A thermal management system and adsorption bed refrigeration equipment

Abstract

A thermal management system and an adsorption bed refrigeration device are used to meet refrigeration requirements and achieve continuous refrigeration under different working conditions. The thermal management system is connected to a first adsorption bed and a second adsorption bed respectively, and includes: a first stop valve, a second stop valve, a third stop valve, a fourth stop valve, a compressor, a condenser, an evaporator and a throttle valve, wherein: the condenser includes a first port and a second port, the first port is connected to the outlet of the first adsorption bed through the first stop valve, and is connected to the outlet of the compressor, the second port is connected to the outlet of the second adsorption bed through the second stop valve, and is connected to the eighth port of the evaporator through the throttle valve; the evaporator includes a fifth port, a sixth port, a seventh port and an eighth port, the fifth port is connected to the inlet of the first adsorption bed through the third stop valve, the sixth port is connected to the inlet of the second adsorption bed through the fourth stop valve, and the seventh port is connected to the inlet of the compressor.

Description

Technical Field

[0001] The present application relates to the technical field of solid adsorption refrigeration, and in particular to a thermal management system and an adsorption bed refrigeration device. Background Art

[0002] Adsorption refrigeration technology uses the adsorption effect to reduce the pressure of liquid and evaporate it to achieve the refrigeration effect. At different temperatures, the adsorbent has different adsorption rates on the adsorbate. By periodically heating and cooling the adsorbent, the adsorbate gas is alternately desorbed and adsorbed, and the refrigeration effect is achieved by using the adsorption effect.

[0003] However, in the existing adsorption refrigeration devices, when the ambient temperature is high, the heat source temperature is low or there is no heat source, the adsorption refrigeration device cannot continuously cool. Therefore, a new type of adsorption refrigeration device is urgently needed to achieve continuous cooling when there is no heat source, the heat source temperature is low, and the working environment temperature is too high. Summary of the invention

[0004] The present application provides a thermal management system and an adsorption bed refrigeration device, which are used to meet refrigeration needs and achieve continuous refrigeration under different working conditions.

[0005] In the first aspect, the present application provides a thermal management system, which can be connected to the first adsorption bed and the second adsorption bed respectively, and use the waste heat generated during the periodic adsorption and desorption of the first adsorption bed and the second adsorption bed to perform continuous refrigeration to meet the refrigeration demand. Specifically, the thermal management system may include a first stop valve, a second stop valve, a third stop valve, a fourth stop valve, a compressor, a condenser, an evaporator and a throttle valve. Among them, the condenser includes a first port and a second port, the first port is connected to the outlet of the first adsorption bed through the first stop valve, and is connected to the outlet of the compressor, the second port is connected to the outlet of the second adsorption bed through the second stop valve, and is connected to the eighth port of the evaporator through the throttle valve; the evaporator includes a fifth port, a sixth port, a seventh port and a ninth port, the third port is connected to the inlet of the first adsorption bed through the third stop valve, the fourth port is connected to the inlet of the second adsorption bed through the fourth stop valve, and the fifth port is connected to the inlet of the compressor.

[0006] In the above scheme, when the adsorption bed is in a high-temperature condition or the temperature of the heat source received by the adsorption bed is too high, the high-pressure medium output by the compressor and the high-temperature medium output by the first stop valve can be exchanged with the condenser and the evaporator respectively, so as to realize the compressor supplementary cooling and ensure that the thermal management system can continue to refrigerate. In addition, according to the working conditions of the thermal management and the temperature of the medium flowing in the current thermal management system, the states of multiple stop valves in the thermal management system can be adjusted to adjust the refrigeration demand of the thermal management system to meet the refrigeration requirements under various working conditions.

[0007] In a possible implementation, the thermal management system further includes a fifth stop valve, and the seventh port of the evaporator is connected to the inlet of the compressor through the fifth stop valve. The above scheme can control the connection between the compressor and the evaporator, and control the connection between the compressor and the condenser by opening and closing the fifth stop valve. Therefore, the thermal management system can control the compressor to perform supplementary cooling by controlling the opening of the fifth stop valve, thereby achieving continuous cooling under high temperature conditions.

[0008] In a possible implementation, the thermal management system further includes a sixth shut-off valve, and the throttle valve is connected to the eighth port via the sixth shut-off valve. In the above solution, the connection between the throttle valve and the evaporator and the connection between the throttle valve and the condenser can be controlled by opening and closing the fifth shut-off valve.

