CN114636269A - Refrigerator with a door - Google Patents

Abstract

The present invention provides a refrigerator, including: the refrigerator comprises a refrigerator body, a storage compartment and a door, wherein at least one storage compartment is defined in the refrigerator body; the Stirling refrigerating system comprises a Stirling refrigerator and a cold guide device and is configured to provide cold for at least one storage chamber; the cold guide device comprises a first adapter, a second adapter, a cold guide heat pipe and a metal mesh; wherein the first adapter is thermally connected to the cold end of the Stirling refrigerator; one end of the cold conduction heat pipe is thermally connected with the second adapter, and the other end of the cold conduction heat pipe is thermally connected with a heat exchanger arranged in the storage room; the metal net is of a flexible structure and is clamped between the first adapter and the second adapter, one side of the metal net is attached to the first adapter, and the other side of the metal net is attached to the second adapter to be respectively in thermal connection with the first adapter and the second adapter. The refrigerator can ensure that the cold transfer effect is excellent, and simultaneously, the vibration of the cold transfer heat pipe is weakened, and the vibration noise is reduced.

Description

Refrigerator with a door

Technical Field

The invention relates to the field of refrigeration, in particular to a refrigerator.

Background

With the health emphasis of people, the household reserves of high-end food materials are 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. In the refrigerated refrigerator of current utilization stirling refrigerating system, all be with stirling refrigerator's cold head and inner bag rigid connection in order to guarantee to pass cold effect, this kind of mode can make stirling refrigerator's vibration directly transmit to inner bag department, leads to stirling refrigerating system and the vibration of inner bag combination department obvious, and vibration noise is big, influences the user and uses experience.

Disclosure of Invention

An object of the present invention is to provide a refrigerator having a stirling refrigerating system with low vibration noise.

A further object of the present invention is to provide a cooling device for a stirling refrigerating system of a refrigerator that is simple to assemble and has good cooling effect.

In particular, the present invention provides a refrigerator comprising:

the refrigerator comprises a refrigerator body, a storage compartment and a door, wherein at least one storage compartment is defined in the refrigerator body; and

the Stirling refrigerating system comprises a Stirling refrigerator and a cold guide device, and is configured to provide cold for at least one storage chamber; wherein

The cold guide device comprises a first adapter, a second adapter, a cold guide heat pipe and a metal mesh; the first adapter is thermally connected with the cold end of the Stirling refrigerator; one end of the cold conduction heat pipe is thermally connected with the second adapter, and the other end of the cold conduction heat pipe is thermally connected with a heat exchanger arranged in the storage room; the metal mesh is flexible structure, presss from both sides and locates between first adapter and the second adapter, and one side is leaned on first adapter, and the opposite side is leaned on the second adapter in order to form thermal connection respectively with first adapter and second adapter.

Optionally, the thickness of the metal mesh ranges from 2mm to 3 mm.

Optionally, the metal mesh is a mesh formed by an ordered or disordered weave of metal fibers.

Optionally, the metal fibers are coated with a thermally conductive grease therebetween.

Optionally, the metal mesh is a copper mesh or an aluminum mesh.

Optionally, the first adapter comprises a first mounting piece and a second mounting piece, wherein a first gap is formed in the first mounting piece, a second gap is correspondingly formed in the second mounting piece, and the cold end of the stirling refrigerator is clamped in a space defined by the first gap and the second gap;

the second adapter comprises a third mounting piece and a fourth mounting piece, wherein the third mounting piece is provided with a first pipe groove, the fourth mounting piece is correspondingly provided with a second pipe groove, and the cold-conducting heat pipe is clamped in a pipe hole defined by the first pipe groove and the second pipe groove; wherein

The metal mesh is attached to the first and/or second mounting element on one side and to the third and/or fourth mounting element on the other side.

Optionally, the first notch is formed at the bottom surface and the right side surface of the first mounting part, the second notch is formed at the bottom surface and the left side surface of the second mounting part, the cold end of the stirling cooler is thermally connected with the first adapter at the lower part of the first adapter, and the right side of the top surface of the second mounting part is lower than the left side so that a lap joint region is defined at the upper part of the second mounting part;

the first pipe groove is formed on the bottom surface of the third mounting part, and the second pipe groove is formed on the top surface of the fourth mounting part; the third mounting piece extends leftwards to the lap joint zone and defines a first gap with the lap joint zone; a second gap is defined between the fourth mounting part and the lower part of the second mounting part;

the metal mesh is clamped at the first gap and the second gap.

