System for regulating temperature by using waste heat of centrifugal air compressor

Abstract

A system for regulating temperature by using waste heat of a centrifugal air compressor relates to the technical field of heat recycling and comprises a cold and warm air blower, an air compressor and a refrigerator. The inlet end of the air compressor is connected with the outlet end of the cold and warm air blower and the hot water outlet end of the refrigerating machine in parallel, the outlet end of the air compressor is connected with the inlet end of the cold and warm air blower and the hot water inlet end of the refrigerating machine in parallel, and the cold water outlet end of the refrigerating machine is connected with the inlet end of the cold and warm air blower. The cold water inlet end of the refrigerating machine is connected with the outlet end of the cold and warm air blower. The problems that in the prior art, the heat recycling mode is single, the heat demand is not uniform in winter and summer, and therefore recycled heat cannot be fully utilized are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat recovery and utilization, in particular to a system for realizing temperature regulation by utilizing waste heat of a centrifugal air compressor. Background Art

[0002] At present, centrifugal air compressors have been widely used in metallurgy, chemical industry, power, textile and manufacturing fields. Due to the large amount of energy released by air compression during its operation, the research on the recovery of compression heat energy of centrifugal air compressors has gradually become popular. There are some methods for recovering the compression heat of centrifugal air compressors, but most of them focus on secondary heat exchange of hot water produced by the air compressor through the use of plate exchangers.

[0003] As the existing devices are used, their shortcomings are gradually exposed, mainly in the following aspects:

[0004] First, most of the existing methods focus on using plate heat exchangers to perform secondary heat exchange on the hot water produced by the air compressor, and then utilizing the exchanged hot water. The utilization method is relatively simple, and there is an uneven heat demand in winter and summer, resulting in the recovery of heat cannot be fully utilized.

[0005] Second, the existing lithium bromide refrigerator requires a separate heat source to exchange heat with lithium bromide during operation, which increases energy consumption.

[0006] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0007] In view of the defects in the prior art, the utility model solves the problem that the heat recovery and utilization method in the traditional technology is relatively single and there is uneven heat demand in winter and summer, resulting in the recovered heat cannot be fully utilized.

[0008] In order to solve the above problems, the utility model provides the following technical solutions:

[0009] A system for achieving temperature control by utilizing waste heat from a centrifugal air compressor, comprising a cooling and heating fan, an air compressor, and a refrigerator;

[0010] The inlet end of the air compressor is connected in parallel with the outlet end of the cooling and heating fan and the hot water outlet end of the refrigerator respectively;

[0011] The outlet end of the air compressor is connected in parallel with the inlet end of the cooling and heating fan and the hot water inlet end of the refrigerator respectively;

[0012] The cold water outlet end of the refrigerator is connected to the inlet end of the cold and warm air blower, and the cold water inlet end of the refrigerator is connected to the outlet end of the cold and warm air blower.

[0013] As an optimized solution, the inlet end of the air compressor and the outlet end of the cooling and heating fan are connected by a first pipeline, and a first pump group is provided on the first pipeline.

[0014] As an optimized solution, the outlet end of the air compressor and the inlet end of the cooling and heating fan are connected by a second pipeline, and an electric-controlled regulating valve is provided on the second pipeline.

[0015] As an optimized solution, a third pipeline connected to the hot water outlet of the refrigerator is provided on the first pipeline;

[0016] And / or, a fifth pipeline connected to the cold water inlet of the refrigerator is disposed on the first pipeline, and a second pump group is disposed on the fifth pipeline.

[0017] As an optimized solution, a fourth pipeline connected to the hot water inlet end of the refrigerator is provided on the second pipeline.

[0018] As an optimized solution, a sixth pipeline connected to the cold water outlet of the refrigerator is provided on the second pipeline; and a first three-way control valve connected to the sixth pipeline is provided on the second pipeline.

[0019] As an optimized solution, a second three-way control valve for connecting with the fifth pipeline is provided on the first pipeline.

[0020] As an optimized solution, a third three-way control valve for connecting to a third pipeline is provided on the first pipeline.

[0021] As an optimized solution, a fourth three-way control valve for connecting to a fourth pipeline is provided on the second pipeline.

