阅读说明：本技术 调节用冷设备温度的双循环冷却系统、控制方法 (Dual-cycle cooling system for adjusting temperature of cold equipment and control method ) 是由 梁钧 胡加兴 于 2020-06-05 设计创作，主要内容包括：本申请公开了一种调节用冷设备温度的双循环冷却系统、控制方法,双循环冷却系统包括与用冷设备连通成冷媒回路的制冷压缩机和冷媒分配装置,其中冷媒由制冷压缩机输出后经由冷媒分配装置流向用冷设备,再由用冷设备返回制冷压缩机；冷媒分配装置包括：冷媒储罐,冷媒罐配置有流出管以及与制冷压缩机连通的流入管,流出管配置有第一控制阀；冷媒泵,冷媒泵具有相对的进口和出口,其中流出管接入进口,出口连通至用冷设备；连接管,连接管的一端与流入管并联接入制冷压缩机,另一端通至用冷设备,连接管配置有第二控制阀,该方案相对于现有技术,双循环冷却系统根据用冷设备的环境温度采用不同的循环方式,以节省功耗,延长整个冷却系统的寿命。(The application discloses a dual-cycle cooling system for adjusting the temperature of cold equipment and a control method, wherein the dual-cycle cooling system comprises a refrigeration compressor and a refrigerant distribution device, wherein the refrigeration compressor and the cold equipment are communicated to form a refrigerant loop; the refrigerant distribution device includes: the refrigerant storage tank is provided with an outflow pipe and an inflow pipe communicated with the refrigeration compressor, and the outflow pipe is provided with a first control valve; the refrigerant pump is provided with an inlet and an outlet which are opposite, wherein the outflow pipe is connected to the inlet, and the outlet is communicated to the cooling equipment; the one end of connecting pipe and inflow pipe parallel connection access compressor, the other end lead to with cold charge, and the connecting pipe disposes the second control valve, and this scheme is for prior art, and two circulative cooling system adopt different circulation modes according to with the ambient temperature of cold charge to save the consumption, prolong whole cooling system's life-span.)

1. The dual-cycle cooling system for adjusting the temperature of the cold equipment is characterized by comprising a refrigeration compressor and a refrigerant distribution device, wherein the refrigeration compressor is communicated with the cold equipment to form a refrigerant loop, and the refrigerant flows to the cold equipment through the refrigerant distribution device after being output by the refrigeration compressor and then returns to the refrigeration compressor through the cold equipment;

the refrigerant distribution device includes:

a refrigerant tank provided with an outflow pipe and an inflow pipe communicated with a refrigeration compressor, the outflow pipe being provided with a first control valve;

the refrigerant pump is provided with an inlet and an outlet which are opposite, wherein the outflow pipe is connected into the inlet, and the outlet is communicated to the cooling equipment;

and one end of the connecting pipe is connected with the inflow pipe in parallel to be connected into the refrigeration compressor, the other end of the connecting pipe is communicated with the cold-using equipment, and the connecting pipe is provided with a second control valve.

2. The dual cycle cooling system of claim 1, wherein the outflow pipe and the inflow pipe are both inserted into the refrigerant storage tank at a bottom of the refrigerant storage tank.

3. The dual cycle cooling system of claim 1, wherein the coolant reservoir has a long axis, and the outflow pipe and the inflow pipe are sequentially arranged along the long axis in the coolant reservoir.

4. The dual cycle cooling system of claim 1, wherein the outlet port is joined to the connecting tube via a one-way valve and communicates to a cooling utility.

5. The dual cycle cooling system of claim 1, wherein the coolant pump comprises a housing and a motor cavity assembly disposed in the housing, wherein a first cavity and a second cavity are disposed on two sides of the motor cavity assembly in an axial direction of the housing, respectively, and the housing is provided with the inlet communicated with the first cavity and the outlet communicated with the second cavity;

the motor cavity assembly comprises two supporting plates which are oppositely arranged, a driving device arranged between the two supporting plates and a gear box positioned in the first cavity, wherein the driving device is provided with an output shaft, and one end of the output shaft is linked with the gear box;

the inner wall of casing is provided with two steps along the casing axial, two steps are located between two backup pads, and respectively with two backup pads one-to-one cooperation for keep the relative position of motor chamber subassembly in the casing, be connected with between two backup pads and make up two backup pads relatively closely in order to support the fastening pull rod of corresponding step.

