Refrigeration equipment

Abstract

The present disclosure relates to a refrigeration device, comprising: a box body (10) having a refrigeration cavity therein; a door body (20) arranged on the box body (10) in an openable and closable manner, the door body (20) having a passage (21) connecting the inner side and the outer side of the door body (20); and an on-off mechanism (30) arranged in the passage (21) and configured to switch the passage (21) between on and off according to an opening and closing sensing signal of the door body (20).

Description

Technical Field

[0001] The present disclosure relates to the field of refrigeration technology, and in particular to a refrigeration device. Background Art

[0002] Freezers, also known as ice chests or refrigerators, can store various foods, medicines, and other items at low temperatures. Due to the temperature difference between the inside and outside of a freezer, the internal air pressure drops below the external pressure, making it difficult to open the door. To overcome this problem, some related technologies incorporate a simple pressure-balancing device into the freezer door. This device draws air from outside the freezer into the interior to achieve pressure balance. Summary of the Invention

[0003] After research, the inventors found that the one-way valve used in the air pressure balancing device in the related art is driven to open by the air pressure difference between the inside and outside of the refrigerator when the door is opened. It has limited sensitivity. Moreover, when the mechanical one-way valve is used on the refrigerator door, it is easy to fail due to being in a low temperature state for a long time, and its service life is short.

[0004] In view of this, an embodiment of the present disclosure provides a refrigeration device capable of improving the sensitivity of an air pressure balancing device of the refrigeration device.

[0005] In one aspect of the present disclosure, a refrigeration device is provided, comprising: a box body having a refrigeration cavity therein; a door body that is openably and closably arranged on the box body, the door body having a passage connecting the inner side and the outer side of the door body; and an on-off mechanism that is arranged in the passage and is configured to switch the passage between connection and disconnection according to an opening and closing sensing signal of the door body.

[0006] In some embodiments, the on-off mechanism includes: a balancing slider, which is slidably arranged in the channel along the extension direction of the channel; and a first suction member, which is fixedly arranged in the channel and is configured to be actuated in response to the sensing signal of the door body opening to apply a suction force to the balancing slider, thereby causing the balancing slider to slide along the channel to a position that connects the channel.

[0007] In some embodiments, the balancing slider includes a ferromagnetic material, and the first attraction member includes a magnetic attraction member, which is configured to generate a magnetic force that attracts the ferromagnetic material when powered on.

[0008] In some embodiments, the on-off mechanism further includes: a second suction member, fixedly disposed in the channel and located on the side of the balancing slider away from the first suction member, the second suction member being configured to be actuated in response to the sensing signal of the door body being closed to apply a suction force to the balancing slider, thereby causing the balancing slider to slide along the channel to a position that closes the channel.

[0009] In some embodiments, the balancing slider includes a ferromagnetic material, and the second attraction member includes a magnetic attraction member, which is configured to generate a magnetic force that attracts the ferromagnetic material when powered on.

[0010] In some embodiments, the on-off mechanism further includes: a first air pipe, disposed in the channel and located on a side of the balancing slider adjacent to the first suction member; and a second air pipe, disposed in the channel and located on a side of the balancing slider adjacent to the second suction member; wherein the first air pipe and the second air pipe are configured to be connected to each other when the balancing slider is in a position to connect the channel to form an airflow channel.

[0011] In some embodiments, the first suction member and the second suction member both have a cavity extending along the extension direction of the channel, at least a portion of the first air tube is fixedly disposed in the cavity of the first suction member, and at least a portion of the second air tube is fixedly connected in the cavity of the second suction member.

[0012] In some embodiments, at least one of the first air tube and the second air tube is made of rubber material or plastic material.

[0013] In some embodiments, the refrigeration equipment further includes: a sealing ring, which is connected to the end of the second air pipe away from the first air pipe and forms a concave cavity on a side of the door body adjacent to the refrigeration cavity.

[0014] In some embodiments, the on-off mechanism further includes: a sealing gasket, which is provided at an end portion of the second air pipe adjacent to the balancing slider.

