Gas water heating device and heating system

Abstract

The utility model relates to the technical field of water heating, and particularly discloses a gas water heating device and a heating system. 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 invention relates to the technical field of water heating, and in particular to a gas water heater and a heating system. Background Art

[0002] In existing central heating areas, there are some limitations and problems with the heating system. First, the development time of heating is limited, and users often hope to use the heating service earlier. Second, the heating temperature cannot be effectively controlled. When the temperature of central heating is low, the heat cannot be replenished in time, and the user's heating experience is poor; and when the temperature of central heating reaches a certain level, the excess heat cannot be used to heat domestic water, resulting in insufficient energy utilization and lack of energy-saving and environmental protection characteristics.

[0003] In addition, if the central heating system is directly connected to the wall-mounted boiler equipment, there may be problems with dirt and blockage, which will have a negative impact on the life of the wall-mounted boiler.

[0004] To address the above problems, no effective solution has been proposed yet. Utility Model Content

[0005] The embodiments of this specification provide a gas water heater and a heating system to solve the problem in the prior art that users in central heating areas cannot be heated in advance and indoor temperature control cannot be achieved.

[0006] The embodiment of this specification provides a gas water heater, comprising:

[0007] a first heat exchanger;

[0008] a burner, the burner being used to heat the first heat exchanger;

[0009] A heating water outlet and a heating water return port, wherein the heating water outlet is used to input water into the indoor heating system, and the heating water return port is used to receive water returned from the indoor heating system;

[0010] A first channel is provided between the water outlet of the first heat exchanger and the heating water outlet, and a second channel is provided between the water inlet of the first heat exchanger and the heating water return port;

[0011] a first interface and a second interface in communication with the first channel or the second channel, the first interface being located upstream of the second interface, the first interface being used to lead 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 used to allow water heated by the external heat source to flow into the first channel or the second channel;

[0012] A pump disposed on the first channel or the second channel, the pump being capable of driving the water flowing from the heating water return port into the second channel to flow through the first heat exchanger and then flow from the first channel to the heating water outlet;

[0013] A first flow regulating device, wherein the first flow regulating device is used to regulate the water flow to the first interface.

[0014] In one embodiment, the gas water heater further includes a first port and a second port, wherein the first port is in communication with the first interface via a pipeline; and the second port is in communication with the second interface via a pipeline.

[0015] In one embodiment, the gas water heater comprises a shell, and the heating water outlet, the heating water return port, the first port, and the second port are located outside the shell.

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

[0017] In one embodiment, the gas water heater further includes a second heat exchanger having a first flow channel and a second flow channel isolated from each other, the inlet of the first flow channel being connectable with the first channel so that water in the first channel can flow into the inlet of the first flow channel, the outlet of the first flow channel being connectable with the second channel so that water flowing out of the outlet of the first flow channel can flow into the second channel, the second flow channel is used for circulating domestic water, and water flowing through the first flow channel and water flowing through the second flow channel can undergo heat exchange.

[0018] In one embodiment, the gas water heater further comprises a second flow regulating device, and the second flow regulating device is used to divert the water flowing into the first channel to the heating water outlet and / or the inlet of the first flow channel.

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

[0020] In one embodiment, the outlet of the first flow channel and the second channel have a connecting portion located on the second channel;

[0021] The first interface and the second interface are arranged on the second channel and are located downstream of the connecting part, and the pump is arranged at the connecting part or between the connecting part 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 heater further includes 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 arranged at the connecting part between the first interface and the first channel or the second channel, or the first flow regulating device is arranged at the connecting 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.

[0024] In one embodiment, the first flow regulating device includes 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 between the second interface and the external heat source.

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

[0026] The embodiments of this specification also provide a heating system, including the gas water heater described in any of the above embodiments;

[0027] The heating system also includes:

[0028] An indoor heating system, wherein the inlet of the indoor heating system is connected to the heating water outlet, and the outlet of the indoor heating system is connected to the heating water return port;

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

[0030] In one embodiment, the external heat source includes a third heat exchanger, and the third heat exchanger includes a first water flow path and a second water flow path. The first connection port and the second connection port are connected to the first water flow path, and the second water flow path is used to connect to municipal heating. The second water flow path is used to circulate municipal heating water, and water flowing through the first water flow path and water flowing through the second water flow path are heat exchanged.

