WO2021218122A1

WO2021218122A1 - Refrigerator

Info

Publication number: WO2021218122A1
Application number: PCT/CN2020/129868
Authority: WO
Inventors: 杨春; 刘铁伟; 张建
Original assignee: 海信（山东）冰箱有限公司
Priority date: 2020-04-26
Filing date: 2020-11-18
Publication date: 2021-11-04
Also published as: CN212409169U

Abstract

The present invention provides a refrigerator, comprising a refrigerator body defining a storage compartment, and a low pressure storage unit accommodated in the storage compartment. The lower pressure storage unit comprises a housing defining the storage compartment having an access opening used for accessing an item, and a door body used for opening or closing the access opening. The housing comprises an upper housing and a lower housing sealably connected to form the storage compartment. A groove is provided on an upper end portion of the lower housing. A protrusion matching the groove is provided on a lower end portion of the upper housing so as to effectively ensure the sealing performance of the housing.

Description

refrigerator

Cross-references to related applications

The present disclosure claims the priority of a Chinese patent application filed with the Chinese Patent Office with an application number of 202020650405.0 and a public name of "Refrigerator" on April 26, 2020, the entire content of which is incorporated into the present disclosure by reference.

Technical field

The present disclosure belongs to the technical field of refrigerators, and particularly relates to a refrigerator.

Background technique

As an indispensable electrical product in home life, refrigerators occupy an important share of the market. With the improvement of consumers’ requirements for the quality of fresh foods, the requirements for refrigerators are also getting higher and higher. The refrigerators are required to have higher configurations and more powerful functions. The long storage period ensures the freshness of the ingredients and prevents the loss of nutrients.

Summary of the invention

Some embodiments of the present disclosure provide a refrigerator, including:

Box body, which defines a thermally insulated storage room;

The low-pressure storage unit is housed in the storage room and is used to limit the storage space that can be kept in a low-pressure state;

The low-pressure storage unit includes:

The shell defines a storage room with a pick-and-place opening for picking and placing items;

The door is used to open or close the access port;

Wherein, the housing includes an upper housing and a lower housing that are hermetically connected to form a storage chamber; the upper end of the lower housing is provided with a groove, and the lower end of the upper housing is provided with a groove matching Raised.

Description of the drawings

Figure 1 is a schematic diagram of the overall structure of a refrigerator provided by some embodiments of the present disclosure;

2 is a schematic diagram of a part of the structure of a refrigerator provided by some embodiments of the present disclosure;

3 is a schematic structural diagram of the low-pressure storage unit when the door and the casing of the refrigerator are unlocked and in a separated state according to some embodiments of the present disclosure;

4 is a schematic diagram of an exploded structure of a refrigerator housing provided by some embodiments of the present disclosure;

Fig. 5 is a schematic diagram of another perspective exploded structure of the refrigerator housing provided by some embodiments of the present disclosure;

Fig. 6 is a top view of a lower housing of a refrigerator provided by some embodiments of the present disclosure;

Figure 7 is a side view of the lower housing of the refrigerator provided by some embodiments of the present disclosure;

Figure 8 is a side view of the upper shell of the refrigerator provided by some embodiments of the present disclosure;

FIG. 9 is a schematic structural diagram of assembling the lower casing and the lower casing of the refrigerator provided by some embodiments of the present disclosure;

Fig. 10 is a schematic diagram of an enlarged structure of area A in Fig. 9;

FIG. 11 is a schematic structural diagram of another assembly method of the lower casing and the lower casing of the refrigerator provided by some embodiments of the present disclosure;

FIG. 12 is a schematic diagram of an enlarged structure of area B in FIG. 11.

Detailed ways

The present disclosure will be further described below in conjunction with specific examples, so that those skilled in the art can better understand and implement the present disclosure, but the scope of protection claimed by the present disclosure is not limited to the scope described in the specific embodiments. . It should be noted that the embodiments in the application and the features in the embodiments can be combined with each other arbitrarily if there is no conflict.

