CN218154990U

CN218154990U - Domestic fresh freezer that gives birth to of low temperature stirling

Info

Publication number: CN218154990U
Application number: CN202222227439.0U
Authority: CN
Inventors: 汪德政; 王冬冬; 朱国海
Original assignee: Ningbo Juxin Cryogenic Technology Co ltd
Current assignee: Ningbo Juxin Cryogenic Technology Co ltd
Priority date: 2022-08-24
Filing date: 2022-08-24
Publication date: 2022-12-27
Anticipated expiration: 2032-08-24

Abstract

The utility model discloses a low-temperature Stirling household fresh refrigerator, which comprises a refrigerator body, wherein a refrigerating cavity and a support frame are arranged in the refrigerator body side by side; the Stirling cooler is arranged in the support frame, a heat-preservation cold head is arranged at the top of the Stirling cooler, and a cold conducting pipe connected with the heat-preservation cold head is arranged on the outer side of the cold storage cavity in a surrounding mode; the heat insulation structure is arranged between the refrigerating cavity and the inner side wall of the cabinet body; and the box cover is arranged on the upper side of the refrigerating cavity, and one side of the box cover is connected with the cabinet body in a turnover mode. The utility model discloses can solve the problem of the unable ultra-low temperature refrigeration food of current domestic bright freezer that gives birth to have environmental protection and energy saving.

Description

Domestic fresh refrigerator that gives birth to of low temperature stirling

Technical Field

The utility model relates to a domestic fresh food freezer application specifically is a domestic fresh food freezer that gives birth to of low temperature stirling.

Background

The existing domestic fresh refrigerator mostly adopts the compressor to refrigerate, the refrigerating temperature of the compressor is limited, the low temperature of minus 70 ℃ cannot be achieved frequently, the preservation time of the fresh refrigerator is limited, the fresh refrigerator cannot be preserved for a long time, the heat preservation effect of the existing domestic fresh refrigerator cannot meet the requirement of ultra-low temperature refrigeration, and the control of the temperature cannot be accurate and constant.

SUMMERY OF THE UTILITY MODEL

The utility model provides a bright freezer is given birth to low temperature stirling family expenses can solve the problem of the unable super low temperature cold-stored food of current domestic bright freezer of giving birth to.

In order to achieve the above object, the utility model provides a following technical scheme: a low-temperature Stirling household fresh refrigerator comprises a refrigerator body, wherein a refrigerating cavity and a support frame are arranged in the refrigerator body side by side; the Stirling cooler is arranged in the support frame, a heat-preservation cold head is arranged at the top of the Stirling cooler, and a cold conducting pipe connected with the heat-preservation cold head is arranged on the outer side of the cold storage cavity in a surrounding mode; the heat insulation structure is arranged between the refrigerating cavity and the inner side wall of the cabinet body; the box cover is arranged on the upper side of the refrigerating cavity, one side of the box cover is connected with the cabinet body in an overturning manner, the Stirling refrigerator can effectively refrigerate the refrigerating cavity, the temperature in the refrigerating cavity can reach 70-DEG C biological level fresh-keeping refrigeration, and the heat insulation and preservation structure can play a good heat preservation effect, so that the energy conservation of the household fresh-keeping refrigerator can reach 70%.

Preferably, the heat insulation and preservation structure comprises a glass fiber board arranged on the outer side of the refrigerating cavity, a cold guide pipe is embedded in the glass fiber board, a first glass wool heat insulation layer is arranged on the outer side of the glass fiber board, a polyurethane foam layer is arranged on the outer side of the first glass wool heat insulation layer, the glass fiber board, the first glass wool heat insulation layer and the polyurethane foam layer can achieve a multi-layer heat insulation effect, the cold guide effect, the consistency of an internal temperature zone and the uniformity of temperature are optimized, the heat preservation coefficient of the Stirling refrigerator at the low temperature of minus 40 ℃ and minus 80 ℃ is improved by 30%, the cooling time is improved by 35%, and the energy consumption of electric energy is 35%.

