CN219776085U - Heat exchange inner box device and refrigeration equipment - Google Patents

Abstract

The present disclosure relates to a heat exchange inner box device and refrigeration equipment, wherein the heat exchange inner box device includes: a housing (1) comprising a first plate (11), a second plate (12) and a third plate (13), wherein the first plate (11) and the second plate (12) are arranged oppositely, the third plate (13) is connected to respective first ends of the first plate (11) and the second plate (12), and a channel for articles to enter and exit the housing (1) is formed between respective second ends of the first plate (11) and the second plate (12); a first refrigerant flow path (14) is arranged in the plate of the accommodating shell (1), the first refrigerant flow path (14) is provided with a first opening (141) and a second opening (142), the first opening (141) is used for supplying refrigerant to flow in, and the second opening (142) is used for supplying the refrigerant to flow out.

Description

Heat exchange inner box device and refrigeration equipment

Technical Field

The disclosure relates to the technical field of refrigeration equipment, in particular to a heat exchange inner box device and refrigeration equipment.

Background

The ultralow temperature preservation box, the household refrigerator, the showcase, the commercial refrigerator and the like commonly adopt a direct cooling refrigeration mode, the heat exchange inner box supports the inner box and the copper pipe, and the copper pipe is required to be wound on the wall surface of the inner box, so that the copper pipe and the inner box are poor in laminating performance, and the heat exchange effect is generally low; because winding evaporating pipe is generally longer, manufacturing cost is high, and copper pipe laminating is when relatively poor, can generally produce local cavitation, influences the product heat preservation effect.

Disclosure of Invention

The embodiment of the disclosure provides a heat exchange inner box device and refrigeration equipment, which can improve the heat exchange effect of an inner box.

According to a first aspect of the present disclosure, there is provided a heat exchange inner box device comprising:

the accommodating shell comprises a first plate, a second plate and a third plate, wherein the first plate and the second plate are oppositely arranged, the third plate is connected to respective first ends of the first plate and the second plate, and a channel for articles to enter and exit the accommodating shell is formed between respective second ends of the first plate and the second plate; the plate of holding the shell is equipped with first refrigerant flow path, and first refrigerant flow path has first opening and second opening, and first opening is used for supplying the refrigerant inflow, and the second opening is used for supplying the refrigerant outflow.

In some embodiments, the first plate, the second plate, and the third plate are an integrally formed structure.

In some embodiments, the first, second and third plates each have a first refrigerant flow path disposed therein.

In some embodiments, the first refrigerant flow path includes a plurality of first flow sections and a plurality of second flow sections, the plurality of first flow sections being disposed horizontally, and two adjacent first flow sections being in communication through a curved second flow section.

In some embodiments, the housing case includes a first region and a second region in a height direction, the first region being located above the second region, and a distance between two adjacent first flow path sections in the first region increases in a trend from top to bottom.

In some embodiments, the spacing between adjacent two first flow segments within the second region is less than the spacing between adjacent two first flow segments at the bottom of the first region.

In some embodiments, the heat exchange inner box apparatus further comprises:

a fourth plate connected to the first end of the housing adjacent to the channel; and

a fifth plate connected to the second end of the housing adjacent to the channel;

the accommodating shell, the fourth plate and the fifth plate form an accommodating cavity together, a second refrigerant flow path is arranged in at least one of the fourth plate and the fifth plate, the second refrigerant flow path comprises a third opening and a fourth opening, the third opening is communicated with the first opening, and the fourth opening is used for supplying refrigerant to flow in; and/or the third opening is communicated with the second opening, and the fourth opening is used for flowing out the cooling medium.

In some embodiments, the heat exchange inner box apparatus further comprises:

the connecting pipe is used for enabling the second refrigerant flow path to be communicated with the first refrigerant flow path, the first end of the connecting pipe is fixedly connected with the first opening, and the second end of the connecting pipe is fixedly connected with the third opening; and/or the first end of the connecting pipe is fixedly connected with the first opening, and the second end of the connecting pipe is fixedly connected with the third opening.

In some embodiments, the first refrigerant flow path and the second refrigerant flow path are each formed by inflation of the inner plate and the outer plate.

In some embodiments, at least one of the inner and outer plates is a stainless steel plate.

In some embodiments, the inner plate is a stainless steel plate and the outer plate is an aluminum plate, and the first and second coolant flow passages have a greater projection height on one side of the aluminum plate than on one side of the stainless steel plate.

In some embodiments, the first opening is vertically higher than the second opening.

According to a second aspect of the present disclosure, a refrigeration apparatus is provided, comprising the heat exchange inner box device of the above embodiment.

In some embodiments, the refrigeration device is an ultra-low temperature storage case.

In some embodiments, the refrigeration apparatus further comprises a condenser and a compressor, the condenser and the compressor being located at the bottom of the heat exchange inner box arrangement.

