Water flow pressure maintaining starting device for gas water heater

Abstract

The present invention relates to the technical field of waterway accessories, and provides a water flow pressure maintaining starting device for a gas water heater, comprising a pressure maintaining starting device main body configured to be connected to a waterway and a water passing member arranged on the pressure maintaining starting device main body. The pressure maintaining starting device main body is provided with an input end and an output end, the water passing member is separately communicated with the input end and the output end of the pressure maintaining starting device main body, the water passing member is flexible, and the water passing member expands as water pressure increases and contracts as the water pressure decreases. The pressure maintaining starting device main body is provided with the water passing member deforming along with liquid pressure; one end of the waterway is provided with a water pump; the water flow pressure maintaining starting device is arranged between the water pump and a water outlet control valve; when the water outlet control valve is closed and the water pump continues to pump water to the water passing member, since the water outlet control valve is closed, water cannot flow out and is stored on the flexible water passing member, so that the flexible water passing member expands and deforms; and when the water outlet control valve is opened again, the flexible water passing member releases pressure to push liquid to flow to the water outlet control valve, so as to deliver a portion of water flow to a water outlet end of the waterway.

Description

A gas water heater pressure-maintaining start device Technical Field

[0001] This invention relates to the field of water system accessories technology, specifically to a water flow pressure-maintaining start device for a gas water heater. Background Technology

[0002] Current gas water heaters are battery-powered and consist of a burner, heat exchanger, showerhead, storage tank, and water pump. The pump draws liquid from the storage tank to the heat exchanger, where the burner heats the liquid, turning it into hot water. When the showerhead is turned on, the water pump stops. When the showerhead is turned on again, the pump does not automatically restart; the user must activate the pump start switch again. This is cumbersome. Current gas water heaters cannot achieve automatic pumping like in household water heaters because the pump inlet is connected to the storage tank, not the mains pipe. When the showerhead is turned on again, the storage tank cannot actively pump water unless the user activates the pump start switch. This lack of water flow results in no signal from the water flow sensor, preventing the pump from receiving a start command. Summary of the Invention

[0003] This invention proposes a water flow pressure-maintaining starting device for a gas water heater. The main body of the pressure-maintaining starting device is equipped with a water-passing component that deforms with liquid pressure. A water pump is provided at one end of the water circuit, and the water flow pressure-maintaining starting device is located between the water pump and the outlet control valve. An outlet control valve is provided at the other end of the water circuit. When the outlet control valve is closed, but the water pump continues to pump water to the water-passing component, the water cannot flow out due to the closed outlet control valve and is stored on the flexible water-passing component, causing the flexible water-passing component to expand and deform, maintaining the corresponding water pressure. When the outlet control valve is opened again, the flexible water-passing component releases the pressure, pushing the liquid to flow towards the outlet control valve, thereby realizing the delivery of a section of water flow towards the outlet end of the water circuit.

[0004] A gas water heater pressure-maintaining starting device designed for this purpose includes a pressure-maintaining starting device body for connecting to a water circuit and a water-conducting component disposed on the pressure-maintaining starting device body. The pressure-maintaining starting device body is provided with an input end and an output end. The water-conducting component is connected to the input end and the output end of the pressure-maintaining starting device body respectively. The water-conducting component is a flexible body so that it expands with the increase of water pressure and contracts with the decrease of water pressure.

[0005] The water-passing component is a flexible water pipe, and the material of the water-passing component is rubber, plastic or latex. The water-passing component is provided with a support component to prevent the water-passing component from twisting due to repeated expansion and deformation. The support component is provided with a cavity and a water passage hole that communicate with the inner cavity of the water-passing component. The cavity runs through the support component from top to bottom to prevent the water-passing component from becoming blocked after expansion. The water passage hole is located on the side of the support component and communicates with the cavity.

[0006] The main body of the pressure-holding start device is equipped with a one-way valve for allowing liquid to flow unidirectionally from the input end to the output end.

[0007] The main body also includes a shell, which has a cavity for installing a water-conducting component. A gap is left between the inner side of the cavity and the outer side of the water-conducting component to allow the water-conducting component to expand and deform.

[0008] The outer shell surface is provided with vent holes that connect the cavity to the outside air. When the water-conducting component is deformed, the cavity of the outer shell maintains the internal and external air pressure balance through the vent holes.

