CN116141075A

CN116141075A - Cooling system

Info

Publication number: CN116141075A
Application number: CN202211625579.1A
Authority: CN
Inventors: 刘帅; 陈小玲; 黄家峰
Original assignee: Gree Electric Appliances Inc of Zhuhai; Zhuhai Gree Intelligent Equipment Co Ltd
Current assignee: Gree Electric Appliances Inc of Zhuhai; Zhuhai Gree Intelligent Equipment Co Ltd
Priority date: 2022-12-16
Filing date: 2022-12-16
Publication date: 2023-05-23

Abstract

The invention provides a cooling system which comprises a thermal circulation loop, a heat exchange loop and a heat exchange assembly, wherein the heat exchange loop is connected with the thermal circulation loop through an evaporator. Because the heat exchange component is added in the prior art, when the external environment temperature is required to be stable, the heat exchange is carried out between the heat exchange component and the hot air blown out by the condensing fan, so that the technical purpose of controlling the external temperature is achieved. At this time, the steam that the condensing fan blown out does not directly exchange heat with the air, can not cause the rising of external environment temperature to solve among the prior art condensing fan heat dissipation and lead to the lathe to receive influence and the technical problem that the machining precision appears the deviation.

Description

Cooling system

Technical Field

The invention relates to the field of machine tool cooling, in particular to a cooling system.

Background

The machine tool has the need of cooling the heating parts, the machine tool is industrially used for cooling, a cooling medium (water, oil and gas) is conveyed to a heating part runner, heat is absorbed and then conveyed to the cooling machine, the machine tool is cooled, and the heat is discharged to the environment by the cooling machine.

The machine tool component has a proper working temperature range, and the cooler can meet the operation requirement of the machine tool through controlling and adjusting the temperature of the cooling medium.

However, the condenser of a general cooling system is usually placed on or beside a machine tool, and the environment of the machine tool is mostly a constant temperature environment, and hot air blown out of the condenser can cause the temperature of the environment of the machine tool to rise, thereby affecting the machining work of the machine tool.

Disclosure of Invention

The invention mainly aims to provide a cooling system to solve the problem that hot air blown out of a condenser of the cooling system in the prior art can influence the machining work of a machine tool.

In order to achieve the above object, according to one aspect of the present invention, there is provided a cooling system comprising: the thermal circulation loop comprises a compressor, an evaporator and a condenser which are sequentially connected; the heat exchange loop is connected with the evaporator so as to enable fluid in the heat exchange loop to exchange heat with refrigerant in the thermal circulation loop, and the heat exchange loop is used for introducing fluid in the machine tool and enabling the fluid to flow through the evaporator and then flow back to the machine tool; and the heat exchange assembly is at least partially arranged opposite to the condensing fan of the condenser so as to exchange heat with hot gas blown out by the condensing fan.

Further, the heat exchange assembly is in communication with the heat exchange circuit such that fluid flowing through the evaporator in the heat exchange circuit enters the heat exchange circuit.

Further, the heat exchange loop comprises a drainage tube body and a tapping tube body, one end of the drainage tube body is used for introducing fluid in the machine tool, the other end of the drainage tube body is connected with an inlet of the evaporator, the tapping tube body is connected with an outlet of the evaporator, so that the fluid in the machine tool introduced by the drainage tube body flows through the evaporator and then enters the tapping tube body, and an outlet of the tapping tube body is used for being communicated to the machine tool; the heat exchange driving pump is arranged on the drainage tube body.

Further, the inflow end of the heat exchange component is communicated with the outflow pipe; and/or the outflow end of the heat exchange assembly is communicated with the drainage tube body.

Further, the heat exchange circuit further comprises: the water tank is arranged on the drainage tube body; wherein, the outflow end of the heat exchange component is communicated with the water tank.

Further, the heat exchange assembly includes: the heat exchanger is arranged on the heat exchange tube body, and the heat exchanger is arranged opposite to a condensing fan of the condenser so as to exchange heat with hot gas blown out by the condensing fan.

Further, the heat exchange assembly further comprises: the cooling box, both ends of heat exchange tube body all are connected with the cooling box to draw liquid to heat exchanger in from the cooling box, and will flow through heat exchanger's liquid and draw back to the cooling box.

Further, the cooling box comprises a liquid inlet cavity and a liquid outlet cavity which are arranged at intervals, one end of the heat exchange tube body is communicated with the liquid outlet cavity, and the other end of the heat exchange tube body is communicated with the liquid inlet cavity; and/or the heat dissipation component is arranged on the cooling box so as to cool the liquid in the cooling box.