Based on the above-mentioned technical scheme, the heat transfer inner box device of this disclosed embodiment is through the inboard with coolant flow path integration to holding the shell, and the inner box is direct with coolant heat transfer when playing the supporting role, can simplify the inner box structure, reduce manufacturing cost, increase the inner box volume, avoid the production of local cavitation, improve the heat transfer effect, promote product performance.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure, illustrate and explain the present disclosure, and together with the description serve to explain the present disclosure. In the drawings:

FIG. 1 is an exploded view of a first view angle of some embodiments of the heat exchange inner box apparatus of the present disclosure;

FIG. 2 is a schematic diagram of a structure of a second view of some embodiments of the heat exchange inner box apparatus of the present disclosure;

FIG. 3A is a right side view of a first view angle of some embodiments of the heat exchange inner box apparatus of the present disclosure;

FIG. 3B is a front view of a first view angle of some embodiments of the heat exchange inner box apparatus of the present disclosure;

FIG. 3C is a top view of a first view of some embodiments of the heat exchange inner box apparatus of the present disclosure;

FIG. 4 is a cross-sectional view A-A of FIG. 3B;

fig. 5 is an enlarged view of the flow passage section at B in fig. 4.

Description of the reference numerals

1. A housing case; 2. a connecting pipe; 3. a capillary tube is fed; 4. a fourth plate; 5. a fifth plate; 6. a capillary tube;

11. a first plate; 12. a second plate; 13. a third plate; 14. a first refrigerant flow path; 42. a second refrigerant flow path;

101. a first region; 102. a second region; 111. an inner plate; 112. an outer plate; 131. a first layer; 132. a second layer; 133. a third layer; 134. a fourth layer; 141. a first opening; 142. a second opening; 143. a first flow path section; 144. a second flow path segment; 423. a third opening; 424. and a fourth opening.

Detailed Description

The present disclosure is described in detail below. In the following paragraphs, the different aspects of the embodiments are defined in more detail. Aspects so defined may be combined with any other aspect or aspects unless explicitly stated to be non-combinable. In particular, any feature or features may be combined with one or more other features may be desired and advantageous.

The terms "first," "second," and the like in this disclosure are merely for convenience of description to distinguish between different constituent components having the same name, and do not denote a sequential or primary or secondary relationship.

In the description of the present disclosure, it should be understood that the directions or positional relationships indicated by the terms "inner", "outer", "upper" and "lower", etc., are defined based on the housing case, the heat exchange inner case or the refrigerant flow path, etc., are merely for convenience of describing the present disclosure, and are not intended to indicate or imply that the apparatus to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the scope of the present disclosure.

The ultralow temperature preservation box can be used for ultralow temperature preservation of vaccines, chemical reagents, biological samples and the like, the refrigeration temperature can reach-70 ℃ to-90 ℃, for example, the preservation temperature of the pareil vaccine is about-75 ℃. Because of the special large cooling capacity requirement of the ultralow temperature preservation box, copper pipes (evaporators) are wound on the wall surface of the inner box, and the temperature of the whole inner box is uniform by matching with an air supply device. The pipelines used by the ultralow temperature preservation box are relatively long, the winding pipe on the existing product is the shortest forty meters, and some pipelines are close to hundred meters. The copper pipe and the inner box have poor laminating performance, so that the problems of local cavitation and the like can be solved, the heat exchange effect of the inner box is reduced, and the longer copper pipe can also improve the manufacturing cost of the inner box.

First, the present disclosure provides a heat exchange inner box device, as shown in fig. 1 to 3C, including: the accommodating case 1 comprises a first plate 11, a second plate 12 and a third plate 13, wherein the first plate 11 and the second plate 12 are oppositely arranged, the third plate 13 is connected with respective first ends of the first plate 11 and the second plate 12, and a channel for articles to enter and exit the accommodating case 1 is formed between respective second ends of the first plate 11 and the second plate 12; a first refrigerant flow path 14 is provided in the plate of the housing case 1, the first refrigerant flow path 14 has a first opening 141 and a second opening 142, the first opening 141 is used for inflow of refrigerant, and the second opening 142 is used for outflow of refrigerant.

Specifically, the first plate 11, the second plate 12 and the third plate 13 form a U-shaped structure, and can function as a main body skeleton of the heat exchange inner box device. Alternatively, the article placed in the housing case 1 may be a test tube or the like. Alternatively, the third plate 13 may be perpendicular to the first plate 11 and the second plate 12, and the third plate 13 may be at other angles to the first plate 11 and the second plate 12.

Specifically, the first refrigerant flow path 14 is located in the plate of the accommodating case 1, and is integrated with the plate of the accommodating case 1 (equivalent to being integrated with the supporting plate of the conventional inner case), and the refrigerant directly contacts with the wall surface of the inner case for heat exchange, so that the heat exchange effect can be improved. Specifically, the housing case 1 also plays a supporting role while functioning as an evaporator. Alternatively, the housing case 1 may function as an evaporator of a low temperature stage of the cascade refrigeration cycle, and the housing case 1 may also function as an evaporator of a conventional refrigeration cycle. Alternatively, the housing case 1 may employ a stainless steel plate, an aluminum plate, or the like.