Optionally, the stirling refrigeration system further comprises:

a foam box configured to enclose a first portion of the first adapter and a cold end of the stirling cooler; and

a flexible insulating block configured to wrap the second portion of the first adapter, the metal mesh, and the second adapter.

Optionally, the foaming box is configured to form an opening on one side close to the metal mesh;

the flexible heat preservation piece includes body portion and bulge, and body portion parcel second adapter, bulge and opening adaptation are so that wrap up the metal mesh completely.

Optionally, the storage compartment comprises at least one cryogenic compartment, and the stirling refrigeration system is configured to provide cold to the cryogenic compartment; the refrigerator also comprises a double-layer door which is arranged at the front side of the deep cooling chamber and used for opening and closing the deep cooling chamber; wherein

The double-layer door comprises an outer door body and an inner door body, wherein the inner door body is positioned on the inner side of the outer door body, 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;

the front part of the box body of the deep cooling chamber is provided with a door frame, and the front end surface of the door frame is provided with a clamping groove;

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 a mechanical locking mechanism; wherein 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 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.

According to the refrigerator, the cold guide device of the Stirling refrigerating system is arranged to comprise the first adapter, the second adapter, the cold guide heat pipe and the metal mesh, and the first adapter is thermally connected with the cold end of the Stirling refrigerating machine; one end of the cold conduction heat pipe is thermally connected with the second adapter, and the other end of the cold conduction heat pipe is thermally connected with a heat exchanger arranged in the storage room; and set up the metal mesh into flexible construction, press from both sides and locate between first adapter and the second adapter, one side is pasted and is leaned on first adapter, and the opposite side is pasted and is leaned on the second adapter in order to become hot connection respectively with first adapter and second adapter, can guarantee to pass the vibration that cold effect is good make and lead cold heat pipe and receive stirling refrigerator even vibration of taking weaken, and the vibration noise reduces, promotes user's use and experiences.

Furthermore, the material, the size and the like of the metal net of the cold guide device are specially designed, so that the cold guide device can ensure the excellent cold transmission effect and simultaneously improve the damping effect.

Furthermore, the foaming box is arranged on the first part of the first adapter and the outer side of the cold end of the Stirling refrigerator for heat preservation, the flexible heat preservation block is arranged on the second part of the first adapter, the metal net and the outer side of the second adapter for heat preservation, and heat preservation mechanisms with different structures are arranged on different parts for further enhancing the cold transmission effect of the cold guide device.

Furthermore, the double-layer door can improve the heat preservation performance of the refrigerator, and particularly when the cryogenic compartment and the common compartment share the same outer door body, when a user takes and places articles from the common compartment, the inner door body keeps a closed state when the outer door body is opened, the cryogenic compartment is still sealed, and cold leakage can be effectively reduced.

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 invention will be described in detail hereinafter, by way of illustration and not 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 to scale. In the drawings:

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

Fig. 2 is a partial rear view schematic diagram of the refrigerator shown in fig. 1.

Fig. 3 is a partially exploded schematic view of the refrigerator shown in fig. 1.

Fig. 4 is a perspective view illustrating a part of components of a cold guide apparatus of the refrigerator shown in fig. 1.

Fig. 5 is an exploded schematic view of a part of components of a cold guide apparatus of the refrigerator shown in fig. 4.

Fig. 6 is an exploded view of the deep cooling inner container and the double door of the refrigerator shown in fig. 1.

Fig. 7 is a partially exploded schematic view of a double door and a door frame of the refrigerator shown in fig. 6.

Fig. 8 is a partially enlarged schematic view of fig. 7.

