plate 92 and the tooth surface of the recessed groove 11 are stably engaged, keeping the position of the expansion frame 2 and the box body 1 stably locked.

[0035] Vertically distributed scale marks 7 are set on the outer surface of the box body 1. When the expansion frame body 2 is slid to adjust the size of the accommodation space, the volume of the accommodation space is intuitively displayed by aligning the scale marks 7 at different positions of the expansion frame body 2.

[0036] like Figure 5 As shown, a cylindrical protrusion 3 is fixed on 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. The protrusion 3 blocks the limiting groove 31 to prevent the expansion frame 2 from excessively moving upward and disconnecting from the box body 1.

[0037] The structure of the air cooling component is as follows:

[0038] like Figure 2 、 Figure 5 、 Figure 6 As shown, a driving cavity 13 is opened at the bottom of the box body 1 near the front, and the lateral cross-section of the driving cavity 13 is a right-angled triangle. The semiconductor refrigeration plate 5 is vertically installed in the driving cavity 13, and the semiconductor refrigeration plate 5 is attached to the edge of the driving cavity 13. The cooling surface of the semiconductor refrigeration plate 5 is exposed in the driving cavity 13, and the high-temperature surface of the semiconductor refrigeration plate 5 faces outward. A heat dissipation fan 51 is provided to dissipate heat for the semiconductor refrigeration plate 5. A controller for controlling the semiconductor refrigeration plate 5 and an energy storage battery for providing electrical 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.

[0039] An air return channel 12 is defined in the front wall of the housing 1. The bottom of the air return channel 12 passes through the drive chamber 13. The top of the air return channel 12 extends to the top of the housing 1 and passes through the embedded groove 22. An air return port 23 is defined on the surface of the inner frame 21. An air delivery channel 14 is defined in the back wall of the housing 1. The air delivery channel 14 extends through the base wall of the housing 1 and passes through the drive chamber 13. An air delivery port 15 is defined in the inner wall of the housing 1 and passes through the air delivery channel 14. The guide fan 6 is installed in the drive chamber 13.

[0040] When cooling the storage space, the semiconductor refrigeration plate 5 and the guide fan 6 are turned on. The guide fan 6 conducts the airflow into the air supply channel 14, so that the airflow is introduced into the storage space through the air supply port 15. The air in the storage space enters the return air channel 12 through the return air port 23 and is guided back to the drive cavity 13, forming a circulating conductive airflow. The airflow is cooled by the semiconductor refrigeration plate 5 when passing through the inside of the drive cavity 13. The cooled airflow circulates into the storage space to form a low-temperature environment for refrigerated items. The temperature in the storage space is monitored by the temperature sensor 4.

[0041] When adjusting the size of the accommodation space, you need to adjust the cooling intensity accordingly. The operation is as follows:

[0042] like Figure 5 、 Figure 6 As shown, the inner wall of the box body 1 has several air delivery ports 15, and the air delivery ports 15 are arranged vertically at equal intervals. The surface of the inner frame 21 has several air return ports 23, and the air return ports 23 are arranged vertically at equal intervals. The arrangement spacing of the air delivery ports 15 is the same as the arrangement spacing of the air return ports 23. The top of the side of the guide fan 6 is rotatably connected to the drive chamber 13 so that the bottom of the guide fan 6 can swing. A pressure sensor 61 is installed in the drive chamber 13, and the pressure sensor 61 is connected to the controller. The pressure sensor 61 contacts the bottom of the guide fan 6 in the direction of the air delivery channel 14.

