Atmospheric fluorine hot water system

Abstract

The utility model relates to refrigeration and heating equipment technical field discloses a kind of sky fluorine hot water systems.The reversing valve group of the system is connected with compressor, and reversing valve group has first conduction state;One end of outdoor heat exchange module is connected with reversing valve group;One end of indoor heat exchange module and water module is connected with reversing valve group, and the other end is connected with the other end of outdoor heat exchange module through throttling module.In first conduction state, refrigerant discharged from compressor is divided into two ways, one way passes through reversing valve group and enters indoor heat exchange module, and the other way passes through reversing valve group and enters at least one outdoor heat exchange module;Refrigerant discharged from outdoor heat exchange module enters throttling module;Refrigerant discharged from throttling module and refrigerant discharged from indoor heat exchange module are sequentially returned to compressor through water module and reversing valve group.The utility model solves the problem that sky fluorine hot water system in prior art will reduce indoor temperature when executing defrosting function.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration and heating equipment technology, and in particular to a Tianfu hot water system. Background Technology

[0002] The Tianfu hot water system is a composite HVAC system that combines a fluorine system (air conditioning cooling and heating system) with a water system (underfloor heating system). It achieves cooling, heating and domestic hot water functions through a single set of equipment. Its core feature is that one air conditioning outdoor unit can drive the central air conditioning indoor unit and domestic hot water for household use, realizing multiple uses in one unit.

[0003] In existing refrigerant-based hot water systems, once the outdoor unit reaches the defrosting condition (e.g., the outdoor heat exchanger temperature drops to a threshold temperature), the system enters defrosting mode. In defrosting mode, the air conditioning system switches from cooling to heating mode, which causes a decrease in indoor temperature and affects the user experience.

[0004] Therefore, how to mitigate the decrease in indoor temperature when defrosting the outdoor heat exchanger is a problem that the industry urgently needs to solve. Utility Model Content

[0005] This invention provides a flue-fluorinated hot water system to solve the defect in existing flue-fluorinated hot water systems that cause the indoor temperature to drop when performing the defrosting function, thus affecting the user experience.

[0006] This utility model provides a refrigerant-based hot water system, comprising: compressor; A reversing valve assembly is connected to the compressor and has a first conducting state; Multiple outdoor heat exchange modules, one end of any one of the outdoor heat exchange modules is connected to the reversing valve group; An indoor heat exchange module and a water supply module, one end of which is connected to the reversing valve group, and the other end of which is connected to the other end of the outdoor heat exchange module through a throttling module; In the first conducting state, the refrigerant discharged from the compressor is divided into two paths: one path passes through the reversing valve assembly and enters the indoor heat exchange module, and the other path passes through the reversing valve assembly and enters at least one of the outdoor heat exchange modules; the refrigerant discharged from the outdoor heat exchange module enters the throttling module; the refrigerant discharged from the throttling module and the refrigerant discharged from the indoor heat exchange module both flow back to the compressor sequentially through the water module and the reversing valve assembly.

[0007] According to the Tianfu hot water system provided by this utility model, the outdoor heat exchange module includes: An outdoor heat exchanger and an outdoor regulating valve are provided. One end of the outdoor heat exchanger is connected to the reversing valve group, and the other end is connected to the first end of the throttling module through the outdoor regulating valve.

[0008] According to the Tianfu hot water system provided by this utility model, the outdoor regulating valve is an electronic expansion valve.

[0009] According to the flue-cured hot water system provided by this utility model, the reversing valve assembly includes: The first four-way valve and the second four-way valve have their d-pipes connected to the compressor's exhaust port and their s-pipes connected to the compressor's intake port. The c-pipe of the first four-way valve is connected to one end of at least one of the outdoor heat exchange modules, and the c-pipe of the second four-way valve is connected to one end of the remaining outdoor heat exchange modules. The e-pipe of the first four-way valve is connected to one end of the indoor heat exchange module, and the e-pipe of the second four-way valve is connected to one end of the water supply module.

[0010] According to the Tianfu hot water system provided by this utility model, there are two outdoor heat exchange modules. One end of the outdoor heat exchange module is connected to the C-pipe of the first four-way valve, and the other end of the outdoor heat exchange module is connected to the C-pipe of the second four-way valve.