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

[0032] The technical solution of this specification has the following significant beneficial effects:

[0033] The gas water heater in the embodiment of the present specification allows the water in the first heat exchanger to flow into the indoor heating system via the first channel between the water outlet of the first heat exchanger and the heating water outlet, and then allows the water returned from the indoor heating system to flow into the first heat exchanger via the second channel arranged between the water inlet of the first heat exchanger and the heating water inlet, so that heat can be supplied to the indoor heating system, so that heating can be provided in advance or extended in the northern centralized heating area according to user needs; further, by providing a first interface and a second interface connected to the first channel or the second channel, at least part of the water flowing into the first channel or the second channel can be discharged through the first interface. The water is led out to an external heat source for heating, and then the water heated by the external heat source flows into the first channel or the second channel via the second interface. By setting a first flow regulating device, the water flow to the first interface can be adjusted, that is, the water flow from the first channel or the second channel into the external heat source via the first interface and then flows back to the first channel or the second channel via the second interface. Therefore, the water flow for heat exchange with the external heat source can be adjusted to adjust the water temperature in the first channel or the second channel, and then the water temperature flowing into the indoor heating system connected to the first channel and the second channel can be adjusted, thereby realizing indoor temperature control and meeting the user's heating needs in an energy-saving and comfortable manner.

[0034] With reference to the following description and drawings, specific embodiments of the present invention are disclosed in detail, indicating the manner in which the principles of the present invention can be adopted. It should be understood that the embodiments of the present invention are not limited in scope. Features described and / or shown for one embodiment can be used in one or more other embodiments in the same or similar manner, combined with features in other embodiments, or replace features in other embodiments.

[0035] It should be emphasized that the term “include / comprises” when used herein refers to the presence of features, parts, steps or components, but does not exclude the presence or addition of one or more other features, parts, steps or components. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The drawings described herein are only for explanation purposes and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the components in the drawings are only for illustration purposes and are used to help understand the present invention. They do not specifically limit the shapes and proportional dimensions of the components of the present invention. Under the guidance of the present invention, those skilled in the art can select various possible shapes and proportional dimensions to implement the present invention according to specific circumstances. In the drawings:

[0037] Figure 1 It shows a schematic diagram of the structure of a gas water heater in one embodiment of this specification;

[0038] Figure 2It shows a schematic diagram of the structure of a gas water heater in one embodiment of this specification;

[0039] Figure 3 It shows a schematic diagram of the structure of a gas water heater in one embodiment of this specification;

[0040] Figure 4 It shows a schematic diagram of the structure of a gas water heater in one embodiment of this specification;

[0041] Figure 5 It shows a schematic diagram of the structure of a gas water heater in one embodiment of this specification;

[0042] Figure 6 It shows a schematic diagram of the structure of a gas water heater in one embodiment of this specification;

[0043] Figure 7 It shows a schematic diagram of the structure of a gas water heater in one embodiment of this specification;

[0044] Figure 8 It shows a schematic diagram of the structure of a gas water heater in one embodiment of this specification;

[0045] Fig. 9 It shows a schematic diagram of the structure of a gas water heater in one embodiment of this specification;

[0046] Fig.10 A schematic diagram of the structure of a heating system in an embodiment of this specification is shown;

[0047] Fig.11 A schematic diagram of the structure of a heating system in an embodiment of this specification is shown;

[0048] Fig.12 A flow chart of a heating system control method in an embodiment of the present specification is shown.

[0049] Reference numerals of the above drawings:

[0050] 1. Heating system; 2. Municipal heating;

[0051] 10. Gas water heater; 100. Shell; 101. First heat exchanger; 102. Burner; 103. Second heat exchanger; 104. Heating water outlet; 105. Heating water return port; 106. First channel; 107. Second channel; 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 connecting portion; 117. Second connecting portion; 118. Third connecting portion; 131. First flow channel; 132. Second flow channel;

[0052] 20. Indoor heating system;

[0053] 30, external heat source; 301, first connection port; 302, second connection port; 303, third heat exchanger; 331, first water flow path; 332, second water flow path;

[0054] 40. Domestic water supply equipment. DETAILED DESCRIPTION

[0055] The principles and spirit of this specification will be described below with reference to several exemplary embodiments. It should be understood that these embodiments are provided only to enable those skilled in the art to better understand and implement this specification, and are not intended to limit the scope of this specification in any way. On the contrary, these embodiments are provided to make this specification more thorough and complete, and to fully convey the scope of this disclosure to those skilled in the art.

[0056] In combination with the accompanying drawings and the description of the specific embodiments of the present invention, the details of the present invention can be more clearly understood. However, the specific embodiments of the present invention described herein are only used to explain the purpose of the present invention and cannot be understood as limiting the present invention in any way. Under the guidance of the present invention, technicians can conceive of any possible variations based on the present invention, which should be regarded as belonging to the scope of the present invention. It should be noted that when an element is referred to as "disposed on" another element, it can be directly on the other element or there can also be a central element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be a central element at the same time. The terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, or it can be the internal communication of two elements, it can be directly connected, or it can be indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings 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 only for illustrative purposes and do not represent the only implementation method.

