Stepless refrigerating and heating adjusting system

Abstract

The utility model discloses a stepless refrigerating and heating adjusting system, and relates to the technical field of heat pumps. Wherein the first branch comprises a compressor, a refrigeration heat exchanger and a refrigeration expansion valve which are sequentially connected in series; each second branch comprises a one-way control piece, a three-way valve, a heat exchanger and an expansion valve, the three-way valves, the heat exchangers and the expansion valves are sequentially connected in series, the one-way control pieces are connected with the expansion valves in parallel, and the one-way control pieces are communicated from one ends close to the heat exchangers to the other ends; one end, far away from the heat exchanger, of the expansion valve is communicated with one end, far away from the refrigeration heat exchanger, of the refrigeration expansion valve, and the two heat exchangers are a heating heat exchanger and a heat balance heat exchanger respectively; and the expansion valve and the refrigeration expansion valve are electrically driven. According to the utility model, various operation conditions can be provided, cold and heat requirements can be met, and meanwhile, energy recovery is realized, so that the operation stability and the energy utilization rate are improved, and the cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat pump technical field especially relates to a stepless refrigeration heating regulation system. BACKGROUND

[0002] At present, four-pipe heat pump unit on the market can effectively meet the dual needs of users requiring cooling and heating at the same time, and can save the operation cost and initial investment cost of equipment, because it can provide heating source for free while cooling and dehumidifying with cold water. However, the four-pipe heat pump units currently used generally have the following technical problems: complex structure design, not flexible enough, and when the cooling and heating demand is not matched, the heat pump unit needs to switch the operation mode repeatedly, which will lead to unstable system, high equipment cost and difficult to promote in the market. Therefore, the existing heat pump equipment needs to be further optimized. SUMMARY

[0003] The utility model aims at at least solving one of the technical problems existing in the prior art. Therefore, the utility model provides a stepless refrigeration heating regulation system, which can provide multiple operation conditions, effectively match the cooling and heating demand, realize energy recycling, improve the system operation stability and energy utilization rate, and reduce the system cost.

[0004] The utility model embodiment provides a stepless refrigeration heating regulation system, which comprises:

[0005] A first branch circuit, comprising a compressor, a refrigeration heat exchanger and a refrigeration expansion valve connected in series;

[0006] Two second branch circuits, each of which comprises a one-way control component and a three-way valve, a heat exchanger and an expansion valve connected in series, the one-way control component is connected in parallel to the expansion valve, and the conduction direction of the one-way control component is from one end close to the heat exchanger to the other end;

[0007] Wherein, the other two interfaces of each three-way valve are respectively communicated with the suction port and the exhaust port of the compressor, the interface of each three-way valve communicated with the heat exchanger is switched to one of the other two interfaces, one end of each expansion valve away from the heat exchanger is communicated with one end of the refrigeration expansion valve away from the refrigeration heat exchanger, the two heat exchangers are a heating heat exchanger and a heat balance heat exchanger respectively, and the expansion valve and the refrigeration expansion valve are electrically driven.

[0008] According to the stepless refrigeration and heating adjustment system, the following advantages are achieved: the expansion valve and the refrigeration expansion valve are both electrically driven, the heat exchanger can be connected to the suction port or the exhaust port of the compressor through the three-way valve, the refrigeration heat exchanger and at least two of the two heat exchangers can be selected and controlled to operate through switching of the three-way valve and opening and closing control of the two expansion valves and the refrigeration expansion valve, so that the stepless refrigeration and heating adjustment system can provide multiple operation modes such as a simultaneous refrigeration and heating mode, a single refrigeration mode, a single heating mode, a refrigeration-dominant heating-assisted mode, a heating-dominant refrigeration-assisted mode and a defrosting mode, thereby realizing flexible adjustment of working conditions, effectively matching actual cold and heat requirements, avoiding problems such as poor system operation stability caused by repeated switching of operation modes, and realizing recovery and utilization of energy, adjusting the amount of recovered energy and improving energy utilization efficiency.

[0009] In addition, the stepless refrigeration and heating adjustment system adopts the above structure design, can simplify the pipeline, reduce parts, thereby reducing the manufacturing cost of the system.

[0010] In some embodiments of the utility model, at least one flow control valve is connected in series to the second branch, and the flow control valve is configured to adjust the refrigerant flow into the second branch.

[0011] In some embodiments of the utility model, one of the remaining two interfaces of the three-way valve is connected to the suction port of the compressor, and the other is connected in series to the flow control valve and the exhaust port of the compressor.

[0012] In some embodiments of the utility model, the stepless refrigeration and heating adjustment system has a simultaneous refrigeration and heating mode, in the simultaneous refrigeration and heating mode, the refrigeration expansion valve is configured to be in an open state, the two expansion valves are configured to be in a closed state, and the three-way valve located in the second branch of the heat balance heat exchanger is configured to be connected to the suction port of the compressor.

[0013] In some embodiments of the utility model, the stepless refrigeration and heating adjustment system has single refrigeration mode, in the single refrigeration mode, the refrigeration expansion valve is configured to open state, two the expansion valve is configured to closed state, and the three -way valve on the second branch line where the heat balance heat exchanger is located is configured to lead to the exhaust port of the compressor, the three -way valve on the second branch line where the heating heat exchanger is located is configured to lead to the suction port of the compressor.

[0014] In some embodiments of the utility model, the stepless refrigeration and heating adjustment system has single refrigeration mode, in the single refrigeration mode, the refrigeration expansion valve is configured to open state, two the expansion valve is configured to closed state, and the three -way valve on the second branch line where the heat balance heat exchanger is located is configured to lead to the exhaust port of the compressor, the three -way valve on the second branch line where the heating heat exchanger is located is configured to lead to the suction port of the compressor.

[0015] In some embodiments of the utility model, the stepless refrigeration and heating adjustment system has single refrigeration mode, in the single refrigeration mode, the refrigeration expansion valve is configured to open state, two the expansion valve is configured to closed state, and the three -way valve on the second branch line where the heat balance heat exchanger is located is configured to lead to the exhaust port of the compressor, the three -way valve on the second branch line where the heating heat exchanger is located is configured to lead to the suction port of the compressor.

[0016] In some embodiments of the utility model, the stepless refrigeration and heating adjustment system has single refrigeration mode, in the single refrigeration mode, the refrigeration expansion valve is configured to open state, two the expansion valve is configured to closed state, and the three -way valve on the second branch line where the heat balance heat exchanger is located is configured to lead to the exhaust port of the compressor, the three -way valve on the second branch line where the heating heat exchanger is located is configured to lead to the suction port of the compressor.

