Gas water heating device, heating system and heating system control method

Abstract

The invention relates to the technical field of water heating, and particularly discloses a gas water heating device, a heating system and a heating system control method. A burner; a heating water outlet and a heating water return port; the first channel is arranged between a water outlet of the first heat exchanger and a heating water outlet, and the second channel is arranged between a water inlet of the first heat exchanger and a heating water return port; the first connector and the second connector are communicated with the first channel or the second channel, the first connector is located on the upstream of the second connector, at least part of water flowing into the first channel or the second channel is led out to an external heat source through the first connector, and water heated by the external heat source flows into the first channel or the second channel through the second connector; the pump is arranged on the first channel or the second channel; the first flow adjusting device is used for adjusting the flow of water flowing to the first connector. According to the scheme, indoor temperature control can be achieved, and the heating requirement of a user can be met comfortably in an energy-saving mode.

Description

TECHNICAL FIELD

[0001] The present specification relates to the technical field of water heating, and in particular to a gas water heating device, a heating system, and a heating system control method. BACKGROUND

[0002] In existing central heating areas, the heating system has some limitations and problems. First, the development time of heating is limited, and users often hope to use heating services as early as possible. Second, the heating temperature cannot be effectively controlled. When the temperature of central heating is low, the heat cannot be supplemented in time, and the user's heating experience is poor; while when the temperature of central heating reaches a certain degree, the excess heat cannot be used to heat domestic water, resulting in insufficient energy utilization and lack of energy-saving and environment-friendly characteristics.

[0003] In addition, if the central heating system is directly connected with the wall-mounted stove device, a dirty blockage problem may also occur, which will have a negative impact on the service life of the wall-mounted stove.

[0004] At present, there is no effective solution to the above problems. SUMMARY

[0005] The embodiments of the present specification provide a gas water heating device, a heating system, and a heating system control method to solve the problem that users in central heating areas cannot be pre-heated and indoor temperature control cannot be realized in the prior art.

[0006] The embodiments of the present specification provide a gas water heating device, comprising:

[0007] a first heat exchanger;

[0008] a burner configured to heat the first heat exchanger;

[0009] a heating water outlet configured to input water into an indoor heating system, and a heating water return configured to receive water returned from the indoor heating system;

[0010] a first channel arranged between an outlet of the first heat exchanger and the heating water outlet, and a second channel arranged between an inlet of the first heat exchanger and the heating water return;

[0011] a first interface and a second interface in communication with the first channel or the second channel, the first interface being upstream of the second interface, the first interface being configured to guide at least part of the water flowing into the first channel or the second channel to an external heat source, and the second interface being configured to guide the water heated by the external heat source to flow into the first channel or the second channel;

[0012] a pump arranged on the first passage or the second passage, the pump being configured to drive water flowing from the heating water outlet into the second passage to flow through the first heat exchanger and then from the first passage to the heating water inlet;

[0013] a first flow regulating device configured to regulate the flow of water to the first interface.

[0014] In one embodiment, the gas water heating device further comprises a first port and a second port, the first port being in communication with the first interface via a pipe, and the second port being in communication with the second interface via a pipe.

[0015] In one embodiment, the gas water heating device comprises a housing, the heating water outlet, the heating water inlet, the first port and the second port being arranged outside the housing.

[0016] In one embodiment, the pump is arranged upstream of the first interface or downstream of the second interface.

[0017] In one embodiment, the gas water heating device further comprises a second heat exchanger, the second heat exchanger having a first flow passage and a second flow passage, the first flow passage having an inlet in communication with the first passage so that water in the first passage can flow into the inlet of the first flow passage, and the first flow passage having an outlet in communication with the second passage so that water flowing out of the outlet of the first flow passage can flow into the second passage, the second flow passage being configured to circulate domestic water, and water flowing through the first flow passage and water flowing through the second flow passage being configured to exchange heat.

[0018] In one embodiment, the gas water heating device further comprises a second flow regulating device, the second flow regulating device being configured to divide water flowing into the first passage into the heating water outlet and / or the inlet of the first flow passage.

[0019] In one embodiment, the second flow regulating device is arranged on the first passage, the first interface and the second interface are arranged on the first passage, and the second flow regulating device is arranged downstream of the second interface.

[0020] In one embodiment, the outlet of the first flow passage and the second passage have a communication portion arranged on the second passage;

[0021] the first interface and the second interface are arranged on the second passage and are arranged downstream of the communication portion, and the pump is arranged at the communication portion or the pump is arranged between the communication portion and the first interface or between the second interface and the water inlet of the first heat exchanger.

[0022] In one embodiment, the gas water heating device further comprises a first temperature sensor and a second temperature sensor; the first temperature sensor is located upstream of the first interface, and the second temperature sensor is located downstream of the second interface.

[0023] In one embodiment, the first flow regulating device is disposed at a communication part of the first interface and the first channel or the second channel, or the first flow regulating device is disposed at a communication part of the second interface and the first channel or the second channel, and the first flow regulating device is a three-way flow regulating valve.

[0024] In one embodiment, the first flow regulating device comprises a first valve and a second valve, the first valve is disposed between the first interface and the second interface, and the second valve is disposed between the first interface and an external heat source or between the second interface and an external heat source.

[0025] In one embodiment, the first flow regulating device comprises a third valve, the third valve is disposed between the first interface and an external heat source or between the second interface and an external heat source.

[0026] The embodiments of the present specification also provide a heating system comprising the gas water heating device described in any of the above embodiments;

[0027] The heating system further comprises:

[0028] An indoor heating system, an inlet of the indoor heating system is connected to the heating water outlet, and an outlet of the indoor heating system is connected to the heating water return inlet.

[0029] An external heat source, the external heat source has a first interface connected to the first interface, and a second interface connected to the second interface, water flowing out of the first interface can flow into the first interface, be heated by the external heat source, and then flow to the second interface through the second interface.

[0030] In one embodiment, the external heat source comprises a third heat exchanger, the third heat exchanger comprises a first water flow path and a second water flow path, the first interface and the second interface are connected to the first water flow path, the second water flow path is used to connect to municipal heating, the second water flow path is used to flow municipal heating water, and water flowing through the first water flow path and water flowing through the second water flow path exchange heat.

[0031] In one embodiment, the third heat exchanger is disposed at a predetermined position in the room.

[0032] The embodiments of the present specification also provide a heating system control method, which is based on the heating system in any of the above embodiments, and the heating system control method comprises:

[0033] obtaining the working state of the external heat source;

[0034] controlling the first flow adjusting device to adjust the water flow from the first interface into the external heat source according to the working state of the external heat source.

[0035] In one embodiment, controlling the first flow adjusting device to adjust the water flow from the first interface into the external heat source according to the working state of the external heat source comprises:

[0036] if the external heat source is in the on state, controlling the first flow adjusting device so that at least part of the water flow flows from the first interface into the external heat source;

[0037] if the external heat source is in the off state, controlling the first flow adjusting device so that no water flow flows from the first interface into the external heat source.

