CN218544938U - Refrigerator - Google Patents

Abstract

The utility model relates to the technical field of refrigeration, and discloses a refrigerator, which comprises a refrigerator body, a refrigerator door and a frost reduction module; the cabinet door comprises a door liner, a door shell and a cabinet door body, wherein a first mounting hole is formed in the door liner, and a second mounting hole is formed in the door shell; the defrosting module comprises a first mounting assembly, a second mounting assembly, a hose and a limiting piece; the first mounting assembly is embedded in the first mounting hole, is provided with a first pore passage for the insertion of the first end of the hose, and is provided with a first air hole communicated with the outside of the door cavity; the second mounting component is embedded in the second mounting hole, is provided with a second hole for the second end of the hose to be inserted, and is provided with a second air hole communicated with the outside of the door cavity; the periphery of hose is located to the locating part cover, makes the hose not with the internal surface contact of door shell or door courage, and the maximum dimension of locating part is less than the distance between door shell and the door courage, makes the locating part not simultaneously with the internal surface contact of door shell and door courage. The utility model discloses the equipment is convenient, and the packaging efficiency is high, leads to the shop front to swell when effectively avoiding foaming.

Description

Refrigerator

Technical Field

The utility model relates to the field of refrigeration technology, especially, relate to a freezer.

Background

The problem of the interior frost formation volume of commercial horizontal freezer is big leads to user experience to feel poor, consequently, the freezer product on the market generally is provided with the structure that subtracts frosting.

The main reasons for the large amount of frost in the freezer are: the pressure in the cabinet can change due to the startup and shutdown of the compressor, when the compressor works, wet air outside the cabinet enters the cabinet through the door gap, and the wet air is pre-cooled in the cabinet and condensed into frost.

The principle of the structure of reducing frost on the market does: set up the ventilation structure that can communicate in the cabinet and outside the cabinet on the cabinet door, be provided with dry material in the ventilation structure, when compressor during operation, the outside humid air of cabinet passes through this ventilation structure, becomes dry air after being dehumidified by dry material, gets into in the freezer to realize the defrosting purpose.

However, the existing frost reduction structure has low assembly efficiency and a complex sealing mode, and the adopted PP corrugated pipe is easy to contact with a door shell during foaming to cause door surface bulging.

Thus, improvements in the prior art are needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at: the utility model provides a freezer to solve prior art's freezer and subtract frosting structure packaging efficiency and low and arouse the technical problem of door facies swell easily.

In order to achieve the above object, the utility model provides a refrigerator, include:

a cabinet defining a refrigeration chamber therein;

the cabinet door is movably connected with the cabinet body and used for opening and closing the refrigeration cavity; the cabinet door comprises a door shell and a door liner, and the door liner is arranged on the inner side of the door shell and forms a door cavity together with the door shell; the door liner is provided with a first mounting hole, and the door shell is provided with a second mounting hole;

a frost reduction module disposed within the door cavity.

In some embodiments of the present application, the frost reduction module includes a first mounting assembly, a second mounting assembly, a hose, and a stopper; the first mounting assembly is embedded in the first mounting hole and provided with a first pore passage for the first end of the hose to be inserted, and the first mounting assembly is provided with a first air hole communicated with the outside of the door cavity; the second mounting component is embedded in the second mounting hole and provided with a second hole for the second end of the hose to be inserted, and the second mounting component is provided with a second air hole communicated with the outside of the door cavity; the locating part cover is located the periphery of hose makes the hose not with the internal surface contact of door shell or door courage, the maximum dimension of locating part is less than the door shell with distance between the door courage makes the locating part not simultaneously with the door shell with the internal surface contact of door courage.

In some embodiments of the present application, the first mounting assembly includes a mounting box and a front cover;

the mounting box is positioned in the door cavity, the mounting box forms a first inner cavity and a first pore channel, the first inner cavity corresponds to the first mounting hole, the inlet end of the first pore channel is used for inserting the first end of the hose, and the outlet end of the first pore channel is communicated with the first inner cavity;

the front cover is positioned outside the door cavity, the first air hole is formed in the front cover, and the first air hole is communicated with the first inner cavity when the front cover is connected with the mounting box in a covering mode.

