Water flow pressure maintaining starting device of gas water heater

Abstract

The invention relates to the technical field of waterway accessories, and provides a gas water heater water flow pressure-maintaining starting device which comprises a pressure-maintaining starting device body used for being connected with a waterway and a water passing piece arranged on the pressure-maintaining starting device body, and the pressure-maintaining starting device body is provided with an input end and an output end. The water passing piece is communicated with the input end and the output end of the pressure maintaining starting device body, the water passing piece is a flexible body, and the water passing piece expands along with increase of water pressure and contracts along with reduction of the water pressure. The water flow pressure-maintaining starting device is arranged between the water pump and the water outlet control valve, when the water outlet control valve is closed and the water pump continues to pump water to the water through piece, due to the fact that the water outlet control valve is closed, water cannot flow out and is stored on the water through piece of the flexible body, and the water flow pressure-maintaining starting device is used for starting the water flow pressure-maintaining starting device. And when the water outlet control valve is opened again, the water passing piece of the flexible body releases pressure to push liquid to flow to the water outlet control valve, so that a section of water flow is conveyed to the water outlet end of the water path.

Description

Technical Field

[0001] The invention relates to the technical field of water channel accessories, and in particular to a water flow pressure-maintaining starting device for a gas water heater. Background Art

[0002] The existing gas water heater needs to be powered by a battery. It has a burner, a heat exchanger, a shower, a water tank and a water pump. The water pump runs to draw liquid from the water tank to the heat exchanger. The burner heats the heat exchanger, turning the liquid flowing through the heat exchanger into hot water. The shower is turned on for the user to bathe. When the shower is turned off, the water pump stops running. When the shower is turned on again, the water pump cannot start automatically. The user needs to operate the switch that triggers the water pump to start again before the water pump can start. The operation is troublesome. The existing gas water heater cannot realize the automatic pumping function like household water use, because the water inlet end of the gas water heater pump is connected to the water tank, not the tap water pipe. After the shower is turned on for the second time, when the user does not operate the switch that triggers the water pump to start, the water tank cannot actively deliver water, resulting in the failure to deliver water flow, which in turn causes the water flow sensor of the gas water heater to have no signal, and the water pump cannot obtain the start instruction. Summary of the invention

[0003] The present invention proposes a water flow pressure-maintaining starting device for a gas water heater, wherein a water-passing part that deforms with liquid pressure is provided on the main body of the pressure-maintaining starting device, a water pump is provided at one end of a water path, the water flow pressure-maintaining starting device is arranged between the water pump and a water outlet control valve, and a water outlet control valve is provided at the other end of the water path. When the water outlet control valve is closed, and the water pump continues to pump water to the water-passing part, water cannot flow out and is stored in the water-passing part of a flexible body due to the closure of the water outlet control valve, causing the water-passing part of the flexible body to expand and deform, and the water-passing part maintains a corresponding water pressure. When the water outlet control valve is opened again, the water-passing part of the flexible body releases pressure and pushes the liquid to flow toward the water outlet control valve, so as to realize the delivery of a section of water flow toward the water outlet end of the water path.

[0004] A water flow pressure-maintaining starting device for a gas water heater designed for this purpose comprises a pressure-maintaining starting device body for connecting to a water path and a water-passing piece arranged 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-passing piece is respectively connected to the input end and the output end of the pressure-maintaining starting device body. The water-passing piece is a flexible body so that the water-passing piece expands as the water pressure increases and contracts as the water pressure decreases.

[0005] The water-passing piece is a flexible water pipe, and the material of the water-passing piece is rubber, plastic or latex; a bracket is provided inside the water-passing piece to prevent the water-passing piece from twisting due to multiple expansion and deformation, and the bracket is provided with a cavity and a water hole that are connected to the inner cavity of the water-passing piece. The cavity passes through the bracket up and down to prevent blockage after the water-passing piece expands, and the water hole is arranged on the side of the bracket and is connected to the cavity.