[0017] In some embodiments of the utility model, the stepless refrigeration and heating adjustment system has single refrigeration mode, in the single refrigeration mode, the refrigeration expansion valve is configured to open state, two the expansion valve is configured to closed state, and the three -way valve on the second branch line where the heat balance heat exchanger is located is configured to lead to the exhaust port of the compressor, the three -way valve on the second branch line where the heating heat exchanger is located is configured to lead to the suction port of the compressor.

[0018] In some embodiments of the utility model, the one-way control piece is one-way valve.

[0019] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent to those skilled in the art upon examination of the following or can be learned by practice of the application. The objects and other advantages of the application can be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a structure schematic view of a stepless refrigeration and heating adjustment system according to an embodiment of the present application;

[0021] Figure 2 is a refrigerant flow direction schematic view of a stepless refrigeration and heating adjustment system according to an embodiment of the present application in a simultaneous refrigeration and heating mode and a heat balance heat exchanger in a non-working state;

[0022] Figure 3 is a refrigerant flow direction schematic view of a stepless refrigeration and heating adjustment system according to an embodiment of the present application in a single refrigeration mode;

[0023] Figure 4 is a refrigerant flow direction schematic view of a stepless refrigeration and heating adjustment system according to an embodiment of the present application in a single heating mode;

[0024] Figure 5 is a refrigerant flow direction schematic view of a stepless refrigeration and heating adjustment system according to an embodiment of the present application in a refrigeration as main and heating as auxiliary mode and a heat balance heat exchanger in a heat dissipation mode;

[0025] Figure 6 is a refrigerant flow direction schematic view of a stepless refrigeration and heating adjustment system according to an embodiment of the present application in a heating as main and refrigeration as auxiliary mode and a heat balance heat exchanger in a heat absorption mode;

[0026] Figure 7 is a refrigerant flow direction schematic view of a stepless refrigeration and heating adjustment system according to an embodiment of the present application in a single heating mode and a heat balance heat exchanger in a heat dissipation defrosting mode.

[0027] Reference signs: 100, compressor; 110, exhaust port; 120, suction port; 210, refrigeration heat exchanger; 220, heat balance heat exchanger; 230, heating heat exchanger; 310, refrigeration expansion valve; 320, heat balance expansion valve; 330, heating expansion valve; 410, first one-way valve; 420, second one-way valve; 510, first three-way valve; 520, second three-way valve; 600, flow control valve; 700, fan. DETAILED DESCRIPTION

[0028] The embodiments of the present application are described below in detail, examples of the embodiments are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the present application, and cannot be understood as limiting the present application.

[0029] In the description of the present application, it is to be understood that the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0030] In the description of the present application, it is to be noted that, unless otherwise specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0031] At present, with the vigorous promotion of double carbon policy, the demand for building energy saving is also increasing, and the specific goal of high-quality development in the field of building is to vigorously promote the realization of low-carbon healthy building, so the demand for recycling waste heat of air conditioner or providing refrigeration and heating for building with a set of equipment is also increasing sharply.

[0032] At present, the four-pipe heat pump unit in the market can provide free heating source while providing cooling and dehumidification function through cold water, so it can not only meet the dual needs of users who need cooling and heating at the same time, but also save the operation cost and initial investment of the equipment. However, the four-pipe heat pump units commonly used at present all have the following disadvantages: the structure design of the unit is relatively complex, the flexibility of working condition adjustment is insufficient, and when the actual refrigerating capacity and heating capacity demand cannot be effectively matched, the heat pump unit needs to be repeatedly switched between operation modes, which will cause the system operation stability to decrease, at the same time, the cost of the equipment is relatively high, which is difficult to popularize and use in the market. Therefore, the structure design of the existing heat pump equipment needs to be further improved and optimized.

[0033] Based on this, the utility model provides a kind of stepless refrigeration heating regulation system, multiple operating conditions can be provided, the use needs of user are met, and actual cold heat demand can be effectively matched, energy can be recycled and utilized simultaneously, so that system operation stability and energy utilization rate can be improved, the purpose of energy saving and cost reduction is realized.

[0034] Reference is made below Figures 1 to 7 A stepless refrigeration and heating adjustment system is provided according to an embodiment of the present application.

[0035] As Figures 1 to 7 shown, the stepless refrigeration and heating adjustment system according to the first embodiment of the present application has the advantages of simple structure design, multiple operation modes, flexible working condition adjustment, good operation stability, high energy utilization rate and low cost, and it is applicable to air source heat pumps, water source heat pumps, evaporative cooling and heating pumps, and composite heat pumps of air source + water source.

[0036] The stepless refrigeration and heating adjustment system provided in the first embodiment comprises a first branch and a second branch.

[0037] The first branch comprises a compressor 100, a refrigeration heat exchanger 210 and a refrigeration expansion valve 310, wherein the compressor 100, the refrigeration heat exchanger 210 and the refrigeration expansion valve 310 are connected in series by pipelines, thereby jointly forming the first branch. The refrigeration expansion valve 310 is electrically driven, can be turned on and off, and can adjust its opening degree. Specifically, the refrigeration expansion valve 310 is an electromagnetic electronic expansion valve or an electrically driven electronic expansion valve. The refrigeration expansion valve 310 can control the flow rate of the refrigerant (i.e. refrigerant) through electrical signals, and can adjust the valve opening degree in real time according to the preset program or the feedback of the sensor, thereby realizing accurate control of the liquid supply amount of the refrigeration heat exchanger 210.

[0038] It can be understood that the compressor 100, as the core component of the stepless refrigeration and heating adjustment system, has a suction port 120 and a discharge port 110. The refrigerant flows into the compressor 100 through the suction port 120. The compressor 100 can compress the low-temperature and low-pressure gaseous refrigerant from the refrigeration heat exchanger 210 into high-temperature and high-pressure gaseous refrigerant, and can drive the refrigerant to continuously flow and exchange energy in the pipeline. The refrigerant processed by compression will flow out of the compressor 100 through the discharge port 110.

[0039] The refrigerant in the refrigeration heat exchanger 210 (i.e. evaporator) can provide refrigeration capacity to the outside, evaporate by absorbing heat from the outside, and the outlet end of the refrigeration heat exchanger 210 is in communication with the suction port 120 of the compressor 100 through a pipeline, so that the gaseous refrigerant after heat absorption and evaporation can flow into the compressor 100. The inlet end of the refrigeration heat exchanger 210 is in communication with the outlet end of the refrigeration expansion valve 310 through a pipeline. The refrigerant will be throttled and decompressed during the process of flowing through the refrigeration expansion valve 310, so that the pressure and temperature of the refrigerant will be reduced, so that the refrigerant can transfer refrigeration capacity to the outside at the refrigeration heat exchanger 210. Therefore, through the operation of the refrigeration heat exchanger 210, the refrigeration function can be provided for the user.