[0038] In one embodiment, the gas water heater comprises a first temperature sensor and a second temperature sensor; the first temperature sensor is located upstream of the first interface, and the second temperature sensor is located downstream of the second interface;

[0039] The control method further comprises:

[0040] obtaining the first temperature detected by the first temperature sensor and the second temperature detected by the second temperature sensor;

[0041] in the case that the external heat source is in the on state, controlling the first flow adjusting device to adjust the water flow from the first interface into the external heat source according to the first temperature and the second temperature.

[0042] In one embodiment, controlling the first flow adjusting device to adjust the water flow from the first interface into the external heat source according to the first temperature and the second temperature comprises:

[0043] in the case that the first temperature is less than the second temperature, controlling the first flow adjusting device so that the water flow from the first interface into the external heat source is increased;

[0044] in the case that the first temperature is not less than the second temperature, controlling the first flow adjusting device so that the water flow from the first interface into the external heat source is decreased.

[0045] In one embodiment, the heating system control method further comprises:

[0046] In the case that the external heat source is in operation, if the first temperature is less than the second temperature, it is determined that the external heat source is in an available state.

[0047] In the case that the external heat source is in operation, if the first temperature is not less than the second temperature, it is determined that the external heat source is in an unavailable state.

[0048] In an embodiment, the control method further comprises:

[0049] obtaining a heating water outlet set temperature of the gas water heating device and a second temperature detected by the second temperature sensor;

[0050] controlling the burner to determine whether to operate according to the heating water outlet set temperature and the second temperature.

[0051] In an embodiment, controlling the burner to determine whether to operate according to the heating water outlet set temperature and the second temperature comprises:

[0052] in the case that the second temperature is lower than the heating water outlet set temperature, controlling the burner to heat the first heat exchanger;

[0053] in the case that the second temperature is not lower than the heating water outlet set temperature, controlling the burner to stop heating.

[0054] In an embodiment, the heating system control method further comprises:

[0055] obtaining a heating water outlet set temperature of the gas water heating device and a second temperature detected by the second temperature sensor;

[0056] in the case that the second temperature is greater than the heating water outlet set temperature and a difference between the second temperature and the heating water outlet set temperature is greater than a preset temperature difference, controlling the first flow adjusting device to reduce the water flow from the first interface to the external heat source.

[0057] The embodiments of the present specification also provide a computer device, comprising a processor and a memory for storing processor-executable instructions, wherein the processor executes the instructions to implement the steps of the heating system control method in any of the above embodiments.

[0058] The embodiments of the present specification also provide a computer-readable storage medium having computer instructions stored thereon, wherein the instructions are executed to implement the steps of the heating system control method in any of the above embodiments.

[0059] The technical solutions of the present specification have the following remarkable beneficial effects:

[0060] The gas water heating device in the embodiment of the present specification can supply heat to the indoor heating system by flowing the water in the first heat exchanger into the indoor heating system through the first channel between the water outlet of the first heat exchanger and the heating water outlet, and then flowing the water backflowing from the indoor heating system into the first heat exchanger through the second channel between the water inlet of the first heat exchanger and the heating water inlet, so that the heating in the northern central heating area can be started in advance or extended according to the user's demand; further, by setting the first interface and the second interface in communication with the first channel or the second channel, at least part of the water flowing into the first channel or the second channel can be led out to the external heat source for heating through the first interface, and then the water heated by the external heat source is flowed into the first channel or the second channel through the second interface, by setting the first flow regulating device, the water flow to the first interface can be regulated, that is, the water flow from the first channel or the second channel to the external heat source through the first interface and then back to the first channel or the second channel through the second interface is regulated, so that the water flow for heat exchange with the external heat source can be regulated to regulate the water temperature in the first channel or the second channel, and thus the water temperature flowing into the indoor heating system in communication with the first channel and the second channel can be regulated, so that the indoor temperature control can be realized, and the user's heating demand can be met in an energy-saving and comfortable manner.

[0061] Certain embodiments of the application are disclosed in the specification and illustrated by the accompanying drawings and claims. It is to be understood that the foregoing description is not intended to limit the scope of the application. Features described in one embodiment can be used in other embodiments, in combination with other features, or in place of other features. The description and drawings are illustrative of the principles of the application and are not to be construed as limiting the scope of the application.

[0062] It should be emphasized that the term "comprises / comprising" when used in this specification is taken to mean the presence of stated features, integers, steps or components but not the exclusion of one or more other features, integers, steps, components or groups thereof. BRIEF DESCRIPTION OF DRAWINGS

[0063] The drawings described herein are for illustrative purposes only and are not intended to limit the scope of the present disclosure in any way. In addition, the shapes and proportions of the components in the drawings are only illustrative and are used to help understand the present application, and are not specifically limited to the shapes and proportions of the components. Those skilled in the art can select various possible shapes and proportions to implement the present application according to specific circumstances under the guidance of the present application. In the drawings:

[0064] Figure 1 The structure schematic diagram of the gas water heating device in the embodiment of the present specification is shown;

[0065] Figure 2A structural schematic diagram of a gas water heater in an embodiment of the present specification is shown.

[0066] Figure 3 A structural schematic diagram of a gas water heater in an embodiment of the present specification is shown.

[0067] Figure 4 A structural schematic diagram of a gas water heater in an embodiment of the present specification is shown.

[0068] Figure 5 A structural schematic diagram of a gas water heater in an embodiment of the present specification is shown.

[0069] Figure 6 A structural schematic diagram of a gas water heater in an embodiment of the present specification is shown.

[0070] Figure 7 A structural schematic diagram of a gas water heater in an embodiment of the present specification is shown.

[0071] Figure 8 A structural schematic diagram of a gas water heater in an embodiment of the present specification is shown.

[0072] Figure 9 A structural schematic diagram of a gas water heater in an embodiment of the present specification is shown.

[0073] Figure 10 A structural schematic diagram of a heating system in an embodiment of the present specification is shown.

[0074] Figure 11 A structural schematic diagram of a heating system in an embodiment of the present specification is shown.

[0075] Figure 12 A flow chart of a heating system control method in an embodiment of the present specification is shown.

[0076] Reference numerals of the above drawings:

[0077] 1. heating system; 2. municipal heating;

[0078] 10. gas water heater; 100. shell; 101. first heat exchanger; 102. burner; 103. second heat exchanger; 104. heating water outlet; 105. heating water return; 106. first passage; 107. second passage; 108. pump; 109. first flow regulating device; 190. three-way flow regulating valve; 191. first valve; 192. second valve; 193. third valve; 111. first interface; 112. second interface; 113. first port; 114. second port; 115. second flow regulating device; 116. first communication part; 117. second communication part; 118. third communication part; 131. first flow channel; 132. second flow channel;

[0079] 20. A heating system for a room;

[0080] 30. An external heat source; 301. A first connection port; 302. A second connection port; 303. A third heat exchanger; 331. A first water flow path; 332. A second water flow path;

[0081] 40. A domestic water device. DETAILED DESCRIPTION

[0082] The principles and spirit of the present specification will be described below with reference to several exemplary embodiments. It should be understood that these embodiments are given only for the purpose of better understanding and implementing the present specification, and do not limit the scope of the present specification in any way. On the contrary, these embodiments are provided to make the present disclosure more thorough and complete, and to fully convey the scope of the present disclosure to those skilled in the art.