It should be noted that all directional indicators (such as up, down, left, right, front, back...) in the embodiments of the present disclosure are only used to explain in a specific posture (as shown in the accompanying drawings) If the relative positional relationship and movement conditions of the components below change, the directional indication will also change accordingly.

In addition, the descriptions related to “first”, “second”, etc. in the present disclosure are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features.

In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on what can be achieved by a person of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be achieved, it should be considered that such a combination of technical solutions does not exist. , Is not within the scope of protection required by this disclosure.

Fig. 1 is a schematic diagram of the overall structure of a refrigerator provided by some embodiments of the present disclosure. Referring to Fig. 1, a refrigerator 1 includes a heat-insulating box body 2. The box body 2 includes an outer shell 2a, an inner liner 2b, and a Thermal insulation layer (not shown). The box 2 defines a plurality of insulated storage rooms to store food and other items. In this embodiment, these storage rooms are respectively the refrigerating compartment 12 at the upper part and the freezing compartment at the bottom. The storage rooms can be closed by their corresponding doors. In the present disclosure, the refrigerating chamber 12 is provided with a refrigerating side-by-side door, and the freezing chamber is provided with a freezing side-by-side door.

It should be understood that the present disclosure should not be limited to the specific distribution form of the storage compartments of the refrigerator 1, and the present disclosure may also be applied to other forms of refrigerators 1, such as refrigerators 1 with drawer-type doors.

The refrigerator 1 has an evaporative refrigeration system forming a closed loop. The refrigeration system includes at least a compressor (not shown), a condenser (not shown), a throttling device (not shown), and an evaporator (not shown). Since such a refrigeration system is a well-known technology in the prior art, further description thereof is omitted. Of course, the refrigerator 1 can also use other forms of refrigeration systems (such as absorption refrigeration systems, thermoelectric refrigeration systems).

The refrigerator 1 is provided with a low-pressure storage unit 15 that can be maintained in a low-pressure state, and an air extraction device for extracting gas from the low-pressure storage unit 15. The air extraction device may include a vacuum pump and a pipeline connected between the vacuum pump and the low-pressure storage unit 15.

In this embodiment, the low-pressure storage unit 15 is provided in the refrigerating compartment 12. It should be understood that in other embodiments, the low-pressure storage unit 15 may also be arranged in other storage rooms, for example, a temperature changing room whose temperature range can be switched between a refrigerating temperature zone and a freezing temperature zone.

The low-pressure storage unit 15 is located at the bottom of the refrigerating compartment 12 and is supported on the bottom wall of the refrigerating compartment 12. An adjacent position of the low-pressure storage unit 15 may be provided with a fresh-keeping container 44 suitable for storing vegetables and other foods; the low-pressure storage unit 15 and the fresh-keeping container 44 are arranged side by side at the bottom of the refrigerating compartment 12.

The low-pressure storage unit 15 may be constructed independently of the box body 2 and then assembled in the box body 2. 2 is a partial structural diagram of a refrigerator provided by some embodiments of the present disclosure. Referring to FIG. 2, in some embodiments of the present disclosure, the low-pressure storage unit 15 has a substantially flat rectangular parallelepiped shape. The width of the low-pressure storage unit 15 and the fresh-keeping container 44 The sum of the widths is slightly smaller than the width of the refrigerating compartment 12, thereby effectively distributing the bottom space of the refrigerating compartment 12, so that the fresh-keeping container 44 and the low-pressure storage unit 15 can be inserted into or pulled out of the refrigerating compartment 12.

The low-pressure storage unit 15 includes a casing 4 fixed in the refrigerating compartment 12 and a door 5 connected to the casing 4 and capable of being pushed into or out of the refrigerating compartment 12.

