A continuous defrosting air source heat pump and a method for operating the same

Abstract

The application discloses a kind of continuously defrosting heating air source heat pump and its operating method, it is related to air source heat pump technical field, it includes compressor, reactor group, liquid heat exchanger, gas heat exchanger, throttling and gas-liquid separator, indoor heat exchanger and outdoor heat exchanger, the reactor group includes at least one first reactor and at least one second reactor.The application is simultaneously carried out high pressure adsorption and low pressure desorption by reactor group to make indoor heat exchanger and outdoor heat exchanger simultaneously exothermic, so that outdoor defrosting and indoor heating can be realized simultaneously, and, using the heat absorption and release characteristics of adsorbent, cooperate with reactor group to improve refrigeration efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of air source heat pump technology, and particularly relates to an air source heat pump capable of continuous defrosting and heating and a running method thereof. BACKGROUND

[0002] For the air source heat pump heating in winter low temperature and high humidity area, the evaporator is easy to frost, which causes the heat pump system to be unable to normally run. After the evaporator is frosted, two ways of electric heating auxiliary defrosting and heat pump defrosting are usually adopted. The heat pump defrosting has low power consumption, but the defrosting speed is slower than that of the electric auxiliary defrosting. The principle of the traditional heat pump defrosting is that the system utilizes a four-way reversing valve to switch the functions of the original outdoor evaporator and the indoor condenser with each other, so that the heat pump cycle is realized, and the outdoor heat exchanger defrosting is completed. This defrosting method has a disadvantage that the defrosting and heating cannot be simultaneously realized, the defrosting time is too long, the overall performance efficiency is low, and the service life of the four-way reversing valve is short due to frequent switching. The heat gas bypass defrosting method currently adopted has problems of long defrosting time, high load operation of the compressor during defrosting and liquid compression of the compressor. SUMMARY

[0003] In view of the problems that the defrosting and heating cannot be simultaneously realized and the refrigeration efficiency is low in the prior art, the present application provides an air source heat pump capable of continuous defrosting and heating and a running method thereof, which can simultaneously realize outdoor defrosting and indoor heating and has high refrigeration efficiency.

[0004] To achieve the above object, the present application can adopt the following technical solutions:

[0005] In a first aspect, the present application provides an air source heat pump capable of continuous defrosting and heating, which comprises:

[0006] a compressor, a reactor group, a liquid heat exchanger, a gas heat exchanger, a throttling and gas-liquid separator, an indoor heat exchanger and an outdoor heat exchanger, wherein the reactor group comprises at least one first reactor and at least one second reactor;

[0007] The outlet of the compressor is connected to the first interface of the liquid heat exchanger through a pipeline, the second interface of the liquid heat exchanger is connected to the first interface of the second reactor through a pipeline, the second interface of the second reactor is connected to the inlet of the compressor through a pipeline, the third interface of the second reactor is connected to the third interface of the liquid heat exchanger through a pipeline, the second interface of the outdoor heat exchanger is connected to the first interface of the throttling and gas-liquid separator through a pipeline, the second interface of the throttling and gas-liquid separator is connected to the fourth interface of the second reactor and the first interface of the first reactor through pipelines respectively, the third interface of the throttling and gas-liquid separator is connected to the first interface of the indoor heat exchanger through a pipeline, the second interface of the first reactor is connected to the inlet of the compressor through a pipeline, the third interface of the first reactor is connected to the first interface of the gas heat exchanger through a pipeline, the second interface of the gas heat exchanger is connected to the fourth interface of the first reactor through a pipeline, the third interface of the gas heat exchanger is connected to the third interface of the outdoor heat exchanger through a pipeline, the fourth interface of the liquid heat exchanger, the first interface of the outdoor heat exchanger, the second interface of the indoor heat exchanger and the inlet of the compressor are connected through a pipeline, and the fourth interface of the gas heat exchanger, the fourth interface of the outdoor heat exchanger, the third interface and the fourth interface of the indoor heat exchanger are all connected to the atmosphere.