Further, the cooling system further includes: the heat exchange on-off control valve is arranged on the heat exchange pipe body; and/or a heat exchange drive pump disposed on the heat exchange tube body.

Further, two ends of the heat exchange tube body are respectively connected with the heat exchange loop, and the two ends of the heat exchange tube body are respectively positioned at the upstream and downstream of the evaporator; and/or the heat exchangers are multiple, and the heat exchangers are sequentially distributed along the direction far away from the condensing fan.

Further, the heat exchange components are multiple, and the multiple heat exchange components are arranged independently; and/or the thermal cycle loop further comprises a filter and a thermal cycle on-off control valve, wherein the filter and the thermal cycle on-off control valve are arranged on a connecting pipeline between the condenser and the evaporator.

By applying the technical scheme of the invention, the cooling system comprises a thermal circulation loop, a heat exchange loop and a heat exchange assembly, wherein the heat exchange loop is connected with the thermal circulation loop through an evaporator. Because the heat exchange component is added in the prior art, when the external environment temperature is required to be stable, the heat exchange is carried out between the heat exchange component and the hot air blown out by the condensing fan, so that the technical purpose of controlling the external temperature is achieved. At this time, the steam that the condensing fan blown out does not directly exchange heat with the air, can not cause the rising of external environment temperature to solve among the prior art condensing fan heat dissipation and lead to the lathe to receive influence and the technical problem that the machining precision appears the deviation.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:

fig. 1 shows a schematic view of the circulation loop structure of an embodiment of the cooling system according to the invention.

Wherein the above figures include the following reference numerals:

1. a compressor; 2. an evaporator; 3. a condenser; 4. a machine tool; 5. a thermal cycle on-off control valve; 6. a heat exchange assembly; 7. a condensing fan; 8. a drainage tube body; 9. a tapping pipe; 10. a heat exchange driving pump; 11. a water tank; 12. a heat exchange tube body; 13. a heat exchanger; 14. a heat exchange on-off control valve; 15. a filter; 20. a thermal circulation loop; 30. and a heat exchange loop.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.

Referring to fig. 1, the present invention provides a cooling system including a thermal circulation loop 20 and a heat exchange loop 30. The thermal cycle circuit 20 includes a compressor 1, an evaporator 2 and a condenser 3 connected in sequence, so that the compressor 1 sucks low-temperature low-pressure refrigerant vapor in the evaporator 2, compresses the low-temperature low-pressure refrigerant vapor into high-temperature high-pressure superheated vapor through the compressor 1, then inputs the superheated vapor into the condenser 3 to dissipate heat and then condenses the superheated vapor into saturated or supercooled refrigerant liquid, then flows into the evaporator 2 to be evaporated and cooled into low-temperature low-pressure refrigerant vapor, and finally returns to the compressor 1 to be ready for entering the next cycle.

In order to exchange heat between the fluid in the heat exchange circuit 30 and the refrigerant in the heat circulation circuit 20, the heat exchange circuit 30 is connected to the evaporator 2 such that the heat exchange circuit 30 and the heat circulation circuit 20 are heat-exchanged via the evaporator 2. The heat exchange circuit 30 is used for introducing fluid in the machine tool 4 and enabling the fluid to flow back to the machine tool after flowing through the evaporator 2, so that the machine tool 4 is cooled, and the machine tool 4 can work normally.

In order to reduce the influence on the machine tool 4 when the condenser 3 performs heat radiation operation when the machine tool 4 has a requirement on the temperature of the external working environment, the cooling system further comprises a heat exchange assembly 6. At least part of the heat exchange component 6 is arranged opposite to the condensing fan 7 of the condenser 3 so as to exchange heat with hot air blown out by the condensing fan 7, thereby achieving the purpose of controlling the temperature of the external working environment of the machine tool 4.

The cooling system in the present invention includes a heat circulation circuit 20, a heat exchange circuit 30, and a heat exchange assembly 6, the heat exchange circuit 30 and the heat circulation circuit 20 being connected through an evaporator 2. Because the heat exchange component 6 is added in the prior art, when the external environment temperature is required to be stable, the heat exchange is carried out between the heat exchange component 6 and the hot air blown out by the condensing fan 7, so that the technical purpose of controlling the external temperature is achieved. At this time, the hot gas blown out by the condensing fan 7 does not directly exchange heat with air, and the temperature of the external environment is not increased, so that the technical problem that the machine tool 4 is affected and the machining precision is deviated due to heat dissipation of the condensing fan 7 in the prior art is solved.