[0040] The second branch is provided with two second branches, which are connected in parallel and then connected in series with the first branch.

[0041] Specifically, each second branch comprises a one-way control member, a three-way valve, a heat exchanger and an expansion valve, wherein the three-way valve, the heat exchanger and the expansion valve are connected in series through pipelines, and the one-way control member is connected in parallel with the expansion valve through a pipeline, thereby constituting the second branch. The one-way control member has a one-way conduction direction, i.e., the one-way control member has one end close to the heat exchanger facing the other end.

[0042] In the embodiment, the one-way control member is a one-way valve (also known as a check valve or a non-return valve), which can control the one-way flow of the refrigerant and does not need to be electrically controlled to open and close, thereby simplifying the control strategy. The expansion valve is electrically driven and can be switched between an open state and a closed state, and can adjust the opening size thereof. Specifically, the expansion valve is an electromagnetic electronic expansion valve or an electrically driven electronic expansion valve. The expansion valve can control the flow of the refrigerant through an electric signal and can adjust the valve opening in real time according to a preset program or feedback from a sensor, thereby achieving accurate control of the liquid supply amount of the heat exchanger.

[0043] It can be understood that the parallel connection between the one-way control member and the expansion valve can control whether the refrigerant in the second branch flows to the expansion valve or the one-way control member, thereby controlling whether the refrigerant needs to be throttled and depressurized. When the heat exchanger is used as a condenser, the refrigerant flowing out of the heat exchanger can directly flow to the one-way control member, rather than the expansion valve; when the heat exchanger is used as an evaporator, the refrigerant flowing to the heat exchanger needs to pass through the expansion valve, rather than the one-way control member, so that the temperature and pressure of the refrigerant decrease under the action of throttling and depressurizing, thereby enabling the refrigerant to provide refrigeration capacity at the heat exchanger.

[0044] Therefore, the one-way control member is used in combination with the expansion valve to control the switching of the heat exchanger between the evaporator and the condenser, and the expansion valve and the refrigeration expansion valve 310 can electrically control the opening and closing states thereof, thereby controlling the operating states (i.e., the working state and the non-working state) of the two heat exchangers and the refrigeration heat exchanger 210, which helps to realize the stepless refrigeration and heating adjustment system to provide multiple operating modes to meet the actual use needs.

[0045] Of course, in other embodiments, the one-way control member is an electrically driven valve, which is in a closed state when the heat exchanger needs to be used as an evaporator, and the expansion valve is in an open state, so that the refrigerant can flow through the expansion valve; when the heat exchanger is used as a condenser, the electrically driven valve is in an open state, and the expansion valve is in a closed state, so that the refrigerant can flow through the electrically driven valve.

[0046] One interface of each three-way valve is connected to one end of the heat exchanger, and the other end of the heat exchanger is connected to one end of the expansion valve and one end of the one-way control member at the same time, and the other end of the expansion valve is connected to the other end of the one-way control member. The other two interfaces of each three-way valve are connected to the suction port 120 and the discharge port 110 of the compressor 100 respectively, and the interface of each three-way valve connected to the heat exchanger can be switched to be connected to one of the other two interfaces of the three-way valve. The end of each expansion valve away from the heat exchanger is connected to the end of the refrigeration expansion valve 310 away from the refrigeration heat exchanger 210.

[0047] It can be understood that the three-way valve is a reversing valve, which has three interfaces, one of which can be switched to be connected to any one of the other two interfaces. The three-way valve can change the flow direction of the refrigerant by changing the position of the valve core, so as to realize the switching of the flow path of the refrigerant, so as to cooperate with the one-way control member, the expansion valve and the refrigeration expansion valve 310, and help to realize the multiple operation modes provided by the stepless refrigeration and heating adjustment system to meet the actual use needs of users.

[0048] In the embodiment, each three-way valve has three interfaces, namely interface a, interface b and interface c, wherein the interface a is connected to the discharge port 110 of the compressor 100 through a pipeline, the interface b is connected to the end of the heat exchanger away from the expansion valve through a pipeline, and the interface c is connected to the suction port 120 of the compressor 100 through a pipeline. The interface b can be switched to be connected to the interface a or the interface c, that is, the end of the heat exchanger away from the expansion valve can be connected to the suction port 120 or the discharge port 110 of the compressor 100 under the switching action of the three-way valve.

[0049] It can be understood that under the logical control of the actuator matched with the three-way valve, the interface a and the interface b can be connected in the power-off state, and the interface b and the interface c can be connected in the power-on state; or the interface a and the interface b are connected in the power-on state, and the interface b and the interface c are connected in the power-off state.

[0050] The two heat exchangers are a heating heat exchanger 230 and a heat balance heat exchanger 220. Among them, the refrigerant in the heating heat exchanger 230 (i.e. the condenser) can provide heating to the outside, and the temperature of the refrigerant in the heating heat exchanger 230 will decrease by releasing heat to the outside. By operating the heating heat exchanger 230, the heating function can be provided for the user.

[0051] The heat balance heat exchanger 220 can be stopped or switched between the evaporator and the condenser to cooperate with the refrigeration heat exchanger 210 and / or the heating heat exchanger 230, so as to help the stepless refrigeration and heating adjustment system to provide multiple operation modes to meet the actual use needs of users. When the heat balance heat exchanger 220 is used as an evaporator, the refrigerant flowing through the heat balance heat exchanger 220 can provide a refrigeration capacity, which can be dissipated or recycled, such as used for pre-cooling of air or water; when the heat balance heat exchanger 220 is used as a condenser, the refrigerant flowing through the heat balance heat exchanger 220 can provide a heating capacity, which can be dissipated or recycled, such as used for pre-heating of air or water.

[0052] In the embodiment, as shown in FIG. 2, for one of the second branches, the heat exchanger is the heat balance heat exchanger 220, the three-way valve is the first three-way valve 510, the one-way control member is the first one-way valve 410, and the expansion valve is the heat balance expansion valve 320. Figure 1 The interface a of the first three-way valve 510 is communicated with the exhaust port 110 of the compressor 100 through a pipeline, the interface c of the first three-way valve 510 is communicated with the suction port 120 of the compressor 100 through a pipeline, the interface b of the first three-way valve 510 is communicated with one port of the heat balance heat exchanger 220 through a pipeline, the other port of the heat balance heat exchanger 220 is communicated with one port of the heat balance expansion valve 320 and the inlet end of the first one-way valve 410 through a pipeline, the outlet end of the first one-way valve 410 is communicated with the other port of the heat balance expansion valve 320 through a pipeline, and is communicated with the port of the refrigeration expansion valve 310 away from the refrigeration heat exchanger 210.