[0009] Both ends of the outer shell are provided with sealing and positioning grooves, and the end of the water-conducting component is provided with a sealing flange that is limited on the sealing and positioning groove, so that the water-conducting component is positioned and installed on the outer shell.

[0010] The outer shell has a first connector at one end, which is sleeved on the outer side of the outer end of the outer shell. The first connector has a water outlet channel forming an output end. One end of the water inlet is sealed and flanged against the inner side of the first connector, so that the outer shell, the water inlet and the first connector form a first sealed connection.

[0011] The other end of the outer shell is provided with a second connector, which is sleeved on the outer side of the end of the outer shell. The second connector is provided with a water inlet channel forming an input end. The other end of the water-conducting component is sealed and flanged against the inner side of the second connector, so that a second sealed connection is formed between the outer shell, the water-conducting component and the second connector.

[0012] The second connector has a mounting cavity for installing the second check valve.

[0013] The outer casing includes a first casing and a second casing, both of which are provided with connecting parts for connecting inlet and outlet water connectors.

[0014] A positioning connection part is provided between the first housing and the second housing. The first housing and the second housing are connected and assembled into an outer shell for encapsulating the water passage component through the positioning connection part.

[0015] The pressure-holding start device is mounted on the inlet pipe of the portable gas water heater.

[0016] The beneficial technical effects of the present invention are as follows:

[0017] The main body of the pressure-holding starting device is equipped with a water-passing component that deforms with the liquid pressure. A water pump is installed at one end of the water circuit. The water flow pressure-holding starting device is located between the water pump and the outlet control valve. An outlet control valve is installed at the other end of the water circuit. When the outlet control valve is closed, but the water pump continues to pump water to the water-passing component, the water cannot flow out due to the closed outlet control valve and is stored on the flexible water-passing component, causing the flexible water-passing component to expand and deform. When the outlet control valve is opened again, the flexible water-passing component releases the pressure and pushes the liquid to the outlet control valve, so as to realize the delivery of a section of water to the outlet end of the water circuit.

[0018] Applying the aforementioned water flow pressure-maintaining start device to a gas water heater allows the user to automatically pump water without manually operating the pump switch when the showerhead is turned on again, even when the water pump is off. The user only needs to operate the pump switch on the first use, making it convenient. The water-conducting component expands and deforms when the showerhead is turned off for the first time. Because the pump runs for a certain period (which can be understood as a delayed shutdown relative to the showerhead), it actively delivers liquid to the water-conducting component before shutting off. Since the showerhead cannot dispense water, and the inlet of the water-conducting component, which acts as a one-way valve, also cannot dispense water, the water is stored in the component, causing it to expand and deform. When the showerhead is turned on again, the pressure in the component is released, pushing the liquid towards the water flow sensor, thus triggering the sensor. Attached Figure Description

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0020] Figure 1 is a schematic diagram of the structure of a water flow pressure maintaining and starting device installed in a water circuit according to an embodiment of the present invention.

[0021] Figure 2 is a schematic diagram of the water-passing component under normal pressure according to an embodiment of the present invention.

[0022] Figure 3 is a schematic diagram of the structure of the water flow pressure maintaining and starting device according to an embodiment of the present invention, in which the liquid is stored in the water passage component when the water outlet is closed.

[0023] Figure 4 is a schematic diagram of the structure of a water-passing component in an expanded state according to an embodiment of the present invention.

[0024] Figure 5 is a schematic diagram of the assembly and disassembly structure of a water flow pressure-maintaining start-up device according to an embodiment of the present invention.

[0025] Figure 6 is a three-dimensional structural schematic diagram of a water flow pressure-maintaining start-up device according to an embodiment of the present invention. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. In order to make the above-mentioned objects, features and advantages of this application more apparent and understandable, many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0027] Referring to Figures 1-6, a pressure-maintaining start device for a gas water heater includes a pressure-maintaining start device body 1 for connecting to a water circuit and a water-conducting component 4 disposed on the pressure-maintaining start device body 1. The pressure-maintaining start device body 1 is provided with an input end 2 and an output end 3. The water-conducting component 4 is connected to the input end 2 and the output end 3 of the pressure-maintaining start device body 1 respectively. The water-conducting component 4 is a flexible body so that it expands with the increase of water pressure and contracts with the decrease of water pressure.

