CN214276194U - Refrigerator with a door - Google Patents

Abstract

The utility model provides a refrigerator, include: the refrigerator comprises a box body, a storage chamber and a refrigerating chamber, wherein the storage chamber is limited in the box body and comprises at least one deep cooling chamber; a Stirling refrigeration system including a Stirling cryocooler configured to provide cold to the cryogenic compartment; and the double-layer door is arranged on the front side of the storage compartment and used for opening and closing the storage compartment. The utility model discloses a refrigerator is through utilizing stirling refrigerating system for this refrigerator has cryrogenic room, and through setting up double door, can improve the thermal insulation performance of refrigerator.

Description

Refrigerator with a door

Technical Field

The utility model relates to a refrigeration field especially relates to a refrigerator.

Background

With the health emphasis of people, the household stock of high-end food materials is also increasing. According to the research, the storage temperature of the food material is lower than the glass transition temperature, the property of the food material is relatively stable, and the quality guarantee period is greatly prolonged. Wherein the glass transition temperature of the food material is mostly concentrated at-80 ℃ to-30 ℃. Most of the existing household refrigerators adopt a vapor compression mode for refrigeration, and the temperature in the refrigerator is difficult to reach below minus 30 ℃. The Stirling refrigerating system is adopted for refrigeration in the fields of spaceflight, medical treatment and the like, and the refrigerating temperature of the system can be below 200 ℃ below zero.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide the thermal insulation performance of refrigerator with cryrogenic compartment.

The utility model discloses a further purpose reduces cryrogenic compartment and leaks cold.

Particularly, the utility model provides a refrigerator, include:

the refrigerator comprises a box body, a storage chamber and a refrigerating chamber, wherein the storage chamber is limited in the box body and comprises at least one deep cooling chamber;

a Stirling refrigeration system including a Stirling cryocooler configured to provide cold to a cryogenic compartment; and

and the double-layer door is arranged on the front side of the at least one storage compartment and used for opening and closing the storage compartment.

Optionally, the double-layer door comprises an outer door body and an inner door body;

the inner door body is positioned at the inner side of the outer door body, is arranged at the front side of the deep cooling chamber and is used for opening and closing the deep cooling chamber; and the outer door body and the inner door body are arranged independently, so that the inner door body is kept closed when the outer door body is opened outwards.

Optionally, the refrigerator further comprises:

the door frame is arranged at the front part of the box body of the deep cooling chamber; and

one end of the inner door body is connected with the box body, and the other end of the inner door body is separably connected with the door frame through the mechanical locking mechanism.

Optionally, a clamping groove is formed in the front end face of the door frame;

the mechanical locking mechanism comprises: the door comprises a first structural member, a second structural member, a third structural member and a rotary rod, wherein a clamping joint is formed on a side end plate of the first structural member, and the first structural member is rotatably connected with a side end face of the inner door body through the third structural member and the rotary rod; the second structural member is connected with the door frame and is provided with a protruding part extending to the clamping groove; the clamping head is moved into the clamping groove and matched with the protruding portion to realize the sealing fixation of the inner door body and the door frame, and the clamping head is moved out of the clamping groove to realize the separation of the inner door body and the door frame.

Optionally, a concave part is formed on the front end surface of the inner door body;

the front end plate of the first structural member extends into the recessed part, and the front side of the first structural member is provided with a sign.

Optionally, the inner door body is connected with the box body through at least two hinges.

Optionally, a sealing strip is arranged between the inner door body and the door frame.

Optionally, the distance between the inner door body and the outer door body is not more than 5 mm.

Optionally, the inner door body is further configured to:

a vacuum heat insulation board is arranged in the inner door body; and/or

A pressure balance hole is formed on the door seal of the inner door body; and/or

The outer surface of the inner door body is provided with a heating wire.

