Heat-preservation and fresh-keeping meal cover

Abstract

The utility model discloses a heat preservation and freshness retaining meal cover which comprises a machine shell and a cover body. The cover body can be arranged above the table in a covering mode, and a fresh-keeping cavity is defined by the cover body and the table. The machine shell is arranged above the cover body; the shell is provided with a circuit board, and a semiconductor refrigerating and heating unit and an inner circulating fan which are electrically connected with the circuit board; the machine shell is provided with a lower bin, and the lower bin is located in the fresh-keeping cavity. A plurality of internal circulation air outlet holes are formed in the side direction of the lower bin chamber, and an internal circulation air inlet hole is formed in the lower portion of the lower bin chamber; the internal circulation fan can suck air from the internal circulation air inlet hole and send the air to the internal circulation air outlet hole; the semiconductor refrigerating and heating unit can refrigerate or heat the lower bin. According to the utility model, the circulating air flow is not directly blown to meals, so that bacteria and dust are not easy to touch the meals, and the meals are not easy to be blown to a table.

Description

Technical Field

[0001] The utility model relates to the technical field of warm food preservation covers, and particularly relates to a heat preservation and freshness preservation food cover. Background Art

[0002] In daily life, the leftover food needs to wait until the temperature of the food drops to the same as the room temperature, and then cover it with plastic wrap and put it in the refrigerator for freshness preservation. If the plastic wrap is not sealed, the food is easily contaminated. Such operation is very cumbersome, and often there is no space in the refrigerator to put it. If it is not put in the refrigerator, it is very easy to deteriorate due to the high temperature, which will cause waste. Usually, a food cover is used to cover the dining table to play a role in preserving the fruits, vegetables or food on the dining table and preventing mosquitoes. For example, a constant temperature heat preservation and freshness preservation cover disclosed in patent number CN202222256606.4. However, this kind of heat preservation and freshness preservation cover has the following defects:

[0003] Its body is arranged in the upper middle of the cover body, and the cold air or hot air of the body directly blows the air flow downward through the internal fan towards the lower part of the cover body. The air flow directly blows towards the food below the cover body, which easily blows bacteria and dust towards the surface of the food, and blows the food onto the table, resulting in a poor actual use experience for users. Therefore, further improvement is needed. Summary of the Utility Model

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. For this reason, the utility model provides a heat preservation and freshness preservation food cover.

[0005] An embodiment of the utility model adopts the following technical solution to solve its technical problems: a heat preservation and freshness preservation food cover, comprising: a machine shell and a cover body; the cover body can be covered above the table and enclose a freshness preservation cavity with the table; the machine shell is arranged above the cover body;

[0006] The machine shell is provided with a circuit board, a semiconductor refrigeration and heating unit electrically connected to the circuit board, and an internal circulation fan; the machine shell is provided with a lower chamber, and the lower chamber is located in the freshness preservation cavity; several internal circulation air outlet holes are arranged on the side of the lower chamber, and an internal circulation air inlet hole is arranged below the lower chamber; the internal circulation fan can suck air from the internal circulation air inlet hole and send the air towards the internal circulation air outlet holes; the semiconductor refrigeration and heating unit can refrigerate or heat the lower chamber.

[0007] Optionally, the cover body is provided with an upper chamber, and the upper chamber is provided with an external circulation fan electrically connected to the circuit board; the upper chamber is provided with an external circulation air inlet hole and an external circulation air outlet hole.

[0008] Optionally, the machine shell includes an upper shell, a partition board and a lower shell; the upper shell and the partition board enclose to form the upper chamber, and the lower shell and the partition board enclose to form the lower chamber.

[0009] Optionally, the upper shell and the lower shell are symmetrically arranged with respect to the partition board.

[0010] Optionally, the semiconductor refrigeration and heating unit is embedded in the partition board; heat exchange fins are arranged on the upper and lower sides of the semiconductor refrigeration and heating unit; the external circulation fan is arranged close to the heat exchange fin on the upper side, and the internal circulation fan is arranged close to the heat exchange fin on the lower side.

[0011] Optionally, the circuit board is arranged in the upper storage chamber.

[0012] Optionally, the cover body includes a cover cloth and a cover frame; the machine shell is provided with a telescopic channel, and a telescopic cylinder is arranged through the telescopic channel; a plurality of connecting rods are arranged between the telescopic cylinder and the cover frame; during the telescopic movement of the telescopic cylinder relative to the machine shell, the cover frame can be switched between a contracted state and an unfolded state through the connecting rods.