[0022] As an optimized solution, the cooling and heating fan includes a heat exchange tube and a fan.

[0023] As an optimized solution, the refrigerator is a lithium bromide refrigerator.

[0024] Compared with the prior art, the beneficial effects of the utility model are:

[0025] The heat generated by the air compressor during gas compression is utilized, and the cold and warm air are blown out by the air conditioner and the air heater through cooperation with the refrigerator, thereby improving the utilization rate of the air compressor waste heat recovery and expanding the air compressor waste heat utilization mode;

[0026] The hot water from the air compressor enters the refrigerator, and the hot water acts as a heat source to heat the lithium bromide, thereby utilizing the waste heat generated by the air compressor and further expanding the utilization of the waste heat of the air compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0028] Figure 1 It is a structural schematic diagram of the utility model.

[0029] In the figure: 1-heating and cooling fan; 2-air compressor; 3-refrigeration machine; 4-first pipeline; 5-second pipeline; 6-third pipeline; 7-fourth pipeline; 8-fifth pipeline; 9-sixth pipeline; 10-electrically controlled regulating valve; 11-first pump group; 12-second pump group; 13-first three-way control valve; 14-second three-way control valve; 15-third three-way control valve; 16-fourth three-way control valve. DETAILED DESCRIPTION

[0030] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0031] like Figure 1 As shown, the system for achieving temperature control by utilizing waste heat of a centrifugal air compressor comprises a cooling and heating fan 1, an air compressor 2, and a refrigerator 3;

[0032] The inlet end of the air compressor 2 is connected in parallel with the outlet end of the cooling and heating fan 1 and the hot water outlet end of the refrigerator 3;

[0033] The outlet of the air compressor 2 is connected in parallel with the inlet of the cooling and heating fan 1 and the hot water inlet of the refrigerator 3;

[0034] The cold water outlet end of the refrigerator 3 is connected to the inlet end of the cold and warm air blower 1 , and the cold water inlet end of the refrigerator 3 is connected to the outlet end of the cold and warm air blower 1 .

[0035] The inlet end of the air compressor 2 is connected to the outlet end of the cooling and heating fan 1 by a first pipeline 4 , and a first pump group 11 is provided on the first pipeline 4 .

[0036] The outlet end of the air compressor 2 is connected to the inlet end of the cooling and heating fan 1 by a second pipeline 5 , and an electric control regulating valve 10 is provided on the second pipeline 5 .

[0037] The first pipeline 4 is provided with a third pipeline 6 connected to the hot water outlet of the refrigerator 3 .

[0038] The second pipeline 5 is provided with a fourth pipeline 7 connected to the hot water inlet end of the refrigerator 3 .

[0039] The first pipeline 4 is provided with a fifth pipeline 8 connected to the cold water inlet end of the refrigerator 3 , and the fifth pipeline 8 is provided with a second pump group 12 .

[0040] The second pipeline 5 is provided with a sixth pipeline 9 connected to the cold water outlet of the refrigerator 3 .

[0041] The second pipeline 5 is provided with a first three-way control valve 13 for connecting with the sixth pipeline 9 .

[0042] The first pipeline 4 is provided with a second three-way control valve 14 for connecting with the fifth pipeline 8 .

[0043] The first pipeline 4 is provided with a third three-way control valve 15 for connecting with the third pipeline 6 .

[0044] The second pipeline 5 is provided with a fourth three-way control valve 16 for connecting with the fourth pipeline 7 .

[0045] The air conditioner and heater 1 includes a heat exchange tube and a fan.

[0046] The refrigerator 3 is a lithium bromide refrigerator 3 .

