CN115727615A - Refrigeration device - Google Patents
Refrigeration device Download PDFInfo
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- CN115727615A CN115727615A CN202111012184.XA CN202111012184A CN115727615A CN 115727615 A CN115727615 A CN 115727615A CN 202111012184 A CN202111012184 A CN 202111012184A CN 115727615 A CN115727615 A CN 115727615A
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- temperature
- refrigeration
- evaporator
- liquid storage
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- 238000005057 refrigeration Methods 0.000 title claims abstract description 113
- 239000007788 liquid Substances 0.000 claims abstract description 41
- 239000003507 refrigerant Substances 0.000 claims abstract description 31
- 230000000694 effects Effects 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 7
- 230000008014 freezing Effects 0.000 description 7
- 238000007710 freezing Methods 0.000 description 7
- 239000000243 solution Substances 0.000 description 5
- 239000006200 vaporizer Substances 0.000 description 4
- 239000011550 stock solution Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 239000002826 coolant Substances 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The invention belongs to the technical field of refrigeration equipment, and particularly provides refrigeration equipment. The invention aims to solve the problem that the refrigeration effect of a high-temperature refrigeration system of the existing refrigeration equipment is influenced due to the shortage of refrigerant. To this end, the refrigerating apparatus of the present invention includes an apparatus body, a low temperature refrigerating system, and a high temperature refrigerating system. The equipment body is limited with a low-temperature refrigeration chamber and a high-temperature refrigeration chamber; the low-temperature refrigeration system comprises a low-temperature evaporator arranged in a low-temperature refrigeration chamber; the high-temperature refrigerating system comprises a high-temperature liquid storage device, a high-temperature evaporator arranged in the high-temperature refrigerating chamber and an auxiliary evaporator arranged in the low-temperature refrigerating chamber. The liquid storage cavity of the high-temperature liquid storage device comprises a first liquid storage part and a second liquid storage part, the volume of the first liquid storage part is not smaller than that of the auxiliary evaporator, and the refrigerant in the second liquid storage part is used for enabling the high-temperature evaporator to normally refrigerate. The high-temperature refrigerating system of the refrigerating equipment can perform normal refrigeration.
Description
Technical Field
The invention belongs to the technical field of refrigeration equipment, and particularly provides refrigeration equipment.
Background
The refrigeration equipment comprises a refrigerator and an ice chest, the minimum refrigeration temperature of the refrigeration equipment is usually about-18 ℃, and in order to meet the refrigeration and freezing requirements of users at lower temperature, the existing refrigeration equipment usually adopts a double refrigeration system for refrigeration. That is, one of the dual refrigerating systems is used to refrigerate the other system, and the other system can provide a refrigerating effect of a lower temperature to the refrigerator after the refrigerant thereof is cooled. The lowest refrigeration temperature of the existing refrigerator adopting double refrigeration systems can reach below-50 ℃.
In a known solution, a refrigeration apparatus comprises an apparatus body, a low-temperature refrigeration system and a high-temperature refrigeration system. Wherein, the equipment body is limited with low temperature refrigeration room and high temperature refrigeration room, and low temperature refrigerating system's low temperature evaporator is placed in low temperature refrigeration room, and high temperature refrigerating system's high temperature evaporator is placed in high temperature refrigeration room. Further, the high temperature refrigeration system is also provided with an auxiliary evaporator, which is placed in the low temperature refrigeration compartment. When the temperature in the low-temperature refrigerating chamber is higher, the high-temperature refrigerating system refrigerates the low-temperature refrigerating chamber through the auxiliary evaporator.
The refrigerants used in the two refrigeration systems are typically different in order to accommodate the respective temperatures. After the temperature in the low-temperature refrigerating chamber is reduced to below 50 ℃, the refrigerant in the auxiliary evaporator is usually liquefied, so that the auxiliary evaporator separates the refrigerant in the high-temperature refrigerating system, the refrigerant in the high-temperature refrigerating system is easy to be in shortage, and the refrigerating effect of the high-temperature refrigerating system is influenced.
Disclosure of Invention
The invention aims to solve the problem that the refrigeration effect of a high-temperature refrigeration system of the existing refrigeration equipment is influenced due to the shortage of refrigerant in the high-temperature refrigeration system caused by the fact that an auxiliary evaporator of the high-temperature refrigeration system divides away excessive refrigerant.