Detailed Description

Fig. 1 is a schematic perspective view of a refrigerator 100 according to an embodiment of the present invention. Fig. 2 is a partial rear view schematic diagram of the refrigerator 100 shown in fig. 1. Fig. 3 is a partially exploded schematic view of the refrigerator 100 shown in fig. 1. Fig. 4 is a perspective view of a part of the components of the cold guide device 303 of the refrigerator 100 shown in fig. 1 (without the cold guide heat pipe 332). Fig. 5 is an exploded view of a part of the components of the cold conduction device 303 of the refrigerator 100 shown in fig. 4 (without the cold conduction heat pipe 332 and the metal mesh 403).

The refrigerator 100 of the embodiment of the present invention includes: a cabinet 101 and a stirling refrigeration system. 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 liner defines at least one storage compartment and may include at least one common liner and at least one cryogenic liner 113, wherein the common liner defines a common compartment 111 and the cryogenic liner 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). 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.

The stirling refrigeration system may include a stirling cooler 300 and a cold sink 303 configured to provide cold to at least one of the storage compartments. In the refrigerator 100 shown in fig. 1, the stirling refrigeration system provides cold to the cryogenic compartment 112. Referring to fig. 2 and 3, the stirling cooler 300 may include a casing, which may be composed of a main body portion 301 and a cylindrical portion 302, a cylinder, a piston, and a driving mechanism that drives the piston to move. The drive 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. In an embodiment of the present invention, the cold guide device 303 may include a first adapter 401, a second adapter 402, a cold guide heat pipe 332, and a metal mesh 403; wherein the first adapter 401 is thermally connected to the cold end of the stirling cooler; one end of the cold conduction heat pipe 332 is thermally connected with the second adapter 402, and the other end is thermally connected with a heat exchanger arranged in the storage compartment; the metal mesh 403 is a flexible structure, and is sandwiched between the first adapter 401 and the second adapter 402, and one side of the metal mesh abuts against the first adapter 401, and the other side abuts against the second adapter 402 to form thermal connections with the first adapter 401 and the second adapter 402, respectively.

In the conventional refrigerator 100 that utilizes the stirling refrigerating system for refrigeration, in order to ensure the cold energy transfer, a conventional design idea of a technician is to rigidly connect the cold head of the stirling refrigerator 300 with the heat exchanger in the storage compartment. For example, a fixing member is disposed at the cold end of the stirling cooler 300, one end of the cold conduction heat pipe 332 is fixed to the fixing member to be connected to the cold end of the stirling cooler 300, and the other end of the cold conduction heat pipe 332 is fixed to a heat exchanger disposed in the storage compartment to be thermally connected. The inventor finds that although the cold quantity transmission can be guaranteed through the structure in the experiment, the vibration of the Stirling refrigerator 300 can be directly transmitted to the inner container, so that the cold guide heat pipe 332 is very serious in vibration along with the Stirling refrigerator 300, the vibration noise is large, the user use experience is influenced, meanwhile, the connection structure of the cold guide heat pipe 332 and the heat exchanger can be easily damaged, the subsequent maintenance is complex, and the maintenance cost is high. The inventor breaks the concept and creatively proposes that the cold guide device 303 comprises a first adapter 401, a second adapter 402, a cold guide heat pipe 332 and a metal mesh 403, wherein the first adapter 401 is thermally connected with the cold end of the Stirling refrigerator; one end of the cold conduction heat pipe 332 is thermally connected to the second adapter 402, and the other end is thermally connected to the heat exchanger; the metal mesh 403 is set to be a flexible structure and clamped between the first adapter 401 and the second adapter 402, one side of the metal mesh is attached to the first adapter 401, the other side of the metal mesh is attached to the second adapter 402 to be respectively in thermal connection with the first adapter 401 and the second adapter 402, and a buffer area is formed between the first adapter 401 and the second adapter 402 due to the flexible structure of the metal mesh 403, so that the cold conduction heat pipe 332 and the cold end of the Stirling refrigerator 300 are flexibly and indirectly connected, the cold conduction heat pipe 332 is weakened by vibration of the Stirling refrigerator 300 while the good cold conduction effect is ensured, vibration noise is reduced, and user experience is improved.

Referring to fig. 2, the stirling refrigeration system may also include a heat sink 304. 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 further 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.

