CN218001864U - Refrigerating system - Google Patents
Refrigerating system Download PDFInfo
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- CN218001864U CN218001864U CN202221911995.3U CN202221911995U CN218001864U CN 218001864 U CN218001864 U CN 218001864U CN 202221911995 U CN202221911995 U CN 202221911995U CN 218001864 U CN218001864 U CN 218001864U
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Abstract
The utility model provides a refrigerating system, which comprises a compressor, a condenser, a medium-temperature evaporator, a low-temperature evaporator, a gas-liquid separator, a first throttling component and a second throttling component, wherein a gas outlet of the compressor is respectively connected with the condenser and the second throttling component; the first throttling assembly is arranged between the outlet of the condenser and the gas-liquid separator and is used for ejecting the medium-temperature refrigerant in the medium-temperature evaporator into the gas-liquid separator; the second throttling component is arranged between the compressor and the gas-liquid separator and is used for ejecting the low-temperature refrigerant in the low-temperature evaporator into the gas-liquid separator; a gas outlet of the gas-liquid separator is connected with a gas inlet of the compressor through a gas return pipe, and a liquid outlet of the gas-liquid separator is respectively connected with the medium-temperature evaporator and the low-temperature evaporator; the first and second throttling assemblies comprise ejectors or ejectors. The utility model discloses a multi-temperature-zone refrigerating system with vortex tube and ejector when improving system performance, can also satisfy demands such as air condition, life hot water.
Description
Technical Field
The utility model belongs to the technical field of the refrigeration plant technique and specifically relates to a multi-temperature-zone refrigerating system is related to.
Background
With the progress of science and technology, the living standard of people is improved, and the energy consumption is increased. The energy consumption of buildings has become the great head, wherein the energy consumption of the heating, ventilating and air conditioning industry accounts for most of the energy consumption. Under the background of the era of 'carbon peak reaching and carbon neutralization', energy conservation and emission reduction are in need.
In a traditional vapor compression refrigeration system, an expansion valve is adopted for throttling and depressurizing, so that high-pressure working media are throttled to cause mechanical energy loss and influence the system performance; moreover, the traditional vapor compression refrigeration system cannot meet a plurality of temperature requirements at the same time, so that the traditional vapor compression refrigeration system can only be used in a single temperature zone, is monotonous in use occasion and cannot meet the use requirement of a plurality of temperature zones.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a refrigerating system to solve the above-mentioned technical problem who exists among the prior art.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the utility model provides a pair of refrigerating system, including compressor, condenser, medium temperature evaporimeter, low temperature evaporimeter, vapour and liquid separator, first throttle subassembly, second throttle subassembly, wherein:
the air outlet of the compressor is respectively connected with the condenser and the second throttling assembly;
the first throttling assembly is arranged between the outlet of the condenser and the gas-liquid separator and is used for ejecting the medium-temperature refrigerant in the medium-temperature evaporator into the gas-liquid separator;
the second throttling assembly is arranged between the compressor and the gas-liquid separator and is used for ejecting the low-temperature refrigerant in the low-temperature evaporator into the gas-liquid separator;
a gas outlet of the gas-liquid separator is connected with a gas inlet of the compressor through a gas return pipe, and a liquid outlet of the gas-liquid separator is respectively connected with the medium-temperature evaporator and the low-temperature evaporator;
the first and second throttling assemblies comprise ejectors or ejectors.
As a further improvement, the refrigeration system further comprises a vortex tube connected to the gas outlet of the compressor, the second throttling assembly is connected to the low-temperature outlet side of the vortex tube, and the condenser is connected to the high-temperature outlet side of the vortex tube.
As a further improvement of the utility model, the low-temperature evaporator and an electronic expansion valve are arranged between the gas-liquid separators.
As a further improvement of the utility model, the gas-liquid separator is a heat exchanger type separator, and the gas-liquid separator is further provided with a heat exchange bypass for heat exchange.