To achieve the above object, the present invention provides a refrigerating apparatus comprising:
an apparatus body defining a low-temperature refrigerating chamber and a high-temperature refrigerating chamber;
a cryogenic refrigeration system comprising a cryogenic evaporator disposed within the cryogenic refrigeration chamber;
the high-temperature refrigeration system comprises a high-temperature liquid storage device, a high-temperature evaporator arranged in the high-temperature refrigeration chamber and an auxiliary evaporator arranged in the low-temperature refrigeration chamber;
the liquid storage cavity of the high-temperature liquid storage device comprises a first liquid storage part and a second liquid storage part, the volume of the first liquid storage part is not smaller than that of the auxiliary evaporator, and refrigerant in the second liquid storage part is used for enabling the high-temperature evaporator to normally refrigerate.
Optionally, the auxiliary vaporizer has a volume of no more than 100ml.
Optionally, the auxiliary vaporizer has a volume of no more than 50ml.
Optionally, the auxiliary evaporator is of a tubular structure, and the inner diameter of a pipeline of the auxiliary evaporator is not more than 5mm.
Optionally, the auxiliary evaporator has a pipe with an inner diameter of no more than 4mm.
Optionally, the low-temperature evaporator is of a tubular structure, and a cross-sectional size of a pipeline of the low-temperature evaporator is larger than a cross-sectional size of a pipeline of the auxiliary evaporator.
Optionally, the auxiliary evaporator and the cryogenic evaporator are fixed to the same set of fins.
Optionally, the volume of the first reservoir is equal to the volume of the auxiliary evaporator.
Optionally, the high temperature refrigeration system further comprises a check valve connected in series between the high temperature accumulator and the auxiliary evaporator.
Optionally, the refrigeration appliance is an air-cooled refrigeration appliance.
Based on the foregoing description, it can be understood by those skilled in the art that, in the foregoing technical solution of the present invention, by providing the first reservoir portion in the high-temperature accumulator, and making the volume of the first reservoir portion not less than the volume of the auxiliary evaporator, and making the refrigerant in the second reservoir portion used for normal refrigeration of the high-temperature evaporator, the high-temperature refrigeration system can perform normal refrigeration at least by the refrigerant in the second reservoir portion even if the auxiliary evaporator is filled with the liquid coolant.
Further, the volume through making supplementary evaporimeter is not more than 100ml, is not more than 50ml even for the volume of first stock solution portion can be as little as possible, and then makes the volume of high temperature reservoir as little as possible, thereby guaranteeing that supplementary evaporimeter can carry out refrigerated prerequisite to the low temperature refrigeration room under, can reduce the installation space of high temperature reservoir as far as possible, thereby avoided carrying out the situation of great transformation to current refrigeration plant.
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
In order to more clearly explain the technical solution of the present invention, some embodiments of the present invention will be described hereinafter with reference to the accompanying drawings. Those skilled in the art will appreciate that elements or portions of the same reference number are the same or similar in different figures; the drawings of the invention are not necessarily to scale relative to each other.
In the drawings:
FIG. 1 is a schematic diagram of the distribution of refrigeration compartments of a refrigeration appliance in accordance with some embodiments of the present invention;
FIG. 2 is a schematic diagram of a refrigeration system of a refrigeration appliance in accordance with certain embodiments of the present invention;
FIG. 3 is a schematic illustration of the effect of a high temperature reservoir in some embodiments of the invention;
FIG. 4 is a schematic illustration of the cooperation between a cryogenic evaporator and an auxiliary evaporator in some embodiments of the present invention;
fig. 5 is a schematic diagram of a refrigeration system of a refrigeration appliance in accordance with further embodiments of the invention.
Detailed Description
It should be understood by those skilled in the art that the embodiments described below are only a part of the embodiments of the present invention, not all of the embodiments of the present invention, and the part of the embodiments are intended to explain the technical principles of the present invention and not to limit the scope of the present invention. All other embodiments, which can be obtained by a person skilled in the art based on the embodiments provided by the present invention without inventive effort, shall still fall within the scope of protection of the present invention.
It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "top", "bottom", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Further, it should be noted that, in the description of the present invention, the terms "high temperature" and "low temperature" are not absolute "high temperature" and "low temperature", but are defined for distinguishing the features in the high temperature refrigeration system and the low temperature refrigeration system. Such as "high temperature refrigeration system" and "low temperature refrigeration system", "high temperature evaporator" and "low temperature evaporator", "high temperature reservoir" and "low temperature reservoir", "high temperature fan" and "low temperature fan", etc.