6. The dual cycle cooling system of claim 5, wherein the two support plates are a first support plate and a second support plate, respectively, and the two steps are a first step and a second step, respectively, the first support plate cooperating with the first step and the second support plate cooperating with the second step;

the shell comprises a cylinder body, a first cover shell and a second cover shell, wherein the first cover shell and the second cover shell are respectively fixed at two ends of the cylinder body in a sealing manner;

the two steps are arranged on the inner wall of the cylinder body;

the inlet is arranged on the first housing, the outlet is arranged on the second housing, or the inlet and the outlet are both arranged on the cylinder;

the first housing, the cylinder and the first supporting plate enclose the first cavity;

the second housing, the barrel and the second support plate enclose the second cavity, a junction box is arranged on the outer side wall of the second housing, and a wiring terminal connected with the driving device is arranged in the junction box.

7. The dual cycle cooling system of claim 5, wherein the step has a height of 1mm to 3mm in a radial direction of the cylinder.

8. The dual cycle cooling system of claim 5, wherein the coolant pump further comprises one or more support spokes, each support spoke being disposed between two support plates along a circumference of the housing for maintaining a spacing between the two support plates.

9. The control method of the dual cycle cooling system according to any one of claims 1 to 8, characterized by comprising:

detecting the ambient temperature;

when the ambient temperature reaches a first preset value, starting the first control valve and the refrigerant pump, closing the second control valve and the refrigeration compressor, conveying the refrigerant to a cooling device from the refrigerant storage tank through the refrigerant pump, and returning the refrigerant to the refrigerant storage tank from the cooling device;

and when the ambient temperature reaches a second preset value, starting the second control valve and the refrigeration compressor, closing the first control valve and the refrigerant pump, and conveying the refrigerant to the cold utilization equipment through the connection pipe by the refrigeration compressor and then returning the refrigerant to the refrigeration compressor by the cold utilization equipment.

10. The dual cycle cooling system based control method of claim 9, wherein the ambient temperature is an ambient temperature of the cooling equipment or an ambient temperature of the refrigerant storage tank.

Technical Field

The application relates to the field of refrigeration, in particular to a double-circulation cooling system for adjusting the temperature of cold equipment and a control method.

Background

When the existing cooling system cools the cooling equipment, the refrigerant is cooled by the compressor and then input into the liquid storage tank, and then the pump conveys the refrigerant in the liquid storage tank to the heat exchange pipeline of the cooling equipment and then returns to the compressor by the cooling equipment. Part of the cold-using equipment can be in an uninterrupted operation state, so that the cooling system can continuously cool the cold-using equipment, and the energy consumption of the cooling system is larger at the moment.

However, when the external environment temperature of the cooling device is low, the compressor is prone to have a problem of insufficient liquid supply due to too low condensing pressure, and the heat load of the cooling device is low at this time, which also causes frequent start and stop of the compressor, and this situation not only causes large energy consumption of the cooling system, but also shortens the service life of the whole cooling system.

Disclosure of Invention

The application provides a pair of circulative cooling system of cold charge equipment temperature is used in regulation for solve the technical problem that cooling system consumption is big among the prior art, life shortens.

The application provides a dual-cycle cooling system for adjusting the temperature of cold equipment, which comprises a refrigeration compressor and a refrigerant distribution device, wherein the refrigeration compressor is communicated with the cold equipment to form a refrigerant loop, and a refrigerant flows to the cold equipment through the refrigerant distribution device after being output by the refrigeration compressor and then returns to the refrigeration compressor through the cold equipment;

the refrigerant distribution device includes:

a refrigerant tank provided with an outflow pipe and an inflow pipe communicated with a refrigeration compressor, the outflow pipe being provided with a first control valve;

the refrigerant pump is provided with an inlet and an outlet which are opposite, wherein the outflow pipe is connected into the inlet, and the outlet is communicated to the cooling equipment;

and one end of the connecting pipe is connected with the inflow pipe in parallel to be connected into the refrigeration compressor, the other end of the connecting pipe is communicated with the cold-using equipment, and the connecting pipe is provided with a second control valve.