[0011] According to the Tianfu hot water system provided by this utility model, the indoor heat exchange module includes: An indoor heat exchanger and an indoor regulating valve are provided. One end of the indoor heat exchanger is connected to the e-pipe of the first four-way valve through the indoor regulating valve, and the other end is connected to the second end of the throttling module.

[0012] According to the Tianfu hot water system provided by this utility model, the indoor regulating valve is an electronic expansion valve.

[0013] According to the Tianfu hot water system provided by this utility model, the water-using module includes: First regulating valve and second regulating valve; A water storage tank has a refrigerant flow channel inside. One end of the refrigerant flow channel is connected to the e-pipe of the second four-way valve through the first regulating valve, and the other end of the refrigerant flow channel is connected to the second end of the throttling module through the second regulating valve.

[0014] The flue-cured hot water system provided by this utility model also includes: A gas-liquid separator is installed at the suction end of the compressor.

[0015] The flue-cured hot water system provided by this utility model also includes: An oil-water separator is located at the exhaust end of the compressor.

[0016] The refrigerant-based hot water system provided by this invention, by setting a reversing valve assembly with a first conducting state, can split the high-temperature, high-pressure refrigerant discharged from the compressor into two paths. One path passes through the reversing valve assembly to enter the indoor heat exchange module, providing heating to the room; the other path passes through the reversing valve assembly to enter at least one outdoor heat exchange module, enabling defrosting of the outdoor refrigerant module. This overcomes the defect of traditional refrigerant-based hot water systems where the indoor temperature drops when performing the defrosting function. Subsequently, the refrigerant discharged from the outdoor heat exchange module enters the throttling module for throttling and cooling. The refrigerant discharged from the throttling module and the refrigerant discharged from the indoor heat exchange module both flow back to the compressor sequentially through the water module and the reversing valve assembly. At this time, the water module acts as an evaporator to evaporate the refrigerant. This ensures that heat is extracted from the water module when defrosting the outdoor heat exchange module, avoiding heat extraction from the indoor heat exchange module, thus ensuring that the indoor heat exchange module continues to provide heating to the room. This improves the user experience and solves the defect of existing refrigerant-based hot water systems where the indoor temperature drops when performing the defrosting function, affecting the user experience. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the Tianfu hot water system provided by this utility model.

[0019] Figure label: 100. Compressor; 200. Reversing valve assembly; 210. First four-way valve; 220. Second four-way valve; 300. Outdoor heat exchange module; 310. Outdoor heat exchanger; 320. Outdoor regulating valve; 400. Indoor heat exchange module; 410. Indoor heat exchanger; 420. Indoor regulating valve; 500, Throttling module; 600. Water supply module; 610. First regulating valve; 620. Second regulating valve; 630. Water storage tank; 700, Gas-liquid separator; 800, Oil-water separator. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] In the description of this specification, it should be noted that, unless otherwise expressly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this specification. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0023] In the embodiments of this specification, "at least one" means one or more, and "more than one" means two or more. "And / or" describes the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone.

[0024] like Figure 1As shown, a specific embodiment of this utility model provides a flue-cured hot water system. This flue-cured hot water system includes a compressor 100, a reversing valve assembly 200, multiple outdoor heat exchange modules 300, indoor heat exchange modules 400, and a water-using module 600. The reversing valve assembly 200 is connected to the compressor 100 and has a first conducting state; one end of each outdoor heat exchange module 300 is connected to the reversing valve assembly 200; one end of each indoor heat exchange module 400 and water-using module 600 is connected to the reversing valve assembly 200, and the other end of each is connected to the other end of the outdoor heat exchange module 300 through a throttling module 500.

[0025] In the first conducting state, the refrigerant discharged from the compressor 100 is divided into two paths: one path passes through the reversing valve assembly 200 and enters the indoor heat exchange module 400, and the other path passes through the reversing valve assembly 200 and enters at least one outdoor heat exchange module 300; the refrigerant discharged from the outdoor heat exchange module 300 enters the throttling module 500; the refrigerant discharged from the throttling module 500 and the refrigerant discharged from the indoor heat exchange module 400 both pass through the water module 600 and the reversing valve assembly 200 in sequence and flow back to the compressor 100.

