A pressure pump integrated machine and a heat exchange system

Abstract

The present application discloses a pressure pump integrated machine and a heat exchange system. The pressure pump integrated machine includes a drive shaft, a drive unit, a pumping unit, and a compression unit. The drive unit is connected to the drive shaft, and the drive unit is used to drive the drive shaft to rotate. The pumping unit includes a pump chamber and a first impeller. The first impeller is accommodated in the pump chamber. The first impeller is connected to the drive shaft, and the first impeller is used to rotate under the drive of the drive shaft to drive the movement of the liquid working medium. The compression unit includes a compression chamber and a second impeller. The second impeller is accommodated in the compression chamber. The second impeller is connected to the drive shaft, and the second impeller is used to rotate under the drive of the drive shaft to compress the gaseous working medium and drive the movement of the gaseous working medium. The pressure pump integrated machine can drive the liquid working medium and can also compress and drive the gaseous working medium. The first impeller in the pumping unit and the second impeller in the compression unit share the drive shaft and are both powered by the drive unit, which can streamline the structure of the pressure pump integrated machine.

Description

Technical Field

[0001] This application relates to the technical field of heat exchange, and particularly to a combined pump and compressor and a heat exchange system. Background Art

[0002] In a heat exchange system, heat exchange of the heat exchange system can be achieved by a compressor delivering a working medium. When the ambient temperature is low, the working medium can also be delivered by a pump. Utilizing the low ambient temperature, the working medium is naturally cooled to achieve heat exchange of the heat exchange system. Generally speaking, the power of the compressor delivering the working medium is higher than that of the pump delivering the working medium.

[0003] To improve the energy-saving performance of the heat exchange system, an independent pump and compressor are simultaneously provided in the heat exchange system. When the ambient temperature is low, the working medium is delivered by the pump. When the ambient temperature is high, the working medium is delivered by the compressor.

[0004] Currently, in a heat exchange system, the independently provided pump and compressor are complex in connection and occupy a large space. Summary of the Invention

[0005] An object of this application is to provide a combined pump and compressor and a heat exchange system with a simple structure and small occupied space.

[0006] In a first aspect, this application provides a combined pump and compressor. The combined pump and compressor includes a drive shaft, a drive unit, a pumping unit, and a compression unit. The drive unit is connected to the drive shaft and is used to drive the drive shaft to rotate. The pumping unit includes a pump chamber and a first impeller. The first impeller is received in the pump chamber and is connected to the drive shaft. The first impeller is used to rotate under the drive of the drive shaft to drive the movement of the liquid working medium. The compression unit includes a compression chamber and a second impeller. The second impeller is received in the compression chamber and is connected to the drive shaft. The second impeller is used to rotate under the drive of the drive shaft to compress the gaseous working medium and drive the movement of the gaseous working medium.

[0007] The combined pump and compressor can drive the movement of the liquid working medium (with the function of a pump), and can also compress and drive the movement of the gaseous working medium (with the function of a compressor). Among them, the first impeller in the pumping unit and the second impeller in the compression unit share the drive shaft and are both powered by the drive unit, which can streamline the structure of the combined pump and compressor, reduce the volume of the combined pump and compressor, and thus reduce the manufacturing cost of the combined pump and compressor.

[0008] In combination with the first aspect, in a possible implementation, the drive unit is received in the pump chamber, and the pump chamber is received in the compression chamber. The drive unit, the pump chamber, and the compression chamber can share the space, and the combined pump and compressor can be made smaller, reducing the occupied space of the combined pump and compressor.

[0009] In combination with the first aspect, in a possible implementation, the drive shaft is received in the compression chamber, and the drive shaft axially penetrates through the pump chamber, the first impeller, the drive unit, and the second impeller along the axial direction of the drive shaft. When the drive shaft is connected to the second impeller, it does not need to penetrate through the side wall of the compression chamber, which can improve the sealing performance of the compression chamber.

[0010] In combination with the first aspect, in a possible implementation, a through hole is provided in the side wall of the pump chamber, and the pump chamber communicates with the compression chamber through the through hole. The gaseous working medium in the compression chamber can enter the pump chamber through the through hole. When the gaseous working medium flows through the drive unit, it can take away the heat of the drive unit, thereby cooling the drive unit. The liquid working medium in the pump chamber can also flow through the drive unit to cool the drive unit.

[0011] In combination with the first aspect, in a possible implementation, the pumping unit includes N first impellers, and the compression unit includes M second impellers, where both N and M are even numbers. Along the axial direction of the drive shaft, the N first impellers are distributed on both sides of the drive unit, and the number of first impellers distributed on both sides of the drive unit is equal. Along the axial direction of the drive shaft, the M second impellers are distributed on both sides of the drive unit, and the number of second impellers distributed on both sides of the drive unit is equal. When the drive unit is operating, the reaction force received by the first side of the drive unit from the first impeller can balance the reaction force received by the second side of the drive unit from the first impeller, and the reaction force received by the first side of the drive unit from the second impeller can balance the reaction force received by the second side of the drive unit from the second impeller, so that the overall force on the drive unit during operation is relatively uniform, which can improve the overall stability of the integrated pressure pump.

[0012] In combination with the first aspect, in a possible implementation, the pump chamber is received in the compression chamber, the drive unit is received in the compression chamber, and the drive unit is located between the pump chamber and the second impeller. Both the pump chamber and the drive unit are in the compression chamber, and the pump chamber and the drive unit share the space with the compression chamber, which can reduce the volume of the integrated pressure pump. When the compression unit compresses the gaseous working medium, the gaseous working medium can flow through the drive unit, which can reduce the temperature of the drive unit. Among them,

[0013] In combination with the first aspect, in a possible implementation, the drive shaft is received in the compression chamber, and the drive shaft axially penetrates through the first impeller, the drive unit, and the second impeller along the axial direction of the drive shaft. The drive shaft, the drive unit, and the pump chamber share the space with the compression chamber, which can reduce the volume of the integrated pressure pump. Among them, the drive shaft is completely in the compression chamber. When the drive shaft is connected to the second impeller, it does not need to penetrate through the side wall of the compression chamber, which can improve the sealing performance of the compression chamber.

[0014] In combination with the first aspect, in a possible implementation, the pump chamber and the compression chamber are axially spaced along the drive shaft, and the drive unit is located between the pump chamber and the compression chamber. The pump chamber and the compression chamber are spaced apart and do not interfere with each other, which is convenient for the installation and disassembly of the integrated pump and compressor. For example, since the drive unit is outside the pump chamber and outside the compression chamber, the installation of the drive unit is not affected by the volume of the pump chamber or the compression chamber, and it is more convenient to install the drive unit.

[0015] In combination with the first aspect, in a possible implementation, the drive shaft axially penetrates the drive unit. The first end extending axially in the drive shaft extends into the pump chamber and penetrates the first impeller; the second end extending axially in the drive shaft extends into the compression chamber and penetrates the second impeller. Since the drive unit is outside the pump chamber and outside the compression chamber, when the drive shaft is installed on the drive unit, the drive shaft is less affected by the dimensions of the pump chamber or the compression chamber, and it is easier to install the drive shaft on the drive unit.

[0016] In combination with the first aspect, in a possible implementation, the pumping unit further includes a first inlet and a first outlet, and the first inlet is connected to the first outlet through the pump chamber. The compression unit further includes a second inlet and a second outlet, and the second inlet is connected to the second outlet through the compression chamber. When the pumping unit is operating, the liquid working medium can enter the pump chamber from the first inlet, and the pump chamber unit can drive the liquid working medium in the pump chamber to be discharged from the first outlet. When the compression unit is operating, the gaseous working medium can enter the compression chamber from the second inlet, and the compression unit can drive the gaseous working medium in the compression chamber to be discharged from the second outlet.

[0017] In combination with the first aspect, in a possible implementation, the pumping unit further includes a first control valve, and the first control valve is used to control the connection or interruption of the connection between the first inlet and the first outlet. The compression unit further includes a second control valve, and the second control valve is used to control the connection or interruption of the connection between the second inlet and the second outlet.

[0018] The first control valve can be used to control the motion state of the liquid working medium driven by the integrated pump and compressor. For example, when the first control valve is opened, the first inlet and the first outlet are connected, and the pumping unit can drive the liquid working medium entering the pump chamber from the first inlet, so that the liquid working medium flows through the first outlet and is discharged outside the integrated pump and compressor. When the first control valve is closed, the connection between the first inlet and the first outlet is interrupted, and the liquid working medium cannot flow between the first inlet and the first outlet. The liquid working medium cannot continuously enter the pump chamber from the first inlet, and the liquid working medium in the pump chamber cannot continuously flow out of the first outlet and outside the integrated pump and compressor.