As a further improvement, the heat exchange bypass is provided with a water pump and a surface cooler.
As a further improvement, the surface air cooler is a fan air-cooled surface air cooler.
As a further improvement of the utility model, the inner pipeline of the gas-liquid separator is of a coil pipe type layout structure.
As a further improvement of the utility model, the medium in the surface cooler is water or glycol water solution.
As a further improvement of the utility model, the condenser is a shell and tube heat exchanger or a double-pipe heat exchanger.
Compared with the prior art, the utility model following beneficial effect has:
the utility model provides a refrigerating system through designing a refrigerating system with ejector or sprayer, replaces the choke valve and can reduce the throttle loss, solves the throttle loss of throttle valve among the traditional vapor compression refrigerating system to can improve system performance.
The utility model discloses a further embodiment utilizes the vortex effect of vortex tube, makes the system under invariable exhaust pressure, makes the condenser provide higher heat transfer effect, can further improve the super-cooled rate that gets into the evaporator refrigerant.
The utility model discloses gas-liquid separator adopts the heat exchanger form, still can realize heat transfer between the fluid when realizing the vapour-liquid separation.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic diagram of a refrigeration system of the present invention;
fig. 2 is a schematic diagram of the interface structure of the ejector in the refrigeration system of the present invention.
In figure 1, a compressor; 2. a vortex tube; 3. a condenser; 4. a first ejector; 5. a medium temperature evaporator; 6. a surface cooler; 7. a water pump; 8. a blower; 9. a gas-separating heat exchanger; 10. an electronic expansion valve; 11. a low temperature evaporator; 12. and a second ejector.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1, the utility model provides a refrigerating system, including compressor 1, condenser 3, medium temperature evaporimeter 5, low temperature evaporimeter 11, vapour and liquid separator, first throttle subassembly, second throttle subassembly, wherein: the medium-temperature evaporator 5 and the low-temperature evaporator 11 are respectively applied to different cooling demand scenes.
The air outlet of the compressor 1 is respectively connected with the condenser 3 and the second throttling component;
the first throttling component is arranged between the outlet of the condenser 3 and the gas-liquid separator and is used for ejecting the medium-temperature refrigerant in the medium-temperature evaporator 5 into the gas-liquid separator;
the second throttling component is arranged between the compressor 1 and the gas-liquid separator and is used for ejecting the low-temperature refrigerant in the low-temperature evaporator 11 into the gas-liquid separator;
a gas outlet of the gas-liquid separator is connected with an air inlet of the compressor 1 through an air return pipe, and a liquid outlet of the gas-liquid separator is respectively connected with the medium-temperature evaporator 5 and the low-temperature evaporator 11;
as shown in fig. 2, the first and second throttling assemblies comprise ejectors or eductors.
Specifically, the ejector comprises three interfaces which are respectively a main ejection port a, an ejected port b and an outlet c, a low-temperature refrigerant subjected to heat exchange by the condenser 3 enters the main ejection port a of the first ejector, and is then mixed with a refrigerant in the ejected medium-temperature evaporator 5 in the ejector and then discharged into the gas-divided heat exchanger 9 through the outlet c.
The utility model provides a refrigerating system through designing a refrigerating system with ejector or sprayer, replaces the choke valve and can reduce the throttle loss, solves the throttle loss of throttle valve among the traditional vapor compression refrigerating system to can improve system performance.
In some embodiments, the refrigeration system further comprises a vortex tube 2 connected to the outlet of the compressor 1, the second throttling assembly is connected to the low-temperature outlet side of the vortex tube 2, and the condenser 3 is connected to the high-temperature outlet side of the vortex tube 2. The vortex tube 2 has simple structure, low cost and no moving parts, can divide fluid with constant pressure into cold fluid and hot fluid, can further improve the temperature of refrigerant entering a condenser when being applied to a refrigerating system, further reduces the temperature of refrigerant entering an evaporator, can realize the requirements of multi-temperature-zone refrigeration, air conditioning, domestic hot water and the like because the supercooling degree of the refrigerant entering the evaporator can be increased, and one set of unit can distribute through different flow paths.