[0057] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this specification belongs. The terms used herein in this specification are only for the purpose of describing specific embodiments and are not intended to limit this specification. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0058] The embodiments of this specification provide a gas water heater. Figures 1 to 10FIG. 1 shows a schematic diagram of the structure of a gas water heater 10 in an embodiment of the present specification. Figures 1 to 10 As shown, the gas water heater 10 may include: a first heat exchanger 101, a burner 102, a heating water outlet 104 and a heating water return port 105, a first channel 106 and a second channel 107, a first interface 111 and a second interface 112, a pump 108, and a first flow regulating device 109.

[0059] The burner 102 is used for gas combustion. In one embodiment, the burner 102 and the first heat exchanger 101 can be arranged opposite to each other and can supply heat energy to the first heat exchanger 101. The burner 102 can be in a burning state and a closed state. In the burning state, it is used to heat the first heat exchanger 101. The first heat exchanger 101 heats the water flowing through it under the heat energy supplied by the burner 102, thereby obtaining hot water that meets the demand. As a feasible example, Figures 1 to 8 As shown, the first heat exchanger 101 may be located above the burner 102, and the high-temperature flue gas generated by the burner 102 flows through the first heat exchanger 101. The entire burner 102 extends generally in the horizontal direction, and the first heat exchanger 101 may also extend generally in the same horizontal direction as the burner 102.

[0060] The heating water outlet 104 is connected to the outlet of the first heat exchanger 101 for inputting water into the indoor heating system 20. The heating water return port 105 is connected to the inlet of the first heat exchanger 101 for receiving water returned from the indoor heating system 20.

[0061] The first channel 106 is disposed between the water outlet of the first heat exchanger 101 and the heating water outlet 104, and can flow the water flowing out of the water outlet of the first heat exchanger 101 to the heating water outlet 104. The second channel 107 is disposed between the water inlet of the first heat exchanger 101 and the heating water return port 105, and can return the water flowing out of the indoor heating system 20 to the water inlet of the first heat exchanger 101 via the heating water return port 105.

[0062] In one embodiment, Figures 1 to 4 As shown, the first interface 111 and the second interface 112 can be connected to the first channel 106. Figure 1 , Figure 3 and Figure 4 In the illustrated embodiment, the first interface 111 and the second interface 112 may be disposed on the first channel 106. Figure 2 In the illustrated embodiment, the first interface 111 and the second interface 112 may be disposed 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 may be located upstream of the second interface 112. The first interface 111 may 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 may be used to allow water heated by the external heat source 30 to flow into the first channel 106. Figure 1 In the illustrated embodiment, water flowing out of the water outlet of the first heat exchanger 101 flows into the first channel 106, flows into the external heat source 30 via the first interface 111 for heating, and the heated water flows back to the first channel 106 via the second interface 112, and then flows into the indoor heating system 20 via the heating water outlet 104. After the water in the indoor heating system 20 flows back, it flows back to the second channel 107 via the heating water return port 105, and then flows back to the water inlet of the first heat exchanger 101 via the second channel 107.

[0063] 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, 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 an example is shown in which the first interface 111 and the second interface 112 are arranged on the second channel 107. It can be understood that in some embodiments of the present specification, the first interface 111 and the second interface 112 can also be arranged between the second channel 107 and the external heat source 30. That is, there is a first connecting portion 116 between the first interface 111 and the second channel 107. There is a second connecting portion 117 between the second interface 112 and the second channel 107.

[0064] In this embodiment, the external heat source 30 heating the water flowing into it may refer to heat exchange between the external heat source 30 and the water flowing into it. In one embodiment, the external heat source 30 heats the water flowing into it, so that the temperature of the water flowing out of it is higher than that of the water flowing into it. In another embodiment, the external heat source 30 absorbs heat from the water flowing into it, so that the temperature of the water flowing out of it is lower than that of the water flowing into it.

[0065] In this embodiment, the external heat source 30 may be a gas water heater, an electric water heater or municipal heating, etc.

[0066] The pump 108 can be disposed in the first channel 106 or the second channel 107. The pump 108 can 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. For example, Figures 1 to 10 As shown, a pump 108 may be disposed in the second channel 107 .

[0067] 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 connecting portion between the first interface 111 and the first channel 106 or the second channel 107, at the connecting portion 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.