[0013] Optionally, the connecting rods are uniformly arranged on the circumferential direction of the telescopic cylinder; two ends of each connecting rod are respectively hinged to the telescopic cylinder and the cover frame.

[0014] Optionally, the telescopic cylinder is provided with a limiting step, and the limiting step can abut against the end of the telescopic channel.

[0015] Optionally, the telescopic cylinder is provided with an elastic limiting member, and the elastic limiting member can abut against the end of the telescopic channel; by pressing the elastic limiting member, the abutting connection between the elastic limiting member and the telescopic channel can be released.

[0016] The beneficial effects of the present utility model: The internal circulation fan can suck air from the internal circulation air inlet hole below the lower storage chamber and send the air out through the internal circulation air outlet hole on the side of the lower storage chamber; during this process, the semiconductor refrigeration and heating unit can send out hot air or cold air from the side of the lower storage chamber and flow along the wall surface of the cover body towards the lower part of the preservation cavity, so as to cover the meals on the table; after the circulating air flow reaches the table, it flows upwards and returns to the internal circulation air inlet hole to be sucked into the lower storage chamber. This circulating air flow does not directly blow towards the meals, so bacteria and dust are not easy to touch the meals, and it is not easy to blow the meals onto the table.

[0017] In order to make the above objects, features and advantages of the present utility model more obvious and understandable, the following specific preferred embodiments are given below, and in conjunction with the accompanying drawings, the detailed description is as follows. Description of the Drawings

[0018] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1This is a schematic structural diagram of the heat-insulating and fresh-keeping food cover of the present utility model in the unfolded state;

[0020] Figure 2 is Figure 1 a schematic structural diagram of the heat-insulating and fresh-keeping food cover in the contracted state.

[0021] Description of main component symbols:

[0022] 10. Machine case; 11. Circuit board; 12. Semiconductor refrigeration and heating unit; 13. Inner circulation fan; 14. Outer circulation fan; 15. Upper shell; 16. Partition board; 17. Lower shell; 18. Heat exchange fin; 19. Telescopic channel; 20. Cover body; 21. Cover cloth; 22. Cover skeleton; 30. Lower storage chamber; 31. Inner circulation air outlet hole; 32. Inner circulation air inlet hole; 40. Upper storage chamber; 41. Outer circulation air outlet hole; 42. Outer circulation air inlet hole; 50. Telescopic cylinder; 51. Connecting rod; 52. Limit step; 53. Elastic limiting member. Detailed implementation manners

[0023] This part will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the drawings. The role of the drawings is to supplement the description of the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but it cannot be understood as a limitation on the protection scope of the present utility model.

[0024] In the description of the present utility model, the meaning of "a plurality of" is more than two. Understandings such as "greater than", "less than", and "exceeding" do not include the present number, and understandings such as "above", "below", and "within" include the present number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0025] In the description of the present utility model, it should be understood that for the orientation description, such as the orientation or position relationship indicated by "upper", "lower", "front", "rear", "left", "right", etc., is based on the orientation or position relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model.

[0026] In the present utility model, unless otherwise clearly defined, terms such as "arranged", "installed", and "connected" should be understood in a broad sense. For example, they can be directly connected, or indirectly connected through an intermediate medium; they can be fixedly connected, or detachably connected, or integrally formed; they can be mechanically connected; they can be the communication inside two components or the interaction relationship between two components. Those skilled in the art can reasonably determine the specific meanings of the above terms in the present utility model in combination with the specific content of the technical solution.

[0027] Embodiment

[0028] Referring to Figure 1 and Figure 2 As shown in FIGS. and, a heat-insulating and fresh-keeping food cover proposed by the present utility model includes: a casing 10 and a cover body 20; the cover body 20 can be disposed above the table and enclose with the table to form a fresh-keeping cavity; the casing 10 is disposed above the cover body 20.

[0029] The casing 10 is provided with a circuit board 11, a semiconductor refrigeration and heating unit 12 electrically connected to the circuit board 11, and an internal circulation fan 13; the casing 10 is provided with a lower chamber 30, and the lower chamber 30 is located in the fresh-keeping cavity; a plurality of internal circulation air outlet holes 31 are provided on the side of the lower chamber 30, and an internal circulation air inlet hole 32 is provided below the lower chamber 30; the internal circulation fan 13 can suck air from the internal circulation air inlet hole 32 and send the air toward the internal circulation air outlet holes 31; the semiconductor refrigeration and heating unit 12 can refrigerate or heat the lower chamber 30.