[0028] The main body 1 of the pressure-holding starting device is equipped with a water-passing component 4 that deforms with the liquid pressure. A water pump is provided at one end of the water circuit. The water flow pressure-holding starting device is located between the water pump and the outlet control valve. An outlet control valve is provided at the other end of the water circuit. When the outlet control valve is closed, and the water pump continues to pump water to the water-passing component 4, the water cannot flow out and is stored on the flexible water-passing component 4 because the outlet control valve is closed. This causes the flexible water-passing component 4 to expand and deform. When the outlet control valve is opened again, the flexible water-passing component 4 releases pressure and pushes the liquid to the outlet control valve, so as to realize the delivery of a section of water to the outlet end of the water circuit.

[0029] The water-passing component 4 is a flexible water pipe, and the material of the water-passing component 4 is rubber, plastic or latex. The water-passing component 4 is provided with a support component 25 to prevent the water-passing component 4 from twisting due to repeated expansion and deformation. The support component 25 is provided with a cavity 26 and a water passage hole 27 that communicate with the inner cavity of the water-passing component 4. The cavity 26 passes through the support component 25 from top to bottom to prevent the water-passing component 4 from becoming blocked after expansion. The water passage hole 27 is located on the side of the support component 25 and communicates with the cavity 26.

[0030] In this embodiment, the support member 25 is inserted into the water passage member 4. When the water passage member 4 expands, the liquid can still be transported forward through the cavity 26 of the support member 25, preventing the water passage member 4 from becoming blocked after expansion.

[0031] The main body 1 of the pressure holding and starting device is equipped with a one-way valve 12 for allowing liquid to flow unidirectionally from the input end 2 to the output end 3.

[0032] In this embodiment, the one-way valve 12 is provided with a conical water passage with two elastically deformable blocks. The inner diameter of the water passage gradually decreases from the inlet end to the outlet end, so the liquid can only flow in one direction and cannot flow back. When the liquid flows from the inlet end to the outlet end, the liquid expands the two elastically deformable blocks. When the liquid wants to flow back, the two elastic blocks are relatively closed, so the second one-way valve 12 does not open and the liquid cannot flow back.

[0033] Alternatively, the one-way valve 12 is equipped with a flexible piston. When water flows through, the water pushes open the piston, and when the liquid flows back, it is blocked by the flexible piston, thus achieving one-way flow of the liquid. This allows the water-passing component 4 to maintain the corresponding water pressure through expansion and deformation when in a water-storage state.

[0034] The main body 1 also includes a shell 7, which has a cavity 8 for installing the water-conducting component 4. A gap is left between the inner side of the cavity 8 of the shell 7 and the outer side of the water-conducting component 4 to allow the water-conducting component 4 to expand and deform.

[0035] The outer shell 7 has a vent 9 on its surface that connects the cavity 8 to the outside air. When the water-conducting component 4 is deformed, the cavity 8 of the outer shell 7 maintains the internal and external air pressure balance through the vent 9.

[0036] In this embodiment, the water-passing component 4 has an expansion water storage state and a water-passing state. When the water-passing component 4 is in the expansion water storage state, when the water outlet is opened, the water-passing component 4 releases pressure, and outside air enters the cavity 8 through the vent 9, causing the water-passing component 4 to deform and reset, so as to push the liquid stored in the water-passing component 4 to flow to the water flow sensor 5.

[0037] In this embodiment, when the water-passing component 4 changes from the water-passing state to the expansion and water-storage state, the water-passing component 4 expands and forces out the air in the cavity 8, and the air is output to the outside air through the vent hole 9.

[0038] Both ends of the outer shell 7 are provided with sealing positioning grooves 10, and the end of the water-conducting component 4 is provided with a sealing flange 11 that is limited on the sealing positioning groove 10, so that the water-conducting component 4 is positioned and installed on the outer shell 7.

[0039] The outer shell 7 is provided with a first connector 13 at one end. The first connector 13 is sleeved on the outer side of the end of the outer shell 7. The first connector 13 is provided with a water outlet channel 15 forming an output end 3. The sealing flange 11 of one end of the water-conducting component 4 abuts against the inner side of the first connector 13 so that a first sealing connection is formed between the outer shell 7, the water-conducting component 4 and the first connector 13, so as to avoid liquid leakage between the outer shell 7, the water-conducting component 4 and the first connector 13.

[0040] The other end of the outer shell 7 is provided with a second connector 14. The second connector 14 is sleeved on the outer side of the end of the outer shell 7. The second connector 14 is provided with a water inlet channel 16 forming the input end 2. The sealing flange 11 of the other end of the water-conducting component 4 abuts against the inner side of the second connector 14 so that a second sealing connection is formed between the outer shell 7, the water-conducting component 4 and the second connector 14, so as to avoid liquid leakage between the outer shell 7, the water-conducting component 4 and the second connector 14.

