Segmented heating system

Abstract

The embodiment of the utility model provides a sectioned heating system which comprises a heat pump system and a water system, the heat pump system is provided with a first coil pipe and a second coil pipe, the water system is provided with a third coil pipe, a fourth coil pipe, a regulating valve, first heat supply equipment and second heat supply equipment, the third coil pipe exchanges heat with the first coil pipe, and the fourth coil pipe exchanges heat with the second heat supply equipment. The fourth coil pipe exchanges heat with the second coil pipe; an inlet of the adjusting valve communicates with an outlet of the third coil pipe, one outlet of the adjusting valve communicates with an inlet of the third coil pipe through the first heat supply equipment, and the other outlet of the adjusting valve communicates with the inlet of the third coil pipe sequentially through the fourth coil pipe and the second heat supply equipment. According to the embodiment of the invention, a two-section heating mode is adopted, the water heated for the first time can be supplied to the first heat supply equipment with a relatively low water temperature requirement, and the water heated for the second time can also be supplied to the second heat supply equipment with a relatively high water temperature requirement, so that sectional heating is realized; all the advantages of the two kinds of heating equipment can be compatible, and the using requirements of different users are met.

Description

Technical Field

[0001] The present application relates to the technical field of heating systems, and in particular to a zoned heating system. Background Art

[0002] In the related art, the heating equipment on the market includes high water temperature heating equipment and medium water temperature heating equipment. For example, high water temperature heating equipment can be radiators or domestic water heaters, and medium water temperature heating equipment can be floor heating pipes. Each heating equipment has its own advantages. For example, the installation cost of radiators is low, which is suitable for families with limited economic conditions. Radiators dissipate heat quickly and can quickly reach the ideal temperature. The maintenance cost of radiators is low. Floor heating pipes are hidden under the ground and will not occupy indoor space, making the indoor space more tidy and beautiful. Floor heating pipes use radiant heating, which can dissipate heat more evenly and make the indoor temperature distribution more comfortable. Floor heating pipes use low-temperature heat sources for heating, which can reduce energy consumption and reduce the emission of pollutants such as carbon dioxide, and have good energy-saving and environmental protection effects.

[0003] However, there are currently no products that are compatible with all the advantages of the above two heating devices, and are unable to meet the needs of different users. Utility Model Content

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a zoned heating system, which is designed to be compatible with high water temperature heating equipment and medium water temperature heating equipment, so as to meet the use needs of different users.

[0005] In a first aspect, an embodiment of the present application provides a zoned heating system, comprising:

[0006] A heat pump system is provided with a first coil and a second coil;

[0007] A water system, provided with a third coil, a fourth coil, a regulating valve, a first heating device and a second heating device, wherein the third coil is used to exchange heat with the first coil, and the fourth coil is used to exchange heat with the second coil; an inlet of the regulating valve is connected to an outlet of the third coil, one outlet of the regulating valve is connected to an inlet of the third coil through the first heating device, and the other outlet is connected to an inlet of the third coil through the fourth coil and the second heating device in sequence;

[0008] Wherein, the outlet water temperature of the fourth coil is higher than the outlet water temperature of the third coil.

[0009] According to some embodiments of the present application, a common buffer water tank is further included, wherein the inlet of the common buffer water tank is connected to the outlets of the first heating device and the second heating device, and the outlet of the common buffer water tank is connected to the inlet of the third coil.

[0010] According to some embodiments of the present application, the present invention further includes at least one of the following:

[0011] A first independent water tank and a first water pump, wherein an inlet of the first independent water tank is connected to the regulating valve, an outlet is connected to the inlet of the first heating device, another inlet is connected to the outlet of the first heating device, and another outlet is connected to the inlet of the third coil, and the first water pump is arranged at the outlet side or the inlet side of the first heating device;

[0012] A second independent water tank and a second water pump, wherein an inlet of the second independent water tank is connected to the outlet of the fourth coil, an outlet is connected to the inlet of the second heating equipment, another inlet is connected to the outlet of the second heating equipment, and another outlet is connected to the inlet of the third coil, and the second water pump is arranged on the outlet side or the inlet side of the second heating equipment.

[0013] According to some embodiments of the present application, a main circulation water pump is further included, and the main circulation water pump is arranged on the inlet side or the outlet side of the third coil.