[0083] Those skilled in the art know that the embodiments of the present specification can be implemented as a system, device, apparatus, method or computer program product. Therefore, the present disclosure can be embodied as a complete hardware, complete software (including firmware, resident software, microcode, etc.), or a combination of hardware and software.

[0084] The details of the present application can be more clearly understood with reference to the drawings and the specific embodiments described in the present application. However, the specific embodiments of the present application described herein are for the purpose of explaining the present application only, and should not be understood in any way as limiting the present application. Based on the teachings of the present application, those skilled in the art can conceive any possible modification based on the present application, which should be considered as falling within the scope of the present application. It should be noted that when an element is referred to as "provided on" another element, it can be directly on the other element or there can be a middle element. When an element is referred to as "connected" to another element, it can be directly connected to the other element or there can be a middle element. The terms "mount", "connect", "connect" should be interpreted broadly, for example, it can be a mechanical connection or an electrical connection, it can be a connection between two elements, it can be directly connected or indirectly connected through a medium. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for the purpose of illustration only, and do not indicate the only embodiment.

[0085] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this specification belongs. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the specification. As used in the description herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0086] The embodiments of the present specification provide a gas water heater. Figures 1 to 10 A structural schematic diagram of the gas water heater 10 in the embodiments of the present specification is shown. As shown in the figure, Figures 1 to 10 The gas water heater 10 can include a first heat exchanger 101, a burner 102, a heating water outlet 104 and a heating water return inlet 105, a first passage 106 and a second passage 107, a first interface 111 and a second interface 112, a pump 108, and a first flow regulating device 109.

[0087] The burner 102 is used for gas combustion. In an embodiment, the burner 102 can be oppositely arranged with the first heat exchanger 101 and can supply heat energy to the first heat exchanger 101. The burner 102 can be in a combustion state and a closed state, and in the combustion state, it is used for heating the first heat exchanger 101. The first heat exchanger 101 heats the water flowing through its interior under the supply of heat energy from the burner 102, so as to obtain hot water meeting the demand. As shown in the figure, Figures 1 to 8 The first heat exchanger 101 can be located above the burner 102, and the high-temperature flue gas formed by the combustion of the burner 102 flows through the first heat exchanger 101. The entire burner 102 extends generally in a horizontal direction, and the first heat exchanger 101 can also extend generally in the same horizontal direction corresponding to the burner 102.

[0088] The heating water outlet 104 is in communication with the water outlet of the first heat exchanger 101 and is used for inputting water into the indoor heating system 20. The heating water return inlet 105 is in communication with the water inlet of the first heat exchanger 101 and is used for receiving the water flowing back from the indoor heating system 20.

[0089] The first passage 106 is arranged between the water outlet of the first heat exchanger 101 and the heating water outlet 104 and can pass the water flowing out of the water outlet of the first heat exchanger 101 to the heating water outlet 104. The second passage 107 is arranged between the water inlet of the first heat exchanger 101 and the heating water return inlet 105 and can pass the water flowing out of the indoor heating system 20 to the water inlet of the first heat exchanger 101 through the heating water return inlet 105.

[0090] In an embodiment, as shown in the figure, Figures 1 to 4 The first interface 111 and the second interface 112 can be in communication with the first passage 106. In an embodiment, the first interface 111 and the second interface 112 can be arranged on the first passage 106.Figure 1 、 Figure 3 and Figure 4 In the embodiment shown, the first interface 111 and the second interface 112 can be provided on the first channel 106. Figure 2 In the embodiment shown, the first interface 111 and the second interface 112 can be provided between the first channel 106 and the external heat source 30, that is, there is a first connecting portion 116 between the first interface 111 and the first channel 106, and there is a second connecting portion 117 between the second interface 112 and the first channel 106. Figures 1 to 4 As shown, the first interface 111 can be located upstream of the second interface 112. The first interface 111 can be used to guide at least part of the water flowing into the first channel 106 to the external heat source 30. The second interface 112 can be used to flow water heated by the external heat source 30 into the first channel 106. Figure 1 In the embodiment shown, water flowing out of the outlet of the first heat exchanger 101 flows into the first channel 106, flows into the external heat source 30 through the first interface 111 for heating, and the heated water flows back to the first channel 106 through the second interface 112, and then flows into the indoor heating system 20 through the heating water outlet 104. After the water in the indoor heating system 20 flows back, it flows back to the second channel 107 through the heating water return port 105, and then flows back to the water inlet of the first heat exchanger 101 through the second channel 107.

[0091] In another embodiment, Figures 5 to 10 As shown, the first interface 111 and the second interface 112 can be connected to the second channel 107. The first interface 111 is located upstream of the second interface 112. The first interface 111 is used to guide at least part of the water flowing into the second channel 107 to the external heat source 30. The second interface 112 is used to flow the water heated by the external heat source 30 into the second channel 107. Figures 5 to 10 In the embodiment shown, the water flowing out of the outlet of the first heat exchanger 101 flows into the first channel 106, and then flows into the indoor heating system 20 through the heating water outlet 104. The water in the indoor heating system 20 flows back to the second channel 107 through the heating water return port 105. The water in the second channel 107 flows into the external heat source 30 through the first interface 111 for heating. The heated water then flows back to the second channel 107 through the second interface 112 and then flows back to the water inlet of the first heat exchanger 101. Figures 5 to 10 In the illustrated embodiment, only the first interface 111 and the second interface 112 are provided on the second channel 107. It will be appreciated that in some embodiments of this specification, the first interface 111 and the second interface 112 may also be provided between the second channel 107 and the external heat source 30. That is, a first connecting portion 116 exists between the first interface 111 and the second channel 107, and a second connecting portion 117 exists between the second interface 112 and the second channel 107.

[0092] In the embodiment, the heating of the water flowing into the external heat source 30 by the external heat source 30 can refer to the heat exchange between the external heat source 30 and the water flowing into the external heat source 30. In one embodiment, the external heat source 30 supplies heat to the water flowing into the external heat source 30, so that the water flowing out of the external heat source 30 has a higher temperature than the water flowing into the external heat source 30. In another embodiment, the external heat source 30 absorbs heat from the water flowing into the external heat source 30, so that the water flowing out of the external heat source 30 has a lower temperature than the water flowing into the external heat source 30.

[0093] In the embodiment, the external heat source 30 can be a gas water heater, an electric water heater, or municipal heating, etc.

