CN211977342U

CN211977342U - Low-temperature box

Info

Publication number: CN211977342U
Application number: CN202020028055.4U
Authority: CN
Inventors: 李怀庆; 朱瑞东; 展江华; 曲宏月
Original assignee: Qingdao Helide Low Temperature Technology Co ltd
Current assignee: Qingdao Helide Low Temperature Technology Co ltd
Priority date: 2020-01-08
Filing date: 2020-01-08
Publication date: 2020-11-20
Anticipated expiration: 2030-01-08

Abstract

The utility model relates to a low temperature box, which comprises an insulation can, an independent unit and a duct system, wherein the independent unit is arranged above the insulation can and comprises a compressor, a first condenser, an evaporator, an evaporation fan, an insulation cover covering the evaporator and the evaporation fan and an air inlet and an air outlet which are arranged on a unit bottom plate, and the unit bottom plate is provided with a water receiving tank, a water draining tank and a water storage tank with lower position; the air duct system comprises an air suction cover and an air guide cover which are respectively communicated with the air inlet and the air outlet, and an air duct baffle plate on which a plurality of air supply outlets are arranged. The utility model has simple, compact and beautiful structure, convenient installation and no occupation of the internal space of the box body; the defrosting water of the evaporator is discharged smoothly; the air cooled by the evaporator is uniformly discharged through the air supply outlet, so that the cold and heat exchange is realized, and the temperature inside the freezing chamber is reduced.

Description

Low-temperature box

The technical field is as follows:

the utility model relates to a refrigeration technology field, in particular to low temperature box.

Background art:

at present, a compressor and a condenser in a refrigerating unit of a refrigerator are usually arranged in a single space at the bottom of the refrigerator, an evaporator of the refrigerating unit is arranged in a refrigerating chamber and/or a freezing chamber of the refrigerator, and the evaporator arranged in the refrigerating chamber and/or the freezing chamber undoubtedly occupies a certain storage space, so that the storage space of the refrigerating chamber and/or the freezing chamber cannot be fully and effectively utilized.

The utility model has the following contents:

to overcome the above problems, it would be advantageous to provide a cryocooler having a refrigeration unit that is independent of the storage space.

In order to achieve the above object, the utility model provides a low temperature box, it includes:

the heat preservation box comprises a box body, a door body and a freezing chamber enclosed by the box body and the door body;

independent unit, its overhead in the top of insulation can to include:

the water receiving tank, the drainage tank, the water storage tank, the compressor fixing groove, the air inlet and the air outlet are arranged on the unit bottom plate;

a compressor installed on the compressor fixing groove;

the first condenser is arranged above the water storage tank;

the evaporator is fixed above the water receiving tank, and the water receiving tank is communicated with the water storage tank through the drainage tank;

the evaporation fan is fixed at the air inlet;

a first heater fixed to the evaporator;

the second heater is fixed on the water receiving tank;

a heating belt installed in the drainage groove;

the heat preservation cover is clamped with the unit bottom plate so as to form a closed cooling space between the heat preservation cover and the unit bottom plate, the evaporator and the evaporation fan are accommodated in the closed cooling space, and the air inlet and the air outlet are respectively positioned at two sides of the evaporator and are communicated with the closed cooling space;

an air duct system, comprising:

the air suction cover is arranged on the top plate of the inner container of the box body, is communicated with the air inlet and is provided with a plurality of air suction openings, so that air in the freezing chamber can enter the closed cooling space;

the air guide sleeve is arranged on the top plate of the liner of the box body, is positioned on the rear side of the air suction sleeve and is communicated with the air outlet;

the air duct baffle is arranged between the air duct baffle and the liner back plate of the box body at intervals, the upper portion of the air duct baffle is connected with the flow guide cover, so that an air supply channel is formed between the air duct baffle and the liner back plate, and a plurality of air supply ports which are respectively communicated with the air supply channel and the freezing chamber are arranged on the front side of the air duct baffle, so that air cooled in the closed cooling space can be sent into the freezing chamber.