[0006] The main body of the pressure-maintaining starting device is provided with a one-way valve for allowing liquid to flow from the input end to the output end in one direction.

[0007] The main body also includes a shell, which is provided with a cavity for installing the water-passing member, and a gap is left between the inner side of the cavity of the shell and the outer side of the water-passing member for the water-passing member to expand and deform.

[0008] A vent hole connecting the cavity with the outside air is arranged on the surface of the shell. When the water-passing member is deformed, the cavity of the shell maintains the internal and external air pressure balance through the vent hole.

[0009] Both ends of the shell are provided with sealing positioning grooves, and the end of the water passing piece is provided with a sealing flange limited on the sealing positioning groove corresponding to the sealing positioning groove, so that the water passing piece is positioned and installed on the shell.

[0010] A first joint is provided at one end of the shell, and the first joint is sleeved on the outside of the end of the shell. The first joint is provided with a water outlet channel forming an output end. A sealing flange at one end of the water passing part abuts against the inner side of the first joint to form a first sealed connection between the shell, the water passing part and the first joint.

[0011] The other end of the shell is provided with a second joint, the second joint is sleeved on the outside of the end of the shell, the second joint is provided with a water inlet channel forming an input end, and the sealing flange at the other end of the water-passing member abuts against the inner side of the second joint, so that a second sealed connection is formed between the shell, the water-passing member and the second joint;

[0012] An installation cavity for installing a second one-way valve is provided in the second joint.

[0013] The shell comprises a first shell and a second shell, and both the first shell and the second shell are provided with a connecting portion for connecting the inlet and outlet water joints.

[0014] A positioning connection portion is provided between the first shell and the second shell, and the first shell and the second shell are connected through the positioning connection portion and assembled into a shell enclosing the water-passing member.

[0015] The main body of the pressure-maintaining starting device is arranged on the water inlet pipe of the portable gas water heater.

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

[0017] A water-passing part that deforms with the liquid pressure is provided on the main body of the pressure-maintaining starting device, a water pump is provided at one end of the water channel, the water flow pressure-maintaining starting device is arranged between the water pump and the water outlet control valve, and a water outlet control valve is provided at the other end of the water channel. When the water outlet control valve is closed, and the water pump continues to pump water to the water-passing part, since the water outlet control valve is closed, water cannot flow out and is stored in the water-passing part of the flexible body, causing the water-passing part of the flexible body to expand and deform. When the water outlet control valve is opened again, the water-passing part of the flexible body releases pressure and pushes the liquid to flow to the water outlet control valve, so as to realize the delivery of a section of water flow toward the water outlet end of the water channel.

[0018] The above-mentioned water flow pressure maintaining starting device is applied to the gas water heater, so that even if the water pump is in the closed state, when the gas water heater turns on the shower again, the user does not need to manually operate the switch to trigger the water pump, so as to achieve the automatic pumping effect of the water pump of the gas water heater. The user only needs to operate the switch to trigger the water pump when using it for the first time, which is convenient for the user to operate. The water passing part will expand and deform when the shower is turned off for the first time. Since the water pump keeps running for a certain period of time (it can be understood that the water pump is delayed relative to the shower), the water pump actively transports liquid to the water passing part before closing. Since the shower cannot discharge water and the input end of the water passing part due to the action of the one-way valve cannot discharge water, water is stored in the water passing part, and the water passing part expands and deforms. After the shower is turned on for the second time, the water passing part releases pressure to push the liquid to the water flow sensor, thereby triggering the water flow sensor. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0020] Figure 1 It is a structural schematic diagram of a water flow pressure-maintaining starting device arranged in a waterway according to an embodiment of the present invention.

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

[0022] Figure 3 This is a structural schematic diagram of liquid stored in a water-passing member when the water outlet of a water flow pressure-maintaining starting device according to an embodiment of the present invention is in a closed state.