[0094] The pump 108 can be arranged in the first channel 106 or the second channel 107. The pump 108 can be used to drive the water flowing into the second channel 107 from the heating water return port 105 to flow through the first heat exchanger 101 and then flow from the first channel 106 to the heating water outlet port 104. For example, as shown in FIG. 1, the pump 108 can be arranged in the second channel 107. Figures 1 to 10

[0095] The first flow regulating device 109 can be used to regulate the water flow to the first interface 111. In some embodiments of the present specification, the first flow regulating device 109 can be arranged at the communication part between the first interface 111 and the first channel 106 or the second channel 107, at the communication part between the second interface 112 and the first channel 106 or the second channel 107, on the pipeline between the first interface 111 and the external heat source 30, or on the pipeline between the second interface 112 and the external heat source 30.

[0096] The first flow regulating device 109 can be used to regulate the water flow from the first channel 106 or the second channel 107 to the external heat source 30 via the first interface 111 and then back to the first channel 106 or the second channel 107 via the second interface 112. That is, the first flow regulating device 109 can regulate the flow of water in the first channel 106 or the second channel 107 into the external heat source 30 for heating. By regulating the water flow to the first interface 111 through the first flow regulating device 109 to regulate the water temperature in the first channel 106 or the second channel 107, the water temperature flowing into the indoor heating system 20 connected to the first channel 106 and the second channel 107 can be regulated.

[0097] ​In the above embodiment, the water in the first heat exchanger 101 flows into the indoor heating system 20 through the first channel 106 between the water outlet of the first heat exchanger 101 and the heating water outlet, and then the water flowing back from the indoor heating system 20 flows into the first heat exchanger 101 through the second channel 107 between the water inlet of the first heat exchanger 101 and the heating water inlet, so that heat can be supplied to the indoor heating system 20, thereby enabling early heating or extended heating in the northern central heating area according to user needs; further, by providing the first interface 111 and the second interface 112 in communication with the first channel 106 or the second channel 107, at least part of the water flowing into the first channel 106 or the second channel 107 can be led out to the external heat source 30 for heating through the first interface 111, and then the water heated by the external heat source 30 flows into the first channel 106 or the second channel 107 through the second interface 112, by providing the first flow regulating device 109, the water flow to the first interface 111 can be regulated, that is, the water flow from the first channel 106 or the second channel 107 to the external heat source 30 through the first interface 111 and then back to the first channel 106 or the second channel 107 through the second interface 112 can be regulated, so that the water flow for heat exchange with the external heat source 30 can be regulated to regulate the water temperature in the first channel 106 or the second channel 107, and thus the water temperature flowing into the indoor heating system 20 in communication with the first channel 106 and the second channel 107 can be regulated, thereby enabling indoor temperature control and meeting the user's heating needs in an energy-saving and comfortable manner.

[0098] Please continue to refer to Figures 1 to 10 In some embodiments of the present specification, the gas water heating device 10 can further include a first port 113 and a second port 114. The first port 113 and the first interface 111 are in communication through a pipeline. The second port 114 and the second interface 112 are in communication through a pipeline. The water inlet of the external heat source 30 is connected to the first port 113 to communicate with the first interface 111 through the pipeline between the first port 113 and the first interface 111. The water outlet of the external heat source 30 is connected to the second port 114 to communicate with the second interface 112 through the pipeline between the second port 114 and the second interface 112.

[0099] In one embodiment, the first flow regulating device 109 can be provided on the pipeline between the first interface 111 and the first port 113. In another embodiment, the first flow regulating device 109 can be provided on the pipeline between the second interface 112 and the second port 114. In yet another embodiment, the first flow regulating device 109 can be provided on the communication part between the first interface 111 or the second interface 112 and the first channel 106 or the second channel 107.

[0100] As Figures 1 to 10As shown, in some embodiments of the present specification, the gas water heater 10 may include a housing 100 .

[0101] In this embodiment, the burner 102 , the first heat exchanger 101 , the first interface 111 , the second interface 112 , the first channel 106 , the second channel 107 , the pump 108 and the first flow regulating device 109 may be disposed in the housing 100 .

[0102] In this embodiment, the heating water outlet 104, the heating water return port 105, the first port 113, and the second port 114 can be located outside the housing 100. By arranging the heating water outlet 104, the heating water return port 105, the first port 113, and the second port 114 outside the housing 100, it is possible to facilitate the connection between the heating water outlet 104, the heating water return port 105 and the indoor heating system 20, as well as the connection between the first port 113, the second port 114 and the external heat source 30, thereby facilitating disassembly and installation.

[0103] like Figures 1 to 10 As shown, in some embodiments of the present specification, the pump 108 can be arranged upstream of the first interface 111 or downstream of the second interface 112. In this embodiment, the pump 108 can not only be used to drive the water flowing from the heating water return port 105 into the second channel 107 to flow through the first heat exchanger 101 and then flow from the first channel 106 to the heating water outlet 104, but can also be used to drive the water in the first channel 106 or the second channel 107 to flow from the first interface 111 into the external heat source 30 and then flow back to the first channel 106 or the second channel 107 from the second interface 112.

[0104] like Figures 1 to 10 As shown, in some embodiments of the present specification, the gas water heater 10 may further include a first temperature sensor and a second temperature sensor. The first temperature sensor is located upstream of the first interface 111. The second temperature sensor is located downstream of the second interface 112. The first temperature sensor can be used to detect the temperature of the water flowing into the first interface 111. The second temperature sensor can be used to detect the temperature of the water flowing out of the second interface 112. By providing the first temperature sensor and the second temperature sensor, it is convenient to determine the temperature change of the water flowing from the first interface 111 into the external heat source 30 through the first channel 106 or the second channel 107 after it flows out from the second interface 112, so that the first flow regulating device 109 can be controlled to adjust the flow rate flowing into the external heat source 30 according to the temperature change, thereby controlling the water temperature flowing into the indoor heating equipment.

[0105] In some embodiments of this specification, the first flow regulating device 109 may be provided at the connecting portion between the first interface 111 and the first channel 106. Figure 3As shown, in the case where the first interface 111 is arranged on the first channel 106, the first interface 111 is the communication part of the first channel 106, i.e., the first interface 111, and the first flow regulating device 109 can be arranged at the first interface 111. It can be understood that, in the case where the first interface 111 is arranged between the first channel 106 and the external heat source 30, there is a first communication part 116 between the first interface 111 and the first channel 106, and the first flow regulating device 109 can be arranged at the first communication part 116.

[0106] In this embodiment, the first flow regulating device 109 is a three-way flow regulating valve 190. The three-way flow regulating valve 190 can regulate the flow of water in the first channel 106 from the first interface 111 into the external heat source 30, and the regulation can include gradually increasing or decreasing, or can include opening and closing.

[0107] In some embodiments of the present specification, the first flow regulating device 109 is arranged at the communication part of the second interface 112 and the first channel 106. As shown in FIG. 1, in the case where the second interface 112 is arranged on the first channel 106, the second interface 112 is the communication part of the first channel 106, i.e., the second interface 112, and the first flow regulating device 109 can be arranged at the second interface 112. It can be understood that, in the case where the second interface 112 is arranged between the first channel 106 and the external heat source 30, there is a second communication part 117 between the second interface 112 and the first channel 106, and the first flow regulating device 109 can be arranged at the second communication part 117. Figure 4

[0108] In this embodiment, the first flow regulating device 109 is a three-way flow regulating valve 190. The three-way flow regulating valve 190 can regulate the flow of water in the first channel 106 from the first interface 111 into the external heat source 30, and the regulation can include gradually increasing or decreasing, or can include opening and closing.