In some embodiments, the wall of the first channel has a first taper such that the first channel tapers from its inlet end to its outlet end to an interference fit with the hose.

In some embodiments of the present application, the outlet end of the first inner cavity or the first duct is provided with a first one-way valve, which only allows air to flow from the first duct to the first air hole and does not allow air to flow from the first air hole to the first duct.

In some embodiments of the present application, the first one-way valve is a movably disposed first blocking piece;

the outlet end department in first pore is provided with first fender ring, the aperture that first fender ring is less than the external diameter of hose is used for avoiding the hose contact first separation blade.

In some embodiments of the present application, the second mounting assembly includes a rear cover and an air duct box;

the rear cover is embedded in the second mounting hole, a third inner cavity is formed inside the rear cover, and a second air hole is formed at the first end, located outside the door cavity, of the third inner cavity;

the air duct box forms a second inner cavity and a second duct, the inlet end of the second duct is used for the second end of the hose to be inserted, the outlet end of the second duct is communicated with the second inner cavity, and the second inner cavity is communicated with the second end of the third inner cavity, which is located in the door cavity.

In some embodiments, the wall of the second channel has a second taper such that the second channel tapers from its inlet end to its outlet end to an interference fit with the hose.

In some embodiments of the present application, the outlet end of the second inner cavity or the second duct is provided with a second one-way valve, and the second one-way valve only allows air to flow from the second air hole to the second duct, but does not allow air to flow from the second duct to the second air hole.

In some embodiments of the present application, the second one-way valve is a movably disposed second blocking piece;

the exit end department in second pore is provided with the second and keeps off the ring, the aperture that the second kept off the ring is less than the external diameter of hose is used for avoiding the hose contact the second separation blade.

In some embodiments of this application, the first end of back lid is provided with the round boss, the outer wall of back lid is close to one section of boss has the third tapering, makes the external diameter of back lid from its second end to first end grow gradually to with the second mounting hole forms interference fit.

The embodiment of the utility model provides a freezer compares with prior art, and its beneficial effect lies in:

the utility model discloses freezer, the defrosting module of cabinet door adopt the hose to assemble through the mode and the mount pad of pegging graft including inlaying the mount pad on locating door shell and door courage respectively, and the equipment is convenient, and the packaging efficiency is high. And, because the hose material matter is soft, even the foaming in-process contacts with the door shell and also can not lead to the shop front to swell, the locating part also sets up to the size with hose size matching, leads to the shop front to swell when effectively avoiding foaming.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural view of the refrigerator of the present invention;

FIG. 2 is a schematic view of an assembled structure of the cabinet door;

fig. 3 is a schematic diagram of the explosion structure of the cabinet door of the present invention;

FIG. 4 is a schematic structural view of a frost reduction module;

FIG. 5 is an exploded view of the frost reduction module;

FIG. 6 is a schematic view of a front view structure of the cabinet door;

FIG. 7 is a cross-sectional view taken at A1-A1 of FIG. 6;

FIG. 8 is a schematic view of the hose and stopper;

FIG. 9 is a cross-sectional view taken at B1-B1 of FIG. 4;

FIG. 10 is a schematic view of the mounting box;

FIG. 11 is a schematic view of the structure of the front cover;

FIG. 12 is a cross-sectional view taken at C1-C1 of FIG. 4;

FIG. 13 is a schematic structural view of the duct box;

fig. 14 is a schematic structural view of the rear cover.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present application.

In the description of the present application, it is to be understood that the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or as implying that the number of indicated technical features is indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

As shown in fig. 1 to 14, a refrigerator of the present invention mainly includes a cabinet body 100, a cabinet door 200, a frost reduction module 300, and a refrigeration cycle system.

A refrigerating chamber is defined in the cabinet body 100, and the cabinet door 200 is movably connected with the cabinet body 100 and used for opening and closing the refrigerating chamber. The cabinet door 200 includes a door shell 220 and a door liner 210, wherein the door liner 210 is disposed on an inner side of the door shell 220, and forms a door cavity 201 together with the door shell 220. The door core 210 is provided with a first mounting hole 211, and the door shell 220 is provided with a second mounting hole 221.