[0014] According to some embodiments of the present application, the present invention further includes at least one of the following:

[0015] a first bypass and a first pressure differential bypass valve, wherein the first pressure differential bypass valve is installed on the first bypass, one end of the first bypass is connected to the inlet of the first heating device, and the other end is connected to the outlet of the first heating device;

[0016] A second bypass and a second pressure differential bypass valve, wherein the second pressure differential bypass valve is installed on the second bypass, one end of the second bypass is connected to the inlet of the second heating device, and the other end is connected to the outlet of the second heating device.

[0017] According to some embodiments of the present application, an electric heating tank is further included, and the electric heating tank is arranged between the outlet of the fourth coil and the inlet of the second heating device.

[0018] According to some embodiments of the present application, a water separator is further included, wherein an inlet of the water separator is connected to an outlet of the regulating valve, and an outlet of the water separator is connected to an inlet of the first heating device.

[0019] According to some embodiments of the present application, the first coil and the third coil are connected in a co-current or counter-current heat exchange manner; the second coil and the fourth coil are connected in a counter-current heat exchange manner.

[0020] According to some embodiments of the present application, one of the following is included:

[0021] The first coil and the third coil are installed in a first heat exchanger, and the second coil and the fourth coil are installed in a second heat exchanger;

[0022] The first coil, the third coil, the second coil and the fourth coil are all installed in the same heat exchanger.

[0023] According to some embodiments of the present application, the first heating device includes a floor heating pipe, and the second heating device includes a radiator or a water heater.

[0024] According to some embodiments of the present application, the heat pump system further includes a compressor and an outdoor unit, and the refrigerant discharged from the exhaust port of the compressor sequentially passes through the second coil, the first coil and the outdoor unit and then flows back to the return air port of the compressor.

[0025] According to the technical solution of the embodiment of the present application, at least the following beneficial effects are achieved: the embodiment of the present application adopts a two-stage heating method, specifically, the first coil and the third coil complete the primary heating, and the second coil and the fourth coil complete the secondary heating. Since the water temperature after the secondary heating is higher than the water temperature after the primary heating, the embodiment of the present application can supply the water after the primary heating to the first heating equipment with a relatively low water temperature requirement, and can also supply the water after the secondary heating to the second heating equipment with a relatively high water temperature requirement, thereby realizing segmented heating, and is compatible with heating equipment with different water temperature requirements. It can be compatible with all the advantages of the above two heating equipment and meet the usage needs of different users.

[0026] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings are used to provide further understanding of the technical solution of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the present application and do not constitute a limitation on the technical solution of the present application.

[0028] Figure 1 It is a structural schematic diagram of a sectional heating system with floor heating pipes and radiators and a shared buffer water tank provided by an embodiment of the present application;

[0029] Figure 2 It is a structural schematic diagram of a sectional heating system with floor heating pipes and radiators and using independent water tanks, provided by an embodiment of the present application;

[0030] Figure 3 It is a structural schematic diagram of a sectional heating system provided by an embodiment of the present application, which has both floor heating pipes and radiators and only the floor heating pipes use independent water tanks;

[0031] Figure 4 It is a structural schematic diagram of a sectional heating system with both floor heating pipes and radiators provided by an embodiment of the present application, wherein only the radiators use independent water tanks;

[0032] Figure 5 It is a structural schematic diagram of a segmented heating system that has floor heating pipes and a domestic hot water system and shares a buffer water tank, provided by an embodiment of the present application. DETAILED DESCRIPTION

[0033] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0034] In the description of the present application, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0035] In the description of this application, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0036] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0037] In some cases, the heating equipment on the market includes high-water-temperature heating equipment and medium-water-temperature heating equipment. For example, high-water-temperature heating equipment can be radiators or domestic water heaters, and medium-water-temperature heating equipment can be floor heating pipes. Each type of heating equipment has its own advantages. For example, the installation cost of radiators is low, which is suitable for families with limited economic conditions. Radiators dissipate heat quickly and can quickly reach the ideal temperature. The maintenance cost of radiators is low. Floor heating pipes are hidden under the ground and will not occupy indoor space, making the indoor space more tidy and beautiful. Floor heating pipes use radiant heating, which can dissipate heat more evenly and make the indoor temperature distribution more comfortable. Floor heating pipes use low-temperature heat sources for heating, which can reduce energy consumption and reduce the emission of pollutants such as carbon dioxide, and have good energy-saving and environmental protection effects.

