CN113091341A - Double-temperature refrigerating system and refrigerating device - Google Patents
Double-temperature refrigerating system and refrigerating device Download PDFInfo
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- CN113091341A CN113091341A CN202110336416.0A CN202110336416A CN113091341A CN 113091341 A CN113091341 A CN 113091341A CN 202110336416 A CN202110336416 A CN 202110336416A CN 113091341 A CN113091341 A CN 113091341A
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- evaporator
- valve
- refrigeration system
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
- F25B5/04—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in series
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/003—Filters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D19/00—Arrangement or mounting of refrigeration units with respect to devices or objects to be refrigerated, e.g. infrared detectors
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
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- Power Engineering (AREA)
- Combustion & Propulsion (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention provides a dual-temperature refrigeration system and a refrigeration device using the same. According to the dual-temperature refrigeration system provided by the embodiment of the invention, the on-off valves which are connected in parallel are arranged on the two evaporators, so that the independent control of the dual-evaporation temperature is realized, the temperature control is accurate, the fluctuation is small, the start and stop of respective refrigeration cycle can be controlled at any time according to the evaporation temperatures of the two evaporators, and the food fresh-keeping is facilitated.
Description
Technical Field
The invention relates to the technical field of refrigeration equipment, in particular to a dual-temperature refrigeration system and a refrigeration device.
Background
In the refrigerating system of the freezing and refrigerating cabinet in the related technology, the compressor is usually a single-cylinder compressor, two evaporators in the refrigerating system are usually connected in series, the system only has one evaporation temperature, and the refrigerating and freezing chambers can not be controlled independently, so that the temperature fluctuation of the two chambers is large, and the food preservation and energy conservation are not facilitated. In order to meet the requirement of the accuracy of temperature control of different chambers of a freezing and refrigerating cabinet, a double-evaporation-temperature refrigerating system is provided in the related technology.
However, the dual evaporating temperature refrigerating system in the related art has the following problems: the double evaporators cannot independently control respective refrigeration cycles and effectively control large temperature fluctuation between two evaporation temperatures; or two completely parallel evaporator loops are adopted to realize the independent control of two evaporation refrigeration cycles, but the structure is complex, and the throttling expansion loss is relatively large.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. To this end, the embodiment of the invention provides a dual-temperature refrigeration system and a refrigeration device.
A dual temperature refrigeration system according to an embodiment of the first aspect of the invention comprises:
a compressor including a compression chamber, the compressor having a discharge port and a suction port in communication with the compression chamber;
one end of the condenser is connected to the exhaust port;
a first evaporator and a second evaporator connected in series, the first evaporator being connected between the condenser and the second evaporator, the second evaporator being connected between the azithromycin and the suction port;
a first throttling device and a second throttling device, wherein the first throttling device is arranged between the condenser and the first evaporator, and the second throttling device is arranged between the first evaporator and the second evaporator;
and one end of the first on-off valve is connected between the condenser and the first evaporator, and the other end of the first on-off valve is connected between the first evaporator and the second evaporator.
According to the dual-temperature refrigeration system provided by the embodiment of the invention, the on-off valves which are connected in parallel are arranged on the two evaporators, so that the independent control of the dual-evaporation temperature is realized, the temperature control is accurate, the fluctuation is small, the start and stop of respective refrigeration cycle can be controlled at any time according to the evaporation temperatures of the two evaporators, and the food fresh-keeping is facilitated.
In an embodiment of the present invention, the evaporator further includes a second on-off valve, one end of which is connected between the first on-off valve and the second throttling device, and the other end of which is connected between the second evaporator and the suction port.
In an embodiment of the present invention, one end of the first on-off valve is connected between the condenser and the first throttling device, and the other end of the first on-off valve is connected between the first evaporator and the second evaporator.
In an embodiment of the present invention, one end of the first on-off valve is connected between the first throttling device and the first evaporator, and the other end of the first on-off valve is connected between the first evaporator and the second evaporator.
In the embodiment of the present invention, the first throttling device or the second throttling device is one or a combination of any several of a capillary tube, a one-way valve, an electronic expansion valve, or a thermal expansion valve.
In an embodiment of the present invention, the compressor is a reciprocating compressor or a rotary compressor.