[0008] The air source heat pump capable of continuous defrosting and heating as above is further provided with a four-way valve on the pipeline between the fourth interface of the liquid heat exchanger, the first interface of the outdoor heat exchanger, the second interface of the indoor heat exchanger and the inlet of the compressor.

[0009] The air source heat pump capable of continuous defrosting and heating as above is further provided with a first valve on the pipeline between the second interface of the first reactor and the inlet of the compressor, a second valve on the pipeline between the second interface of the second reactor and the inlet of the compressor, a third valve on the pipeline between the second interface of the throttling and gas-liquid separator and the first interface of the first reactor, and a fourth valve on the pipeline between the second interface of the throttling and gas-liquid separator and the fourth interface of the second reactor.

[0010] The air source heat pump capable of continuous defrosting and heating as above is further provided with an adsorbent in the first reactor and the second reactor.

[0011] The air source heat pump capable of continuous defrosting and heating as above is further provided with a physical adsorbent and a chemical adsorbent, the physical adsorbent is one or a combination of activated carbon, zeolite, silica gel or organic metal framework material, and the chemical adsorbent is a metal salt.

[0012] In a second aspect, the application provides a method for operating a continuous defrosting and heating air source heat pump, which is based on the continuous defrosting and heating air source heat pump described above, and the operating mode specifically includes:

[0013] In the heating mode, the reactor group performs high-pressure adsorption and low-pressure desorption, the fluid after high-pressure adsorption enters the outdoor heat exchanger through the gas heat exchanger, and then enters the compressor together with the fluid after low-pressure desorption for compression, and finally enters the indoor heat exchanger through the liquid heater to release heat to indoor air.

[0014] In the cooling mode, the reactor group performs high-pressure adsorption and low-pressure desorption, the fluid after high-pressure adsorption enters the outdoor heat exchanger through the gas heat exchanger, and then enters the indoor heat exchanger to cool indoor air through throttling and a gas-liquid separator.

[0015] In the heating mode of the continuous defrosting and heating air source heat pump operating method described above, the fluid after entering the indoor heat exchanger also returns to the reactor group for circulation and re-enters the outdoor heat exchanger through throttling and a gas-liquid separator.

[0016] In the cooling mode of the continuous defrosting and heating air source heat pump operating method described above, the fluid after entering the indoor heat exchanger enters the compressor together with the fluid after low-pressure desorption for compression, and then enters the outdoor heat exchanger after the liquid heater.

[0017] In the continuous defrosting and heating air source heat pump operating method described above, the reactor group simultaneously performs high-pressure adsorption and low-pressure desorption, the first reactor performs high-pressure adsorption, and the second reactor performs low-pressure desorption.

[0018] In the continuous defrosting and heating air source heat pump operating method described above, when high-pressure adsorption is performed, the first valve is controlled to be in a closed state, and the third valve is controlled to be in an open state; when low-pressure desorption is performed, the second valve is controlled to be in an open state, and the fourth valve is controlled to be in a closed state.

[0019] Compared with the prior art, the application has the following beneficial effects:

[0020] 1. The application simultaneously releases heat from the indoor heat exchanger and the outdoor heat exchanger by simultaneously performing high-pressure adsorption and low-pressure desorption in the reactor group, thereby achieving outdoor defrosting and indoor heating at the same time.

[0021] 2. The application utilizes the heat absorption and release characteristics of the adsorbent to improve the refrigeration efficiency in cooperation with the reactor group. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiments. Obviously, the drawings described in the following are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained from these drawings without creative labor.