[0053] When the heat balance heat exchanger 220 is used as an evaporator, the interface b of the first three-way valve 510 is switched to be communicated with the interface c, the first one-way valve 410 is in a non-working state, and the heat balance expansion valve 320 is in a working state; when the heat balance heat exchanger 220 is used as a condenser, the interface b of the first three-way valve 510 is switched to be communicated with the interface a, the first one-way valve 410 is in a working state, and the heat balance expansion valve 320 is in a non-working state.

[0054] For another second branch, the heat exchanger is set as a heating heat exchanger 230, the three-way valve is set as a second three-way valve 520, the one-way control member is set as a second one-way valve 420, and the expansion valve is set as a heating expansion valve 330. The interface a of the second three-way valve 520 is communicated with the exhaust port 110 of the compressor 100 through a pipeline, the interface c of the second three-way valve 520 is communicated with the suction port 120 of the compressor 100 through a pipeline, the interface b of the second three-way valve 520 is communicated with one port of the heating heat exchanger 230 through a pipeline, the other port of the heating heat exchanger 230 is communicated with one port of the heating expansion valve 330 and the inlet end of the second one-way valve 420 through a pipeline, the outlet end of the second one-way valve 420 is communicated with the other port of the heating expansion valve 330 through a pipeline, and is communicated with the port of the refrigeration expansion valve 310 away from the refrigeration heat exchanger 210.

[0055] When the heating heat exchanger 230 operates and provides heating capacity, the interface b of the second three-way valve 520 is switched to be communicated with the interface a, the second one-way valve 420 is in a working state, and the heating expansion valve 330 is in a non-working state; when the heating heat exchanger 230 is used as an evaporator in a defrosting mode, the interface b of the second three-way valve 520 is switched to be communicated with the interface c, the second one-way valve 420 is in a non-working state, and the heating expansion valve 330 is in a working state.

[0056] It can be understood that the refrigeration heat exchanger 210, the heating heat exchanger 230 and the heat balance heat exchanger 220 can be finned heat exchangers, shell-and-tube heat exchangers or jacketed tube heat exchangers, etc. which allow the air-conditioning refrigerant to exchange heat with water, air or oil, etc. When the refrigeration heat exchanger 210, the heating heat exchanger 230 and the heat balance heat exchanger 220 adopt finned heat exchangers, a fan 700 needs to be matched or installed in an air duct with air flowing therethrough. When the refrigeration heat exchanger 210, the heating heat exchanger 230 and the heat balance heat exchanger 220 adopt shell-and-tube heat exchangers or jacketed tube heat exchangers, inlet and outlet liquid pipes need to be arranged so that the heat exchange liquid can flow through the refrigeration heat exchanger 210, the heating heat exchanger 230 or the heat balance heat exchanger 220.

[0057] The refrigeration expansion valve 310, the heating expansion valve 330 and the heat balance expansion valve 320 can all play the role of throttling and pressure reduction. The refrigeration expansion valve 310 is arranged for the refrigeration heat exchanger 210 and can exert a throttling effect on the refrigerant flowing into the refrigeration heat exchanger 210 through the refrigeration expansion valve 310; the heating expansion valve 330 is arranged for the heating heat exchanger 230 and can exert a throttling effect on the refrigerant flowing into the heating heat exchanger 230 through the heating expansion valve 330; the heat balance expansion valve 320 is arranged for the heat balance heat exchanger 220 and can exert a throttling effect on the refrigerant flowing into the heat balance heat exchanger 220 through the heat balance expansion valve 320.

[0058] In the stepless refrigeration and heating regulation system provided in Embodiment 1, since both expansion valves and the refrigeration expansion valve 310 are electrically driven, and the two heat exchangers can be connected to the suction port 120 or the discharge port 110 of the compressor 100 through corresponding three-way valves, the operation of the refrigeration heat exchanger 210 and at least two of the two heat exchangers can be selected and controlled by the switching action of the three-way valves and the opening and closing control of the two expansion valves and the refrigeration expansion valve 310. At the same time, the flow path of the refrigerant can be adjusted adaptively, so that the stepless refrigeration and heating regulation system can provide users with multiple operating modes, including simultaneous cooling and heating mode, single cooling mode, single heating mode, cooling-main and heating-auxiliary mode, heating-main and cooling-auxiliary mode, and defrosting mode. This enables flexible adjustment of the operating conditions of the stepless refrigeration and heating regulation system, effectively matching the demand for heating and cooling capacity, and avoiding the problem in the prior art where the heat pump equipment needs to repeatedly switch operating modes due to the inability to coordinate and match the demand for heating and cooling, thus reducing the operating stability of the heat pump equipment.

[0059] When the stepless cooling and heating regulation system operates in either cooling-primary-heating-secondary-mode or heating-primary-cooling-secondary-mode, the refrigerant flow and cooling capacity can be adjusted in real time by controlling the opening value of the expansion valve and / or the cooling expansion valve 310. This dynamically matches the system's cooling and heating demands, enabling the recovery and utilization of cold or heat energy, and adjusting the amount of cold or heat energy recovered, thereby effectively improving energy utilization efficiency.

[0060] Furthermore, the stepless refrigeration and heating regulation system adopts the above-mentioned structure. Through the use of the first three-way valve 510, the second three-way valve 520, the refrigeration expansion valve 310, the heating expansion valve 330, the thermal balance expansion valve 320, the first one-way valve 410 and the second one-way valve 420 in conjunction with the refrigeration heat exchanger 210, the heating heat exchanger 230 and the thermal balance heat exchanger 220, the stepless refrigeration and heating regulation system can not only provide the above-mentioned multiple operating modes and realize the recovery of waste energy, but also simplify the system's piping design, reduce the number of system components, effectively reduce the system's manufacturing cost, and make the stepless refrigeration and heating regulation system more economical.

[0061] The stepless cooling and heating regulation system has a simultaneous cooling and heating mode. In the simultaneous cooling and heating mode, such as... Figure 2 As shown, the refrigeration expansion valve 310 is configured to be open, the two expansion valves are configured to be closed, and the three-way valve on the second branch where the heating heat exchanger 230 is located is configured to be connected to the exhaust port 110 of the compressor 100, and the three-way valve on the second branch where the heat balance heat exchanger 220 is located is configured to be connected to the suction port 120 of the compressor 100.