Several alternatives are provided below, but not as an additional limitation to the above general solution, but merely as a further addition or preference, each alternative being combinable individually for the above general solution or among several alternatives without technical or logical contradictions.

Optionally, the outflow pipe and the inflow pipe are both inserted into the refrigerant storage tank from the bottom of the refrigerant storage tank.

Optionally, the refrigerant storage tank has a long axis, and the outflow pipe and the inflow pipe are sequentially arranged in the refrigerant storage tank along the long axis.

Optionally, the outlet is connected to the connecting pipe via a check valve and then communicated to the cooling device.

Optionally, the refrigerant pump includes a housing and a motor cavity assembly disposed in the housing, a first cavity and a second cavity are respectively disposed on two sides of the motor cavity assembly in an axial direction of the housing, and the housing is provided with the inlet communicated with the first cavity and the outlet communicated with the second cavity;

the motor cavity assembly comprises two supporting plates which are oppositely arranged, a driving device arranged between the two supporting plates and a gear box positioned in the first cavity, wherein the driving device is provided with an output shaft, and one end of the output shaft is linked with the gear box;

the inner wall of casing is provided with two steps along the casing axial, two steps are located between two backup pads, and respectively with two backup pads one-to-one cooperation for keep the relative position of motor chamber subassembly in the casing, be connected with between two backup pads and make up two backup pads relatively closely in order to support the fastening pull rod of corresponding step.

Optionally, the two support plates are a first support plate and a second support plate respectively, the two steps are a first step and a second step respectively, the first support plate is matched with the first step, and the second support plate is matched with the second step;

the shell comprises a cylinder body, a first cover shell and a second cover shell, wherein the first cover shell and the second cover shell are respectively fixed at two ends of the cylinder body in a sealing manner;

the two steps are arranged on the inner wall of the cylinder body;

the inlet is arranged on the first housing, the outlet is arranged on the second housing, or the inlet and the outlet are both arranged on the cylinder;

the first housing, the cylinder and the first supporting plate enclose the first cavity;

the second housing, the barrel and the second support plate enclose the second cavity, a junction box is arranged on the outer side wall of the second housing, and a wiring terminal connected with the driving device is arranged in the junction box.

Optionally, the height of the step is 1mm to 3mm along the radial direction of the cylinder.

Optionally, the refrigerant pump further includes one or more supporting spokes, and each supporting spoke is disposed between the two supporting plates along the circumferential direction of the housing to maintain a distance between the two supporting plates.

The utility model provides a cooling system of cold equipment temperature is used in regulation, cooling system adopt different circulation modes according to the ambient temperature with cold equipment to save the consumption, prolong whole cooling system's life-span.

The application also provides the following technical scheme:

a control method based on the above-described dual cycle cooling system, the control method comprising:

detecting the ambient temperature;

when the ambient temperature reaches a first preset value, starting the first control valve and the refrigerant pump, closing the second control valve and the refrigeration compressor, conveying the refrigerant to a cooling device from the refrigerant storage tank through the refrigerant pump, and returning the refrigerant to the refrigerant storage tank from the cooling device;

and when the ambient temperature reaches a second preset value, starting the second control valve and the refrigeration compressor, closing the first control valve and the refrigerant pump, and conveying the refrigerant to the cold utilization equipment through the connection pipe by the refrigeration compressor and then returning the refrigerant to the refrigeration compressor by the cold utilization equipment.

Optionally, the ambient temperature is the ambient temperature of the cooling device or the ambient temperature of the refrigerant storage tank.

According to the control method based on the double-circulation cooling system, the cooling system is controlled to adopt different circulation modes according to the ambient temperature of the cooling equipment, so that the power consumption is saved, and the service life of the whole cooling system is prolonged.