[0068] The first flow regulating device 109 can be used to regulate the flow of water flowing from the first channel 106 or the second channel 107 into the external heat source 30 via the first interface 111 and then flowing back to the first channel 106 or the second channel 107 via the second interface 112. In other words, the first flow regulating device 109 can regulate the flow of water in the first channel 106 or the second channel 107 entering the external heat source 30 for heating. By regulating the water flow to the first interface 111 by 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.

[0069] In the above embodiment, water in the first heat exchanger 101 flows into the indoor heating system 20 via the first channel 106 between the water outlet of the first heat exchanger 101 and the heating water outlet, and then water refluxed from the indoor heating system 20 flows into the first heat exchanger 101 via the second channel 107 provided 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, so that heating can be provided in advance or extended in the northern centralized heating area according to user needs; further, by providing a first interface 111 and a second interface 112 connected to 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 via the first interface 111. 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 into the external heat source 30 via the first interface 111 and then flows back to the first channel 106 or the second channel 107 via the second interface 112. 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 20 connected to the first channel 106 and the second channel 107 can be adjusted, thereby achieving indoor temperature control and meeting the user's heating needs in an energy-saving and comfortable manner.

[0070] Please continue to refer to Figures 1 to 10 In some embodiments of the present specification, the gas water heater 10 may further include a first port 113 and a second port 114. The first port 113 is connected to the first interface 111 through a pipeline. The second port 114 is connected to the second interface 112 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.

[0071] In one embodiment, the first flow regulating device 109 may be disposed on a pipeline between the first interface 111 and the first port 113. In another embodiment, the first flow regulating device 109 may be disposed on a pipeline between the second interface 112 and the second port 114. In yet another embodiment, the first flow regulating device 109 may be disposed on a connecting portion between the first interface 111 or the second interface 112 and the first channel 106 or the second channel 107.

[0072] like Figures 1 to 10As shown, in some embodiments of the present specification, the gas water heater 10 may include a housing 100 .

[0073] 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 .

[0074] 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 convenient to connect the heating water outlet 104, the heating water return port 105 with the indoor heating system 20, and the first port 113, the second port 114 with the external heat source 30, so as to facilitate disassembly and installation.

[0075] 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 also can 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.

[0076] 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 into the external heat source 30 from the first interface 111 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 according to the temperature change to adjust the flow rate flowing into the external heat source 30, thereby controlling the water temperature flowing into the indoor heating equipment.

[0077] In some embodiments of the present specification, the first flow regulating device 109 may be disposed at the connecting portion between the first interface 111 and the first channel 106. Figure 3As shown, when the first interface 111 is disposed on the first channel 106, the communicating portion between the first interface 111 and the first channel 106 is the first interface 111, and the first flow regulating device 109 can be disposed at the first interface 111. It can be understood that when the first interface 111 is disposed between the first channel 106 and the external heat source 30, there is a first communicating portion 116 between the first interface 111 and the first channel 106, and the first flow regulating device 109 can be disposed at the first communicating portion 116.

[0078] 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 flowing from the first interface 111 into the external heat source 30, and the regulation here can include gradually increasing or decreasing, and can also include opening and closing.

[0079] In some embodiments of the present specification, the first flow regulating device 109 is disposed at the connecting portion between the second interface 112 and the first channel 106. Figure 4 As shown, when the second interface 112 is disposed on the first channel 106, the communicating portion between the second interface 112 and the first channel 106 is the second interface 112, and the first flow regulating device 109 can be disposed at the second interface 112. It can be understood that, when the second interface 112 is disposed between the first channel 106 and the external heat source 30, there is a second communicating portion 117 between the second interface 112 and the first channel 106, and the first flow regulating device 109 can be disposed at the second communicating portion 117.

[0080] 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 flowing from the first interface 111 into the external heat source 30, and the regulation here can include gradually increasing or decreasing, and can also include opening and closing.

[0081] In some embodiments of the present specification, the first flow regulating device 109 may be disposed at the connecting portion between the first interface 111 and the second channel 107. Figure 6 As shown, when the first interface 111 is disposed on the second channel 107, the connecting portion between the first interface 111 and the second channel 107 is the first interface 111, and the first flow regulating device 109 can be disposed at the first interface 111. It can be understood that when the first interface 111 is disposed between the second channel 107 and the external heat source 30, there is a first connecting portion 116 between the first interface 111 and the second channel 107, and the first flow regulating device 109 can be disposed at the first connecting portion 116.

[0082] In this embodiment, the first flow regulating device 109 may be a three-way flow regulating valve 190. The three-way flow regulating valve 190 may regulate the flow of water in the second channel 107 flowing from the first interface 111 into the external heat source 30, and the regulation here may include gradually increasing or decreasing, or may only include opening and closing.