The frost reducing module 300 is disposed in the door cavity 201, and the frost reducing module 300 includes a first mounting assembly, a second mounting assembly, a hose 330, and a stopper 340. The first mounting assembly is embedded in the first mounting hole 211, the first mounting assembly is provided with a first hole passage 312 for inserting the first end of the hose 330, and the first mounting assembly is provided with a first air hole 321 communicated with the outside of the door cavity 201. The second mounting assembly is embedded in the second mounting hole 221, the second mounting assembly is provided with a second hole 352 for inserting the second end of the hose 330, and the second mounting assembly is provided with a second air hole 362 communicated with the outside of the door cavity 201. The stopper 340 is sleeved on the outer circumference of the hose 330, so that the hose 330 does not contact with the inner surface of the door shell 220 or the door liner 210. The maximum size of the limiting member 340 is smaller than the distance between the door shell 220 and the door liner 210, so that the limiting member 340 is not in contact with the inner surfaces of the door shell 220 and the door liner 210 at the same time.

Preferably, the hose 330 is made of PVC, and the outer diameter of the hose 330 is less than 11mm.

The refrigeration cycle system generally comprises a compressor, a condenser, a drying filter, a capillary tube, an evaporator and other component structures which are communicated through pipelines, and the working process of the refrigeration cycle system comprises a compression process, a condensation process, a throttling process and an evaporation process. Specifically, the compression process is as follows: after a power line of the refrigerator is plugged, the compressor starts to work under the condition that the refrigerator has a refrigeration demand, the low-temperature and low-pressure refrigerant from the evaporator is sucked by the compressor, and is compressed into high-temperature and high-pressure superheated gas in the cylinder of the compressor and then is discharged into the condenser. The condensation process is as follows: high-temperature and high-pressure refrigerant gas is radiated by the condenser, the temperature is continuously reduced, the refrigerant gas is gradually cooled to normal-temperature and high-pressure saturated steam and further cooled to saturated liquid, the temperature is not reduced any more, and the pressure of the refrigerant in the whole condensation process is almost unchanged. The throttling process is as follows: the condensed refrigerant saturated liquid flows into the capillary after moisture and impurities are filtered by the drying filter, throttling and pressure reduction are carried out through the capillary, and the refrigerant is changed into normal-temperature low-pressure wet steam. The evaporation process is as follows: the wet steam with normal temperature and low pressure enters the evaporator to begin to absorb heat for vaporization, so that the temperature of the evaporator and the temperature around the evaporator are reduced, the refrigeration of the refrigeration cavity is realized, and the refrigerant is changed into low-temperature and low-pressure gas. And the refrigerant coming out of the evaporator returns to the compressor again, the processes are repeated, energy conversion is carried out through the state change of the refrigerant, and the heat in the refrigerator is transferred to the air outside the refrigerator, so that the refrigeration cycle of the refrigerator is realized. When the evaporator is arranged on the wall of the refrigerating chamber, the direct-cooling refrigerator is obtained; when the evaporator is arranged in the air duct of the refrigerator, the air-cooled refrigerator is obtained. The structure setting and the operation principle about freezer refrigeration cycle system described above are prior art, and this application is no longer repeated.

The application provides a freezer, the frost reduction module of cabinet door adopts the hose to assemble through the mode of pegging graft and mount pad including inlaying the mount pad on locating door shell and door courage respectively, and the equipment is convenient, and the packaging efficiency is high. And, because the hose material matter is soft, even the foaming in-process contacts with the door shell and also can not lead to the shop front to swell, the locating part also sets up to the size with hose size matching, leads to the shop front to swell when effectively avoiding foaming.

In some modifications of the present application, the first mounting assembly includes a mounting box 310 and a front cover 320. The mounting box 310 is located in the door cavity 201, the mounting box 310 forms a first inner cavity 311 and the first duct 312, the first inner cavity 311 corresponds to the first mounting hole 211, an inlet end of the first duct 312 is inserted into a first end of the hose 330, and an outlet end of the first duct 312 is communicated with the first inner cavity 311. The front cover 320 is located outside the door cavity 201, the first air hole 321 is formed in the front cover 320, and when the front cover 320 is connected with the mounting box 310 in a covering manner, the first air hole 321 is communicated with the first inner cavity 311.