[0019] The movement state of the gas-liquid pump integrated machine driving the gaseous working medium can be controlled by the second control valve. For example, when the second control valve is opened, the second inlet and the second outlet are connected, and the compression unit can drive the gaseous working medium entering the compression chamber from the second inlet, so that the gaseous working medium flows through the second outlet and is discharged outside the gas-liquid pump integrated machine. When the second control valve is closed, the second inlet and the second outlet are interrupted from being connected, and the gaseous working medium cannot flow between the second inlet and the second outlet. The gaseous working medium cannot continuously enter the compression chamber from the second inlet, and the gaseous working medium in the compression chamber cannot continuously flow out of the gas-liquid pump integrated machine through the second outlet.

[0020] Combined with the first aspect, in a possible implementation manner, the gas-liquid pump integrated machine has a first state. When the gas-liquid pump integrated machine is in the first state, the first inlet, the first outlet and the pump chamber are connected, and the second inlet and the second outlet are interrupted from being connected. The pumping unit is used to transport the liquid working medium entering the pump chamber from the first inlet to the outside of the first outlet. The gas-liquid pump integrated machine can only drive the liquid working medium to move to realize the function of the pump. When the gas-liquid pump integrated machine is in the first state, since the second inlet and the second outlet are interrupted from being connected, the gaseous working medium cannot flow between the second inlet and the second outlet, and the compression unit cannot drive the liquid working medium to move continuously.

[0021] Combined with the first aspect, in a possible implementation manner, the gas-liquid pump integrated machine has a second state. When the gas-liquid pump integrated machine is in the second state, the second inlet, the second outlet and the compression chamber are connected, and the first inlet and the first outlet are interrupted from being connected. The compression unit is used to transport the gaseous working medium entering the compression chamber from the second inlet to the outside of the second outlet. The gas-liquid pump integrated machine can only drive the gaseous working medium to move to realize the function of the compressor. When the gas-liquid pump integrated machine is in the second state, since the first inlet and the first outlet are interrupted from being connected, the liquid working medium cannot flow between the first inlet and the first outlet, and the compression unit cannot drive the gaseous working medium to move continuously.

[0022] Combined with the first aspect, in a possible implementation manner, the gas-liquid pump integrated machine further has a third state. When the gas-liquid pump integrated machine is in the third state, the first inlet, the first outlet and the pump chamber are connected, and the second inlet, the second outlet and the compression chamber are connected. The pumping unit is used to transport the liquid working medium entering the pump chamber from the first inlet to the outside of the first outlet; the compression unit is used to transport the gaseous working medium entering the compression chamber from the second inlet to the outside of the second outlet. The gas-liquid pump integrated machine can drive the gaseous working medium and the liquid working medium to move simultaneously. The pumping unit drives the liquid working medium entering the pump chamber from the first inlet, so that the liquid working medium is discharged outside the gas-liquid pump integrated machine through the first outlet. At the same time, the compression unit drives the gaseous working medium entering the compression chamber from the second inlet, so that the gaseous working medium is discharged outside the gas-liquid pump integrated machine through the second outlet.

[0023] In combination with the first aspect, in a possible implementation, the integrated pump and compressor further includes a thrust bearing sleeved on the drive shaft. The thrust bearing is used to define the axial positions of the first impeller and the second impeller on the drive shaft. When the drive shaft rotates, both the first impeller and the second impeller rotate with the drive shaft. When the first impeller rotates, a first axial load can be generated, and the first axial load is parallel to the axis of the drive shaft. When the second impeller rotates, a second axial load can be generated, and the second axial load is parallel to the axis of the drive shaft. The thrust bearing provided on the drive shaft can be used to bear the first axial load and react against the first impeller to balance the first axial load generated by the rotation of the first impeller, and can prevent the first impeller from axially shifting due to unbalanced force. The thrust bearing provided on the drive shaft can also be used to bear the second axial load and react against the second impeller to balance the second axial load generated by the rotation of the second impeller, and can prevent the second impeller from axially shifting due to unbalanced force.

[0024] In combination with the first aspect, in a possible implementation, the pumping unit further includes a guide vane sleeved on the drive shaft, and the guide vane is received in the pump chamber. The guide vane is used to direct the liquid working medium, which can facilitate the flow of the liquid working medium to the first impeller, and thus can improve the efficiency of the first impeller in driving the liquid working medium.

[0025] In combination with the first aspect, in a possible implementation, the integrated pump and compressor further includes a housing that houses the drive shaft, the drive unit, the pumping unit, and the compression unit. The housing can protect the drive unit, the drive shaft, the pumping unit, and the compression unit, and can reduce or prevent dust from entering the drive unit, the drive shaft, the pumping unit, and the compression unit.

[0026] In a second aspect, the present application further provides a heat exchange system. The heat exchange system includes a condenser, an evaporator, and the above-mentioned integrated pump and compressor. The first end of the evaporator is connected to the first end of the condenser; the first end of the evaporator is further connected to the compression chamber of the integrated pump and compressor, and the compression chamber is further connected to the first end of the condenser; the second end of the condenser is connected to the pump chamber, and the pump chamber is further connected to the second end of the evaporator; the second end of the condenser is further connected to the second end of the evaporator. The integrated pump and compressor has both the functions of a pump and a compressor. The integrated pump and compressor can not only drive the movement of the liquid working medium in the heat exchange system, but also drive the movement of the gaseous working medium in the heat exchange system. When the integrated pump and compressor is applied to the heat exchange system, it can replace the pump and the compressor, which can simplify the overall structure of the heat exchange system and reduce the space occupied by the heat exchange system.

[0027] In combination with the second aspect, in a possible implementation, the pumping unit further includes a first inlet and a first outlet, and the first inlet is connected to the first outlet through the pump chamber; the compression unit further includes a second inlet and a second outlet, and the second inlet is connected to the second outlet through the compression chamber; the first end of the evaporator is connected to the compression chamber through the second inlet; the compression chamber is connected to the first end of the condenser through the second outlet; the second end of the condenser is connected to the pump chamber through the first inlet, and the pump chamber is connected to the second end of the evaporator through the first outlet. The integrated pump and compressor has the function of a pump and can drive the working medium to form a pumping circulation loop in the heat exchange system. For example, the pumping unit drives the liquid working medium in the pump chamber to flow through the first outlet and transports it to the evaporator. The evaporator vaporizes the liquid working medium, and the evaporator discharges the gaseous working medium to the condenser. The condenser liquefies the gaseous working medium and outputs the liquid working medium. The liquid working medium discharged from the condenser flows through the first inlet and enters the pump chamber.

[0028] In combination with the second aspect, in a possible implementation, the heat exchange system has a pumping mode. When the heat exchange system is in the pumping mode, the first inlet is in communication with the first outlet through the pump chamber, and the second inlet is interrupted from communicating with the second outlet. The integrated pump and compressor is used to transport the liquid working medium in the pump chamber through the first outlet to the evaporator. The evaporator is used to vaporize the liquid working medium and transport the gaseous working medium to the condenser. The condenser is used to liquefy the gaseous working medium and allow the liquid working medium to flow through the first inlet and enter the pump chamber. The pumping mode of the heat exchange system is more suitable for low-temperature environments (below 8°C). When the ambient temperature is low (e.g., below 8°C), the gaseous working medium discharged from the evaporator is cooled, and the temperature of the gaseous working medium can drop rapidly. After the lower-temperature gaseous working medium enters the condenser, the condenser can effectively liquefy the lower-temperature gaseous working medium. The condenser does not need to rely on the compression unit to compress the gaseous working medium into a high-pressure state to liquefy the gaseous working medium. When the heat exchange system is in the pumping mode, since the gaseous working medium is not compressed into a high-pressure state by relying on the integrated pump and compressor, the working power of the driving unit will be greatly reduced, thereby reducing the energy consumption of the heat exchange system.