[0023] Figure 1 The schematic diagram of the air source heat pump in the embodiments of the present application;

[0024] Wherein: 1, compressor; 2, first reactor; 3, second reactor; 4, gas heat exchanger; 5, liquid heat exchanger; 6, indoor heat exchanger; 7, outdoor heat exchanger; 8, throttling and gas-liquid separator; 9, four-way valve; 10, first valve; 11, second valve; 12, third valve; 13, fourth valve; 101, outlet of compressor; 102, inlet of compressor; 201, first interface of first reactor; 202, second interface of first reactor; 203, third interface of first reactor; 204, fourth interface of first reactor; 301, first interface of second reactor; 302, second interface of second reactor; 303, third interface of second reactor; 304, fourth interface of second reactor; 401, first interface of gas heat exchanger; 402, second interface of gas heat exchanger; 403, third interface of gas heat exchanger; 404, fourth interface of gas heat exchanger; 501, first interface of liquid heat exchanger; 502, second interface of liquid heat exchanger; 503, third interface of liquid heat exchanger; 504, fourth interface of liquid heat exchanger; 601, first interface of indoor heat exchanger; 602, second interface of indoor heat exchanger; 603, third interface of indoor heat exchanger; 604, fourth interface of indoor heat exchanger; 701, first interface of outdoor heat exchanger; 702, second interface of outdoor heat exchanger; 703, third interface of outdoor heat exchanger; 704, fourth interface of outdoor heat exchanger; 801, first interface of throttling and gas-liquid separator; 802, second interface of throttling and gas-liquid separator; 803, third interface of throttling and gas-liquid separator. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained from these drawings without creative labor.

[0026] Embodiment:

[0027] It has to be understood that the terms "first", "second", etc. in the description and claims of the application and above-mentioned drawings are used to distinguish similar objects, and do not have to be necessarily used to describe a specific sequential or chronological order. It is to be understood that the data thus designated can be interchanged, where appropriate, so that the embodiments of the application described herein can be carried out in an order other than the one illustrated or described herein. Moreover, the terms "comprising" and "having" and any variations thereof, as used in the embodiments of the application, are intended to cover the non-exclusive inclusion, for example, a process, method, assembly, product or apparatus that includes a list of steps or elements, not necessarily limited to those steps or elements that are clearly listed, but can include other steps or elements not clearly listed or inherent to such processes, methods, products or apparatus.

[0028] It has to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used for the convenience of describing the application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0029] In the description of the application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited. In addition, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0030] In the present application, unless otherwise explicitly specified and limited, the "on" or "under" of the first feature to the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the "over", "above" and "on" of the first feature to the second feature can be that the first feature is directly above or obliquely above the second feature, or only means that the horizontal height of the first feature is higher than that of the second feature. The "under", "below" and "under" of the first feature to the second feature can be that the first feature is directly below or obliquely below the second feature, or only means that the horizontal height of the first feature is less than that of the second feature.

[0031] In a first aspect, the present application provides a continuous defrosting and heating air source heat pump, which comprises a compressor 1, a reactor group, a liquid heat exchanger 5, a gas heat exchanger 4, a throttling and gas-liquid separator 8, an indoor heat exchanger 6 and an outdoor heat exchanger 7, wherein the reactor group comprises at least one first reactor 2 and at least one second reactor 3. The outlet 101 of the compressor is connected to the first interface 501 of the liquid heat exchanger through a pipeline, the second interface 502 of the liquid heat exchanger is connected to the first interface 301 of the second reactor through a pipeline, the second interface 302 of the second reactor is connected to the inlet 102 of the compressor through a pipeline, the third interface 303 of the second reactor is connected to the third interface 503 of the liquid heat exchanger through a pipeline, the second interface 702 of the outdoor heat exchanger is connected to the first interface 801 of the throttling and gas-liquid separator through a pipeline, the second interface 802 of the throttling and gas-liquid separator is connected to the fourth interface 304 of the second reactor and the first interface 201 of the first reactor through a pipeline respectively, the third interface 803 of the throttling and gas-liquid separator is connected to the first interface 601 of the indoor heat exchanger through a pipeline, the second interface 202 of the first reactor is connected to the inlet 102 of the compressor through a pipeline, the third interface 203 of the first reactor is connected to the first interface 401 of the gas heat exchanger through a pipeline, the second interface 402 of the gas heat exchanger is connected to the fourth interface 204 of the first reactor through a pipeline, the third interface 403 of the gas heat exchanger is connected to the third interface 703 of the outdoor heat exchanger through a pipeline, the fourth interface 504 of the liquid heat exchanger, the first interface 701 of the outdoor heat exchanger, the second interface 602 of the indoor heat exchanger and the inlet 102 of the compressor are connected through a pipeline, and the fourth interface 404 of the gas heat exchanger, the fourth interface 704 of the outdoor heat exchanger, the third interface 603 and the fourth interface 604 of the indoor heat exchanger are all connected to the atmosphere.