[0109] In some embodiments of the present specification, the first flow regulating device 109 can be arranged at the communication part of the first interface 111 and the second channel 107. As shown in FIG. 1, in the case where the first interface 111 is arranged on the second channel 107, the first interface 111 is the communication part of the second channel 107, i.e., the first interface 111, and the first flow regulating device 109 can be arranged at the first interface 111. It can be understood that, in the case where the first interface 111 is arranged between the second channel 107 and the external heat source 30, there is a first communication part 116 between the first interface 111 and the second channel 107, and the first flow regulating device 109 can be arranged at the first communication part 116. Figure 6

[0110] ​​In the embodiment, the first flow regulating device 109 can be a three-way flow regulating valve 190. The three-way flow regulating valve 190 can regulate the flow of water in the second channel 107 from the first interface 111 to the external heat source 30, and the regulation can include gradually increasing or decreasing, or only opening and closing.

[0111] In some embodiments of the present specification, the first flow regulating device 109 can be arranged at the communication part of the second interface 112 and the second channel 107. As shown in Figure 7 In the case where the second interface 112 is arranged on the second channel 107, the communication part of the second interface 112 and the second channel 107 is the second interface 112, and the first flow regulating device 109 can be arranged at the second interface 112. It can be understood that in the case where the second interface 112 is arranged between the second channel 107 and the external heat source 30, there is a second communication part 117 between the second interface 112 and the second channel 107, and the first flow regulating device 109 can be arranged at the second communication part 117.

[0112] In the embodiment, the first flow regulating device 109 is a three-way flow regulating valve 190. The three-way flow regulating valve 190 can regulate the flow of water in the second channel 107 from the first interface 111 to the external heat source 30, and the regulation can include gradually increasing or decreasing, or only opening and closing.

[0113] As shown in Figure 8 In some embodiments of the present specification, the first flow regulating device 109 can include a first valve 191 and a second valve 192. The first valve 191 can be arranged between the first interface 111 and the second interface 112, and the second valve 192 can be arranged between the first interface 111 and the external heat source 30. It can be understood that the second valve 192 can also be arranged between the second interface 112 and the external heat source 30. By regulating the first valve 191 and the second valve 192, the water flow from the first channel 106 or the second channel 107 to the external heat source 30 and the water flow directly back to the water inlet of the first heat exchanger 101 can be regulated.

[0114] As shown in Figure 9 In some embodiments of the present specification, the first flow regulating device 109 can include a third valve 193. As shown in Figure 9 The third valve 193 can be arranged between the first interface 111 and the external heat source 30. It can be understood that the third valve 193 can also be arranged between the second interface 112 and the external heat source 30. By regulating the third valve 193, the water flow from the first channel 106 or the second channel 107 to the external heat source 30 can be regulated.

[0115] In the embodiment, the first valve 191, the second valve 192 and the third valve 193 can be flow regulating valves. The flow regulating valves can regulate the water flow, and the regulation can include stepwise increase or decrease, or can only include opening and closing.

[0116] It is to be understood that Figure 10 In some embodiments of the present disclosure, the gas water heating device 10 can further comprise a second heat exchanger 103. The second heat exchanger 103 has a first flow passage 131 and a second flow passage 132 which are isolated from each other. An inlet of the first flow passage 131 can be in communication with the first channel 106 so that the water in the first channel 106 can flow into the inlet of the first flow passage 131. An outlet of the first flow passage 131 can be in communication with the second channel 107 so that the water flowing out of the outlet of the first flow passage 131 can flow into the second channel 107. The second flow passage 132 can be in communication with the domestic water device 40 for flowing the domestic water. The water flowing through the first flow passage 131 and the water flowing through the second flow passage 132 can exchange heat. By providing the second heat exchanger 103, the gas water heating device 10 can heat the domestic water to meet the hot water demand of the user.

[0117] As shown in Figure 10 In some embodiments of the present disclosure, the gas water heating device 10 can further comprise a second flow regulating device 115. The second flow regulating device 115 is used to divide the water flowing into the first channel 106 into the heating water outlet 104 and / or the inlet of the first flow passage 131. The second flow regulating device 115 can regulate the flow of the water flowing into the first channel 106 into the heating water outlet 104 and / or the inlet of the first flow passage 131, and the regulation can include stepwise increase or decrease, or can include opening and closing.

[0118] In the embodiment shown in Figure 10 In the embodiment shown in

[0119] It is to be understood that in some embodiments of the present disclosure, the second flow regulating device 115 can be arranged on the second channel 107, the first interface 111 and the second interface 112 can be arranged on the second channel 107, and the second flow regulating device 115 can be upstream of the first interface 111.

[0120] In some embodiments of the present disclosure, the second flow regulating device 115 can be arranged on the first channel 106, the first interface 111 and the second interface 112 can be arranged on the first channel 106, and the second flow regulating device 115 can be downstream of the second interface 112.

[0121] In some embodiments of the present disclosure, the second flow regulating device 115 can be arranged on the second passage 107, and the first interface 111 and the second interface 112 can be arranged on the first passage 106.

[0122] In Figure 10 In the illustrated embodiment, the outlet of the first flow passage 131 and the second passage 107 have a third communication portion 118 on the second passage 107. The first interface 111 and the second interface 112 can be arranged on the second passage 107 and downstream of the third communication portion 118. As Figure 10 illustrated, the pump 108 is arranged between the third communication portion 118 and the first interface 111. It can be understood that the pump 108 can also be arranged at the communication portion, or arranged between the second interface 112 and the water inlet of the first heat exchanger 101.

[0123] The present disclosure also provides a heating system. Figure 11 A structure schematic diagram of a heating system in an embodiment of the present disclosure is shown. As Figure 11 illustrated, the heating system 1 can include the gas water heater 10 in any of the above embodiments. The heating system 1 can also include an indoor heating system 120 and an external heat source 30. The inlet of the indoor heating system 120 is connected to the heating water outlet 104, and the outlet of the indoor heating system 120 is connected to the heating water return port 105. The external heat source 30 has a first communication port 301 connected to the first interface 111, and a second communication port 302 connected to the second interface 112. The water flowing out of the first interface 111 can flow into the first communication port 301. After being heated by the external heat source 30, the water flows to the second interface 112 through the second communication port 302.