[0015] In some embodiments, the balancing slider has a through hole connecting both sides of the balancing slider, and the end of the first air tube adjacent to the balancing slider is configured to partially block or not block the opening of the through hole adjacent to the first air tube when the balancing slider is pressed against the first air tube, and the end of the second air tube adjacent to the balancing slider is configured to completely block the opening of the through hole adjacent to the second air tube when the balancing slider is pressed against the second air tube.

[0016] In some embodiments, the refrigeration equipment further includes: an end cover fixedly disposed on a side of the door body away from the balancing slider and abutting against the first air pipe, and the end cover has a vent hole connected to the first air pipe.

[0017] In some embodiments, the refrigeration device further includes: a heating element configured to heat the balancing slider.

[0018] In some embodiments, the heating element includes an electric heating plate, and the electric heating plate is attached to the surface of the balancing slider.

[0019] In some embodiments, the electric heating plate is configured to be energized in response to a sensing signal indicating that the door is opened, so as to increase the temperature of the balancing slider.

[0020] In some embodiments, the surface of the balancing slider has a waterproof plating or coating.

[0021] Therefore, according to the embodiment of the present disclosure, based on the opening and closing sensing signal of the door body, an on-off mechanism is adopted as an air pressure balancing device to realize the switching of the connection relationship between the channels inside and outside the door body. Compared with the air pressure balancing device using a one-way valve in the related art, the on-off mechanism of this embodiment does not need to rely on the air pressure difference between the inside and outside of the refrigerator when the door is opened to drive the one-way valve to conduct, but instead connects or closes the channel by sensing the opening and closing of the door body, thereby achieving higher sensitivity. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0023] The present disclosure can be more clearly understood from the following detailed description with reference to the accompanying drawings, in which:

[0024] Figure 1 is a schematic structural diagram of some embodiments of the refrigeration equipment according to the present disclosure;

[0025] Figure 2 yes Figure 1 The figure includes an enlarged schematic diagram of a partially cut-away region A;

[0026] Figure 3 yes Figure 2 Enlarged schematic diagram of the middle circle B;

[0027] Figure 4 yes Figure 3 A schematic diagram of the balance slider in the position that shuts off the channel;

[0028] Figure 5 Schematic diagram of the structure of the magnetic attraction component in some embodiments of the refrigeration equipment according to the present disclosure.

[0029] It should be understood that the size of each part shown in the drawings is not drawn according to the actual proportional relationship.In addition, the same or similar reference numerals represent the same or similar components. DETAILED DESCRIPTION

[0030] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the present disclosure, its application, or use. The present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present disclosure thorough and complete and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of parts and steps, the composition of materials, numerical expressions, and numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary and not as limiting.

[0031] The terms "first", "second" and similar terms used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. The terms "include" or "comprises" and similar terms mean that the elements before the term include the elements listed after the term, and do not exclude the possibility of also including other elements. The terms "upper", "lower", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0032] In the present disclosure, when a specific device is described as being located between a first device and a second device, an intervening device may or may not be present between the specific device and the first device or the second device. When a specific device is described as being connected to another device, the specific device may be directly connected to the other device without an intervening device, or may be not directly connected to the other device but with an intervening device.

[0033] All terms (including technical or scientific terms) used in this disclosure have the same meaning as those understood by one of ordinary skill in the art to which this disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in, for example, general dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an idealized or highly formal sense, unless explicitly defined herein.

[0034] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0035] Figure 1 It is a schematic structural diagram of some embodiments of the refrigeration equipment according to the present disclosure. Figure 2 yes Figure 1 The diagram includes an enlarged schematic view of a partially cut-away region A. Figure 3 yes Figure 2 Enlarged schematic diagram of circle B in the middle. Figure 4 yes Figure 3 Diagram showing the balance slider in the channel-off position.