[0032] In the above embodiment, the air source heat pump can realize heating indoors and defrosting outdoors in winter and refrigeration in summer through the circulation loop formed by the connection between the compressor, the reactor group, the indoor heat exchanger, the outdoor heat exchanger, the liquid heat exchanger and the gas heat exchanger, and the temperature of the fluid in the loop is raised or lowered.

[0033] As an optional implementation, in some embodiments, a four-way valve 9 is arranged on the pipeline between the fourth interface 504 of the liquid heat exchanger, the first interface 701 of the outdoor heat exchanger, the second interface 602 of the indoor heat exchanger, and the inlet 102 of the compressor. Further, a first valve 10 is arranged on the pipeline between the second interface 202 of the first reactor and the inlet 102 of the compressor, a second valve 11 is arranged on the pipeline between the second interface 302 of the second reactor and the inlet 102 of the compressor, a third valve 12 is arranged on the pipeline between the second interface 802 of the throttling and gas-liquid separator and the first interface 201 of the first reactor, and a fourth valve 13 is arranged on the pipeline between the second interface 802 of the throttling and gas-liquid separator and the fourth interface 304 of the second reactor.

[0034] In the above embodiments, the four-way valve is a control valve with four interfaces, which can divert fluid from one pipeline to multiple different pipelines, realize multi-way diversion function, and make the flow direction of the fluid more flexible. At the same time, the four-way valve can also transfer fluid from one pipeline to another pipeline, realize the change of flow direction, and thus realize the cooling and heating switching of the air source heat pump. The valve can control the flow and cut off the flow of fluid, and the air source heat pump can realize continuous defrosting and heating through the control of the four valves. In addition, the valve of the air source heat pump can include but is not limited to electric valve, manual valve, automatic regulating valve, etc.

[0035] As an optional implementation, in some embodiments, the first reactor 2 and the second reactor 3 are both provided with adsorbents. Further, the adsorbents include physical adsorbents and chemical adsorbents, the physical adsorbents are one or a combination of activated carbon, zeolite, silica gel, or organic metal framework material, and the chemical adsorbents are metal salts.

[0036] In the above embodiments, the air source heat pump utilizes the heat absorption and release characteristics of the adsorbents and cooperates with the reactors. Specifically, by absorbing the refrigerant vapor, the pressure in the reactor is reduced, and thus the adsorption refrigeration is realized. Moreover, the adsorbents in the present embodiment use physical adsorbents and chemical adsorbents for common adsorption, which greatly improves the adsorption efficiency. In addition, the use of physical adsorbents and chemical adsorbents can be adjusted according to actual conditions. Preferably, in the present embodiment, the physical adsorbents use one or a combination of activated carbon, zeolite, silica gel, or organic metal framework material, and the chemical adsorbents use metal salts.

