Heat cycle assembly and heat supply system

Abstract

The utility model relates to the technical field of heat pumps, in particular to a heat cycle assembly and a heat supply system. The heat pump unit aims to solve the problems of heat waste and low energy efficiency of a heat pump unit with heating and water heating functions. In order to achieve the purpose, the heat cycle assembly comprises a water inlet pipe and a water outlet pipe; a first end of a heat exchange pipe arranged in the heat supply water tank is communicated with the water inlet pipe; the buffer water tank is provided with a first inlet, a second inlet and a first outlet, and the first inlet communicates with the water inlet pipe; the first end of the heating pipeline communicates with the first outlet, and the second end communicates with the water outlet pipe; a first connector of the first electric control three-way valve communicates with the second end of the heat exchange pipe, a second connector communicates with the water outlet pipe, and a third connector communicates with a second inlet of the buffer water tank. By arranging the buffer water tank and the first electric control three-way valve, the heat-conducting medium discharged by the heat exchange pipe can enter the buffer water tank to adjust the temperature of the heat-conducting medium in the buffer water tank, echelon utilization of heat is achieved, and the energy efficiency of the system is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat pumps, and particularly relates to a heat circulation component and a heating system. Background Art

[0002] Nowadays, more and more two-in-one and three-in-one air conditioners appear in users' homes. The so-called three-in-one supply means a heat pump unit that can provide three functions: air conditioning, floor heating, and hot water. The two-in-one supply is to remove one of the functions based on the three-in-one supply. For example, it can be a two-in-one supply of air conditioning and floor heating, or a two-in-one supply of air conditioning and hot water, or a two-in-one supply of floor heating and hot water, etc.

[0003] Whether it is a two-in-one supply or a three-in-one supply, when the heat pump unit includes both floor heating and hot water functions at the same time, the heat conduction medium discharged from the unit usually divides into two independent paths. One path of the heat conduction medium enters the hot water supply tank to exchange heat with the water in the tank to provide domestic hot water, and the other path of the heat conduction medium directly enters the floor heating coil to participate in heating. However, since the temperatures required for domestic hot water and heating are different, this heat conduction medium circulation method results in heat waste, thus reducing the energy efficiency of the system.

[0004] Correspondingly, the art needs a new technical solution to solve the above problems. Summary of the Utility Model

[0005] In order to solve at least one of the above problems in the prior art, that is, to solve the problems of heat waste and low energy efficiency existing in heat pump units with heating and hot water functions, the present application provides a heat circulation component, and the heat circulation component includes:

[0006] An inlet pipe and an outlet pipe;

[0007] A hot water supply tank, wherein a heat exchange pipe is arranged in the hot water supply tank, and the first end of the heat exchange pipe is communicated with the inlet pipe;

[0008] A buffer tank, which has a first inlet, a second inlet, and a first outlet, and the first inlet is communicated with the inlet pipe;

[0009] A heating pipeline, the first end of which is communicated with the first outlet, and the second end of which is communicated with the outlet pipe;

[0010] A first electric control three-way valve, the first interface of which is communicated with the second end of the heat exchange pipe, the second interface of which is communicated with the outlet pipe, and the third interface of which is communicated with the second inlet of the buffer tank.

[0011] The heat cycle component of the present application can adjust the temperature of the heat transfer medium in the buffer water tank by allowing the heat transfer medium discharged from the heat exchange pipe to enter the buffer water tank through the setting of the buffer water tank and the first electronically controlled three-way valve, realizing the hierarchical utilization of heat and improving the energy efficiency of the system.

[0012] In the preferred technical solution of the above heat cycle component, the first inlet is arranged at the lower part or bottom of the buffer water tank, and the second inlet and the first outlet are arranged at the upper part or top of the buffer water tank.

[0013] The above setting method is beneficial to improving the mixing uniformity of the heat transfer medium.