Optionally, the storage compartment comprises at least one common compartment, and the common compartment is a refrigerating compartment, a freezing compartment or a temperature-changing compartment;

at least one common chamber is arranged above or below the deep cooling chamber; and is

The double-layer door is configured to: the size of the outer door body is larger than that of the inner door body, and the common compartment is opened and closed by the outer door body.

The utility model discloses a refrigerator is through utilizing stirling refrigerating system for this refrigerator has cryrogenic room, and through setting up double door, can improve the thermal insulation performance of refrigerator.

Further, the utility model discloses an outer door body and the interior door body mutual independence of double-deck door of refrigerator set up, and the interior door body sets up in the front side of cryrogenic compartment for cryrogenic compartment only just can open when outer door body and interior door body are opened simultaneously, is particularly useful for the same outer door body of cryrogenic compartment and ordinary compartment sharing, can effectively reduce the user and get the hourglass cold of cryrogenic compartment when putting article in ordinary compartment.

The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the present invention will be described in detail hereinafter, by way of illustration and not by way of limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

fig. 1 is a schematic perspective view of a refrigerator according to an embodiment of the present invention.

Fig. 2 is a partial perspective view of the refrigerator shown in fig. 1.

Fig. 3 is an exploded view of the deep cooling inner container and the double-layer door of the refrigerator shown in fig. 1.

Fig. 4 is a partially exploded schematic view of a double door and a door frame of the refrigerator shown in fig. 3.

Fig. 5 is a partially enlarged schematic view of fig. 4.

Detailed Description

Fig. 1 is a schematic perspective view of a refrigerator 100 according to an embodiment of the present invention. The utility model discloses refrigerator 100 includes: a cabinet 101, a stirling refrigeration system, and at least one double-layer door 400. The box 101 may include a casing, an inner container disposed in the casing, and a heat insulation layer disposed between the casing and the inner container. The inner container defines a storage compartment and may include at least one common inner container and at least one cryogenic inner container 113, wherein the common inner container defines a common compartment 111 and the cryogenic inner container 113 defines a cryogenic compartment 112. The insulation around the cryogenic compartment 112 may be made of polyurethane foam and vacuum insulation panels (i.e., VIP panels). The Stirling refrigeration system includes a Stirling cooler 300 configured to provide cold to the cryogenic compartment 112. The double door 400 is disposed at a front side of at least one storage compartment, and opens and closes the storage compartment. The utility model discloses refrigerator 100 is through utilizing stirling refrigerating system for this refrigerator 100 has cryrogenic compartment 112, and through setting up double door 400, can improve refrigerator 100's thermal insulation performance. Herein, the "normal inner container" refers to an inner container other than the deep cooling inner container 113, such as a refrigerating inner container, a freezing inner container, and a temperature changing inner container. Correspondingly, the "ordinary compartment" refers to other non-ultralow temperature compartments except the cryogenic compartment 112, such as a refrigerating compartment, a freezing compartment and a temperature-changing compartment, which are respectively defined by a refrigerating liner, a freezing liner and a temperature-changing liner. The preservation temperature of the cold storage chamber can be 4-7 ℃ generally, and the preservation temperature of the freezing chamber can be-20-16 ℃ generally. The temperature-changing chamber can be adjusted according to requirements and used as a refrigerating chamber or a freezing chamber. The storage temperature of the cryogenic compartment 112 may be generally-14 ℃ to-80 ℃. In the refrigerator 100 shown in fig. 1, the refrigerator 100 is a cross-door refrigerator, and the normal compartment 111 of the refrigerator 100 is a refrigerating compartment located at the upper part, a temperature-changing compartment located at the left side of the lower part, and a freezing compartment located at the upper right side of the lower part, and a deep-cooling compartment 112 is located below the freezing compartment.