[0026] In this embodiment, by setting a reversing valve group 200 with a first conducting state, the high-temperature and high-pressure refrigerant discharged by the compressor 100 can be divided into two paths. One path enters the indoor heat exchange module 400 through the reversing valve group 200 to provide heating to the room, and the other path enters at least one outdoor heat exchange module 300 through the reversing valve group 200 to defrost the outdoor heat exchange module 300. This overcomes the defect of traditional refrigerant hot water systems that cause the indoor temperature to drop when performing the defrosting function. Next, the refrigerant discharged from the outdoor heat exchange module 300 enters the throttling module 500 for throttling and cooling. The refrigerant discharged from the throttling module 500 and the refrigerant discharged from the indoor heat exchange module 400 are both returned to the compressor 100 via the water module 600 and the reversing valve assembly 200. At this time, the water module 600 acts as an evaporator to evaporate the refrigerant. This design allows heat to be extracted from the water module 600 when defrosting the outdoor heat exchange module 300, avoiding heat extraction from the indoor heat exchange module 400. This ensures that the indoor heat exchange module 400 continues to supply heat to the room, improving the user experience and solving the defect in the existing Tianfu hot water system where the indoor temperature drops when the defrosting function is performed, affecting the user experience.

[0027] In other words, when the Tianfu hot water system in this embodiment performs the defrosting function, the reversing valve group 200 is in the first conducting state, which can solve the defect in the existing Tianfu hot water system that the indoor temperature will drop when the defrosting function is performed, affecting the user experience.

[0028] In some embodiments of this utility model, the throttling module 500 includes an electronic expansion valve, which facilitates automated control of the valve opening.

[0029] In some embodiments of this utility model, the outdoor heat exchange module 300 includes an outdoor heat exchanger 310 and an outdoor regulating valve 320; one end of the outdoor heat exchanger 310 is connected to the reversing valve group 200, and the other end is connected to the first end of the throttling module 500 through the outdoor regulating valve 320.

[0030] In this embodiment, the outdoor regulating valve 320 of each outdoor heat exchange module 300 can independently control the refrigerant flow of the outdoor heat exchanger 310, achieving on-demand defrosting and load matching. For example, through the independently designed outdoor regulating valve 320, the refrigerant flow can be increased only for the outdoor heat exchanger 310 with severe frost (improving defrosting efficiency), while maintaining a low flow for modules without frost, avoiding energy waste. The refrigerant distribution of each module can also be dynamically adjusted according to the outdoor temperature and the degree of frost, optimizing the overall system energy efficiency. Traditional systems defrost all outdoor unit heat exchangers uniformly, while this invention can achieve differentiated defrosting through the outdoor regulating valve 320, extending the life of the heat exchangers.

[0031] Optionally, the outdoor regulating valve 320 can be an electronic expansion valve, facilitating automated control.

[0032] In some embodiments of this utility model, the reversing valve assembly 200 includes a first four-way valve 210 and a second four-way valve 220; the d-pipe of the first four-way valve 210 and the d-pipe of the second four-way valve 220 are both connected to the exhaust port of the compressor 100, and the s-pipe of the first four-way valve 210 and the s-pipe of the second four-way valve 220 are both connected to the intake port of the compressor 100; the c-pipe of the first four-way valve 210 is connected to one end of at least one outdoor heat exchange module 300, and the c-pipe of the second four-way valve 220 is connected to one end of the remaining outdoor heat exchange modules 300; the e-pipe of the first four-way valve 210 is connected to one end of the indoor heat exchange module 400, and the e-pipe of the second four-way valve 220 is connected to one end of the water supply module 600.