Fig. 1 is a schematic diagram of the distribution of refrigeration compartments of a refrigeration apparatus in some embodiments of the invention, fig. 2 is a schematic diagram of the principle of a refrigeration system of a refrigeration apparatus in some embodiments of the invention, fig. 3 is a schematic diagram of the effect of a high temperature accumulator in some embodiments of the invention, and fig. 4 is a schematic diagram of the cooperation between a low temperature evaporator and an auxiliary evaporator in some embodiments of the invention.
As shown in fig. 1 and 2, in some embodiments of the present invention, a refrigerating apparatus includes an apparatus body 100, a low temperature refrigerating compartment 200, and a high temperature refrigerating compartment 300.
As shown in fig. 1, the apparatus body 100 includes a low temperature refrigerating compartment 110, a high temperature refrigerating compartment 120, and a plurality of storage compartments. Optionally, the high temperature refrigerating compartment 120 includes a refrigerating compartment 121 and a freezing compartment 122.
The number of the storage chambers may be any number. For example, at least one storage compartment is provided for each refrigeration compartment.
As shown in fig. 2, the cryogenic refrigeration system 200 includes a cryogenic compressor 201, a cryogenic condenser 202, a cryogenic heat exchanger 203, a cryogenic filter drier 204, a cryogenic pressure reducing member 205, a cryogenic evaporator 206 and a cryogenic liquid reservoir 207, which are connected in sequence. Wherein the low temperature evaporator 206 is placed inside the low temperature refrigerating compartment 110. Further, the low temperature refrigerating system 200 further includes a low temperature fan 208, and the low temperature fan 208 is used for conveying the cold air in the low temperature refrigerating chamber 110 to the storage chamber corresponding to the low temperature refrigerating chamber 110.
The low-temperature pressure reducing member 205 may be a member having a throttling function and/or a pressure reducing function, in addition to the capillary tube.
With continued reference to fig. 2, the high temperature refrigeration system 300 includes a high temperature compressor 301, a high temperature condenser 302, a high temperature filter drier 303, a control valve 304, a first high temperature pressure reducing means 305, a second high temperature pressure reducing means 306, a third high temperature pressure reducing means 307, a refrigerated evaporator 308, a refrigerated evaporator 309, an auxiliary evaporator 310, a check valve 311, a high temperature heat exchanger 312, a high temperature reservoir 313 and a high temperature fan 314. The high-temperature condenser 302, the refrigerating evaporator 308, the freezing evaporator 309, and the auxiliary evaporator 310 are each provided with a high-temperature fan 314.
With continued reference to fig. 2, the high temperature compressor 301, the high temperature condenser 302, the high temperature filter drier 303, the control valve 304, the first high temperature pressure reducing means 305, the refrigeration evaporator 308, the freezing evaporator 309, and the high temperature liquid reservoir 313 are connected end to end in sequence.
With continued reference to fig. 2, the second high temperature pressure reducing means 306 is connected at one end to the control valve 304 and at the other end to the high temperature heat exchanger 312 such that the second high temperature pressure reducing means 306 is connected in parallel with the first high temperature pressure reducing means 305 and the refrigeration evaporator 308.
With continued reference to fig. 2, the third high temperature pressure reducing member 307 has one end connected to the control valve 304 and the other end connected to the auxiliary evaporator 310, and the auxiliary evaporator 310 is further connected to the high temperature heat exchanger 312 through the check valve 311, so that the third high temperature pressure reducing member 307, the auxiliary evaporator 310 and the check valve 311 are connected in parallel to the first high temperature pressure reducing member 305 and the refrigerating evaporator 308.
Wherein the control valve 304 is used to control the flow of the refrigerant flowing out of the high temperature filter drier 303 to at least one of the first, second and third high temperature pressure reducing means 305, 306 and 307. The check valve 311 serves to allow the refrigerant to flow from the auxiliary evaporator 310 to the high temperature heat exchanger 312 in the direction of the arrow shown in fig. 2.
In some embodiments of the present invention, the first, second, and third high temperature pressure reducing members 305, 306, and 307 may be members having a throttling function and/or a pressure reducing function, in addition to being capillary tubes.
With continued reference to fig. 2, the refrigerated evaporator 308 is placed within the refrigerated refrigeration compartment 121 and the freezer evaporator 309 is placed within the freezer refrigeration compartment 122.
