CN110749144A

CN110749144A - Refrigeration device

Info

Publication number: CN110749144A
Application number: CN201810817742.1A
Authority: CN
Inventors: 沈凌峰; 纪建中; 杨章红; 米勒·亚历山大
Original assignee: BSH Electrical Appliances Jiangsu Co Ltd; BSH Home Appliances Co Ltd
Current assignee: BSH Electrical Appliances Jiangsu Co Ltd; BSH Home Appliances Co Ltd
Priority date: 2018-07-24
Filing date: 2018-07-24
Publication date: 2020-02-04
Anticipated expiration: 2038-07-24
Also published as: CN110749144B

Abstract

The invention provides a refrigeration appliance, comprising: a first storage chamber and a second storage chamber; a refrigerating system working for the first storage chamber, including devices such as a compressor, a condenser and an evaporator, and a refrigerant line connecting the devices in series with each other; the heat pipe loop which works for the second storage chamber and forms a closed loop comprises an evaporation section, a condensation section and a connecting pipeline for connecting the evaporation section and the condensation section; the evaporation section absorbs the heat of the second storage chamber to refrigerate the second storage chamber; the condenser section is coupled to the evaporator for releasing heat into the evaporator; wherein the condenser section at least partially penetrates and extends into the evaporator. The penetration and extension of the condensation section of the heat pipe loop into the evaporator can facilitate the direct contact of the condensation section and the evaporator and increase the heat exchange area, thereby better improving the heat exchange efficiency.

Description

Refrigeration device

Technical Field

The invention relates to the technical field of refrigeration, in particular to a refrigeration system of a household refrigeration appliance.

Background

At present, a refrigeration system of a household refrigerator mostly adopts a vapor compression refrigeration mode and mainly comprises a compressor, a condenser, a throttle valve, an evaporator, a pipeline and other parts. When the compressor is running, refrigerant saturated vapor is sucked into the compressor, and superheated refrigerant vapor is discharged out of the compressor. Many existing refrigerator products are equipped with two or more evaporators connected in series and in parallel to realize a multi-path refrigeration cycle. The more refrigeration cycles, the more complex the overall refrigeration system.

Disclosure of Invention

It is an object of the present invention to provide a simpler and easier to control refrigeration system to meet the refrigeration needs of multiple storage compartments.

To achieve the above object, a refrigerator includes: a first storage chamber and a second storage chamber; a refrigerating system working for the first storage chamber, including devices such as a compressor, a condenser and an evaporator, and a refrigerant line connecting the devices in series with each other; the heat pipe loop which works for the second storage chamber and forms a closed loop comprises an evaporation section, a condensation section and a connecting pipeline for connecting the evaporation section and the condensation section; the evaporation section absorbs the heat of the second storage chamber to refrigerate the second storage chamber; the condenser section is coupled to the evaporator for releasing heat into the evaporator; wherein the condenser section at least partially penetrates and extends into the evaporator.

The penetration and extension of the condensation section of the heat pipe loop into the evaporator can facilitate the direct contact of the condensation section and the evaporator and increase the heat exchange area, thereby better improving the heat exchange efficiency.

The refrigerating system working for the first storage chamber means that the refrigerating system works for meeting the refrigerating requirement of the first storage chamber.

The heat pipe loop forming a closed loop for working the second storage chamber means that the heat pipe loop works for meeting the refrigeration requirement of the second storage chamber.

Preferably, the condenser section penetrates and extends into the evaporator tubes in the evaporator.

So the condensing segment can be in direct contact with the refrigerant in the evaporating pipe after penetrating into the evaporating pipe, thereby carrying out heat exchange rapidly and greatly improving the heat exchange efficiency.

Preferably, the evaporator tube of the evaporator comprises an air inlet pipe and an air return pipe, and the condensation section at least partially penetrates into and extends into the air return pipe.

Preferably, the refrigeration system further comprises an accumulator connected to the return gas line, the condenser section extending through the accumulator into the return gas line.

The liquid refrigerant which does not absorb heat and evaporate is generally stored in the liquid storage device, and the condensing section penetrates into the liquid storage device and can be directly contacted with the liquid refrigerant in the liquid storage device for heat exchange, so that the heat exchange efficiency of the condensing section is further improved.

Preferably, the first storage chamber is provided as a storage chamber of a freezing temperature zone; the second storage compartment is configured as a refrigerated temperature zone storage compartment.

The freezing temperature zone is a refrigerating temperature of zero or less. The refrigerating temperature zone is a refrigerating temperature of zero degrees or more, and may include zero degrees.