Alternatively, in case the housing case 1 serves as a low temperature stage evaporator of the cascade refrigeration cycle, the first opening 141 may be connected to the capillary tube inlet 3, the capillary tube inlet 3 being connected to the capillary tube 6, the capillary tube 6 being a low temperature stage capillary tube for throttling.

Alternatively, the first refrigerant flow path 14 may be integrated into the plate of the housing case 1 by any means, for example, may be integrated into the plate of the housing case 1 by an integral molding method, or may be integrated into the plate of the housing case 1 by a blow-up method or the like. Specifically, the first refrigerant flow path 14 is provided in at least one of the first plate 11, the second plate 12, and the third plate 13. Alternatively, the first refrigerant flow path 14 may be provided only in the third plate 13, or may be provided in the first plate 11, the second plate 12, and the third plate 13 at the same time. Alternatively, the first refrigerant flow path 14 may be horizontally, vertically or obliquely disposed.

Alternatively, the first plate 11, the second plate 12 and the third plate 13 may be separately manufactured and then fixedly installed, or may be formed by bending using a single plate. Alternatively, the passage for the articles to enter and exit the housing shell 1 may be in a horizontal direction, i.e. the opening of the heat exchange inner box means is in a horizontal direction, e.g. the opening is directed towards the front or the side; the passage for the articles to enter and exit the housing shell 1 may also be in a vertical direction, i.e. the opening of the heat exchange inner box arrangement is in a vertical direction, e.g. the opening is directed towards the top. Alternatively, the first opening 141 and the second opening 142 may be provided at any position of the receiving case 1, for example, may be provided at the top of the receiving case 1, or may be provided at the middle or bottom of the receiving case 1.

In the heat exchange inner box device of the embodiment, the first refrigerant flow path 14 is integrated into the plate of the accommodating shell 1, and the accommodating shell 1 performs the supporting function and simultaneously the wall surface directly exchanges heat with the refrigerant, so that the inner box structure can be simplified, the manufacturing cost can be reduced, the inner box volume can be increased, and the heat exchange effect can be improved; meanwhile, by avoiding arranging copper pipe lines in the inner box, the problem of poor laminating performance of the copper pipe and the inner box can be avoided, the generation of local cavitation is avoided, the heat preservation effect is improved, and further the product performance is improved.

In some embodiments, as shown in fig. 1 and 2, the first plate 11, the second plate 12, and the third plate 13 are an integrally formed structure.

Specifically, during the manufacture of the first plate 11, the second plate 12 and the third plate 13, the first refrigerant flow path 14 is also integrated into the plates at the same time. Alternatively, the first plate 11, the second plate 12 and the third plate 13 may be integrally formed by a mold, or may be formed by bending a flat plate.

In this embodiment, the first plate 11, the second plate 12 and the third plate 13 are integrally formed, so that the steps for manufacturing the heat exchange inner case can be simplified, and the manufacturing cost can be reduced.

In some embodiments, as shown in fig. 1 to 3C, the first plate 11, the second plate 12, and the third plate 13 are each provided with a first refrigerant flow path 14 therein.

Alternatively, in the case where the heat exchange inner box device is applied to an ultra-low temperature preservation box or the like, the flow path lengths of the first plate 11, the second plate 12, and the third plate 13 in the housing case 1 may amount to 35.2 meters. Alternatively, the first refrigerant flow path 14 may be arranged horizontally, vertically, or obliquely.

In this embodiment, the first refrigerant flow path 14 is provided in three plates, so that the accommodating chamber of the accommodating case 1 can be surrounded by the refrigerant flow paths in a plurality of directions, and the accommodating case 1 can provide a larger refrigerating capacity; moreover, when satisfying the refrigeration demand such as ultralow temperature preservation case, need not to set up the fan, just can realize holding intracavity temperature even, solved ultralow temperature refrigeration case operating temperature and low the problem that leads to the fan to be difficult to normal work.

In some embodiments, as shown in fig. 1 to 3C, the first refrigerant flow path 14 includes a plurality of first flow sections 143 and a plurality of second flow sections 144, the plurality of first flow sections 143 being disposed horizontally, and two adjacent first flow sections 143 being communicated by the curved second flow section 144.

Specifically, the first flow path section 143 penetrates the first plate 11, the second plate 12, and the third plate 13 at the same time, and the second flow path section 144 is provided only in the first plate 11 and the second plate 12.

Specifically, the refrigerant pressure is greatly influenced by gravity, and the influence of gravity on the refrigerant pressure can be reduced by horizontally arranging the refrigerant flow path. Specifically, the length of the horizontally disposed first flow path section 143 is much greater than the length of the curved second flow path section 144. The adjacent two first flow path sections 143 are disposed at intervals in the vertical direction, and the second flow path section 144 is connected to the same end of the adjacent two first flow path sections 143, for example, the second flow path section 144 may be disposed in a U shape.