With continued reference to fig. 2, the high temperature heat exchanger 312 corresponds to the low temperature heat exchanger 203, and the high temperature heat exchanger 312 is used for absorbing heat of the low temperature heat exchanger 203 to lower the temperature of the whole low temperature refrigeration system 200. Structurally, the high temperature heat exchanger 312 and the low temperature heat exchanger 203 may be close to and abutted against each other, or may share a set of fins so that heat exchange is performed by the set of fins.
Since the refrigerant in the high temperature refrigeration system 300 is to satisfy the refrigeration requirement of the high temperature refrigeration system 300, and the refrigerant in the low temperature refrigeration system 200 is to satisfy the refrigeration requirement of the low temperature refrigeration system 200, the refrigerants in the high temperature refrigeration system 300 and the low temperature refrigeration system 200 are usually different. Alternatively, the refrigerant in the high temperature refrigeration system 300 is R600a, which becomes liquid at lower temperatures.
In the present invention, when the low-temperature refrigeration system 200 performs normal refrigeration, the temperature inside the low-temperature refrigeration chamber 110 is low, and can reach below-50 ℃, so that the refrigerant inside the auxiliary evaporator 310 becomes liquid and the pressure is reduced. The refrigerant in the high temperature refrigeration system 300 flows to the low pressure auxiliary evaporator 310 and becomes liquid, so that the refrigerant in the high temperature refrigeration system 300 is easily in shortage, thereby affecting the refrigeration effect of the high temperature refrigeration system 300.
Although the control valve 304 and the check valve 311 are disposed to block the flow of the refrigerant to the auxiliary evaporator 310 to some extent, since the control valve 304 and the check valve 311 are difficult to completely shut off, there is a leakage, so that when the auxiliary evaporator 310 is in a low-temperature environment for a long time, a large amount of liquid refrigerant still accumulates, and the refrigerant in the high-temperature refrigeration system 300 is in short supply.
To this end, in some embodiments of the present invention, the volume of the reservoir cavity of the high temperature accumulator 313 is increased relative to existing refrigeration equipment. For convenience of description, an increased volume in the high-temperature liquid reservoir 313 is referred to as a first liquid reservoir 3131, and an original volume in the high-temperature liquid reservoir 313 is referred to as a second liquid reservoir 3132. That is, the reservoir cavity of the high-temperature reservoir 313 includes a first reservoir 3131 and a second reservoir 3132. Wherein the first stock solution portion 3131 has a volume not less than that of the auxiliary evaporator 310, and the refrigerant in the second stock solution portion 3132 is used to normally cool the high temperature evaporator (including the refrigerating evaporator 308 and the freezing evaporator 309). So that the auxiliary evaporator 310 can accommodate only the liquid refrigerant of the volume corresponding to the first sump 3131 without causing a shortage of the refrigerant in the high temperature refrigeration system 300.
Preferably, the first liquid storage portion 3131 is equal to the volume of the auxiliary evaporator 310.
Wherein the first and second sump portions 3131 and 3132 are in communication with each other and together constitute a sump cavity of the high temperature liquid reservoir 313, and the first sump portion 3131 may be spatially located outside or inside the second sump portion 3132.
Further, the auxiliary vaporizer 310 has a volume of not more than 100ml, for example, 100ml, 90ml, 70ml, 65ml, 50ml, 43ml, 35ml, etc. Preferably, the auxiliary vaporizer 310 has a volume of no more than 50ml, e.g., 50ml, 45ml, 41ml, 39ml, 37ml, etc.
As shown in fig. 4, the auxiliary evaporator 310 and the low temperature evaporator 206 are both of a tube structure, and the auxiliary evaporator 310 and the low temperature evaporator 206 are fixed to the same set of fins 400. Alternatively, the auxiliary evaporator 310 and the cryogenic evaporator 206 may be separately fixed to the cryogenic refrigeration chamber 110 as needed by those skilled in the art.
As can be seen from fig. 4, the sectional size of the piping of the low temperature evaporator 206 is larger than that of the auxiliary evaporator 310. Wherein, the inner diameter of the pipeline of the auxiliary evaporator 310 is not more than 5mm, such as 5mm, 4.8mm, 4.5mm, 4mm, etc. Preferably, the inner diameter of the piping of the auxiliary evaporator 310 is not more than 4mm, such as 4mm, 3.5mm, 3mm, 2.8mm, etc.
In addition, in other embodiments of the present invention, the auxiliary evaporator 310 and the low temperature evaporator 206 can be provided as any other heat exchanger, such as a micro-channel heat exchanger, as required by those skilled in the art.