Preferably, a control valve is arranged between the condensation section and the evaporation section to open or close the circulation of the refrigerant in the heat pipe loop.

Preferably, the control valve is provided in a descent pipe of the heat pipe loop.

The control valve can better control whether the heat pipe loop works or not, thereby realizing the refrigeration control of the second storage chamber.

Preferably, the refrigerator appliance further comprises a temperature sensor for detecting the temperature in the second storage compartment.

Preferably, the control valve is opened to allow the circulation flow of the refrigerant in the heat pipe circuit when the temperature detected by the temperature sensor is higher than a predetermined reference temperature.

Preferably, when defrosting of the evaporator is started, the control valve is closed to stop circulation of the refrigerant in the heat pipe circuit.

When the evaporator defrosts, the control valve is closed, so that heat is prevented from being transferred to the evaporation section of the heat pipe loop, and unnecessary increase of the temperature of the second storage chamber is avoided.

Drawings

FIG. 1 is a system diagram of a refrigeration system and heat pipe loop in accordance with an embodiment of the present invention;

FIG. 2 is a schematic diagram of a refrigeration system and heat pipe loop in accordance with another embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The refrigeration appliance of the present invention may be embodied as a domestic refrigerator, freezer or wine chest or the like. The present invention will be specifically described below by taking an example in which a refrigeration appliance is implemented as a refrigerator.

A home refrigerator in one embodiment of the present invention has a cabinet having a first storage chamber and a second storage chamber, a refrigeration system, a heat pipe circuit forming a closed loop, and a control unit controlling the refrigeration system and the heat pipe circuit. FIG. 1 is a system schematic for a refrigeration system and a heat pipe loop. As shown in fig. 1, the refrigeration system includes a compressor 1, a condenser 2, an evaporator 3, and the like, and a refrigerant line 4 connecting the above components. The control device includes an evaporator temperature sensor for detecting an evaporator temperature and a storage compartment temperature sensor for detecting a storage compartment temperature.

The refrigeration system has a refrigeration cycle that operates to meet the refrigeration demand of the first storage compartment. The refrigeration cycle mainly refers to the circulation flow of the refrigerant in each component of the refrigeration system, for example, starting from the compressor 1, the refrigerant that releases cold energy and absorbs heat from the first storage chamber is sucked in a gaseous state from the inlet line 11 of the compressor 1, and the vapor compressed to high temperature and high pressure is discharged through the outlet line 12 to enter the condenser 2. The refrigerant radiates heat into the outside air in the condenser 2, and is condensed into a high-pressure liquid refrigerant. The liquid refrigerant then flows into the dry filter 5 again to remove moisture or dirt, etc. from the refrigerant. The liquid refrigerant is then reduced in pressure through capillary tube 6 and controllably flowed into evaporator 3. The evaporator tube 30 of the evaporator 3 comprises an air inlet line 31 and an air return line 32. The liquid refrigerant enters the gas inlet line 31, flows through the entire evaporating tube 30, absorbs heat, evaporates into gaseous refrigerant, and flows out of the gas return line 32. The refrigerant flowing from the return line 32 re-enters the accumulator 7 so that part of the liquid refrigerant is stored in the accumulator 7 and does not return to the compressor 1. The liquid refrigerant absorbs the heat of the first storage chamber, is vaporized into vapor refrigerant and is sucked by the compressor 4 again, and the refrigerant enters the next cycle in the reciprocating mode.

The heat pipe circuit has a refrigeration circuit operating to meet a refrigeration demand of the second storage chamber for circulating a refrigerant therein. The heat pipe loop forms a closed loop and comprises an evaporation section 81, a condensation section 82 and a connecting pipeline for connecting the evaporation section 81 and the condensation section 82. The connecting line includes a rising line 91 and a falling line 92. The evaporation section 81 absorbs heat of the second storage chamber to refrigerate it. The condenser section 82 is coupled to the evaporator 3 and passes through the evaporator 3 for releasing heat into the evaporator 3.

The liquid refrigerant absorbs heat in the evaporation section 81 and is vaporized into a gaseous refrigerant, and then enters the condensation section 82 through the rising line 91. The gaseous refrigerant is released in the condensing section 82 and liquefied again into a liquid refrigerant, and then returns to the evaporating section 81 through the descending line 92 to absorb heat and be gasified, thereby entering the next refrigeration cycle.

