CN214276192U - Refrigerator with a door - Google Patents

Abstract

The utility model provides a refrigerator, include: the refrigerator comprises a box body, a first storage chamber and a second storage chamber are defined in the box body, and the second storage chamber is positioned below the first storage chamber; the vapor compression refrigeration system is configured to provide cold energy for at least the first storage compartment; and the Stirling refrigerating system comprises a Stirling refrigerating machine and a heat exchanger, wherein the Stirling refrigerating machine is arranged behind the first storage chamber, the heat exchanger is arranged in the second storage chamber, and the cold end of the Stirling refrigerating machine is thermally connected with the heat exchanger to provide cold for the second storage chamber. The utility model discloses a refrigerator only needs to change the structure of first storing room or change the structure of the shell of first storing room correspondence department and can accomplish and set up the stirling refrigerator in the refrigerator, need not to change the overall arrangement in original press storehouse.

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. The Stirling refrigerating system applied in the existing refrigerator is usually provided with a Stirling refrigerator in a press cabin, and the layout and the structure of the original press cabin need to be changed more, so that the production efficiency of the refrigerator is reduced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an utilize cryogenic refrigerator of stirling refrigerator that convenient setting, production efficiency are high.

A further object of the utility model is to provide an utilize cryogenic refrigerator of stirling refrigerator that the noise is low, the radiating effect is good, pass cold efficiently.

Particularly, the utility model provides a refrigerator, include:

the refrigerator comprises a box body, a first storage chamber and a second storage chamber are defined in the box body, and the second storage chamber is positioned below the first storage chamber;

the vapor compression refrigeration system is configured to provide cold energy for at least the first storage compartment; and

stirling refrigerating system, including Stirling refrigerator and heat exchanger, wherein the Stirling refrigerator sets up in the rear of first storing room, and the heat exchanger sets up indoor between the second storing, and the cold junction and the heat exchanger thermal connection of Stirling refrigerator are in order to provide cold volume for the room between the second storing.

Optionally, a horizontal projection of the rear wall surface of the liner of the first storage compartment is in front of a horizontal projection of the rear wall surface of the liner of the second storage compartment, so that a placement area is defined between the rear wall surface of the liner of the first storage compartment and the top wall surface of the liner of the second storage compartment; the stirling cooler is disposed at the rest area.

Optionally, the refrigerator further comprises: the box body is arranged at the placing area;

the rear wall surface of the box body is opened, an accommodating space is defined between the box body and the rear wall plate of the shell of the refrigerator, and the Stirling refrigerator is arranged in the accommodating space.

Optionally, the stirling cooler comprises a casing, a cylinder, a piston, a driving mechanism for driving the piston to move, and a first heat dissipation fan; the shell comprises a main body part and a cylindrical part, the driving mechanism is arranged in the main body part, the piston is configured to reciprocate in the cylindrical part, so that a cold end is formed at the tail end of the cylindrical part, the main body part is provided with an opening, and the first cooling fan is arranged at the opening.

Optionally, the first cooling fan is arranged on the rear wall surface of the main body part;

a first ventilation opening is formed in the position, corresponding to the first heat dissipation fan, of the rear wall plate of the shell;

and a second ventilation opening is formed in the rear wall plate of the shell corresponding to the joint of the main body part and the cylindrical part.

Optionally, the stirling refrigeration system further comprises: and the upper end cover of the cold guide piece is buckled outside the cold end to be thermally connected with the cold end, and the lower end of the cold guide piece passes through the inner container of the second storage chamber to be thermally connected with the heat exchanger.

Optionally, the heat exchanger comprises a first cold conduction plate and a plurality of cold conduction fins; wherein first cold guide plate transversely sets up in the inboard of the inner bag of second storing compartment, and a plurality of cold guide fins form from first cold guide plate downwardly extending, lead the lower extreme of cold spare and the upper portion thermal connection of first cold guide plate.

Optionally, the heat exchanger further comprises a second cold conducting plate arranged at the rear part of the first cold conducting plate and the plurality of cold conducting fins;

and one part of the evaporation tube of the vapor compression refrigeration system passes through the liner of the second storage chamber and is attached to the rear surface of the second cold conduction plate, so that the second storage chamber receives the cold energy of the vapor compression refrigeration system.