Drawings

FIG. 1 is a schematic diagram of a dual cycle cooling system according to an embodiment of the present disclosure;

FIG. 2 is a schematic structural diagram of the refrigerant distribution device in FIG. 1;

FIG. 3 is a schematic diagram of the coolant pump of FIG. 2;

FIG. 4 is a schematic diagram of the coolant pump of FIG. 2;

FIG. 5 is an enlarged view of the portion A of FIG. 4;

FIG. 6 is an enlarged view of the portion B of FIG. 4;

FIG. 7 is a block diagram of a dual cycle cooling system control method.

The reference numerals in the figures are illustrated as follows:

100. a dual cycle cooling system; 10. cooling equipment is used; 20. a refrigeration compressor;

30. a refrigerant distribution device; 31. a refrigerant storage tank; 311. an outflow tube; 312. an inflow pipe; 313. a first control valve; 314. a safety valve; 315. a liquid viewing mirror; 32. a connecting pipe; 321. a second control valve; 33. a one-way valve;

40. a refrigerant pump;

50. a housing; 51. a first cavity; 52. a second cavity; 53. an inlet; 54. an outlet; 55. a step; 551. a first step; 552. a second step; 56. a barrel; 57. a first housing; 58. a second housing; 59. a junction box; 591. a wiring terminal;

60. a motor cavity assembly; 61. a support plate; 611. a first support plate; 612. a second support plate; 613. an extension portion; 614. a baffle plate; 615. an end plate; 62. a gear case; 621. a gear pair; 622. an end cap; 623. fixing a sleeve; 624. a liquid inlet; 625. a liquid outlet; 63. fastening the pull rod; 64. a seal ring; 65. supporting spokes; 66. a drive device; 661. an output shaft; 664. a stator; 665. a rotor;

70. a base.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In one embodiment, as shown in fig. 1 and 2, a dual cycle cooling system 100 for adjusting the temperature of a cooling device 10 includes a refrigeration compressor 20 and a refrigerant distribution device 30, which are connected to the cooling device 10 to form a refrigerant loop, wherein a refrigerant is output from the refrigeration compressor 20, flows to the cooling device 10 through the refrigerant distribution device 30, and then returns to the refrigeration compressor 20 through the cooling device 10;

the refrigerant distribution device 30 includes a refrigerant tank 31, a refrigerant pump 40, and a connection pipe 32, the refrigerant tank is provided with an outflow pipe 311 and an inflow pipe 312 communicated with the refrigeration compressor 20, the outflow pipe 311 is provided with a first control valve 313; the refrigerant pump 40 is provided with an inlet 53 and an outlet 54 which are opposite, wherein the outflow pipe 311 is connected into the inlet 53, and the outlet 54 is communicated with the cooling device 10; one end of the connection pipe 32 is connected to the refrigerant compressor 20 in parallel with the inflow pipe 312, and the other end is connected to the cooling equipment 10, and the second control valve 321 is disposed in the connection pipe 32.

The dual circulation cooling system 100 circulates according to the ambient temperature of the cooling equipment 10 or the refrigerant storage tank 31 by the following method:

first, when the ambient temperature reaches the first preset value, the first control valve 313 and the refrigerant pump 40 are turned on, the second control valve 321 and the refrigeration compressor 20 are turned off, and the refrigerant is delivered from the refrigerant storage tank 31 to the cooling device 10 through the refrigerant pump 40, and then returned to the refrigerant storage tank 31 from the cooling device 10.

Secondly, when the ambient temperature reaches the second preset value, the second control valve 321 and the refrigeration compressor 20 are started, the first control valve 313 and the refrigerant pump 40 are closed, and the refrigerant is delivered to the cooling device 10 from the refrigeration compressor 20 through the connecting pipe 32, and then returns to the refrigeration compressor 20 from the cooling device 10.

The dual circulation cooling system 100 adopts different circulation modes according to the ambient temperature of the cooling device 10, so as to save power consumption and prolong the service life of the whole cooling system.