In the utility model, the compressor, the first condenser, the evaporator and the evaporation fan are all installed on the unit bottom plate in a centralized way, and the evaporation fan and the evaporator are accommodated in the heat preservation shell, so that the structure is simple, compact and beautiful, the installation is convenient, and the internal space of the box body is not occupied; the defrosting water after defrosting of the evaporator is collected by the water receiving tank and flows into the water storage tank through the water drainage tank, and the defrosting water is prevented from being frozen again due to the arrangement of the two heaters and the heating belt; because the air suction cover is provided with a plurality of air suction openings, the air pressure balance of each layer can be ensured; a plurality of air supply outlets are designed on the air duct baffle plate to ensure even air outlet; through the rotation of the evaporation fan, air in the freezing chamber enters the heat preservation cover through the air suction cover by the air inlet, the air is cooled through the evaporator, and the air returns to the inside of the freezing chamber through the air guide cover and the air duct baffle by the air outlet, so that the cold and heat exchange is realized to cool the inside of the freezing chamber.

Furthermore, the heat preservation cover is arranged to be respectively in contact fit with the two ends and the top surface of the evaporator, so that air in the freezing chamber is sucked into the closed cooling space through the air inlet by the evaporation fan, then is cooled by the evaporator and finally is sent into the freezing chamber through the air outlet.

Because two end surfaces and the top surface of the evaporator are in contact fit with the foam heat-insulating cover, air entering through the air inlet can enter the air outlet only after completely passing through the evaporator, and the cooling efficiency is improved.

Still further, the heat preservation cover is a foam heat preservation cover.

Furthermore, the machine set box is arranged above the heat insulation box, the independent machine set is arranged in the machine set box, and the machine set box is provided with a detachable front shield and a detachable rear shield.

Through above-mentioned structural arrangement makes can conveniently maintain independent unit through dismantling preceding guard shield and/or back guard shield.

Still further, the upper ends of the air suction hood and the air guide hood are inserted into the unit bottom plate, the air suction hood is opposite to the air inlet, and the air guide hood is opposite to the air outlet.

Through the structure setting, make the utility model discloses an air inlet independently comes with the air-out, does not each other influence.

And the water receiving tank is arranged to be higher than the water storage tank, so that the defrosting water generated by the evaporator is collected by the water receiving tank and then enters the water storage tank through the water drainage tank.

Through the structure, the defrosting water generated by the evaporator can be conveyed to the water storage tank from the water receiving tank as soon as possible.

Still further, the independent unit also comprises a second condenser arranged at the bottom of the water storage tank, wherein one end of the second condenser is connected with the compressor, and the other end of the second condenser is connected with the first condenser.

Through the structure, the second condenser is directly connected with the compressor, so that the temperature of the second condenser is higher, water in the water storage tank can be heated, and evaporation of defrosting water can be accelerated.

These and other aspects of the invention will be apparent from and elucidated with reference to the embodiments described hereinafter.

Description of the drawings:

the structure of the invention, together with further objects and advantages thereof, will best be understood from the following description taken in conjunction with the accompanying drawings, in which like reference characters identify like elements:

fig. 1 is a schematic perspective view of a cryobox according to an embodiment of the present invention, partially exploded to facilitate the structure of the individual units;

FIG. 2 is a front view of the cryostat of FIG. 1, but with the door of the incubator removed to clearly show the structure of the ductwork;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a top plan view of the individual modules of the cryobox of FIG. 1;

fig. 5 is a side view of the individual unit shown in fig. 4.

The specific implementation mode is as follows:

the following description of the embodiments of the present invention will be made with reference to the accompanying drawings.

The term "defrosting water" refers to water formed after defrosting on an evaporator, because the surface temperature of the evaporator is low when a low-temperature box is in refrigeration operation, water in the air is condensed on the surface of the evaporator to form frost, and frost accumulated for a long time can affect the refrigeration effect, the evaporator needs to be heated by a heater to defrost, and the water formed after defrosting is called defrosting water.