Optionally, a press cabin is defined at the bottom of the rear side of the box body;

the compressor and the condenser of the vapor compression refrigeration system are sequentially arranged in the compressor bin in the transverse direction; and a second heat radiation fan is also arranged between the compressor and the condenser.

Optionally, the refrigerator further comprises:

the air channel cover plate is arranged on the inner side of the inner container of the second storage compartment, a cavity is defined between the air channel cover plate and the inner container of the second storage compartment, the heat exchanger is positioned in the cavity, and an air supply opening is formed in the front side of the air channel cover plate; and

and the air supply fan is arranged corresponding to the air supply outlet and used for promoting the airflow to flow.

The utility model discloses a refrigerator sets up the rear at first storing room through the stirling refrigerator with stirling refrigerating system for this refrigerator only needs to change the structure of first storing room or change the structure of the shell of first storing room correspondence department and can accomplish and set up the stirling refrigerator in the refrigerator, need not to change the overall arrangement in original press storehouse, and production efficiency is high.

Further, the utility model discloses a refrigerator still includes the box body, the back wall of box body open and with the refrigerator the shell between the back wallboard inject accommodation space, set up the stirling refrigerator in accommodation space, can make the stirling refrigerator be in roughly sealed space, the noise abatement transmission.

Further, the utility model discloses a refrigerator is through making first cooling fan be in the back wall department of box body, corresponds first cooling fan department on the back wallboard of shell and has seted up first vent, corresponds the junction of main part and drum portion on the back wallboard of shell and has seted up the second vent, is favorable to stirling refrigerator's heat dissipation.

Further, the utility model discloses a stirling refrigerating system of refrigerator is still including leading cold spare, and the upper end cover through leading cold spare is detained and is come with cold junction thermal connection in the outside of cold junction, and the lower extreme of leading cold spare passes the inner bag and the heat exchanger thermal connection of room between the second storing for the cold distance of biography is short, improves and passes cold efficiency.

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 part of the components of the refrigerator shown in fig. 2.

Fig. 4 is a schematic cross-sectional view of part of components of the refrigerator shown in fig. 2.

Fig. 5 is an exploded schematic view of a double door and a door frame of the refrigerator shown in fig. 1.

Fig. 6 is a partially enlarged schematic view of fig. 5.

Detailed Description

In the following description, the orientation or positional relationship indicated by "front", "rear", "upper", "lower", "left", "right", etc. is an orientation based on the refrigerator 100 itself as a reference, such as the direction indicated in fig. 2.

Fig. 1 is a schematic perspective view of a refrigerator 100 according to an embodiment of the present invention. Fig. 2 is a partial perspective view of the refrigerator 100 shown in fig. 1. Fig. 3 is an exploded view of part of the components of the refrigerator 100 shown in fig. 2. Fig. 4 is a schematic cross-sectional view of a portion of the components of the refrigerator 100 shown in fig. 2.

The refrigerator 100 of the embodiment of the present invention may generally include: a cabinet 101, a vapor compression refrigeration system, and a stirling refrigeration system. A first storage compartment 111 and a second storage compartment 112 are defined in the box body 101, and the second storage compartment 112 is located below the first storage compartment 111. The vapor compression refrigeration system is configured to provide refrigeration to at least the first storage compartment 111. The vapor compression refrigeration system may include a compressor 201, a condenser 202, a throttling element, an evaporator tube 205, and the like. The Stirling refrigerating system comprises a Stirling refrigerator 300 and a heat exchanger 305, wherein the Stirling refrigerator 300 is arranged behind the first storage room 111, the heat exchanger 305 is arranged in the second storage room 112, and a cold end 302 of the Stirling refrigerator 300 is thermally connected with the heat exchanger 305 to provide cold for the second storage room 112. The utility model discloses refrigerator 100 sets up the rear at first storing room 111 through stirling refrigerator 300 with stirling refrigerating system for this refrigerator 100 only needs the structure of changing first storing room 111 or changes the structure of the shell 115 that first storing room 111 corresponds the department and can accomplish and set up stirling refrigerator 300 in refrigerator 100, need not to change the overall arrangement in the press storehouse of original refrigerator, makes whole production efficiency improve.