[0014] In the preferred technical solution of the above heat cycle component, the heat cycle component further includes a second electronically controlled three-way valve. The first interface of the second electronically controlled three-way valve is communicated with the second end of the heating pipeline, the second interface of the second electronically controlled three-way valve is communicated with the water outlet pipe, and the third interface of the second electronically controlled three-way valve is communicated with the second inlet of the buffer water tank.

[0015] The above setting method can divert the heat transfer medium discharged from the heating pipeline into the buffer water tank for secondary utilization by setting the second electronically controlled three-way valve to adjust the temperature of the heat transfer medium in the buffer water tank.

[0016] In the preferred technical solution of the above heat cycle component, the heat cycle component further includes a first pump body. The liquid return port of the first pump body is communicated with the third interface of the first electronically controlled three-way valve, and the liquid discharge port of the first pump body is communicated with the second inlet of the buffer water tank.

[0017] In the preferred technical solution of the above heat cycle component, the heat cycle component further includes a first on-off valve. One end of the first on-off valve is communicated with the water inlet pipe, and the other end is communicated with the first end of the heat exchange pipe.

[0018] In the preferred technical solution of the above heat cycle component, the heat cycle component further includes a second on-off valve. One end of the second on-off valve is communicated with the water inlet pipe, and the other end is communicated with the first inlet.

[0019] In the preferred technical solution of the above heat cycle component, the heat cycle component further includes a check valve. The check valve is arranged on the pipeline between the third interface of the first electronically controlled three-way valve and the second inlet of the buffer water tank.

[0020] By setting the check valve, the heat transfer medium in the buffer water tank can be prevented from flowing back through the second inlet, improving the operation stability.

[0021] The present application also provides a heating system. The heating system includes a heat pump unit and the heat cycle component according to any one of the above technical solutions.

[0022] The heat pump unit includes a heating return water interface, a heating outlet water interface, a compressor, an air cooler, a throttling element and an evaporator connected through a refrigerant pipeline. The air cooler has a first refrigerant port, a second refrigerant port, a first liquid port and a second liquid port. A first heat exchange channel is formed between the first refrigerant port and the second refrigerant port, and a second heat exchange channel is formed between the first liquid port and the second liquid port. Heat exchange can be carried out between the first heat exchange channel and the second heat exchange channel. The first liquid port is communicated with the heating return water interface, and the second liquid port is communicated with the heating outlet water interface.

[0023] The water inlet pipe and the water outlet pipe of the heat circulation assembly are respectively communicated with the heating outlet water interface and the heating return water interface.

[0024] In the heating system of the present application, by arranging a buffer water tank and a first electrically controlled three-way valve in the heat circulation assembly, the heat-conducting medium discharged from the heat exchange pipe can be used to enter the buffer water tank to adjust the temperature of the heat-conducting medium in the buffer water tank, realizing the hierarchical utilization of heat and improving the energy efficiency of the system.

[0025] In a preferred technical solution of the above heating system, the heat pump unit further includes a third electrically controlled three-way valve and a fourth electrically controlled three-way valve. The first interface of the third electrically controlled three-way valve is communicated with the heating return water interface, the second interface of the third electrically controlled three-way valve is communicated with the first liquid port, the first interface of the fourth electrically controlled three-way valve is communicated with the second liquid port, the second interface of the fourth electrically controlled three-way valve is communicated with the heating outlet water interface, and the third port of the fourth electrically controlled three-way valve is communicated with the third port of the third electrically controlled three-way valve.

[0026] By arranging the third electrically controlled three-way valve and the fourth electrically controlled three-way valve, the flow direction of the heat-conducting medium and the flow rate in each flow direction can be adjusted by using the two, realizing the precise adjustment of the temperature of the first liquid port of the air cooler and the heating outlet water interface.

[0027] In a preferred technical solution of the above heating system, the heat pump unit further includes a second pump body. The liquid return port of the second pump body is communicated with the second liquid port, and the liquid discharge port of the second pump body is communicated with the heating outlet water interface. Description of the Drawings

[0028] The present application will be described below with reference to the drawings. In the drawings:

[0029] Figure 1 It is a system diagram of the heating system of the present application.