[0009] In a possible implementation, the condenser further includes a first flow channel and a second flow channel that are isolated and can perform heat exchange. The first interface of the first flow channel is connected to the first port, and the second interface of the first flow channel is connected to the second port; the first interface and the second interface of the second flow channel are connected to an external cold source. In the present application, the condenser can adopt a double-channel heat exchange structure, and the two channels of the double-channel heat exchanger are isolated and arranged in thermal contact. One channel can be used to circulate hot medium, and the other channel can be used to circulate cold medium, so that heat exchange can be performed during the flow of hot and cold media.

[0010] In a possible implementation, the evaporator also includes a third channel and a fourth channel that are isolated and can perform heat exchange. The first interface of the third channel is connected to the third port, the second interface of the third channel is connected to the fourth port, the third interface of the third channel is connected to the fifth port, and the fourth interface of the third channel is connected to the sixth port; the first interface and the second interface of the fourth channel are connected to an external heat source. In the present application, the evaporator can adopt a dual-channel heat exchange structure, in which the two channels of the dual-channel heat exchanger are isolated and arranged in thermal contact, one channel can be used to circulate hot medium, and the other channel can be used to circulate cold medium, so that heat exchange can be performed during the flow of hot and cold media.

[0011] In a possible implementation, the compressor is an integrated compression and expansion machine.

[0012] In one possible implementation, when the thermal management system operates in the first mode, if the first adsorption bed operates in the desorption state and the second adsorption bed operates in the adsorption state, the first stop valve, the fourth stop valve and the sixth stop valve are opened, and the second stop valve, the third stop valve and the fifth stop valve are closed; or, if the first adsorption bed operates in the adsorption state and the second adsorption bed operates in the desorption state, the second stop valve, the third stop valve and the sixth stop valve are opened, and the first stop valve, the fourth stop valve and the fifth stop valve are closed.

[0013] In the above scheme, when the adsorption medium output by the adsorption bed can meet the refrigeration demand by only exchanging heat with the condenser and evaporator, the fifth stop valve can be controlled to open so that the adsorption medium passes through the condenser, throttle valve and evaporator in sequence to complete waste heat recovery and meet the refrigeration demand.

[0014] In one possible implementation, when the thermal management system operates in the second mode, if the first adsorption bed operates in the desorption state and the second adsorption bed operates in the adsorption state, the first stop valve, the fourth stop valve, the fifth stop valve and the sixth stop valve are opened, and the second stop valve and the third stop valve are closed; or, if the first adsorption bed operates in the adsorption state and the second adsorption bed operates in the desorption state, the second stop valve, the third stop valve, the fifth stop valve and the sixth stop valve are opened, and the first stop valve and the fourth stop valve are closed.

[0015] In the above scheme, when the temperature of the heat source received by the adsorption bed is high or it is in a high-temperature working environment, resulting in insufficient cooling capacity, in order to maintain continuous cooling, the adsorption medium can be controlled to circulate in the compressor. At this time, the medium passing through the condenser and the evaporator includes not only the high-temperature gaseous adsorption medium output by the first stop valve, but also the high-pressure adsorption medium output by the compressor. The two media are mixed and heat exchanged with the condenser and the evaporator, that is, the high-pressure adsorption medium is output by the compressor to supplement cooling, thereby achieving continuous refrigeration under high-temperature conditions.

[0016] In one possible implementation, when the thermal management system operates in the third mode, if the first adsorption bed operates in the desorption state and the second adsorption bed operates in the adsorption state, the first stop valve, the fourth stop valve and the fifth stop valve are opened, the second stop valve, the third stop valve and the sixth stop valve are closed, and the evaporator and the condenser stop working; or, if the first adsorption bed operates in the adsorption state and the second adsorption bed operates in the desorption state, the second stop valve, the third stop valve and the fifth stop valve are opened, the first stop valve, the fourth stop valve and the sixth stop valve are closed, and the evaporator and the condenser stop working; wherein, the compressor operates in the expansion mode.

[0017] In the above scheme, when the working temperature is low and there is no refrigeration demand, the condenser and evaporator can be controlled to stop working, and the compressor can be controlled to work in expansion mode. At this time, the evaporator and condenser are only used for adsorption medium transmission. On the basis of periodic adsorption and desorption of the first adsorption bed and the second adsorption bed, the high-temperature gaseous adsorption medium can be used to drive the compressor to generate electricity, which can effectively avoid the waste of waste heat.

[0018] In a possible implementation, when the thermal management system operates in the fourth mode, the fifth stop valve and the sixth stop valve are opened, and the first stop valve, the second stop valve, the third stop valve, and the fourth stop valve are closed.

[0019] In the above scheme, when the adsorption bed fails to work normally, the medium can be controlled to circulate in the evaporator, condenser and compressor to meet the refrigeration demand.

[0020] In a second aspect, the present application provides an adsorption bed refrigeration device, which includes a first adsorption bed, a second adsorption bed and a thermal management system as provided in the first aspect of the present application and any possible design.