In this embodiment, the first preset value is less than 10 ℃ and the second preset value is greater than 10 ℃. Of course, in other embodiments, the first preset value and the second preset value are adjusted according to the required working temperature of the cooling device 10, and will not be further described herein.

Further, the refrigerant tank 31 is provided with a relief valve 314, and the relief valve 314 controls the pressure in the refrigerant tank 31.

Further, the refrigerant storage tank 31 is further provided with a plurality of liquid observation mirrors 315 arranged along the vertical direction, and the liquid observation mirrors 315 are used for observing the liquid level in the refrigerant storage tank 31.

In another embodiment, in order to make the structure of the refrigerant storage tank 31 more compact, both the outflow pipe 311 and the inflow pipe 312 are inserted into the refrigerant storage tank 31 from the bottom of the refrigerant storage tank 31.

When impurities exist in the refrigerant, the impurities are deposited at the bottom of the refrigerant storage tank 31, in order to avoid the impurities from entering the pipeline, a certain distance (50 mm-150 mm) is reserved between an inlet 53 of the outflow pipe 311, which is located in the refrigerant storage tank 31, and the bottom of the refrigerant storage tank 31, so that the impurities in the refrigerant storage tank 31 can be prevented from entering the pipeline.

In another embodiment, to further make the refrigerant distribution device 30 compact, the refrigerant storage tank 31 has a long axis, and the outflow pipe 311 and the inflow pipe 312 are sequentially arranged along the long axis in the refrigerant storage tank 31.

The refrigerant receiver 31 is shown in the X direction in fig. 2.

The refrigerant reservoir 31 and the refrigerant pump 40 may be installed in a spatially opposite manner. Of course, the installation positions of the refrigerant accumulator 31 and the refrigerant pump 40 may be adjusted according to actual needs.

In another embodiment, the outlet 54 is connected to the connecting tube 32 and to the cooling device 10 via a check valve 33.

The check valve 33 prevents the refrigerant in the connection pipe 32 from flowing back into the refrigerant pump 40 when the refrigerant enters the cooling device 10 through the connection pipe 32.

In another embodiment, in order to further make the refrigerant distribution device 30 more compact, the dual-cycle cooling system 100 further includes an integrated component for installing the first control valve 313 and the second control valve 321.

The integrated component may be a board or a box.

As shown in fig. 3 to 6, a refrigerant pump 40 is applied to the dual cycle cooling system 100.

In another embodiment, the refrigerant pump 40 includes a housing 50 and a motor cavity assembly 60 disposed in the housing 50, in the axial direction of the housing, a first cavity 51 and a second cavity 52 are respectively disposed at two sides of the motor cavity assembly 60, the housing 50 is provided with an inlet 53 communicated with the first cavity 51 and an outlet 54 communicated with the second cavity 52;

the motor cavity assembly 60 comprises two support plates 61 arranged oppositely, a driving device 66 arranged between the two support plates 61 and a gear box 62 arranged in the first cavity 51, wherein an output shaft 661 is arranged in the driving device 66, and one end of the output shaft 661 is linked with the gear box 62;

the inner wall of casing 50 is provided with two steps 55 along the casing axial, and two steps 55 are located between two backup pads 61, and respectively with two backup pads 61 one-to-one cooperation for keep the relative position of motor chamber subassembly 60 in casing 50, be connected with between two backup pads 61 with two backup pads 61 relatively close in order to support the fastening pull rod 63 of corresponding step 55.

The two support plates 61 are a first support plate 611 and a second support plate 612, the two steps 55 are a first step 551 and a second step 552, the first support plate 611 is matched with the first step 551, and the second support plate 612 is matched with the second step 552.

When the motor chamber assembly 60 is installed in the housing 50, the first support plate 611 abuts against the first step 551 to pre-install the first support plate 611 in the housing 50, the gear case 62, the output shaft 661, and the second support plate 612 are installed in the housing 50 in sequence, and then the position between the first support plate 611 and the second support plate 612 is defined by the fastening pull rod 63 to prevent the motor chamber assembly 60 from moving in the housing 50.

Step 55 not only maintains the relative position of motor chamber assembly 60 within housing 50, but also serves to locate motor chamber assembly 60 when installed.