[0038] Specifically, wall-mounted boiler radiator heating is a relatively common household heating method. It heats the indoor air by transferring the heat generated by the combustion of gas or other fuels to the radiator. A wall-mounted boiler is a gas boiler installed on the wall, which can provide heating and hot water for the entire room or apartment. A radiator is a device similar to a radiator, usually installed on the wall of a room, which transfers heat to the indoor air through radiation convection and natural convection to achieve heating. The advantages of this heating method are that it takes up less space, is easy to install, can quickly reach the preset temperature, and has a good heating effect. The circulating hot water heating temperature flowing through the radiator is generally around 75°C, so the surface temperature of the radiator is relatively high. In addition to quickly heating up the room, it also has other uses, such as baking clothes and sheets, so it is widely loved by users.

[0039] In addition, household water machine heat pump heating is a way of heating by transferring heat energy from the air to water using heat pump technology. It increases the temperature of low-temperature heat energy in the air by compressing it, and then releases the high-temperature heat energy into the water, thereby providing hot water heating. At present, heat pump heating has been widely used worldwide, especially in Europe and North America. In China, heat pump heating has also gradually been popularized and promoted. The heat pump heating system needs to rely on the ambient temperature during operation. When the ambient temperature is too low, the water supply temperature (30-55°C) and efficiency of the system will decrease. Therefore, the mainstream of heat pump heating on the market is still the form of terminal floor heating pipes. Floor heating pipe heating requires laying pipes under the ground, which requires excavation and laying of the ground, increasing the installation cost. Floor heating pipe heating takes a certain amount of time to raise the indoor temperature, so the response speed is relatively slow. Floor heating pipe heating can make the indoor temperature evenly distributed, and there will be no local uneven cold and heat, thereby improving the comfort of the room. Therefore, this heating method is becoming more and more common and popular among the public.

[0040] From the perspective of the above two heating systems, each has its own advantages and disadvantages. The floor heating pipes are hidden under the ground and will not occupy the indoor space, making the indoor space more tidy and beautiful. The floor heating pipes use radiant heating, which can dissipate heat more evenly, making the indoor temperature distribution more comfortable. The floor heating pipes use low-temperature heat sources for heating, which can reduce energy consumption and reduce the emission of pollutants such as carbon dioxide, and have better energy-saving and environmental protection effects. The installation cost of radiators is low, which is suitable for families with limited economic conditions. Radiators dissipate heat quickly and can quickly reach the ideal temperature, and the maintenance cost of radiators is low.

[0041] In addition, the most economical and energy-saving way of household heating on the market is the heat pump household water machine. Since the water temperature heated by the heat pump is limited by the refrigerant and the ambient temperature, the maximum heating water temperature of such products on the market generally does not exceed 55°C. Therefore, such heating systems generally use floor heating pipes at the end. The main problem with floor heating pipe heating is that since the floor heating pipes are buried in the floor or wall, these objects have great thermal inertia. During the heat absorption process, their own temperature rises slowly, which makes the heat dissipation rate slow. It takes a certain amount of time for the room to reach the ideal temperature. In the heating system of radiators, since the temperature of the heating circulating water is relatively high, most of the terminal radiators have the demand for baking, which cannot be met by floor heating pipe heating.

[0042] Based on the above situation, there is no product currently in use that can be compatible with all the advantages of the above two heating systems. In this regard, this application proposes a zoned heating system that is designed to be compatible with high water temperature heating equipment and medium water temperature heating equipment, thereby meeting the needs of different users.

[0043] The various embodiments of the segmented heating system of the present application are further described below in conjunction with the accompanying drawings.

[0044] In one embodiment, if Figures 1 to 5 As shown, the sectional heating system of the embodiment of the present application includes but is not limited to a heat pump system and a water system. Specifically, the heat pump system is provided with a first coil and a second coil, and the water system is provided with a third coil, a fourth coil, a regulating valve 210, a first heating device 230 and a second heating device 270. The third coil is used for heat exchange with the first coil, and the fourth coil is used for heat exchange with the second coil; the inlet of the regulating valve 210 is connected to the outlet of the third coil, one outlet of the regulating valve 210 is connected to the inlet of the third coil through the first heating device 230, and the other outlet is connected to the inlet of the third coil through the fourth coil and the second heating device 270 in sequence; wherein, the outlet water temperature of the fourth coil is higher than the outlet water temperature of the third coil.