[0083] In some embodiments of the present specification, the first flow regulating device 109 may be disposed at the connecting portion between the second interface 112 and the second channel 107. Figure 7 As shown, when the second interface 112 is disposed on the second channel 107, the communicating portion between the second interface 112 and the second channel 107 is the second interface 112, and the first flow regulating device 109 can be disposed at the second interface 112. It can be understood that when the second interface 112 is disposed between the second channel 107 and the external heat source 30, there is a second communicating portion 117 between the second interface 112 and the second channel 107, and the first flow regulating device 109 can be disposed at the second communicating portion 117.

[0084] 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 second channel 107 flowing from the first interface 111 into the external heat source 30, and the regulation here can include gradually increasing or decreasing, and can also include opening and closing.

[0085] like Figure 8 As shown, in some embodiments of the present specification, the first flow regulating device 109 may include a first valve 191 and a second valve 192. The first valve 191 may be disposed between the first interface 111 and the second interface 112, and the second valve 192 may be disposed between the first interface 111 and the external heat source 30. It is understood that the second valve 192 may also be disposed between the second interface 112 and the external heat source 30. By adjusting the first valve 191 and the second valve 192, the water flow rate flowing from the first channel 106 or the second channel 107 into the external heat source 30 and the water flow rate flowing directly back to the water inlet of the first heat exchanger 101 may be adjusted.

[0086] like Fig. 9 As shown, in some embodiments of the present specification, the first flow regulating device 109 may include a third valve 193. Fig. 9 As shown, the third valve 193 can be disposed between the first interface 111 and the external heat source 30. It is understandable that the third valve can also be disposed between the second interface 112 and the external heat source 30. By adjusting 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 adjusted.

[0087] In this embodiment, the first valve 191, the second valve 192 and the third valve 193 may be flow regulating valves. The flow regulating valves may regulate the water flow, and the regulation may include gradually increasing or decreasing the flow, or may only include opening and closing.

[0088] Please refer to Fig.10 In some embodiments of the present specification, the gas water heater 10 may further include a second heat exchanger 103. The second heat exchanger 103 has a first flow channel 131 and a second flow channel 132 that are isolated from each other. The inlet of the first flow channel 131 can be communicated with the first channel 106 so that the water in the first channel 106 can flow into the inlet of the first flow channel 131. The outlet of the first flow channel 131 can be communicated with the second channel 107 so that the water flowing out of the outlet of the first flow channel 131 can flow into the second channel 107. The second flow channel 132 can be communicated with the domestic water device 40 for circulating domestic water. The water flowing through the first flow channel 131 and the water flowing through the second flow channel 132 can perform heat exchange. By providing the second heat exchanger 103, the gas water heater 10 can heat domestic water to meet the user's hot water needs.

[0089] like Fig.10 As shown, in some embodiments of the present specification, the gas water heater 10 may further include a second flow regulating device 115. The second flow regulating device 115 is used to divert the water flowing into the first channel 106 to the heating water outlet 104 and / or the entrance of the first flow channel 131. The second flow regulating device 115 can adjust the flow of the water flowing into the first channel 106 to the heating water outlet 104 and / or the first flow channel 131, and the adjustment here may include gradually increasing or decreasing, and may also include opening and closing.

[0090] exist Fig.10 In the illustrated embodiment, the second flow regulating device 115 may be disposed on the first channel 106 , and the first interface 111 and the second interface 112 may be disposed on the second channel 107 .

[0091] It can be understood that in some embodiments of the present specification, the second flow regulating device 115 can be set on the second channel 107, the first interface 111 and the second interface 112 can be set on the second channel 107, and the second flow regulating device 115 can be located upstream of the first interface 111.

[0092] In some embodiments of the present specification, the second flow regulating device 115 may be disposed on the first channel 106 , the first interface 111 and the second interface 112 may be disposed on the first channel 106 , and the second flow regulating device 115 may be located downstream of the second interface 112 .

[0093] In some embodiments of the present specification, the second flow regulating device 115 may be disposed on the second channel 107 , and the first interface 111 and the second interface 112 may be disposed on the first channel 106 .

[0094] exist Fig.10 In the illustrated embodiment, the outlet of the first flow channel 131 and the second channel 107 have a third connecting portion 118 located on the second channel 107. The first interface 111 and the second interface 112 may be disposed on the second channel 107 and located downstream of the third connecting portion 118. Fig.10 As shown, the pump 108 is disposed between the third connecting portion 118 and the first interface 111. It is understandable that the pump 108 may also be disposed at the connecting portion, or between the second interface 112 and the water inlet of the first heat exchanger 101.