In some refinements of the application, the first inner cavity 311 or the outlet end of the first port 312 is provided with a first one-way valve which only allows air to flow from the first port 312 to the first air hole 321.

In some refinements of the present application, the second mounting assembly includes a rear cover 360 and a duct box 350. The rear cover 360 is embedded in the second mounting hole 221, a third inner cavity 361 is formed inside the rear cover 360, and the second air hole 362 is formed at a first end of the third inner cavity 361, which is located outside the door cavity 201. The duct box 350 forms a second inner cavity 351 and the second duct 352, an inlet end of the second duct 352 is inserted by the second end of the hose 330, an outlet end of the second duct 352 is communicated with the second inner cavity 351, and the second inner cavity 351 is communicated with a second end of the third inner cavity 361 located in the door cavity 201.

In some modifications of the present application, the second inner chamber 351 or the outlet end of the second orifice 352 is provided with a second one-way valve which allows air to flow only from the second air hole 362 to the second orifice 352.

In some modifications of this application, the first end of back lid 360 is provided with a round boss 363, the outer wall of back lid 360 is close to one section of boss 363 has the third tapering, makes the external diameter of back lid 360 from its second end to first end grow gradually to with second mounting hole 221 forms interference fit.

Example 1

Referring to fig. 1 to 14, the refrigerator of the present embodiment, specifically a horizontal refrigerator, mainly includes a cabinet 100, a cabinet door 200, a frost reducing module 300, and a refrigeration cycle system.

The cabinet door 200 includes a door shell 220, a door liner 210 and a door end cover 230, the door end cover 230 is disposed on two lateral sides of the door shell 220, the door liner 210 is disposed on the inner side of the door shell 220, and the door end cover 230, the door liner 210 and the door shell 220 together form a door cavity 201. The door liner 210 is provided with a first mounting hole 211, and the first mounting hole 211 is a rectangular counter-sunk hole. The door shell 220 is provided with a second mounting hole 221, and the second mounting hole 221 is a circular countersunk hole.

Referring to fig. 4-5, the frost reduction module 300 includes a first mounting assembly, a second mounting assembly, a hose 330, and a stopper 340.

Referring to fig. 9-11, the first mounting assembly includes a mounting box 310 and a front cover 320.

The mounting box 310 is located in the door cavity 201, the mounting box 310 forms a first inner cavity 311 and the first duct 312, the first inner cavity 311 corresponds to the first mounting hole 211, an inlet end of the first duct 312 is inserted into a first end of the hose 330, and an outlet end of the first duct 312 is communicated with the first inner cavity 311. The front cover 320 is located outside the door cavity 201, the first air hole 321 is formed in the front cover 320, and when the front cover 320 is connected with the mounting box 310 in a covering manner (specifically, the covering connection can be realized through a buckle), the first mounting assembly is embedded in the first mounting hole 211, and the first air hole 321 is communicated with the first inner cavity 311.

Referring to fig. 9, the hole wall F1 of the first hole 312 has a first taper, where the first taper is about 0.75 °, so that the hole diameter of the first hole 312 gradually decreases from the inlet end to the outlet end thereof to form an interference fit with the hose 330, thereby forming a sealed connection, and thus, after the hose 330 is inserted in place, no additional tape is needed for sealing, which is beneficial to saving materials and improving assembly efficiency.

The first inner cavity 311 is provided with a first one-way valve, which is a movably disposed first flap (not shown, and the structure thereof is configured with a second flap 353, which will be described below), the first flap only allows air to flow from the first orifice 312 to the first air hole 321, and does not allow air to flow from the first air hole 321 to the first orifice 312. A first blocking ring 313 is arranged at the outlet end of the first duct 312, and the aperture of the first blocking ring 313 is smaller than the outer diameter of the flexible pipe 330, so as to prevent the flexible pipe 330 from being inserted into the first inner cavity 311 and contacting the first blocking piece, so that the movement of the first blocking piece is influenced, and the function failure of the check valve is caused.