[0021] For the technical effects that can be achieved in the above-mentioned second aspect, please refer to the technical effect description of the corresponding scheme in the above-mentioned first aspect, and no further details will be given here. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of a thermal management system provided in an embodiment of the present application Figure 1 ;

[0023] Figure 2 A schematic diagram of a thermal management system provided in an embodiment of the present application Figure 2 ;

[0024] Figure 3 A schematic diagram of the flow direction of an adsorption medium provided in an embodiment of the present application Figure 1 ;

[0025] Figure 4 A schematic diagram of the flow direction of an adsorption medium provided in an embodiment of the present application Figure 2 ;

[0026] Figure 5 A schematic diagram of the flow direction of an adsorption medium provided in an embodiment of the present application Figure 3 ;

[0027] Figure 6 A schematic diagram of the flow direction of an adsorption medium provided in an embodiment of the present application Figure 4 ;

[0028] Figure 7 A schematic diagram of the flow direction of an adsorption medium provided in an embodiment of the present application Figure 5 ;

[0029] Figure 8 A schematic diagram of the flow direction of an adsorption medium provided in an embodiment of the present application Figure 6 ;

[0030] Fig. 9 A schematic diagram of the flow direction of an adsorption medium provided in an embodiment of the present application Figure 7 .

[0031] Figure numerals: 1-first adsorption bed; 2-second adsorption bed; 3-first stop valve; 4-second stop valve; 5-third stop valve; 6-fourth stop valve; 7-compressor; 8-condenser; 9-evaporator; 10-throttle valve; 11-fifth stop valve; 12-sixth stop valve. DETAILED DESCRIPTION

[0032] 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 in conjunction with the accompanying drawings.

[0033] The terms used in the following embodiments are only for the purpose of describing specific embodiments and are not intended to be limiting of the present application. As used in the specification and appended claims of the present application, the singular expressions "a", "an", "above", "the" and "this" are intended to also include expressions such as "one or more", unless there is a clear contrary indication in the context.

[0034] References to "one embodiment" or "a specific embodiment" described in this specification mean that one or more embodiments of the present application include a particular feature, structure or characteristic described in conjunction with the embodiment. The terms "include", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized.

[0035] In order to facilitate understanding of the thermal management system and adsorption bed refrigeration equipment provided in the embodiments of the present application, the application scenarios of the thermal management system are first introduced below.

[0036] The thermal management system provided in the embodiment of the present application can be applied to an adsorption bed device and recover the waste heat generated by the adsorption bed.

[0037] With the intensification of energy crisis and environmental pollution, energy-saving and environmentally friendly products have received attention and favor from the society. The adsorption refrigeration device is a thermodynamic cycle constructed based on the adsorption process and phase change process. It uses heat drive to achieve the refrigeration effect through the conversion of thermal energy, adsorption potential energy and phase change potential energy. The working fluid used in the adsorption refrigeration device is natural material, and can be well combined with occasions such as waste heat recovery. Therefore, it is a green, environmentally friendly and energy-saving product.

[0038] However, in the existing adsorption refrigeration device, if the temperature of the heat source received by the adsorption bed is high or the working environment temperature of the adsorption bed refrigeration equipment is too high, the refrigeration capacity will not be able to meet the demand and continuous refrigeration will not be possible.

[0039] In view of this, an embodiment of the present application provides a thermal management system and an adsorption bed refrigeration device for continuous refrigeration to meet refrigeration needs.

[0040] See also Figure 1FIG. 1 is a schematic diagram of a thermal management system provided in an embodiment of the present application. Figure 1 As shown, the thermal management system is connected to the first adsorption bed 1 and the second adsorption bed 2 respectively. The first adsorption bed 1 and the second adsorption bed 2 are provided with adsorption medium. The thermal management system realizes continuous refrigeration by using the adsorption medium outputted during the working process of the adsorption bed.

[0041] See also Figure 1 As shown, the thermal management system mainly includes: a first stop valve 3, a second stop valve 4, a third stop valve 5, a fourth stop valve 6, a compressor 7, a condenser 8, an evaporator 9 and a throttle valve 10.

[0042] See also Figure 1 As shown, the condenser 8 includes a first port, a second port, a third port and a fourth port, the first port is connected to the outlet of the first adsorption bed 1 through the first stop valve 3, the second port is connected to the outlet of the compressor 7, the third port is connected to the outlet of the second adsorption bed 2 through the second stop valve 4, and the fourth port is connected to the eighth port of the evaporator 9 through the throttle valve 10. The evaporator 9 includes a fifth port, a sixth port, a seventh port and an eighth port, the fifth port is connected to the inlet of the first adsorption bed 1 through the third stop valve 5, the sixth port is connected to the inlet of the second adsorption bed 2 through the fourth stop valve 6, and the seventh port is connected to the inlet of the compressor 7.