A brief description of the stirling refrigeration system of the refrigerator 100 will now be provided. Fig. 2 is a partial perspective view of the refrigerator 100 shown in fig. 1. The stirling refrigeration system may include a stirling cooler 300, a cold sink 303, and a heat sink 304. The stirling cooler 300 may include a housing, a cylinder, a piston, and a drive mechanism to drive the piston in motion. The housing may be composed of a main body 301 and a cylindrical portion 302. The driving mechanism may be disposed within the body portion 301. The piston may be arranged to reciprocate within the cylinder portion 302 to form a cold end and a hot end. The cold end of the stirling cooler 300 may be disposed above the hot end thereof to facilitate transfer of cold generated by the cold end to the cryogenic compartment 112. The cold guide device 303 may include a cold end adapter 331 thermally connected to the cold end of the stirling cooler 300 and a plurality of cold guide heat pipes 332 thermally connected to the cold end adapter 331. Cold heat conducting pipe 332 is thermally coupled to a heat exchanger (not shown) disposed within cryogenic compartment 112 to provide cooling energy to cryogenic compartment 112. The heat sink 304 is thermally coupled to the hot side of the stirling cooler 300 and may include a hot side adapter 341, a heat conducting heat pipe 342, and fins 343. With continued reference to fig. 2, the refrigerator 100 may also include a vapor compression refrigeration system including a compressor 201, a condenser 202, a throttling element, an evaporator, etc., configured to provide refrigeration to at least the common compartment 111. Wherein, a device chamber 102 is defined at the bottom of the rear side of the box body 101, the stirling cooler 300, the compressor 201 and the condenser 202 are arranged in the device chamber 102 in sequence in the transverse direction, wherein the stirling cooler 300 is arranged corresponding to the cryogenic compartment 112. The stirling cooler 300 may be secured within the device chamber 102 by springs, shock mounts, or the like. Further, a heat radiation fan 203 is provided between the compressor 201 and the condenser 202.

Fig. 3 is an exploded view of deep cooling inner container 113 and double door 400 of refrigerator 100 shown in fig. 1. In some embodiments, the double door 400 includes an outer door body 401 and an inner door body 402; the inner door body 402 is positioned on the inner side of the outer door body 401, is arranged on the front side of the deep cooling chamber 112 and is used for opening and closing the deep cooling chamber 112; and the outer door body 401 and the inner door body 402 are provided independently of each other so that the inner door body 402 remains closed while the outer door body 401 is opened outward. The preservation temperature of the cryogenic compartment 112 is relatively low, when the cryogenic compartment 112 and the common compartment 111 share the same outer door body 401, the double-layer door 400 is arranged to include the outer door body 401 and the inner door body 402 which are independent of each other, the size of the outer door body 401 is larger than that of the inner door body 402, and the common compartment 111 is opened and closed by the outer door body 401, so that when a user takes and places articles from and in the common compartment 111, the inner door body 402 can be kept in a closed state under the condition that the outer door body 401 is opened, namely, the cryogenic compartment 112 is still sealed, and cold leakage can be effectively reduced.

In some embodiments, the distance between the inner door body 402 and the outer door body 401 is no greater than 5 mm. The distance is too large, and the frosting risk is large. In addition, the outer surface of the inner door 402 may be provided with a heating wire (not shown), which may be intermittently turned on or turned on depending on conditions. Meanwhile, in order to ensure that the outer side of the inner door 402 does not frost, a vacuum heat insulation board (not shown in the figure) may be further disposed inside the inner door 402, so that the temperature of the outer surface of the inner door 402 is greater than 0 ℃. In order to overcome the negative pressure problem of the deep cooling compartment 112, a pressure balance hole (not shown in the figure) may be further formed on the door seal 440 of the inner door 402 to ensure that the inner door 402 can be opened smoothly.