[0037] As an optional implementation, in some embodiments, the throttling and gas-liquid separator are composed of at least two throttling mechanisms and one gas-liquid separation mechanism, and the gas-liquid separation mechanism is between the two throttling mechanisms. The working principle of the throttling mechanism is based on the Bernoulli principle and the continuity equation, so that in the refrigeration process, the throttling mechanism is placed at the high-pressure end of the refrigerant to limit the flow of the refrigerant, reduce its pressure and temperature, and thus achieve the effect of refrigeration. The gas-liquid separation mechanism can effectively separate the high-pressure gaseous refrigerant from the low-pressure liquid refrigerant, thereby improving the operating efficiency and stability of the air source heat pump. In addition, the gas-liquid separation mechanism can use other mechanisms with separation effect, such as a flash tank.

[0038] As an optional implementation, in some embodiments, the fluid heated or cooled in the room can include air, water or other liquids.

[0039] In a second aspect, the present application provides a continuous defrosting and heating air source heat pump operation method, based on the above-mentioned continuous defrosting and heating air source heat pump, the operation mode specifically includes:

[0040] Heating mode: the reactor group performs high-pressure adsorption and low-pressure desorption, and the fluid after high-pressure adsorption enters the outdoor heat exchanger through the gas heat exchanger, and then enters the compressor together with the fluid after low-pressure desorption for compression, and finally enters the indoor heat exchanger through the liquid heater to release heat to the indoor air.

[0041] Cooling mode: the reactor group performs high-pressure adsorption and low-pressure desorption, and the fluid after high-pressure adsorption enters the outdoor heat exchanger through the gas heat exchanger, and then enters the indoor heat exchanger through the throttling and gas-liquid separator to cool the indoor air.

[0042] As an optional implementation, in some embodiments, in the operation of the heating mode, the fluid after entering the indoor heat exchanger also returns to the reactor group through the throttling and gas-liquid separator for circulation and re-enters the outdoor heat exchanger.

[0043] As an optional implementation, in some embodiments, in the operation of the cooling mode, the fluid after entering the indoor heat exchanger enters the compressor together with the fluid after low-pressure desorption for compression, and then enters the outdoor heat exchanger after the liquid heater.

[0044] As an optional implementation, in some embodiments, the reactor group simultaneously performs high-pressure adsorption and low-pressure desorption, the first reactor performs high-pressure adsorption, and the second reactor performs low-pressure desorption. Further, when performing high-pressure adsorption, the first valve is controlled to be in a closed state, and the third valve is controlled to be in an open state; when performing low-pressure desorption, the second valve is controlled to be in an open state, and the fourth valve is controlled to be in a closed state.

[0045] Specifically, the two modes of the air source heat pump are as follows.

[0046] Heating mode: high pressure adsorption, the cold fluid of the gas heat exchanger is introduced into the first reactor, the adsorbent adsorbs the high pressure refrigerant vapor separated from the gas-liquid separator and releases heat to the cold fluid; low pressure desorption, the hot fluid of the liquid heat exchanger is introduced into the second reactor, the adsorbent absorbs heat from the hot fluid and desorbs low pressure refrigerant vapor; the heated cold fluid is introduced into the gas heat exchanger to heat outdoor air; the outdoor air is heated by the gas heat exchanger and then introduced into the outdoor heat exchanger, and the refrigerant of the outdoor heat exchanger releases heat to the outdoor heat exchanger; the refrigerant of the outdoor heat exchanger is heated by the outdoor air into low pressure vapor and enters the compressor together with the refrigerant vapor desorbed by the second reactor, and is compressed into high pressure refrigerant vapor; the high pressure refrigerant vapor compressed by the compressor first enters the liquid heater for cooling, then enters the indoor heat exchanger to cool into liquid refrigerant, and releases heat to the indoor air; the liquid refrigerant cooled by the indoor heat exchanger is throttled and gas-liquid separated by the gas-liquid separator, and the generated refrigerant vapor enters the reactor group, and the refrigerant liquid enters the outdoor heat exchanger.