3 is a schematic structural diagram of a low-pressure storage unit when the door and casing of a refrigerator provided by some embodiments of the present disclosure are unlocked and in a separated state; FIG. 4 is a schematic diagram of an exploded structure of a refrigerator casing provided by some embodiments of the present disclosure; 5 is an exploded structural schematic diagram of another angle of the refrigerator housing provided by some embodiments of the present disclosure; FIG. 6 is a top view of the lower housing of the refrigerator provided by some embodiments of the present disclosure; FIG. 7 is provided by some embodiments of the present disclosure Side view of the lower case of the refrigerator. FIG. 8 is a side view of the upper shell of the refrigerator provided by some embodiments of the present disclosure; FIG. 9 is a schematic diagram of the assembly of the lower shell and the lower shell of the refrigerator provided by some embodiments of the present disclosure. 10 is a schematic diagram of an enlarged structure of the area A in FIG. 9; FIG. 11 is a schematic diagram of another assembly method of the lower casing and the lower casing of the refrigerator provided by some embodiments of the present disclosure; FIG. 12 is an enlarged view of the area B in FIG. 11 Schematic.

4-12, the housing 4 has a box-shaped structure, which defines a flat low-pressure storage chamber 14 with a food access port 14a. In some embodiments of the present disclosure, the access port 14a is located at the front end of the housing 4 facing the user.

The outer side of the box wall of the shell 4 is provided with a grid-like reinforcing rib 40 to increase the strength of the box wall of the shell 4 and prevent the shell 4 from being deformed due to the pressure difference between the inside and outside after being evacuated.

The housing 4 includes an upper housing 41 and a lower housing 42 that are connected to form the low-pressure storage chamber 14. The upper housing 41 and the lower housing 42 are connected to each other as a whole; specifically, the lower housing 42 includes a bottom wall 42a and The first lower side wall 42c, the lower rear wall 42b, the second lower side wall 42d connected to the edge of the bottom wall 42a, and the front end wall 42e that is located at the front end of the lower housing 42 and is formed with the access port 14a; The bottom wall 42a of the lower casing 42 is the bottom wall of the low-pressure storage unit 15. In some embodiments of the present disclosure, the front end wall 42e may have a flat abutting surface 43 that is substantially perpendicular to the horizontal plane for abutting with the door body 5.

The upper casing 41 includes a top wall 41a, an upper rear wall 41b, a first upper side wall 41c, and a second upper side wall 41d which are sequentially connected to the edge of the top wall 41a; the first upper side wall 41c of the upper casing 41 and The distance between the lower wall surface of the second upper side wall 41d and the top wall 41a linearly decreases from back to front, and decreases to 0 at the front edge of the top wall 41a. That is, the projections of the first upper side wall 41c and the second upper side wall 41d on a plane perpendicular to the top surface are triangular.

Among them, the upper rear wall 41b is matched with the lower rear wall 42b, the first lower side wall 42c is matched with the first upper side wall 41c, and the second lower side wall 42d is matched with the second upper side wall 41d; The front end part is matched with the front end wall 42 e of the lower housing 42 to fix the upper housing 41 and the lower housing 42 to form the low-pressure storage chamber 14.

The upper end of the lower casing 42 is provided with a groove 46, and the lower end of the upper casing 41 is provided with a protrusion 45 that is matched with the groove 46; Sealant is injected into the groove 46 of the upper shell 41, and then the protrusion 45 at the lower end of the upper shell 41 is installed in the groove 46 filled with the sealant. When the low-pressure storage unit 15 is in a vacuum fresh-keeping state, the entire low-pressure storage chamber 14 is subjected to negative pressure, which can effectively promote the tightness of the connection between the upper casing 41 and the lower casing 42.

In some embodiments of the present disclosure, on the lower housing 42, the upper end of the first lower side wall 42c is provided with a first groove 46a, the upper end of the lower rear wall 42b is provided with a second groove 46b, and the upper end of the second lower side wall 42d A third groove 46c is provided, wherein the first groove 46a, the second groove 46b, and the third groove 46c are sequentially connected to form a groove 46.

