CN212339692U - Air refrigerating unit - Google Patents
Air refrigerating unit Download PDFInfo
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- CN212339692U CN212339692U CN202020931388.8U CN202020931388U CN212339692U CN 212339692 U CN212339692 U CN 212339692U CN 202020931388 U CN202020931388 U CN 202020931388U CN 212339692 U CN212339692 U CN 212339692U
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Abstract
The utility model relates to an air refrigerating unit, which comprises an air compressor, an air centrifugal refrigerating expander, a first air cooler, an air heat exchanger, a cold storage and a dehydrator, wherein the cold air outlet end of the cold storage is connected with the air inlet end of the dehydrator, the air outlet end of the dehydrator is connected with the lower air inlet end of the air heat exchanger, and the upper air outlet end of the air heat exchanger is connected with the air inlet end of the air compressor; the air compressor is connected with a first air cooler, and the first air cooler is connected with an air centrifugal refrigeration expander; the compression end is connected with an air heat exchanger, the air heat exchanger is connected with an air centrifugal refrigeration expander, and the air outlet end of the expansion end is connected with a refrigeration house; the utility model has simple structure, and can adjust the energy output of the unit according to the load change in the refrigeration house; the water eliminator is designed at the air outlet end of the refrigeration house, so that the problem that the moisture content of air flow coming out of the refrigeration house and entering the unit is high, the unit frosts, and the stability and the operation efficiency of the unit are influenced is avoided.
Description
Technical Field
The utility model relates to a refrigeration technology field especially relates to an air refrigerating unit.
Background
With the limitation of Freon use and the acceleration of elimination, the refrigerant adopting natural working media becomes a main direction of future development. The common natural working medium refrigerant comprises ammonia and CO2Hydrocarbon, air, etc. The air covers the surface of the earth, is environment-friendly and easily available, and has great potential as a refrigerant to replace the traditional refrigerant. The critical temperature of the air is low, and the application of low-temperature refrigeration and freezing can be realized.
Patent publication No. CN106642782A, entitled enclosed refrigerator, discloses the following technical scheme: the expansion work recovery device comprises a centrifugal fan, an expansion work recovery device, a recooling device and a cold-using unit, wherein the centrifugal fan, the expansion work recovery device, the recooling device and the cold-using unit are mutually communicated through pipelines, an outlet of an air compressor is connected with an inlet of the centrifugal compressor through a pipeline, an outlet of the centrifugal fan is connected with an inlet of a hot end of the recooling device through a pipeline, an outlet of the hot end of the recooling device is connected with an inlet of the turbo expander through a pipeline, an outlet of the turbo expander is connected with an inlet of the cold-using unit through a pipeline, an outlet of the cold-using unit is connected with an inlet of a cold end of the recooling device through a. This air refrigerating machine group designs for closed system, does not see the dehydrator design, when being applied to freezer refrigerating system, probably because of having moisture in the freezer, leads to getting into air refrigerating machine's air water content higher, influences the operating efficiency and the stability of unit.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
In order to solve the above problems in the prior art, the utility model provides an air refrigerating unit, its easy operation, operating efficiency and stability are good, and are practical.
(II) technical scheme
In order to achieve the above object, the utility model discloses a main technical scheme include:
an air refrigerating unit comprises an air compressor, an air centrifugal refrigerating expander, a first air cooler, an air heat exchanger, a refrigeration house and a dehydrator, wherein the cold air outlet end of the refrigeration house is connected with the air inlet end of the dehydrator; the compressed air outlet end of the air compressor is connected with the air inlet end of a first air cooler, and the air outlet end of the first air cooler is connected with the air inlet end of the compression end of the air centrifugal refrigeration expander; the air outlet end of the compression end is connected with the upper air inlet end of the air heat exchanger, the lower air outlet end of the air heat exchanger is connected with the air inlet end of the expansion end of the air centrifugal refrigeration expansion machine, and the air outlet end of the expansion end is connected with the refrigeration house.