[0047] The working principle of this system is:

[0048] When the air conditioner 1 needs to output hot air, the circulating water pumped by the first pump group 11 is first heated by the interstage heat exchanger of the air compressor 2, and the heated water is output through the electric control regulating valve 10, and flows into the heat exchange pipe in the air conditioner 1 through the fourth three-way control valve 16 and the first three-way control valve 13, and the hot air is blown out to increase the temperature of the space that needs to be heated, and then the circulating water returns to the first pump group 11 through the second three-way control valve 14 and the third three-way control valve 15 for the next cycle;

[0049] When the cold and warm air blower 1 needs to output cold air, the circulating water pumped by the first pump group 11 is first heated by the air compressor 2, and the heated water is output through the electronically controlled regulating valve 10, and flows into the lithium bromide refrigerator 3 as a heat source for cooling under the control of the fourth three-way control valve 16, and then returns to the first pump group 11 for the next cycle under the control of the third three-way control valve 15; the hot water of the air compressor enters the refrigerator, exchanges heat with lithium bromide, and turns lithium bromide into an aqueous solution, and then the hot water in the air compressor returns to the air compressor for cold water; then the lithium bromide aqueous solution exchanges heat with the water in the refrigerator and becomes gaseous, so that the water in the refrigerator becomes cold water, and the cold water exchanges heat with the air in the cold and warm air blower, becomes high-temperature water, and returns to the refrigerator;

[0050] The cold water produced by the lithium bromide refrigerator 3 flows into the heat exchange pipe in the cooling and heating fan 1 through the first three-way control valve 13, and blows out cold air to cool the space that needs to be cooled. Then the cold water returns to the second pump group 12 through the second three-way control valve 14, and is then pumped into the lithium bromide refrigerator 3 for circulating cooling.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

Claims

1. A system for temperature control using waste heat from a centrifugal air compressor, characterized in that: It comprises a cooling and heating fan (1), an air compressor (2) and a refrigerator (3); The inlet end of the air compressor (2) is connected in parallel with the outlet end of the cooling and heating fan (1) and the hot water outlet end of the refrigerator (3); The outlet end of the air compressor (2) is connected in parallel with the inlet end of the cooling and heating fan (1) and the hot water inlet end of the refrigerator (3); The cold water outlet end of the refrigerator (3) is connected to the inlet end of the cold and warm air blower (1), and the cold water inlet end of the refrigerator (3) is connected to the outlet end of the cold and warm air blower (1).

2. The system for temperature control using waste heat from a centrifugal air compressor according to claim 1, characterized in that: The inlet end of the air compressor (2) and the outlet end of the cooling and heating fan (1) are connected by a first pipeline (4), and a first pump group (11) is provided on the first pipeline (4).

3. The system for temperature control using waste heat from a centrifugal air compressor according to claim 2, characterized in that: The outlet end of the air compressor (2) and the inlet end of the cooling and heating fan (1) are connected by a second pipeline (5), and an electric control regulating valve (10) is provided on the second pipeline (5).

4. The system for temperature control using waste heat of a centrifugal air compressor according to claim 3, characterized in that: The first pipeline (4) is provided with a third pipeline (6) connected to the hot water outlet of the refrigerator (3); And / or, the first pipeline (4) is provided with a fifth pipeline (8) connected to the cold water inlet end of the refrigerator (3), and the fifth pipeline (8) is provided with a second pump group (12).

5. The system for temperature control using waste heat from a centrifugal air compressor according to claim 4, characterized in that: The second pipeline (5) is provided with a fourth pipeline (7) connected to the hot water inlet end of the refrigerator (3).

6. The system for temperature control using waste heat of a centrifugal air compressor according to claim 3, characterized in that: The second pipeline (5) is provided with a sixth pipeline (9) connected to the cold water outlet end of the refrigerator (3), and the second pipeline (5) is provided with a first three-way control valve (13) for connecting to the sixth pipeline (9).

7. The system for temperature control using waste heat from a centrifugal air compressor according to claim 4, characterized in that: The first pipeline (4) is provided with a second three-way control valve (14) for connecting to the fifth pipeline (8).

8. The system for temperature control using waste heat from a centrifugal air compressor according to claim 5, characterized in that: The first pipeline (4) is provided with a third three-way control valve (15) for connecting with the third pipeline (6); The second pipeline (5) is provided with a fourth three-way control valve (16) for connecting to a fourth pipeline (7).

9. A system for temperature control using waste heat from a centrifugal air compressor according to any one of claims 1 to 8, characterized in that: The cooling and heating fan (1) comprises a heat exchange tube and a fan.

10. A system for temperature control using waste heat from a centrifugal air compressor according to any one of claims 1 to 8, characterized in that: The refrigerator (3) is a lithium bromide refrigerator.

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