[0095] The embodiments of this specification also provide a heating system. Fig.11 FIG. 2 shows a schematic diagram of the structure of a heating system in an embodiment of the present specification. Fig.11 As shown, the heating system 1 may include the gas water heater 10 in any of the above embodiments. The heating system 1 may 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 connection port 301 connected to the first interface 111, and a second connection port 302 connected to the second interface 112. The water flowing out of the first interface 111 can flow into the first connection port 301. After being heated by the external heat source 30, it flows to the second interface 112 through the second connection port 302.

[0096] The heating system 1 in the embodiment of the present specification comprises 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 refluxed water of the indoor heating system 120 into the first heat exchanger 101 via a second channel 107 arranged between the water inlet of the first heat exchanger 101 and the heating water inlet, so as to supply 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 arranging 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 to flow into the external heat source 30 via the first interface 111 and then flow back to the first channel 106 or the second channel 107 via the second interface 112, so that 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.

[0097] like Fig.11 As shown, in some embodiments of the present 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 2, and the second water flow path 332 is used to circulate municipal heating water. The water flowing through the first water flow path 331 and the water flowing through the second water flow path 332 are heat exchanged. By setting the third heat exchanger 303, the municipal heating 2 can be used to heat the heating water. At the same time, compared with the prior art of directly connecting the municipal heating 2 with the gas water heater 10, in this embodiment, by setting the third heat exchanger 303, the heat of the municipal heating water can be used in a heat exchange manner, thereby avoiding the problem of municipal heating water directly entering the heat exchanger and waterway inside the gas water heater and causing the waterway to be dirty and blocked, thereby extending the service life of the gas water heater and improving the user experience.

[0098] In some embodiments of the present specification, the third heat exchanger 303 is disposed at a predetermined position indoors. By disposing the third heat exchanger 303 at a predetermined position indoors, the adjustment, installation, maintenance and use of the third heat exchanger 303 can be facilitated.

[0099] The present description also provides a heating system control method in an embodiment, and the heating system control method is based on the heating system in any of the above embodiments. Fig.12 FIG. 1 is a flow chart showing a method for controlling a heating system in accordance with an embodiment of the present specification. Specifically, Fig.12 As shown, a heating system control method provided in one embodiment of the present specification may include the following steps.

[0100] Step 1201, obtaining the working status of the external heat source.

[0101] The method in this embodiment can be applied to a heating system. Specifically, the method in this 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 a gas water heater.

[0102] The controller can obtain the working status of the external heat source.

[0103] In one embodiment, the working state of the external heat source may include an on state and an off state. In one embodiment, when the external heat source is turned on or off, the controller may receive a corresponding signal. The controller may determine whether the external heat source is working according to the received signal.

[0104] In another embodiment, the working state of the external heat source may 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 increases. The unavailable state means that the external heat source can absorb heat flowing into the external heat source, so that the temperature of the heating water decreases. In one embodiment, the controller can compare the water temperature flowing into the external heat source with the water temperature flowing out of the external heat source to obtain the working state of the external heat source.

[0105] In yet another embodiment, the operating state of the external heat source may include temperature data of a heat exchange medium in the external heat source for exchanging heat with the heating water. In one embodiment, the controller may compare the temperature of the heating water with the temperature data of the heat exchange medium in the external heat source to obtain the operating state of the external heat source.

[0106] Step 1202: Control the first flow regulating device to regulate the flow of water flowing from the first interface into the external heat source according to the working state of the external heat source.

[0107] After obtaining the working state of the external heat source, the controller can control the first flow regulating device to adjust the water flow rate flowing 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 regulating device to adjust the water flow rate flowing from the first interface into the external heat source can refer to gradually adjusting the water flow rate, and can also refer to turning the water flow on and off.

[0108] The method in the above embodiment controls the first flow regulating device to adjust the flow into the external heat source according to the working state of the external heat source, so that the indoor heating system can achieve indoor temperature control and intelligent multi-energy switching, and can meet the user's heating needs in an energy-saving and comfortable manner.

[0109] In some embodiments of the present specification, the working state of the external heat source may include an on state and an off state. Accordingly, according to the working state of the external heat source, controlling the first flow regulating device to regulate the water flow rate flowing from the first interface into the external heat source may include: if the external heat source is in an on state, controlling the first flow regulating device so that at least part of the water flows from the first interface into the external heat source; if the external heat source is in an off state, controlling the first flow regulating device so that the water does not flow from the first interface into the external heat source. In this embodiment, when the external heat source is turned on, at least part of the water flows from the first interface into the external heat source for heating. The external heat source can be used to heat the heating water, so that the indoor heating system can use the heat of the external heat source. When the external heat source is not turned on, the water does not flow from the first interface into the external heat source, so as to avoid the heating water flowing into the external heat source and reducing the temperature.