[0124] The heating system 1 in the embodiment of the present specification includes a gas water heater 10, an indoor heating system 120 and an external heat source 30. The gas water heater 10 flows the water in the first heat exchanger 101 into the indoor heating system 120 via a first channel 106 between the water outlet of the first heat exchanger 101 and the heating water outlet, and then flows the water refluxed from the indoor heating system 120 into the first heat exchanger 101 via a second channel 107 provided between the water inlet of the first heat exchanger 101 and the heating water inlet, thereby supplying heat to the indoor heating system 120, thereby enabling early heating or extended heating in the northern centralized heating area according to user needs; further, the gas water heater 10 can flow the water flowing into the first channel 120 via the first interface 111 by providing a first interface 111 and a second interface 112 connected to the first channel 106 or the second channel 107. 06 or at least part of the water in the second channel 107 is led out to the external heat source 30 for heating, and then the water heated by the external heat source 30 flows into the first channel 106 or the second channel 107 via the second interface 112. By setting the first flow regulating device 109, the water flow to the first interface 111 can be adjusted, that is, the water flow from the first channel 106 or the second channel 107 via the first interface 111 to the external heat source 30 and then back to the first channel 106 or the second channel 107 via the second interface 112. Therefore, the water flow for heat exchange with the external heat source 30 can be adjusted to adjust the water temperature in the first channel 106 or the second channel 107, and then the water temperature flowing into the indoor heating system 120 connected to the first channel 106 and the second channel 107 can be adjusted, thereby realizing indoor temperature control and meeting the user's heating needs in an energy-saving and comfortable manner.

[0125] like Figure 11 As shown, in some embodiments of this specification, the external heat source 30 may include a third heat exchanger 303. The third heat exchanger 303 may include a first water flow path 331 and a second water flow path 332. The first connection port 301 and the second connection port 302 are connected to the first water flow path 331. The second water flow path 332 is used to connect to the municipal heating system 2, and the municipal heating water flows through the second water flow path 332. The water flowing through the first water flow path 331 and the water flowing through the second water flow path 332 exchange heat. The provision of the third heat exchanger 303 enables the municipal heating system 2 to heat the heating water. Furthermore, compared to the prior art method of directly connecting the municipal heating system 2 to the gas water heater 10, the provision of the third heat exchanger 303 in this embodiment allows the heat of the municipal heating water to be utilized through heat exchange. This prevents the municipal heating water from directly entering the heat exchanger and water channels within the gas water heater, which could cause water contamination and blockage. This can extend the service life of the gas water heater and improve the user experience.

[0126] In some embodiments of the present disclosure, the third heat exchanger 303 is arranged at a predetermined position in the room. By arranging the third heat exchanger 303 at the predetermined position in the room, the adjustment, installation, maintenance and use of the third heat exchanger 303 can be facilitated.

[0127] The present disclosure also provides a heating system control method. The heating system control method is based on the heating system of any of the above embodiments. Figure 12 A flowchart of the heating system control method according to an embodiment of the present disclosure is shown. Although the present disclosure provides the method operation steps or device structures as shown in the following embodiments or drawings, more or fewer operation steps or module units can be included in the method or device based on convention or without creative labor. The execution order of the steps or the module structure of the device is not limited to the execution order or module structure shown in the embodiments of the present disclosure and the drawings in the absence of necessary causal relationship in logic. When the method or module structure is applied to the actual device or terminal product, it can be executed in sequence or in parallel (for example, parallel processor or multi-threaded environment, even distributed processing environment) according to the method or module structure shown in the embodiments or drawings.

[0128] Specifically, as shown in the present disclosure, the heating system control method according to an embodiment of the present disclosure can include the following steps. Figure 12

[0129] In step 1201, the working state of the external heat source is obtained.

[0130] The method according to the present embodiment can be applied to a heating system. Specifically, the method according to the present embodiment can be applied to a controller of a heating system. In one embodiment, the controller of the heating system can be arranged in a gas water heater. In another embodiment, the controller of the heating system is a controller of the gas water heater.

[0131] The controller can obtain the working state of the external heat source.

[0132] In one embodiment, the working state of the external heat source can include an on state and an off state. In one embodiment, the controller can receive a corresponding signal when the external heat source is working or stopping working. The controller can determine whether the external heat source is working according to the received signal.

[0133] ​In another embodiment, the working state of the external heat source can include an available state and an unavailable state. The available state means that the external heat source can heat the heating water flowing into the external heat source, so that the temperature of the heating water is increased. The unavailable state means that the external heat source can absorb heat from the heating water flowing into the external heat source, so that the temperature of the heating water is decreased. In one embodiment, the controller can compare the temperature of the water flowing into the external heat source with the temperature of the water flowing out of the external heat source to obtain the working state of the external heat source.

[0134] In yet another embodiment, the working state of the external heat source can include temperature data of a heat exchange medium in the external heat source for heat exchange with the heating water. In one embodiment, the controller can compare the temperature of the heating water with the temperature data of the heat exchange medium in the external heat source to obtain the working state of the external heat source.

[0135] Step 1202, according to the working state of the external heat source, controlling the first flow adjusting device to adjust the water flow from the first interface into the external heat source.

[0136] After obtaining the working state of the external heat source, the controller can control the first flow adjusting device to adjust the water flow from the first interface into the external heat source according to the working state of the external heat source. In this embodiment, controlling the first flow adjusting device to adjust the water flow from the first interface into the external heat source can mean gradually adjusting the water flow, and can also mean opening and closing the water flow.

[0137] In the above-mentioned embodiments, according to the working state of the external heat source, the first flow adjusting device is controlled to adjust the flow into the external heat source, so that the indoor heating system can realize indoor temperature control and intelligent multi-energy switching, and can meet the heating needs of users in an energy-saving and comfortable manner.

[0138] In some embodiments of the present specification, the working state of the external heat source can include an open state and a non-open state. Accordingly, according to the working state of the external heat source, controlling the first flow adjusting device to adjust the water flow from the first interface into the external heat source can include: if the external heat source is in the open state, controlling the first flow adjusting device so that at least part of the water flow flows from the first interface into the external heat source; and if the external heat source is in the non-open state, controlling the first flow adjusting device so that the water flow does not flow from the first interface into the external heat source. In this embodiment, when the external heat source is in the open state, at least part of the water flow flows from the first interface into the external heat source for heating, which can heat the heating water by using the external heat source, so that the indoor heating system can use the heat of the external heat source. When the external heat source is in the non-open state, the water flow does not flow from the first interface into the external heat source, so as to avoid the temperature of the heating water from being decreased.

[0139] In some embodiments of the present disclosure, the gas water heating device can comprise a first temperature sensor and a second temperature sensor. The first temperature sensor is located upstream of the first interface and can be used to detect the temperature of water flowing into the first interface. The second temperature sensor is located downstream of the second interface and can be used to detect the temperature of water flowing out of the second interface. The control method can further comprise: obtaining a first temperature detected by the first temperature sensor and a second temperature detected by the second temperature sensor; and controlling the first flow regulating device to adjust the water flow rate flowing into the external heat source from the first interface according to the first temperature and the second temperature when the external heat source is in operation. In the case that the external heat source is in operation, the heating condition of the external heat source for the heating water flowing therein can be further determined according to the temperature of water flowing into the first interface and the temperature of water flowing out of the second interface, and the water flow rate flowing into the external heat source can be further adjusted according to the heating condition, which can further improve the accuracy of water temperature adjustment.