Further, in order to return the heat-exchanged high-temperature water to the evaporator 2 again for evaporation refrigeration, the heat exchange assembly 6 is communicated with the heat exchange circuit 30 to enable the fluid in the heat exchange circuit 30 after flowing through the evaporator 2 to enter the heat exchange circuit 30 in preparation for the next heat exchange cycle.

The specific structure of the heat exchange circuit 30 in this embodiment is that the heat exchange circuit 30 includes: the machine tool comprises a drainage tube body 8 and a tapping tube body 9, wherein one end of the drainage tube body 8 is used for introducing fluid in the machine tool 4, and the other end of the drainage tube body 8 is connected with an inlet of the evaporator 2, so that the fluid needing refrigeration in the machine tool 4 enters the evaporator 2 through the drainage tube body 8 to carry out evaporation refrigeration. The outlet pipe body 9 is connected with the outlet of the evaporator 2, so that fluid in the machine tool introduced by the drainage pipe body 8 flows through the evaporator 2 and then enters the outlet pipe body 9, the outlet of the outlet pipe body 9 is used for being communicated to the machine tool 4, and the fluid subjected to evaporation refrigeration by the evaporator 2 returns to the machine tool 4 again through the outlet pipe body 9, so that the purpose of cooling the machine tool 4 is achieved.

In order to make the fluid to be cooled smoothly flow into the draft tube body 8 from the machine tool 4 and finally return to the machine tool 4 for circulation heat exchange, the heat exchange loop 30 should also include a heat exchange driving pump 10, the heat exchange driving pump 10 is arranged on the draft tube body 8, and when the fluid in the machine tool 4 needs to be evaporated and cooled, the heat exchange driving pump 10 is started to make the fluid in the machine tool 4 flow into the draft tube body 8.

Specifically, the heat exchange assembly 6 in this embodiment has the following specific implementation forms:

first implementation form: in order to enable the fluid after heat exchange of the heat exchange assembly 6 to return to the evaporator 2 again for evaporation refrigeration, the inflow end of the heat exchange assembly 6 is communicated with the outflow pipe 9, and the implementation mode is that the fluid after heat exchange of the heat exchange assembly 6 enters the machine tool 4 first and then returns to the evaporator 2.

The second implementation form: as shown in fig. 1, in order to make the fluid after heat exchange of the heat exchange assembly 6 return to the evaporator 2 again for evaporation refrigeration, the outflow end of the heat exchange assembly 6 is communicated with the drainage tube body 8, and the implementation form is that the fluid after heat exchange of the heat exchange assembly 6 directly enters the water tank 11 and returns to the evaporator 2.

Third implementation form: in order to enable the fluid after heat exchange of the heat exchange assembly 6 to return to the evaporator 2 again for evaporation refrigeration, the outflow end of the heat exchange assembly 6 is communicated with both the drainage pipe body 8 and the outflow pipe body 9, and the implementation form enables the fluid after heat exchange of the heat exchange assembly 6 to be firstly in the machine tool 4 or the water tank 11 in two ways and then to return to the evaporator 2.

Further, in order to perform evaporation refrigeration on the liquid in the water tank 11, the heat exchange circuit 30 further includes the water tank 11. The water tank 11 is provided on the draft tube body 8, and in the above-described second and third implementation forms, the outflow end of the heat exchange assembly 6 communicates with the water tank 11.

Specifically, the heat exchange assembly 6 in the present embodiment has a specific structure in which the heat exchange assembly 6 includes a heat exchange tube body 12 and a heat exchanger 13. Wherein the heat exchanger 13 is provided on the heat exchange tube body 12. In order to exchange heat between the refrigerant liquid in the heat exchanger 13 and the heat in the condenser 3 blown out by the condensing fan 7, the heat exchanger 13 needs to be arranged opposite to the condensing fan 7 of the condenser 3 to exchange heat with the hot gas blown out by the condensing fan 7, so as to achieve the purpose of cooling the hot gas blown out by the condensing fan 7, thereby controlling the temperature of the external environment of the machine tool 4.

Further, in order to make the liquid flowing into the heat exchanger 13 meet the requirement of heat exchange and cooling of the hot gas blown out by the condensing fan 7, the heat exchange assembly 6 further comprises a cooling tank. Both ends of the heat exchange tube body 12 are connected to a cooling tank to draw liquid from the cooling tank into the heat exchanger 13 and to introduce the liquid flowing through the heat exchanger 13 back to the cooling tank so as to cool the liquid flowing into and out of the heat exchanger 13.