[0110] In some embodiments of the present specification, the gas water heater may include 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 water temperature flowing into the first interface. The second temperature sensor is located downstream of the second interface and can be used to detect the water temperature flowing out of the second interface. The control method may also include: obtaining a first temperature detected by the first temperature sensor and a second temperature detected by the second temperature sensor; when the external heat source is turned on, 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 turned on, the heating condition of the heating water flowing into the first interface by the external heat source can be further determined according to the water temperature flowing into the first interface and the water temperature flowing out of the second interface, and then the water flow rate flowing into the external heat source can be adjusted according to the heating condition, which can further improve the accuracy of water temperature regulation.

[0111] In some embodiments of the present specification, controlling the first flow regulating device to regulate the water flow from the first interface to the external heat source according to the first temperature and the second temperature may include: when the first temperature is less than the second temperature, controlling the first flow regulating device so that the water flow from the first interface to the external heat source increases; when the first temperature is not less than the second temperature, controlling the first flow regulating device so that the water flow from the first interface to the external heat source decreases. In this embodiment, when the first temperature is less than the second temperature, it indicates that the external heat source can heat the heating water. At this time, the first channel or the second channel can be connected to the external heat source or the flow of the first channel or the second channel flowing from the first interface to the external heat source can be increased. When the first temperature is not less than the second temperature, it indicates that the external heat source cannot heat the heating water. At this time, the first channel or the second channel can be closed to the external heat source or the flow of the first channel or the second channel flowing from the first interface to the external heat source can be reduced until the first temperature is less than or equal to the second temperature. In the above manner, flow regulation can be performed according to the water temperature flowing into the first interface and the water temperature flowing out of the second interface.

[0112] In some embodiments of the present specification, the working state of the external heat source may include an available state and an unavailable state. Accordingly, according to the 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 may include: if the external heat source is in an available state, controlling the first flow regulating device so that at least part of the water flows from the first interface to the external heat source; if the external heat source is in an unavailable state, controlling the first flow regulating device so that the water does not flow 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 flows from the first interface to the external heat source for heating, and the external heat source can be used to heat the heating water, so that the indoor heating system can use the heat of the external heat source. When the external heat source cannot heat the heating water, the water does not flow 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.

[0113] In some embodiments of the present specification, the heating system control method may further include: when the external heat source is turned on, if the first temperature is less than the second temperature, determining that the external heat source is in an available state; when the external heat source is turned on, if the first temperature is not less than the second temperature, determining that the external heat source is in an unavailable state. In this embodiment, whether the external heat source is available can be determined based on the first temperature and the second temperature.

[0114] In some embodiments of the present specification, the working state of the external heat source may include the temperature data of the heat exchange medium in the external heat source used for heat exchange with the heating water. The controller may 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, according to the working state of the external heat source, controlling the first flow regulating device to adjust the water flow rate flowing into the external heat source from the first interface may include: 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 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 of the external heat source is higher than the temperature of the heating water upstream of the first interface, the water flow rate flowing into the external heat source from the first interface may 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 rate.

[0115] In some embodiments of the present specification, the control method may also include: obtaining the heating water outlet set temperature of the gas water heater and the second temperature detected by the second temperature sensor; controlling the burner to determine whether to start working based on the heating water outlet set temperature and the second temperature.

[0116] In this embodiment, the controller can also obtain the heating water outlet set temperature of the gas water heater 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 determine whether to start working according to the heating water outlet set temperature and the second temperature, that is, determine whether to turn on 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 needs of the user.

[0117] In some embodiments of this specification, controlling the burner to determine whether to start working according to the heating water outlet set temperature and the second temperature may include: when the second temperature is lower than the heating water outlet set temperature, controlling the burner to heat the first heat exchanger; when the second temperature is not lower than the heating water outlet set temperature, controlling the burner to stop heating. 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 user's heating needs. 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 heating water temperature being too high.

[0118] In some embodiments of the present specification, the heating system control method may further include: obtaining the heating water outlet set temperature of the gas water heater and the second temperature detected by the second temperature sensor; 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, controlling the first flow regulating device to reduce the water flow rate flowing from the first interface into the external heat source.

[0119] In this embodiment, when the second temperature is too high, it means that the external heat source supplies too much heat to the heating water. The first flow regulating device can be controlled to reduce the water flow rate flowing into the external heat source from the first interface, thereby lowering the heating water temperature downstream of the second interface, thereby avoiding the temperature of the heating water outlet being too high.

[0120] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. For details, please refer to the description of the above-mentioned related processing related embodiments, and no further description is given here.