[0043] When the expansion frame 2 and the box body 1 are in the maximum contraction state, the inner frame 21 blocks the air supply port 15 and only keeps one air supply port 15 open, and the inner wall of the box body 1 blocks the air return port 23 and only keeps 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 the air supply port 15 and the air return port 23 opened gradually increases, and the number of the air supply port 15 and the air return port 23 opened is the same, thereby ensuring that the larger the accommodation space, the larger the cold air circulation channel is opened, and the smaller the accommodation space, the smaller the cold air circulation channel is opened;

[0044] The guide fan 6 is used to conduct airflow into the air delivery channel 14, thereby increasing the air pressure in the air delivery channel 14. The reaction thrust generated by the guide fan 6 when driving the airflow is transmitted to the pressure sensor 61. The controller sets a standard pressure range for the pressure sensor 61. When the pressure sensor 61 monitors that the reaction force of the guide fan 6 is less than the standard pressure range, the controller increases the speed of the guide fan 6. When the pressure sensor 61 monitors that the reaction force of the guide fan 6 is greater than the standard pressure range, the controller reduces the speed of the guide fan 6, thereby keeping the reaction force of the guide fan 6 within the standard pressure range.

[0045] As the accommodating space expands, the number of open air ports 15 increases, which reduces the air resistance and pressure in the air delivery channel 14, thereby reducing the reaction force of the guide fan 6. At this time, the pressure is fed back through the pressure sensor 61, and the controller increases the speed of the guide fan 6 to increase the circulating air volume to meet the demand for refrigeration of more items. Conversely, the number of open air ports 15 decreases, which increases the air resistance and pressure in the air delivery channel 14, thereby increasing the reaction force of the guide fan 6. At this time, the pressure is fed back through the pressure sensor 61, and the controller reduces the speed of the guide fan 6 to reduce energy consumption.

[0046] Embodiment 2: The difference from embodiment 1 lies in the structure of the pulling member, such as Figure 8 As shown, the pulling member includes a steel wire 96, and a guide wheel 97 is symmetrically mounted in the wall of the expansion frame 2. The steel wire 96 is conducted downward from the top of the expansion frame 2, passes around the guide wheel 97 and connects to the tooth plate 92. The top of the steel wire 96 is connected to the handle 98.

[0047] The handle 98 is held and the steel wire 96 is pulled upward, so that the steel wire 96 pulls the two tooth plates 92 together, thereby releasing the engagement between the tooth plates 92 and the tooth surfaces of the recessed groove 11 .

[0048] While the embodiments of the present invention have been shown and described, it will be apparent to those skilled in the art that various changes, modifications, substitutions, and alterations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A variable volume refrigeration device comprising: The box body (1) is open at the top, and an air cooling component is arranged in the wall of the box body (1). The box body (1) is characterized in that it also includes an expansion frame body (2) that passes through 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), and a groove (22) with an open bottom is formed between the inner frame (21) and the expansion frame body (2), and 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 slid 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 engaged 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) includes two tooth plates (92) provided on the inner wall of the expansion frame (2), the two tooth plates (92) can be expanded and rotated in a V-shape, and a spring piece (94) is connected between the two tooth plates (92) for pushing the tooth plates (92) to expand and engage the tooth surface of the recessed groove (11). The inner wall of the expansion frame (2) is provided with a pulling member, which 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 includes 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) distributed in an eight-shaped pattern, and the connecting plates (93) are rotated to connect the toothed plates (92).

4. The variable capacity refrigeration equipment according to claim 2, characterized in that: The pulling member includes a steel wire (96), a guide wheel (97) symmetrically rotated and installed in 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) passes around the guide wheel (97) and is connected to the tooth plate (92), and the top of the steel wire (96) is connected to the 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 assembly includes a semiconductor refrigeration plate (5), a driving cavity (13) is provided at the bottom of the box (1), the semiconductor refrigeration plate (5) is arranged in the driving cavity (13), and an air supply channel (14) and an air return channel (12) are respectively provided in the two side walls of the box (1), 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), and the air return channel (12) passes through the interior of the box (1) through the air return port (23), and a guide fan (6) is provided in the driving cavity (13), and 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: The inner wall of the box body (1) is vertically arranged with a plurality of gas delivery ports (15) penetrating the gas delivery channel (14), and the surface of the inner frame (21) is vertically arranged with a plurality of gas return ports (23) penetrating the embedded groove (22). 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), and the bottom of the guide fan (6) is swingable. A pressure sensor (61) is provided in the driving chamber (13), and the pressure sensor (61) contacts the bottom of the guide fan (6) in the direction of the air 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 to 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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