[0030] List of Reference Numerals

[0031] 10. Heat circulation component; 11. Hot water supply tank; 12. Heating pipeline; 13. Heat exchange pipe; 14. Buffer tank; 151. First electric control three-way valve; 152. Second electric control three-way valve; 16. First pump body; 171. First on-off valve; 172. Second on-off valve; 18. Check valve; 191. Water inlet pipe; 192. Water outlet pipe;

[0032] 20. Heat pump unit; 21. Compressor; 22. Air cooler; 23. Throttling element; 24. Evaporator; 25. Fan; 26. Four-way valve; 27. Second pump body; 281. Third electric control three-way valve; 282. Fourth electric control three-way valve; 291. Heating return water interface; 292. Heating outlet water interface. Specific implementation manners

[0033] The preferred implementation manners of the present application will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these implementation manners are only used to explain the technical principle of the present application and are not intended to limit the protection scope of the present application.

[0034] It should be noted that in the description of the present application, the terms indicating the direction or position relationship such as "upper", "lower", "left", "right", "inner", "outer", etc. are based on the direction or position relationship shown in the drawings. This is only for convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application. In addition, the terms "first", "second", "third", "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0035] In addition, it should also be noted that in the description of the present application, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0036] First, refer to Figure 1 , and briefly introduce the heat circulation component of the present application. Figure 1 In , the refrigerant flow path is drawn with solid lines, and the heat conduction medium flow path is drawn with dotted lines.

[0037] As Figure 1As shown, to solve the problems of heat waste and low energy efficiency existing in heat pump units with heating and hot water functions, the heat cycle assembly 10 of the present application includes a hot water supply tank 11, a heating pipeline 12, a buffer tank 14, a first electronically controlled three-way valve 151, a water inlet pipe 191, and a water outlet pipe 192. A heat exchange pipe 13 is arranged in the hot water supply tank 11. The first end ( Figure 1 the upper end shown) of the heat exchange pipe 13 is communicated with the water inlet pipe 191, and the second end ( Figure 1 the lower end shown) of the heat exchange pipe 13 is communicated with the first interface ( Figure 1 the right interface shown) of the first electronically controlled three-way valve 151. The buffer tank 14 has a first inlet, a second inlet, and a first outlet. The first inlet ( Figure 1 the lower left interface shown) is communicated with the water inlet pipe 191, and the first outlet ( Figure 1 the right interface shown) is communicated with the first end ( Figure 1 the lower end shown) of the heating pipeline 12. The second end ( Figure 1 the upper end shown) of the heating pipeline 12 is communicated with the water outlet pipe 192. The second interface ( Figure 1 the left interface shown) of the first electronically controlled three-way valve 151 is communicated with the water outlet pipe 192, and the third interface ( Figure 1 the lower interface shown) of the first electronically controlled three-way valve 151 is communicated with the second inlet ( Figure 1 the upper left interface shown) of the buffer tank 14.

[0038] When the heat cycle assembly 10 is in application, a high-temperature heat-conducting medium (such as water, ethylene glycol, or a mixture of the two, etc.) enters from the water inlet pipe 191. Part of the high-temperature heat-conducting medium enters the hot water supply tank 11 to exchange heat with the water in the hot water supply tank 11 and its temperature decreases. The heat-conducting medium with decreased temperature flows to the first electronically controlled three-way valve 151 and is divided into two branches after the first electronically controlled three-way valve 151. The heat-conducting medium in one branch flows to the water outlet pipe 192, and the heat-conducting medium in the other branch enters the buffer tank 14 through the second inlet. Among the high-temperature heat-conducting media entering the heat cycle assembly 10, another part enters the buffer tank 14 through the first inlet, is mixed and temperature-adjusted with the low-temperature heat-conducting medium entering the buffer tank 14 through the second inlet, and then is discharged through the first outlet and enters the heating pipeline 12 to exchange heat with indoor air and its temperature decreases. The heat-conducting medium with decreased temperature flows to the water outlet pipe 192.