Meanwhile, the box cover is internally provided with a second glass wool heat insulation layer, so that the top of the refrigeration cavity can be insulated, and the heat insulation effect is improved.

Preferably, the cold guide pipe is obliquely arranged on each outer side wall of the refrigerating cavity, so that the refrigerating area of the cold guide pipe is larger, and the refrigerating of the refrigerating cavity is more uniform.

Preferably, the case lid and the cabinet body are connected through the turnover hinge assembly, the turnover hinge assembly comprises a hinge base connected with the cabinet body, a rotating seat hinged with the hinge base and a connecting plate connected with the rotating seat, the connecting plate is connected and fixed with the case lid, and the case lid with larger mass can be supported through the turnover hinge assembly.

Preferably, the cross section of the hinge base is U-shaped, the side walls of the two sides of the upper end of the hinge base are connected with the rotating base through a rotating shaft, the side walls of the two sides of the hinge base are provided with limiting arc-shaped grooves around the rotating shaft, the rotating base is provided with a sliding block embedded into the corresponding limiting arc-shaped grooves, the lower end of the hinge base is provided with at least one U-shaped groove 0 side by side, the middle of the hinge base is provided with at least one mounting hole, the upper side of the mounting hole is communicated with an adjusting groove, the position of the hinge base can be adjusted as required, and the limiting arc-shaped grooves can limit the rotating angle of the box cover.

Preferably, a reinforcing plate is vertically arranged on the side wall of the cold storage cavity, facing the Stirling cooler, a limiting groove is obliquely arranged on the reinforcing plate, the cold guide pipe is embedded into the limiting groove, and the limiting groove can limit the cold guide pipe to prevent the cold guide pipe from sliding downwards.

Compared with the prior art, the beneficial effects of the utility model are that:

the Stirling cooler is used as a refrigerating source, so that the temperature in the refrigerating cavity can reach-70 ℃ for biological fresh-keeping and refrigeration, the temperature control of the refrigerating cavity is more accurate and stable, the biological fresh-keeping constant-temperature constant-humidity function is realized, and the biological activity of food materials and the timeliness of the moisture freshness of cells are guaranteed to the maximum extent.

By adopting the multilayer board composite heat-insulating material, the cold conduction effect, the consistency of an internal temperature area and the uniformity of temperature are optimized, the heat preservation coefficient of the Stirling refrigerator at low temperature of minus 40 ℃ and minus 80 ℃ is improved by 30%, the cooling time is improved by 35%, and the energy consumption of electric energy is reduced by 35%.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a front sectional view of the structure of the present invention;

FIG. 3 is the internal structure view of the utility model with the cabinet body removed;

fig. 4 is a block diagram of the flip hinge assembly of the present invention.

Reference numerals:

1. the refrigerator comprises a cabinet body, 11 parts of a cold guide pipe, 12 parts of a hinge base, 13 parts of a rotating seat, 14 parts of a connecting plate, 15 parts of a rotating shaft, 16 parts of a sliding block, 17 parts of an adjusting groove, 18 parts of a limiting arc-shaped groove, 19 parts of a mounting hole, 2 parts of a box cover, 20 parts of a U-shaped groove, 21 parts of a second glass wool heat insulation layer, 22 parts of a limiting groove, 23 parts of a reinforcing plate, 3 parts of an upper shell cover, 4 parts of a Stirling cooler, 5 parts of a heat insulation cold head, 6 parts of a support frame, 7 parts of a cold storage cavity, 8 parts of a glass fiber plate, 9 parts of a first glass wool heat insulation layer, 10 parts of a polyurethane foam layer.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