[0043] Among them, the inlet of the throttle valve 10 is connected to the fourth port of the condenser 8, and the outlet of the throttle valve 10 is connected to the eighth port of the evaporator 9. The compressor 7 is an expansion-compression integrated machine, and the compressor 7 can work in an expansion mode or a compression mode. When the compressor 7 works in the compression mode, the fifth stop valve 11 is connected to the inlet of the compressor 7, and the outlet of the compressor 7 is connected to the seventh port of the condenser 8. When the compressor 7 works in the expansion mode, the inlet of the compressor 7 is connected to the seventh port of the condenser 8, and the outlet of the compressor 7 is connected to the fifth stop valve 11.

[0044] See also Figure 2 As shown, in order to control the flow direction of the adsorption medium in the thermal management system, the thermal management system provided in the embodiment of the present application also includes a fifth stop valve 11 connected in series with the compressor 7 and a sixth stop valve 12 connected in series with the throttle valve 10. Among them, the seventh port of the evaporator 9 is connected to the inlet of the compressor 7 through the fifth stop valve 11, and the throttle valve 10 is connected to the eighth port through the sixth stop valve 12.

[0045] In this embodiment, the condenser 8 and the evaporator 9 in the thermal management system are both dual-channel heat exchange devices. Two isolated and thermally conductive channels are provided in the dual-channel heat exchanger. One channel can be used to circulate hot medium, and the other channel can be used to circulate cold medium. In this way, heat exchange can be performed during the flow of hot and cold media.

[0046] In the present application, the condenser 8 includes a first flow channel and a second flow channel that are isolated and can perform heat exchange. Among them, the first interface of the first flow channel is connected to the first port, the second interface of the first flow channel is connected to the second port, the third interface of the first flow channel is connected to the third port, and the fourth interface of the first flow channel is connected to the fourth port; the first interface and the second interface of the second flow channel are both connected to an external cold source, and a refrigerant that can perform heat exchange is arranged in the second flow channel. The evaporator 9 includes a third flow channel and a fourth flow channel that are isolated and can perform heat exchange. Among them, the first interface of the third flow channel is connected to the fifth port, the second interface of the third flow channel is connected to the sixth port, the third interface of the third flow channel is connected to the seventh port, and the fourth interface of the third flow channel is connected to the eighth port; the first interface and the second interface of the fourth flow channel are connected to an external heat source, and an evaporative refrigerant that can perform heat exchange is arranged in the fourth flow channel.

[0047] In a possible implementation, the condenser 8 further includes a first cavity, a first coil and a second coil. Specifically, the first interface of the first coil is connected to the first stop valve 3 and the outlet of the compressor 7, and the second interface of the first coil is connected to the second interface of the second coil; the first interface of the second coil is connected to the second stop valve 4. The connection between the first coil and the second coil is connected to the throttle valve 10. The first coil and the second coil are both arranged in the first cavity.

[0048] In specific implementation, the first coil and the second coil constitute a first flow channel, the first flow channel and the second flow channel are isolated and arranged in thermal contact, the first flow channel can be used to circulate adsorption medium, and the second flow channel is used to flow refrigerant, and heat exchange can be performed during the flow of these two media. It should be understood that the embodiment of the present application takes the condenser 8 as a shell and tube heat exchanger as an example for explanation, and in actual use, the condenser includes but is not limited to a plate heat exchanger, a shell and tube heat exchanger, etc., and the present application does not limit this.

[0049] In one example, the condenser 8 includes a first three-way pipe and a second three-way pipe, the first interface of the first coil is connected to the first stop valve 3 and the compressor 7 through the first three-way pipe, the second interface of the first coil, the second interface of the second coil and the throttle valve 10 are connected through the second three-way pipe, that is, the first port of the condenser 8 is connected to the second port through the first three-way pipe.

[0050] In another example, the condenser 8 includes a first three-way valve and a second three-way valve. The three valve ports of the first three-way valve can be connected to the first stop valve 3, the outlet of the compressor 7 and the first interface of the first coil, respectively, to control the connection between the first stop valve 3 and the first coil, and to control the connection between the compressor 7 and the first coil, that is, the first port of the condenser 8 is connected to the second port through the first three-way valve. The three valve ports of the second three-way valve can be connected to the second interface of the first coil, the second interface of the second coil and the inlet of the throttle valve 10, respectively, to control the connection between the first coil and the throttle valve 10, and to control the connection between the second coil and the throttle valve 10.