[0062] In this case, the refrigeration heat exchanger 210 and the heating heat exchanger 230 are operated simultaneously, and the heat balance heat exchanger 220 is in a non-operating state, so that the stepless refrigeration and heating conditioning system can provide the user with refrigeration capacity and heating capacity simultaneously, and meet the actual cold and heat demand. Specifically, since the interface b and the interface c of the first three-way valve 510 are communicated with each other, the interface b and the interface a of the second three-way valve 520 are communicated with each other, the refrigeration expansion valve 310 is in an open state and can play a role of throttling and pressure reduction, and the heating expansion valve 330 and the heat balance expansion valve 320 are in a closed state, therefore, the second branch in which the heat balance heat exchanger 220 is located is cut off (i.e., in a closed state), and no refrigerant enters or exits.

[0063] Then, the compressed high-temperature and high-pressure gaseous refrigerant flows out from the exhaust port 110 of the compressor 100, flows into the heating heat exchanger 230 through the interface a and the interface b of the second three-way valve 520, and provides heat to the outside to meet the heating demand. After completing heat release, the refrigerant flowing out from the heating heat exchanger 230 flows to the refrigeration expansion valve 310 through the second one-way valve 420. Then, the refrigerant is cooled and decompressed after flowing through the refrigeration expansion valve 310, and flows into the refrigeration heat exchanger 210 to provide cold to the outside to meet the refrigeration demand. After evaporation and heat absorption, the refrigerant flowing out from the refrigeration heat exchanger 210 flows back to the compressor 100 through the suction port 120 of the compressor 100, so as to complete a refrigerant flow cycle. In the process of simultaneous refrigeration and heating, by controlling the opening degree of the refrigeration expansion valve 310, the cold demand required by the system can be matched.

[0064] The stepless refrigeration and heating conditioning system has a separate refrigeration mode. In the separate refrigeration mode, as shown in FIG. 4, the refrigeration expansion valve 310 is configured in an open state, the two expansion valves are configured in a closed state, and the three-way valves located in the second branch of the heat balance heat exchanger 220 and the heating heat exchanger 230 are configured to be communicated with the exhaust port 110 and the suction port 120 of the compressor 100, respectively. Figure 3

[0065] In this case, the refrigeration heat exchanger 210 and the heat balance heat exchanger 220 are operated simultaneously, and the heating heat exchanger 230 is in a non-operating state, so that the stepless refrigeration and heating conditioning system can provide the user with refrigeration capacity, meet the refrigeration demand, and also recycle waste heat. Specifically, since the interface b and the interface a of the first three-way valve 510 are communicated with each other, the interface b and the interface c of the second three-way valve 520 are communicated with each other, the refrigeration expansion valve 310 is in an open state and can play a role of throttling and pressure reduction, and the heating expansion valve 330 and the heat balance expansion valve 320 are in a closed state, therefore, the second branch in which the heating heat exchanger 230 is located is cut off (i.e., in a closed state), and no refrigerant enters or exits. ​

[0066] The compressed refrigerant flows out through the exhaust port 110 of the compressor 100 and into the heat balance heat exchanger 220 through ports a and b of the first three-way valve 510. This allows it to transfer waste heat to other heat exchange media, such as heating air or water, thus achieving waste heat recovery and utilization. After heat loss, the refrigerant flowing from the heat balance heat exchanger 220 flows through the first one-way valve 410 to the refrigeration expansion valve 310. Under the throttling effect of the refrigeration expansion valve 310, the temperature and pressure of the refrigerant decrease, and it flows into the refrigeration heat exchanger 210 to exchange heat with other media flowing through it, achieving the refrigeration function and meeting the user's cooling capacity requirements. After flowing out of the refrigeration heat exchanger 210, the refrigerant flows into the compressor 100 through the suction port 120, thus completing one refrigerant flow cycle. During individual refrigeration, the refrigeration expansion valve 310 opens to a corresponding degree to provide sufficient cooling capacity.

[0067] The stepless cooling and heating control system has a separate heating mode. In the separate heating mode, such as... Figure 4 As shown, the refrigeration expansion valve 310 is configured to be closed. For the second branch where the heating heat exchanger 230 is located, the three-way valve is configured to be connected to the exhaust port 110 of the compressor 100, and the expansion valve is configured to be closed. Meanwhile, for the second branch where the heat balance heat exchanger 220 is located, the three-way valve is configured to be connected to the suction port 120 of the compressor 100, and the expansion valve is configured to be open.

[0068] In this configuration, the heating heat exchanger 230 and the heat balance heat exchanger 220 operate simultaneously, while the cooling heat exchanger 210 is in a non-operating state. Therefore, the stepless cooling and heating regulation system can provide heat to users, meeting their heating needs, and can also recover and reuse waste cooling capacity. Specifically, since ports b and c of the first three-way valve 510 are interconnected, and ports b and a of the second three-way valve 520 are interconnected, the heat balance expansion valve 320 is in the open state, acting as a throttling device. Meanwhile, the cooling expansion valve 310 and the heating expansion valve 330 are both in the closed state. Therefore, the branch formed by the series connection of the cooling heat exchanger 210 and the cooling expansion valve 310 is isolated (i.e., in a closed state), and no refrigerant enters or exits.

[0069] Then, the refrigerant flowing out of the discharge port 110 of the compressor 100 will flow into the heat recovery heat exchanger 220 through the interface a and the interface b of the second three-way valve 520 to provide heat to the outside to meet the user's heating demand; after the heat is released, the refrigerant flowing out of the heat recovery heat exchanger 220 will flow to the direction of the heat balance expansion valve 320 through the second one-way valve 420; then, the refrigerant will be temperature-reduced and pressure-reduced after passing through the heat balance expansion valve 320 and flow into the heat balance heat exchanger 220 to recycle the waste cold energy, such as cooling air or water; then, the refrigerant will flow out of the heat balance heat exchanger 220 after absorbing heat in the heat balance heat exchanger 220 and flow back into the compressor 100 through the interface b and the interface c of the first three-way valve 510, thus completing a refrigerant flow cycle. In the process of separate heating, the heat balance expansion valve 320 will open the corresponding opening degree to play a good throttling pressure-reducing role.