[0039] It can be seen that for the heat cycle assembly 10 of the present application, by arranging the buffer tank 14 and the first electronically controlled three-way valve 151, the heat-conducting medium discharged from the heat exchange pipe 13 can be used to enter the buffer tank 14 to adjust the temperature of the heat-conducting medium in the buffer tank 14, realizing the hierarchical utilization of heat and improving the energy efficiency of the system.

[0040] Next, further refer to Figure 1, a specific embodiment of the thermal cycling component 10 of the present application will be introduced.

[0041] In a specific embodiment, the thermal cycling component 10 includes a domestic hot water tank 11, a heating pipeline 12, a buffer tank 14, a first pump body 16, a first electrically controlled three-way valve 151, a second electrically controlled three-way valve 152, a check valve 18, a water inlet pipe 191, and a water outlet pipe 192.

[0042] The domestic hot water tank 11 is used to provide domestic hot water for users. A heat exchange pipe 13 is arranged therein. The first end ( Figure 1 the upper end in this case) of the heat exchange pipe 13 is communicated with the water inlet pipe 191 through a first on-off valve 171. The second end ( Figure 1 the lower end in this case) of the heat exchange pipe 13 is communicated with the first interface ( Figure 1 the right interface in this case) of the first electrically controlled three-way valve 151. The second interface ( Figure 1 the left interface in this case) of the first electrically controlled three-way valve 151 is communicated with the water outlet pipe 192. The buffer tank 14 has a first inlet, a second inlet, and a first outlet. The first inlet is arranged at the lower part or bottom of the buffer tank 14, and the second inlet and the first outlet are arranged at the upper part or top of the buffer tank 14. Among them, the first inlet ( Figure 1 the lower left interface in this case) is communicated with the water inlet through a second on-off valve 172. The first outlet ( Figure 1 the right interface in this case) is communicated with the first end ( Figure 1 the lower end in this case) of the heating pipeline 12. The second end ( Figure 1 the upper end in this case) of the heating pipeline 12 is communicated with the first interface ( Figure 1 the right interface in this case) of the second electrically controlled three-way valve 152. The second interface ( Figure 1 the left interface in this case) of the second electrically controlled three-way valve 152 is communicated with the water outlet pipe 192. Among them, both the first on-off valve 171 and the second on-off valve 172 adopt solenoid valves. The first electrically controlled three-way valve 151 and the second electrically controlled three-way valve 152 can be electromagnetic control valves or electric control valves, and both the first electrically controlled three-way valve 151 and the second electrically controlled three-way valve 152 can achieve flow splitting control. Taking the first electrically controlled three-way valve 151 as an example, by controlling the valve core of the first electrically controlled three-way valve 151, the separate communication between its first interface and the second interface can be achieved, or the separate communication between the first interface and the third interface can be achieved, or the first interface can be simultaneously communicated with the second interface and the third interface, and the outlet flow rates of the second interface and the third interface can be adjusted by changing the position of the valve core.

[0043] Furthermore, the third interfaces of the second electrically controlled three-way valve 152 and the first electrically controlled three-way valve 151 are jointly communicated with the liquid return port of the first pump body 16. The liquid discharge port of the first pump body 16 is communicated with one end of the check valve 18, and the other end of the check valve 18 is communicated with the second inlet of the buffer tank 14.

[0044] In the above setting method, by setting the buffer water tank 14 and the first electric control three-way valve 151, the heat-conducting medium discharged from the heat exchange tube 13 can enter the buffer water tank 14 to adjust the temperature of the heat-conducting medium in the buffer water tank 14, realizing the hierarchical utilization of heat and improving the energy efficiency of the system. The first inlet is arranged at the lower part or the bottom of the buffer water tank 14, and the second inlet and the first outlet are arranged at the upper part or the top of the buffer water tank 14, which is beneficial to improving the mixing uniformity of the heat-conducting medium. By setting the second electric control three-way valve 152, the heat-conducting medium discharged from the heating pipeline 12 can be diverted into the buffer water tank 14 for secondary utilization to adjust the temperature of the heat-conducting medium in the buffer water tank 14. By setting the check valve 18, the heat-conducting medium in the buffer water tank 14 can be prevented from flowing back through the second inlet, improving the operation stability.