As shown in fig. 1-4, the utility model discloses a solve the problem of the unable super low temperature refrigeration food of current domestic fresh food freezer, provide following technical scheme: a low-temperature Stirling household fresh refrigerator comprises a refrigerator body 1, wherein a refrigerating cavity 7 and a support frame 6 are arranged in the refrigerator body 1 side by side; the Stirling cooler 4 is arranged in the support frame 6, the heat-preservation cold head 5 is arranged at the top of the Stirling cooler 4, and the cold guide pipe 11 connected with the heat-preservation cold head 5 is arranged on the outer side of the refrigerating cavity 7 in a surrounding mode; the heat insulation structure is arranged between the refrigerating cavity 7 and the inner side wall of the cabinet body 1; case lid 2 sets up the upside in cold-stored chamber 7, its one side and the upset of the cabinet body are connected, and the cold machine 4 of stirling can effectively refrigerate cold-stored chamber 7, makes the temperature in the cold-stored chamber 7 can reach 70 degrees biological grade fresh-keeping freezing below zero, and adiabatic insulation construction can play fine heat preservation effect to the energy-conservation that makes domestic fresh-keeping freezer can reach 70%.

Specifically, the cold storage chamber 7 can adopt aluminium system material to make, lead cold effectual, the cold head 5 that keeps warm has the heat preservation effect, can reduce the diffusion of the cold volume of the cold head of stirling cooler 4, stirling cooler 4 can adopt free piston stirling refrigerator, it is the main equipment that is used for low temperature refrigeration, can realize ultra-low temperature refrigeration for ordinary compressor, and the volume ratio is small, current free piston stirling refrigerator is the refrigeration principle in service utilizes magnetic force to promote the piston and does reciprocating motion in the cylinder, the acting of piston compression gaseous medium promotion displacer is with reaching the stirling compression, the inflation, release heat, refrigerated circulation, free piston stirling refrigerator's specific structure belongs to prior art, this is not being repeated. Support frame 6 can effectively support the cold machine 4 of stirling fixedly, and cap 3 is gone up to the top installation of support frame 6 in the detachable, maintains the installation to the cold machine 4 of stirling and heat preservation cold head 5 after the convenient dismantlement. The cold conducting pipe 11 is a red copper cold conducting pipe, and CO2 or ethane is filled in the cold conducting pipe to be used as a refrigerant for conduction.

In this embodiment, as a specific embodiment of the heat insulation structure, the heat insulation structure includes a glass fiber plate 8 disposed outside a refrigeration cavity 7, a cold conduction pipe 11 is embedded in the glass fiber plate 8, a first glass wool heat insulation layer 9 is disposed outside the glass fiber plate 8, a polyurethane foam layer 10 is disposed outside the first glass wool heat insulation layer 9, the thermal conductivity coefficient of the glass fiber plate 8 is low, the first glass wool heat insulation layer 9 and the polyurethane foam layer 10 can greatly improve the heat insulation effect, the consistency of the cold conduction effect and the internal temperature zone and the uniformity of the temperature are optimized, the heat insulation coefficient of the stirling refrigerator at the low temperature of-40 degrees and-80 degrees is improved by 30%, the cooling time is improved by 35%, and the energy consumption of the stirling refrigerator is reduced by 35%.

Meanwhile, a second glass wool heat insulation layer 21 is arranged inside the box cover 2, so that the top of the refrigerating cavity 7 can be insulated, and the heat insulation effect is improved.

In this embodiment, the cold guide pipe 11 is obliquely arranged on each outer side wall of the refrigerating chamber 7, so that the refrigerating area of the cold guide pipe 11 is larger, and the refrigeration of the refrigerating chamber 7 is more uniform.

As a connection mode between the box cover 2 and the cabinet body 1, as shown in fig. 3-4, the box cover 2 is connected with the cabinet body 1 by a flip hinge assembly, the flip hinge assembly includes a hinge base 12 connected with the cabinet body 1, a rotating base 13 hinged with the hinge base 12, and a connecting plate 14 connected with the rotating base 13, the connecting plate 14 is connected and fixed with the box cover 2, and the box cover 2 with a larger mass can be supported by the flip hinge assembly.

The cross section of the hinge base 12 is U-shaped, the side walls on two sides of the upper end of the hinge base are connected with the rotating base 13 through the rotating shaft 15, the side walls on two sides of the hinge base 12 are provided with limiting arc-shaped grooves 18 around the rotating shaft 15, the rotating base 13 is provided with a sliding block 16 embedded into the corresponding limiting arc-shaped grooves 18, the lower end of the hinge base 12 is provided with at least one U-shaped groove 20 side by side, the middle of the hinge base 12 is provided with at least one mounting hole 19, the upper side of the mounting hole 19 is communicated with an adjusting groove 17, the position of the hinge base 12 can be adjusted as required, and the limiting arc-shaped grooves 18 can limit the rotating angle of the box cover 2.