[0036] refer to Figure 1 The embodiment of the refrigeration device provided by the present disclosure includes a box body 10 and a door body 20. The interior of the box body 10 has a refrigeration cavity for refrigerating various items, such as food and medicine. The operating temperature of the refrigeration cavity is usually lower than the ambient temperature outside the box body 10. The refrigeration cavity of the box body 10 has an open side to facilitate the taking and placing of items. At least one layer of shelves can be provided in the refrigeration cavity, and items can be stored in layers. The refrigeration cavity can be a one-piece cavity, or a plurality of partitioned cavities can be formed by partitions.

[0037] The door 20 is openably and closably mounted on the housing 10. Specifically, the door 20 may be hinged to at least one side frame of the housing 10. The refrigeration unit may include a single door 20 that opens on one side, or two doors 20 that open in opposite directions. To enhance the sealing of the refrigerated space when the door is closed, a door seal 22 may be provided near the door 20 and the housing 10.

[0038] refer to Figure 2 The door body 20 has a passage 21 connecting the inner side and the outer side of the door body 20. Figure 2 In the embodiment, the door body 20 may include an inner door panel 23, an outer door panel 24, and a door core 25 disposed between the inner door panel 23 and the outer door panel 24. The passage 21 may extend through the door core 25. The inner door panel 23 and the outer door panel 24 may be connected by an extruded strip to form the exterior structure of the door body. The door core 25 located between the inner door panel 23 and the outer door panel 24 may be formed by filling with a foam material. Both the inner door panel 23 and the outer door panel 24 may be sheet metal parts, and the extruded strip may be an injection molded part.

[0039] The on-off mechanism 30 is disposed in the passage 21 and is configured to switch the passage 21 between connection and disconnection based on the door 20 opening and closing sensing signal. Based on the door 20 opening and closing sensing signal, the on-off mechanism 30 serves as an air pressure balancing device to switch the connection relationship between the passage 21 inside and outside the door 20.

[0040] Compared with the air pressure balancing device using a one-way valve in the related art, the on-off mechanism 30 of this embodiment does not need to rely on the air pressure difference between the inside and outside of the refrigerator when the door is opened to drive the one-way valve to conduct. Instead, it connects or shuts off the channel 21 by sensing the opening and closing of the door body 20, thereby achieving higher sensitivity.

[0041] For a refrigeration appliance, the on / off mechanism 30 can communicate with a sensor in the refrigeration appliance for detecting the door opening / closing state or movement, and switch the channel 21 between on and off states based on the received opening / closing sensing signal. For example, the refrigeration appliance may include a sensing device disposed within a door lock for sensing the door opening and closing.

[0042] refer to Figure 2 and Figure 3 In some embodiments, the on-off mechanism 30 includes a balancing slider 31 and a first attracting member 32. The balancing slider 31 is slidably disposed within the channel 21 along the extension direction of the channel 21. The first attracting member 32 is fixedly disposed within the channel 21 and is configured to be actuated in response to a sensing signal indicating that the door body 20 is opened, thereby applying an attracting force to the balancing slider 31, thereby causing the balancing slider 31 to slide along the channel 21 to a position that connects the channel 21.

[0043] The first suction member 32 is actuated when the door body 20 is opened, and can attract the balancing slider 31 to the connected position in the actuated state, thereby balancing the air pressure inside and outside the door body 20 when the door body 20 is opened, making it convenient to open the door, and the structural reliability of this balanced air pressure is better.

[0044] In some embodiments, the balancing slider 31 comprises a ferromagnetic material, and the first attracting member 32 comprises a magnetic member configured to generate a magnetic force that attracts the ferromagnetic material when powered. The first attracting member 32 can employ a magnetic member to provide a magnetic attraction force to the balancing slider 31 comprising the ferromagnetic material.

[0045] The surface of the balancing slider 31 has a waterproof plating layer or coating. The waterproof plating layer or coating can effectively prevent the ferromagnetic material from rusting when it directly contacts water vapor.