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

[0024] Figure 5 The figure is a schematic diagram of the assembly and decomposition structure of a water flow pressure-maintaining starting device according to one embodiment of the present invention.

[0025] Figure 6 It is a schematic diagram of the three-dimensional structure of a water flow pressure-maintaining starting device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, many specific details are set forth in the following description to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0027] See also Figure 1-Figure 6 A water flow pressure-maintaining starting device for a gas water heater comprises a pressure-maintaining starting device body 1 for connecting with a waterway and a water-passing member 4 arranged on the pressure-maintaining starting device body 1. An input end 2 and an output end 3 are arranged on the pressure-maintaining starting device body 1. The water-passing member 4 is respectively connected with the input end 2 and the output end 3 of the pressure-maintaining starting device body 1. The water-passing member 4 is a flexible body so that the water-passing member 4 expands as the water pressure increases and contracts as the water pressure decreases.

[0028] A water-passing piece 4 that deforms with the liquid pressure is provided on the main body 1 of the pressure-maintaining starting device, a water pump is provided at one end of the water channel, the water flow pressure-maintaining starting device is arranged between the water pump and the water outlet control valve, and a water outlet control valve is provided at the other end of the water channel. When the water outlet control valve is closed, and the water pump continues to pump water to the water-passing piece 4, since the water outlet control valve is closed, water cannot flow out and is stored on the flexible water-passing piece 4, causing the flexible water-passing piece 4 to expand and deform. When the water outlet control valve is opened again, the flexible water-passing piece 4 releases pressure and pushes the liquid to flow toward the water outlet control valve, so as to realize the delivery of a section of water flow toward the water outlet end of the water channel.

[0029] The water-passing member 4 is a flexible water pipe, and the material of the water-passing member 4 is rubber, plastic or latex. A bracket member 25 is provided inside the water-passing member 4 to prevent the water-passing member 4 from twisting due to multiple expansion and deformation. The bracket member 25 is provided with a cavity 26 and a water hole 27 that are communicated with the inner cavity of the water-passing member 4. The cavity 26 passes through the bracket member 25 from top to bottom to prevent blockage after the water-passing member 4 expands. The water hole 27 is arranged on the side of the bracket member 25 and communicates with the cavity 26.

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

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

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

[0033] Alternatively, the one-way valve 12 is provided with an elastic piston, and when water flows, the water pushes the piston open, and when the liquid flows back, it is blocked by the elastic piston, so that the liquid flows in one direction, so that the water-passing member 4 maintains the corresponding water pressure by expanding and deforming in the water storage state.

[0034] The main body 1 further comprises a shell 7 , on which a cavity 8 for mounting the water passing member 4 is provided, and a gap is left between the inner side of the cavity 8 of the shell 7 and the outer side of the water passing member 4 for the water passing member 4 to expand and deform.

[0035] The surface of the shell 7 is provided with a vent hole 9 connecting the cavity 8 with the outside air. When the water passing member 4 is deformed, the cavity 8 of the shell 7 maintains the internal and external air pressure balance through the vent hole 9.

[0036] In this embodiment, the water passing component 4 has an expanded water storage state and a water passing state. When the water passing component 4 is in the expanded water storage state, when the water path output end is opened, the water passing component 4 releases pressure, and outside air enters the cavity 8 through the air vent 9, causing the water passing component 4 to deform and reset, thereby pushing the liquid stored in the water passing component 4 to flow toward the water flow sensor 5.

[0037] In this embodiment, when the water passing member 4 is switched from the water passing state to the expanded water storing state, the water passing member 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 housing 7 are provided with sealing positioning grooves 10 , and the ends of the water passing member 4 are provided with sealing flanges 11 limited on the sealing positioning grooves 10 corresponding to the sealing positioning grooves 10 , so that the water passing member 4 is positioned and installed on the housing 7 .