[0030] In the present utility model, the internal circulation fan 13 can suck air from the internal circulation air inlet hole 32 below the lower chamber 30 and send the air toward the internal circulation air outlet holes 31 on the side of the lower chamber 30; in this process, the semiconductor refrigeration and heating unit 12 can send hot air or cold air out from the side of the lower chamber 30 and flow along the wall of the cover body 20 toward the lower part of the fresh-keeping cavity, so as to cover the food on the table; after the circulating air flow reaches the table, it flows upward and returns to the internal circulation air inlet hole 32 to be sucked into the lower chamber 30. This circulating air flow does not directly blow toward the food, and bacteria and dust are not likely to touch the food, nor are they likely to blow the food onto the table.

[0031] In this embodiment, the cover body 20 is provided with an upper chamber 40, and the upper chamber 40 is provided with an external circulation fan 14 electrically connected to the circuit board 11; the upper chamber 40 is provided with an external circulation air inlet hole 42 and an external circulation air outlet hole 41. The external circulation fan 14 in the upper chamber 40 can form an external circulation air flow connecting to the outside air in the upper chamber 40 to improve the heat dissipation or refrigeration efficiency of the cold end and the hot end of the semiconductor refrigeration and heating unit 12.

[0032] The refrigeration and heating of the semiconductor refrigeration and heating unit 12 is a direct application of the prior art. By changing the direction of the current, refrigeration or heating can be achieved on the same thermoelectric cooler. This will not be described in detail here.

[0033] In some other embodiments, the semiconductor refrigeration and heating unit 12 can adopt a combination of an independent heating and refrigeration unit with a thermoelectric cooler and an electrothermal structure.

[0034] In this embodiment, the housing 10 includes an upper housing 15, a partition 16, and a lower housing 17; the upper housing 15 and the partition 16 enclose and form an upper chamber 40, and the lower housing 17 and the partition 16 enclose and form a lower chamber 30. The housing 10 is separately provided as the upper housing 15, the partition 16, and the lower housing 17, which can be conveniently assembled to form the structures of the upper chamber 40 and the lower chamber 30.

[0035] Furthermore, the upper housing 15 and the lower housing 17 are symmetrically arranged with respect to the partition 16. With the symmetrically arranged structures of the upper housing 15 and the lower housing 17, the same housing can be used for assembly, reducing the types of materials and the production and preparation costs.

[0036] In this embodiment, in order to accelerate the heat dissipation and refrigeration efficiency of the semiconductor refrigeration and heating unit 12, the semiconductor refrigeration and heating unit 12 is embedded in the partition 16; heat exchange fins 18 are provided on the upper and lower sides of the semiconductor refrigeration and heating unit 12; the external circulation fan 14 is arranged close to the upper heat exchange fin 18, and the internal circulation fan 13 is arranged close to the lower heat exchange fin 18.

[0037] In this embodiment, the circuit board 11 is arranged in the upper chamber 40. The electronic components of the circuit board 11 and the control panel are arranged in the upper chamber 40, and only the internal circulation fan 13 is arranged in the lower chamber 30, which can make the circulating air flow in the fresh-keeping chamber and the lower chamber 30 more uniform and smooth, reducing the presence of blocking components.

[0038] In some embodiments, the cover body 20 includes a cover cloth 21 and a cover frame 22; the housing 10 is provided with a telescopic channel 19, and a telescopic cylinder 50 is arranged through the telescopic channel 19; a plurality of connecting rods 51 are arranged between the telescopic cylinder 50 and the cover frame 22; during the telescopic movement of the telescopic cylinder 50 relative to the housing 10, the cover frame 22 can be switched between the contracted state and the unfolded state through the connecting rods 51. By telescopically moving the telescopic cylinder 50, the cover frame 22 can be switched between the contracted state and the unfolded state, thereby conveniently contracting the cover frame 22 and the cover cloth 21 for easy storage of the food cover.

[0039] In this embodiment, the connecting rods 51 are uniformly arranged circumferentially on the telescopic cylinder 50; both ends of the connecting rods 51 are respectively hinged to the telescopic cylinder 50 and the cover frame 22. The contraction structure of the telescopic cylinder 50, the cover frame 22 and the connecting rods 51 is similar to that of a folding umbrella, and the hinged structure can be set by referring to the folding umbrella.

[0040] In this embodiment, the telescopic cylinder 50 is provided with a limiting step 52, and the limiting step 52 can abut against the end of the telescopic channel 19. Through the limiting step 52, the moving position of the telescopic cylinder 50 can be restricted to prevent the telescopic cylinder 50 from detaching from the machine housing 10.