According to the embodiment, the first flow section 143 is horizontally arranged transversely, so that the gravity influence on the pressure of the refrigerant in the refrigerant flowing process can be reduced, the stability of the refrigerant flowing is improved, the heat exchange effect is improved, and the product performance is improved.

In some embodiments, as shown in fig. 1 to 3C, the accommodating case 1 includes a first region 101 and a second region 102 in the height direction, the first region 101 is located above the second region 102, and in the first region 101, the interval between two adjacent first flow sections 143 tends to increase from top to bottom.

Specifically, based on the principle of heat transfer, the cold air sinks and the hot air rises in the heat exchange inner box device, so that the space between two adjacent first flow sections 143 is smaller and the layout is denser at the upper part of the first area 101, so as to meet the requirement of larger refrigerating capacity; in the lower part of the first region 101, the distance between two adjacent first flow path sections 143 is larger, and the layout is more sparse.

Alternatively, the interval between two adjacent first flow sections 143 may be sequentially increased, or may be increased in groups at intervals, for example, the first area 101 may be divided into three groups, each group may correspond to each layer of article storage area of the heat exchange inner box device, the number of the first flow sections 143 respectively provided in each group is five, four and four, the interval between adjacent first flow sections 143 in each group is equal, and the interval between adjacent first flow sections 143 in the first group to the third group is sequentially increased.

Specifically, the first region 101 and the second region 102 of the receiving case 1 may correspond to layering of the heat exchange inner case device, for example, the first region 101 may correspond to a first layer 131, a second layer 132, and a third layer 133 of the heat exchange inner case device from top to bottom, and the second region 102 may correspond to a fourth layer 134 of the heat exchange inner case device at the lowermost side. More specifically, the first layer 131 includes five first flow path sections 143, the second layer 132 includes four first flow path sections 143, the third layer 133 includes four first flow path sections 143, the pitches between two adjacent first flow path sections 143 within each layer are equal, the pitch of the first layer 131 is smaller than the pitch of the second layer 132, and the pitch of the second layer 132 is smaller than the pitch of the third layer 133.

According to the embodiment, the flow path spacing is increased from top to bottom in the first area 101, and the refrigerant flow paths can be reasonably distributed according to the refrigerating capacity demand, so that the larger refrigerating capacity demand on the upper part of the first area 101 can be met, the arrangement quantity of the refrigerant flow paths can be reduced on the lower part of the first area 101, the production cost is saved, and the temperature uniformity in the accommodating cavity is realized, and meanwhile, the low-cost production and manufacturing are realized.

In some embodiments, as shown in fig. 4, the heat exchange inner box device is divided into four layers, namely, a first layer 131, a second layer 132, a third layer 133 and a fourth layer 134 from top to bottom, wherein the height of each layer is the same, and the height of each layer depends on factors such as the height of an article to be placed and the bearing capacity.

In some embodiments, as shown in fig. 1-4, the spacing between adjacent two first flow segments 143 within the second region 102 is less than the spacing between adjacent two first flow segments 143 at the bottom of the first region 101.

Specifically, the spacing between two adjacent first flow sections 143 in the second area 102 is equal, the second area 102 may correspond to the fourth layer 134 where the heat exchange inner box device is located at the lowermost position, the fourth layer 134 includes four first flow sections 143, more specifically, the spacing of the fourth layer 134 is smaller than the spacing of the third layer 133, and more specifically, the first flow sections 143 are densely arranged in the second area 102 to provide a relatively larger cooling capacity.

Specifically, when the refrigerant flows from top to bottom, the refrigerant flows to the bottom area of the heat exchange inner box device, the superheat degree of the refrigerant increases, the heat exchange effect becomes poor, and an encryption pipeline is needed. More specifically, the smaller space in the second area 102 may further reduce the influence of other high temperature devices outside the heat exchange inner box device on the temperature in the box, for example, in the case that the heat exchange inner box device is applied to an ultralow temperature preservation box, a refrigerating unit (a refrigerating component such as a condenser and a compressor is arranged at the bottom of the ultralow temperature preservation box) is placed at the bottom of the ultralow temperature preservation box, the temperature of the refrigerating unit is higher (for example, the hot air of a fan heater can reach about 60 ℃), the temperature in the box is about-86 ℃, the heat exchange temperature difference is large, and even if the thickness of the heat insulation layer of the box reaches 140mm, the temperature of the refrigerating unit still can affect the temperature in the box in a heat conduction manner.

The heat exchange inner box device of the embodiment can provide relatively larger refrigerating capacity by arranging the denser first flow section 143 in the second area 102, can improve the heat exchange effect of the refrigerant flowing to the bottom area, and can reduce the influence of other high-temperature equipment outside the box body on the temperature in the box body due to heat conduction, thereby improving the heat exchange effect and the heat preservation effect and improving the product performance.