[0029] In combination with the second aspect, in a possible implementation, the heat exchange system has a compression mode. When the heat exchange system is in the compression mode, the first inlet and the first outlet are interrupted from being connected, the second inlet and the second outlet are connected through the compression chamber, the pressure pump integrated machine is used to transport the gaseous working medium in the compression chamber to the condenser through the second outlet, the condenser is used to liquefy the gaseous working medium and transport the liquid working medium to the evaporator, and the evaporator is used to vaporize the liquid working medium and make the gaseous working medium flow through the second inlet into the compression chamber. The compression mode of the heat exchange system is applicable to high-temperature environments (higher than 15 °C). When the ambient temperature is relatively high (for example, higher than 15 °C), the natural heat exchange effect of the gaseous working medium may be poor. By compressing the gaseous working medium into a high-pressure state through the compression unit and then liquefying the gaseous working medium in the high-pressure state by using the condenser, the condenser can effectively liquefy the gaseous working medium. The higher the efficiency of the condenser in liquefying the gaseous working medium, the better the heat exchange effect of the heat exchange system. For example, when using the heat exchange system for heating, when the condenser liquefies a certain amount of gaseous working medium, the higher the efficiency of the condenser in liquefying the gaseous working medium, the more the amount of the gaseous working medium converted into the liquid working medium by the condenser. The more the amount of the gaseous working medium converted into the liquid working medium, the more heat is released when the gaseous working medium is liquefied, and the better the heating effect of the heat exchange system. When using the heat exchange system for cooling, when the condenser liquefies a certain amount of gaseous working medium, the higher the efficiency of the condenser in liquefying the gaseous working medium, the more the amount of the gaseous working medium converted into the liquid working medium by the condenser. The more the amount of the gaseous working medium converted into the liquid working medium, the more the amount of the liquid working medium entering the evaporator. With the evaporation efficiency of the evaporator remaining unchanged, the more the liquid working medium entering the evaporator, the more the amount of the liquid working medium vaporized, and the more heat is absorbed when the liquid working medium is vaporized, and the better the cooling effect of the heat exchange system.

[0030] Combined with the second aspect, in a possible implementation, the heat exchange system also has a hybrid mode. When the heat exchange system is in the hybrid mode, the first inlet and the first outlet are connected through the pump chamber, the second inlet and the second outlet are connected through the compression chamber. The pumping unit is used to output the liquid working medium in the pump chamber from the first outlet to the evaporator. The evaporator is used to vaporize the liquid working medium and make the gaseous working medium enter the compression chamber from the second inlet. The compression unit is used to compress the gaseous working medium and transport the gaseous working medium from the second outlet to the condenser. The condenser is used to liquefy the gaseous working medium and make the liquid working medium flow through the first inlet and enter the pump chamber. When the heat exchange system is in the hybrid mode, on the one hand, using the natural temperature environment to conduct natural heat exchange on the gaseous working medium discharged from the evaporator can reduce the temperature of the gaseous working medium discharged from the evaporator. On the other hand, using the compression unit to compress the gaseous working medium can increase the pressure of the gaseous working medium. Compared with the compression mode, the hybrid mode can absorb the heat of the gaseous working medium discharged from the evaporator by using the natural environment, and can reduce the temperature of the gaseous working medium entering the compression chamber. The lower temperature of the gaseous working medium is more easily liquefied by the condenser. When the liquefaction efficiency of the condenser in the hybrid mode is the same as that in the compression mode, the pressure of the gaseous working medium entering the condenser in the hybrid mode can be lower, and the power of the driving unit to drive the compression unit to compress the gaseous working medium can be lower. It can be understood that the energy consumption of the heat exchange system in the hybrid mode is lower than that in the compression mode. Compared with the pumping mode, the compression unit in the hybrid mode needs to compress the gaseous working medium, and the speed of the driving unit driving the drive shaft to rotate is relatively fast, and the energy consumption is higher than that in the pumping mode. When the ambient temperature is within a preset temperature range (for example, the ambient temperature is between 8 - 15 °C), the heat exchange system can be controlled to be in the hybrid mode. At this time, the heat exchange system can achieve the heat exchange effect in its compression mode, and the energy consumption of the heat exchange system is lower than that in its compression mode. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0032] Figure 1 FIG. 1 is a schematic structural diagram of a heat exchange system provided in Embodiment 1 of the present application;

[0033] Figure 2 FIG. 2 is a top view of a combined pump and compressor provided in Embodiment 1 of the present application;

[0034] Figure 3 FIG. 3 is a top view of another combined pump and compressor provided in Embodiment 1 of the present application;

[0035] Figure 4 The top view of another integrated pressure and pump unit provided in Embodiment 1 of the present application;

[0036] Figure 5 The equivalent structural schematic diagram of the heat exchange system provided in Embodiment 1 of the present application in the pumping mode;

[0037] Figure 6 The equivalent structural schematic diagram of the heat exchange system provided in Embodiment 1 of the present application in the compression mode;

[0038] Figure 7 The equivalent structural schematic diagram of the heat exchange system provided in Embodiment 1 of the present application in the mixing mode;

[0039] Figure 8 The structural schematic diagram of another heat exchange system provided in Embodiment 2 of the present application.

[0040] 100, integrated pressure and pump unit; 110, drive shaft; 120, drive unit; 130, pumping unit; 131, pump chamber; 131a, first inlet; 131b, first outlet; 131c, first control valve; 131d, through hole; 132, first impeller; 133, guide vane; 140, compression unit; 141, compression chamber; 141a, second inlet; 141b, second outlet; 141c, second control valve; 142, second impeller; 150, thrust bearing; 160, housing; 200, condenser; 300, evaporator; 400, throttle valve; 500, third control valve; 600, fourth control valve; 700, fifth control valve; 800, sixth control valve; 10, first pipeline; 20, second pipeline; 30, third pipeline; 40, fourth pipeline; 50, fifth pipeline; 60, sixth pipeline. Detailed implementation manners

[0041] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings.

[0042] Embodiment 1

[0043] Please refer to Figure 1 , Figure 1 The structural schematic diagram of a heat exchange system provided in Embodiment 1 of the present application. The heat exchange system includes an integrated pressure and pump unit 100, a condenser 200, an evaporator 300 and a throttle valve 400. The working medium has two states, liquid and gas. The condenser 200 can convert the gaseous working medium into a gaseous working medium. The evaporator 300 can be used to convert the liquid working medium into a gaseous working medium. The throttle valve 400 can be used to adjust the flow rate of the liquid working medium entering the evaporator 300. The integrated pressure and pump unit 100 can drive the working medium to flow through the evaporator 300, the condenser 200 and the throttle valve 400. The integrated pressure and pump unit 100 can drive the liquid working medium or the gaseous working medium.

[0044] The heat exchange system can lower the temperature of a certain area through heat exchange, or raise the temperature of a certain area. The scenarios where the heat exchange system can be applied include housing, equipment rooms, automobiles, etc. When the heat exchange system is applied to an automobile, when the working fluid flows through the evaporator 300, the working fluid changes from a liquid state to a gaseous state, absorbing the heat inside the vehicle, thereby reducing the temperature inside the vehicle. The heat exchange system can also raise the temperature inside the vehicle. Through the low-temperature ambient temperature or the condenser 200, the working fluid can be changed from a gaseous state to a liquid state, and the working fluid releases heat to the inside of the vehicle, thereby raising the temperature inside the vehicle. Among them, the working fluid can be a refrigerant, such as Freon.

[0045] Please refer to Figure 2 , Figure 2 Fig. 0 is a top view of a combined pressure pump provided in Embodiment 1 of the present application. The combined pressure pump 100 provided in the present application specifically includes a drive shaft 110, a drive unit 120, a pumping unit 130, and a compression unit 140. The drive shaft 110 is connected to the drive unit 120, and the drive shaft 110 passes through the drive unit 120. When the drive unit 120 operates, it can drive the drive shaft 110 to rotate. Among them, the drive unit 120 can be a permanent magnet motor.

[0046] The pumping unit 130 includes a pump chamber 131, a first impeller 132, a first inlet 131a, and a first outlet 131b. The first inlet 131a and the first outlet 131b can be connected through the pump chamber 131 to circulate the liquid working fluid. The first impeller 132 can be located inside the pump chamber 131, and the first impeller 132 can be a centrifugal impeller.

[0047] The compression unit 140 includes a compression chamber 141, a second impeller 142, a second inlet 141a, and a second outlet 141b. The second inlet 141a and the second outlet 141b can be connected through the compression chamber 141 to circulate the gaseous working fluid. The second impeller 142 is located inside the compression chamber 141, and the second impeller 142 can be a centrifugal impeller.

[0048] Among them, the drive shaft 110 is located inside the compression chamber 141, the drive unit 120 is located inside the pump chamber 131, and the pump chamber 131 is located inside the compression chamber 141. The drive shaft 110 axially penetrates the drive unit 120, the pump chamber 131, the first impeller 132, and the second impeller 142 along the axis of the drive shaft 110. The drive shaft 110 is fixedly connected to the first impeller 132 and the second impeller 142. When the drive shaft 110 rotates, it can drive the first impeller 132 and the second impeller 142 to rotate. The drive shaft 110 is movably connected to the drive unit 120, and the drive unit 120 can drive the drive shaft 110 to rotate. The drive shaft 110 is movably connected to the pump chamber 131, and the drive shaft 110 can rotate relative to the pump chamber 131 under the drive of the drive unit 120.