The first storage chamber 111 is cooled by a vapor compression refrigeration system, and can be a refrigeration chamber with the preservation temperature of 2-9 ℃, a freezing chamber with the preservation temperature of-20-16 ℃ or a variable temperature chamber. The second storage chamber 112 is at least cooled by a Stirling refrigerating system, and the storage temperature can be-14 ℃ to-80 ℃. In the refrigerator 100 shown in fig. 1, the refrigerator 100 is a cross-door refrigerator, and the cabinet 101 includes a casing 115, an inner container disposed in the casing 115, and a heat insulating layer disposed between the casing 115 and the inner container. The inner container comprises four inner containers, and correspondingly and respectively defines a first storage chamber 111 positioned above the left side of the lower part, a second storage chamber 112 positioned below the left side of the lower part, a third storage chamber 116 positioned on the right side of the lower part, and a fourth storage chamber 117 positioned on the upper part. In the refrigerator 100 shown in fig. 1, the first storage compartment 111 is a freezing compartment, the second storage compartment 112 is a deep cooling compartment, the third storage compartment 116 is a variable temperature compartment, and the fourth storage compartment 117 is a refrigerating compartment. It is understood that a plurality of sets of the first storage compartment 111 and the second storage compartment 112 may be provided in the refrigerator 100, and a plurality of stirling refrigeration systems may be provided correspondingly. For example, the right portion of the lower portion of the refrigerator 100 shown in fig. 1 is provided in the same structure as the left portion of the lower portion, and is also composed of a first storage compartment 111 and a second storage compartment 112 located below the first storage compartment.

In some embodiments, the refrigerator 100 of the present invention further includes: an air duct cover 306 and an air supply fan (not shown). The air duct cover 306 is disposed inside the inner container 113 of the second storage compartment 112, and defines a cavity with the inner container 113 of the second storage compartment 112, the heat exchanger 305 is located in the cavity, and an air supply outlet (not shown) is opened at the front side of the air duct cover 306. The air supply fan is arranged corresponding to the air supply opening and used for promoting airflow to flow.

As shown in fig. 2 and 3, in some embodiments, the horizontal projection of the rear wall of the inner container 114 of the first compartment 111 is in front of the horizontal projection of the rear wall of the inner container 113 of the second compartment 112, so as to define a resting area between the rear wall of the inner container 114 of the first compartment 111 and the top wall of the inner container 113 of the second compartment 112; the stirling cooler 300 is provided at the rest area. The utility model discloses refrigerator 100 is in the front of the horizontal projection of the back wall of inner bag 113 of second storing room 112 through the horizontal projection that sets the back wall to inner bag 114 with first storing room 111 for this refrigerator 100 only needs to shrink before first storing room 111 and reduces a part and can accomplish and set up stirling refrigerator 300 in refrigerator 100, and refrigerator 100's back wallboard 102's whole outward appearance still keeps leveling, pleasing to the eye.

With continued reference to fig. 2 and 3, in some embodiments, the refrigerator 100 further includes a box 103. The box 103 is provided at the rest area. The rear wall surface of the box body 103 is opened and defines an accommodation space with the rear wall plate 102 of the casing 115 of the refrigerator 100, and the stirling cooler 300 is disposed in the accommodation space. The utility model discloses refrigerator 100 is through setting up box body 103, make the rear wall of box body 103 open and with inject accommodation space between the back wallboard 102 of refrigerator 100's shell 115, set up stirling refrigerator 300 in accommodation space, can make stirling refrigerator 300 be in roughly sealed space, the noise abatement transmission. As shown in fig. 3, the box body 103 has a top wall panel 131, a front wall panel 132, a left wall panel 133, a right wall panel 134 and a bottom wall panel 135, the bottom wall panel 135 having an opening therein through which the cold end 302 passes for thermal connection with a heat exchanger 305. Through seting up the opening on diapire board 135, cold junction 302 passes the opening for stirling refrigerator 300's cold junction 302 is down, and cold junction 302 is more close second storing compartment 112, and then can shorten and pass cold distance, improves and passes cold efficiency.