In some embodiments, as shown in fig. 1 to 3C, the heat exchange inner box device further includes:

a fourth plate 4 connected to a first end of the housing 1 adjacent to the channel; and

a fifth plate 5 connected to a second end of the receiving case 1 adjacent to the passage;

wherein, the accommodating case 1, the fourth plate 4 and the fifth plate 5 together form an accommodating cavity, at least one of the fourth plate 4 and the fifth plate 5 is provided with a second refrigerant flow path 42, the second refrigerant flow path 42 comprises a third opening 423 and a fourth opening 424, the third opening 423 is communicated with the first opening 141, and the fourth opening 424 is used for supplying refrigerant to flow in; and/or the third opening 423 communicates with the second opening 142, and the fourth opening 424 is for the outflow of the refrigerant.

Specifically, the fourth plate 4, the fifth plate 5 and the housing case 1 are fixedly connected, for example, by fasteners such as rivets, screws, or the like. Alternatively, the fourth plate 4 and the fifth plate 5 may be stainless steel plates, aluminum plates, or the like. Specifically, the second refrigerant flow path 42 is located in the fourth plate 4 and/or the fifth plate 5, and is integrated with the plates, so that the refrigerant directly contacts the inner wall surface to exchange heat, and the heat exchange effect can be improved. Specifically, the third opening 423 communicates with the first opening 141 and/or the third opening 423 communicates with the second opening 142, i.e., the second refrigerant flow path 42 and the first refrigerant flow path 14.

Specifically, after the fourth plate 4 and the fifth plate 5 are mounted with the housing case 1, the two interconnected openings should be disposed adjacently, i.e., the third opening 423 of the second refrigerant flow path 42 should be as close as possible to the first opening 141, and/or the third opening 423 should be as close as possible to the second opening 142, e.g., the two interconnected openings are adjacent and all face in the same direction, or the two interconnected openings are adjacent and all face the connecting edge of the fourth plate 4 and/or the fifth plate 5 with the housing case 1, etc.

Alternatively, the fourth plate 4 and the fifth plate 5 may be disposed at the top and bottom of the accommodating case 1, respectively, where the passage of the heat exchange inner case device for articles to enter and exit is in the horizontal direction, and the fourth plate 4 and the fifth plate 5 may be disposed at two sides of the accommodating case 1, respectively, where the passage of the heat exchange inner case device for articles to enter and exit is in the vertical direction. Optionally, the fourth plate 4, the fifth plate 5 and the accommodating case 1 together form five sides of a cuboid, and the sixth side is a passage for articles to enter and exit the heat exchange inner box device. Alternatively, the second refrigerant flow path 42 may be arranged in any manner, for example, may be arranged horizontally or may be arranged vertically.

Alternatively, the second refrigerant flow path 42 may be integrated into the fourth plate 4 and/or the fifth plate 5 in any manner, for example, may be integrated into the fourth plate 4 and/or the fifth plate 5 in an integrally molded manner, may be integrated into the fourth plate 4 and/or the fifth plate 5 in an inflated manner, or the like. Alternatively, the second refrigerant flow path 42 may be provided only in the fourth plate 4, only in the fifth plate 5, or both in the fourth plate 4 and in the fifth plate 5, depending on the cooling capacity requirement and the cooling device requirement.

The heat exchange inner box device of the embodiment forms a containing cavity together through the containing shell 1, the fourth plate 4 and the fifth plate 5, and has simple structure, stability and reliability; by integrating the second refrigerant flow path 42 into the fourth plate 4 and/or the fifth plate 5, the problem of poor adhesion between the copper pipe and the inner box can be avoided, the heat exchange effect and the heat preservation effect are improved, and further the product performance is improved; in addition, more cold energy can be provided by arranging refrigerant pipelines on more wall surfaces of the inner box, so that the cold energy requirement of the ultralow temperature storage box and the like is met.

In some embodiments, as shown in fig. 2 to 3C, the heat exchange inner box device further includes:

a connection pipe 2 for communicating the second refrigerant flow path 42 with the first refrigerant flow path 14, a first end of the connection pipe 2 being fixedly connected to the first opening 141, a second end of the connection pipe 2 being fixedly connected to the third opening 423; and/or the first end of the connection pipe 2 is fixedly connected with the first opening 141, and the second end of the connection pipe 2 is fixedly connected with the third opening 423.

Specifically, the connection pipe 2 can function as a refrigerant flow path connecting the housing case 1 and the fourth plate 4 and/or the fifth plate 5. Alternatively, the connecting tube 2 may have a U-shaped structure, or may have any other shape. Alternatively, both ends of the connection pipe 2 may be shrink-fit ports and welded together with two interconnected openings, respectively, to ensure that the refrigerant does not leak from the refrigerant flow path.