[0049] The pumping unit 130 may further include an oil-free suspension bearing, the outer ring of which may be fixedly connected to the pump chamber 131, and the inner ring of which may allow the drive shaft 110 to pass through and be fixedly connected to the drive shaft 110. The oil-free suspension bearing is used to support the drive shaft 110. It should be noted that the inner ring of the oil-free suspension bearing can rotate relative to the outer ring of the oil-free suspension bearing.

[0050] The compression unit 140 may further include an oil-free air bearing, the outer ring of the oil-free air bearing may be fixedly connected to the compression chamber 141, the inner ring of the oil-free air bearing may be provided for the drive shaft 110 to pass through, and is fixedly connected to the drive shaft 110, and the oil-free air bearing is used to support the drive shaft 110. It should be noted that the inner ring of the oil-free air bearing and the outer ring of the oil-free air bearing may rotate relative to each other.

[0051] The side wall of the pump chamber 131 is provided with a through hole 131d, and the pump chamber 131 can be connected to the compression chamber 141 through the through hole 131d. Figure 2 In the embodiment, the pump chamber 131 is located in the compression chamber 141 , but the space enclosed by the pump chamber 131 does not belong to the space enclosed by the compression chamber 141 .

[0052] When the drive unit 120 drives the drive shaft 110 to rotate, the drive shaft 110 simultaneously drives the first impeller 132 and the second impeller 142 to rotate. When the first impeller 132 rotates, the liquid working medium outside the pressure-pump-integrated machine 100 can enter the pump chamber 131 through the first inlet 131a, and then the liquid working medium in the pump chamber 131 can be discharged outside the pressure-pump-integrated machine 100 through the first outlet 131b. When the second impeller 142 rotates, the gaseous working medium outside the pressure-pump-integrated machine 100 can enter the compression chamber 141 through the second inlet 141a, compress the gaseous working medium in the compression chamber 141, and then discharge the compressed gaseous working medium from the second outlet 141b to the outside of the pressure-pump-integrated machine 100.

[0053] In the embodiment provided in the present application, when the drive unit 120 drives the drive shaft 110 to rotate, the first impeller 132 rotates with the drive shaft 110, which can drive the liquid working medium to move in the pump chamber 131. The liquid working medium can flow through the drive unit 120 in the pump chamber 131 to take away the heat of the drive unit 120 and cool the drive unit 120.

[0054] In the embodiment provided in the present application, when the drive unit 120 drives the drive shaft 110 to rotate, the second impeller 142 rotates along with the drive shaft 110, thereby driving the gaseous working medium to move in the compression chamber 141. The gaseous working medium in the compression chamber 141 can enter the pump chamber 131 through the through hole 131d. The gaseous working medium entering the pump chamber 131 can flow through the drive unit 120 to remove heat from the drive unit 120 and cool the drive unit 120. It should be noted that the gaseous working medium entering the pump chamber 131 can return to the compression chamber 141 through the through hole 131d.

[0055] In the embodiment provided herein, the number of first impellers 132 may be N, and the number of second impellers 142 may be M, where N and M are even numbers, wherein the N first impellers 132 are distributed on the first side and the second side of the drive unit 120, N / 2 of the first impellers 132 are disposed on the first side of the drive unit 120 and are all sleeved on the drive shaft 110, and the remaining N / 2 first impellers 132 are disposed on the second side of the drive unit 120 and are all sleeved on the drive shaft 110. The M second impellers 142 are distributed on the first side and the second side of the pump chamber 131, M / 2 of the second impellers 142 are disposed on the first side of the drive unit 120 and are all sleeved on the drive shaft 110, and the remaining M / 2 of the second impellers 142 are disposed on the second side of the drive unit 120 and are all sleeved on the drive shaft 110. When the driving unit 120 simultaneously drives the first impeller 132 and the second impeller 142 through the driving shaft 110, the reaction force of the first impeller 132 on the first side of the driving unit 120 can balance the reaction force of the first impeller 132 on the second side of the driving unit 120, and the reaction force of the second impeller 142 on the first side of the driving unit 120 can balance the reaction force of the second impeller 142 on the second side of the driving unit 120, so that the overall force on the driving unit 120 is more uniform, thereby improving the overall stability of the pressure pump all-in-one machine 100.

[0056] In the embodiment provided in the present application, the pumping unit 130 may further include a guide vane 133, which may be disposed in the pump chamber 131 and may be sleeved on the drive shaft 110. When the drive shaft 110 rotates, the guide vane 133 may be driven to rotate, thereby guiding the liquid working medium in the pump chamber 131 so that the liquid working medium flows toward the first impeller 132. It should be noted that the guide vane 133 may be an optional component in the integrated pump and pressure machine 100. In the specific installation of the integrated pump and pressure machine 100, the guide vane 133 may be installed on the drive shaft 110, or the guide vane 133 may not be installed on the drive shaft 110.

[0057] The integrated pressure pump 100 further includes a thrust bearing 150. The thrust bearing 150 is arranged on the drive shaft 110 and can be used to define the axial positions of the first impeller 132 and the second impeller 142 on the drive shaft 110, so as to prevent the first impeller 132 and the second impeller 142 from axially moving along the drive shaft 110. The number of the thrust bearings 150 can be multiple or one. The thrust bearing 150 can be arranged between the drive unit 120 and the first impeller 132, or between the drive unit 120 and the second impeller 142, or between the first impeller 132 and the second impeller 142. When the number of the first impellers 132 is multiple, the thrust bearing 150 can be arranged between the first impellers 132. When the number of the second impellers 142 is multiple, the thrust bearing 150 can be arranged between the second impellers 142. When the drive shaft 110 rotates, both the first impeller 132 and the second impeller 142 rotate following the drive shaft 110. When the first impeller 132 rotates, a first axial load can be generated, and the first axial load is parallel to the axis of the drive shaft 110. When the second impeller 142 rotates, a second axial load can be generated, and the second axial load is parallel to the axis of the drive shaft 110. The thrust bearing 150 arranged on the drive shaft 110 can be used to bear the first axial load and react against the first impeller 132 to balance the first axial load generated by the rotation of the first impeller 132, so as to prevent the first impeller 132 from axially shifting due to unbalanced force. The thrust bearing 150 arranged on the drive shaft 110 can also be used to bear the second axial load and react against the second impeller 142 to balance the second axial load generated by the rotation of the second impeller 142, so as to prevent the second impeller 142 from axially shifting due to unbalanced force.

[0058] The integrated pressure pump 100 further includes a housing 160. The housing 160 can accommodate the drive unit 120, the drive shaft 110, the pumping unit 130 and the compression unit 140. The housing 160 can protect the drive unit 120, the drive shaft 110, the pumping unit 130 and the compression unit 140, and can reduce or prevent dust from entering the drive unit 120, the drive shaft 110, the pumping unit 130 and the compression unit 140.

[0059] In the embodiment provided by the present application, the integrated pressure pump 100 has a first state. When the integrated pressure pump 100 is in the first state, the first inlet 131a is connected to the first outlet 131b through the pump chamber 131, and the second inlet 141a and the second outlet 141b are not connected. When the driving unit 120 drives the driving shaft 110 to rotate, the driving shaft 110 drives the first impeller 132 and the second impeller 142 to rotate simultaneously. The rotation of the first impeller 132 can drive the liquid working medium to enter the pump chamber 131 from the first inlet 131a, and make the liquid working medium in the pump chamber 131 flow out from the first outlet 131b. Since the second inlet 141a and the second outlet 141b are not connected, the gaseous working medium outside the integrated pressure pump 100 cannot enter the compression chamber 141 through the second inlet 141a, or the gaseous working medium in the compression chamber 141 cannot be discharged outside the integrated pressure pump 100 through the second outlet 141b. The rotation of the second impeller 142 cannot continuously make the gaseous working medium of the integrated pressure pump 100 enter the compression chamber 141 from the second inlet 141a, and then make the gaseous working medium in the compression chamber 141 be discharged outside the integrated pressure pump 100 through the second outlet 141b. When the integrated pressure pump 100 is in the first state, the integrated pressure pump 100 can be used as a pump.