Fig. 4 is a partially exploded schematic view of the double door 400 and the door frame 430 of the refrigerator 100 shown in fig. 3. Fig. 5 is a partially enlarged schematic view of fig. 4. In some embodiments, the refrigerator 100 of the present invention further includes: a door frame 430 and a mechanical locking mechanism. Door frame 430 is disposed at the front of tank 101 of deep cooling compartment 112. One end of the inner door 402 is connected to the cabinet 101, and the other end is detachably connected to the door frame 430 by a mechanical locking mechanism. By providing a separate door frame 430 in front of the tank 101 of the cryogenic compartment 112, the inner door 402 can be embedded within the tank 101. A seal strip is provided between the inner door body 402 and the door frame 430. Specifically, in order to ensure the sealing performance of the inner door body 402, a sealing strip is provided at the mating surface of the inner door body 402 and the door frame 430, and a sealing strip is also provided at the convex portion of the inner door body 402, i.e., a double door seal, which reduces the gap between the inner door body 402 and the door frame 430. Meanwhile, in order to prevent cold leakage, a seal may be provided between the upper portion of the inner door 402 and the general compartment 111.

In some embodiments, the inner door 402 and the chest 101 may be connected by at least two hinges 450. By connecting the inner door 402 to the box 101 with the hinge 450, the angle of the inner door 402 when opened can be ensured to reach 90 °. In the embodiment shown in FIG. 3, the inner door 402 is attached to the cabinet 101 by two hinges 450.

In some embodiments, the front end surface of the door frame 430 is formed with a locking groove 431. The mechanical locking mechanism comprises a first structural member 501, a second structural member 502, a third structural member 503 and a rotating rod 504, wherein a clamping joint 5121 is formed on a side end plate 512 of the first structural member 501, and the first structural member 501 is rotatably connected with the side end surface of the inner door body 402 through the third structural member 503 and the rotating rod 504; the second structural member 502 is connected to the door frame 430 and has a protrusion 521 extending to the slot 431. The inner door body 402 and the door frame 430 are hermetically fixed by moving the clamping head 5121 into the clamping groove 431 and fitting the bulge 521, and the inner door body 402 and the door frame 430 are separated by moving the clamping head 5121 out of the clamping groove 431. Through set up draw-in groove 431 on door frame 430, utilize the joint 5121 of mechanical locking mechanism to realize the fixed and separation of interior door body 402 and door frame 430, also realize closing and opening of interior door body 402, the structure is ingenious, conveniently controls.

Referring to fig. 5, the first structure 501 includes a front end plate 511 and a side end plate 512, and a through hole matching with the first rod (not shown) of the rotating rod 504 is formed on the side end plate 512. The third structural member 503 includes a front end plate and a side end plate, the side end plate is fixed to the inner door 402 by two mounting holes and a fixing member 530, a through hole for the rotating rod 504 to pass through is also formed between the two mounting holes corresponding to the through hole of the first structural member 501, and the through hole of the third structural member 503 is matched with the second rod portion (not shown in the figure) of the rotating rod 504. And the outer diameter of the first rod part of the rotating rod 504 is larger than that of the second rod part, that is, the outer diameter of the contact area of the rotating rod 504 and the first structural member 501 is larger than that of the contact area of the rotating rod 504 and the third structural member 503, so that the first structural member 501 can be connected with the inner door body 402 and can rotate at the same time. In addition, in order to make the installation of the third structural member 503 and the inner door 402 more stable, a gasket may be provided under the side end plate of the third structural member 503. In the embodiment shown in fig. 5, the first structural member 501 rotates in the front-rear direction, the latch 5121 is formed to extend downward and rearward, and the second structural member 502 has a flat plate portion provided with a mounting hole and a protrusion 521 extending upward from the flat plate portion. It is understood that the first structural member 501 may also be rotated in the up-down direction, in which case the locking groove 431 may be opened in the left-right direction, and the protrusion 521 may extend leftwards or rightwards.

In some embodiments, the front end surface of the inner door body 402 is formed with a recess 421; the front end plate 511 of the first structural member 501 extends into the recess 421, and the front side is provided with an indication plate 422. The front end plate 511 of the first structural member 501 is located in the concave portion 421, and can be used as a handle, so that the operation of a user is facilitated, the operation direction of the user can be reminded by arranging the indicating plate 422, and the use experience of the user is improved.