On the upper housing 41, the lower end of the first upper side wall 41c is provided with a first protruding strip 45a, the lower end of the upper rear wall 41b is provided with a second protruding strip 45b, and the lower end of the second upper side wall 41d is provided with a third protruding strip 45c, and the first protruding strip 45a, the second protruding strip 45b, and the third protruding strip 45c are sequentially connected to form a protrusion 45.

When the upper housing 41 and the lower housing 42 are assembled in a sealed manner, the first groove 46a, the second groove 46b, and the third groove 46c are filled with sealant, and the first upper side wall 41c is matched with the first lower side wall 42c. A protruding strip 45a is installed in the first groove 46a; the upper rear wall 41b is matched with the lower rear wall 42b, and the second protruding strip 45b is installed in the second groove 46b; the second upper side wall 41d and the second lower side wall 42d In cooperation, the third protruding strip 45c is installed in the third groove 46c.

As shown in FIGS. 8-9, the width of the groove 46 from top to bottom is kept equal, that is, the groove width of the groove 46 is constant from top to bottom.

In addition, the groove width of the groove 46 can be set to multiple widths from top to bottom to form a stepped inner cavity; on some basis, the groove width of the groove 46 can be reduced in sections from top to bottom. . As shown in Figures 11-12, the groove 46 includes an upper groove 46e near the upper end and a lower groove 46f near the lower end. The groove width of the upper groove 46e is recorded as the upper groove width D1, and the lower groove 46e The groove width of the groove 46f is recorded as the lower groove width D2, where D1>D2. With the above settings, the width of the protrusion 45 remains the same from top to bottom, that is, the width of the protrusion 45 is still set to be constant; the protrusion 45 is installed in the upper groove 46e and the upper groove 46f, and cooperates with the sealant to optimize the seal Effect.

The matching manner of the above groove 46 and the protrusion 45 can effectively improve the connection strength of the upper casing 41 and the lower casing 42 and ensure the airtightness of the whole casing 4. In addition, the access opening 14a of the housing 4 is formed on the front end wall 42e of the lower housing 42, so that the access opening 14a of the housing 4 is integrated, and the airtightness of the housing 4 is effectively ensured. Furthermore, the distance between the lower wall surface of the first upper side wall 41c and the second upper side wall 41d and the top wall 41a decreases linearly from back to front, and decreases to 0 at the front edge of the top wall 41a. Therefore, the number of mating surfaces of the upper shell 41 and the lower shell 42 is reduced, and the overall airtightness of the shell 4 is improved, especially the airtightness of the shell 4 at the access port 14a. On the other hand, the housing 4 is configured as a separate structure of the upper housing 41 and the lower housing 42, which facilitates the processing of the grid-shaped reinforcing ribs 40.

The door body 5 can be provided with a ring-shaped sealing element, so that when the door body 5 is in the closed position, an airtight joint is formed between the housing 4 and the door body 5 to prevent gas from entering from the joint between the housing 4 and the door body 5 Low-pressure storage room 14. The sealing element can also be arranged at the front end of the housing 4, for example connected to the front end wall 42e.

When the low-pressure storage chamber 14 is closed by the door 5 and the air extraction device is activated, the gas in the low-pressure storage chamber 14 is drawn away, and the low-pressure storage chamber 14 is in a low-pressure state. According to an embodiment of the present disclosure, at the end of the evacuation procedure, the pressure in the low-pressure storage chamber 14 is between a standard atmospheric pressure and an absolute vacuum. Since the air pressure in the low-pressure storage chamber 14 is lower than the standard atmospheric pressure, those skilled in the art also commonly call it a "vacuum chamber".