Referring to fig. 12-14, the second mounting assembly includes a rear cover 360 and a duct box 350.

The rear cover 360 is embedded in the second mounting hole 221, a third inner cavity 361 is formed inside the rear cover 360, and a drying agent is arranged in the third inner cavity 361. The second air hole 362 is formed at a first end of the third inner cavity 361 located outside the door cavity 201. The first end of the rear cover 360 is provided with a circle of bosses 363, a section F3, close to the bosses 363, of the outer wall of the rear cover 360 has a third taper, the first taper is about 0.75 degrees, so that the outer diameter of the rear cover 360 gradually increases from the second end to the first end to form interference fit with the second mounting hole 221, sealed mounting is formed, a sealing structure is not needed, mounting is firm, and the problem of material leakage in the foaming process is effectively reduced.

The duct box 350 forms a second inner cavity 351 and the second duct 352, the inlet end of the second duct 352 is inserted by the second end of the hose 330, the outlet end of the second duct 352 is communicated with the second inner cavity 351, and the second inner cavity 351 is communicated with the second end of the third inner cavity 361 located in the door cavity 201.

Referring to fig. 12, the hole wall F2 of the second duct 352 has a second taper, which is about 0.75 °, so that the hole diameter of the second duct 352 gradually decreases from the inlet end to the outlet end thereof to form an interference fit with the hose 330, thereby forming a sealed connection, and thus, after the hose 330 is inserted in place, no additional adhesive tape is needed for sealing, which is beneficial to saving materials and improving assembly efficiency.

The second inner cavity 351 is provided with a second one-way valve, the second one-way valve is a movably arranged second baffle 353, and the second baffle 353 only allows air to flow into the second duct 352 from the second air hole 362, but does not allow air to flow into the second air hole 362 from the second duct 352. A second retaining ring 354 is disposed at an outlet end of the second duct 352, and a hole diameter of the second retaining ring 354 is smaller than an outer diameter of the flexible tube 330, so as to prevent the flexible tube 330 from being inserted into the second inner cavity 351 and contacting the second retaining piece 353.

The first one-way valve and the second one-way valve can be arranged alternatively or simultaneously.

Referring to fig. 8, the stopper 340 is sleeved on the outer circumference of the hose 330, so that the hose 330 does not contact with the inner surface of the door shell 220 or the door liner 210. The maximum size of the limiting member 340 is smaller than the distance between the door shell 220 and the door liner 210, so that the limiting member 340 is not in contact with the inner surfaces of the door shell 220 and the door liner 210 at the same time. The position-limiting member 340 may be a distance star structure.

When the compressor is operated, the air outside the cabinet 100 flows into the cabinet 100 through the second air hole 362, the second duct 352, the hose 330, the first duct 312 and the first air hole 321 in sequence.

Compared with the prior art, the refrigerator provided by the application has the advantages that the structure of the defrosting module is optimized, the installation efficiency is effectively improved after optimization, the appearance quality of a cabinet door product after foaming is greatly improved, and the refrigerator is specifically embodied as follows:

first, in the prior art, a D17.6mm PP corrugated pipe is generally used as a connecting pipe, a large-distance star mounting seat is used as a limiting part, and the PP corrugated pipe is sleeved on a mounting box. And among the technical scheme of this application, the connecting pipe is optimized to D10 mm's PVC hose, and the great distance star mount pad is changed into two little distance star mount pads, and the pipe box installation is changed to embedded in the mounting box trompil by original overcoat on the mounting box, has improved the door face swell problem of cabinet door greatly.

Second, this application makes the pore of mounting box, wind channel box have the tapering, the hose assembly of being convenient for to increase cyclic annular fender ring in pore terminal position, effectively prevent that the hose from pushing up the check valve separation blade and causing the frost reduction inefficacy.

Third, this application makes behind the frost reduction lid be used for with door shell mounting hole complex pipeline section outer pipe footpath increase and circular arc transition to be used for forming interference fit with the door shell mounting hole, thereby need not sponge sticky tape sealed, effectively improve a body foaming hourglass material problem.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.