The utility model discloses refrigerator 100 is through utilizing stirling refrigerating system for this refrigerator 100 has cryrogenic compartment 112, and through setting up double door 400, can improve refrigerator 100's thermal insulation performance.

Further, the utility model discloses outer door body 401 and the mutual independence of inner door body 402 of double-layer door 400 of refrigerator 100 set up, and inner door body 402 sets up in the front side of cryrogenic compartment 112 for cryrogenic compartment 112 only can be opened when outer door body 401 and inner door body 402 are opened simultaneously, is particularly useful for same outer door body 401 of cryrogenic compartment 112 and ordinary compartment 111 sharing, can effectively reduce the user and get the hourglass cold of cryrogenic compartment 112 when article are put to ordinary compartment 111.

Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been shown and described in detail herein, many other variations and modifications can be made, consistent with the principles of the invention, which are directly determined or derived from the disclosure herein, without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be understood and interpreted to cover all such other variations or modifications.

Claims (10)

1. A refrigerator characterized by comprising:

the refrigerator comprises a box body, a storage chamber and a refrigerating chamber, wherein the storage chamber is limited in the box body and comprises at least one deep cooling chamber;

a Stirling refrigeration system including a Stirling cryocooler configured to provide cold to the cryogenic compartment; and

and the double-layer door is arranged on the front side of the at least one storage compartment and is used for opening and closing the storage compartment.

2. The refrigerator according to claim 1,

the double-layer door comprises an outer door body and an inner door body;

the inner door body is positioned on the inner side of the outer door body, is arranged on the front side of the deep cooling chamber and is used for opening and closing the deep cooling chamber; and the outer door body and the inner door body are arranged independently, so that the inner door body is kept closed when the outer door body is opened outwards.

3. The refrigerator of claim 2, further comprising:

the door frame is arranged at the front part of the box body of the deep cooling chamber; and

and one end of the inner door body is connected with the box body, and the other end of the inner door body is detachably connected with the door frame through the mechanical locking mechanism.

4. The refrigerator according to claim 3,

the front end face of the door frame is provided with a clamping groove;

the mechanical locking mechanism includes: the door comprises a first structural member, a second structural member, a third structural member and a rotary rod, wherein a clamping joint is formed on a side end plate of the first structural member, and the first structural member is rotatably connected with the side end surface of the inner door body through the third structural member and the rotary rod; the second structural part is connected with the door frame and is provided with a protruding part extending to the clamping groove; the clamping head is moved into the clamping groove and matched with the protruding portion to achieve sealing and fixing of the inner door body and the door frame, and the clamping head is moved out of the clamping groove to achieve separation of the inner door body and the door frame.

5. The refrigerator according to claim 4,

a concave part is formed on the front end face of the inner door body;

the front end plate of the first structural member extends into the concave part, and a sign is arranged on the front side of the front end plate.

6. The refrigerator according to claim 3,

the inner door body is connected with the box body through at least two hinges.

7. The refrigerator according to claim 3,

and a sealing strip is arranged between the inner door body and the door frame.

8. The refrigerator according to claim 2,

the distance between the inner door body and the outer door body is not more than 5 mm.

9. The refrigerator according to claim 2,

the inner door body is further configured to:

a vacuum heat insulation board is arranged in the inner door body; and/or

A pressure balance hole is formed in the door seal of the inner door body; and/or

And the outer surface of the inner door body is provided with a heating wire.

10. The refrigerator according to claim 2,

the storage chamber comprises at least one common chamber, and the common chamber is a refrigerating chamber, a freezing chamber or a temperature-changing chamber;

at least one common chamber is arranged above or below the deep cooling chamber; and is

The dual layer door is configured to: the size of the outer door body is larger than that of the inner door body, and the common compartment is opened and closed by the outer door body.

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