External zero - cold water control system for existing household wall - hung boilers

Abstract

The present invention belongs to the technical field of cold water control systems, and particularly relates to an external zero-cold water control system for existing household wall-mounted boilers. The present invention includes a dual-purpose gas heating and hot water boiler main body. By setting up a zero-cold water control component, the zero-cold water control component senses the water temperature. If it is cold water, the cold water is allowed to flow back through the return water component for secondary heating; if it is hot water, the hot water is sent to the water outlet faucet to flow out hot water. The water supply in the cold water pipe is mainly provided by the return water component. In this way, even if the machine works for a slightly longer time, there is no need to worry about the hot water in the hot water pipe running into the cold water pipe, so that no hot water will come out when using cold water at the washbasin at home. It has strong practicability, saves water resources, and enables users to use hot water immediately when turning it on, saving waiting time, which is very necessary for existing household wall-mounted boilers.

Description

Technical Field

[0001] The present invention belongs to the technical field of cold water control systems and relates to an external zero - cold - water control system for existing household wall - hung boilers. Background Art

[0002] When using the bathroom function of a household wall - hung boiler, there is usually a section of cold water. This cold water needs to be drained first, which will waste a lot of water. And it takes some time to heat the water. This wastes both water and time. Therefore, there is an urgent need for an external zero - cold - water control system for existing household wall - hung boilers to solve these two problems.

[0003] In order to overcome the deficiencies of the prior art, people have continuously explored and proposed various solutions. For example, a Chinese patent discloses a storage - type electric water heater with a safety device [Application No.: 201210054508.0], which includes an inner tank, a heat - insulating layer, an electric heating tube, and a shell. The inner tank is provided with a cold - water inlet pipe and a hot - water outlet pipe; it also includes a safety protection device, and the safety protection device includes a controller and a water - flow sensing device; the controller includes a single - chip microcomputer and a relay; the water - flow sensing device cooperates with the cold - water inlet pipe or the hot - water outlet pipe. Due to this structure, when there is water flow in the cold - water inlet pipe, the grounding wire of the power supply line is disconnected from the shell of the water heater, and the connection between the live wire and the neutral wire of the power supply line and the electric heating tube is disconnected to stop heating, thus ensuring the safety of users. However, this solution is not applicable to household wall - hung boilers and it is difficult to provide hot water immediately when needed, with the defect of a relatively long waiting time. Summary of the Invention

[0004] The purpose of the present invention is to provide an external zero - cold - water control system for existing household wall - hung boilers in view of the above problems.

[0005] To achieve the above - mentioned purpose, the present invention adopts the following technical solutions:

[0006] An external zero - cold - water control system for existing household wall - hung boilers includes a dual - purpose gas - fired heating and hot - water boiler main body. The dual - purpose gas - fired heating and hot - water boiler main body is provided with a heating inlet pipe, a heating outlet pipe, and a bathroom outlet pipe. A zero - cold - water control component is provided on the bathroom outlet pipe. A return - water component is provided at one end of the bathroom outlet pipe far from the dual - purpose gas - fired heating and hot - water boiler main body. An outlet faucet is provided between the zero - cold - water control component and the return - water component. The zero - cold - water control component and the return - water component are respectively connected to the outlet faucet.

[0007] In the above - mentioned external zero - cold - water control system for existing household wall - hung boilers, the zero - cold - water control component includes an outlet - pipe connection control block arranged on the bathroom outlet pipe. The outlet - pipe connection control block is internally provided with a detachable temperature - sensing member, and the position of the detachable temperature - sensing member corresponds to that of the bathroom outlet pipe.

[0008] In the above-mentioned external zero-cold-water control system for existing household wall-mounted boilers, a connecting pipe groove is provided in the connecting control block of the water outlet pipe. The detachable temperature sensing element includes a water temperature sensor disposed in the connecting control block of the water outlet pipe, and the position of the water temperature sensor corresponds to that of the connecting pipe groove.

[0009] In the above-mentioned external zero-cold-water control system for existing household wall-mounted boilers, a number of pipe positioning blocks are provided on the water temperature sensor symmetrically along the center line of the water temperature sensor. The pipe positioning blocks are in abutting cooperation with the corresponding pipes of the connecting pipe groove. One end of the water temperature sensor away from the connecting pipe groove is provided with a detachable connecting member, and the detachable connecting member is in abutting cooperation with the connecting control block of the water outlet pipe.