Furthermore, the air outlet end of the compression end is connected with the air inlet end of the air heat exchanger through a second air cooler, the air inlet end of the second air cooler is connected with the air outlet end of the compression end, and the air outlet end of the second air cooler is connected with the air inlet end of the air heat exchanger.
(III) advantageous effects
The utility model has the advantages that: the structure is simple, and the energy output of the unit is adjusted according to the change of the load in the refrigeration house; the water remover is designed at the air outlet end of the refrigeration house, so that the problem that the stability and the operation efficiency of the unit are influenced due to the fact that the moisture content of air flow coming out of the refrigeration house and entering the unit is high and the unit frosts is avoided; the unit is provided with an air cooler and a dehydrator, has higher efficiency in low-temperature application, and is suitable for a refrigeration house refrigeration system which is not completely closed.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
For a better understanding of the present invention, reference will now be made in detail to the present invention, examples of which are illustrated in the accompanying drawings.
An air refrigerating unit is shown in figure 1 and comprises an air compressor 1, an air centrifugal refrigerating expander 2, a first air cooler 3, a second air cooler 4, an air heat exchanger 5, a cold storage 6 and a dehydrator 7, wherein the cold air outlet end of the cold storage 6 is connected with the air inlet end of the dehydrator 7, the air outlet end of the dehydrator 7 is connected with the lower air inlet end 52 of the air heat exchanger 5, and the upper air outlet end 53 of the air heat exchanger 5 is connected with the air inlet end of the air compressor 1; the compressed air outlet end of the air compressor 1 is connected with the air inlet end of the first air cooler 3, and the air outlet end of the first air cooler 3 is connected with the air inlet end of the compression end 21 on the air centrifugal refrigeration expander 2; the end of giving vent to anger of compression end 21 is connected with the inlet end of second air cooler 4, the end of giving vent to anger of second air cooler 4 is connected with the last inlet end 51 of air heat exchanger 5, the end 54 of giving vent to anger down of air heat exchanger 5 is connected with the inlet end of the expansion end 22 on the air centrifugal refrigeration expander 2, the end of giving vent to anger of expansion end 22 is connected with freezer 6.
In this embodiment, the air refrigerating unit has the following working procedures: cold air from the refrigeration house 6 enters the air heat exchanger 5 after being dewatered by the dehydrator 7; the cold air entering the air heat exchanger 5 from the dehydrator 7 exchanges heat with the air flow entering the expansion end 22 of the air centrifugal refrigeration expander 2, the temperature of the cold air is increased, and then the cold air enters the air compressor 1, so that the pressure and the temperature of the air flow are improved; the air flows through the first air cooler 3 to exchange heat, and the temperature is reduced to a certain design point; the air flow from the first air cooler 3 enters the compression end 21 of the air centrifugal refrigeration expander 2, and after compression, the pressure and the temperature rise; then the air enters a second air cooler 4, the temperature of the air flow is reduced to a certain design point after heat exchange, and the air flow reaches a certain value after being pressurized twice; the air flow passing through the second air cooler 4 enters an air heat exchanger 5, and the temperature of the air flow is reduced to a certain design value after heat exchange; the cooled air flow goes to an expansion end 22 on the air centrifugal refrigeration expander 2, the pressure and the temperature of the expanded air flow are reduced to certain design values, and then the air flow enters the refrigeration house 6 to refrigerate the articles in the refrigeration house 6; air compressor machine 1, air centrifugation refrigeration expander 2, first air cooler 3, second air cooler 4, air heat exchanger 5, freezer 6 and dehydrator 7 are prior art, and this application does not carry out detailed description to its respective concrete structure, and this application focus on the combination innovation between above-mentioned each part.