In this embodiment, the first refrigerant flow path 14 and the second refrigerant flow path 42 are communicated by the connecting pipe 2, so that independent refrigerant flow paths can be communicated together, tightness of the refrigerant flow paths is ensured, and the heat exchange effect of the heat exchange inner box device can be improved by matching the connecting pipe 2 with the refrigerant flow paths arranged in a plurality of plates.

In some embodiments, as shown in fig. 1 to 5, the first refrigerant flow path 14 and the second refrigerant flow path 42 are each formed by inflation of the inner plate 111 and the outer plate 112.

Specifically, after the refrigerant flow paths in the plate of the housing case 1 and the fourth plate 4 and/or the fifth plate 5 are fixedly connected by the inner plate 111 and the outer plate 112, a cavity is formed in the middle by a blowing process, for example, after two stainless plates δ0.6 thick are welded, a cavity is formed in the middle by a blowing process to form the refrigerant flow path.

According to the embodiment, the first refrigerant flow path 14 and the second refrigerant flow path 42 are formed in a blowing-up mode, so that the refrigerant flow path and the plate body of the heat exchange inner box are integrated together, a die is not required to be prepared, the manufacturing process is simplified, the wall surface of the heat exchange inner box can directly exchange heat with the refrigerant, the inner box structure is simplified, the problems of poor fitting property and the like of a copper pipe and the inner box are avoided, the manufacturing cost can be reduced, the heat exchange effect and the heat preservation effect are improved, and further the product performance is improved.

In some embodiments, at least one of the inner panel 111 and the outer panel 112 is a stainless steel panel.

In particular, stainless steel sheets have better rigidity, corrosion resistance and low temperature resistance than aluminum sheets. Specifically, at least one of the inner plate 111 and the outer plate 112 of each of the first plate 11, the second plate 12, the third plate 13, the fourth plate 4, and the fifth plate 5 is a stainless steel plate.

Preferably, one of the inner plate 111 and the outer plate 112 is a stainless steel plate, and the other is an aluminum plate. Therefore, on the basis of ensuring the strength of the containing shell through the stainless steel plate, the strength of the aluminum plate is lower, deformation is easy to occur under the action of external force, and the refrigerant flow path can be blown out more easily.

This embodiment can make the backup pad in first board 11, second board 12, third board 13, fourth board 4 and fifth board 5 have better supporting property, corrosion resistance and low temperature resistance through adopting corrosion resistant plate to improve the stability of heat transfer inner box device, promote the product performance.

In some embodiments, the inner plate 111 is a stainless steel plate and the outer plate 112 is an aluminum plate, and the first and second refrigerant flow passages 14, 42 have a greater projection height on one side of the aluminum plate than on one side of the stainless steel plate.

In particular, aluminum sheets have better ductility than stainless steel sheets. Specifically, the protrusion height of the refrigerant flow path on the aluminum plate side is larger than the protrusion height on the stainless steel plate side, that is, the protrusion height on the outer side of the inner box is larger than the protrusion height on the inner side of the inner box.

In this embodiment, the inner plate 111 is a stainless steel plate, the outer plate 112 is an aluminum plate, and the protrusion height of the refrigerant flow path on the inner side of the heat exchange inner box device is smaller, so that the inner box volume can be increased while the rigidity and the heat exchange effect are ensured.

In some embodiments, as shown in fig. 1 to 3C, the first opening 141 is vertically higher than the second opening 142.

The first opening 141 of this embodiment is vertically higher than the second opening 142, so that a pressure difference can be established between the first opening 141 into which the refrigerant flows and the second opening 142 from which the refrigerant flows, and gravity is used to promote the flow of the refrigerant, thereby ensuring the continuity and stability of the flow of the refrigerant in the refrigerant flow path.

In some embodiments, the first opening 141 is connected to an intermediate heat exchanger.

Next, the present disclosure provides a refrigeration apparatus including the heat exchange inner box device of the above embodiment.

In the refrigeration equipment of the embodiment, the first refrigerant flow path 14 is integrated into the plate of the accommodating shell 1 of the heat exchange inner box device, so that the accommodating shell 1 has a supporting function and the wall surface of the accommodating shell directly exchanges heat with the refrigerant, the manufacturing cost can be reduced, the volume of the inner box is increased, and the heat exchange effect of the inner box is improved; meanwhile, the problem of poor laminating property of the copper pipe and the inner box can be avoided by avoiding arranging the copper pipe pipeline in the inner box, and the generation of local cavitation is avoided, so that the heat preservation effect and the product performance of the refrigeration equipment are improved.

In some embodiments, the refrigeration device is an ultra-low temperature storage case.

In some embodiments, the refrigeration apparatus further comprises a condenser and a compressor, the condenser and the compressor being located at the bottom of the heat exchange inner box arrangement.