In order to achieve the purpose of cooling the liquid flowing into and out of the heat exchanger 13, the specific structure of the cooling tank in this embodiment is:

one embodiment is that the cooling box comprises a liquid inlet cavity and a liquid outlet cavity which are arranged at intervals, one end of the heat exchange tube body 12 is communicated with the liquid outlet cavity, the other end of the heat exchange tube body 12 is communicated with the liquid inlet cavity, the arrangement is that liquid which is output from the cooling box is cooled, and liquid which is input into the cooling box is liquid which is subjected to heat exchange by the heat exchanger 13.

In another embodiment, a heat dissipation component is additionally installed on the cooling box to cool the liquid in the cooling box, so that the liquid input into the cooling box can be cooled through the heat dissipation component.

Also, the two embodiments may be combined together, so that the cooling tank has a more remarkable effect of cooling the liquid flowing into and out of the heat exchanger 13.

In addition, the cooling system further includes a heat exchange on-off control valve 14 and a heat exchange driving pump. By providing both the heat exchange on-off control valve 14 and the heat exchange drive pump on the heat exchange tube body 12, it is controlled whether or not the heat exchange assembly 6 is activated. When it is necessary to activate the heat exchange unit 6, the heat exchange on-off control valve 14 is opened and the heat exchange drive pump is activated so that the refrigerator output from the evaporator 2 enters the heat exchanger 13 through the heat exchange tube body 12.

In order to allow the refrigerant liquid after the evaporation refrigeration in the evaporator 2 to enter the heat exchange assembly 6, both ends of the heat exchange tube body 12 are connected to the heat exchange circuit 30, respectively, and both ends of the heat exchange tube body 12 are located upstream and downstream of the evaporator 2, respectively, so that the refrigerant liquid entering the heat exchange assembly 6 is circulated. Meanwhile, a plurality of heat exchangers 13 can be arranged, and the heat exchangers 13 are sequentially distributed along the direction away from the condensing fan 7, so that the purpose of completely exchanging heat and reducing temperature of heat blown out by the condensing fan 7 is achieved, and the temperature of the external environment of the machine tool 4 is controlled.

Specifically, a plurality of heat exchange assemblies 6 can be arranged, and the plurality of heat exchange assemblies 6 are mutually independent, so that the purpose of completely exchanging heat and cooling heat blown by the condensing fan 7 is achieved, and the temperature of the external environment of the machine tool 4 is controlled. In order to filter the liquid condensed by the condenser 3, the thermal circulation circuit 20 further includes a filter 15, and the filter 15 is provided on a connection line between the condenser 3 and the evaporator 2.

In addition, in order to control whether to start the thermal cycle circuit 20, the thermal cycle circuit 20 further includes a thermal cycle on-off control valve 5, the thermal cycle on-off control valve 5 being provided on a connection pipe between the condenser 3 and the evaporator 2, and when the thermal cycle circuit 20 needs to be started, the thermal cycle on-off control valve 5 needs to be opened.

In the using process of the cooling system provided by the invention, the following conditions may be met:

1) The machine tool 4 needs to work under the condition that external environment has stable temperature, and the condensing fan 7 in the cooling system can blow the heat that the condenser 3 produced in the condensation process to the air for the ambient temperature that the machine tool 4 is in rises gradually, thereby influences the machine tool 4 and carries out normal work, and at this moment, needs to start the heat exchange subassembly 6 and carries out heat transfer cooling to the steam that condensing fan 7 blown out, and specific operation steps are: the on-off control valve 14 is opened and the heat exchange driving pump is started, so that the refrigerant liquid output from the evaporator 2 enters the heat exchanger 13 through the heat exchange pipe body 12, exchanges heat with the hot gas blown out by the condensing fan 7 in the heat exchanger 13, and then enters the evaporator 2 through the heat exchange pipe body 12 for evaporation refrigeration to prepare for the next cycle.

2) The machine tool 4 has no high or no requirement on the external environment temperature, and at this time, the heat exchange assembly 6 does not need to be started, and the specific operation steps are as follows: the heat exchange on-off control valve 14 and the heat exchange driving pump are closed, so that the hot air blown out by the condensing fan 7 is directly discharged to the external environment.