As shown in fig. 1 to 3 and fig. 4 to 5, a low temperature cabinet according to an embodiment of the present invention includes an insulation box 1, an independent unit 3, and an air duct system 5, wherein the insulation box 1 includes a cabinet 10, a door 12, and a freezing chamber 14 enclosed by the cabinet 10 and the door 12; the independent unit 3 is placed above the heat-insulating box 1, and includes a unit bottom plate 30, a compressor 32, a first condenser 34, an evaporator 36, an evaporation fan 38, and a heat-insulating cover 39. The air duct system 5 includes an air suction hood 52, an air guide hood 54, and an air duct baffle 56. It should be noted that the independent unit further includes a condensing fan 340, which is used for dissipating heat of the first condenser 34.

As shown in fig. 4 and referring to fig. 1, the unit bottom plate 30 is provided with a water receiving tank 31, a water discharging tank 33, a water storage tank 35, a compressor fixing groove 37, an air inlet 302 and an air outlet 304. Wherein, the compressor 32 is installed on the compressor fixing groove 37; the first condenser 34 is installed above the water storage tank 35; the evaporator 36 is fixed above the water receiving tank 31, the water receiving tank 31 is communicated with the water storage tank 35 through the water drainage tank 33, and the water receiving tank 31 is arranged to be higher than the water storage tank 35, so that the defrosting water generated by the evaporator 36 is collected through the water receiving tank 31 and can flow into the water storage tank 35 through the water drainage tank 33; the evaporation fan 38 is fixed at the air inlet 302; a first heater 41 fixed to the evaporator 36; a second heater 42 fixed to the water receiving tank 31; a heating belt 43 installed in the drain tank 33; the heat-insulating cover 39 is a foam heat-insulating cover, and is clamped with the unit bottom plate 30, so as to form a closed cooling space (not shown) therebetween, wherein the evaporator 36 and the evaporation fan 38 are accommodated in the closed cooling space, the air inlet 302 and the air outlet 304 are respectively located at two sides of the evaporator 36, and the air inlet 302 and the air outlet 304 are both communicated with the closed cooling space.

In addition, in the present embodiment, the bottom of the reservoir 35 is provided with a second condenser (not shown) which is a component of the independent unit 3, and one end of the second condenser is connected to the compressor 32, and the other end of the second condenser is connected to the first condenser 34, specifically, the high-temperature and high-pressure gas discharged from the exhaust port (not shown) of the compressor 32 flows through the second condenser at the bottom of the reservoir 35 to be condensed, and then flows through the first condenser 34 above the reservoir 35 to be condensed again, so that the second condenser can evaporate the condensed water in the reservoir 35 due to its relatively high temperature. It should be understood that the second condenser may be formed in an S-shaped coil in order to increase the length or heating area.

It should be noted that, both the first heater 41 and the second heater 42 may be heating wires, and the first heater 41 fixed on the evaporator 36 only has a heating effect on the evaporator 36, and once the defrosted water drops into the water receiving tank 31, the defrosted water will freeze, so that a separate heater, i.e., the second heater 42, is arranged at the bottom of the water receiving tank 31. When the low temperature tank is defrosted, the evaporator 36, the water receiving tank 31, the drain tank 33 and the water inlet (not shown) of the water storage tank 35 need to have a thermal environment (for example, above 5 ℃), so that the defrosting water flows out by arranging a heating device.