In an embodiment of the present invention, a dry filter is disposed between the condenser and the first throttling device.
The refrigeration device according to the embodiment of the second aspect of the invention is applied to the dual-temperature refrigeration system in the embodiment of the first aspect of the invention.
In an embodiment of the present invention, the refrigeration apparatus includes a refrigerating region and a freezing region, and the first evaporator and the second evaporator are respectively used for controlling the temperature of the refrigerating region and the freezing region.
Drawings
FIG. 1 is a schematic diagram of a dual temperature refrigeration system according to a first embodiment of the present invention;
FIG. 2 is a schematic diagram of a dual temperature refrigeration system according to a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of a dual-temperature refrigeration system according to a third embodiment of the invention.
Reference numerals:
1. a compressor; 11. an air suction port; 12. an exhaust port; 13. a compression chamber; 21. a condenser; 22. a first evaporator; 23. a second evaporator; 31. a first throttling device; 32. a second throttling device; 41. a first on-off valve; 42. a second on-off valve.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
A dual temperature refrigeration system according to an embodiment of the first aspect of the present invention will now be described with reference to fig. 1 to 2.
As shown in fig. 1 to 2, the dual temperature refrigeration system according to the embodiment of the first aspect of the present invention includes a compressor 1, a condenser 21, a first evaporator 22, and a second evaporator 23 connected in this order.
The compressor 1 is used for compressing and refrigerating, the compressor 1 comprises a compression cavity 13 and an exhaust port 12, and a suction port 11 is arranged on the compression cavity 13.
The condenser 21 condenses the refrigerant, the condenser 21 is connected between the discharge port 12 and the first evaporator 22, and the refrigerant discharged from the discharge port 12 of the compressor 1 is condensed by the condenser 21 and discharged into the first evaporator 22 and the second evaporator 23.
A first throttle device 31 and a second throttle device 32, the first throttle device 31 being disposed between the condenser 21 and the first evaporator 22, the second throttle device 32 being disposed between the first evaporator 22 and the second evaporator 23.
And a first on/off valve 41, one end of the first on/off valve 41 being connected between the condenser 21 and the first evaporator 22, and the other end thereof being connected between the first evaporator 22 and the second evaporator 23. The refrigerant flowing out of the condenser 21 has two flow paths, namely, the refrigerant flows through the first throttling device 31, the first evaporator 22, the second throttling device 32 and the second evaporator 23 in sequence and finally flows into the compressor 1; secondly, the refrigerant flows through the first on-off valve 41, the second throttling device 32 and the second evaporator 23 in sequence and finally flows into the compressor 1.
According to the dual-temperature refrigeration system provided by the embodiment of the invention, the on-off valves connected in parallel are arranged on the evaporators, so that the independent control of the dual-evaporation temperature is realized, the temperature control is accurate, the fluctuation is small, the start and stop of respective refrigeration cycle can be controlled at any time according to the evaporation temperatures of the two evaporators, and the food fresh-keeping is facilitated.
In the embodiment of the present invention, in order to further realize the independent control of the first evaporator 22 and the second evaporator 23, the dual temperature refrigeration system further includes a second cut-off valve 42, one end of the second cut-off valve 42 is connected between the first cut-off valve 41 and the second throttling device 32, and the other end is connected between the second evaporator 23 and the suction port 11. The refrigerant flowing out of the condenser 21 has three flow paths, i.e., flows through the first throttling device 31, the first evaporator 22, the second throttling device 32 and the second evaporator 23 in sequence, and finally flows into the compressor 1; secondly, the refrigerant flows through the first on-off valve 41, the second throttling device 32 and the second evaporator 23 in sequence and finally flows into the compressor 1; and thirdly, the refrigerant flows through the first on-off valve 41 and the second on-off valve 42 in sequence and finally flows into the compressor 1.
In the embodiment of the present invention, the first on-off valve 41 is connected between the condenser 21 and the first throttling device 31 at one end and between the first evaporator 22 and the second evaporator 23 at the other end.
In the embodiment of the present invention, the first on-off valve 41 is connected between the first throttle device 31 and the first evaporator 22 at one end, and between the first evaporator 22 and the second evaporator 23 at the other end.