[0060] The integrated pressure pump 100 also has a second state. When the integrated pressure pump 100 is in the second state, the second inlet 141a and the second outlet 141b are connected, and the first inlet ۱۳۱a and the first outlet 131b are not connected. When the driving unit 120 drives the driving shaft 110 to rotate, the driving shaft 110 drives the first impeller 132 and the second impeller 142 to rotate simultaneously. Since the first inlet 131a and the first outlet 131b are not connected, the liquid working medium outside the integrated pressure pump 100 cannot enter the pump chamber 131 through the first inlet 131a, or the liquid working medium in the pump chamber 131 cannot be discharged outside the integrated pressure pump 100 through the first outlet 131b. The rotation of the first impeller 132 cannot continuously make the liquid working medium of the integrated pressure pump 100 enter the pump chamber 131 from the first inlet 131a, and then make the liquid working medium in the pump chamber 131 be discharged outside the integrated pressure pump 100 through the first outlet 131b. The rotation of the second impeller 142 can drive the gaseous working medium to enter the compression chamber 141 from the second inlet 141a, compress the gaseous working medium in the compression chamber 141, and can make the gaseous working medium in the compression chamber 141 be discharged from the second outlet 141a. When the integrated pressure pump 100 is in the second state, the integrated pressure pump 100 can be used as a compressor.

[0061] The integrated pressure pump 100 further has a third state. When the integrated pressure pump 100 is in the third state, the first inlet 131a is communicated with the first outlet 131b through the pump chamber 131, and the second inlet 141a is communicated with the second outlet 141b through the compression chamber 141. When the driving unit 120 drives the driving shaft 110 to rotate, the driving shaft 110 drives the first impeller 132 and the second impeller 142 to rotate simultaneously. The rotation of the first impeller 132 can drive the liquid working medium to enter the pump chamber 131 from the first inlet 131a and transport the liquid working medium in the pump chamber 131 to the outside of the first outlet 131b. The rotation of the second impeller 142 drives the gaseous working medium to enter the compression chamber 141 from the second inlet 141a and transports the gaseous working medium in the compression chamber 141 to the outside of the second outlet 141b. At the same moment, the integrated pressure pump 100 can not only drive the liquid working medium to move, but also compress the gaseous working medium and drive the gaseous working medium to move. It can be understood that at the same time, the integrated pressure pump 100 has the functions of a pump and a compressor.

[0062] In the embodiments provided in the present application, please refer to Figure 2 , the pumping unit 130 may further include a first control valve 131c. The first control valve 131c can control the communication between the first inlet 131a and the first outlet 131b. Specifically, when the first control valve 131c is opened, the first inlet 131a is connected to the first outlet 131b through the pump chamber 131. At this time, if the first impeller 132 rotates, it can suck the liquid working medium outside the integrated pressure pump 100 through the first inlet 131a. The rotation of the first impeller 132 can also drive the liquid working medium in the pump chamber 131 to discharge the liquid working medium from the first outlet 131b. When the first control valve 131c is closed, the first control valve 131c blocks the communication between the first inlet 131a and the first outlet 131b. At this time, the first control valve 131c prevents the liquid working medium from flowing from the first inlet 131a to the first outlet 131b.

[0063] Exemplarily, the number of the first control valves 131c may be two. One first control valve 131c may be arranged at the first inlet 131a, and the other first control valve 131c may be arranged at the first outlet 131b. If the first control valve 131c at the first inlet 131a and the first control valve 131c at the first outlet 131b are both opened, the rotation of the first impeller 132 can suck the liquid working medium outside the integrated pressure pump 100 from the first inlet 131a into the pump chamber 131 and can discharge the liquid working medium in the pump chamber 131 from the first outlet 131b. If the first control valve 131c at the first inlet 131a and the first control valve 131c at the first outlet 131b are both closed, the liquid working medium outside the integrated pressure pump 100 cannot enter the pump chamber 131 from the first inlet 131a, and the liquid working medium in the pump chamber 131 cannot be discharged through the first outlet 131b.

[0064] In the embodiments provided in the present application, please refer to Figure 2 , the compression unit 140 further includes a second control valve 141c. The second control valve 141c can control the connection between the second inlet 141a and the second outlet 141b. Specifically, when the second control valve 141c is opened, the second inlet 141a is connected to the second outlet 141b through the compression chamber 141. When the second impeller 142 rotates, it can suck the gaseous working medium outside the pressure pump integrated machine 100 through the second inlet 141a. When the second impeller 142 rotates, it can also compress and drive the gaseous working medium in the compression chamber 141, so that the gaseous working medium is discharged from the second outlet 141b. When the second control valve 141c is closed, the second control valve 141c blocks the connection between the second inlet 141a and the second outlet 141b. At this time, the second control valve 141c prevents the gaseous working medium from flowing from the second inlet 141a to the second outlet 141b.

[0065] Exemplarily, the number of the second control valves 141c can be two. One second control valve 141c can be arranged at the second inlet 141a, and the other second control valve 141c can be arranged at the second outlet 141b. If the second control valve 141c at the second inlet 141a and the second control valve 141c at the second outlet 141b are both opened, when the second impeller 142 rotates, it can suck the gaseous working medium outside the pressure pump integrated machine 100 from the second inlet 141a into the compression chamber 141, and can discharge the gaseous working medium in the compression chamber 141 from the second outlet 141b. If the second control valve 141c at the second inlet 141a and the second control valve 141c at the second outlet 141b are both closed, the gaseous working medium outside the pressure pump integrated machine 100 cannot enter the compression chamber 141 from the second inlet 141a, and the gaseous working medium in the compression chamber 141 cannot be discharged through the second outlet 141b.

[0066] In the embodiments provided in the present application, the state of the pressure pump integrated machine 100 can be controlled by controlling the states of the first control valve 131c and the second control valve 141c. Specifically, when the first control valve 131c is opened and the second control valve 141c is closed, the pressure pump integrated machine 100 can be in the first state. When the first control valve 131c is closed and the second control valve 141c is opened, the pressure pump integrated machine 100 can be in the second state. When the first control valve 131c is opened and the second control valve 141c is opened, the pressure pump integrated machine can be in the third state.

[0067] In some embodiments, please refer to Figure 3 , Figure 3 is a top view of another pressure pump integrated machine provided in Embodiment 1 of the present application. Different from the pressure pump integrated machine shown in Figure 2 , Figure 3In the pressure pump integrated machine shown, the drive unit 120 is located within the compression chamber 141 and outside the pump chamber 131. The pump chamber 131 and the second impeller 142 are arranged at intervals along the axial direction of the drive shaft 110, and the drive unit 120 is located between the pump chamber 131 and the second impeller 142. The drive shaft 110 is located within the compression chamber 141, and the drive shaft 110 axially passes through the drive unit 120, the first impeller 132, and the second impeller 142 along the axial direction of the drive shaft 110.

[0068] Among them, the first impeller 132 is located within the pump chamber 131. It can be understood that the drive unit 120 is located between the pump chamber 131 and the second impeller 142. Refer to Figure 3 , the first impeller 132 is located on the first side of the drive unit 120, and the second impeller is located on the second side of the drive unit 120. The reaction force received by the drive unit 120 on the first side from the first impeller 132 can balance the reaction force received by the drive unit 120 on the second side from the second impeller 142, which can make the overall force on the drive unit 120 more uniform and improve the overall stability of the pressure pump integrated machine 100.

[0069] When the drive unit 120 drives the drive shaft 110 to rotate, the drive shaft 110 simultaneously drives the first impeller 132 and the second impeller 142 to rotate. When the second impeller 142 drives the gaseous working medium to move, the gaseous working medium can flow through the drive unit 120 located in the compression chamber 141 to drive the heat of the drive unit 120, thereby reducing the temperature of the drive unit 120.

[0070] In some embodiments, please refer to Figure 4 , Figure 4 is a top view of another pressure pump integrated machine provided in Embodiment 1 of the present application. Different from the Figure 2 pressure pump integrated machine 100 described above, Figure 4 in the pressure pump integrated machine 100 shown, the drive unit 120 is located outside the pump chamber 131 and the drive unit 120 is located outside the compression chamber 141. The pump chamber 131 and the compression chamber 141 are arranged at intervals along the axial direction of the drive shaft 110, and the drive unit 120 is located between the pump chamber 131 and the compression chamber 141. The drive shaft 110 axially penetrates the drive unit 120, the first impeller 132, and the second impeller 142 along the axial direction of the drive shaft 110.