[0140] In some embodiments of the present disclosure, controlling the first flow regulating device to adjust the water flow rate flowing into the external heat source from the first interface according to the first temperature and the second temperature can comprise: in the case that the first temperature is less than the second temperature, controlling the first flow regulating device such that the water flow rate flowing into the external heat source from the first interface is increased; and in the case that the first temperature is not less than the second temperature, controlling the first flow regulating device such that the water flow rate flowing into the external heat source from the first interface is decreased. In the present embodiment, in the case that the first temperature is less than the second temperature, it indicates that the external heat source can heat the heating water, and at this time, the first channel or the second channel can be connected to the external heat source or the flow rate of the first channel or the second channel flowing into the external heat source from the first interface can be increased. In the case that the first temperature is not less than the second temperature, it indicates that the external heat source cannot heat the heating water, and at this time, the first channel or the second channel can be disconnected from the external heat source or the flow rate of the first channel or the second channel flowing into the external heat source from the first interface can be decreased until the first temperature is less than or equal to the second temperature. In the above manner, the flow rate can be adjusted according to the temperature of water flowing into the first interface and the temperature of water flowing out of the second interface.

[0141] In some embodiments of the present disclosure, the working state of the external heat source can include an available state and an unavailable state. Accordingly, the method of controlling the first flow regulating device to regulate the water flow from the first interface to the external heat source according to the working state of the external heat source can include: if the external heat source is in the available state, controlling the first flow regulating device to allow at least part of the water flow to flow from the first interface to the external heat source; and if the external heat source is in the unavailable state, controlling the first flow regulating device to prevent the water flow from flowing from the first interface to the external heat source. In this embodiment, when the external heat source can heat the heating water, at least part of the water flow is allowed to flow from the first interface to the external heat source for heating, so that the external heat source can heat the heating water, and the indoor heating system can utilize the heat of the external heat source. When the external heat source cannot heat the heating water, the water flow is prevented from flowing from the first interface to the external heat source, so as to avoid the heating water flowing into the external heat source and reducing the temperature.

[0142] In some embodiments of the present disclosure, the method of controlling the heating system can further include: if the first temperature is less than the second temperature when the external heat source is in operation, determining that the external heat source is in the available state; and if the first temperature is not less than the second temperature when the external heat source is in operation, determining that the external heat source is in the unavailable state. In this embodiment, the first temperature and the second temperature can be used to determine whether the external heat source is available.

[0143] In some embodiments of the present disclosure, the working state of the external heat source can include temperature data of a heat exchange medium in the external heat source for exchanging heat with the heating water. The controller can compare the temperature of the heating water upstream of the first interface with the temperature data of the heat exchange medium in the external heat source to obtain the working state of the external heat source. Accordingly, the method of controlling the first flow regulating device to regulate the water flow from the first interface to the external heat source according to the working state of the external heat source can include: controlling the first flow regulating device to regulate the water flow from the first interface to the external heat source according to the temperature difference between the temperature of the heat exchange medium and the temperature of the heating water. In this embodiment, when the temperature data of the heat exchange medium in the external heat source indicates that the temperature of the heat exchange medium in the external heat source is higher than the temperature of the heating water upstream of the first interface, the water flow from the first interface to the external heat source can be determined according to the temperature difference between the temperature of the heat exchange medium and the temperature of the heating water. The greater the temperature difference, the greater the water flow.

[0144] In some embodiments of the present disclosure, the control method can further include: obtaining a heating water outlet set temperature of the gas water heater and the second temperature detected by the second temperature sensor; and controlling the burner to determine whether to start operation according to the heating water outlet set temperature and the second temperature.

[0145] In this embodiment, the controller can further acquire the heating water outlet set temperature of the gas water heating device and the second temperature of the heating water downstream of the second interface detected by the second temperature sensor, and then control the burner to start working according to the heating water outlet set temperature and the second temperature, that is, to determine whether to start the burner to heat the heating water according to the set temperature and the second temperature. In this embodiment, the burner can be controlled in combination with the second temperature and the set temperature, so that the heating water can meet the heating demand of the user.

[0146] In some embodiments of the present specification, controlling the burner to start working according to the heating water outlet set temperature and the second temperature can include: controlling the burner to heat the first heat exchanger when the second temperature is lower than the heating water outlet set temperature; and controlling the burner to stop heating when the second temperature is not lower than the heating water outlet set temperature. In this embodiment, when the second temperature is lower than the set temperature, the burner can be controlled to heat the first heat exchanger to meet the heating demand of the user. When the second temperature is not lower than the heating water outlet set temperature, the burner can be controlled to stop heating to avoid the temperature of the heating water being too high.

[0147] In some embodiments of the present specification, the heating system control method can further include: acquiring the heating water outlet set temperature of the gas water heating device and the second temperature detected by the second temperature sensor; and controlling the first flow regulating device to reduce the water flow from the first interface to the external heat source when the second temperature is greater than the heating water outlet set temperature and the difference between the second temperature and the heating water outlet set temperature is greater than a preset temperature difference.

[0148] In this embodiment, when the second temperature is too high, it indicates that the external heat source provides too much heat to the heating water, and the first flow regulating device can be controlled to reduce the water flow from the first interface to the external heat source, so as to reduce the temperature of the heating water downstream of the second interface, and further avoid the temperature of the heating water outlet being too high.

[0149] Each of the embodiments in the present specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other. Each embodiment mainly describes the difference from other embodiments. For specific details, refer to the description of the related processing embodiments described above, which will not be repeated here.

[0150] The above describes particular embodiments of the present specification. Other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims can be performed in a different order than the order described in the embodiments and still achieve the desired result. In addition, the processes depicted in the figures do not necessarily require the particular order shown or sequential order in order to achieve the desired results. In some implementations, multitasking and parallel processing can be advantageous or possible.

[0151] It is to be understood that the above description is intended to be illustrative, and not restrictive. Many embodiments and many applications other than the examples provided will be apparent to those of skill in the art upon reading the above description. The scope of the specification should, therefore, be determined not with reference to the above description, but should instead be determined with reference to the appended claims, along with their full scope of equivalents.

[0152] The above descriptions are only preferred embodiments of the present specification, and are not intended to limit the present specification. The embodiments of the present specification can be variously changed and modified by those skilled in the art. Any modified, equivalent replaced, improved, etc. within the spirit and principle of the present specification should be included in the protection scope of the present specification.

Claims

1. A gas water heating apparatus, characterised in that, The gas water heating device comprises: a first heat exchanger; a burner for heating the first heat exchanger; a heating water outlet for inputting water into an indoor heating system and a heating water return for receiving water returned from the indoor heating system; a first channel arranged between an outlet of the first heat exchanger and the heating water outlet and a second channel arranged between an inlet of the first heat exchanger and the heating water return; a first interface and a second interface in communication with the first channel or the second channel, the first interface being upstream of the second interface, the first interface being used for leading at least part of water flowing into the first channel or the second channel to an external heat source, the second interface being used for leading water heated by the external heat source to flow into the first channel or the second channel; a pump arranged on the first channel or the second channel, the pump being used for driving water flowing into the second channel from the heating water return to flow from the first channel to the heating water outlet after passing through the first heat exchanger; a first flow regulating device for regulating the flow of water flowing to the first interface.