[0045] The following refers to Figure 1 to introduce the heating system of the present application.

[0046] As Figure 1 shown, the heating system of the present application includes a heat pump unit 20 and the heat circulation assembly 10 in the above embodiment.

[0047] In a specific embodiment, the heat pump unit 20 includes a heating return water interface 291, a heating outlet water interface 292, a compressor 21, a four-way valve 26, an air cooler 22, a throttling element 23, an evaporator 24, a second pump body 27, a third electric control three-way valve 281 and a fourth electric control three-way valve 282. Among them, the heating outlet water interface 292 and the heating return water interface 291 described in the present application refer to the interfaces where the heat pump unit 20 is connected to the heat circulation assembly 10. Usually, in actual products, the heating outlet water interface 292 and the heating return water interface 291 are arranged on the outer shell of the device. By connecting the water inlet pipe 191 and the water outlet pipe 192 in the pipeline of the heat circulation assembly 10 to the heating outlet water interface 292 and the heating return water interface 291 respectively, the construction of the entire system is realized.

[0048] The four-way valve 26 has four interfaces a, b, c, d. The air cooler 22 is a liquid-cooled heat exchanger, which includes a first refrigerant port ( Figure 1 the lower left port in Figure 1 ), a second refrigerant port ( Figure 1 the upper left port in Figure 1 ), a first liquid port ( Figure 1 the upper right port in Figure 1 ) and a second liquid port ( Figure 1 the lower right port in Figure 1 ). A first heat exchange channel is formed between the first refrigerant port and the second refrigerant port, and a second heat exchange channel is formed between the first liquid port and the second liquid port. Heat exchange can be carried out between the first heat exchange channel and the second heat exchange channel. The evaporator 24 is an air-cooled evaporator 24, such as a finned heat exchanger, etc., and it is equipped with a fan 25. The fan 25 is arranged on the air outlet side of the evaporator 24.

[0049] The exhaust port of the compressor 21 is connected to the interface a of the four-way valve 26, the interface b of the four-way valve 26 is connected to the first refrigerant port of the air cooler 22, and the second refrigerant port of the air cooler 22 is connected to the first port ( Figure 1 The right port in the middle is connected, and the second port of the throttling element 23 ( Figure 1 The left port in the middle) and the first port of the evaporator 24 ( Figure 1 The upper middle port) is connected to the second port of the evaporator 24 ( Figure 1 The middle and lower side port) is connected to the interface c of the four-way valve 26, and the interface d of the four-way valve 26 is connected to the air intake port of the compressor 21. In this way, a refrigerant cycle is formed between the compressor 21, the four-way valve 26, the air cooler 22, the throttling element 23 and the evaporator 24. The working principle of the refrigerant cycle is common knowledge in the art and will not be described in detail in this application.

[0050] The first interface of the third electrically controlled three-way valve 281 ( Figure 1 The right side interface) is connected to the heating return water interface 291, and the second interface ( Figure 1 The first interface (left interface) is connected to the first liquid port of the air cooler 22. The first interface ( Figure 1 The left side interface) is connected to the second liquid port of the air cooler 22, and the second interface ( Figure 1 The right side interface) is connected to the heating water outlet interface 292, and the third port ( Figure 1 The upper side interface) and the third port ( Figure 1 The third electrically controlled three-way valve 281 and the fourth electrically controlled three-way valve 282 are similar to the first electrically controlled three-way valve 151 and the second electrically controlled three-way valve 152, and both can realize flow diversion control, which will not be described in detail here.

[0051] The second pump body 27 is a water pump, a liquid return port of the water pump is communicated with the second liquid port, and a liquid discharge port is communicated with the first interface of the fourth electrically controlled three-way valve 282 .