[0033] In this embodiment, the reversing valve assembly 200 adopts a collaborative design of dual four-way valves (first four-way valve 210 plus second four-way valve 220). By precisely controlling the refrigerant flow direction, it solves the limitations of traditional single four-way valve systems during mode switching. The compressor 100 discharge port is simultaneously connected to the d-pipes of both four-way valves, allowing dynamic allocation of high-temperature refrigerant according to demand. For example, when heating is prioritized, more refrigerant can flow to the indoor side through the first four-way valve 210; when defrosting is prioritized, the refrigerant can be concentrated to the outdoor heat exchange module 300 through the second four-way valve 220. This avoids the waste of refrigerant in traditional systems where it is "fully open or fully closed," achieving on-demand allocation. The s-pipes of both four-way valves are connected back to the compressor 100 suction port, ensuring that the low-temperature refrigerant returning from the indoor heat exchange module 400, water module 600, and outdoor heat exchanger 310 can be uniformly recovered; ensuring a more stable system pressure balance and reducing compressor 100 load fluctuations. The first four-way valve 210 is dedicated to controlling the path switching between the indoor heat exchange module 400 and part of the outdoor heat exchange module 300; the second four-way valve 220 can independently control the refrigerant flow direction between the water module 600 and the remaining outdoor heat exchange module 300. During defrosting, the first four-way valve 210 can maintain continuous heating in the indoor heat exchange module 400, while the second four-way valve 220 directs the high-temperature refrigerant to the outdoor heat exchange module 300 that needs defrosting, and the two do not interfere with each other. Compared with the traditional solution, the single four-way valve system must switch modes as a whole during defrosting, resulting in interruption of indoor heating; while the dual four-way valve design of this utility model completely avoids this problem through physical isolation of the path. The C-pipe of the first four-way valve 210 connects to part of the outdoor unit, and the C-pipe of the second four-way valve 220 connects to another part of the outdoor unit, so that defrosting can be performed in groups. The dual four-way valves can share the discharge pressure of the compressor 100, especially under low-temperature defrosting conditions, to avoid excessive pressure on a single path. The dual four-way valve design achieves parallel operation of functions through path isolation and dynamic flow diversion, allowing heating, defrosting, and hot water functions to operate simultaneously; it maximizes energy efficiency by distributing refrigerant according to actual needs, reducing energy waste; and it can also adapt to complex scenarios with multiple outdoor units, with high fault tolerance.

[0034] In some embodiments of this utility model, there are two outdoor heat exchange modules 300, one end of which is connected to the c-pipe of the first four-way valve 210, and the other end of which is connected to the c-pipe of the second four-way valve 220.

[0035] In this embodiment, by connecting the two outdoor heat exchanger modules 310 to the c-pipes of the two four-way valves respectively, it is possible to defrost the two outdoor heat exchangers 310 in groups and ensure heating for the indoor environment.

[0036] For example, for ease of description, the two outdoor heat exchange modules 300 can be named the first outdoor heat exchange module and the second outdoor heat exchange module, respectively. The first outdoor heat exchange module 300 includes an upper condenser and a first outdoor regulating valve; the second outdoor heat exchange module includes a lower condenser and a second outdoor regulating valve. One end of the lower condenser is connected to the c-tube of the first four-way valve 210, and the other end of the lower condenser is connected to the first end of the throttling module 500 through the second outdoor regulating valve. One end of the upper condenser is connected to the c-tube of the second four-way valve 220, and the other end of the upper condenser is connected to the first end of the throttling module 500 through the first outdoor regulating valve.

[0037] When defrosting of the upper condenser is required, the refrigerant discharged from the compressor 100 is divided into two paths. One path passes through the first four-way valve 210 into the indoor heat exchange module 400 to provide indoor heating; the other path passes through the second four-way valve 220 into the upper condenser to defrost it. The refrigerant discharged from the upper condenser passes through the first outdoor regulating valve and the throttling component before entering the water module 600, while the refrigerant discharged from the indoor heat exchange module 400 also enters the water module 600. The refrigerant evaporates in the water module 600 and finally flows back to the compressor 100 through the second four-way valve 220.

[0038] When both the upper and lower condensers need to be defrosted simultaneously, the refrigerant discharged from the compressor 100 is divided into two paths. One path enters the lower condenser through the first four-way valve 210 to defrost it; the other path enters the upper condenser through the second four-way valve 220 to defrost it. The refrigerant flowing from the upper and lower condensers passes through their respective outdoor regulating valves 320 and then through the throttling module 500, where it is again divided into two paths. One path flows back to the compressor 100 through the indoor heat exchange module 400 and the first four-way valve 210; the other path flows back to the compressor 100 through the water module 600 and the second four-way valve 220. This defrosting process extracts heat from both the indoor heat exchanger 410 and the water module 600. Compared to the traditional defrosting method that only extracts heat from the indoor unit, this dual heat extraction method in this embodiment can alleviate the degree of indoor temperature drop.