[0047] Heating mode: high pressure adsorption, the cold fluid of the gas heat exchanger is introduced into the first reactor, the adsorbent adsorbs the high pressure refrigerant vapor separated from the gas-liquid separator and releases heat to the cold fluid; low pressure desorption, the hot fluid of the liquid heat exchanger is introduced into the second reactor, the adsorbent absorbs heat from the hot fluid and desorbs low pressure refrigerant vapor; the heated cold fluid is introduced into the gas heat exchanger to heat outdoor air; the outdoor air is heated by the gas heat exchanger and then introduced into the outdoor heat exchanger, and the refrigerant of the outdoor heat exchanger releases heat to the outdoor heat exchanger; the refrigerant of the outdoor heat exchanger is heated by the outdoor air into low pressure vapor and enters the compressor together with the refrigerant vapor desorbed by the second reactor, and is compressed into high pressure refrigerant vapor; the high pressure refrigerant vapor compressed by the compressor first enters the liquid heater for cooling, then enters the indoor heat exchanger to cool into liquid refrigerant, and releases heat to the indoor air; the liquid refrigerant cooled by the indoor heat exchanger is throttled and gas-liquid separated by the gas-liquid separator, and the generated refrigerant vapor enters the reactor group, and the refrigerant liquid enters the outdoor heat exchanger.

[0048] It can be seen that the air source heat pump simultaneously performs high pressure adsorption and low pressure desorption through the reactor group to make the indoor heat exchanger and the outdoor heat exchanger release heat at the same time, so that outdoor defrosting and indoor heating can be realized at the same time, and the adsorption and desorption characteristics of the adsorbent are used to improve the refrigeration efficiency in cooperation with the reactor group.

[0049] Example 1

[0050] When the fluid is air, the adsorbent used in the reactor group is calcium chloride, and the refrigerant is ammonia.

[0051] In the winter, when the defrosting and heating are needed, the second reactor and the first reactor are in the high pressure adsorption state and the low pressure desorption state respectively in one cycle of the reactor group.

[0052] Low pressure desorption state: the fourth valve is controlled to be closed, the second valve is controlled to be opened, the third interface of the second reactor is communicated with the inlet of the compressor, the endothermic process of the low pressure desorption is carried out, and the time is 1200s.

[0053] High pressure adsorption state: the first valve is controlled to be closed, the third valve is controlled to be opened, the first interface of the first reactor is communicated with the second interface of the throttling and gas-liquid separator, the exothermic process of the high pressure adsorption is carried out, and the time is 1200s.

[0054] After one cycle, the valves in the opened state are closed and the valves in the closed state are opened.

[0055] In the embodiment, the indoor heat exchanger and the outdoor heat exchanger are in the continuous operation state.

[0056] Embodiment 2

[0057] When the fluid is water, the adsorbent used in the reactor group is activated carbon, and the refrigerant is ammonia.

[0058] The other conditions are the same as those in Embodiment 1, and are not described herein.

[0059] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0060] The above embodiments are only for the purpose of illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and to implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made in accordance with the essence of the present application should be covered within the protection scope of the present application.