In order to further increase the heat exchange efficiency of the condensation section 82, the condensation section 82 penetrates and extends into the evaporation tubes 30 of the evaporator 3, and in particular, the condensation section 82 penetrates and extends at least partially into the return lines 32 of the evaporation tubes 30. The condensing section 82 can directly contact with the refrigerant in the evaporating pipe 30, thereby rapidly performing heat exchange, and greatly improving heat exchange efficiency.

In order to better control the temperature of the second storage chamber, a control valve 93 may be provided between the condensation section 82 and the evaporation section 81 to open or close the circulation of the refrigerant in the heat pipe loop, so that the amount of cold transferred to the second storage chamber can be controlled to prevent the temperature of the second storage chamber from being too low. In particular, a control valve 93 is provided in the down pipe 92 of the heat pipe circuit.

A temperature sensor is provided in the second storage chamber to detect a storage temperature therein. When the temperature detected by the temperature sensor is higher than a predetermined reference temperature of the second storage chamber, the control valve 93 is opened to allow the circulation of the refrigerant in the heat pipe circuit to cool the second storage chamber.

When the entire refrigerator starts defrosting the evaporator 3, the control valve 93 is closed to stop the circulation of the refrigerant in the heat pipe circuit. Thereby preventing heat from being transferred to the evaporation section 81 of the heat pipe loop and thus preventing the temperature of the second storage chamber from being unnecessarily increased.

In another embodiment, as shown in fig. 2, similar to the system shown in fig. 1, the difference is that: the condenser section 82 extends through the reservoir 7 into the return air line 32. The liquid refrigerant that does not absorb heat and evaporate is generally stored in the accumulator 7, and the condensing section 82 penetrates into the accumulator 7 and can directly contact with the liquid refrigerant in the accumulator 7 to perform heat exchange, so that the heat exchange efficiency of the condensing section 82 is further improved.

In the above embodiments, the first storage compartment is provided as a storage compartment of a freezing temperature zone; the second storage compartment is configured as a refrigerated temperature zone storage compartment. The freezing temperature zone is a refrigerating temperature of zero or less. The refrigerating temperature zone is a refrigerating temperature of zero degrees or more, and may include zero degrees. As such, the heat pipe loop has been able to meet the cooling needs of the second storage compartment in accordance with the heat pipe principles.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A refrigeration appliance comprising:

a first storage chamber and a second storage chamber;

a refrigeration system for operating the first storage chamber, comprising a compressor (1), a condenser (2), an evaporator (3) and the like, and a refrigerant line (4) connecting the above devices in series with each other;

the heat pipe loop which works for the second storage chamber and forms a closed loop comprises an evaporation section (81), a condensation section (82) and a connecting pipeline for connecting the evaporation section (81) and the condensation section (82);

the evaporation section (81) absorbs the heat of the second storage chamber to refrigerate the second storage chamber; the condenser section (82) is coupled to the evaporator (3) for releasing heat into the evaporator (3);

characterized in that the condensation section (82) penetrates at least partially into and extends into the evaporator (3).

2. The refrigeration appliance according to claim 1, wherein said condensation section (82) penetrates and extends in an evaporation tube (30) in said evaporator (3).

3. A refrigerator as claimed in claim 1, characterized in that the evaporator tube (30) of the evaporator (3) comprises a feed line (31) and a return line (32), the condenser section (82) penetrating at least partially into and extending in the return line (32).

4. A refrigerator as claimed in claim 3, characterized in that the refrigeration system further comprises an accumulator (7) connected to the return air line (32), the condenser section (82) extending through the accumulator (7) into the return air line (32).

5. The refrigeration appliance according to claim 1, wherein the first storage compartment is provided as a storage compartment of a refrigerated temperature zone; the second storage compartment is configured as a refrigerated temperature zone storage compartment.

6. The refrigeration appliance according to claim 1, wherein a control valve (93) is provided between the condensation section (82) and the evaporation section (81) to open or close the circulation of the refrigerant in the heat pipe circuit.

7. The refrigeration appliance according to claim 6, wherein the control valve (93) is arranged in the down pipe (92) of the heat pipe circuit.

8. The refrigeration appliance according to claim 6 further comprising a temperature sensor for sensing the temperature within the second storage compartment.

9. The refrigeration appliance according to claim 8, wherein the control valve (93) is opened to circulate the refrigerant in said heat pipe circuit when the temperature detected by the temperature sensor is higher than a predetermined reference temperature.

10. The refrigeration appliance according to claim 6, wherein when defrosting of the evaporator (3) is initiated, the control valve is closed (93) to stop circulation of refrigerant in the heat pipe circuit.