Through the process, the air refrigerating unit continuously leads the air in the refrigeration house 6 out for drying and refrigeration and supplies the air back to the refrigeration house 6, thereby achieving the purpose of refrigeration. The air refrigerating unit can realize the change of the storage temperature between 60 ℃ below zero and 20 ℃ below zero, directly adopts air refrigeration, is green and environment-friendly, and provides a choice for the replacement of future refrigerants; the unit is intelligently designed, and the requirement of the cold quantity of the change of the refrigeration house is met through frequency conversion control; the air centrifugal refrigeration expander 2 is integrally designed, compression and expansion are carried out simultaneously, and the obtained expansion work is directly used as the kinetic energy of the compressor, so that the efficiency of the whole machine is improved.
In the embodiment, the air refrigerating unit drives the air centrifugal refrigerating expansion machine 2 to operate through the air compressor 1, so that the refrigeration of the system is realized; the unit carries out frequency conversion control on the air centrifugal refrigeration expander 2 through a control center, and adjusts the energy output of the unit according to the change of the load in the refrigeration house 6; the dehumidifier 7 is designed at the air outlet end of the refrigeration house 6, so that the problem that the moisture content of air flow entering the unit from the refrigeration house 6 is high, the unit frosts, and the stability and the operation efficiency of the unit are influenced is avoided.
The above is only the preferred embodiment of the present invention, and all the equivalent changes and modifications made according to the claims of the present invention should be covered by the present invention.
Claims (2)
1. An air refrigerating unit is characterized by comprising an air compressor (1), an air centrifugal refrigerating expander (2), a first air cooler (3), an air heat exchanger (5), a refrigeration house (6) and a dehydrator (7), wherein the cold air outlet end of the refrigeration house (6) is connected with the air inlet end of the dehydrator (7), the air outlet end of the dehydrator (7) is connected with the lower air inlet end (52) of the air heat exchanger (5), and the upper air outlet end (53) of the air heat exchanger (5) is connected with the air inlet end of the air compressor (1); the compressed air outlet end of the air compressor (1) is connected with the air inlet end of the first air cooler (3), and the air outlet end of the first air cooler (3) is connected with the air inlet end of the compression end (21) on the air centrifugal refrigeration expander (2); the air outlet end of the compression end (21) is connected with an upper air inlet end (51) of the air heat exchanger (5), a lower air outlet end (54) of the air heat exchanger (5) is connected with an air inlet end of an expansion end (22) on the air centrifugal refrigeration expansion machine (2), and an air outlet end of the expansion end (22) is connected with the refrigeration house (6).
2. An air refrigeration unit according to claim 1, characterized in that the outlet of the compression side (21) is connected to the inlet of the upper side (51) of the air heat exchanger (5) via a second air cooler (4), the inlet of the second air cooler (4) being connected to the outlet of the compression side (21), the outlet of the second air cooler (4) being connected to the inlet of the upper side (51) of the air heat exchanger (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020931388.8U CN212339692U (en) | 2020-05-28 | 2020-05-28 | Air refrigerating unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020931388.8U CN212339692U (en) | 2020-05-28 | 2020-05-28 | Air refrigerating unit |
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| Publication Number | Publication Date |
|---|---|
| CN212339692U true CN212339692U (en) | 2021-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020931388.8U Active CN212339692U (en) | 2020-05-28 | 2020-05-28 | Air refrigerating unit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112944775A (en) * | 2021-02-10 | 2021-06-11 | 西安交通大学 | Low-temperature refrigerator |
| CN113154770A (en) * | 2021-02-10 | 2021-07-23 | 西安交通大学 | Refrigeration house refrigerating system |
-
2020
- 2020-05-28 CN CN202020931388.8U patent/CN212339692U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112944775A (en) * | 2021-02-10 | 2021-06-11 | 西安交通大学 | Low-temperature refrigerator |
| CN113154770A (en) * | 2021-02-10 | 2021-07-23 | 西安交通大学 | Refrigeration house refrigerating system |
| CN113154770B (en) * | 2021-02-10 | 2022-08-05 | 西安交通大学 | Refrigeration house refrigerating system |
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