In some embodiments, the thickness of the metal mesh 403 ranges from 2mm to 3 mm. When the thickness of the metal mesh 403 is within this range, the cold transfer effect and the shock absorption effect can be ensured, and the metal mesh 403 can be conveniently fixed to the first adapter 401 and the second adapter 402. Here, the thickness of the metal mesh 403 refers to a final thickness of the metal mesh 403 after being sandwiched between the first adapter 401 and the second adapter 402 and fixedly mounted, that is, a final width of a gap between the first adapter 401 and the second adapter 402. The initial thickness of the metal mesh 403 is typically greater than 2mm-3mm, while the final thickness is limited to 2mm-3mm by compressing the metal mesh 403 while it is clamped in place, the flexible structure of the metal mesh 403, i.e. the metal mesh 403, being tightly compressed to still have some flexibility. The metal net 403 may be a net formed by weaving metal wires with uniform thickness, or a net formed by weaving metal fibers orderly or disorderly, and the latter is preferable to further increase the cold conducting area of the metal net 403. In addition, a heat conductive grease (not shown) may be coated between the metal fibers to further enhance the cooling effect of the metal mesh 403.

In some embodiments, the metal mesh 403 is a copper mesh or an aluminum mesh. The metal mesh 403 has better damping effect and cold transmission effect than aluminum parts when made of copper, but the cost of the aluminum parts is lower, so that the aluminum parts are suitable for market popularization and application. The first adapter 401 and the second adapter 402 may be made of copper, aluminum coated with copper, copper coated with aluminum, or the like, and the aluminum coated with copper is preferable in terms of cost, weight, thermal conductivity, and the like.

Referring to fig. 4 and 5, in some embodiments, the first adapter 401 includes a first mounting member 411 and a second mounting member 412, wherein the first mounting member 411 has a first notch 4110 formed therein, the second mounting member 412 has a second notch (not shown) formed therein, and the cold end of the stirling cooler is clamped in a space defined by the first notch 4110 and the second notch; the second adapter 402 comprises a third mounting member 421 and a fourth mounting member 422, wherein the third mounting member 421 is provided with a first pipe groove 4210, the fourth mounting member 422 is correspondingly provided with a second pipe groove 4220, and the cold conducting heat pipe 332 is clamped in the pipe hole 700 defined by the first pipe groove 4210 and the second pipe groove 4220; wherein the metal mesh 403 bears with one side against the first mounting element 411 and/or the second mounting element 412 and with the other side against the third mounting element 421 and/or the fourth mounting element 422. In the embodiment of the invention, the first adapter 401 is arranged to comprise the first mounting part 411 and the second mounting part 412, the second adapter 402 is arranged to comprise the third mounting part 421 and the fourth mounting part 422, one side of the metal mesh 403 abuts against the first mounting part 411 and/or the second mounting part 412, and the other side abuts against the third mounting part 421 and/or the fourth mounting part 422, so that the whole cold guide device 303 and the Stirling refrigerator 300 are simple and stable in assembly and good in cold transfer effect.

With continued reference to fig. 4 and 5, as previously described, to facilitate transfer of cold from the cold end of stirling cooler 300 to cryogenic compartment 112, the cold end is disposed above. First notches 4110 are formed at the bottom and right side surfaces of the first mounting part 411, second notches are formed at the bottom and left side surfaces of the second mounting part 412, the cold end of the stirling cooler is thermally connected to the first adapter 401 at the lower portion of the first adapter 401, and the right side of the top surface of the second mounting part 412 is lower than the left side such that a lap zone is defined at the upper portion of the second mounting part 412; a first tube groove 4210 is formed at a bottom surface of the third mounting member 421, and a second tube groove 4220 is formed at a top surface of the fourth mounting member 422; the third mounting member 421 extends leftward to the overlapping region and defines a first gap with the overlapping region; a second gap is defined between the fourth mounting element 422 and a lower portion of the second mounting element 412; the metal mesh 403 is sandwiched at the first gap and the second gap. By providing the first adapter 401 and the second adapter 402 with overlapping zones, the area of the oppositely disposed portions of the first adapter 401 and the second adapter 402 can be increased, thereby increasing the cold conducting area of the metal mesh 403, and simultaneously improving the shock absorbing effect. Further, a first fixing hole 4111 is provided in the left-right direction of the first mounting member 411, a second fixing hole (not shown) is provided in the second mounting member 412 corresponding to the first fixing hole 4111, and the first mounting member 411 and the second mounting member 412 are fixed by fitting the first fixing member 413 to the first fixing hole 4111 and the second fixing hole. Third fixing holes 4122 are vertically provided in the second mounting member 412, fourth fixing holes 4212 are provided in the third mounting member 421 corresponding to the third fixing holes 4122, fifth fixing holes 4211 are also vertically provided in the third mounting member 421, sixth fixing holes 4221 are provided in the fourth mounting member 422 corresponding to the fifth fixing holes 4211, the third mounting member 421 and the second mounting member 412 are fixed by the second fixing members 423 being fitted in the fourth fixing holes 4212 and the third fixing holes 4122, and the third mounting member 421 and the fourth mounting member 422 are fixed by the second fixing members 423 being fitted in the fifth fixing holes 4211 and the sixth fixing holes 4221.