[0039] In some embodiments of this utility model, the indoor heat exchange module 400 includes an indoor heat exchanger 410 and an indoor regulating valve 420. One end of the indoor heat exchanger 410 is connected to the e-pipe of the first four-way valve 210 through the indoor regulating valve 420, and the other end is connected to the second end of the throttling module 500.

[0040] In this embodiment, the refrigerant flow into the indoor heat exchanger 410 can be controlled in real time via the indoor regulating valve 420. The valve opening can be dynamically adjusted according to changes in room temperature, avoiding room temperature fluctuations caused by a fixed flow rate in traditional systems. If the system has multiple indoor units, each indoor regulating valve 420 can be controlled independently to meet the differentiated temperature requirements of different rooms. When the outdoor unit is defrosting, the indoor regulating valve 420 can maintain its minimum opening to ensure a continuous flow of refrigerant through the indoor heat exchanger 410 (maintaining slight heating), while prioritizing the allocation of most of the high-temperature refrigerant to the outdoor unit for defrosting, thus improving defrosting efficiency.

[0041] Optionally, the indoor regulating valve 420 is an electronic expansion valve, facilitating automated control.

[0042] In some embodiments of this utility model, the water-using module 600 includes a first regulating valve 610, a second regulating valve 620, and a water storage tank 630. The water storage tank 630 has a refrigerant flow channel. One end of the refrigerant flow channel is connected to the e-pipe of the second four-way valve 220 through the first regulating valve 610, and the other end of the refrigerant flow channel is connected to the second end of the throttling module 500 through the second regulating valve 620.

[0043] Optionally, the first regulating valve 610 can be a throttle valve or an electronic expansion valve.

[0044] Optionally, the second regulating valve 620 is a throttle valve or an electronic expansion valve.

[0045] In some embodiments of this utility model, the Tianfu hot water system further includes a gas-liquid separator 700; the gas-liquid separator 700 is disposed at the suction end of the compressor 100. Specifically, the S-tubes of the first four-way valve 210 and the second four-way valve 220 are both connected to the suction port of the compressor 100 through the gas-liquid separator 700. This can reduce the risk of liquid slugging in the compressor 100 and protect the compressor 100.

[0046] In some embodiments of this utility model, the Tianfu hot water system further includes an oil-water separator 800; the oil-water separator 800 is disposed at the discharge end of the compressor 100. Specifically, the discharge port of the compressor 100 is connected to the inlet of the oil-water separator 800, and the outlet of the oil-water separator 800 is connected to the d-tube of the first four-way valve 210 and the d-tube of the second four-way valve 220, respectively. This can maintain the purity of the refrigerant and the cleanliness of the heat exchanger, which helps to improve the system COP.

[0047] Optionally, the outlet of the oil-water separator 800 is connected to the oil port of the compressor 100 via a capillary tube.

[0048] For example, this embodiment provides a Tianfu hot water system. The Tianfu hot water system includes a compressor 100, a first four-way valve 210, a second four-way valve 220, two outdoor heat exchange modules 300, an indoor heat exchange module 400, a throttling module 500, and a water supply module 600.

[0049] For ease of description, the two outdoor heat exchange modules 300 are respectively named the first outdoor heat exchange module and the second outdoor heat exchange module; wherein, the first outdoor heat exchange module includes an upper condenser (i.e., the first outdoor heat exchanger) and a first outdoor regulating valve; the second outdoor heat exchange module includes a lower condenser (i.e., the second outdoor heat exchanger) and a second outdoor regulating valve. The indoor heat exchange module 400 includes an indoor heat exchanger 410 and an indoor regulating valve 420. The water supply module 600 includes a water storage tank 630, a first regulating valve 610, and a second regulating valve 620.