The door body 5 is a drawer type door, and the door body 5 can be pushed toward the housing 4 to close the access opening 14a of the low-pressure storage compartment 14 or pulled out to open the low-pressure storage compartment 14. A tray-shaped storage container 54 is connected to the rear side of the door body 5 for storing articles. The user obtains the articles in the low-pressure storage unit 15 or stores the articles in the low-pressure storage unit 15 by pushing or pulling the storage container 54 into or out of the low-pressure storage room 14. The door body 5 and the storage container 54 together constitute a drawer unit that can be pushed into and pulled out of the housing 4.

A retractable guide rail unit can be arranged between the storage container 54 and the casing 4 so that the door 5 and the storage container 54 can be smoothly pulled out of the casing 4 or pushed into the casing 4.

The above are only preferred embodiments of the present disclosure, and are not intended to limit the present disclosure in other forms. Any person familiar with the profession may use the technical content disclosed above to change or modify the equivalent of equivalent changes. The embodiments are applied to other fields, but any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present disclosure without departing from the content of the technical solutions of the present disclosure still fall within the protection scope of the technical solutions of the present disclosure.

Claims

The refrigerator is characterized in that it includes:

Box body, which defines a thermally insulated storage room;

The low-pressure storage unit is housed in the storage room and is used to limit the storage space that can be kept in a low-pressure state;

The low-pressure storage unit includes:

The shell defines a storage room with a pick-and-place opening for picking and placing items;

The door is used to open or close the access port;

Wherein, the housing includes an upper housing and a lower housing that are hermetically connected to form a storage chamber; the upper end of the lower housing is provided with a groove, and the lower end of the upper housing is provided with a groove matching Raised.
The refrigerator according to claim 1, wherein the width of the groove from top to bottom is kept equal.
The refrigerator according to claim 1, wherein the groove includes an upper groove near the upper end and a lower groove near the lower end, the groove width of the upper groove is denoted as D1, and the groove width of the lower groove The groove width is denoted as D2, where D1>D2; the protrusion is installed in the upper groove and the lower groove.
The refrigerator according to claim 2 or 3, wherein the width of the protrusions is kept equal from top to bottom.
The refrigerator according to any one of claims 1-3, characterized in that:

The lower housing includes a bottom wall, and a first lower side wall, a lower rear wall, a second lower side wall, and a front end wall are sequentially connected at the edge of the bottom wall;

The upper housing includes a top wall, an upper rear wall, a first upper side wall, and a second upper side wall that are sequentially connected to the edge of the top wall;

The upper rear wall is matched with the lower rear wall, the first lower side wall is matched with the first upper side wall, and the second lower side wall is matched with the second upper side wall.
The refrigerator according to claim 5, wherein the upper end of the first lower side wall is provided with a first groove, the upper end of the lower rear wall is provided with a second groove, and the upper end of the second lower side wall is provided with a first groove. A third groove is provided; the first groove, the second groove, and the third groove are connected in sequence to form the groove;

The lower end of the first upper side wall is provided with a first protruding strip, the lower end of the upper rear wall is provided with a second protruding strip, the lower end of the second upper side wall is provided with a third protruding strip, and the first A convex strip, a second convex strip, and a third convex strip are sequentially connected to form a protrusion;

And the first convex strip, the second convex strip, and the third convex strip are sequentially installed in the first groove, the second groove, and the third groove.
The refrigerator according to claim 5, wherein the distance between the lower wall surface of the first upper side wall and the second upper side wall of the upper casing and the top wall linearly decreases from back to front. And it is reduced to 0 at the front edge of the top wall; the front end of the top wall is in hermetically connected with the front end wall of the lower casing.
The refrigerator according to claim 5, wherein the access opening of the casing is formed on the front wall of the lower casing.
The refrigerator according to any one of claims 1 to 4, wherein the outer side of the wall of the casing is provided with reinforcing ribs.
The refrigerator according to claim 9, wherein the reinforcing ribs are distributed in a grid pattern.