In order to further enhance the cold transfer effect, the embodiment of the present invention further performs heat preservation on the cold guide device 303. In some embodiments, the stirling refrigeration system further comprises a foam cassette 500 encasing the first portion of the first adapter 401 and the cold end of the stirling cooler 300, and a flexible thermal block 600 encasing the second portion of the first adapter 401, the metal mesh 403, and the second adapter 402. In the embodiment of the invention, the foaming box 500 is arranged at the first part of the first adapter 401 and the outer side of the cold end of the Stirling refrigerator 300 for heat preservation, the flexible heat preservation block 600 is arranged at the second part of the first adapter 401, the metal net 403 and the outer side of the second adapter 402 for heat preservation, and heat preservation mechanisms with different structures are arranged on different parts for further enhancing the cold conduction effect of the cold conduction device 303.

As shown in fig. 3, the frothing box 500 comprises an upper box 501 and a lower box 502, wherein the upper box 501 has a notch (not shown) on its right side, the lower box 502 has a notch (not shown) on its right side and an opening (not shown) on its bottom wall for passing through the cold end, the upper box 501 and the lower box 502 cooperate to enclose the first portion of the first adapter 401 and the cold end of the stirling cooler 300, and the two notches together define the right side opening on the right side. The flexible insulating block 600 includes a body portion 601 that encases the second adapter 402 and a projection 602 that fits into the right opening of the foam cartridge 500 to completely encase the second portion of the first adapter 401 and the metal mesh 403. The flexible insulating block 600 may be, for example, a low temperature flexible sponge. In order to prevent the outer surface of the foaming box 500 from generating condensation and ensure good heat insulation, the thickness of the foaming box 500 is such that the distance from the first adapter 401 to the outer surface of the foaming box 500 is greater than 40 mm.

In some embodiments, the refrigerator 100 of the embodiments of the present invention further includes: and a double door 800 provided in front of at least one storage compartment to open and close the storage compartment. Fig. 6 is an exploded view of the deep cooling inner container 113 and the double door 800 of the refrigerator 100 shown in fig. 1. The double-layer door 800 comprises an outer door body 801 and an inner door body 802; the inner door body 802 is positioned on the inner side of the outer door body 801, 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 801 and the inner door body 802 are arranged independently of each other, so that the inner door body 802 is kept closed when the outer door body 801 is opened outward. The refrigerator 100 according to the embodiment of the present invention may improve the heat insulating performance of the refrigerator 100 by providing the double door 800. Particularly, because the storage 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 801, the double-layer door 800 is configured to include the outer door body 801 and the inner door body 802 which are independent of each other, the size of the outer door body 801 is larger than that of the inner door body 802, and the common compartment 111 is opened and closed by the outer door body 801, so that when a user takes and places articles from and into the common compartment 111, the inner door body 802 can be kept in a closed state under the condition that the outer door body 801 is opened, that is, the cryogenic compartment 112 is still sealed, and cold leakage can be effectively reduced.

The distance between the inner door body 802 and the outer door body 801 is not more than 5 mm. The distance is too large, and the frosting risk is large. In addition, the outer surface of the inner door body 802 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 body 802 does not frost, a vacuum heat insulation board (not shown in the figure) can be further arranged inside the inner door body 802, so that the temperature of the outer surface of the inner door body 802 is higher 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 840 of the inner door body 802 to ensure that the inner door body 802 can be opened smoothly.