In some specific embodiments, as shown in fig. 1 to 5, the refrigeration device is an ultralow temperature preservation box, the ultralow temperature preservation box further comprises a condenser and a compressor, the condenser and the compressor are located at the bottom of the heat exchange inner box device, the inner box of the ultralow temperature preservation box is the heat exchange inner box device in the above embodiments, a first opening 141 is arranged in the top area of the accommodating shell 1, a second opening is arranged in the bottom area of the accommodating shell 1, the heat exchange inner box device comprises a fourth plate 4 and a fifth plate 5, a second refrigerant flow path 42 is arranged on the fourth plate 4, the second refrigerant flow path 42 comprises a third opening 423 and a fourth opening 424, the third opening 423 is connected to the first opening 141 through a connecting pipe 2, the fourth opening 424 is connected to the capillary tube 6 through a capillary tube inlet 3, and the first refrigerant flow path 14, the connecting pipe 2, the second refrigerant flow path 42, the capillary tube inlet 3 and the capillary tube 6 are communicated to form a low-temperature evaporation pipeline of the ultralow temperature preservation box.

Specifically, the first refrigerant flow path 14 includes a plurality of first flow sections 143 and a plurality of second flow sections 144 that are horizontally arranged, two adjacent first flow sections 143 are communicated through a curved second flow section 144, the accommodating case 1 includes a first area 101 and a second area 102 in the height direction, in the first area 101, the distance between two adjacent first flow sections 143 is in an increasing trend from top to bottom, and the distance between two adjacent first flow sections 143 in the second area 102 is smaller than the distance between two adjacent first flow sections 143 at the bottom of the first area 101.

Specifically, the ultralow temperature preservation box adopts cascade refrigeration cycle, adopts two-stage compression systems, and each system is provided with a throttling capillary, and the capillary 6 in the embodiment is a low-temperature-stage capillary, in the cascade refrigeration system, the evaporator of the high-temperature-stage refrigeration system is the condenser of the low-temperature refrigeration system, and the evaporator of the low-temperature-stage refrigeration system is the heat exchange inner box device of the embodiment, and the expansion-type refrigerant flow path can directly exchange heat and refrigerate with the inner wall of the inner box.

More specifically, after the containing shell 1 and the fourth plate 4 are welded by adopting two stainless steel plates with the thickness of delta 0.6, a cavity is generated in the middle through an inflation process to form a refrigerant flow path; the width direction M of the flow path is 5mm, the length direction 2M is 10mm, the length of the first refrigerant flow path 14 in the plate of the inflatable accommodating shell 1 is 35.2 meters, the length of the second refrigerant flow path 42 in the plate of the inflatable fourth plate 4 is 8.5 meters, and the refrigerant can directly contact with the wall surface of the inner box for heat exchange, so that the heat exchange effect is remarkably improved.

More specifically, the inner box of the ultralow temperature preservation box is of a four-layer structure to provide enough support, the supporting frame for bearing the weight is directly embedded into the side wall of the containing shell 1, 5 freezing boxes (test tubes are placed in the freezing boxes) can be placed on each layer of the supporting frame in the vertical direction, the height of each layer depends on the height of the test tubes and the bearing weight of the layer frame, and the test result shows that under the condition of fully filling the test tubes, the weight of each layer exceeds 120kg (100 kg/m far exceeding national standard) ³ ) While the stainless steel plate may provide sufficient rigidity to the housing case 1 and the like.

In addition, the present disclosure also provides a method for manufacturing the heat exchange inner box device according to the above embodiment, where the first refrigerant flow path 14 is formed by the inner plate 111 and the outer plate 112 in a blowing manner, and the manufacturing method includes:

the inner panel 111 and the outer panel 112 are superimposed and connected in the thickness direction;

forming a first refrigerant flow path 14 between the inner plate 111 and the outer plate 112 by an inflation process;

after the inflation process is completed, the inner panel 111 and the outer panel 112 are bent together to form the accommodating case 1.

Specifically, the cross section of the refrigerant flow path should be ensured to be consistent throughout the manufacturing process. Alternatively, the inflation process may be formed by compounding double-layer stainless steel plates, embossing the pattern of the evaporator pipeline on the joint surface of the stainless steel plates, welding the composite panel at high temperature according to the pattern, performing heat treatment such as hot rolling, and then forming a refrigerant flow path by injecting high-pressure gas.

According to the manufacturing method of the embodiment, a refrigerant flow path is formed by adopting an inflation process, and the accommodating shell 1 is formed in a whole plate bending mode, so that the supporting strength of the accommodating shell 1 can be ensured, the manufacturing steps of the heat exchange inner box device are simplified, the manufacturing cost can be reduced, and the heat exchange effect and the heat preservation effect are improved.

In some embodiments, the first plate 11, the second plate 12, and the third plate 13 each have a first refrigerant flow path 14 therein, and the method of manufacturing further includes:

before the inner plate 111 and the outer plate 112 are bent together, a pressure-proof hose is provided in the first refrigerant passage 14;

after the inner panel 111 and the outer panel 112 are bent together, the pressure hose is taken out.