[0070] The stepless refrigeration and heating adjustment system has a refrigeration-first and heating-second mode. In the refrigeration-first and heating-second mode, as shown in FIG. 5, the refrigeration expansion valve 310 is configured in an open state, the two three-way valves are configured to be connected to the discharge port 110 of the compressor 100, and the two expansion valves are configured in a closed state. Figure 5

[0071] In this case, the refrigeration heat exchanger 210, the heating heat exchanger 230 and the heat balance heat exchanger 220 are operated at the same time, so that the stepless refrigeration and heating adjustment system can provide the user with the main refrigeration function and the secondary heating function, and can recycle and utilize waste heat. Specifically, since the interface b and the interface a of the first three-way valve 510 are connected to each other, the interface b and the interface a of the second three-way valve 520 are connected to each other, the refrigeration expansion valve 310 is in an open state and can play a throttling role, and the heating expansion valve 330 and the heat balance expansion valve 320 are in a closed state, therefore, the first branch and the two second branches have refrigerant flowing therethrough.

[0072] ​Then, the refrigerant flowing out of the outlet 110 of the compressor 100 is divided into two paths, one of which flows into the heat balance heat exchanger 220 through the interfaces a and b of the first three-way valve 510 to transfer heat outward, such as preheating air or water, to realize waste heat recovery and utilization, at this time, the heat balance heat exchanger 220 is in heat dissipation mode, and then the refrigerant flowing out of the heat balance heat exchanger 220 flows to the first one-way valve 410; at the same time, the other refrigerant flows into the heating heat exchanger 230 through the interfaces a and b of the second three-way valve 520 to realize the heating function, and then the refrigerant flowing out of the heating heat exchanger 230 passes through the second one-way valve 420 and is combined with the refrigerant flowing out of the first one-way valve 410, and flows to the refrigeration expansion valve 310. Under the throttling action of the refrigeration expansion valve 310, the refrigerant is throttled and depressurized, and flows into the refrigeration heat exchanger 210 to transfer cold outward to realize the refrigeration function; finally, the refrigerant flowing out of the refrigeration heat exchanger 210 returns to the compressor 100, thereby completing a refrigerant flow cycle. In this process, the opening value of the refrigeration expansion valve 310 is controlled to enable the refrigerant to provide the required refrigeration capacity after passing through the refrigeration expansion valve 310.

[0073] It can be understood that when the stepless refrigeration and heating adjustment system operates in the simultaneous refrigeration and heating mode, if the refrigeration capacity demand remains unchanged and the heating capacity demand relatively decreases, the switching action of the first three-way valve 510 can be performed to make the interface b of the first three-way valve 510 conductive to the interface a, so that the high-temperature and high-pressure refrigerant flowing out of the compressor 100 is divided to flow to the heat balance heat exchanger 220, reducing the refrigerant flow flowing into the heating heat exchanger 230, thereby meeting the user's low heating capacity demand. At this time, the stepless refrigeration and heating adjustment system switches from the simultaneous refrigeration and heating mode to the refrigeration-dominant and heating-assisted mode.

[0074] When the stepless refrigeration and heating adjustment system operates in the refrigeration-dominant and heating-assisted mode, if the refrigeration capacity demand remains unchanged and the heating capacity demand relatively increases, the switching action of the first three-way valve 510 can be performed to make the interface b of the first three-way valve 510 conductive to the interface c, and at the same time, the heat balance expansion valve 320 is switched to the closed state, so that the high-temperature and high-pressure refrigerant flowing out of the compressor 100 flows into the heating heat exchanger 230 in sequence, increasing the refrigerant flow flowing into the heating heat exchanger 230, thereby meeting the user's high heating capacity demand. At this time, the stepless refrigeration and heating adjustment system switches from the refrigeration-dominant and heating-assisted mode to the simultaneous refrigeration and heating mode.

[0075] The stepless refrigeration and heating adjustment system has a heating-dominant and refrigeration-assisted mode. In the heating-dominant and refrigeration-assisted mode, as described above, Figure 6As shown, the refrigeration expansion valve 310 is configured in an open state, for the second branch where the heating heat exchanger 230 is located, the three-way valve is configured to be connected to the exhaust port 110 of the compressor 100, and the expansion valve is configured in a closed state; at the same time, for the second branch where the heat balance heat exchanger 220 is located, the three-way valve is configured to be connected to the suction port 120 of the compressor 100, and the expansion valve is configured in an open state.

[0076] In this case, the refrigeration heat exchanger 210, the heating heat exchanger 230 and the heat balance heat exchanger 220 are operated at the same time, so that the stepless refrigeration and heating adjustment system can provide the user with the main heating function and the secondary refrigeration function, and can recycle and utilize the waste cold. Specifically, since the interface b and the interface c of the first three-way valve 510 are connected to each other, the interface b and the interface a of the second three-way valve 520 are connected to each other, the refrigeration expansion valve 310 and the heat balance expansion valve 320 are both in an open state and can both play a throttling role, and the heating expansion valve 330 is in a closed state, therefore, the first branch and the two second branches have refrigerant flowing through.

[0077] Then, the refrigerant flowing out of the compressor 100 will flow into the heating heat exchanger 230 through the interface a and the interface b of the second three-way valve 520, and exchange heat in the heating heat exchanger 230 to provide sufficient heat to meet the user's heating demand; then, the refrigerant flowing out of the heating heat exchanger 230 will be divided after passing through the second one-way valve 420, part of the refrigerant will flow to the refrigeration expansion valve 310, the refrigerant will be temperature and pressure reduced under the throttling effect of the refrigeration expansion valve 310, and flow into the refrigeration heat exchanger 210 to realize the refrigeration function; the other part of the refrigerant will flow to the heat balance expansion valve 320, the refrigerant will be temperature and pressure reduced under the throttling effect of the heat balance expansion valve 320, and flow into the heat balance heat exchanger 220 to transfer the cold to the outside, such as pre-cooling air or water, to realize the recycling of waste cold, at this time the heat balance heat exchanger 220 is in a heat absorption mode. The refrigerant flowing out of the heat balance heat exchanger 220 will be combined with the refrigerant flowing out of the refrigeration heat exchanger 210 after passing through the interface b and the interface c of the first three-way valve 510, and flow back to the compressor 100 together, to complete a refrigerant flow cycle. In this process, the opening value of the refrigeration expansion valve 310 and the heat balance expansion valve 320 is controlled to make the refrigerant provide the required refrigeration capacity after passing through the refrigeration expansion valve 310 and the heat balance expansion valve 320, so as to realize the control of the refrigeration capacity and the cold dissipation capacity.