[0045] In one embodiment, the first coil and the third coil are connected in a co-current or counter-current heat exchange mode; the second coil and the fourth coil are connected in a counter-current heat exchange mode. Specifically, the first coil and the third coil generally use a co-current heat exchange mode, while the second coil and the fourth coil use a counter-current heat exchange mode to ensure that the water temperature coming out of the counter-current heat exchanger can meet the high water temperature requirement.

[0046] In one embodiment, if Figures 1 to 5 As shown, the first coil and the third coil are installed in the first heat exchanger 300, and the second coil and the fourth coil are installed in the second heat exchanger 400, that is, two heat exchangers can be set in the embodiment of the present application, the first heat exchanger 300 is used for the first stage heating, and the second heat exchanger 400 is used for the second stage heating.

[0047] Alternatively, the first coil, the third coil, the second coil and the fourth coil are all installed in the same heat exchanger, that is, the embodiment of the present application can be integrated into a heat exchanger, which has both the first stage heating function and the second stage heating function.

[0048] In one embodiment, the first heating device 230 may be: Figures 1 to 5 The floor heating pipe shown may also be the end of a ceiling radiation heating system, or other medium water temperature heating equipment, and the embodiments of the present application do not specifically limit this.

[0049] In one embodiment, the second heating device 270 may be: Figures 1 to 4 The radiator shown can also be Figure 5 The water heater shown may also be other heating equipment with higher water temperature, and the embodiments of the present application do not specifically limit this.

[0050] It is worth noting that the embodiment of the present application adopts a two-stage heating method, specifically, the first coil and the third coil complete the primary heating, and the second coil and the fourth coil complete the secondary heating. Since the water temperature after the secondary heating is higher than the water temperature after the primary heating, the embodiment of the present application can supply the water after the primary heating to the first heating equipment 230 with a relatively low water temperature requirement, and can also supply the water after the secondary heating to the second heating equipment 270 with a relatively high water temperature requirement, thereby realizing segmented heating and being compatible with heating equipment with different water temperature requirements. It can be compatible with all the advantages of the above two heating equipments and meet the usage needs of different users.

[0051] In one embodiment, if Figure 1 As shown, Figure 1It is a structural schematic diagram of a segmented heating system with floor heating pipes and radiators and a shared buffer water tank 251 provided by an embodiment of the present application; the segmented heating system also includes a shared buffer water tank 251, the inlet of the shared buffer water tank 251 is connected to the outlets of the first heating equipment 230 and the second heating equipment 270, and the outlet of the shared buffer water tank 251 is connected to the inlet of the third coil.

[0052] In one embodiment, if Figure 2 As shown, Figure 2 It is a structural schematic diagram of a segmented heating system provided by an embodiment of the present application, which has both floor heating pipes and radiators and both use independent water tanks; the segmented heating system also includes a first independent water tank 252, a first water pump 291, a second independent water tank 253 and a second water pump 292, an inlet of the first independent water tank 252 is connected to the regulating valve 210, an outlet is connected to the inlet of the first heating equipment 230, another inlet is connected to the outlet of the first heating equipment 230, and another outlet is connected to the inlet of the third coil, and the first water pump 291 is arranged on the outlet side or inlet side of the first heating equipment 230; an inlet of the second independent water tank 253 is connected to the outlet of the fourth coil, an outlet is connected to the inlet of the second heating equipment 270, another inlet is connected to the outlet of the second heating equipment 270, and another outlet is connected to the inlet of the third coil, and the second water pump 292 is arranged on the outlet side or inlet side of the second heating equipment 270.

[0053] In one embodiment, if Figure 3 As shown, Figure 3 It is a structural schematic diagram of a segmented heating system provided by an embodiment of the present application, which has both floor heating pipes and radiators and only the floor heating pipes use independent water tanks; the segmented heating system also includes a first independent water tank 252 and a first water pump 291, an inlet of the first independent water tank 252 is connected to the regulating valve 210, an outlet is connected to the inlet of the first heating equipment 230, another inlet is connected to the outlet of the first heating equipment 230, and another outlet is connected to the inlet of the third coil, and the first water pump 291 is arranged on the outlet side or the inlet side of the first heating equipment 230.