[0046] Figure 5 This is a schematic diagram of the structure of a magnetic component in some embodiments of the refrigeration device according to the present disclosure. The magnetic component may include an iron core 301 and a coil 302 wound around the iron core 301. The iron core may be annular and made of an iron alloy. The balancing slider 31 may be made entirely of ferromagnetic material, or partially of ferromagnetic material. This electromagnetic switching method is relatively sensitive and takes up little space.

[0047] refer to Figure 2-Figure 4In some embodiments, the on-off mechanism 30 further includes a second attracting member 33. The second attracting member 33 is fixedly disposed in the channel 21 and is located on a side of the balancing slider 31 away from the first attracting member 32. The second attracting member 33 is configured to be actuated in response to a sensing signal indicating that the door body 20 is closed, so as to apply an attracting force to the balancing slider 31, thereby causing the balancing slider 31 to slide along the channel 21 to a position that closes the channel 21.

[0048] The second suction member 33 is actuated when the door body 20 is closed, and can attract the balancing slider 31 to the closed position in the actuated state, thereby closing the air flow channel inside and outside the door body 20 when the door body 20 is closed to prevent the cold air inside the refrigeration equipment from leaking out.

[0049] The second attraction member 33 may also include a magnetic attraction member, which is configured to generate a magnetic force to attract the ferromagnetic material when powered. The second attraction member 33 uses a magnetic attraction member to provide a magnetic attraction force to the balance slider 31 containing ferromagnetic material. Figure 5 As shown, it includes an iron core and a coil wound around the iron core. The iron core can be annular and made of an iron alloy. The balancing slider 31 can be made entirely of ferromagnetic material, or partially of ferromagnetic material. This electromagnetic switching method is relatively sensitive and takes up little space.

[0050] refer to Figure 2 and Figure 3 In some embodiments, the on-off mechanism 30 further includes a first air pipe 34 and a second air pipe 35. The first air pipe 34 is disposed within the channel 21 and is located on a side of the balancing slider 31 adjacent to the first engaging member 32. The second air pipe 35 is disposed within the channel 21 and is located on a side of the balancing slider 31 adjacent to the second engaging member 33. The first air pipe 34 and the second air pipe 35 are configured to communicate with each other when the balancing slider 31 is in a position that connects the channel 21, thereby forming an airflow channel.

[0051] By setting the first air pipe 34 and the second air pipe 35 in the channel 21 on the door body 20, when the two are connected, the air flow inside the door body 20 can flow to the outside of the door body 20 through the first air pipe 34 and the second air pipe 35, avoiding the formation of a cold bridge when the door is opened and reducing the leakage of cold energy.

[0052] refer to Figure 3 In some embodiments, the first suction member 32 and the second suction member 33 both have a cavity that passes through the extension direction of the channel 21, at least a portion of the first air pipe 34 is fixedly disposed in the cavity of the first suction member 32, and at least a portion of the second air pipe 35 is fixedly connected to the cavity of the second suction member 33.

[0053] In this way, the first air pipe 34 can separate the air flow flowing through the first air pipe 34 and the first suction component 32, and the second air pipe 35 can separate the air flow flowing through the second air pipe 35 and the second suction component 33, so as to prevent the colder air flow from affecting the long-term operation of the first suction component 32 and the second suction component 33, thereby improving the service life.

[0054] In some embodiments, at least one of the first air pipe 34 and the second air pipe 35 can be made of rubber or plastic (e.g., polypropylene random copolymer (PPR) material). The first air pipe 34 and / or the second air pipe 35 made of rubber or plastic can better achieve thermal insulation.

[0055] refer to Figure 2 and Figure 3 In some embodiments, the refrigeration device further includes a sealing ring 40. The sealing ring 40 is connected to the end of the second air pipe 35 away from the first air pipe 34, and forms a concave cavity 41 on the side of the door body 20 adjacent to the refrigeration cavity.