[0071] Among them, the first impeller 132 is located within the pump chamber 131, and the second impeller 142 is located within the compression chamber 141. It can be understood that the drive unit 120 is located between the first impeller 132 and the second impeller 142. Please refer to Figure 4, the first impeller 132 is located on the first side of the drive unit 120, and the second impeller is located on the second side of the drive unit 120. The reaction force exerted on the first side of the drive unit 120 by the first impeller 132 can balance the reaction force exerted on the second side of the drive unit by the second impeller 142, enabling the overall force on the drive unit 120 to be more uniform and improving the overall stability of the integrated pressure pump 100.

[0072] Since the drive unit 120 is outside the compression chamber 141 and also outside the pump chamber 131, on the one hand, it is convenient for the drive unit 120 to dissipate heat naturally. On the other hand, when assembling the integrated pressure pump 100, it is convenient to install the drive unit.

[0073] In this embodiment, please refer to Figure 1 , the first end of the evaporator 300 is connected to the first end of the condenser 200, the second end of the condenser 200 is connected to the first inlet 131a of the integrated pressure pump 100, the first outlet 131b of the integrated pressure pump 100 is connected to the first end of the throttle valve 400, and the second end of the throttle valve 400 is connected to the second end of the evaporator 300. The first end of the evaporator 300 is also connected to the second inlet 141a of the integrated pressure pump 100, the second outlet 141b is connected to the first end of the condenser 200, and the second end of the condenser 200 is also connected to the first end of the throttle valve 400. It can be understood that the liquid working medium discharged from the first outlet 131b of the integrated pressure pump 100 first flows through the throttle valve 400 and then enters the evaporator 300. The liquid working medium discharged from the second end of the condenser 200 also first flows through the throttle valve 400 and then enters the evaporator 300.

[0074] The heat exchange system includes a pumping module, a compression mode, and a mixing mode. In the embodiment, the first state of the integrated pressure pump 100 corresponds to the pumping mode of the heat exchange system, the second state of the integrated pressure pump 100 corresponds to the compression mode of the heat exchange system, and the third state of the integrated pressure pump 100 corresponds to the mixing mode of the heat exchange system.

[0075] Please refer to Figure 5 , Figure 5Schematic diagram of the equivalent structure of the heat exchange system provided in Embodiment 1 of the present application in the pumping mode. The first control valve 131c is opened, and the second control valve 141c is closed. When the heat exchange system is in the pumping mode, the gaseous working medium discharged from the first end of the evaporator 300 directly enters the condenser 200. The condenser 200 can cool the gaseous working medium to convert the gaseous working medium into a liquid working medium. The liquid working medium flows out from the second end of the condenser 200 and flows into the integrated pressure pump 100 from the first inlet 131a. The integrated pressure pump 100 drives the liquid working medium to be discharged from the first outlet 131b and then returns to the evaporator 300. The evaporator 300 vaporizes the liquid working medium into a gaseous working medium and discharges the gaseous working medium from the first end of the evaporator 300. At this time, the integrated pressure pump 100 serves as the power source for driving the liquid working medium to form a pumping circulation loop in the heat exchange system. For the direction of movement of the liquid working medium, please refer to Figure 5 the arrow direction in

[0076] Please refer to Figure 6 , Figure 6 Schematic diagram of the equivalent structure of the heat exchange system provided in Embodiment 1 of the present application in the compression mode. The first control valve 131c is closed, and the second control valve 141c is opened. When the heat exchange system is in the compression mode, the gaseous working medium discharged from the first end of the evaporator 300 first enters the integrated pressure pump 100 from the second inlet 141a. The integrated pressure pump 100 compresses the gaseous working medium and discharges the gaseous working medium from the second outlet 141b to the condenser 200. The condenser 200 cools the gaseous working medium and converts the gaseous working medium into a liquid working medium. The liquid working medium discharged from the second end of the condenser 200 returns to the evaporator 300. The evaporator 300 vaporizes the liquid working medium into a gaseous working medium and discharges the gaseous working medium from the first end of the evaporator 300. At this time, the integrated pressure pump 100 serves as the power source for driving the gaseous working medium to form a compression circulation loop in the heat exchange system. For the direction of movement of the gaseous working medium, please refer to Figure 6 the arrow direction in

[0077] Please refer to Figure 7 , Figure 7Schematic diagram of the equivalent structure of the heat exchange system provided in Embodiment 1 of the present application in the hybrid mode. When the first control valve 131c is opened and the second control valve is opened, and the heat exchange system is in the hybrid mode, the gaseous working medium discharged from the first end of the evaporator 300 enters the integrated pressure pump 100 from the second inlet 141a. The integrated pressure pump 100 compresses the gaseous working medium and discharges the gaseous working medium from the second outlet 141b into the condenser 200. The condenser 200 cools the gaseous working medium and converts the gaseous working medium into a liquid working medium. After the condenser 200 converts the gaseous working medium into a liquid working medium, the liquid working medium is discharged. The liquid working medium discharged from the condenser 200 enters the integrated pressure pump 100 from the first inlet 131a. The integrated pressure pump 100 drives the liquid working medium to discharge the liquid working medium from the first outlet 131b and then return to the evaporator 300. The evaporator 300 vaporizes the liquid working medium and then discharges the gaseous working medium from the first end of the evaporator 300. The integrated pressure pump 100 drives both the gaseous working medium and the liquid working medium simultaneously to form a hybrid circulation loop in the heat exchange system. For the direction of movement of the working medium, refer to Figure 7 the arrow direction in

[0078] In this embodiment, the operating mode of the heat exchange system can be selected according to the ambient temperature. Exemplarily, when the ambient temperature is lower than the first temperature, the heat exchange system can be controlled to be in the pumping mode. When the driving unit 120 operates, although the second impeller 142 also rotates following the driving shaft 110, however, since the second inlet 141a and the second outlet 141b are interrupted and not connected, the second impeller 142 does not do work on the gaseous working medium (the second impeller 142 rotates, but does not compress the gaseous working medium nor drive the gaseous working medium to move). The driving unit 120 only needs to drive the driving shaft 110 to rotate at a lower speed to enable the pumping unit 130 to drive the liquid working medium to move. At this time, the energy consumption of the integrated pressure pump 100 is relatively low. For example, the first temperature can be 8°C. When the ambient temperature is lower than 8°C, at this time, the ambient temperature at a lower temperature can be used for natural heat exchange of the gaseous working medium. The heat exchange system does not need to first compress the gaseous working medium into a high-pressure state by the compression unit 140 and then use the condenser 200 to liquefy the gaseous working medium in the high-pressure state for heat exchange. Therefore, when the ambient temperature is lower than the first temperature, controlling the heat exchange system to be in the pumping mode can reduce the energy consumption of the heat exchange system.

[0079] When the ambient temperature is higher than the second temperature, and the second temperature is higher than the first temperature, the natural environment cannot effectively absorb the heat of the gaseous working medium. If the gaseous working medium is not compressed into a high-pressure state, the condenser cannot effectively liquefy the gaseous working medium, which will lead to a reduction in the heat exchange efficiency of the heat exchange system. To improve the heat exchange efficiency of the heat exchange system, the heat exchange system can be controlled to be in the compression mode. In the compression mode of the heat exchange system, the driving unit 120 needs to drive the driving shaft 110 to rotate at a high speed so that when the second impeller 142 rotates, the gaseous working medium can be compressed into a high-pressure state. The gaseous working medium in the high-pressure state enters the condenser 200 and is more easily liquefied. The gaseous working medium releases heat during the liquefaction process. The liquefied gaseous working medium enters the evaporator 300, and the evaporator 300 vaporizes the liquid working medium. The liquid working medium can absorb heat during the vaporization process. In the compression mode of the heat exchange system, the driving unit 120 needs to drive the driving shaft 110 to rotate at a high speed to compress the gaseous working medium into a high-pressure state, and the energy consumption of the heat exchange system is relatively high. For example, the second temperature can be 15 °C. When the ambient temperature is higher than 15 °C, the gaseous working medium cannot effectively exchange heat with the natural temperature environment (the ambient temperature is relatively high, and the heat exchange consumption of the gaseous working medium is relatively low). To enable the condenser 200 to effectively liquefy the gaseous working medium, it is necessary to make the driving unit 120 drive the driving shaft 110 to rotate at a high speed to compress the gaseous working medium entering the integrated pressure pump 100 into a high-pressure state. After the gaseous working medium in the high-pressure state enters the condenser 200, the condenser 200 can effectively liquefy the gaseous working medium, and thus the heat exchange system can achieve the preset heat exchange effect. It should be noted that when the heat exchange system is heating, the higher the efficiency of the condenser 200 in liquefying the gaseous working medium, the more the gaseous working medium is liquefied, and the more heat is released by the liquefaction of the gaseous working medium, and the better the heating effect of the heat exchange system. When the heat exchange system is cooling, the higher the efficiency of the condenser 200 in liquefying the gaseous working medium, the more the gaseous working medium is liquefied, and the condenser 200 can deliver more liquid working medium to the evaporator 300. The more heat is absorbed when the liquid working medium is vaporized by the evaporator 300, and the better the cooling effect of the heat exchange system.