Fig. 7 is a partially exploded schematic view of the double door 800 and the door frame 830 of the refrigerator 100 shown in fig. 6. Fig. 8 is a partially enlarged schematic view of fig. 7. In some embodiments, the refrigerator 100 of the embodiments of the present invention further includes: a door frame 830 and a mechanical locking mechanism. Door frame 830 is provided at the front of tank 101 of deep cooling compartment 112. One end of the inner door 802 is connected to the cabinet 101, and the other end is detachably connected to the door frame 830 via a mechanical locking mechanism. By providing a separate door frame 830 in the front of the casing 101 of the deep cooling compartment 112, the inner door 802 can be embedded in the casing 101. A sealing strip is provided between the inner door body 802 and the door frame 830. Specifically, in order to ensure the sealing performance of the inner door body 802, a sealing strip is provided on the mating surface of the inner door body 802 and the door frame 830, and a sealing strip is also provided on the convex portion of the inner door body 802, i.e., a double door seal, which reduces the gap between the inner door body 802 and the door frame 830. Meanwhile, in order to prevent cold leakage, a sealing strip may be provided between the upper portion of the inner door body 802 and the general compartment 111.

The inner door 802 and the cabinet 101 may be connected by at least two hinges 850. The inner door body 802 is connected with the box body 101 through the hinge 850, so that the angle of the inner door body 802 can be ensured to reach 90 degrees when the inner door body is opened. In the embodiment shown in FIG. 8, the inner door 802 is connected to the chest 101 by two hinges 850.

The front end surface of the door frame 830 is provided with a clamping groove 831. The mechanical locking mechanism comprises a first structural member 901, a second structural member 902, a third structural member 903 and a rotating rod 904, wherein a clamping head 9121 is formed on a side end plate 912 of the first structural member 901, and the first structural member 901 is rotatably connected with the side end surface of the inner door body 802 through the third structural member 903 and the rotating rod 904; the second structure 902 is connected to the door frame 830 and has a protrusion 921 extending to the locking notch 831. The inner door body 802 and the door frame 830 are hermetically fixed by moving the clamping head 9121 into the clamping groove 831 and fitting the clamping head 9121 with the protruding portion 921, and the inner door body 802 and the door frame 830 are separated by moving the clamping head 9121 out of the clamping groove 831. Through set up draw-in groove 831 on door frame 830, utilize the joint 9121 of mechanical locking mechanism to realize interior door body 802 and door frame 830 fixed and separation, also realize closing and opening of interior door body 802, the structure is ingenious, conveniently controls.

Referring to fig. 8, the first structure 901 includes a front end plate 911 and a side end plate 912, and a through hole matching with a first rod (not shown) of the rotating rod 904 is formed on the side end plate 912. The third structural element 903 comprises a front end plate and a side end plate, the side end plate is fixed with the inner door body 802 by two mounting holes and a fixing element 930, a through hole for the rotating rod 904 to pass through is also formed between the two mounting holes corresponding to the through hole of the first structural element 901, and the through hole of the third structural element 903 is matched with a second rod part (not shown in the figure) of the rotating rod 904. And the outer diameter of the first rod part of the rotating rod 904 is larger than that of the second rod part, that is, the outer diameter of the contact area of the rotating rod 904 and the first structural member 901 is larger than that of the contact area of the rotating rod 904 and the third structural member 903, so that the first structural member 901 can be kept connected with the inner door body 802 and can rotate at the same time. In addition, in order to make the third structural element 903 and the inner door 802 more firmly installed, a gasket may be disposed below the side end plate of the third structural element 903. In the embodiment shown in fig. 5, the first structural member 901 rotates in the front-rear direction, the snap-fit joint 9121 is formed to extend downward and rearward, and the second structural member 902 has a flat plate portion provided with a mounting hole and a protruding portion 921 extending upward from the flat plate portion. It is understood that the first structural member 901 can also rotate in the up-down direction, in this case, the locking slot 831 can be opened in the left-right direction, and the protruding portion 921 can extend leftwards or rightwards.