[0054] In one embodiment, if Figure 4 As shown, Figure 4It is a structural schematic diagram of a segmented heating system provided by an embodiment of the present application, which has both floor heating pipes and radiators and only the radiators use independent water tanks; the segmented heating system also includes a second independent water tank 253 and a second water pump 292, an inlet of the second independent water tank 253 is connected to the outlet of the fourth coil, an outlet is connected to the inlet of the second heating equipment 270, another inlet is connected to the outlet of the second heating equipment 270, and another outlet is connected to the inlet of the third coil, and the second water pump 292 is arranged on the outlet side or the inlet side of the second heating equipment 270.

[0055] In one embodiment, if Figures 1 to 5 As shown, the zoned heating system also includes a main circulation water pump 293, which is arranged at the inlet side or the outlet side of the third coil.

[0056] In one embodiment, if Figures 1 to 5 As shown, the segmented heating system also includes a first bypass 240 and a first pressure differential bypass valve 241. The first pressure differential bypass valve 241 is installed on the first bypass 240. One end of the first bypass 240 is connected to the inlet of the first heating equipment 230, and the other end is connected to the outlet of the first heating equipment 230.

[0057] In one embodiment, if Figures 1 to 5 As shown, the segmented heating system also includes a second bypass 280 and a second pressure differential bypass valve 281. The second pressure differential bypass valve 281 is installed on the second bypass 280. One end of the second bypass 280 is connected to the inlet of the second heating equipment 270, and the other end is connected to the outlet of the second heating equipment 270.

[0058] In one embodiment, if Figures 1 to 5 As shown, the segmented heating system also includes an electric heating tank 260, which is arranged between the outlet of the fourth coil and the inlet of the second heating device 270.

[0059] In one embodiment, if Figures 1 to 5 As shown, the sectional heating system further includes a water distributor 220 , an inlet of the water distributor 220 is connected to an outlet of the regulating valve 210 , and an outlet of the water distributor 220 is connected to an inlet of the first heating device 230 .

[0060] In one embodiment, if Figures 1 to 5 As shown, the heat pump system further includes a compressor 110 and an outdoor unit 120 . The refrigerant discharged from the exhaust port of the compressor 110 passes through the second coil, the first coil and the outdoor unit 120 in sequence and then flows back to the return air port of the compressor 110 .

[0061] Based on the above-mentioned sectional heating systems, overall embodiments of the sectional heating systems of the present application are presented below.

[0062] like Figure 1 As shown, the main circulating water pump 293 first passes the circulating water in the shared buffer water tank 251 through the first heat exchanger 300. After absorbing heat, the water temperature gradually rises. After passing through the regulating valve 210, part of the circulating water is sent to the floor heating pipe through the water distributor 220, and part of it passes through the second heat exchanger 400. In the second heat exchanger 400, due to the countercurrent heat exchange method adopted, the sensible heat of the refrigerant and the regulation of the water flow are mainly absorbed, so the circulating water will heat up quickly and then be sent to the radiator. The high-temperature circulating hot water in the radiator and the low-temperature circulating hot water in the floor heating pipe are collected and returned to the shared buffer water tank 251. After either the radiator or the floor heating pipe reaches the set temperature, the circulating water of the corresponding route will flow through the pressure difference bypass valve until both circulating waters meet the set temperature, and the heat pump will stop at this time. The main function of the electric heating tank 260 is that the circulating water temperature rises slowly under ultra-low ambient temperature, and it is turned on and off according to the corresponding control of the system. The first heat exchanger 300 and the second heat exchanger 400 may be separated or integrated into one.