[0050] The d-pipes of both the first four-way valve 210 and the second four-way valve 220 are connected to the discharge port of the compressor 100. The s-pipes of both the first four-way valve 210 and the second four-way valve 220 are connected to the suction port of the compressor 100. The c-pipe of the first four-way valve 210 is connected to one end of the lower condenser, and the c-pipe of the second four-way valve 220 is connected to one end of the upper condenser. The e-pipe of the first four-way valve 210 is connected to one end of the indoor heat exchanger 410 through the indoor regulating valve 420, and the e-pipe of the second four-way valve 220 is connected to one end of the refrigerant flow channel of the water storage tank 630 through the first regulating valve 610. The other end of the lower condenser is connected to one end of the throttling module 500 through the second outdoor regulating valve, and the other end of the upper condenser is connected to one end of the throttling module 500 through the first outdoor regulating valve. The other end of the indoor heat exchanger 410 is connected to the other end of the throttling module 500, and the other end of the refrigerant flow channel is connected to the other end of the throttling module 500 through the second regulating valve 620.

[0051] In the simple cooling mode, the first regulating valve 610 and the second regulating valve 620 are closed. The refrigerant discharged from the compressor 100 is divided into two paths: one path flows to the lower condenser through the first four-way valve 210, and the other path flows to the upper condenser through the second four-way valve 220. The refrigerant flowing out from the upper and lower condensers passes through their respective outdoor regulating valves 320, and then passes through the throttling module 500, the indoor heat exchanger 410, the indoor regulating valve 420, and the first four-way valve 210 before returning to the compressor 100.

[0052] In the continuous supply mode of hot and cold air, both the first regulating valve 610 and the second regulating valve 620 are open. The refrigerant discharged from the compressor 100 is divided into two paths: one path enters the lower condenser through the first four-way valve 210, and the other path enters the water storage tank 630 through the second four-way valve 220 and the first regulating valve 610. The refrigerant discharged from the lower condenser enters the indoor and outdoor heat exchangers through the second outdoor regulating valve and the throttling module 500. The refrigerant discharged from the water storage tank 630 also enters the indoor heat exchanger 410 through the second regulating valve 620. The refrigerant discharged from the indoor heat exchanger 410 flows back to the compressor 100 through the indoor regulating valve 420 and the first four-way valve 210.

[0053] Optionally, when the water temperature in the water storage tank 630 reaches the preset temperature, the first regulating valve 610 and the second regulating valve 620 can be closed, at which point the system switches to a simple cooling mode.

[0054] In the simple hot water production mode, the refrigerant discharged from the compressor 100 enters the water storage tank 630 through the second four-way valve 220 and the first regulating valve 610. The refrigerant discharged from the water storage tank 630 flows to the throttling module 500 through the second regulating valve 620. The refrigerant flowing out of the throttling module 500 is divided into two paths: one path enters the upper condenser through the first outdoor regulating valve, and the other path enters the lower condenser through the second outdoor regulating valve. The refrigerant discharged from the upper condenser flows back to the compressor 100 through the second four-way valve 220, and the refrigerant discharged from the lower condenser flows back to the compressor 100 through the first four-way valve 210.

[0055] In the simple hot air mode, the first regulating valve 610 and the second regulating valve 620 are closed. The refrigerant discharged from the compressor 100 enters the indoor heat exchange module 400 through the first four-way valve 210, the refrigerant discharged from the indoor heat exchange module 400 enters the outdoor heat exchange module 300 through the throttling module 500, and the refrigerant discharged from the outdoor heat exchange module 300 flows back to the compressor 100 through the corresponding four-way valve.

[0056] In the hot air and hot water continuous supply mode, the first regulating valve 610 and the second regulating valve 620 are opened. The refrigerant discharged from the compressor 100 is divided into two paths. One path passes through the first four-way valve 210 and the indoor regulating valve 420 to enter the indoor heat exchanger 410, and the other path passes through the second four-way valve 220 and the first regulating valve 610 to enter the water storage tank 630. The refrigerant discharged from the water storage tank 630 passes through the second regulating valve 620 to enter the throttling module 500. The refrigerant discharged from the indoor heat exchanger 410 also enters the throttling module 500. The refrigerant discharged from the throttling module 500 flows back to the compressor 100 through the outdoor heat exchange module 300 and the corresponding four-way valve.