In this embodiment, a reinforcing plate 23 is vertically arranged on the side wall of the refrigerating chamber 7 facing the stirling cooler 4, a limiting groove 22 is obliquely arranged on the reinforcing plate 23, the cold guide tube 11 is embedded into the limiting groove 22, and the limiting groove 22 can limit the cold guide tube 11 to prevent the cold guide tube 11 from sliding downwards.

It should be noted that all directional indicators (such as up, down, left, right, front, and back) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, and the like in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless expressly specified otherwise.

In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In addition, the technical solutions between the embodiments of the present invention can be combined with each other, but it is necessary to be able to be realized by a person having ordinary skill in the art as a basis, and when the technical solutions are contradictory or cannot be realized, the combination of such technical solutions should be considered to be absent, and is not within the protection scope of the present invention.

Claims

1. A low temperature Stirling domestic fresh-keeping freezer, comprising:

the refrigerator comprises a cabinet body (1), wherein a refrigerating cavity (7) and a supporting frame (6) are arranged in the cabinet body (1) side by side;

the Stirling cooler (4) is installed inside the supporting frame (6), a heat-preservation cold head (5) is installed at the top of the Stirling cooler (4), and a cold guide pipe (11) connected with the heat-preservation cold head (5) is arranged on the outer side of the cold storage cavity (7) in a surrounding mode;

the heat insulation structure is arranged between the refrigerating cavity (7) and the inner side wall of the cabinet body (1);

the box cover (2) is arranged on the upper side of the refrigerating cavity (7), and one side of the box cover is connected with the cabinet body (1) in a turnover mode.

2. The low temperature stirling household fresh food cooler of claim 1 wherein: the heat insulation structure comprises a glass fiber plate (8) arranged on the outer side of a refrigerating cavity (7), a cold guide pipe (11) is embedded into the glass fiber plate (8), a first glass wool heat insulation layer (9) is arranged on the outer side of the glass fiber plate (8), and a polyurethane foaming layer (10) is arranged on the outer side of the first glass wool heat insulation layer (9).

3. The low-temperature stirling household fresh-keeping cooler of claim 2, wherein: and a second glass wool heat insulation layer (21) is arranged in the box cover (2).

4. The low temperature stirling household fresh food cooler of claim 1 wherein: the cold guide pipe (11) is obliquely arranged on each outer side wall of the refrigerating cavity (7).

5. The low temperature stirling household fresh food cooler of claim 1 wherein: the cabinet cover (2) is connected with the cabinet body (1) through the turnover hinge assembly, the turnover hinge assembly comprises a hinge base (12) connected with the cabinet body (1), a rotating seat (13) hinged with the hinge base (12) and a connecting plate (14) connected with the rotating seat (13), and the connecting plate (14) is connected and fixed with the cabinet cover (2).

6. The low-temperature stirling household fresh-keeping refrigerator of claim 5 wherein: hinge base (12) cross-section be the U-shaped, link to each other with rotation seat (13) through pivot (15) on its upper end both sides lateral wall, the both sides lateral wall of hinge base (12) on be provided with spacing arc wall (18) round pivot (15), rotation seat (13) on be provided with slider (16) of embedding in the spacing arc wall (18) that corresponds, the lower extreme of hinge base (12) be provided with at least one U-shaped groove (20) side by side, the middle part of hinge base (12) be provided with at least one mounting hole (19), the upside intercommunication of mounting hole (19) be provided with adjustment tank (17).

7. The low temperature stirling household fresh food cooler of claim 1 wherein: the side wall of one side of the refrigerating cavity (7) facing the Stirling cooler (4) is vertically provided with a reinforcing plate (23), the reinforcing plate (23) is obliquely provided with a limiting groove (22), and the cold guide pipe (11) is embedded into the limiting groove (22).