Of course, the second support plate 612 and the second step 552 may be abutted first, and then the gear box 62, the output shaft 661 and the first support plate 611 may be sequentially installed in the housing 50.

In another embodiment, one of the two support plates 61 is provided with a through hole, the other is provided with a threaded hole, and the fastening pull rod 63 passes through the through hole and is in threaded connection with the threaded hole.

In this embodiment, the first support plate 611 has a screw hole, and the second support plate 612 has a through hole. When the motor cavity assembly 60 is installed in the housing 50, the fastening pull rod 63 penetrates through the through hole and is connected with the threaded hole, and the fastening pull rod 63 is screwed so that the two support plates 61 respectively abut against the two corresponding steps 55 one by one.

In another embodiment, the second supporting plate 612 comprises a baffle 614 and an end plate 615, the baffle 614 is matched with the second step 552, and the end plate 615 is installed on one side of the baffle 614 facing the driving device 66;

the end plate 615 is provided with a through hole or a threaded hole.

In another embodiment, the housing 50 includes a cylinder 56, and a first cover 57 and a second cover 58 hermetically fixed to two ends of the cylinder 56, respectively, where the first cover 57 and the second cover 58 are fixed to the cylinder 56 by welding or screwing;

two steps 55 are provided on the inner wall of the cylinder 56;

the inlet 53 is arranged on the first housing 57, the outlet 54 is arranged on the second housing 58, or the inlet 53 and the outlet 54 are both arranged on the cylinder 56;

the first cover 57, the cylinder 56 and the first support plate 611 form a first cavity 51;

second housing 58, cylinder 56, and second support plate 612 enclose second cavity 52.

The outer side wall of the second housing 58 is provided with a terminal block 59, and a terminal block 591 connected with the driving device 66 is provided in the terminal block 59. The output end of the connection terminal 591 is connected with the driving device 66 through a lead, and the input end is connected with a power generation device (not shown) through a lead, wherein the power generation device is a generator. The coolant pump 40 may operate using a generator as a power source.

Wherein the cylinder 56 has an axis with which the housing axis coincides.

In another embodiment, the gear box 62 includes an end cover 622, a fixing sleeve 623, and a gear pair 621, the fixing sleeve 623 is disposed between the first support plate 611 and the end cover 622, the fixing sleeve 623, and the gear pair 621 cooperate to define the gear box 62, the gear pair 621 is located in the gear box 62, and the fixing sleeve 623 and the end cover 622 are fixed on the first support plate 611 by a positioning pin or a screw.

The end cover 622 is provided with a liquid inlet 624 for communicating the first cavity 51 with the gear case 62, the support plate 61 is provided with a liquid outlet 625 for communicating the second cavity 52 with the gear case 62, the end of the output shaft 661 penetrates the first support plate 611 to be connected with the gear pair 621, when the rotor 665 rotates, the output shaft 661 can drive the gear pair 621 to rotate, so that the refrigerant is introduced from the liquid inlet 624 of the end cover 622, and is led out from the liquid outlet 625 of the first support plate 611 to enter the second cavity 52, and finally the refrigerant is introduced into the outlet 54 from the second cavity 52 and is discharged from the outlet 54, thereby completing a pressurizing process of the pump.

In another embodiment, the drive assembly includes a stator 664 and a rotor 665, and an output shaft 661 extending through an axial center of rotor 665.

The stator 664 is fixed in the cylinder 56, and the rotor 665 is attached to the output shaft 661 and engaged with the stator 664.

In another embodiment, the output shaft 661 and the gear pair 621 are connected by a key in order to secure the connection between the output shaft 661 and the gear pair 621.

In another embodiment, the height of the step 55 is 1mm to 3mm in the radial direction of the cylinder 56.

The height of the step 55 is too low, which causes the support plate 61 to cross the step 55 when the acting force of the fastening pull rod 63 acts on the two support plates 61; the height of the step 55 is too high, which causes a waste of material during processing of the step 55.

Preferably, the height of the step 55 is 2mm in the radial direction of the cylinder 56.