[0052] The heating system of the present application, by providing a buffer water tank 14 and a first electrically controlled three-way valve 151 in the heat cycle assembly 10, can use the heat-conducting medium discharged from the heat exchange tube 13 to enter the buffer water tank 14 to adjust the temperature of the heat-conducting medium in the buffer water tank 14, realize the cascade utilization of heat, and improve the energy efficiency of the system. By providing a third electrically controlled three-way valve 281 and a fourth electrically controlled three-way valve 282, the two can be used to adjust the flow direction of the heat-conducting medium and the flow rate in each flow direction, so as to achieve precise temperature adjustment of the first liquid port of the air cooler 22 and the heating water outlet interface 292.

[0053] Combine the following Figure 1, the working principle of the heating system of the present application will be introduced.

[0054] As Figure 1 shown, in a specific working process, the compressor 21, the fan 25, the first pump body 16 and the second pump body 27 are started and operated, the first on-off valve 171 and the second on-off valve 172 are opened, and the valve cores of the first electric control three-way valve 151, the second electric control three-way valve 152, the third electric control three-way valve 281 and the fourth electric control three-way valve 282 all move to the shunt position. At this time, the system conducts two independent cycles: the refrigerant cycle and the medium cycle.

[0055] In the refrigerant cycle, the refrigerant discharged from the compressor 21 sequentially passes through the four-way valve 26, the air cooler 22, the throttling element 23, the evaporator 24 and the four-way valve 26 and returns to the compressor 21. The refrigerant releases heat when passing through the air cooler 22 and absorbs heat when passing through the evaporator 24.

[0056] In the medium cycle, the heat-conducting medium exchanges heat with the refrigerant in the air cooler 22 and thus the temperature rises. The heat-conducting medium after heat exchange enters the fourth electric control three-way valve 282 under the pumping of the second pump body 27 and is mixed and temperature-adjusted with the heat-conducting medium flowing back from the third electric control three-way valve 281, and then is discharged from the heat pump unit 20 through the heating water outlet interface 292 and enters the heat cycle assembly 10 through the water inlet pipe 191. Among the heat-conducting medium entering the heat cycle assembly 10, a part passes through the first on-off valve 171 and enters the hot water storage tank 11 to exchange heat with the water in the hot water storage tank 11 and the temperature decreases. The heat-conducting medium with decreased temperature flows to the first electric control three-way valve 151, and is divided into two branches after the first electric control three-way valve 151. One branch returns to the heat pump unit 20 through the water outlet pipe 192 and the heating water return interface 291, and the other branch enters the buffer water tank 14 through the first pump body 16. Among the heat-conducting medium entering the heat cycle assembly 10, another part passes through the second on-off valve 172 and enters the buffer water tank 14, is mixed and temperature-adjusted with the low-temperature heat-conducting medium pumped into the buffer water tank 14 by the first pump body 16, and then enters the heating pipeline 12 to exchange heat with the indoor air and the temperature decreases. The heat-conducting medium with decreased temperature enters the second electric control three-way valve 152, and is divided into two branches after the second electric control three-way valve 152. One branch returns to the heat pump unit 20 through the water outlet pipe 192 and the heating water return interface 291, and the other branch enters the buffer water tank 14 through the first pump body 16. The heat-conducting medium entering the heat pump unit 20 through the heating water return interface 291 is also divided into two branches. The heat-conducting medium in one branch flows to the fourth electric control three-way valve 282 to be mixed and temperature-adjusted with the heat-conducting medium from the air cooler 22 and then is discharged from the heat pump unit 20. The heat-conducting medium in the other branch enters the air cooler 22 to participate in heat exchange again.

[0057] It should be noted that the specific type of refrigerant is not limited in the above embodiments, but this is not unclear. Those skilled in the art can adjust the specific type of refrigerant according to needs so that this application is applicable to specific application scenarios. For example, the refrigerants applicable to this application include but are not limited to Freon, carbon dioxide, etc.