[0078] Understandably, when the stepless cooling and heating system operates in simultaneous cooling and heating mode, if the heating demand remains constant while the cooling demand decreases relatively, the switching action of the first three-way valve 510 can connect port b to port c. Simultaneously, the thermal balance expansion valve 320 is switched to the open state, causing the refrigerant flowing from the second one-way valve 420 to be diverted. A portion of the refrigerant flows sequentially through the thermal balance expansion valve 320 and the thermal balance heat exchanger 220, reducing the refrigerant flow into the cooling heat exchanger 210, thereby meeting the user's lower cooling demand. At this time, the stepless cooling and heating system switches from simultaneous cooling and heating mode to a mode where heating is primary and cooling is secondary.

[0079] When the continuously variable cooling and heating system operates in a heating-primary-and-cooling-secondary-mode, if the heating demand remains constant while the cooling demand increases relatively, the thermal balance expansion valve 320 can be switched to the closed state. This allows all the refrigerant flowing from the second one-way valve 420 to flow into the refrigeration heat exchanger 210, increasing the refrigerant flow into the refrigeration heat exchanger 210 and thus meeting the user's high cooling demand. At this time, the continuously variable cooling and heating system switches from a heating-primary-and-cooling-secondary-mode to a simultaneous cooling and heating mode.

[0080] The continuously variable cooling and heating system has a defrost mode. In defrost mode, such as... Figure 7 As shown, the refrigeration expansion valve 310 is configured to be closed. For the second branch where the heat balance heat exchanger 220 is located, the three-way valve is configured to be connected to the exhaust port 110 of the compressor 100, and the expansion valve is configured to be closed. For the second branch where the heating heat exchanger 230 is located, the three-way valve is configured to be connected to the suction port 120 of the compressor 100, and the expansion valve is configured to be open.

[0081] In this situation, the heating heat exchanger 230 and the heat balance heat exchanger 220 operate simultaneously, while the cooling heat exchanger 210 is in the off state. In standalone heating mode, the heating heat exchanger 230 is in heat release mode and the heat balance heat exchanger 220 is in heat absorption mode. If the heat balance heat exchanger 220 is air-cooled, its surface is prone to frost formation in winter. To achieve defrosting, the stepless refrigeration and heating regulation system switches from standalone heating mode to defrosting mode by switching the first three-way valve 510 and the second three-way valve 520, and by controlling the opening and closing of the heat balance expansion valve 320 and the heating expansion valve 330. At this time, the heat balance heat exchanger 220 can be used as a condenser to release heat and solve the frost problem. Meanwhile, the heating heat exchanger 230 is used as a condenser. Furthermore, the heat balance heat exchanger 220 is equipped with a fan 700, which can be speed-adjusted to maintain system stability.

[0082] Specifically, since the interface b and the interface a of the first three-way valve 510 are communicated with each other, the interface b and the interface c of the second three-way valve 520 are communicated with each other, the heating expansion valve 330 is in an open state and can play a throttling role, and the refrigeration expansion valve 310 and the heat balance expansion valve 320 are both in a closed state, therefore, the branch circuit composed of the refrigeration heat exchanger 210 and the refrigeration expansion valve 310 is cut off (i.e. in a closed state) and has no refrigerant in and out.

[0083] Then, the refrigerant flowing out of the exhaust port 110 of the compressor 100 flows into the heat balance heat exchanger 220 through the interface a and the interface b of the first three-way valve 510 to transfer heat outward and complete the automatic defrosting work, at this time, the heat balance heat exchanger 220 is in a heat dissipation defrosting mode; the refrigerant flowing out of the heat balance heat exchanger 220 flows to the heating expansion valve 330 through the first one-way valve 410, and the temperature and pressure of the refrigerant are reduced under the throttling role of the heating expansion valve 330; the refrigerant flowing out of the heating expansion valve 330 flows through the heating heat exchanger 230 to evaporate by absorbing heat and flows back to the compressor 100 through the interface b and the interface c of the second three-way valve 520, so as to complete a refrigerant flow circulation. In this process, the opening value of the heating expansion valve 330 is controlled to enable the refrigerant to meet the required refrigerating capacity of the system after passing through the heating expansion valve 330.

[0084] As shown in FIG. 2, the stepless refrigeration and heating adjustment system according to the embodiment one of the present application comprises a compressor 100, a refrigeration heat exchanger 210, a refrigeration expansion valve 310, a heat balance heat exchanger 220, a heating expansion valve 330, a heating heat exchanger 230, a first three-way valve 510, a second three-way valve 520, a first one-way valve 410 and a second one-way valve 420. Figures 1 to 7 As shown in FIG. 3, the stepless refrigeration and heating adjustment system according to the embodiment two of the present application is different from the embodiment one in that the stepless refrigeration and heating adjustment system according to the embodiment two further comprises a flow control valve 600.

[0085] Moreover, the at least one second branch circuit is connected in series with the flow control valve 600, and the flow control valve 600 is configured to be capable of adjusting the refrigerant flow flowing into the second branch circuit. The flow control valve 600 can adjust the refrigerant flow flowing therethrough by controlling the opening thereof. In the embodiment, the flow control valve 600 is an electric ball valve, and the refrigerant flow can be controlled by adjusting the opening of the electric ball valve. Moreover, the electric ball valve can completely cut off the refrigerant in a closed state.

[0086] One interface of the three-way valve is communicated with one end of the heat exchanger away from the expansion valve through a pipeline, one of the other two interfaces of the three-way valve is communicated with the suction port 120 of the compressor 100 through a pipeline, and the other is connected in series with the flow control valve 600 and the exhaust port 110 of the compressor 100 through a pipeline.

[0087] It can be understood that in some examples, the second branch in which the heating heat exchanger 230 is located is provided with a flow control valve 600, which can be arranged between the second three-way valve 520 and the heating heat exchanger 230 or between the heating heat exchanger 230 and the heating expansion valve 330, or arranged between the second three-way valve 520 and the exhaust port 110 of the compressor 100.

[0088] In the present embodiment, as shown in Figure 1 As shown in FIG. 7, the number of flow control valves 600 is one, and the flow control valve 600 is arranged on the second branch in which the heating heat exchanger 230 is located. The interface a of the second three-way valve 520, the flow control valve 600, and the exhaust port 110 of the compressor 100 are sequentially connected by pipelines.

[0089] As shown in Figure 2 In the simultaneous cooling and heating mode, the flow control valve 600 is in a fully open state. As shown in Figure 3 In the cooling-only mode, the flow control valve 600 can be in a fully closed state. As shown in Figure 4 In the heating-only mode, the flow control valve 600 is in a fully open state. As shown in Figure 5 In the cooling-dominant and heating-auxiliary mode, the flow control valve 600 is in an open state, and can adjust the opening degree of itself according to the required heating capacity of the heating heat exchanger 230, so as to regulate the flow ratio between the refrigerant flowing into the heating heat exchanger 230 and the refrigerant flowing into the heat balance heat exchanger 220. As shown in Figure 6 In the heating-dominant and cooling-auxiliary mode, the flow control valve 600 is in a fully open state.