[0010] In the above-mentioned external zero-cold-water control system for existing household wall-mounted boilers, the detachable connecting member includes a control block screwing plate disposed on the water temperature sensor. A lightweight connecting rod is provided between the control block screwing plate and the water temperature sensor. One end of the lightweight connecting rod is connected to the control block screwing plate, and the other end is connected to the water temperature sensor. The control block screwing plate and the connecting control block of the water outlet pipe are connected by a number of fastening bolts.

[0011] In the above-mentioned external zero-cold-water control system for existing household wall-mounted boilers, two sealing inner rings are provided in the connecting control block of the water outlet pipe, and two pipe alignment sleeves are also provided on the connecting control block of the water outlet pipe symmetrically along the center line of the connecting control block of the water outlet pipe.

[0012] In the above-mentioned external zero-cold-water control system for existing household wall-mounted boilers, the return water member includes a return water pipe provided at one end of the bathroom water outlet pipe away from the main body of the dual-purpose gas heating and hot water boiler. One end of the return water pipe is connected to the bathroom water outlet pipe, and the other end is connected to the water outlet faucet.

[0013] In the above-mentioned external zero-cold-water control system for existing household wall-mounted boilers, a check valve is provided on the return water pipe, and the position of the check valve corresponds to that of the water pipe connecting control block.

[0014] In the above-mentioned external zero-cold-water control system for existing household wall-mounted boilers, the check valve is located at the connection between the return water pipe and the bathroom water outlet pipe. A pressure valve is also provided in the return water pipe, and the position of the pressure valve corresponds to that of the water outlet faucet.

[0015] In the above-mentioned external zero-cold-water control system for existing household wall-mounted boilers, a return water pipe fixing plate is provided on the pressure valve, and a fixing plate abutting block is provided on the return water pipe. The return water pipe fixing plate and the fixing plate abutting block are connected by a number of fastening bolts.

[0016] Compared with the existing technologies, the advantages of the present invention are as follows:

[0017] 1. By setting up a zero - cold - water control component, the present invention senses the water temperature through the zero - cold - water control component. If it is cold water, the cold water is made to flow back through the return water part for secondary heating; if it is hot water, the hot water is sent to the water outlet faucet to flow out hot water. The water supply in the cold - water pipe is mainly provided by the return water part. In this way, even if the machine works for a slightly longer time, there is no need to worry about the hot water in the hot - water pipe running into the cold - water pipe, because when the hot water in the cold - water pipe reaches the zero - cold - water control component and the temperature - sensing probe of the machine senses the hot water, the machine stops working. Thus, no hot water will come out when using cold water at the washbasin at home. It has strong practicability, saves water resources, and enables users to use hot water immediately when they turn it on, saving waiting time, which is very necessary for existing domestic wall - hung boilers.

[0018] 2. When the present invention discharges cold water, the pressure - increasing valve can pressurize the cold water and then send it to the water outlet faucet, and the water outlet is relatively fast, avoiding the reduction of water volume due to the too - long return water pipe. The return - water pipe fixing plate and the fixing - plate abutting block are connected by a number of fastening bolts, which is convenient for fixing the pressure - increasing valve. The connection effect is good, and disassembly and assembly are simple and convenient.

[0019] 3. By setting up a lightweight connecting rod to connect and fix the control - block screwing plate and the water - outlet pipe connection control block, the control - block screwing plate can fix the water - temperature sensor. The control - block screwing plate and the water - outlet pipe connection control block are connected by a number of fastening bolts, and the disassembly and assembly are simple and convenient. Adopting a detachable structure, it is convenient for the staff to disassemble, assemble and repair the water - temperature sensor, reducing the household use cost.

[0020] Other advantages, objectives and features of the present invention will be partly reflected by the following description and partly understood by those skilled in the art through the research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is the structural schematic diagram of the present invention.

[0022] Figure 2 is the structural schematic diagram of the zero - cold - water control component.

[0023] Figure 3 is Figure 1 the enlarged schematic diagram of part A in

[0024] Figure 4 is the cross - sectional schematic diagram of the pipe positioning block.

[0025] In the figure: the main body 1 of the dual-purpose gas heating and hot water boiler, the heating water inlet pipe 2, the heating water outlet pipe 3, the bathroom water outlet pipe 4, the zero cold water control component 5, the water return component 6, the water outlet faucet 7, the water outlet pipe connection control block 8, the detachable temperature sensing component 9, the connecting pipe groove 10, the water temperature sensor 11, the pipe positioning block 12, the detachable connecting piece 13, the control block screwing plate 14, the lightweight connecting rod 15, the sealing inner ring 16, the pipe alignment sleeve 17, the water return pipe 18, the check valve 19, the pressure valve 20, the water return pipe fixing plate 21, the fixing plate abutting block 22. Detailed implementation mode

[0026] The present invention will be further described below with reference to the attached drawings.