[0041] In some embodiments, the telescopic cylinder 50 is provided with an elastic limiting member 53, and the elastic limiting member 53 can abut against the end of the telescopic channel 19; by pressing the elastic limiting member 53, the abutting connection between the elastic limiting member 53 and the telescopic channel 19 can be released. The elastic limiting member 53 can be a U-shaped elastic sheet or a combined structure of a spring and an elastic sheet; when the telescopic cylinder 50 moves to the top or bottom of the telescopic channel 19, the elastic limiting member 53 can extend out and abut against the end of the telescopic channel 19, thereby restricting the moving position of the telescopic cylinder 50; by pressing the elastic limiting member 53, the locking and limiting state can be released, and then the telescopic cylinder 50 can be moved again.

[0042] Certainly, the present utility model is not limited to the above embodiments. Those skilled in the art can also make equivalent deformations or substitutions without departing from the spirit of the present utility model, and these equivalent deformations and substitutions are all included in the scope defined by the claims of this application.

Claims

1. A food cover for heat preservation and freshness preservation, characterized in that: include: A casing (10) and a cover (20); The cover body (20) can be placed above a table and surrounded by the table to form a fresh-keeping cavity; the housing (10) is arranged above the cover body (20); The casing (10) is provided with a circuit board (11), a semiconductor cooling and heating unit (12) and an internal circulation fan (13) electrically connected to the circuit board (11); the casing (10) is provided with a lower chamber (30), and the lower chamber (30) is located in the fresh-keeping cavity; a plurality of internal circulation air outlet holes (31) are provided on the side of the lower chamber (30), and an internal circulation air inlet hole (32) is provided below the lower chamber (30); the internal circulation fan (13) can inhale air from the internal circulation air inlet hole (32) and send air toward the internal circulation air outlet hole (31); the semiconductor cooling and heating unit (12) can cool or heat the lower chamber (30).

2. The heat-insulating and fresh-keeping food cover according to claim 1, characterized in that: The cover body (20) is provided with an upper chamber (40), and the upper chamber (40) is provided with an external circulation fan (14) electrically connected to the circuit board (11); the upper chamber (40) is provided with an external circulation air inlet hole (42) and an external circulation air outlet hole (41).

3. The heat-insulating and fresh-keeping food cover according to claim 2, characterized in that: The housing (10) comprises an upper shell (15), a partition (16) and a lower shell (17); the upper shell (15) and the partition (16) are arranged to form the upper chamber (40), and the lower shell (17) and the partition (16) are arranged to form the lower chamber (30).

4. The heat-insulating and fresh-keeping food cover according to claim 3, characterized in that: The upper shell (15) and the lower shell (17) are arranged symmetrically relative to the partition (16).

5. The heat-insulating and fresh-keeping food cover according to claim 3, characterized in that: The semiconductor cooling and heating unit (12) is embedded in the partition (16); heat exchange fins (18) are arranged on the upper and lower sides of the semiconductor cooling and heating unit (12); the external circulation fan (14) is arranged close to the heat exchange fin (18) on the upper side, and the internal circulation fan (13) is arranged close to the heat exchange fin (18) on the lower side.

6. The heat-insulating and fresh-keeping food cover according to claim 2, characterized in that: The circuit board (11) is arranged in the upper chamber (40).

7. The heat-insulating and fresh-keeping food cover according to claim 1, characterized in that: The cover body (20) comprises a cover cloth (21) and a cover frame (22); the housing (10) is provided with a telescopic channel (19), and a telescopic cylinder (50) is passed through the telescopic channel (19); the telescopic cylinder (50) and the cover frame (22) are provided with a plurality of connecting rods (51); during the telescopic movement of the telescopic cylinder (50) relative to the housing (10), the cover frame (22) can be switched between a retracted state and an expanded state through the connecting rods (51).

8. The heat-insulating and fresh-keeping food cover according to claim 7, characterized in that: The connecting rod (51) is evenly arranged on the telescopic cylinder (50) along the circumferential direction; and the two ends of the connecting rod (51) are respectively hinged to the telescopic cylinder (50) and the cover frame (22).

9. The heat-insulating and fresh-keeping food cover according to claim 7, characterized in that: The telescopic cylinder (50) is provided with a limiting step (52), and the limiting step (52) can abut against the end of the telescopic channel (19).

10. The heat-insulating and fresh-keeping food cover according to claim 7, characterized in that: The telescopic cylinder (50) is provided with an elastic limiting member (53), and the elastic limiting member (53) can abut against the end of the telescopic channel (19); pressing the elastic limiting member (53) can release the abutment between the elastic limiting member (53) and the telescopic channel (19).

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