[0080] When the ambient temperature is between the first temperature and the second temperature, the heat exchange system can be controlled to be in the hybrid mode. In the hybrid mode, the gaseous working medium discharged from the evaporator 300 can undergo natural heat exchange. The compression unit 140 can also compress the gaseous working medium discharged from the evaporator 300. The compression unit 140 conveys the compressed gaseous working medium to the condenser 200, and the condenser 200 liquefies the compressed gaseous working medium. Compared with the compression mode, the hybrid mode utilizes the natural environment to absorb the heat of the gaseous working medium discharged from the evaporator 300. The temperature of the gaseous working medium entering the compression chamber 141 in the hybrid mode is lower, which is more convenient for the condenser 200 to liquefy. When the liquefaction efficiency of the condenser 200 in the hybrid mode is the same as that in the compression mode, the pressure of the gaseous working medium entering the condenser 200 in the hybrid mode can be lower, and the power of the driving unit 120 to drive the compression unit 140 to compress the gaseous working medium can be lower. Understandably, the energy consumption of the heat exchange system in the hybrid mode is lower than that in the compression mode. Compared with the pumping mode, in the hybrid mode, the compression unit 140 needs to compress the gaseous working medium, and the driving unit 120 drives the driving shaft 110 to rotate at a faster speed, and the energy consumption is higher than that in the pumping mode. For example, when the ambient temperature is between 8 - 15 °C, the heat exchange system can be controlled to be in the hybrid mode.

[0081] In the embodiment provided in the present application, the integrated pump and compressor 100 can not only be used as the power source for driving the movement of the liquid working medium in the heat exchange system, but also be used as the power source for driving the movement of the gaseous working medium in the heat exchange system. Understandably, the integrated pump and compressor 100 has both the functions of a pump and a compressor. After the integrated pump and compressor 100 is arranged in the heat exchange system, there is no need to arrange a pump and a compressor anymore, which can simplify the overall structure of the heat exchange system, reduce the occupied space of the heat exchange system, and reduce the manufacturing cost of the heat exchange system.

[0082] Embodiment 2

[0083] Please refer to Figure 8 , Figure 8 FIG. 2 is a schematic structural diagram of another heat exchange system provided in Embodiment 2 of the present application. The heat exchange system may include an evaporator 300, an integrated pump and compressor 100, a condenser 200, a throttle valve 400, a first pipeline 10, a second pipeline 20, a third pipeline 30, a fourth pipeline 40, a fifth pipeline 50, a sixth pipeline 60, and a control valve group. The control valve group may include a third control valve 500, a fourth control valve 600, a fifth control valve 700, and a sixth control valve 800. Details of the integrated pump and compressor 100 may be referred to the description in Embodiment 1.

[0084] The first end of the evaporator 300 is connected to the second inlet 141a of the integrated pressure pump 100 through the first pipeline 10, and the first end of the evaporator 300 is connected to the first end of the condenser 200 through the second pipeline 20. The second outlet 141b of the integrated pressure pump 100 is connected to the first end of the condenser 200 through the third pipeline 30. The second end of the condenser 200 is connected to the first inlet 131a of the integrated pressure pump 100 through the fourth pipeline 40, and the second end of the condenser 200 is connected to the second end of the evaporator 300 through the fourth pipeline 40 and the fifth pipeline 50. The first outlet 131b of the integrated pressure pump 100 is connected to the second end of the evaporator 300 through the sixth pipeline 60.

[0085] Among them, the third control valve 500 is arranged in the first pipeline 10, the fourth control valve 600 is arranged in the second pipeline 20, the fifth control valve 700 is arranged in the fourth pipeline 40, and the sixth control valve 800 is arranged in the fifth pipeline 50.

[0086] When the third control valve 500 is opened, the first end of the evaporator 300 is communicated with the second inlet 141a through the first pipeline 10. At this time, the gaseous working medium discharged from the first end of the evaporator 300 can flow through the third control valve 500 and enter the integrated pressure pump 100 through the second inlet 141a. When the third control valve 500 is closed, the third control valve 500 blocks the communication between the first end of the evaporator 300 and the second inlet 141a. At this time, the gaseous working medium discharged from the first end of the evaporator 300 cannot enter the integrated pressure pump 100 from the second inlet 141a.

[0087] When the fourth control valve 600 is opened, the first end of the evaporator 300 is communicated with the first end of the condenser 200 through the second pipeline 20. At this time, the gaseous working medium discharged from the first end of the evaporator 300 can flow through the fourth control valve 600 and enter the condenser 200. When the fourth control valve 600 is closed, the fourth control valve 600 blocks the communication between the first end of the evaporator 300 and the first end of the condenser 200. At this time, the gaseous working medium discharged from the first end of the evaporator 300 cannot directly enter the condenser 200.

[0088] When the fifth control valve 700 is opened, the second end of the condenser 200 is communicated with the first inlet 131a through the fifth pipeline 50. At this time, the liquid working medium discharged from the second end of the condenser 200 can flow through the fifth control valve 700 and enter the integrated pressure pump 100 through the first inlet 131a. When the fifth control valve 700 is closed, the fifth control valve 700 blocks the communication between the second end of the condenser 200 and the first inlet 131a. At this time, the liquid working medium discharged from the second end of the condenser 200 cannot enter the integrated pressure pump 100.

[0089] When the sixth control valve 800 is opened, the second end of the condenser 200 communicates with the second end of the evaporator 300 through the sixth pipeline 60. At this time, the liquid working medium discharged from the second end of the condenser 200 can flow through the sixth control valve 800 and enter the evaporator 300. When the sixth control valve 800 is closed, the sixth control valve 800 blocks the communication between the second end of the condenser 200 and the second end of the evaporator 300. At this time, the liquid working medium discharged from the second end of the condenser 200 cannot enter the evaporator 300.

[0090] In this embodiment, the heat exchange system has a pumping mode, a compression mode, and a hybrid mode.

[0091] The control valve group can be used to control the heat exchange system to be in the pumping mode. Specifically, the third control valve 500 is closed, the fourth control valve 600 is opened, the fifth control valve 700 is opened, and the sixth control valve 800 is closed. At this time, the gaseous working medium discharged from the first end of the evaporator 300 flows through the fourth control valve 600 and enters the condenser 200. The condenser 200 cools the gaseous working medium to liquefy it. The liquid working medium is discharged from the second end of the condenser 200, then flows through the fifth control valve 700, enters the pump-compressor integrated unit 100 from the first inlet 131a. The pump-compressor integrated unit 100 drives the liquid working medium, and the liquid working medium is discharged from the first outlet 131b, flows through the sixth pipeline 60 and enters the evaporator 300. The evaporator 300 vaporizes the liquid working medium, and the gaseous working medium is discharged from the first end of the evaporator 300. At this time, a pumping circulation loop is formed in the heat exchange system.

[0092] The control valve group can be used to control the heat exchange system to be in the compression state. Specifically, the third control valve 500 is opened, the fourth control valve 600 is closed, the fifth control valve 700 is closed, and the sixth control valve 800 is opened. At this time, the gaseous working medium discharged from the first end of the evaporator 300 flows through the third control valve 500 and then enters the pump-compressor integrated unit 100 through the second inlet 141a. The pump-compressor integrated unit 100 compresses the gaseous working medium, and the gaseous working medium is discharged from the second outlet 141b, flows through the third pipeline 30 and enters the condenser 200. The condenser 200 cools the gaseous working medium to liquefy it. The liquid working medium is discharged from the second end of the condenser 200, then flows through the sixth control valve 800 and enters the evaporator 300. The evaporator 300 vaporizes the liquid working medium, and the gaseous working medium is discharged from the second end of the evaporator 300. At this time, a compression circulation loop is formed in the heat exchange system.