[0090] In other examples, the second branch in which the heat balance heat exchanger 220 is located is provided with a flow control valve 600, which can be arranged between the first three-way valve 510 and the heat balance heat exchanger 220 or between the heat balance heat exchanger 220 and the heat balance expansion valve 320, or arranged between the first three-way valve 510 and the exhaust port 110 of the compressor 100.

[0091] It can be understood that in the case of arranging the flow control valve 600 between the first three-way valve 510 and the heat balance heat exchanger 220 or between the heat balance heat exchanger 220 and the heat balance expansion valve 320, when the stepless cooling and heating adjustment system is in the cooling-dominant and heating-auxiliary mode, the refrigerant flow rate flowing into the heating heat exchanger 230 can be adjusted by regulating the opening degree of the flow control valve 600, so as to meet the demand for heating capacity; when the stepless cooling and heating adjustment system is in the heating-dominant and cooling-auxiliary mode, the refrigerant flow rate flowing into the cooling heat exchanger 210 can be adjusted by regulating the opening degree of the flow control valve 600, so as to meet the demand for cooling capacity.

[0092] In yet some examples, both of the second branches are provided with the flow control valve 600.

[0093] The stepless refrigeration and heating conditioning system provided by the second embodiment realizes multiple operation conditions such as simultaneous refrigeration and heating, single refrigeration, single heating, refrigeration as the main and heating as the auxiliary, heating as the main and refrigeration as the auxiliary, and defrosting by system optimization and function integration and using a relatively simple pipeline design, and can perform cold energy recovery or heat energy recovery, and the recovered cold energy or heat energy can be steplessly adjusted, so that the stepless refrigeration and heating conditioning system can be operated in all conditions.

[0094] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "exemplary embodiment", "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 present specification, the exemplary 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 one or more embodiments or examples in a suitable manner.

[0095] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A continuously refrigerating and heating conditioning system, characterized by, The application relates to a stepless refrigeration and heating adjustment system. The first branch comprises a compressor, a refrigeration heat exchanger and a refrigeration expansion valve connected in series; The second branch comprises two sub-branches, each of which comprises a one-way control element and a three-way valve, a heat exchanger and an expansion valve connected in series, the one-way control element is connected in parallel to the expansion valve, and the one-way control element is connected from one end close to the heat exchanger to the other end. The remaining two interfaces of each three-way valve are respectively connected to the suction port and the exhaust port of the compressor, the interface of each three-way valve connected to the heat exchanger is switched to be connected to one of the other two interfaces, one end of each expansion valve away from the heat exchanger is connected to one end of the refrigeration expansion valve away from the refrigeration heat exchanger, the two heat exchangers are a heating heat exchanger and a heat balance heat exchanger respectively, and the expansion valve and the refrigeration expansion valve are electrically driven.

2. The infinitely variable refrigerant heating and cooling conditioning system of claim 1, wherein, At least one flow control valve is connected in series to the second branch, and the flow control valve is configured to adjust the refrigerant flow into the second branch.

3. The infinitely refrigerating and heating conditioning system according to claim 2, wherein, One of the remaining two interfaces of the three-way valve is connected to the suction port of the compressor, and the other is connected in series to the flow control valve and the exhaust port of the compressor.

4. The infinitely variable refrigerant heating and cooling conditioning system of claim 1, wherein, The stepless refrigeration and heating adjustment system has a simultaneous refrigeration and heating mode, in which the refrigeration expansion valve is configured to be in an open state, the two expansion valves are configured to be in a closed state, the three-way valve located in the second branch of the heating heat exchanger is configured to be connected to the exhaust port of the compressor, and the three-way valve located in the second branch of the heat balance heat exchanger is configured to be connected to the suction port of the compressor.

5. The infinitely variable refrigerant heating and cooling conditioning system of claim 1, wherein, The stepless refrigeration and heating adjustment system has a separate refrigeration mode, in which the refrigeration expansion valve is configured to be in an open state, the two expansion valves are configured to be in a closed state, the three-way valve located in the second branch of the heat balance heat exchanger is configured to be connected to the exhaust port of the compressor, and the three-way valve located in the second branch of the heating heat exchanger is configured to be connected to the suction port of the compressor.

6. The infinitely variable refrigerant heating and cooling conditioning system of claim 1, wherein, The stepless refrigeration and heating adjustment system has a separate heating mode, in which the refrigeration expansion valve is configured to be in a closed state, for the second branch of the heating heat exchanger, the three-way valve is configured to be connected to the exhaust port of the compressor, and the expansion valve is configured to be in a closed state; for the second branch of the heat balance heat exchanger, the three-way valve is configured to be connected to the suction port of the compressor, and the expansion valve is configured to be in an open state.

7. The infinitely variable refrigerant heating and cooling conditioning system of claim 1, wherein, The stepless refrigeration and heating adjustment system has a refrigeration-oriented and heating-assisted mode, in which the refrigeration expansion valve is configured to be in an open state, the two three-way valves are configured to be connected to the exhaust port of the compressor, and the two expansion valves are configured to be in a closed state.

8. The infinitely variable refrigerant heating and cooling conditioning system of claim 1, wherein, The stepless refrigeration and heating conditioning system has a heating-dominant and refrigeration-aided mode, in which the refrigeration expansion valve is configured in an open state, for the second branch in which the heating heat exchanger is located, the three-way valve is configured to be conducted to the exhaust port of the compressor, and the expansion valve is configured in a closed state; for the second branch in which the heat balance heat exchanger is located, the three-way valve is configured to be conducted to the suction port of the compressor, and the expansion valve is configured in an open state.

9. The infinitely variable refrigerant heating and cooling conditioning system of claim 1, wherein, The stepless refrigeration and heating conditioning system has a defrosting mode, in which the refrigeration expansion valve is configured in a closed state, for the second branch in which the heat balance heat exchanger is located, the three-way valve is configured to be conducted to the exhaust port of the compressor, and the expansion valve is configured in a closed state; for the second branch in which the heating heat exchanger is located, the three-way valve is configured to be conducted to the suction port of the compressor, and the expansion valve is configured in an open state.

10. The infinitely variable refrigerant heating and cooling conditioning system of claim 1, wherein, The one-way control member is a one-way valve.

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