In some embodiments, the first throttling device 31 or the second throttling device 32 is one or a combination of any of a capillary tube, a one-way valve, an electronic expansion valve, or a thermal expansion valve.
In some embodiments, the compressor 1 is a reciprocating compressor 1 or a rotary compressor 1.
In the embodiment of the present invention, a dry filter is provided between the condenser 21 and the first throttle device 31.
According to the refrigeration device of the embodiment of the second aspect of the invention, the dual-temperature refrigeration system of the embodiment of the first aspect of the invention is applied, and the refrigeration function of the refrigeration device is realized through the dual-temperature refrigeration system.
In some embodiments, the refrigeration apparatus includes a refrigeration region and a freezing region, such as a freezer and a refrigerator in a common household refrigerator, and the first evaporator 22 and the second evaporator 23 in the dual temperature refrigeration system are used for refrigeration operation of the refrigeration region and the freezing region, respectively. The refrigerating device utilizing the dual-temperature refrigerating system can realize independent temperature control of the refrigerating area and the freezing area.
A dual temperature refrigeration system according to an embodiment of the present invention will be described with reference to fig. 1 to 2. It is to be understood that the following description is illustrative only and is not intended to be in any way limiting.
Example one
As shown in fig. 1, the dual temperature refrigeration system includes: compressor 1, condenser 21, first evaporator 22, second evaporator 23, first throttle device 31, second throttle device 32, and first on-off valve 41.
The compressor 1 is used for compressing a refrigerant, an exhaust port 12 is arranged at the top of the compressor 1, a compression cavity 13 is arranged in the compressor 1, and a suction port 11 is arranged on the compression cavity 13.
The condenser 21 is connected to the exhaust port 12 of the compressor 1 at one end, and is connected to the first evaporator 22 at the other end, and the end of the first evaporator 22 away from the condenser 21 is connected to the second evaporator 23, i.e. the first evaporator 22 and the second evaporator 23 are connected in series. A first throttling device 31 is arranged between the first evaporator 22 and the condenser 21, and a second throttling device 32 is arranged between the second evaporator 23 and the first evaporator 22.
The first on-off valve 41 has one end connected between the condenser 21 and the first throttle device 31 and the other end connected between the first evaporator 22 and the second evaporator 23.
In this embodiment, the dual-temperature refrigeration system has three operating modes:
first, when both the first evaporator 22 and the second evaporator 23 require cooling, the first on-off valve 41 is closed, the refrigerant flowing out of the condenser flows through the first throttling device 31, the first evaporator 22, the second throttling device 32, and the second evaporator 23 in this order, and the refrigerant continues the refrigeration cycle in the first evaporator 22 and the second evaporator 23, and is maintained at a constant evaporation temperature.
Second, when the first evaporator 22 does not require cooling and the second evaporator 23 requires cooling, the first on-off valve 41 is opened, the refrigerant flowing out of the condenser flows through the first on-off valve 41, the second throttling device 32, and the second evaporator 23 in this order, and the refrigerant is continuously circulated in the second evaporator 23 to maintain a constant evaporation temperature.
Third, when neither the first evaporator 22 nor the second evaporator 23 needs to be cooled, the system stops operating.
Example two
As shown in fig. 2, the dual temperature refrigeration system in the present embodiment is different from the dual temperature refrigeration system in the first embodiment in that the dual temperature refrigeration system further includes a second on-off valve 42, and one end of the second on-off valve 42 is connected between the first on-off valve 41 and the second throttling device 32, and the other end is connected between the second evaporator 23 and the suction port 11. The rest of the system is the same as the dual-temperature refrigeration system in the first embodiment, and the description thereof is omitted.
In this embodiment, the dual-temperature refrigeration system has four operation modes:
first, when both the first evaporator 22 and the second evaporator 23 require cooling, the first on-off valve 41 and the second on-off valve 42 are closed, the refrigerant flowing out of the condenser flows through the first throttling device 31, the first evaporator 22, the second throttling device 32, and the second evaporator 23 in this order, and the refrigerant continues a cooling cycle in the first evaporator 22 and the second evaporator 23, and a constant evaporation temperature is maintained.