[0121] The above is a description of a specific embodiment of the specification. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the embodiments and still achieve the desired results. In addition, the processes depicted in the drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0122] It should be understood that the above description is for illustration and not for limitation. Many embodiments and many applications beyond the examples provided will be apparent to those skilled in the art upon reading the above description. Therefore, the scope of this specification should not be determined with reference to the above description, but should be determined with reference to the preceding claims and the full scope of equivalents to which these claims belong.

[0123] The above description is only the preferred embodiment of this specification and is not intended to limit this specification. For those skilled in the art, the embodiments of this specification may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this specification shall be included in the protection scope of this specification.

Claims

1. A gas water heater, characterized in that: The gas water heater comprises: a first heat exchanger; a burner, the burner being used to heat the first heat exchanger; A heating water outlet and a heating water return port, wherein the heating water outlet is used to input water into the indoor heating system, and the heating water return port is used to receive water returned from the indoor heating system; A first channel is provided between the water outlet of the first heat exchanger and the heating water outlet, and a second channel is provided between the water inlet of the first heat exchanger and the heating water return port; a first interface and a second interface in communication with the first channel or the second channel, the first interface being located upstream of the second interface, the first interface being used to lead 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 used to allow water heated by the external heat source to flow into the first channel or the second channel; A pump disposed on the first channel or the second channel, the pump being capable of driving the water flowing from the heating water return port into the second channel to flow through the first heat exchanger and then flow from the first channel to the heating water outlet; A first flow regulating device, wherein the first flow regulating device is used to regulate the water flow to the first interface.

2. The gas water heater according to claim 1, characterized in that: The gas water heater further comprises a first port and a second port, wherein the first port is in communication with the first interface via a pipeline; and the second port is in communication with the second interface via a pipeline.

3. The gas water heater according to claim 2, characterized in that: The gas water heater comprises a shell, and the heating water outlet, the heating water return port, the first port and the second port are located outside the shell.

4. The gas water heater according to claim 1, characterized in that: The pump is arranged upstream of the first interface or downstream of the second interface.

5. The gas water heater according to claim 1, characterized in that: The gas water heater also includes a second heat exchanger, which has a first flow channel and a second flow channel isolated from each other, the inlet of the first flow channel can be connected to the first channel so that water in the first channel can flow into the inlet of the first flow channel, the outlet of the first flow channel can be connected to the second channel so that water flowing out of the outlet of the first flow channel can flow into the second channel, the second flow channel is used to circulate domestic water, and water flowing through the first flow channel and water flowing through the second flow channel can undergo heat exchange.

6. The gas water heater according to claim 5, characterized in that: The gas water heater further comprises a second flow regulating device, which is used to divert water flowing into the first channel to the heating water outlet and / or the inlet of the first flow channel.

7. The gas water heater according to claim 6, characterized in that: 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 heater according to claim 5, characterized in that: The outlet of the first flow channel and the second channel have a connecting portion located on the second channel; The first interface and the second interface are arranged on the second channel and are located downstream of the connecting part, and the pump is arranged at the connecting part or between the connecting part and the first interface or between the second interface and the water inlet of the first heat exchanger.

9. The gas water heater according to claim 1, characterized in that: The gas water heater 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 heater according to claim 1, characterized in that: The first flow regulating device is arranged at the connecting part between the first interface and the first channel or the second channel, or the first flow regulating device is arranged at the connecting 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 heater according to claim 1, characterized in that: The first flow regulating device includes a first valve and a second valve, wherein the first valve is arranged between the first interface and the second interface, and the second valve is arranged between the first interface and an external heat source or between the second interface and an external heat source.

12. The gas water heater according to claim 1, characterized in that: The first flow regulating device includes a third valve, and the third valve is arranged between the first interface and the external heat source or between the second interface and the external heat source.

13. A heating system, characterized in that: The heating system comprises the gas water heater according to any one of claims 1 to 12; The heating system also includes: An indoor heating system, wherein the inlet of the indoor heating system is connected to the heating water outlet, and the outlet of the indoor heating system is connected to the heating water return port; An external heat source has a first connection port connected to the first interface, and a second connection port connected to the second interface. Water flowing out of the first interface can flow into the first connection port, be heated by the external heat source, and then flow to the second interface through the second connection port.

14. The heating system according to claim 13, characterized in that: The external heat source includes a third heat exchanger, and the third heat exchanger includes a first water flow path and a second water flow path. The first connection port and the second connection port 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 circulate municipal heating water. Water flowing through the first water flow path and water flowing through the second water flow path undergo heat exchange.

15. The heating system according to claim 14, characterized in that: The third heat exchanger is arranged at a predetermined position indoors.

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