The manufacturing method of the embodiment can effectively prevent the refrigerant flow path from being shrunken in the bending process by arranging the anti-compression hose in the first refrigerant flow path 14, and ensure that the section of the refrigerant flow path is always consistent, thereby ensuring the stability of refrigerant flow and improving the heat exchange effect and the product performance.

The heat exchange inner box device and the refrigeration equipment provided by the disclosure are described in detail. Specific examples are set forth herein to illustrate the principles and embodiments of the present disclosure, and the above examples are merely intended to aid in understanding the methods of the present disclosure and the core ideas thereof. It should be noted that it would be apparent to those skilled in the art that various improvements and modifications could be made to the present disclosure without departing from the principles of the present disclosure, and such improvements and modifications would be within the scope of the claims of the present disclosure.

Claims (15)

1. A heat exchange inner box device, comprising:

a housing (1) comprising a first plate (11), a second plate (12) and a third plate (13), wherein the first plate (11) and the second plate (12) are arranged oppositely, the third plate (13) is connected to respective first ends of the first plate (11) and the second plate (12), and a channel for articles to enter and exit the housing (1) is formed between respective second ends of the first plate (11) and the second plate (12); a first refrigerant flow path (14) is arranged in the plate of the accommodating shell (1), the first refrigerant flow path (14) is provided with a first opening (141) and a second opening (142), the first opening (141) is used for supplying refrigerant to flow in, and the second opening (142) is used for supplying the refrigerant to flow out.

2. Heat exchange inner box arrangement according to claim 1, characterized in that the first plate (11), the second plate (12) and the third plate (13) are of an integrally formed structure.

3. The heat exchange inner box device according to claim 1, wherein the first refrigerant flow path (14) is provided in each of the first plate (11), the second plate (12) and the third plate (13).

4. The heat exchange inner box device according to claim 1, wherein the first refrigerant flow path (14) includes a plurality of first flow path sections (143) and a plurality of second flow path sections (144), the plurality of first flow path sections (143) are horizontally arranged, and two adjacent first flow path sections (143) are communicated with each other through the curved second flow path sections (144).

5. The heat exchange inner box device according to claim 4, wherein the accommodating case (1) comprises a first region (101) and a second region (102) in a height direction, the first region (101) is located above the second region (102), and in the first region (101), a distance between two adjacent first flow sections (143) tends to increase from top to bottom.

6. The heat exchange inner box arrangement according to claim 5, wherein the distance between two adjacent first flow sections (143) in the second area (102) is smaller than the distance between two adjacent first flow sections (143) at the bottom of the first area (101).

7. The heat exchange inner box device according to any one of claims 1 to 6, further comprising:

a fourth plate (4) connected to a first end of the housing (1) adjacent to the channel; and

a fifth plate (5) connected to a second end of the containment vessel (1) adjacent to the channel;

wherein the accommodating shell (1), the fourth plate (4) and the fifth plate (5) together form an accommodating cavity, a second refrigerant flow path (42) is arranged in at least one of the fourth plate (4) and the fifth plate (5), the second refrigerant flow path (42) comprises a third opening (423) and a fourth opening (424), the third opening (423) is communicated with the first opening (141), and the fourth opening (424) is used for allowing the refrigerant to flow in; and/or the third opening (423) communicates with the second opening (142), and the fourth opening (424) is used for the refrigerant to flow out.

8. The heat exchange inner box arrangement of claim 7, further comprising:

a connecting pipe (2) for communicating the second refrigerant flow path (42) with the first refrigerant flow path (14), wherein a first end of the connecting pipe (2) is fixedly connected with the first opening (141), and a second end of the connecting pipe (2) is fixedly connected with the third opening (423); and/or the first end of the connecting pipe (2) is fixedly connected with the first opening (141), and the second end of the connecting pipe (2) is fixedly connected with the third opening (423).

9. The heat exchange inner box device according to claim 7, wherein the first refrigerant flow path (14) and the second refrigerant flow path (42) are each formed by an inner plate (111) and an outer plate (112) by inflation.

10. The heat exchange inner box arrangement according to claim 9, wherein at least one of the inner plate (111) and the outer plate (112) is a stainless steel plate.

11. The heat exchange inner box device according to claim 10, wherein the inner plate (111) is a stainless steel plate, the outer plate (112) is an aluminum plate, and the first refrigerant flow path (14) and the second refrigerant flow path (42) have a projection height on the aluminum plate side larger than that on the stainless steel plate side.

12. Heat exchange inner box arrangement according to any one of claims 1-6, characterized in that the first opening (141) is vertically higher than the second opening (142).

13. A refrigeration apparatus comprising a heat exchange inner box arrangement according to any one of claims 1 to 12.

14. The refrigeration device of claim 13, wherein the refrigeration device is an ultra-low temperature storage tank.

15. The refrigeration unit of claim 13 further comprising a condenser and a compressor, said condenser and said compressor being located at the bottom of said heat exchange inner box means.