In some embodiments, the stirling cooler 300 includes a housing 301, a cylinder (not shown), a piston (not shown), a driving mechanism (not shown) for driving the piston to move, and a first heat rejection fan 304. The housing 301 includes a main body portion 311 and a cylindrical portion 312. The driving mechanism is provided in the main body portion 311. The piston is configured to reciprocate within cylinder 312 such that a cold end 302 is formed at the end of cylinder 312. The main body 311 has an opening, and the first cooling fan 304 is disposed at the opening. The heat generated by the stirling cooler 300 during operation can be dissipated as quickly as possible by the provision of the first heat rejection fan 304. Preferably, an opening is formed in a rear wall surface of the main body portion 311, so that the first heat dissipation fan 304 is located on the rear wall surface of the main body portion 311; a first ventilation opening 121 is formed on the rear wall plate 102 of the housing 115 corresponding to the first heat dissipation fan 304; the rear wall plate 102 of the housing 115 has a second ventilation opening 122 formed at a position corresponding to a connection between the body portion 311 and the cylindrical portion 312. The utility model discloses refrigerator 100 is through making first cooling fan 304 be in the back wall of main part 311, corresponds first cooling fan 304 department on shell 115's back wallboard 102 and has seted up first vent 121, has seted up second vent 122 in the junction that corresponds main part 311 and drum portion 312 on shell 115's back wallboard 102, is favorable to the air current to flow, promotes stirling refrigerator 300's heat dissipation.

As shown in fig. 4, the stirling refrigeration system further comprises: and the upper end of the cold guide member 303 is covered and buckled outside the cold end 302 to be thermally connected with the cold end 302, and the lower end of the cold guide member passes through the inner container 113 of the second storage compartment 112 to be thermally connected with the heat exchanger 305. Through setting up cold conduction piece 303 to detain cold conduction piece 303's upper end cover in the outside of cold junction 302 come with cold junction 302 thermal connection, the lower extreme passes inner bag 113 and the thermal connection of heat exchanger 305 of second storing compartment 112, and it is short to further shorten cold distance of biography, improves and passes cold efficiency. The cold conductive member 303 may be a thermally conductive metal member, such as an aluminum alloy member.

With continued reference to fig. 4, in some embodiments, the heat exchanger 305 includes a first cold conducting plate 351 and a plurality of cold conducting fins 353. The first cold conduction plate 351 is transversely arranged on the inner side of the inner container 113 of the second storage compartment 112, a plurality of cold conduction fins 353 extend downwards from the first cold conduction plate 351, and the lower end of the cold conduction piece 303 is thermally connected with the upper part of the first cold conduction plate 351. By arranging the first cold conducting plate 351 transversely arranged on the inner side of the liner 113 of the second storage compartment 112, the cold conducting member 303 and the heat exchanger 305 can be in large-area thermal connection, and meanwhile, the first cold conducting plate 351 transversely arranged can further shorten the cold transfer distance.