[0063] like Figure 2 As shown, the main circulating water pump 293 first passes the circulating water through the first heat exchanger 300. After absorbing heat, the water temperature gradually rises. After passing through the regulating valve 210, part of the circulating water enters the first independent water tank 252, and part of the circulating water passes through the second heat exchanger 400. In the second heat exchanger 400, due to the countercurrent heat exchange method adopted, the sensible heat of the refrigerant is mainly absorbed, and the water flow is regulated, the circulating water will quickly heat up and then enter the second independent water tank 253. Under the action of the main circulating water pump 293, the high and low temperature hot water in the first independent water tank 252 and the second independent water tank 253 are collected and then flow through the main circulating water pump 293. The low-temperature hot water in the first independent water tank 252 is sent to the floor heating pipe through the water distributor 220 under the action of the first water pump 291, and the high-temperature hot water in the second independent water tank 253 is sent to the radiator under the action of the second water pump 292. After either the radiator or the floor heating pipe reaches the set temperature, the circulating water of the corresponding route will flow through the pressure difference bypass valve until both circulating water routes meet the set temperature, at which time the heat pump stops. The main function of the electric heating tank 260 is that the circulating water temperature rises slowly under ultra-low ambient temperature, and it is turned on and off according to the corresponding control of the system. The first heat exchanger 300 and the second heat exchanger 400 can be separated or integrated into one.

[0064] like Figure 3As shown, the main circulating water pump 293 first passes the circulating water through the first heat exchanger 300. After absorbing heat, the water temperature gradually rises. After passing through the regulating valve 210, part of the circulating water enters the first independent water tank 252, and part passes through the second heat exchanger 400. In the second heat exchanger 400, due to the countercurrent heat exchange method, the circulating water mainly absorbs the sensible heat of the refrigerant and the regulation of the water flow, so the circulating water will quickly heat up and then enter the radiator. Under the action of the main circulating water pump 293, the high and low temperature hot water in the first independent water tank 252 and the radiator are collected and then flow through the main circulating water pump 293. The low temperature hot water in the first independent water tank 252 is sent to the floor heating pipe through the water distributor 220 under the action of the first water pump 291. After either the radiator or the floor heating pipe reaches the set temperature, the circulating water of the corresponding route will flow through the pressure difference bypass valve until both circulating waters meet the set temperature, and the heat pump is shut down at this time. The main function of the electric heating tank 260 is to slow down the temperature rise of the circulating water under ultra-low ambient temperature, and at this time, it is turned on and off according to the corresponding control of the system. The first heat exchanger 300 and the second heat exchanger 400 can be separated or integrated into one.

[0065] like Figure 4 As shown, the main circulating water pump 293 first passes the circulating water through the first heat exchanger 300. After absorbing heat, the water temperature gradually rises, passes through the regulating valve 210, and part of the circulating water flows through the water distributor 220 and then flows into the floor heating pipe, and part of the circulating water flows through the second heat exchanger 400. In the second heat exchanger 400, due to the countercurrent heat exchange method, the circulating water mainly absorbs the sensible heat of the refrigerant and the regulation of the water flow, so the circulating water will quickly heat up and then enter the second independent water tank 253. Under the action of the main circulating water pump 293, the high and low temperature hot water in the floor heating pipe and the second independent water tank 253 are collected and then flow through the main circulating water pump 293. The high temperature hot water in the second independent water tank 253 is sent to the radiator under the action of the second water pump 292. After either the radiator or the floor heating pipe reaches the set temperature, the circulating water of the corresponding path will flow through the pressure difference bypass valve until both circulating waters meet the set temperature, and the heat pump is shut down at this time. The main function of the electric heating tank 260 is to slow down the temperature rise of the circulating water under ultra-low ambient temperature, and at this time, it is turned on and off according to the corresponding control of the system. The first heat exchanger 300 and the second heat exchanger 400 can be separated or integrated into one.

[0066] like Figure 5As shown, the main circulating water pump 293 first passes the circulating water in the buffer water tank through the first heat exchanger 300. After absorbing heat, the water temperature gradually rises. After passing through the regulating valve 210, part of the circulating water is sent to the floor heating pipe through the water distributor 220, and part of it passes through the second heat exchanger 400. In the second heat exchanger 400, due to the countercurrent heat exchange method adopted, the sensible heat of the refrigerant is mainly absorbed, and the water flow is regulated, so the circulating water will quickly heat up and then be sent to the coil water tank of the water heater to heat domestic hot water. The high-temperature circulating hot water in the coil and the low-temperature circulating hot water in the floor heating pipe are collected and returned to the shared buffer water tank 251. After the floor heating pipe system reaches the set temperature, the circulating water in the floor heating pipe flows through the pressure difference bypass valve, and although the water temperature in the coil water tank reaches the set temperature, the high-temperature circulating water still passes through the coil until both circulating waters meet the set temperature, at which time the heat pump stops. The main function of the electric heating tank 260 is to slow down the rise of circulating water temperature under ultra-low ambient temperature. At this time, it is turned on and off according to the corresponding control of the system. The first heat exchanger 300 and the second heat exchanger 400 can be separated or integrated. If the coil water tank needs to operate alone, the water circuit of the floor heating pipe system is closed by the regulating valve 210, and the circulating water circuit only releases heat in the coil to heat the domestic hot water in the water tank.