[0051] It should be noted that when the condenser 8 performs heat exchange with other equipment, phase change heat exchange can be performed, that is, the high-temperature gaseous adsorption medium is cooled and liquefied. The following process is explained by cooling and liquefying other adsorption media output by other equipment when the condenser 8 performs heat exchange with other equipment.

[0052] In the present application, the evaporator 9 also includes a second cavity, a third coil, a fourth coil and a fifth coil. The first interface of the third coil is connected to the third stop valve 5, and the second interface of the third coil is respectively connected to the first interface of the fifth coil and the fifth stop valve 11; the first interface of the fourth coil is connected to the fourth stop valve 6, and the second interface of the fourth coil is respectively connected to the sixth stop valve 12 and the second interface of the fifth coil. The third coil, the fourth coil and the fifth coil are all arranged in the second cavity.

[0053] In specific implementation, the third coil, the fourth coil and the fifth coil constitute the third flow channel, the third flow channel and the fourth flow channel are isolated and arranged in thermal contact, the third flow channel can be used to circulate the adsorption medium, and the fourth flow channel is used to flow the evaporative refrigerant, and heat exchange can be performed during the flow of these two media. It should be understood that the embodiment of the present application takes the evaporator 9 as an example of a shell and tube heat exchanger. In actual use, the evaporator 9 includes but is not limited to a plate heat exchanger, a shell and tube heat exchanger, etc., and the present application does not limit this.

[0054] In one example, the evaporator 9 includes a third three-way pipe and a fourth three-way pipe. The second interface of the third coil, the first interface of the fifth coil and the fifth stop valve 11 are connected through the third three-way pipe. The second interface of the fourth coil, the second interface of the fifth coil and the sixth stop valve 12 are connected through the fourth three-way pipe.

[0055] In another example, the evaporator 9 includes a third three-way valve and a fourth three-way valve, wherein the three valve ports of the third three-way valve can be connected to the second interface of the third coil, the first interface of the fifth coil and the fifth stop valve 11, respectively, for controlling the connection between the fifth stop valve 11 and the third coil, and the connection between the fifth stop valve 11 and the fifth coil. The three valve ports of the fourth three-way valve can be connected to the second interface of the fourth coil, the second interface of the fifth coil and the sixth stop valve 12, respectively, for controlling the connection between the sixth stop valve 12 and the fourth coil, and the connection between the sixth stop valve 12 and the fifth coil.

[0056] It should be noted that the evaporator 9 can perform phase change heat exchange when exchanging heat with other equipment, that is, vaporize the liquid adsorption medium. The following process is explained by taking the adsorption medium output by other equipment as being heated and vaporized when the evaporator 9 performs heat exchange with other equipment.

[0057] In an embodiment of the present application, the operating mode of the thermal management system can be selected according to the operating conditions of the adsorption bed and the thermal management system. The operating conditions of the thermal management system may include adsorption refrigeration mode, adsorption refrigeration mode + compressor supplementary cooling mode, adsorption power generation mode and compressor refrigeration mode.

[0058] The working process of the thermal management system provided in the embodiment of the present application is explained below in conjunction with the embodiments.

[0059] See also Figure 2 As shown, when the cooling capacity of the thermal management system can meet the requirements, the thermal management system can be controlled to work in the first working mode, that is, the adsorption refrigeration mode. Specifically, if the first adsorption bed 1 is connected to a heat source and the second adsorption bed 2 is connected to a cold source, that is, the first adsorption bed 1 works in a desorption mode and the second adsorption bed 2 works in an adsorption mode, the first stop valve 3, the fourth stop valve 6 and the sixth stop valve 12 can be controlled to be opened, and the second stop valve 4, the third stop valve 5 and the fifth stop valve 11 can be closed, and the adsorption medium flows in the condenser 8, the throttle valve 10 and the evaporator 9. At this time, the first port of the condenser 8 is connected to the high-temperature gaseous adsorption medium output from the first adsorption bed 1 through the first stop valve 3, the fourth port of the condenser 8 and the inlet of the throttle valve 10 are opened, the high-temperature gaseous adsorption medium exchanges heat with the refrigerant in the condenser 8, the liquid adsorption medium cooled after the heat exchange flows to the evaporator 9 through the throttle valve 10, and exchanges heat with the evaporating refrigerant in the evaporator 9, the adsorption medium after the heat exchange flows to the inlet of the second adsorption bed 2 through the fourth stop valve 6, wherein the flow direction of the adsorption medium can be referred to. Figure 3As shown. If the first adsorption bed 1 is connected to a cold source and the second adsorption bed 2 is connected to a heat source, that is, the first adsorption bed 1 works in an adsorption mode and the second adsorption bed 2 works in a desorption mode, the second stop valve 4, the third stop valve 5 and the sixth stop valve 12 can be controlled to open, and the first stop valve 3, the fourth stop valve 6 and the fifth stop valve 11 can be closed, and the adsorption medium flows in the condenser 8, the throttle valve 10 and the evaporator 9. At this time, the second port of the condenser 8 is connected to the high-temperature gaseous adsorption medium output from the second adsorption bed 2 through the second stop valve 4, and the fourth port of the condenser 8 is connected to the inlet of the throttle valve 10. The high-temperature gaseous adsorption medium exchanges heat with the refrigerant in the condenser 8. The liquid adsorption medium that has been cooled after the heat exchange flows to the evaporator 9 through the throttle valve 10, and exchanges heat with the evaporated refrigerant in the evaporator 9. The adsorption medium after the heat exchange flows to the inlet of the first adsorption bed 1 through the third stop valve 5, and the flow direction of the adsorption medium can be referred to. Figure 4 shown.