[0093] The heat exchange system can be controlled to be in a mixed mode through a control valve group. Specifically, the third control valve 500 is opened, the fourth control valve 600 is closed, the fifth control valve 700 is opened, and the sixth control valve 800 is closed. At this time, the gaseous working medium discharged from the first end of the evaporator 300 can flow through the third control valve 500 and enter the integrated compressor-pump 100 through the second inlet 141a. The integrated compressor-pump 100 compresses the gaseous working medium and can discharge the compressed gaseous working medium from the second outlet 141b. The compressed gaseous working medium flows through the third pipeline 30 and enters the condenser 200. The condenser 200 cools the gaseous working medium and converts the gaseous working medium into a liquid working medium. The liquid working medium is discharged from the second end of the condenser 200 and enters the integrated compressor-pump 100 from the first inlet 131a. The integrated compressor-pump 100 drives the liquid working medium to discharge the liquid working medium from the first outlet 131b. The liquid working medium discharged from the first outlet 131b flows through the sixth pipeline 60 and then enters the evaporator 300 again. The evaporator 300 vaporizes the liquid working medium and discharges the gaseous working medium from the first end of the evaporator 300. At this time, a mixed circulation loop is formed in the heat exchange system. [[ID=^{2}]]

[0094] In this embodiment, the operating mode of the heat exchange system can also be selected according to the ambient temperature. The selection method of the operating mode of the heat exchange system is the same as that described in Embodiment 1, and will not be elaborated in this application.

[0095] Among them, the above Embodiments 1 to 2 can be combined with each other.

[0096] As mentioned above, the above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed in the present application can easily think of changes or substitutions, which should all be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A pressure pump integrated machine, characterized in that, The integrated pressure pump includes: A drive shaft; A drive unit, which is connected to the drive shaft and is used to drive the drive shaft to rotate; A pumping unit, which includes a pump chamber and a first impeller. The first impeller is received in the pump chamber and is connected to the drive shaft. The first impeller is used to rotate under the drive of the drive shaft to drive the movement of the liquid working medium; A compression unit, which includes a compression chamber and a second impeller. The second impeller is received in the compression chamber and is connected to the drive shaft. The second impeller is used to rotate under the drive of the drive shaft to compress the gaseous working medium and drive the movement of the gaseous working medium; The pumping unit further includes a first inlet and a first outlet, and the first inlet is connected to the first outlet through the pump chamber; The compression unit further includes a second inlet and a second outlet, and the second inlet is connected to the second outlet through the compression chamber; The pumping unit further includes a first control valve, which is used to control the connection or interruption of the connection between the first inlet and the first outlet; The compression unit further includes a second control valve, which is used to control the connection or interruption of the connection between the second inlet and the second outlet.

2. The integrated pressure pump according to claim 1, wherein The drive unit is received in the pump chamber, and the pump chamber is received in the compression chamber.

3. The integrated pressure pump according to claim 2, wherein The drive shaft is received in the compression chamber, and the drive shaft axially penetrates through the pump chamber, the first impeller, the drive unit and the second impeller along the axial direction of the drive shaft.

4. The integrated pressing pump according to claim 2, wherein, A through hole is provided on the side wall of the pump chamber, and the pump chamber is communicated with the compression chamber through the through hole.

5. The integrated pressure pump according to claim 2, characterized in that, The pumping unit includes N first impellers, and the compression unit includes M second impellers. Both N and M are even numbers; Axially along the drive shaft, N first impellers are distributed on both sides of the drive unit, and the number of first impellers distributed on both sides of the drive unit is equal; Axially along the drive shaft, M second impellers are distributed on both sides of the drive unit, and the number of second impellers distributed on both sides of the drive unit is equal.

6. The integrated pressure pump according to claim 1, wherein, The pump chamber is received in the compression chamber, the drive unit is received in the compression chamber, and the drive unit is located between the pump chamber and the second impeller.

7. The integrated pressing and pumping machine according to claim 6, wherein, The drive shaft is received in the compression chamber, and the drive shaft axially penetrates through the first impeller, the drive unit and the second impeller along the axial direction of the drive shaft.

8. The integrated pressure pump according to claim 1, characterized in that, The pump chamber and the compression chamber are axially spaced apart, and the drive unit is located between the pump chamber and the compression chamber.

9. The integrated pressure pump according to claim 8, wherein The drive shaft axially penetrates through the drive unit. The first end axially extending in the drive shaft extends into the pump chamber and penetrates through the first impeller; the second end axially extending in the drive shaft extends into the compression chamber and penetrates through the second impeller.

10. The integrated pressure pump as claimed in claim 1, wherein, The integrated pressure pump has a first state. When the integrated pressure pump is in the first state, the first inlet, the first outlet, and the pump chamber are in communication, the second inlet and the second outlet are interrupted from communicating, and the pumping unit is configured to transport the liquid working medium that enters the pump chamber from the first inlet to the outside of the first outlet.

11. The integrated pressure pump according to claim 1, characterized in that, The integrated pressure pump has a second state. When the integrated pressure pump is in the second state, the second inlet, the second outlet, and the compression chamber are in communication, the first inlet and the first outlet are interrupted from communicating, and the compression unit is configured to transport the gaseous working medium that enters the compression chamber from the second inlet to the outside of the second outlet.

12. The integrated pressure pump according to claim 1, wherein, The integrated pressure pump further has a third state. When the integrated pressure pump is in the third state, the first inlet, the first outlet, and the pump chamber are in communication, and the second inlet, the second outlet, and the compression chamber are in communication. The pumping unit is configured to transport the liquid working medium that enters the pump chamber from the first inlet to the outside of the first outlet; the compression unit is configured to transport the gaseous working medium that enters the compression chamber from the second inlet to the outside of the second outlet.

13. The integrated pressure pump according to any one of claims 1-12, characterized in that The integrated pressure pump further includes a thrust bearing. The thrust bearing is sleeved on the drive shaft, and the thrust bearing is configured to define the axial positions of the first impeller and the second impeller on the drive shaft.

14. The integrated pressure pump according to any one of claims 1-12, characterized in that, The pumping unit further includes a guide vane sleeved on the drive shaft, and the guide vane is received in the pump chamber.

15. The integrated pressure pump according to any one of claims 1-12, characterized in that, The integrated pressure pump further includes a housing, and the housing accommodates the drive shaft, the drive unit, the pumping unit, and the compression unit.

16. A heat exchange system, characterized in that, It includes a condenser, an evaporator, and the integrated pressure pump according to any one of claims 1-15; The first end of the evaporator is connected to the first end of the condenser; The first end of the evaporator is further connected to the compression chamber of the integrated pressure pump, and the compression chamber is further connected to the first end of the condenser; The second end of the condenser is connected to the pump chamber of the integrated pressure pump, and the pump chamber is further connected to the second end of the evaporator; The second end of the condenser is further connected to the second end of the evaporator.

17. The heat exchange system according to claim 16, wherein The pumping unit further includes a first inlet and a first outlet, and the first inlet is connected to the first outlet through the pump chamber; the compression unit further includes a second inlet and a second outlet, and the second inlet is connected to the second outlet through the compression chamber; the first end of the evaporator is connected to the compression chamber through the second inlet; the compression chamber is connected to the first end of the condenser through the second outlet; the second end of the condenser is connected to the pump chamber through the first inlet, and the pump chamber is connected to the second end of the evaporator through the first outlet.

18. The heat exchange system according to claim 17, wherein The heat exchange system has a pumping mode. When the heat exchange system is in the pumping mode, the first inlet and the first outlet are connected through the pump chamber, the second inlet and the second outlet are interrupted from being connected, and the pump-compressor unit is used to transport the liquid working medium in the pump chamber to the evaporator through the first outlet. The evaporator is used to vaporize the liquid working medium and transport the gaseous working medium to the condenser. The condenser is used to liquefy the gaseous working medium and make the liquid working medium flow through the first inlet into the pump chamber.

19. The heat exchange system according to claim 17, wherein, The heat exchange system has a compression mode. When the heat exchange system is in the compression mode, the first inlet and the first outlet are interrupted from being connected, the second inlet and the second outlet are connected through the compression chamber, and the pump-compressor unit is used to transport the gaseous working medium in the compression chamber to the condenser through the second outlet. The condenser is used to liquefy the gaseous working medium and transport the liquid working medium to the evaporator. The evaporator is used to vaporize the liquid working medium and make the gaseous working medium flow through the second inlet into the compression chamber.

20. The heat exchange system according to claim 17, characterized in that, The heat exchange system also has a mixing mode. When the heat exchange system is in the mixing mode, the first inlet and the first outlet are connected through the pump chamber, the second inlet and the second outlet are connected through the compression chamber. The pumping unit is used to output the liquid working medium in the pump chamber from the first outlet to the evaporator. The evaporator is used to vaporize the liquid working medium and make the gaseous working medium enter the compression chamber from the second inlet. The compression unit is used to compress the gaseous working medium and make the gaseous working medium be transported to the condenser through the second outlet. The condenser is used to liquefy the gaseous working medium and make the liquid working medium flow through the first inlet into the pump chamber.

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