Claims

1. An air-source heat pump capable of continuous defrosting and heating, characterized in that, include: The system includes a compressor, a reactor group, a liquid heat exchanger, a gas heat exchanger, a throttling and gas-liquid separator, an indoor heat exchanger, and an outdoor heat exchanger. The reactor group performs high-pressure adsorption and low-pressure desorption of refrigerant vapor. The reactor group includes at least one first reactor and at least one second reactor, and both the first reactor and the second reactor are equipped with adsorbent. The compressor outlet is connected to the first port of the liquid heat exchanger via a pipe; the second port of the liquid heat exchanger is connected to the first port of the second reactor via a pipe; the second port of the second reactor is connected to the compressor inlet via a pipe; the third port of the second reactor is connected to the third port of the liquid heat exchanger via a pipe; the second port of the outdoor heat exchanger is connected to the first port of the throttling and gas-liquid separator via a pipe; the second port of the throttling and gas-liquid separator is connected to the fourth port of the second reactor and the first port of the first reactor via pipes; and the third port of the throttling and gas-liquid separator is connected to the first port of the indoor heat exchanger. The second port of the first reactor is connected to the inlet of the compressor via a pipeline; the third port of the first reactor is connected to the first port of the gas heat exchanger via a pipeline; the second port of the gas heat exchanger is connected to the fourth port of the first reactor via a pipeline; the third port of the gas heat exchanger is connected to the third port of the outdoor heat exchanger via a pipeline; the fourth port of the liquid heat exchanger, the first port of the outdoor heat exchanger, the second port of the indoor heat exchanger, and the inlet of the compressor are connected via pipelines; the fourth port of the gas heat exchanger, the fourth port of the outdoor heat exchanger, and the third and fourth ports of the indoor heat exchanger are all connected to the atmosphere. A four-way valve is installed on the pipe between the fourth port of the liquid heat exchanger, the first port of the outdoor heat exchanger, the second port of the indoor heat exchanger, and the inlet of the compressor.

2. The air-source heat pump capable of continuous defrosting and heating according to claim 1, characterized in that, A first valve is installed on the pipe between the second port of the first reactor and the inlet of the compressor; a second valve is installed on the pipe between the second port of the second reactor and the inlet of the compressor; a third valve is installed on the pipe between the second port of the throttling and gas-liquid separator and the first port of the first reactor; and a fourth valve is installed on the pipe between the second port of the throttling and gas-liquid separator and the fourth port of the second reactor.

3. The air-source heat pump capable of continuous defrosting and heating according to claim 1, characterized in that, The adsorbent includes physical adsorbents and chemical adsorbents. The physical adsorbent is one or a combination of activated carbon, zeolite, silica gel or organometallic framework materials, and the chemical adsorbent is a metal salt.

4. A method for operating an air-source heat pump capable of continuous defrosting and heating, characterized in that, Based on the air source heat pump capable of continuous defrosting and heating as described in any one of claims 1 to 3, the specific operating modes include: Heating mode: The reactor group performs high-pressure adsorption and low-pressure desorption. The fluid after high-pressure adsorption enters the outdoor heat exchanger through the gas heat exchanger, and then enters the compressor together with the fluid after low-pressure desorption for compression. Finally, it enters the indoor heat exchanger through the liquid heater to release heat to the indoor air. Cooling mode: The reactor group performs high-pressure adsorption and low-pressure desorption. The fluid after high-pressure adsorption enters the outdoor heat exchanger through the gas heat exchanger, and then returns to the reactor group for circulation and enters the indoor heat exchanger to cool the indoor air through the throttling and gas-liquid separator.

5. The method for operating an air-source heat pump capable of continuous defrosting and heating according to claim 4, characterized in that, During the operation of the heating mode, the fluid entering the indoor heat exchanger is throttled and separated by a gas-liquid separator before returning to the reactor group for circulation and re-entering the outdoor heat exchanger.

6. The method for operating an air-source heat pump capable of continuous defrosting and heating according to claim 4, characterized in that, During the operation of the cooling mode, the fluid entering the indoor heat exchanger and the fluid after low-pressure desorption enter the compressor for compression together, and then enter the outdoor heat exchanger after passing through the liquid heater.

7. The method for operating an air-source heat pump capable of continuous defrosting and heating according to claim 4, characterized in that, The reactor group performs both high-pressure adsorption and low-pressure desorption simultaneously. The first reactor performs high-pressure adsorption, and the second reactor performs low-pressure desorption.

8. The method for operating an air-source heat pump capable of continuous defrosting and heating according to claim 7, characterized in that, When high-pressure adsorption is performed, the first valve is controlled to be closed and the third valve is controlled to be open; when low-pressure desorption is performed, the second valve is controlled to be open and the fourth valve is controlled to be closed.

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