It will be understood by those skilled in the art that the low temperature refrigeration system 200 and the high temperature refrigeration system 300 of the present invention are not limited to the one configuration shown in fig. 2, but may be any other possible system configuration. As in the other embodiments shown in fig. 5, the high temperature refrigeration system 300 has only one high temperature condenser.
Based on the foregoing description, it can be understood by those skilled in the art that the present invention enables the high temperature refrigeration system 300 to perform normal refrigeration by the refrigerant in the second sump 3132 even though the auxiliary evaporator 310 is filled with the liquid refrigerant, by providing the first sump 3131 in the high temperature accumulator 313, and making the volume of the first sump 3131 not less than the volume of the auxiliary evaporator 310, and making the refrigerant in the second sump 3132 used for the normal refrigeration of the high temperature evaporator (including the refrigerating evaporator 308 and the freezing evaporator 309).
Further, by making the volume of the auxiliary evaporator 310 not greater than 100ml, even not greater than 50ml, the volume of the first liquid storage portion 3131 can be as small as possible, and then the volume of the high-temperature liquid storage device (including the refrigeration evaporator 308 and the freezing evaporator 309) can be as small as possible, so that on the premise that the auxiliary evaporator 310 can refrigerate the low-temperature refrigeration chamber 110, the installation space of the high-temperature liquid storage device 313 can be reduced as much as possible, and the situation that the existing refrigeration equipment is greatly modified is avoided.
So far, the technical solution of the present invention has been described in connection with the foregoing embodiments, but it is easily understood by those skilled in the art that the scope of the present invention is not limited to these specific embodiments. Without departing from the technical principle of the present invention, a person skilled in the art may split and combine the technical solutions in the above embodiments, and may make equivalent changes or substitutions for related technical features, and any changes, equivalents, improvements, etc. made within the technical concept and/or technical principle of the present invention will fall within the protection scope of the present invention.
Claims (10)
1. A refrigeration apparatus, comprising:
an apparatus body defining a low-temperature refrigerating chamber and a high-temperature refrigerating chamber;
a cryogenic refrigeration system comprising a cryogenic evaporator disposed within the cryogenic refrigeration chamber;
the high-temperature refrigerating system comprises a high-temperature liquid storage device, a high-temperature evaporator arranged in the high-temperature refrigerating chamber and an auxiliary evaporator arranged in the low-temperature refrigerating chamber;
the liquid storage cavity of the high-temperature liquid storage device comprises a first liquid storage part and a second liquid storage part, the volume of the first liquid storage part is not smaller than that of the auxiliary evaporator, and refrigerant in the second liquid storage part is used for enabling the high-temperature evaporator to normally refrigerate.
2. The refrigeration appliance of claim 1,
the volume of the auxiliary evaporator is not more than 100ml.
3. The refrigeration appliance according to claim 2,
the volume of the auxiliary evaporator is not more than 50ml.
4. The refrigeration appliance according to claim 1,
the auxiliary evaporator is of a tubular structure,
the inner diameter of the pipeline of the auxiliary evaporator is not more than 5mm.
5. The refrigeration appliance of claim 4,
the inner diameter of the pipeline of the auxiliary evaporator is not more than 4mm.
6. A cold appliance according to claim 4 or 5,
the low-temperature evaporator is of a tubular structure,
the sectional size of the pipeline of the low-temperature evaporator is larger than that of the pipeline of the auxiliary evaporator.
7. The refrigeration appliance of claim 6,
the auxiliary evaporator and the cryogenic evaporator are secured to the same set of fins.
8. The refrigeration appliance according to any one of claims 1 to 5,
the volume of the first liquid storage part is equal to that of the auxiliary evaporator.
9. The refrigeration appliance according to any one of claims 1 to 5,
the high-temperature refrigeration system further comprises a one-way valve connected in series between the high-temperature liquid storage device and the auxiliary evaporator.
10. A cold appliance according to any of claims 1-5, wherein the cold appliance is an air-cooled cold appliance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111012184.XA CN115727615A (en) | 2021-08-31 | 2021-08-31 | Refrigeration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111012184.XA CN115727615A (en) | 2021-08-31 | 2021-08-31 | Refrigeration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115727615A true CN115727615A (en) | 2023-03-03 |
Family
ID=85291422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111012184.XA Pending CN115727615A (en) | 2021-08-31 | 2021-08-31 | Refrigeration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115727615A (en) |
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2021
- 2021-08-31 CN CN202111012184.XA patent/CN115727615A/en active Pending
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