[0041] The second connector 14 has a mounting cavity 20 for installing the second check valve 12.

[0042] The outer casing 7 includes a first casing 17 and a second casing 18, both of which are provided with a connecting part 19 for connecting the inlet and outlet water connectors.

[0043] In this embodiment, both the first housing 17 and the second housing 18 are provided with external threads at their ends, and the first connector 13 and the second connector 14 are provided with internal threads.

[0044] A positioning connection part 21 is provided between the first housing 17 and the second housing 18. The first housing 17 and the second housing 18 are connected and assembled into the outer shell 7 of the encapsulated water-passing component 4 through the positioning connection part 21.

[0045] The main body 1 of the pressure-holding start device is installed on the water inlet pipe of the portable gas water heater.

[0046] In this embodiment, the outer shell 7 is composed of two parts that can be joined together, which facilitates the installation of the water-conducting component 4 inside the outer shell 7.

[0047] In this embodiment, the positioning connection part 21 includes a positioning post disposed on the inner edge of the first housing 17 and a positioning hole disposed on the second housing 18, wherein the positioning post is inserted into the positioning hole.

[0048] In this embodiment, the first housing 17 and the second housing 18 have a semi-circular arc structure, and the first housing 17 and the second housing 18 can be fixed by ultrasonic welding.

[0049] In this embodiment, the output terminal 3 is connected to the heat exchanger of the gas water heater, and the input terminal 2 is connected to the liquid outlet of the water pump.

[0050] Applying the aforementioned water flow pressure-maintaining start device to a gas water heater allows the user to automatically pump water without manually operating the pump switch when the showerhead is turned on again, even when the water pump is off. The user only needs to operate the pump switch on the first use, making it convenient. The water-conducting component 4 expands and deforms when the showerhead is turned off for the first time. Since the pump operates for a certain period (which can be understood as a delayed shutdown relative to the showerhead), it actively delivers liquid to the water-conducting component 4 before shutting off. Because the showerhead cannot dispense water, and the one-way valve 12 also prevents water from flowing from the input end 2 of the water-conducting component 4, water is stored in the component 4, causing it to expand and deform. When the showerhead is turned on again, the pressure in the water-conducting component 4 is released, pushing the liquid towards the water flow sensor 5, thus triggering the sensor.

[0051] The inlet end of the water pump is connected to the water tank 6.

[0052] A method for controlling the use of a portable gas water heater as described above includes the following steps:

[0053] Step 1: Operate the start switch of the gas water heater. The water pump starts for the first time, the shower head is turned on for the first time, and the liquid in the storage tank enters the water inlet 4 and flows through the water flow sensor 5.

[0054] Step 2: Turn off the shower head. The water flow sensor 5 does not detect a water flow signal. The water pump shuts off after a delay relative to the shower head. The liquid in the water tank 6 is drawn into the water inlet 4. The water inlet 4 is in an expansion, water storage and pressure holding state.

[0055] Step 3: When the shower head is turned on for the second time, the water supply component 4 releases pressure and pushes the liquid flow to the water flow sensor 5, triggering the water flow sensor 5 to output an electrical signal to start the water pump, thus realizing the operation-free start switch outputting an electrical signal to start the water pump.

[0056] In step one, the water flow sensor 5 detects the water flow signal and feeds it back to the main control program. The gas valve opens and supplies gas to the burner. The ignition needle ignites the gas. Within the corresponding time period, the ignition needle thermocouple detects the flame, and the gas water heater operates normally.

[0057] In step two, when the shower head is turned off and the water flow sensor 5 does not detect a water flow signal, the gas valve is closed.

[0058] The gas water heater includes a burner, a heat exchanger, a shower head, a water storage tank 6, and a water pump;

[0059] The inlet of the water pump is connected to the water storage tank 6, and the outlet of the water pump is connected to the input end 2 of the main body 1; the output end 3 of the main body 1 is connected to the heat exchanger and the shower head in sequence to form a hot water output pipeline.

[0060] The water pump's shutdown time is longer than the shower head's shutdown time. The water pump draws liquid from the storage tank through the water inlet 4, the water flow sensor 5, and the heat exchanger, where the liquid is heated and finally output from the shower head.