As shown in fig. 2 and 3, the suction hood 52 is disposed on the top plate 11 of the inner container of the cabinet 10, is communicated with the air inlet 302, and has a plurality of suction openings 522 (see fig. 3), so that air in the freezing chamber 14 can enter the sealed cooling space; the air guide sleeve 54 is arranged on the liner top plate 11 of the box body 10, is positioned at the rear side of the air suction sleeve 52 and is communicated with the air outlet 304; the air duct baffle 56 is spaced apart from the inner liner back plate 13 of the cabinet 10 and connected to the guide cover 54 at an upper portion thereof, so that an air supply duct 563 (see fig. 3) is formed between the air duct baffle 56 and the inner liner back plate 13, and a plurality of air supply ports 560 (see fig. 2) respectively communicating with the air supply duct 563 and the freezing chamber 14 are provided at a front side of the air duct baffle 56, so that air cooled by the evaporator 36 in the closed cooling space can be supplied into the freezing chamber 14. As shown in fig. 3 and referring to fig. 5, the upper ends of the suction hood 52 and the air guide hood 54 are inserted into the unit bottom plate 30, the suction hood 52 faces the air inlet 302, and the air guide hood 54 faces the air outlet 304.

It should be noted that the heat-insulating cover 39 is disposed to contact and cooperate with the two ends 360 and the top surface 362 of the evaporator 36, respectively, so that the air in the freezing chamber 14 is sucked into the closed cooling space through the suction cover 52 and the air inlet 302 by the evaporation fan 38 in sequence, and is cooled by the evaporator 36 and then sent into the freezing chamber 14 through the air outlet 304, the air guide cover 54 and the air duct baffle 56.

As shown in fig. 1, in the present embodiment, the low temperature box further includes a unit box 2, the unit box 2 is located above the heat insulating box 1, the independent unit 3 is located in the unit box 2, and the unit box 2 is provided with a detachable front shield 21 and a detachable rear shield 23.

In the present embodiment, the overhead type refrigerator is further provided with casters 6 to facilitate movement, and the door 12 is provided with a hollow glass 120 to facilitate a user to view food stored in the refrigerating compartment 14.

While the invention has been described with reference to the above embodiments, it will be understood by those skilled in the art that various changes and modifications may be made to the above-described arrangements, including combinations of features disclosed herein either individually or in any combination as is evident from the below disclosure. These variants and/or combinations fall within the technical field of the present invention and are intended to be protected by the following claims.

Claims

1. A cryogenic tank, comprising:

independent unit, its overhead in the top of insulation can to include:

a compressor installed on the compressor fixing groove;

the first condenser is arranged above the water storage tank;

the evaporation fan is fixed at the air inlet;

a first heater fixed to the evaporator;

the second heater is fixed on the water receiving tank;

a heating belt installed in the drainage groove;

an air duct system, comprising:

2. The cryobox of claim 1, wherein the heat shields are configured to contact and engage two ends and a top surface of the evaporator, respectively, such that air in the freezer compartment is drawn into the enclosed cooling space through the air inlet by the evaporator fan, cooled by the evaporator, and finally delivered into the freezer compartment through the air outlet.

3. The cryostat according to claim 2, wherein the insulating cover is a foam insulating cover.

4. The cryogenic tank of claim 1 further comprising a unit box located above the insulation box, the stand-alone unit being located within the unit box and the unit box being provided with a removable front shield and a removable rear shield.

5. The cryogenic box of any one of claims 1 to 4, wherein the upper ends of the air suction hood and the air guide hood are inserted into the unit bottom plate, the air suction hood faces the air inlet, and the air guide hood faces the air outlet.

6. The cryogenic tank of claim 5 wherein the water catch basin is positioned higher than the water catch basin such that defrost water produced by the evaporator is collected by the water catch basin and then enters the water catch basin through the drain basin.

7. The cryogenic tank of claim 6 wherein the self-contained unit further comprises a second condenser mounted at the bottom of the sump, the second condenser being connected at one end to the compressor and at the other end to the first condenser.

8. The cryogenic tank of any one of claims 1 to 4, wherein the water receiving tank is disposed higher than the water storage tank, so that the defrosted water generated by the evaporator is collected by the water discharge tank into the water storage tank.

9. The cryogenic tank of claim 8 wherein the self-contained unit further comprises a second condenser mounted at the bottom of the sump, the second condenser being connected at one end to the compressor and at the other end to the first condenser.