The utility model discloses a in the further embodiment, utilize the vortex effect of vortex tube 2, make the system under invariable exhaust pressure, make condenser 3 provide higher heat transfer effect to can further improve the super-cooled rate that gets into the evaporator refrigerant.
The utility model discloses gas-liquid separator adopts the heat exchanger form, still can realize heat transfer between the fluid when realizing the vapour-liquid separation.
Further, an electronic expansion valve 10 is arranged between the low-temperature evaporator 11 and the gas-liquid separator.
In the present embodiment, the gas-liquid separator is a heat exchanger type separator, that is, the gas-liquid separator is the gas-liquid separator heat exchanger 9, and hereinafter, the gas-liquid separator is collectively referred to as the gas-liquid separator heat exchanger 9, and further includes a heat exchange bypass that performs heat exchange with the gas-liquid separator heat exchanger 9 to reduce the temperature of the refrigerant. The gas-separating heat exchanger is designed into a heat exchanger type, so that gas-liquid separation is realized, and heat exchange between fluids can be realized.
Specifically, a water pump 7 and a surface cooler 6 are arranged on the heat exchange bypass.
Specifically, the surface cooler 6 is a fan air-cooled surface cooler 6.
In this embodiment, the internal piping of the gas-liquid heat exchanger 9 has a coil-type layout structure.
In some embodiments, the medium in surface cooler 6 is water or an aqueous glycol solution.
Further, the condenser 3 is a shell-and-tube heat exchanger or a double-tube heat exchanger.
The using method comprises the following steps: when the refrigerating system is operated, a high-temperature high-pressure gaseous refrigerant is compressed by the compressor 1 and then enters the vortex tube 2, the high-temperature high-pressure gaseous refrigerant is divided into two parts by the vortex tube 2, one part of the refrigerant enters the condenser 3 for condensation and heat release, the condensed refrigerant serves as main injection flow and enters the main injection port of the first injector 4 and injects the gaseous refrigerant of the medium-temperature evaporator 5, and the two parts of the refrigerant are mixed and then enter the gas-divided heat exchanger 9 through the outlet of the first injector 4; the other part of the refrigerant enters a main injection port of the second injector 12 as main injection flow and injects the gaseous refrigerant of the low-temperature evaporator 11, and the two parts of the refrigerant are mixed and then enter the gas-liquid heat exchanger 9 through an outlet of the second injector 12. The low-temperature and low-pressure gaseous refrigerant in the gas-dividing heat exchanger 9 enters the compressor 1 through the gas outlet of the gas-dividing heat exchanger 9 to be compressed. The low-temperature liquid refrigerant in the gas-separation heat exchanger 9 is divided into two paths, wherein one path enters a low-temperature evaporator 11 through a liquid outlet of the gas-separation heat exchanger 9 and an electronic expansion valve 10 to evaporate and absorb heat; the low-temperature gaseous refrigerant from the low-temperature evaporator 11 enters the injection port of the second injector 12 as injected flow. The other path enters a medium temperature evaporator 5 through a liquid outlet of the gas-distributing heat exchanger 9 to evaporate and absorb heat; the low-temperature gaseous refrigerant from the medium-temperature evaporator 5 is taken as injected flow to enter the injected port of the first injector 4 and is sent into the gas-divided heat exchanger 9.
In this embodiment, the gas-liquid separation of the gas-liquid heat exchanger 9 is realized, and at the same time, the heat exchange between fluids is also realized. In particular, the internal piping of the gas-liquid heat exchanger 9 may be designed in the form of a coil. The medium in the surface cooler 6 can adopt water, glycol aqueous solution or other media, and the medium in the flow path is driven by the water pump 7 to circulate. The high-temperature water is driven by the water pump 7 and enters the internal coil of the low-temperature air-separation heat exchanger 9 for heat exchange to become low-temperature water, and the low-temperature water exchanges heat with air sent by the air blower 8 in the surface air cooler 6.