[0060] Continuing to refer to FIG. 2 , when the thermal management system is in a high temperature condition or the temperature of the adsorption bed receiving the heat source is too high, resulting in insufficient cooling capacity in the adsorption refrigeration mode, the thermal management system can be controlled to operate in the second operating mode, that is, the adsorption refrigeration mode + compressor supplementary cooling mode. Specifically, if the first adsorption bed 1 is connected to the heat source, the second adsorption bed 2 is connected to the cold source, and the compressor 7 operates in the compression mode, the first stop valve 3, the fourth stop valve 6, the fifth stop valve 11 and the sixth stop valve 12 are controlled to be opened, and the second stop valve 4 and the third stop valve 5 are controlled to be closed, and the adsorption medium flows in the condenser 8, the throttle valve 10 and the evaporator 9, and in the evaporator 8, the throttle valve 10, the evaporator 9 and the compressor 7. At this time, the first port of the condenser 8 is connected to the high-temperature gaseous adsorption medium output by the first adsorption bed 1 through the first stop valve 3, the third port of the condenser 8 receives the high-pressure adsorption medium output by the compressor 7, and the fourth port of the condenser 8 is connected to the inlet of the throttle valve 10. The high-temperature gaseous adsorption medium and the high-pressure adsorption medium exchange heat with the refrigerant in the condenser 8. The liquid adsorption medium cooled after the heat exchange flows to the evaporator 9 through the throttle valve 10 and the sixth stop valve 12, and exchanges heat with the evaporating refrigerant in the evaporator 9. A part of the adsorption medium after the heat exchange flows to the inlet of the second adsorption bed 2 through the fourth stop valve 6, and the other part is converted into a high-pressure adsorption medium through the fifth stop valve 11 and the compressor 7 and then output to the third port of the condenser 8. The flow direction of the adsorption medium can be seen in Figure 5As shown. If the first adsorption bed 1 is connected to a cold source, the second adsorption bed 2 is connected to a heat source, and the compressor 7 works in a compression mode, the second stop valve 4, the third stop valve 5, the fifth stop valve 11 and the sixth stop valve 12 are controlled to be opened, and the first stop valve 3 and the fourth stop valve 6 are controlled to be closed. At this time, the second port of the condenser 8 is connected to the high-temperature gaseous adsorption medium output by the second adsorption bed 2 through the second stop valve 4, and the third interface of the condenser 8 receives the high-pressure adsorption medium output by the compressor 7. The fourth port of the condenser 8 is connected to the inlet of the throttle valve 10, and the high-temperature gaseous adsorption medium and the high-pressure adsorption medium perform heat exchange with the refrigerant in the condenser 8. The liquid adsorption medium cooled after the heat exchange flows to the evaporator 9 through the throttle valve 10 and the sixth stop valve 12, and performs heat exchange with the evaporating refrigerant in the evaporator 9. A part of the adsorption medium after the heat exchange flows to the inlet of the first adsorption bed 1 through the third stop valve 5, and the other part is converted into a high-pressure adsorption medium through the fifth stop valve 11 and the compressor 7 and then output to the third port of the condenser 8. The flow direction of the adsorption medium can be referred to. Figure 6 shown.

[0061] It should be understood that in the above-mentioned working mode of the present application, the adsorption medium passing through the condenser 8 and the evaporator 9 includes not only the high-temperature gaseous adsorption medium output by the first stop valve 3, but also the high-pressure adsorption medium output by the compressor 7. After the two media are mixed, they are heat exchanged with the condenser 8 and the evaporator 9 in turn, that is, supplementary cooling is performed through the high-pressure adsorption medium output by the compressor 7, thereby realizing continuous refrigeration under high temperature conditions.