[0061] When the shower head is turned off, the water pump is delayed and continues to draw liquid into the water inlet 4, which is in an expanded water storage state. When the shower head is turned on while the water inlet 4 is in an expanded water storage state, the water inlet 4 releases pressure and pushes the liquid to the water flow sensor 5, thereby triggering the water flow sensor 5 to output an electrical signal to start the water pump.

[0062] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A gas water heater pressure-maintaining start-up device, characterized in that: It includes a pressure-holding start device body (1) for connecting to a water circuit and a water-passing component (4) provided on the pressure-holding start device body (1). The pressure-holding start device body (1) is provided with an input end (2) and an output end (3). The water-passing component (4) is connected to the input end (2) and the output end (3) of the pressure-holding start device body (1) respectively. The water-passing component (4) is a flexible body so that the water-passing component (4) expands with the increase of water pressure and contracts with the decrease of water pressure.

2. The water flow pressure-maintaining start-up device according to claim 1, characterized in that: The water-conducting component (4) is a flexible water pipe, and the material of the water-conducting component (4) is rubber, plastic or latex.

3. The water flow pressure-maintaining start-up device according to claim 1, characterized in that: The water-passing component (4) is provided with a support component (25) to prevent the water-passing component (4) from twisting due to repeated expansion and deformation. The support component (25) is provided with a cavity (26) and a water passage hole (27) that communicate with the inner cavity of the water-passing component (4). The cavity (26) passes through the support component (25) from top to bottom to prevent the water-passing component (4) from becoming blocked after expansion. The water passage hole (27) is located on the side of the support component (25) and communicates with the cavity (26).

4. The water flow pressure-maintaining start-up device according to claim 1, characterized in that: The main body (1) of the pressure holding and starting device is provided with a one-way valve (12) for allowing liquid to flow unidirectionally from the input end (2) to the output end (3).

5. The water flow pressure-maintaining start-up device according to claim 1, characterized in that: The main body (1) also includes a shell (7), which has a cavity (8) for installing the water supply component (4). A gap is left between the inner side of the cavity (8) of the shell (7) and the outer side of the water supply component (4) to allow the water supply component (4) to expand and deform.

6. The water flow pressure-maintaining start-up device according to claim 5, characterized in that: The outer shell (7) has a vent (9) on its surface that connects the cavity (8) with the outside air. When the water supply component (4) is deformed, the cavity (8) of the outer shell (7) maintains the internal and external air pressure balance through the vent (9).

7. The water flow pressure-maintaining start-up device according to claim 5, characterized in that: Both ends of the outer shell (7) are provided with sealing positioning grooves (10), and the end of the water-conducting component (4) is provided with a sealing flange (11) that is limited on the sealing positioning groove (10) so that the water-conducting component (4) is positioned and installed on the outer shell (7).

8. The water flow pressure-maintaining start-up device according to claim 7, characterized in that: The outer shell (7) is provided with a first connector (13) at one end. The first connector (13) is sleeved on the outer side of the end of the outer shell (7). The first connector (13) is provided with a water outlet channel (15) forming an output end (3). The sealing flange (11) of one end of the water-conducting component (4) abuts against the inner side of the first connector (13) so that a first sealing connection is formed between the outer shell (7), the water-conducting component (4) and the first connector (13).

9. The water flow pressure-maintaining start-up device according to claim 7, characterized in that: The outer shell (7) is provided with a second connector (14) at the other end. The second connector (14) is sleeved on the outer side of the end of the outer shell (7). The second connector (14) is provided with a water inlet channel (16) forming an input end (2). The sealing flange (11) at the other end of the water-conducting component (4) abuts against the inner side of the second connector (14) so ​​that a second sealing connection is formed between the outer shell (7), the water-conducting component (4) and the second connector (14). The second connector (14) has a mounting cavity (20) for installing the second check valve (12).

10. The water flow pressure-maintaining start device according to claim 5, characterized in that: The outer shell (7) includes a first shell (17) and a second shell (18), and both the first shell (17) and the second shell (18) are provided with connecting parts (19) for connecting inlet and outlet water connectors. A positioning connection part (21) is provided between the first housing (17) and the second housing (18). The first housing (17) and the second housing (18) are connected and assembled into the outer shell (7) of the encapsulated water-passing component (4) through the positioning connection part (21). The main body (1) of the pressure-holding start device is installed on the water inlet pipe of the portable gas water heater (24).

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