[0056] The sealing ring 40 can realize the sealing connection between the second air pipe 35 and the inner wall of the door body 20, such as the inner plate of the door body 20. The concave cavity 41 has a certain volume, which can reduce the possibility of condensation on this side freezing and causing the door body 20 to be difficult to open. Figure 3 In the embodiment, the concave cavity 41 formed by the sealing ring 40 may be in the form of a cone, which is conducive to the condensation flowing downward and avoids the accumulation of condensed water in the concave cavity 41.

[0057] In some embodiments, the on / off mechanism 30 further includes a sealing gasket. The sealing gasket is disposed at the end of the second air pipe 35 adjacent to the balancing slider 31. When the balancing slider 31 abuts the end of the second air pipe 35, the sealing gasket provides a seal, thereby ensuring the overall sealing of the refrigeration appliance when the door is closed.

[0058] refer to Figure 3 and Figure 4 In some embodiments, the balancing slider 31 has a through hole 311 connecting both sides of the balancing slider 31. The balancing slider 31 may be in the shape of a round block. The end of the first air pipe 34 adjacent to the balancing slider 31 is configured to partially block or not block the opening of the through hole 311 adjacent to the first air pipe 34 when the balancing slider 31 abuts against the first air pipe 34 (see Figure 3 ), the end portion of the second air pipe 35 adjacent to the balancing slider 31 is configured to completely block the opening of the through hole 311 adjacent to the second air pipe 35 when the balancing slider 31 abuts against the second air pipe 35 (see Figure 4 ).

[0059] exist Figure 3 and Figure 4 In the embodiment, the through hole 311 of the balancing slider 31 is a straight hole. In other embodiments, the through hole 311 can also be an oblique hole or a curved hole. When the balancing slider 31 slides to different positions, the passage 21 can be opened or closed by adjusting the degree of coverage of the opening by the first air pipe 34 and the second air pipe 35.

[0060] refer to Figure 2 and Figure 3 In some embodiments, the refrigeration device further includes an end cover 50 . The end cover 50 is fixedly disposed on a side of the door body 20 away from the balancing slider 31 and abuts against the first air pipe 34 . The end cover 50 has a vent hole communicating with the first air pipe 34 .

[0061] The sealing ring 40, channel 21, and end cap 50 together form the installation space for the on / off mechanism 30. The end cap 50 and sealing ring 40 provide stable support at both ends of the on / off mechanism 30. The end cap 50 can be made of a material with a certain strength, rigidity, and weak magnetism, such as an alloy such as 304 stainless steel, to ensure the airtightness of the airway and minimize the impact on the on / off structure.

[0062] In some embodiments, the refrigeration device may further include a heating element. The heating element is configured to heat the balancing slider 31. This can increase the temperature of the balancing slider 31 to melt any ice that may have formed on the balancing slider 31, ensuring smooth sliding of the balancing slider 31. The heating element can be heated by resistance, induction, infrared heating, or other methods.

[0063] exist Figure 2 and Figure 3 In the embodiment, the heating element may include an electric heating plate 60, which is attached to the surface of the balancing slider 31. By energizing the electric heating plate 60 attached to the surface of the balancing slider 31, the temperature of the balancing slider 31 can be increased without occupying a large space.

[0064] The electric heater 60 is energized in response to a sensing signal indicating that the door 20 is open, thereby increasing the temperature of the balancing slider 31. The electric heater 60 can continuously heat the balancing slider 31 or can heat it at different times, such as when the door 20 is opened, to reduce the risk of the balancing slider 31 becoming stuck due to ice when the door is opened.

[0065] exist Figure 1-Figure 3 The refrigeration unit may further include a display module 70 and a baffle 61. The display module 70 is located on a side of the door 20 away from the passage 21 and can be used to display relevant data about the refrigeration unit. The electric heating plate 602 can be electrically connected to the circuit board of the display module 70, thereby facilitating the wiring arrangement of the electric heating plate 602.