2. The gas water heating apparatus according to claim 1, wherein The gas water heating device further comprises a first port and a second port, the first port being in communication with the first interface through a pipeline, and the second port being in communication with the second interface through a pipeline.

3. The gas water heating apparatus according to claim 2, wherein The gas water heating device comprises a housing, and the heating water outlet, the heating water return, the first port and the second port are located outside the housing.

4. The gas water heating apparatus according to claim 1, wherein The pump is arranged upstream of the first interface or downstream of the second interface.

5. The gas water heating apparatus according to claim 1, wherein The gas water heating device further comprises a second heat exchanger, the second heat exchanger having a first flow passage and a second flow passage isolated from each other, an inlet of the first flow passage being in communication with the first channel so that water in the first channel can flow into the inlet of the first flow passage, an outlet of the first flow passage being in communication with the second channel so that water flowing out of the outlet of the first flow passage can flow into the second channel, and the second flow passage being used for circulating domestic water, water flowing through the first flow passage and water flowing through the second flow passage being capable of exchanging heat.

6. The gas water heating apparatus according to claim 5, wherein The gas water heating device further comprises a second flow regulating device for dividing water flowing into the first channel into the heating water outlet and / or the inlet of the first flow passage.

7. The gas water heating apparatus according to claim 6, wherein The second flow regulating device is arranged on the first channel, the first interface and the second interface are arranged on the first channel, and the second flow regulating device is located downstream of the second interface.

8. The gas water heating apparatus according to claim 5, wherein The outlet of the first flow passage and the second channel have a communication part located on the second channel; The first interface and the second interface are arranged on the second channel and located downstream of the communication part, and the pump is arranged at the communication part or between the communication part and the first interface or between the second interface and the inlet of the first heat exchanger.

9. The gas water heating apparatus according to claim 1, wherein The gas water heating device further comprises a first temperature sensor and a second temperature sensor; the first temperature sensor is located upstream of the first interface, and the second temperature sensor is located downstream of the second interface.

10. The gas water heating apparatus according to claim 1, wherein The first flow regulating device is arranged at a communication part between the first interface and the first channel or the second channel, or the first flow regulating device is arranged at a communication part between the second interface and the first channel or the second channel, and the first flow regulating device is a three-way flow regulating valve.

11. The gas water heating apparatus according to claim 1, wherein The first flow regulating device comprises a first valve and a second valve; the first valve is arranged between the first interface and the second interface, and the second valve is arranged between the first interface and the external heat source or arranged between the second interface and the external heat source.

12. The gas water heating apparatus according to claim 1, wherein The first flow regulating device comprises a third valve, which is arranged between the first interface and the external heat source or arranged between the second interface and the external heat source.

13. A heating system, characterized by The heating system comprises the gas water heating device according to any one of claims 1 to 12; The heating system further comprises: an indoor heating system, an inlet of the indoor heating system being connected to the heating water outlet, and an outlet of the indoor heating system being connected to the heating water return inlet; an external heat source, the external heat source having a first connection port connected to the first interface and a second connection port connected to the second interface, and water flowing out of the first interface being able to flow into the first connection port, heated by the external heat source, and then flow to the second interface through the second connection port.

14. The heating system of claim 13, wherein, The external heat source comprises a third heat exchanger, the third heat exchanger comprising a first water flow path and a second water flow path, the first connection port and the second connection port being connected to the first water flow path, and the second water flow path being used for connecting to municipal heating, and the second water flow path being used for flowing municipal heating water, and water flowing through the first water flow path and water flowing through the second water flow path performing heat exchange.

15. The heating system of claim 14, wherein, The third heat exchanger is arranged at a predetermined position in a room.

16. A heating system control method characterized by, The heating system control method is based on the heating system according to any one of claims 13 to 15, and the heating system control method comprises: obtaining a working state of the external heat source; controlling the first flow regulating device to regulate the water flow from the first interface to the external heat source according to the working state of the external heat source.

17. The heating system control method according to claim 16, wherein controlling the first flow regulating device to regulate the water flow from the first interface to the external heat source according to the working state of the external heat source, comprising: if the external heat source is in an open state, controlling the first flow regulating device so that at least part of the water flow flows from the first interface to the external heat source; if the external heat source is in a non-open state, controlling the first flow regulating device so that no water flow flows from the first interface to the external heat source.

18. The heating system control method according to claim 16, wherein The gas water heating device comprises a first temperature sensor and a second temperature sensor; the first temperature sensor is located upstream of the first interface, and the second temperature sensor is located downstream of the second interface. The control method further comprises: obtaining a first temperature detected by the first temperature sensor and a second temperature detected by the second temperature sensor; In the case that the external heat source is in operation, the first flow adjusting device is controlled to adjust the water flow from the first interface to the external heat source according to the first temperature and the second temperature.

19. The heating system control method according to claim 18, wherein The first flow adjusting device is controlled to adjust the water flow from the first interface to the external heat source according to the first temperature and the second temperature, comprising: In the case that the first temperature is less than the second temperature, the first flow adjusting device is controlled to increase the water flow from the first interface to the external heat source; In the case that the first temperature is not less than the second temperature, the first flow adjusting device is controlled to decrease the water flow from the first interface to the external heat source.

20. The heating system control method according to claim 18, wherein Further comprising: In the case that the external heat source is in operation, if the first temperature is less than the second temperature, it is determined that the external heat source is in available state; In the case that the external heat source is in operation, if the first temperature is not less than the second temperature, it is determined that the external heat source is in unavailable state.

21. The heating system control method according to claim 18, wherein The control method further comprises: obtaining a heating water outlet set temperature of the gas water heating device and a second temperature detected by the second temperature sensor; controlling the burner to determine whether to operate according to the heating water outlet set temperature and the second temperature.

22. The heating system control method according to claim 21, wherein The control method further comprises: obtaining a heating water outlet set temperature of the gas water heating device and a second temperature detected by the second temperature sensor; controlling the burner to determine whether to operate according to the heating water outlet set temperature and the second temperature.

23. The heating system control method according to claim 18, wherein The control method further comprises: In the case that the second temperature is lower than the heating water outlet set temperature, the burner is controlled to heat the first heat exchanger; In the case that the second temperature is not lower than the heating water outlet set temperature, the burner is controlled to stop heating. Further comprising: obtaining a heating water outlet set temperature of the gas water heating device and a second temperature detected by the second temperature sensor; In the case that the second temperature is greater than the heating water outlet set temperature and the difference between the second temperature and the heating water outlet set temperature is greater than a preset temperature difference, the first flow adjusting device is controlled to decrease the water flow from the first interface to the external heat source.

Images