[0058] Of course, the above working principle only introduces a possible working process of the heating system. Those skilled in the art can adjust the working states of the components therein so that this application is applicable to more specific application scenarios. For example, those skilled in the art can adjust the opening and closing of the first on-off valve 171 and the second on-off valve 172 so that the heating system only operates in one of the hot water heating and heating modes. For another example, those skilled in the art can also adjust the spool positions of the first electric three-way valve 151, the second electric three-way valve 152, the third electric three-way valve 281 and the fourth electric three-way valve 282 to adjust the flow direction of the heat transfer medium, etc.

[0059] It should also be noted that the above preferred embodiments are only used to illustrate the principle of this application and are not intended to limit the protection scope of this application. Without departing from the principle of this application, those skilled in the art can adjust the above setting methods so that this application can be applicable to more specific application scenarios.

[0060] For example, in another alternative embodiment, although the above embodiments are introduced in combination with the first electric three-way valve 151, the second electric three-way valve 152, the third electric three-way valve 281 and the fourth electric three-way valve 282, except for the first electric three-way valve 151, the remaining electric three-way valves can all be omitted, or only one or several of them can be set, or the above one or several can be replaced with two-way valves. This adjustment only has a certain impact on the control accuracy of the heating system, but does not deviate from the principle of this application.

[0061] For another example, in another alternative embodiment, although the above embodiments are introduced by taking the first electric three-way valve 151 and the second electric three-way valve 152 being set in the heat circulation assembly 10 and the third electric three-way valve 281 and the fourth electric three-way valve 282 being set in the heat pump unit 20 as an example, the setting positions of the first electric three-way valve 151, the second electric three-way valve 152, the third electric three-way valve 281 and the fourth electric three-way valve 282 are not fixed. Those skilled in the art can adjust their setting positions. For example, all four electric three-way valves can be set in the heat pump unit 20 at the same time, or can be set in the heat circulation assembly 10 at the same time, or the four electric three-way valves can be arbitrarily distributed between the heat pump unit 20 and the heat circulation assembly 10.

[0062] For another example, in another alternative embodiment, although the above embodiment is introduced by taking the second pump body 27 and the four-way valve 26 provided in the heat pump unit 20 as an example, the setting of the second pump body 27 and the four-way valve 26 is not necessary, and those skilled in the art can selectively omit one or both of them.

[0063] For another example, in another alternative embodiment, although the above embodiment is introduced by taking the first on-off valve 171 and the second on-off valve 172 as an example, the setting of the first on-off valve 171 and the second on-off valve 172 is not necessary, and in some embodiments, any one or both of them can also be omitted. In addition, in addition to solenoid valves, the first on-off valve 171 and the second on-off valve 172 can also adopt other forms of electrically controlled valves or even manual valves.

[0064] For another example, in another alternative embodiment, the setting of the first pump body 16 is not necessary, and those skilled in the art can choose whether to set the first pump body 16 based on the specific application scenario.

[0065] For another example, in another alternative embodiment, although the above embodiment specifically introduces the positions of the first inlet, the second inlet and the first outlet in the buffer water tank 14, this is only one possible embodiment, and those skilled in the art can adjust the positions of the above three interfaces, and such adjustment does not deviate from the principle of the present application.

[0066] For another example, in another alternative embodiment, the setting of the check valve 18 is not necessary. In other embodiments, those skilled in the art can omit the setting of the valve body, or can replace the valve body with, for example, a one-way valve, a solenoid valve, etc.

[0067] Of course, the above alternative embodiments can be used in cross combination with each other, and between the alternative embodiments and the preferred embodiments, so as to combine new embodiments to be applicable to more specific application scenarios.

[0068] In addition, those skilled in the art can understand that although some of the embodiments described herein include certain features included in other embodiments rather than other features, the combination of the features of different embodiments means that it is within the scope of the present application and forms different embodiments. For example, in the claims of the present application, any one of the claimed embodiments can be used in any combination.

[0069] So far, the technical solution of the present application has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present application is obviously not limited to these specific embodiments. Without departing from the principle of the present application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the present application.