[0066] The surface of the door core 25 adjacent to the door outer panel 24 may have a countersunk hole, and the countersunk hole and the door outer panel form a mounting cavity. The end cover 50 is arranged in the countersunk hole, and a baffle 61 is provided on the end cover 50. One end of the baffle 61 is fixedly connected to the end cover 50, and a gap is formed between the other end and the end cover 50. The baffle 61 can be a sheet metal part bent twice, for example, made of carbon steel. One end of the baffle 61 can be fixedly connected to the end cover 50, and the other end is suspended to form a gap.

[0067] Air outside the door 20 can flow into the on / off mechanism 30 through the gap between the display module 70 and the door 20 and the gap formed by the baffle 61. When the on / off mechanism 30 is connected, it flows through the on / off mechanism 30 and into the inside of the door 20. This circulating airflow can cool components such as the circuit board of the display module 70, reducing their temperature.

[0068] Once the on / off mechanism 30 fails, the baffle 61 can block the cold airflow discharged from the on / off mechanism 30 to prevent the cold airflow from condensing when meeting the outside air at the back of the display module 70, thereby causing the risk of short circuit of the display module.

[0069] When the user needs to open the door, a sensor or other induction device can be installed on the door lock. When the induction device senses that the door is opened, the coil of the first suction part generates magnetic force after being energized, while the coil of the second suction part loses its magnetic force after being de-energized. According to the magnetic effect of the current, the iron core of the first suction part will temporarily have magnetic attraction, which will adsorb the balancing slider to the end of the first air pipe. At this time, the end of the first air pipe avoids the through hole on the balancing slider, so that the air outside the door can pass through the first air pipe, the through hole on the balancing slider, and the second air pipe to enter the inside of the door, thereby balancing the internal and external pressures of the refrigeration equipment and making the door easy to open. Since the only cold bridge formed at this time is the through hole of the first air pipe, the second air pipe, and the balancing slider, the loss of cold inside the refrigerator can be greatly reduced.

[0070] When the user closes the door, the sensing device on the door lock senses that the door is closed, and the coil of the second attraction part is energized to generate magnetic force, while the coil of the first attraction part is de-energized and loses magnetic force. According to the magnetic effect of the current, the iron core of the second attraction part will temporarily have magnetic attraction, causing the balancing slider to move in the opposite direction, and the balancing slider will be adsorbed to the end of the second air pipe and sealed with the end of the second air pipe. At this time, the airflow channel is in a closed state.

[0071] After working for a certain period of time, condensation forms and freezes between the balancing slider, the first air pipe and the second air pipe, making the balancing device ineffective. Since the electric heating plate is attached to the balancing slider, it can be powered on and heated up every time the door is opened, so that the temperature of the balancing slider rises and the ice that may exist on it melts, allowing it to slide smoothly.

[0072] The refrigeration equipment can be a refrigerator, a freezer, or a cold storage in the form of a building. For the cold storage, the wall of the cold storage is the box.

[0073] Thus far, various embodiments of the present disclosure have been described in detail. To avoid obscuring the concept of the present disclosure, some details known in the art have not been described. Based on the above description, those skilled in the art can fully understand how to implement the technical solutions disclosed herein.

[0074] Although some specific embodiments of the present disclosure have been described in detail through examples, those skilled in the art will understand that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. Those skilled in the art will understand that the above embodiments may be modified or some technical features may be replaced with equivalents without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. A refrigeration device, characterized in that: include: A box body (10) having a refrigeration cavity therein; a door body (20) which is openably and closably arranged on the box body (10), wherein the door body (20) has a passage (21) connecting the inner side and the outer side of the door body (20); and An on-off mechanism (30) is provided in the passage (21) and is configured to switch the passage (21) between connection and disconnection according to an opening and closing sensing signal of the door body (20); Wherein, the on-off mechanism (30) comprises: A balancing slider (31) is slidably disposed in the channel (21) along an extension direction of the channel (21); a first suction member (32) fixedly disposed in the channel (21) and configured to be actuated in response to a sensing signal indicating that the door body (20) is opened, so as to apply a suction force to the balancing slider (31), thereby causing the balancing slider (31) to slide along the channel (21) to a position where the channel (21) is connected; and The second suction member (33) is fixedly arranged in the channel (21) and is located on a side of the balancing slider (31) away from the first suction member (32). The second suction member (33) is configured to be actuated in response to a sensing signal of the door body (20) being closed, so as to apply a suction force to the balancing slider (31), thereby causing the balancing slider (31) to slide along the channel (21) to a position where the channel (21) is closed.