With continued reference to fig. 8, the front end surface of the inner door body 802 is formed with a recess 821; the front end plate 911 of the first structural member 901 extends into the recess 821, and an indicator 822 is provided on the front side. The front end plate 911 of the first structural member 901 can be used as a handle in the concave part 821, so that the operation of a user is facilitated, the operation direction of the user can be reminded by arranging the indicating plate 822, and the use experience of the user is improved.

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

Claims (10)

1. A refrigerator, comprising:

the refrigerator comprises a refrigerator body, a storage compartment and a door, wherein at least one storage compartment is defined in the refrigerator body; and

the Stirling refrigerating system comprises a Stirling refrigerator and a cold guide device and is configured to provide cold for at least one storage chamber; wherein

The cold guide device comprises a first adapter, a second adapter, a cold guide heat pipe and a metal mesh; the first adapter is thermally connected with the cold end of the Stirling refrigerator; one end of the cold conduction heat pipe is thermally connected with the second adapter, and the other end of the cold conduction heat pipe is thermally connected with a heat exchanger arranged in the storage room; the metal net is of a flexible structure and is clamped between the first adapter and the second adapter, one side of the metal net is attached to the first adapter, and the other side of the metal net is attached to the second adapter so as to be respectively in thermal connection with the first adapter and the second adapter.

2. The refrigerator according to claim 1,

the thickness of the metal net ranges from 2mm to 3 mm.

3. The refrigerator according to claim 1,

the metal net is formed by orderly or disorderly weaving metal fibers.

4. The refrigerator according to claim 3,

and heat conducting grease is coated between the metal fibers.

5. The refrigerator according to claim 1,

the metal net is a copper net or an aluminum net.

6. The refrigerator according to claim 1,

the first adapter comprises a first mounting piece and a second mounting piece, wherein a first gap is formed in the first mounting piece, a second gap is correspondingly formed in the second mounting piece, and the cold end of the Stirling refrigerator is clamped in a space defined by the first gap and the second gap;

the second adapter comprises a third mounting piece and a fourth mounting piece, wherein a first pipe groove is formed in the third mounting piece, a second pipe groove is correspondingly formed in the fourth mounting piece, and the cold-conducting heat pipe is clamped in a pipe hole defined by the first pipe groove and the second pipe groove; wherein

One side of the metal mesh is attached to the first and/or second mounting element and the other side is attached to the third and/or fourth mounting element.

7. The refrigerator according to claim 6,

the first notch is formed at the bottom surface and the right side surface of the first mounting part, the second notch is formed at the bottom surface and the left side surface of the second mounting part, the cold end of the Stirling refrigerator is thermally connected with the first adapter at the lower part of the first adapter, and the right side of the top surface of the second mounting part is lower than the left side so that a lap joint region is defined at the upper part of the second mounting part;

the first pipe groove is formed on the bottom surface of the third mounting part, and the second pipe groove is formed on the top surface of the fourth mounting part; the third mounting piece extends leftwards to the lap zone and defines a first gap with the lap zone; a second gap is defined between the fourth mounting part and the lower part of the second mounting part;

the metal mesh is clamped at the first gap and the second gap.

8. The refrigerator according to claim 1,

the stirling refrigeration system further comprising:

a foam box configured to enclose a first portion of the first adapter and a cold end of the Stirling cooler; and

a flexible insulating block configured to encase the second portion of the first adapter, the metal mesh, and the second adapter.

9. The refrigerator of claim 8, wherein,

the foaming box is configured to be provided with an opening at one side close to the metal net;

the flexible heat preservation block comprises a body part and a protruding part, the body part wraps the second adapter, and the protruding part is matched with the opening so as to completely wrap the metal mesh.

10. The refrigerator according to claim 1,

the storage chamber comprises at least one cryogenic chamber, and the Stirling refrigeration system is configured to provide cold to the cryogenic chamber; the refrigerator also comprises a double-layer door which is arranged at the front side of the deep cooling chamber and used for opening and closing the deep cooling chamber; wherein

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, 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;

the front part of the box body of the deep cooling chamber is provided with a door frame, and the front end face of the door frame is provided with a clamping groove;

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 a mechanical locking mechanism; wherein 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 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.

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