[0039] A first joint 13 is provided at one end of the shell 7, and the first joint 13 is sleeved on the outside of the end of the shell 7. The first joint 13 is provided with a water outlet channel 15 forming the output end 3. A sealing flange 11 at one end of the water passing member 4 abuts against the inner side of the first joint 13, so that a first sealed connection is formed between the shell 7, the water passing member 4 and the first joint 13, thereby avoiding liquid leakage between the shell 7, the water passing member 4 and the first joint 13.

[0040] The other end of the housing 7 is provided with a second joint 14, which is sleeved on the outer side of the end of the housing 7. The second joint 14 is provided with a water inlet channel 16 forming the input end 2. The sealing flange 11 at the other end of the water-passing member 4 abuts against the inner side of the second joint 14, so that a second sealed connection is formed between the housing 7, the water-passing member 4 and the second joint 14, thereby preventing liquid leakage from occurring between the housing 7, the water-passing member 4 and the second joint 14.

[0041] The second joint 14 has a mounting cavity 20 therein for mounting the second one-way valve 12 .

[0042] The housing 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 a connecting portion 19 for connecting the inlet and outlet water joints.

[0043] In this embodiment, both ends of the first shell 17 and the second shell 18 are provided with external threads, and the first joint 13 and the second joint 14 are provided with internal threads.

[0044] A positioning connection portion 21 is provided between the first shell 17 and the second shell 18 . The first shell 17 and the second shell 18 are connected by the positioning connection portion 21 and assembled into a housing 7 enclosing the water-passing member 4 .

[0045] The main body 1 of the pressure-maintaining starting device is arranged 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 spliced ​​together, so that the water passing part 4 can be easily installed in the outer shell 7 .

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

[0048] In this embodiment, the first shell 17 and the second shell 18 are in a semicircular arc structure, and the first shell 17 and the second shell 18 can be fixed by ultrasonic welding.

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

[0050] The above-mentioned water flow pressure-maintaining starting device is applied to the gas water heater, so that even if the water pump is in the closed state, when the gas water heater turns on the shower again, the user does not need to manually operate the switch to trigger the water pump, so as to achieve the automatic pumping effect of the water pump of the gas water heater. The user only needs to operate the switch to trigger the water pump when using it for the first time, which is convenient for the user to operate. The water passing part 4 will expand and deform when the shower is turned off for the first time. Since the water pump keeps running for a certain period of time (it can be understood that the water pump is delayed relative to the shower), the water pump actively transports liquid to the water passing part 4 before closing. Since the shower cannot discharge water and the input end 2 of the water passing part 4 due to the action of the one-way valve 12 cannot discharge water, water is stored in the water passing part 4, and the water passing part 4 expands and deforms. After the shower is turned on for the second time, the water passing part 4 releases pressure to push the liquid to the water flow sensor 5, thereby triggering the water flow sensor 5.

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

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

[0053] Step 1: operate the start switch of the gas water heater, the water pump runs for the first time, the shower is turned on for the first time, and the liquid in the water tank enters the water passage 4 and flows through the water flow sensor 5;

[0054] Step 2: Turn off the shower, the water flow sensor 5 does not detect the water flow signal, the water pump is turned off with a delay relative to the shower, the liquid in the water storage tank 6 is pumped into the water passing part 4, and the water passing part 4 is in an expanded water storage and pressure maintaining state;

[0055] Step 3: When the shower is turned on for the second time, the water passage 4 releases the pressure and pushes the liquid to the water flow sensor 5, so as to trigger the water flow sensor 5 to output an electrical signal to start the water pump, so as to realize the operation-free start switch outputting an electrical signal to start the water pump.

[0056] In step 1, the water flow sensor 5 detects the water flow signal and feeds it back to the main control program, the gas valve opens and delivers gas to the burner, the ignition needle ignites, and within the corresponding time, the ignition needle thermocouple detects the flame, and the gas water heater operates normally;

[0057] In step 2, when the shower 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 liquid inlet end of the water pump is connected to the water storage tank 6, and the liquid outlet end 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 in sequence to form a hot water output pipeline;

[0060] The water pump is turned off for a longer time than the shower head is turned off. The water pump draws liquid from the water tank to pass through the water passage 4, the water flow sensor 5 and the heat exchanger. The liquid is heated and finally output from the shower head.