Claims (10)

1. A refrigerator, comprising:

a cabinet defining a refrigeration chamber therein;

the cabinet door is movably connected with the cabinet body and used for opening and closing the refrigeration cavity; the cabinet door comprises a door shell and a door liner, wherein the door liner is arranged on the inner side of the door shell and forms a door cavity together with the door shell; the door liner is provided with a first mounting hole, and the door shell is provided with a second mounting hole;

a frost reduction module disposed within the door cavity;

the defrosting module comprises a first mounting assembly, a second mounting assembly, a hose and a limiting piece; the first mounting assembly is embedded in the first mounting hole and provided with a first pore passage for the insertion of the first end of the hose, and the first mounting assembly is provided with a first air hole communicated with the outside of the door cavity; the second mounting component is embedded in the second mounting hole and provided with a second pore passage for the insertion of the second end of the hose, and the second mounting component is provided with a second air hole communicated with the outside of the door cavity; the locating part cover is located the periphery of hose makes the hose not with the internal surface contact of door shell or door courage, the maximum dimension of locating part is less than the door shell with distance between the door courage makes the locating part not simultaneously with the door shell with the internal surface contact of door courage.

2. The cooler of claim 1, wherein:

the first mounting assembly comprises a mounting box and a front cover;

the mounting box is positioned in the door cavity, the mounting box forms a first inner cavity and a first duct, the first inner cavity corresponds to the first mounting hole, the inlet end of the first duct is used for inserting the first end of the hose, and the outlet end of the first duct is communicated with the first inner cavity;

the front cover is positioned outside the door cavity, the first air hole is formed in the front cover, and the first air hole is communicated with the first inner cavity when the front cover is connected with the mounting box in a covering mode.

3. The refrigerator of claim 2 wherein:

the hole wall of the first hole passage has a first taper, so that the hole diameter of the first hole passage is gradually reduced from the inlet end to the outlet end of the first hole passage to form an interference fit with the hose.

4. The cooler of claim 2, wherein:

the outlet end of the first inner cavity or the first hole passage is provided with a first one-way valve, and the first one-way valve only allows air to flow from the first hole passage to the first air hole and does not allow air to flow from the first air hole to the first hole passage.

5. The refrigerator of claim 4 wherein:

the first one-way valve is a movably arranged first baffle plate;

the outlet end department in first pore is provided with first fender ring, the aperture that first fender ring is less than the external diameter of hose is used for avoiding the hose contact first separation blade.

6. The refrigerator of claim 1 wherein:

the second mounting assembly comprises a rear cover and an air duct box;

the rear cover is embedded in the second mounting hole, a third inner cavity is formed inside the rear cover, and a second air hole is formed at the first end, located outside the door cavity, of the third inner cavity;

the air duct box forms a second inner cavity and a second duct, the inlet end of the second duct is used for inserting the second end of the hose, the outlet end of the second duct is communicated with the second inner cavity, and the second inner cavity is communicated with the second end of the third inner cavity, which is positioned in the door cavity.

7. The refrigerator of claim 6 wherein:

the hole wall of the second hole passage has a second taper, so that the hole diameter of the second hole passage is gradually reduced from the inlet end to the outlet end of the second hole passage to form an interference fit with the hose.

8. The cooler of claim 6, wherein:

and a second one-way valve is arranged at the outlet end of the second inner cavity or the second hole passage, and the second one-way valve only allows air to flow from the second air hole to the second hole passage and does not allow air to flow from the second hole passage to the second air hole.

9. The cooler of claim 8, wherein:

the second one-way valve is a movably arranged second baffle plate;

and a second retaining ring is arranged at the outlet end of the second duct, and the aperture of the second retaining ring is smaller than the outer diameter of the hose and used for avoiding the hose from contacting the second retaining sheet.

10. The refrigerator of claim 6 wherein:

the first end of back lid is provided with the round boss, the outer wall of back lid is close to one section of boss has the third tapering, makes the external diameter of back lid from its second end to first end grow gradually to with the second mounting hole forms interference fit.

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