In some embodiments, the heat exchanger 305 further includes a second cold conducting plate 352 disposed rearward of the first cold conducting plate 351 and the plurality of cold conducting fins 353. A portion of the evaporation tube 205 of the vapor compression refrigeration system passes through the liner 113 of the second storage compartment 112 and is attached to the rear surface of the second cold conducting plate 352, so that the second storage compartment 112 receives the cold energy of the vapor compression refrigeration system. By introducing the evaporating pipe 205, the second storage compartment 112 has three refrigeration modes, namely refrigeration by only using a Stirling refrigeration system, refrigeration by only using a vapor compression refrigeration system, and refrigeration by both the Stirling refrigeration system and the vapor compression refrigeration system, and the two refrigeration systems can complement each other. Thus, the preservation temperature range of the second storage chamber 112 can be further widened, so that the preservation temperature of the second storage chamber 112 can be changed in a wide temperature range from 2 ℃ to-80 ℃, and the functions of refrigeration, freezing and ultralow temperature freezing can be realized. The utility model discloses in refrigerator 100 introduces second storing room 112 through the partly of evaporating pipe 205 with vapor compression refrigerating system for the temperature range of preserving of second storing room 112 is wider, can use stirling refrigerating system and vapor compression refrigerating system to provide cold volume to it simultaneously when needing second storing room 112 rapid cooling, improves refrigeration efficiency. Furthermore, the thermal connection between the evaporation tube 205 and the heat exchanger 305 can be enhanced by disposing the evaporation tube 205 to be attached to the rear surface of the second cold conducting plate 352, which is also advantageous for improving the cooling efficiency. As shown in fig. 2, a compressor compartment 104 is defined at the bottom of the rear side of the case 101, and a compressor 201 and a condenser 202 of the vapor compression refrigeration system are arranged in the compressor compartment 104 in the lateral direction in this order. A second heat radiation fan 203 is further provided between the compressor 201 and the condenser 202 to promote heat radiation of the compressor 201. For other storage compartments, the evaporation tubes 205 can be arranged on the rear wall of the inner container of the storage compartment to realize cold supply, and some storage compartments can be provided with the evaporation tubes 205 to transfer cold, and other storage compartments use the air supply duct to transfer cold. As shown in fig. 3, one end of the air duct 206 is connected to the inner container of the third storage compartment 116, and the other end is connected to the inner container 114 of the first storage compartment 111, so that the cold energy of the vapor compression refrigeration system is supplied to the third storage compartment 116 and the first storage compartment 111. In addition, an evaporation pan 207 is further arranged in the press bin 104, the bottom of each storage chamber is connected with a water receiving pipe, and the tail end of each water receiving pipe extends into the evaporation pan 207 and is used for introducing defrosting water into the evaporation pan 207.

In some embodiments, a double door 400 is disposed at the front side of the second storage compartment 112 to improve the heat preservation effect of the door body of the refrigerator 100 and reduce cold leakage. Fig. 5 is an exploded schematic view of the double door 400 and the door frame 430 of the refrigerator 100 shown in fig. 1. Fig. 6 is a partially enlarged schematic view of fig. 5. 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 second storage compartment 112, and is used for opening and closing the second storage compartment 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 second storage compartment 112 and the first storage compartment 111 share the same outer door 401. Set double-deck door 400 to including the outer door body 401 and the interior door body 402 of mutual independence, and the size of the outer door body 401 is greater than the size of the interior door body 402, and first storing compartment 111 is by the switching of the outer door body 401, and like this, when the user got article from first storing compartment 111, under the state that the outer door body 401 was opened, the interior door body 402 can keep the state of closing, and the second storing compartment 112 still is sealed promptly, can effectively reduce to leak coldly. The distance between the inner door body 402 and the outer door body 401 is not more than 5 mm. The distance is too large, and the frosting risk is large. The outer surface of the inner door 402 may be provided with a heating wire, and the heating wire may be intermittently opened or opened according to conditions. Meanwhile, in order to ensure that the outer side of the inner door body 402 does not frost, a vacuum heat insulation board can be further arranged inside the inner door body 402, so that the temperature of the outer surface of the inner door body 402 is higher than 0 ℃. In order to overcome the negative pressure problem of the second storage compartment 112, a pressure balance hole may be further formed on the door seal of the inner door 402 to ensure that the inner door 402 can be smoothly opened.

The embodiment of the utility model provides a refrigerator 100 still includes: a door frame 430 and a mechanical locking mechanism. The door frame 430 is disposed at the front of the cabinet 101 of the second storage 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. The inner door 402 can be embedded in the box 101 by providing the separate door frame 430 at the front of the box 101 of the second storage compartment 112. 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 weather strip may be provided between the lower portion of the inner door 402 and the first storage compartment 111. 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 °. The inner door 402 and the chest 101 are typically connected by two hinges 450.

Referring to fig. 6, a front end surface of the door frame 430 is provided with a catching 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 sealed and fixed by moving the clamping head 5121 into the clamping groove 431 and matching the clamping head 521 with the protrusion 521, the inner door body 402 and the door frame 430 are separated by moving the clamping head 5121 out of the clamping groove 431, and the door frame is ingenious in structure and convenient to operate and control.