[0061] When the shower is turned off, the water pump is turned off with a delayed shutdown and continues to draw liquid into the water-passing part 4, which is in an expanded water-storing state; when the shower is turned on while the water-passing part 4 is in an expanded water-storing state, the water-passing part 4 releases pressure and pushes the liquid to flow toward 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 only 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 in the protection scope of the present invention.

Claims

1. A water flow pressure maintaining starting device for a gas water heater, characterized in that: The invention comprises a pressure-maintaining starting device body (1) for connecting with a water channel and a water-passing member (4) arranged on the pressure-maintaining starting device body (1); the pressure-maintaining starting device body (1) is provided with an input end (2) and an output end (3); the water-passing member (4) is respectively connected with the input end (2) and the output end (3) of the pressure-maintaining starting device body (1); the water-passing member (4) is a flexible body, so that the water-passing member (4) expands as the water pressure increases and contracts as the water pressure decreases.

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

3. The water flow pressure maintaining starting device according to claim 1, characterized in that: A support member (25) is provided inside the water-passing member (4) for preventing the water-passing member (4) from twisting due to multiple expansion deformations. The support member (25) is provided with a cavity (26) and a water-passing hole (27) that are in communication with the inner cavity of the water-passing member (4). The cavity (26) passes through the support member (25) from top to bottom to prevent the water-passing member (4) from being blocked after expansion. The water-passing hole (27) is provided on the side of the support member (25) and is in communication with the cavity (26).

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

5. The water flow pressure maintaining starting device according to claim 1, characterized in that: The main body (1) further comprises an outer shell (7), the outer shell (7) being provided with a cavity (8) for mounting the water-passing member (4), and a gap for the water-passing member (4) to expand and deform is left between the inner side of the cavity (8) of the outer shell (7) and the outer side of the water-passing member (4).

6. The water flow pressure maintaining starting device according to claim 5, characterized in that: A vent hole (9) is provided on the surface of the outer shell (7) for connecting the cavity (8) with the outside air. When the water-passing member (4) is deformed, the cavity (8) of the outer shell (7) maintains internal and external air pressure balance through the vent hole (9).

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

8. The water flow pressure maintaining starting device according to claim 7, characterized in that: A first joint (13) is provided at one end of the housing (7), the first joint (13) being sleeved on the outside of the end of the housing (7), the first joint (13) being provided with a water outlet channel (15) forming an output end (3), and a sealing flange (11) at one end of the water-passing member (4) abutting against the inner side of the first joint (13), so that a first sealing connection is formed between the housing (7), the water-passing member (4) and the first joint (13).

9. The water flow pressure maintaining starting device according to claim 7, characterized in that: The other end of the housing (7) is provided with a second joint (14), the second joint (14) is sleeved on the outside of the end of the housing (7), the second joint (14) is provided with a water inlet channel (16) forming the input end (2), and the sealing flange (11) at the other end of the water-passing member (4) abuts against the inner side of the second joint (14), so that a second sealed connection is formed between the housing (7), the water-passing member (4) and the second joint (14); The second joint (14) is provided with a mounting cavity (20) for mounting the second one-way valve (12).

10. The water flow pressure maintaining starting device according to claim 5, characterized in that: The housing (7) comprises a first shell (17) and a second shell (18), and both the first shell (17) and the second shell (18) are provided with a connecting portion (19) for connecting an inlet and outlet water joint. A positioning connection portion (21) is provided between the first shell (17) and the second shell (18); the first shell (17) and the second shell (18) are connected via the positioning connection portion (21) and assembled into a housing (7) enclosing the water-passing member (4); The pressure-maintaining starting device body (1) is arranged on the water inlet pipe of the portable gas water heater (24).

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