Claims

1. A thermal cycle component, characterized in that: The thermal cycle assembly comprises: Inlet and outlet pipes; A hot water tank, wherein a heat exchange tube is disposed in the hot water tank, and a first end of the heat exchange tube is connected to the water inlet pipe; a buffer water tank, the buffer water tank having a first inlet, a second inlet and a first outlet, the first inlet being in communication with the water inlet pipe; A heating pipeline, wherein a first end of the heating pipeline is connected to the first outlet, and a second end of the heating pipeline is connected to the water outlet pipe; A first electrically controlled three-way valve, wherein the first interface of the first electrically controlled three-way valve is connected to the second end of the heat exchange tube, the second interface of the first electrically controlled three-way valve is connected to the water outlet pipe, and the third interface of the first electrically controlled three-way valve is connected to the second inlet of the buffer water tank.

2. The thermal cycle assembly according to claim 1, characterized in that The first inlet is arranged at the lower part or the bottom of the buffer water tank, and the second inlet and the first outlet are arranged at the upper part or the top of the buffer water tank.

3. The thermal cycle assembly according to claim 1, characterized in that The thermal circulation component also includes a second electrically controlled three-way valve, a first interface of the second electrically controlled three-way valve is connected to the second end of the heating pipeline, a second interface of the second electrically controlled three-way valve is connected to the water outlet pipe, and a third interface of the second electrically controlled three-way valve is connected to the second inlet of the buffer water tank.

4. The thermal cycle assembly according to claim 1, characterized in that The thermal cycle component also includes a first pump body, a liquid return port of the first pump body is connected to the third interface of the first electrically controlled three-way valve, and a liquid discharge port of the first pump body is connected to the second inlet of the buffer water tank.

5. The thermal cycle assembly according to claim 1, characterized in that The thermal cycle component further includes a first on-off valve, one end of which is communicated with the water inlet pipe, and the other end of which is communicated with the first end of the heat exchange pipe.

6. The thermal cycle assembly according to claim 1, characterized in that The thermal cycle component further includes a second on-off valve, one end of which is connected to the water inlet pipe, and the other end of which is connected to the first inlet.

7. The thermal cycle assembly according to claim 1, characterized in that The thermal cycle component also includes a check valve, which is arranged on a pipeline between the third interface of the first electrically controlled three-way valve and the second inlet of the buffer water tank.

8. A heating system, characterized in that: The heating system comprises a heat pump unit and a heat cycle component as described in any one of claims 1 to 7, The heat pump unit includes a heat return water interface, a heat outlet water interface, and a compressor, an air cooler, a throttling element and an evaporator connected by a refrigerant pipeline. The air cooler has a first refrigerant port, a second refrigerant port, a first liquid port and a second liquid port. A first heat exchange channel is formed between the first refrigerant port and the second refrigerant port, and a second heat exchange channel is formed between the first liquid port and the second liquid port. Heat exchange can be performed between the first heat exchange channel and the second heat exchange channel. The first liquid port is connected to the heat return water interface, and the second liquid port is connected to the heat outlet water interface. The water inlet pipe and the water outlet pipe of the heat circulation component are respectively connected to the heating water outlet interface and the heating water return interface.

9. The heating system according to claim 8, characterized in that: The heat pump unit also includes a third electrically controlled three-way valve and a fourth electrically controlled three-way valve, the first interface of the third electrically controlled three-way valve is connected to the heating return water interface, the second interface of the third electrically controlled three-way valve is connected to the first liquid port, the first interface of the fourth electrically controlled three-way valve is connected to the second liquid port, the second interface of the fourth electrically controlled three-way valve is connected to the heating water outlet interface, and the third port of the fourth electrically controlled three-way valve is connected to the third port of the third electrically controlled three-way valve.

10. The heating system according to claim 8, characterized in that: The heat pump unit further comprises a second pump body, a liquid return port of the second pump body is in communication with the second liquid port, and a liquid discharge port of the second pump body is in communication with the heating water outlet interface.

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