From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

according to the cooling system provided by the invention, the heat exchange component 6 is additionally arranged, when the machine tool 4 needs to work under the condition that the external environment has stable temperature, only the heat exchange component 6 is required to be started, so that the refrigerant liquid output from the evaporator 2 exchanges heat with the hot air blown out by the condensing fan 7 through the heat exchange component 6, the purpose of controlling the external environment temperature is achieved, the problem that the hot air blown out by the condenser 3 of the cooling system in the prior art can influence the processing work of the machine tool 4 is solved, the service life of the machine tool 4 is prolonged, the waste of energy sources is reduced, the working cost is reduced, and the working efficiency is improved.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A cooling system, comprising:

the thermal circulation loop (20), wherein the thermal circulation loop (20) comprises a compressor (1), an evaporator (2) and a condenser (3) which are connected in sequence;

a heat exchange circuit (30), wherein the heat exchange circuit (30) is connected with the evaporator (2) so as to enable fluid in the heat exchange circuit (30) to exchange heat with refrigerant in the thermal circulation circuit (20), and the heat exchange circuit (30) is used for introducing fluid in a machine tool (4) and enabling the fluid to flow through the evaporator (2) and then flow back to the machine tool;

and the heat exchange assembly (6) is arranged opposite to the condensing fan (7) of the condenser (3) at least partially so as to exchange heat with hot gas blown out by the condensing fan (7).

2. A cooling system according to claim 1, characterized in that the heat exchange assembly (6) communicates with the heat exchange circuit (30) such that fluid flowing through the evaporator (2) in the heat exchange circuit (30) enters the heat exchange circuit (30).

3. The cooling system of claim 1, wherein the cooling system comprises a cooling system,

the heat exchange loop (30) comprises a drainage tube body (8) and a tapping tube body (9), one end of the drainage tube body (8) is used for introducing fluid in a machine tool, the other end of the drainage tube body (8) is connected with an inlet of the evaporator (2), the tapping tube body (9) is connected with an outlet of the evaporator (2), so that the fluid in the machine tool introduced by the drainage tube body (8) flows through the evaporator (2) and then enters the tapping tube body (9), and an outlet of the tapping tube body (9) is used for being communicated to the machine tool;

the heat exchange driving pump (10), the heat exchange driving pump (10) is arranged on the drainage tube body (8).

4. A cooling system according to claim 3, wherein,

the inflow end of the heat exchange assembly (6) is communicated with the outflow pipe body (9); and/or

The outflow end of the heat exchange assembly (6) is communicated with the drainage tube body (8).

5. A cooling system according to claim 3, wherein the heat exchange circuit (30) further comprises:

the water tank (11) is arranged on the drainage tube body (8);

wherein the outflow end of the heat exchange assembly (6) is communicated with the water tank (11).

6. The cooling system according to any one of claims 1 to 5, characterized in that the heat exchange assembly (6) comprises:

the heat exchange device comprises a heat exchange tube body (12) and a heat exchanger (13), wherein the heat exchanger (13) is arranged on the heat exchange tube body (12), and the heat exchanger (13) is arranged opposite to a condensing fan (7) of the condenser (3) so as to exchange heat with hot gas blown out by the condensing fan (7).

7. The cooling system according to claim 6, wherein the heat exchange assembly (6) further comprises:

the cooling box, both ends of heat exchange tube body (12) all with the cooling box is connected, in order follow draw liquid in the cooling box extremely in heat exchanger (13), and will flow through heat exchanger (13) liquid return to the cooling box.

8. The cooling system of claim 7, wherein the cooling system comprises a cooling system,

the cooling box comprises a liquid inlet cavity and a liquid outlet cavity which are arranged at intervals, one end of the heat exchange tube body (12) is communicated with the liquid outlet cavity, and the other end of the heat exchange tube body (12) is communicated with the liquid inlet cavity; and/or

The heat dissipation assembly is installed on the cooling box and used for cooling liquid in the cooling box.

9. The cooling system of claim 6, wherein the cooling system further comprises:

a heat exchange on-off control valve (14), the heat exchange on-off control valve (14) being provided on the heat exchange tube body (12); and/or

And a heat exchange drive pump provided on the heat exchange tube body (12).

10. The cooling system of claim 6, wherein the cooling system comprises a cooling system,

two ends of the heat exchange tube body (12) are respectively connected with the heat exchange loop (30), and two ends of the heat exchange tube body (12) are respectively positioned at the upstream and downstream of the evaporator (2); and/or

The heat exchangers (13) are multiple, and the heat exchangers (13) are sequentially distributed along the direction away from the condensing fan (7).

11. The cooling system according to any one of claims 1 to 5, wherein,

the number of the heat exchange assemblies (6) is plural, and the heat exchange assemblies (6) are arranged independently; and/or

The thermal circulation loop (20) further comprises a filter (15) and a thermal circulation on-off control valve (5), and the filter (15) and the thermal circulation on-off control valve (5) are arranged on a connecting pipeline between the condenser (3) and the evaporator (2).