[0062] Continue to see Figure 2 As shown, when the working environment temperature is low and there is no refrigeration demand, the thermal management system operates in the third working mode, that is, the adsorption power generation mode. Specifically, since there is no refrigeration demand under the current working condition, the condenser 8 and the evaporator 9 can be controlled to stop the heat exchange operation and only perform the adsorption medium transmission function. If the first adsorption bed 1 is connected to the heat source, the second adsorption bed is connected to the cold source, and the compressor 7 operates in the expansion mode, the first stop valve 3, the fourth stop valve 6 and the fifth stop valve 11 are controlled to be opened, and the second stop valve 4, the third stop valve 4 and the sixth stop valve 12 are controlled to be closed. At this time, the adsorption medium only flows in the compressor 7, and the inlet of the compressor 7 is connected to the adsorption medium through the first stop valve 3, the first port of the condenser 8 and the third port of the condenser 8, and the adsorption medium is depressurized. After the depressurization treatment, the cooled adsorption medium flows to the inlet of the second adsorption bed 2 through the fifth stop valve 11, the third port of the evaporator, the second port of the evaporator and the fourth stop valve 6. The flow direction of the adsorption medium can be seen in Figure 7As shown. If the first adsorption bed 1 is connected to a cold source, the second adsorption bed 2 is connected to a heat source, and the compressor 7 works in an expansion mode, the second stop valve 4, the third stop valve 5 and the fifth stop valve 11 can be controlled to be opened, and the first stop valve 3, the fourth stop valve 6 and the sixth stop valve 12 can be controlled to be closed. At this time, the inlet of the compressor 7 is connected to the adsorption medium through the second stop valve 4, the second port of the condenser 8 and the third port of the condenser 8, and the adsorption medium is depressurized. After the depressurization treatment, the cooled adsorption medium flows to the inlet of the first adsorption bed 1 through the fifth stop valve 11, the third port of the evaporator, the first port of the evaporator and the third stop valve 5. The flow direction of the adsorption medium can be seen in Figure 8 shown.

[0063] In specific implementation, since there is no refrigeration demand under the current working conditions, the condenser 8 can be disconnected from the external cold source, and the evaporator 9 can be disconnected from the external heat source, so that the condenser 8 and the evaporator 9 are controlled to stop exchanging heat with the adsorption medium flowing through.

[0064] It should be understood that since there is no refrigeration demand under the current operating conditions, the high-temperature gaseous adsorption medium output by the adsorption beds is used to drive the compressor 7 to generate electricity based on the periodic adsorption and desorption of the first adsorption bed 1 and the second adsorption bed 2, thereby effectively avoiding the waste of waste heat.

[0065] Continue to see Figure 2 As shown, when the adsorption bed equipment cannot work normally, the thermal management system works in the compressor refrigeration mode. Specifically, the compressor 7 works in the expansion mode, and the fifth stop valve 11 and the sixth stop valve 12 are controlled to be open. At this time, the adsorption medium only flows in the compressor 7, and the inlet of the compressor 7 is connected to the high-temperature adsorption medium output from the outlet of the first adsorption bed 1 through the third port of the condenser 8, and the received high-temperature adsorption medium is depressurized. The cooled adsorption medium after the depressurization flows to the evaporator 9 through the fifth stop valve 11, and exchanges heat with the evaporating refrigerant in the evaporator. The adsorption medium after the heat exchange flows to the condenser 8 through the sixth stop valve 12 and the throttle valve 11, and exchanges heat with the refrigerant in the condenser, and the adsorption medium after the heat exchange flows to the inlet of the compressor 7 through the third port of the condenser 8. Among them, the flow direction of the adsorption medium can be referred to. Fig. 9 shown.

[0066] It should be understood that compared with the existing adsorption bed waste heat recovery system, the existing adsorption bed waste heat recovery system has insufficient cooling capacity under high temperature conditions, and therefore cannot achieve continuous cooling. The thermal management system provided in the embodiment of the present application has an additional compression-expansion integrated machine, which can use a compressor for supplementary cooling under high temperature conditions, so that the thermal management system can achieve continuous cooling. In addition, the thermal management system provided in the embodiment of the present application can control the condenser and evaporator to stop working when there is no refrigeration demand, and use the high-temperature other adsorption media output by the adsorption bed to drive the compressor to generate electricity, thereby effectively avoiding the waste of waste heat, that is, the working mode can be adjusted according to the working conditions of the adsorption bed and the thermal management system, which is conducive to improving the recovery rate of waste heat.

[0067] In the present application, the operating mode of the thermal management system can be switched by controlling the opening or closing of the stop valve according to the operating conditions of the adsorption bed and the operating conditions of the thermal management system, thereby meeting the refrigeration demand.

[0068] In one example, the multiple stop valves in the thermal management system are electronic control valves, and the controller can control the opening and closing of the stop valves according to the working conditions of the adsorption bed and the thermal management system, thereby controlling the working mode of the thermal management system. The controller can be set inside the thermal management system or in other devices.