[0057] Optionally, when the water temperature in the water storage tank 630 reaches the preset temperature, the first regulating valve 610 and the second regulating valve 620 can be closed, and the system can be switched to a simple hot air mode.

[0058] Optionally, in low-load cooling mode, one outdoor regulating valve 320 can be closed to allow one condenser to operate. Compared to two condensers working together, having only one condenser operating can reduce the system's energy consumption.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A natural gas-fired hot water system, characterized in that, include: Compressor (100); A reversing valve assembly (200) is connected to the compressor (100) and has a first conducting state; Multiple outdoor heat exchange modules (300), one end of any one of the outdoor heat exchange modules (300) is connected to the reversing valve group (200); An indoor heat exchange module (400) and a water supply module (600) are provided. One end of each of the indoor heat exchange module (400) and the water supply module (600) is connected to the reversing valve group (200), and the other end of each is connected to the other end of the outdoor heat exchange module (300) through a throttling module (500). In the first conducting state, the refrigerant discharged from the compressor (100) is divided into two paths: one path passes through the reversing valve group (200) and enters the indoor heat exchange module (400), and the other path passes through the reversing valve group (200) and enters at least one of the outdoor heat exchange modules (300); the refrigerant discharged from the outdoor heat exchange module (300) enters the throttling module (500); the refrigerant discharged from the throttling module (500) and the refrigerant discharged from the indoor heat exchange module (400) both pass through the water module (600) and the reversing valve group (200) in sequence and flow back to the compressor (100).

2. The flue-cured hot water system according to claim 1, characterized in that, The outdoor heat exchange module (300) includes: An outdoor heat exchanger (310) and an outdoor regulating valve (320) are provided. One end of the outdoor heat exchanger (310) is connected to the reversing valve group (200), and the other end is connected to the first end of the throttling module (500) through the outdoor regulating valve (320).

3. The flue-cured hot water system according to claim 2, characterized in that, The outdoor regulating valve (320) is an electronic expansion valve.

4. The flue-cured hot water system according to claim 1, characterized in that, The reversing valve assembly (200) includes: The first four-way valve (210) and the second four-way valve (220) are connected to the exhaust port of the compressor (100) via both the d-pipe of the first four-way valve (210) and the s-pipe of the second four-way valve (220). The s-pipe of the first four-way valve (210) and the s-pipe of the second four-way valve (220) are connected to the intake port of the compressor (100). The c-pipe of the first four-way valve (210) is connected to one end of at least one of the outdoor heat exchange modules (300), and the c-pipe of the second four-way valve (220) is connected to one end of the remaining outdoor heat exchange modules (300). The e-pipe of the first four-way valve (210) is connected to one end of the indoor heat exchange module (400), and the e-pipe of the second four-way valve (220) is connected to one end of the water supply module (600).

5. The flue-cured hot water system according to claim 4, characterized in that, There are two outdoor heat exchange modules (300), one end of which is connected to the c-pipe of the first four-way valve (210), and the other end of which is connected to the c-pipe of the second four-way valve (220).

6. The flue-cured hot water system according to claim 4, characterized in that, The indoor heat exchange module (400) includes: The indoor heat exchanger (410) and the indoor regulating valve (420) are provided. One end of the indoor heat exchanger (410) is connected to the e-pipe of the first four-way valve (210) through the indoor regulating valve (420), and the other end is connected to the second end of the throttling module (500).

7. The flue-cured hot water system according to claim 6, characterized in that, The indoor regulating valve (420) is an electronic expansion valve.

8. The flue-cured hot water system according to claim 6, characterized in that, The water-using module (600) includes: First regulating valve (610) and second regulating valve (620); A water storage tank (630) has a refrigerant flow channel inside. One end of the refrigerant flow channel is connected to the e-pipe of the second four-way valve (220) through the first regulating valve (610), and the other end of the refrigerant flow channel is connected to the second end of the throttling module (500) through the second regulating valve (620).

9. The natural gas hot water system according to any one of claims 1 to 8, characterized in that, Also includes: A gas-liquid separator (700) is disposed at the suction end of the compressor (100).

10. The flue-cured hot water system according to claim 9, characterized in that, Also includes: An oil-water separator (800) is located at the exhaust end of the compressor (100).

Images