In another embodiment, the refrigerant pump 40 further includes a sealing ring 64 for isolating the first cavity 51 from the second cavity 52, wherein the sealing ring 64 is disposed in a radial gap between the first supporting plate 611 and the cylinder 56;

and/or the sealing ring 64 is arranged in the axial gap between the first support plate 611 and the first step 551.

In another embodiment, the side wall of the first support plate 611 attached to the cylinder 56 is provided with a groove, and the sealing ring 64 is embedded in the groove and attached to the inner wall of the cylinder 56.

When the two support plates 61 are pulled by the fastening pull rod 63, the first support plate 611 abuts against the first step 551, the reaction force of the first step 551 acts on the first support plate 611, and the groove part of the first support plate 611 is deformed under stress, so as to press the sealing ring 64 to further abut against the inner wall of the cylinder 56.

In another embodiment, in order to reduce the force of the supporting plate 61 acting on the step 55, the coolant pump 40 further includes one or more supporting spokes 65, and each supporting spoke 65 is disposed between two supporting plates 61 along the circumference of the housing 50 to maintain the distance between the two supporting plates 61.

The stator 664 may also be mounted on the support spokes 65.

In another embodiment, in order to fix the supporting spokes 65 between two supporting plates 61, two adjacent supporting spokes 65 are connected by a connecting member along the circumferential direction of the housing 50, and all the supporting spokes 65 form a net cage structure as a whole;

the two supporting plates 61 are provided with limiting grooves matched with the supporting spokes 65, and the limiting grooves are used for limiting the positions of the supporting spokes 65 and the corresponding supporting plates 61.

In another embodiment, in order to facilitate the processing of the limiting groove on each supporting plate 61, the two supporting plates 61 extend toward the side where the cylinder 56 is attached, and form an extending portion 613, on the same supporting plate 61, the extending portion 613 and the supporting plate 61 enclose the limiting groove, and each supporting spoke 65 is attached to the groove wall of the limiting groove.

The extension portion 613 is a part of the support plate 61, which can enhance the structural strength of the support plate 61 and can increase the contact surface between the support plate 61 and the inner wall of the cylinder 56, so that the support plate 61 is more stable when mounted in the cylinder 56.

In another embodiment, the coolant pump 40 further includes a base 70 located at the bottom of the housing 50, and the base 70 is used for supporting the housing 50 on a supporting surface (bottom surface).

Referring to fig. 7, fig. 7 is a block diagram of a control method based on the dual cycle cooling system 100 according to an embodiment of the present application.

The control method based on the dual cycle cooling system 100 comprises the following steps:

detecting the ambient temperature;

when the ambient temperature reaches a first preset value, starting the first control valve 313 and the refrigerant pump 40, closing the second control valve 321 and the refrigeration compressor 20, and conveying the refrigerant from the refrigerant storage tank 31 to the cooling equipment 10 through the refrigerant pump 40, and returning the refrigerant to the refrigerant storage tank 31 from the cooling equipment 10;

when the ambient temperature reaches the second preset value, the second control valve 321 and the refrigeration compressor 20 are started, the first control valve 313 and the refrigerant pump 40 are closed, and the refrigerant is delivered to the cooling device 10 from the refrigeration compressor 20 through the connecting pipe 32, and then returns to the refrigeration compressor 20 from the cooling device 10.

According to the ambient temperature of the cooling device 10, the cooling system is controlled to adopt different circulation modes, so that the power consumption is saved, and the service life of the whole cooling system is prolonged.

In another embodiment, the first preset value is less than 10 ℃; the second preset value is greater than 10 ℃. Of course, in other embodiments, the first preset value and the second preset value are adjusted according to the required working temperature of the cooling device 10, and will not be further described herein.

In another embodiment, the ambient temperature is the ambient temperature of the cooling device 10 or the ambient temperature of the refrigerant storage tank 31. Of course, the ambient temperature may also be an indoor or outdoor temperature.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features. When technical features in different embodiments are represented in the same drawing, it can be seen that the drawing also discloses a combination of the embodiments concerned.

The above examples only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application.