[0069] Based on the foregoing description, an embodiment of the present application further provides an adsorption bed refrigeration device, which includes a first adsorption bed, a second adsorption bed and the foregoing thermal management system.

[0070] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A thermal management system, wherein the thermal management system is connected to a first adsorption bed and a second adsorption bed respectively, characterized in that: include: A first stop valve, a second stop valve, a third stop valve, a fourth stop valve, a compressor, a condenser, an evaporator and a throttle valve, wherein: The condenser comprises a first port, a second port, a third port and a fourth port, the first port being connected to the outlet of the first adsorption bed through a first stop valve and to the outlet of the compressor, the second port being connected to the outlet of the second adsorption bed through the second stop valve and to the eighth port of the evaporator through the throttle valve, the third port being connected to the outlet of the second adsorption bed through the second stop valve, and the fourth port being connected to the eighth port of the evaporator through the throttle valve; The evaporator comprises a fifth port, a sixth port, a seventh port and the eighth port, the fifth port is connected to the inlet of the first adsorption bed through the third stop valve, the sixth port is connected to the inlet of the second adsorption bed through the fourth stop valve, and the seventh port is connected to the inlet of the compressor; The compressor is a compression-expansion integrated machine. When the compressor works in an expansion mode, the evaporator and the condenser stop exchanging heat.

2. The thermal management system according to claim 1, characterized in that: The thermal management system further includes a fifth stop valve, and the seventh port of the evaporator is connected to the inlet of the compressor through the fifth stop valve.

3. The thermal management system according to claim 2, characterized in that: The thermal management system further includes a sixth shut-off valve, and the throttle valve is connected to the sixth port through the sixth shut-off valve.

4. The thermal management system according to any one of claims 1 to 3, characterized in that: The condenser also includes a first flow channel and a second flow channel that are isolated and capable of heat exchange; The first interface of the first flow channel is connected to the first port, and the second interface of the first flow channel is connected to the second port; The first interface and the second interface of the second flow channel are connected to an external cold source.

5. The thermal management system according to any one of claims 1 to 4, characterized in that: The evaporator further comprises a third flow channel and a fourth flow channel which are isolated from each other and can perform heat exchange; The first interface of the third flow channel is connected to the third port, the second interface of the third flow channel is connected to the fourth port, the third interface of the third flow channel is connected to the fifth port, and the fourth interface of the third flow channel is connected to the sixth port; The first interface and the second interface of the fourth flow channel are connected to an external heat source.

6. The thermal management system according to claim 3, characterized in that: When the thermal management system operates in the first mode, if the first adsorption bed operates in a desorption state and the second adsorption bed operates in an adsorption state, the first stop valve, the fourth stop valve and the sixth stop valve are opened, and the second stop valve, the third stop valve and the fifth stop valve are closed; or If the first adsorption bed operates in an adsorption state and the second adsorption bed operates in a desorption state, the second stop valve, the third stop valve and the sixth stop valve are opened, and the first stop valve, the fourth stop valve and the fifth stop valve are closed.

7. The thermal management system according to claim 3, characterized in that: When the thermal management system operates in the second mode, if the first adsorption bed operates in a desorption state and the second adsorption bed operates in an adsorption state, the first stop valve, the fourth stop valve, the fifth stop valve and the sixth stop valve are opened, and the second stop valve and the third stop valve are closed; or If the first adsorption bed operates in an adsorption state and the second adsorption bed operates in a desorption state, the second stop valve, the third stop valve, the fifth stop valve and the sixth stop valve are opened, and the first stop valve and the fourth stop valve are closed.

8. The thermal management system according to claim 3, characterized in that: When the thermal management system operates in the third mode, if the first adsorption bed operates in a desorption state and the second adsorption bed operates in an adsorption state, the first stop valve, the fourth stop valve and the fifth stop valve are opened, and the second stop valve, the third stop valve and the sixth stop valve are closed; or If the first adsorption bed operates in the adsorption state and the second adsorption bed operates in the desorption state, the second stop valve, the third stop valve and the fifth stop valve are opened, and the first stop valve, the fourth stop valve and the sixth stop valve are closed; wherein the compressor operates in the expansion mode.

9. The thermal management system according to claim 3, characterized in that: When the thermal management system operates in the fourth mode, the fifth stop valve and the sixth stop valve are opened, and the first stop valve, the second stop valve, the third stop valve, and the fourth stop valve are closed.

10. An adsorption bed refrigeration device, characterized in that: The invention comprises a first adsorption bed, a second adsorption bed and a thermal management system as claimed in any one of claims 1 to 9.

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