Second, when the first evaporator 22 does not require cooling and the second evaporator 23 requires cooling, the first on-off valve 41 is opened, the second on-off valve 42 is closed, the refrigerant flowing out of the condenser flows through the first on-off valve 41, the second throttling device 32, and the second evaporator 23 in this order, and the refrigerant continues the refrigeration cycle in the second evaporator 23 and maintains a constant evaporation temperature.
Third, when the first evaporator 22 needs cooling and the second evaporator 23 does not need cooling, the first on-off valve 41 is closed, the second on-off valve 42 is opened, the refrigerant flowing out of the condenser flows through the first throttling device 31, the first evaporator 22, and the second on-off valve 42 in this order, and the refrigerant continues the refrigeration cycle in the first evaporator 22 and is maintained at a constant evaporation temperature.
Fourth, when neither the first evaporator 22 nor the second evaporator 23 needs to be cooled, the system stops operating.
EXAMPLE III
As shown in fig. 3, the dual temperature refrigeration system in the present embodiment is different from the dual temperature refrigeration system in the second embodiment in that a first on-off valve 41 is connected between the first throttle device 31 and the first evaporator 22 at one end and between the first evaporator 22 and the second evaporator 23 at the other end. The rest parts and the working mode are the same as those of the dual-temperature refrigeration system in the second embodiment, and the description is omitted.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A dual temperature refrigeration system, comprising:
a compressor including a compression chamber, the compressor having a discharge port and a suction port in communication with the compression chamber;
one end of the condenser is connected to the exhaust port;
a first evaporator and a second evaporator connected in series, the first evaporator being connected between the condenser and the second evaporator, the second evaporator being connected between the azithromycin and the suction port;
a first throttling device and a second throttling device, wherein the first throttling device is arranged between the condenser and the first evaporator, and the second throttling device is arranged between the first evaporator and the second evaporator;
and one end of the first on-off valve is connected between the condenser and the first evaporator, and the other end of the first on-off valve is connected between the first evaporator and the second evaporator.
2. A dual temperature refrigeration system as recited in claim 1 further comprising a second on-off valve connected between said first on-off valve and said second throttling means at one end and between said second evaporator and said suction port at the other end.
3. A dual temperature refrigeration system as recited in claim 2 wherein said first on-off valve is connected between said condenser and said first throttling means at one end and between said first evaporator and said second evaporator at the other end.
4. A dual temperature refrigeration system as recited in claim 2 wherein said first on-off valve is connected between said first throttling means and said first evaporator at one end and said first evaporator and said second evaporator at the other end.
5. A dual temperature refrigeration system according to any of claims 1 to 4 wherein said first throttling means or said second throttling means is one or a combination of any of a capillary tube, a one-way valve, an electronic expansion valve or a thermostatic expansion valve.
6. A dual temperature refrigeration system as recited in claim 1 wherein said compressor is a reciprocating compressor or a rotary compressor.
7. A dual temperature refrigeration system as recited in claim 1 wherein a desiccant filter is disposed between said condenser and said first throttling means.
8. A dual temperature refrigeration system as recited in claim 1 wherein a refrigerant storage tank is disposed between said second evaporator and said compressor.
9. A refrigeration apparatus comprising a dual temperature refrigeration system according to any of claims 1 to 8.
10. A cold appliance according to claim 9, wherein the cold appliance comprises a cold storage region and a freezing region, and the first evaporator and the second evaporator are used to control the temperature of the cold storage region and the freezing region, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110336416.0A CN113091341A (en) | 2021-03-29 | 2021-03-29 | Double-temperature refrigerating system and refrigerating device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110336416.0A CN113091341A (en) | 2021-03-29 | 2021-03-29 | Double-temperature refrigerating system and refrigerating device |
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| CN113091341A true CN113091341A (en) | 2021-07-09 |
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| CN202110336416.0A Pending CN113091341A (en) | 2021-03-29 | 2021-03-29 | Double-temperature refrigerating system and refrigerating device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119321624A (en) * | 2024-12-11 | 2025-01-17 | 浙江思科制冷股份有限公司 | Double-evaporator non-isothermal water chilling unit and control method thereof |
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| CN119321624A (en) * | 2024-12-11 | 2025-01-17 | 浙江思科制冷股份有限公司 | Double-evaporator non-isothermal water chilling unit and control method thereof |
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