2. The refrigeration equipment according to claim 1, characterized in that The balancing slider (31) comprises a ferromagnetic material, and the first attracting member (32) comprises a magnetic member, wherein the magnetic member is configured to generate a magnetic force that attracts the ferromagnetic material when powered on.

3. The refrigeration equipment according to claim 1, characterized in that The balancing slider (31) comprises a ferromagnetic material, and the second attracting member (33) comprises a magnetic member, wherein the magnetic member is configured to generate a magnetic force that attracts the ferromagnetic material when powered on.

4. The refrigeration equipment according to claim 1, characterized in that The on-off mechanism (30) further comprises: A first air pipe (34) is disposed in the channel (21) and is located on a side of the balancing slider (31) adjacent to the first suction member (32); and A second air pipe (35) is disposed in the channel (21) and is located on a side of the balancing slider (31) adjacent to the second suction member (33); The first air pipe (34) and the second air pipe (35) are configured to communicate with each other when the balancing slider (31) is in a position that enables the channel (21) to communicate, so as to form an air flow channel.

5. The refrigeration equipment according to claim 4, characterized in that The first suction member (32) and the second suction member (33) both have a cavity extending along the extension direction of the channel (21); at least a portion of the first air pipe (34) is fixedly arranged in the cavity of the first suction member (32); and at least a portion of the second air pipe (35) is fixedly connected in the cavity of the second suction member (33).

6. The refrigeration equipment according to claim 4, characterized in that At least one of the first air pipe (34) and the second air pipe (35) is made of rubber material or plastic material.

7. The refrigeration equipment according to claim 4, characterized in that Also includes: The sealing ring (40) is in communication with the end of the second air pipe (35) away from the first air pipe (34), and forms a concave cavity (41) on one side of the door body (20) adjacent to the refrigeration cavity.

8. The refrigeration equipment according to claim 4, characterized in that The on-off mechanism (30) further comprises: A sealing gasket is provided at an end portion of the second air pipe (35) adjacent to the balancing slider (31).

9. The refrigeration equipment according to claim 4, characterized in that The balancing slider (31) has a through hole (311) communicating with both sides of the balancing slider (31); an end portion of the first air tube (34) adjacent to the balancing slider (31) is configured to partially block or not block an opening of the through hole (311) adjacent to one side of the first air tube (34) when the balancing slider (31) abuts against the first air tube (34); and an end portion of the second air tube (35) adjacent to the balancing slider (31) is configured to completely block an opening of the through hole (311) adjacent to one side of the second air tube (35) when the balancing slider (31) abuts against the second air tube (35).

10. The refrigeration equipment according to claim 7, characterized in that Also includes: An end cover (50) is fixedly arranged on a side of the door body (20) away from the balancing slider (31) and abuts against the first air pipe (34). The end cover (50) has a vent hole communicating with the first air pipe (34).

11. The refrigeration equipment according to claim 1, characterized in that Also includes: A heating element is configured to heat the balancing slider (31).

12. The refrigeration equipment according to claim 11, characterized in that The heating element comprises an electric heating plate (60), and the electric heating plate (60) is attached to the surface of the balancing slider (31).

13. The refrigeration device according to claim 12, characterized in that The electric heating plate (60) is configured to be energized in response to an induction signal indicating that the door body (20) is opened, so as to increase the temperature of the balancing slider (31).

14. The refrigeration equipment according to claim 2 or 3, characterized in that: The surface of the balancing slider (31) has a waterproof plating layer or coating.

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