[0067] The above is a specific description of the preferred implementation of the present application, but the present application is not limited to the above implementation mode. Technical personnel familiar with the field can also make various equivalent modifications or substitutions under the shared conditions without violating the spirit of the present application. These equivalent modifications or substitutions are all included in the scope defined by the claims of the present application.

Claims

1. A zoned heating system, characterized in that: include: A heat pump system is provided with a first coil and a second coil; A water system, provided with a third coil, a fourth coil, a regulating valve, a first heating device and a second heating device, wherein the third coil is used to exchange heat with the first coil, and the fourth coil is used to exchange heat with the second coil; an inlet of the regulating valve is connected to an outlet of the third coil, one outlet of the regulating valve is connected to an inlet of the third coil through the first heating device, and the other outlet is connected to an inlet of the third coil through the fourth coil and the second heating device in sequence; Wherein, the outlet water temperature of the fourth coil is higher than the outlet water temperature of the third coil.

2. The sectional heating system according to claim 1 is characterized in that: It also includes a common buffer water tank, the inlet of which is connected to the outlets of the first heat supply device and the second heat supply device, and the outlet of which is connected to the inlet of the third coil.

3. The sectional heating system according to claim 1, characterized in that: Also includes at least one of the following: A first independent water tank and a first water pump, wherein an inlet of the first independent water tank is connected to the regulating valve, an outlet is connected to the inlet of the first heating device, another inlet is connected to the outlet of the first heating device, and another outlet is connected to the inlet of the third coil, and the first water pump is arranged at the outlet side or the inlet side of the first heating device; A second independent water tank and a second water pump, wherein an inlet of the second independent water tank is connected to the outlet of the fourth coil, an outlet is connected to the inlet of the second heating equipment, another inlet is connected to the outlet of the second heating equipment, and another outlet is connected to the inlet of the third coil, and the second water pump is arranged on the outlet side or the inlet side of the second heating equipment.

4. The sectional heating system according to claim 1, characterized in that: It also includes a main circulation water pump, which is arranged on the inlet side or the outlet side of the third coil.

5. The sectional heating system according to claim 1, characterized in that: Also includes at least one of the following: a first bypass and a first pressure differential bypass valve, wherein the first pressure differential bypass valve is installed on the first bypass, one end of the first bypass is connected to the inlet of the first heating device, and the other end is connected to the outlet of the first heating device; A second bypass and a second pressure differential bypass valve, wherein the second pressure differential bypass valve is installed on the second bypass, one end of the second bypass is connected to the inlet of the second heating device, and the other end is connected to the outlet of the second heating device.

6. The sectional heating system according to claim 1, characterized in that: It also includes an electric heating tank, which is arranged between the outlet of the fourth coil and the inlet of the second heating device.

7. The sectional heating system according to claim 1, characterized in that: It also includes a water separator, the inlet of the water separator is connected to an outlet of the regulating valve, and the outlet of the water separator is connected to the inlet of the first heating device.

8. The sectional heating system according to any one of claims 1 to 7, characterized in that: include: The first coil and the third coil are in a co-current heat exchange mode or a counter-current heat exchange mode; The second coil and the fourth coil are in a countercurrent heat exchange mode.

9. The sectional heating system according to any one of claims 1 to 7, characterized in that: Include one of the following: The first coil and the third coil are installed in a first heat exchanger, and the second coil and the fourth coil are installed in a second heat exchanger; The first coil, the third coil, the second coil and the fourth coil are all installed in the same heat exchanger.

10. The sectional heating system according to any one of claims 1 to 7, characterized in that: The first heating device includes a floor heating pipe, and the second heating device includes a radiator or a water heater.

11. The sectional heating system according to any one of claims 1 to 7, characterized in that: The heat pump system further includes a compressor and an outdoor unit. The refrigerant discharged from the exhaust port of the compressor passes through the second coil, the first coil and the outdoor unit in sequence and then flows back to the return air port of the compressor.

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