The condenser 3 can be designed as a shell-and-tube heat exchanger (or a double-tube heat exchanger or other types). By using the vortex effect of the vortex tube 2, the system can provide higher heat exchange effect for the condenser 3 under constant exhaust pressure, can produce hot water with higher temperature, and can be used for domestic hot water. The supercooling degree of the refrigerant entering the evaporator can be further improved by utilizing the vortex effect of the vortex tube 2, the system performance is improved, and the system can be applied to the refrigeration requirements of different occasions, for example, the medium-temperature evaporator 5 can realize the refrigeration function of food. The low temperature evaporator 11 can perform a freezing function of food.
It should be noted that "inward" is a direction toward the center of the accommodating space, and "outward" is a direction away from the center of the accommodating space.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship indicated based on the orientation or positional relationship shown in fig. 1, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present 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 to implicitly indicate 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 explicitly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; 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 meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. 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 description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. 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.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. The refrigerating system is characterized by comprising a compressor, a condenser, a medium-temperature evaporator, a low-temperature evaporator, a gas-liquid separator, a first throttling component and a second throttling component, wherein:
the air outlet of the compressor is respectively connected with the condenser and the second throttling assembly;
the first throttling assembly is arranged between the outlet of the condenser and the gas-liquid separator and is used for ejecting the medium-temperature refrigerant in the medium-temperature evaporator into the gas-liquid separator;
the second throttling assembly is arranged between the compressor and the gas-liquid separator and is used for ejecting the low-temperature refrigerant in the low-temperature evaporator into the gas-liquid separator;
a gas outlet of the gas-liquid separator is connected with a gas inlet of the compressor through a gas return pipe, and a liquid outlet of the gas-liquid separator is respectively connected with the medium-temperature evaporator and the low-temperature evaporator;
the first and second throttling assemblies comprise ejectors or ejectors.
2. The refrigerant system as set forth in claim 1, further including a vortex tube connected to an outlet port of said compressor, said second throttle assembly being connected to a low temperature outlet side of said vortex tube, said condenser being connected to a high temperature outlet side of said vortex tube.
3. The refrigeration system of claim 2, further comprising an electronic expansion valve disposed between the cryogenic evaporator and the vapor-liquid separator.
4. The refrigerant system as set forth in claim 1, wherein said vapor-liquid separator is a heat exchanger type separator, and further including a heat exchange bypass in heat exchange relationship with said vapor-liquid separator.
5. The refrigeration system as recited in claim 4, wherein a water pump and a surface cooler are disposed on the heat exchange bypass.
6. The refrigeration system of claim 5, wherein the surface air cooler is a fan-cooled surface air cooler.
7. The refrigerant system as set forth in claim 4, wherein said gas-liquid separator internal piping is of a coil type configuration.
8. The refrigeration system of claim 5 wherein the medium in the surface cooler is water or an aqueous glycol solution.
9. The refrigeration system of claim 1 wherein the condenser is a shell and tube heat exchanger or a double tube heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221911995.3U CN218001864U (en) | 2022-07-21 | 2022-07-21 | Refrigerating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221911995.3U CN218001864U (en) | 2022-07-21 | 2022-07-21 | Refrigerating system |
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| Publication Number | Publication Date |
|---|---|
| CN218001864U true CN218001864U (en) | 2022-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221911995.3U Active CN218001864U (en) | 2022-07-21 | 2022-07-21 | Refrigerating system |
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|---|---|
| CN (1) | CN218001864U (en) |
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- 2022-07-21 CN CN202221911995.3U patent/CN218001864U/en active Active
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