With continued reference to fig. 6, the first structure 501 includes a front plate 511 and a side plate 512, and a through hole matching with the first rod (not shown) of the rotating rod 504 is formed on the side 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. 6, 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 addition, a recess 421 is formed on the front end surface of the inner door 402; 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.

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 first storage chamber and a second storage chamber are defined in the box body, and the second storage chamber is positioned below the first storage chamber;

the vapor compression refrigeration system is configured to provide cold energy for at least the first storage compartment; and

the Stirling refrigerating system comprises a Stirling refrigerating machine and a heat exchanger, wherein the Stirling refrigerating machine is arranged behind the first storage chamber, the heat exchanger is arranged in the second storage chamber, and the cold end of the Stirling refrigerating machine is thermally connected with the heat exchanger to provide cold for the second storage chamber.

2. The refrigerator according to claim 1,

the horizontal projection of the rear wall surface of the inner container of the first storage compartment is positioned in front of the horizontal projection of the rear wall surface of the inner container of the second storage compartment, so that a placement area is defined between the rear wall surface of the inner container of the first storage compartment and the top wall surface of the inner container of the second storage compartment; the Stirling cooler is disposed at the rest area.

3. The refrigerator of claim 2, further comprising:

a box body disposed at the resting area;

the rear wall surface of the box body is opened, an accommodating space is defined between the box body and the rear wall plate of the shell of the refrigerator, and the Stirling refrigerator is arranged in the accommodating space.

4. The refrigerator according to claim 3,

the Stirling refrigerator comprises a shell, a cylinder, a piston, a driving mechanism for driving the piston to move and a first heat dissipation fan; the casing comprises a main body part and a cylindrical part, the driving mechanism is arranged in the main body part, the piston is configured to reciprocate in the cylindrical part, so that the cold end is formed at the tail end of the cylindrical part, the main body part is provided with an opening, and the first cooling fan is arranged at the opening.

5. The refrigerator according to claim 4,

the first cooling fan is arranged on the rear wall surface of the main body part;

a first ventilation opening is formed in the position, corresponding to the first heat dissipation fan, of the rear wall plate of the shell;

and a second ventilation opening is formed in the rear wall plate of the shell corresponding to the joint of the main body part and the cylindrical part.

6. The refrigerator according to claim 1,

the stirling refrigeration system further comprising: and the upper end of the cold guide part is covered and buckled outside the cold end to be thermally connected with the cold end, and the lower end of the cold guide part penetrates through the inner container of the second storage compartment to be thermally connected with the heat exchanger.

7. The refrigerator according to claim 6,

the heat exchanger comprises a first cold conducting plate and a plurality of cold conducting fins; wherein

The first cold guide plate is transversely arranged on the inner side of the inner container of the second storage compartment, the cold guide fins extend downwards from the first cold guide plate to form, and the lower end of the cold guide piece is thermally connected with the upper portion of the first cold guide plate.

8. The refrigerator according to claim 7,

the heat exchanger also comprises a second cold conducting plate which is arranged at the rear part of the first cold conducting plate and the plurality of cold conducting fins;

and one part of the evaporation tube of the vapor compression refrigeration system penetrates through the inner container of the second storage chamber and is attached to the rear surface of the second cold conduction plate, so that the second storage chamber receives the cold energy of the vapor compression refrigeration system.

9. The refrigerator according to claim 1,

a press bin is defined at the bottom of the rear side of the box body;

the compressor and the condenser of the vapor compression refrigeration system are sequentially arranged in the compressor bin in the transverse direction; and a second heat radiation fan is also arranged between the compressor and the condenser.

10. The refrigerator according to claim 1, further comprising:

the air duct cover plate is arranged on the inner side of the inner container of the second storage compartment, a cavity is defined between the air duct cover plate and the inner container of the second storage compartment, the heat exchanger is positioned in the cavity, and an air supply opening is formed in the front side of the air duct cover plate; and

and the air supply fan is arranged corresponding to the air supply outlet and used for promoting the airflow to flow.

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