[0027] As Figures 1-4 shown, an external zero cold water control system for an existing household wall-mounted boiler includes the main body 1 of the dual-purpose gas heating and hot water boiler. It is characterized in that the main body 1 of the dual-purpose gas heating and hot water boiler is provided with a heating water inlet pipe 2, a heating water outlet pipe 3 and a bathroom water outlet pipe 4. A zero cold water control component 5 is provided on the bathroom water outlet pipe 4. A water return component 6 is provided at one end of the bathroom water outlet pipe 4 far away from the main body 1 of the dual-purpose gas heating and hot water boiler. An outlet faucet 7 is provided between the zero cold water control component 5 and the water return component 6. The zero cold water control component 5 and the water return component 6 are respectively connected to the outlet faucet 7.

[0028] In this embodiment, during the use process, the zero cold water control component 5 is connected to the bathroom water outlet pipe 4. When using water, the faucet is opened. The zero cold water control component 5 senses the water temperature. If it is cold water, the cold water is allowed to flow into the main body of the dual-purpose gas heating and hot water boiler through the water return component 6 for secondary heating. When the zero cold water control component 5 senses that hot water has arrived, the hot water is sent to the outlet faucet 7 to flow out hot water. During the working process of the water return component 6, the water supply in the cold water pipe is mainly provided by the water return component 6. In this way, even if the machine works for a slightly longer time, there is no need to be afraid that the hot water in the hot water pipe will run into the cold water pipe, because when the hot water in the cold water pipe reaches the zero cold water control component 5, the machine stops working when the temperature sensing probe of the machine senses hot water, so that no hot water will come out when using cold water at the washbasin at home. It has strong practicability, saves water resources, and enables users to use hot water immediately when they turn it on, saving waiting time, which is very necessary for existing household wall-mounted boilers.

[0029] Combined with Figure 1 、 Figure 2 shown, the zero cold water control component 5 includes an outlet pipe connection control block 8 arranged on the bathroom water outlet pipe 4. A detachable temperature sensing component 9 is arranged in the outlet pipe connection control block 8. The position of the detachable temperature sensing component 9 corresponds to that of the bathroom water outlet pipe 4.

[0030] Specifically, the water outlet pipe is connected to the control block 8, which is connected to the bathroom water outlet pipe 4. After the water flows through the water outlet pipe connection control block 8, the water temperature is sensed by the detachable temperature sensing member 9. If it is cold water, the cold water is allowed to flow through the return water member 6 into the dual-purpose gas heating water heater main body for secondary heating, and cold water is provided to the water outlet faucet 7 through the return water member 6. If it is hot water, the hot water is sent to the water outlet faucet 7 to flow out hot water. The detachable temperature sensing member 9 adopts a detachable structure, which is convenient for the staff to disassemble and repair, reducing the household use cost.

[0031] Combined with Figure 1 、 Figure 2 As shown, a connecting pipe groove 10 is provided in the water outlet pipe connection control block 8. The detachable temperature sensing member 9 includes a water temperature sensor 11 arranged in the water outlet pipe connection control block 8, and the position of the water temperature sensor 11 corresponds to that of the connecting pipe groove 10.

[0032] In this embodiment, the connecting pipe groove 10 is used to circulate water, and the water temperature sensor 11 is used to sense the water temperature of the flowing water to determine whether it is cold water or hot water.

[0033] Combined with Figure 2 、 Figure 4 As shown, a number of pipe positioning blocks 12 symmetrically arranged along the center line of the water temperature sensor 11 are provided on the water temperature sensor 11. The pipe positioning blocks 12 are in abutting fit with the corresponding pipes of the connecting pipe groove 10. One end of the water temperature sensor 11 away from the connecting pipe groove 10 is provided with a detachable connecting member 13, and the detachable connecting member 13 is in abutting fit with the water outlet pipe connection control block 8.

[0034] In this embodiment, the pipe positioning blocks 12 are used to position and fix the water temperature sensor 11, and at the same time play a sealing role to avoid water leakage during measurement. The detachable connecting member 13 adopts a detachable structure, which is convenient for the staff to disassemble and repair the water temperature sensor 11, reducing the household use cost.

[0035] Combined with Figure 2 As shown, the detachable connecting member 13 includes a control block screwing plate 14 arranged on the water temperature sensor 11. A lightweight connecting rod 15 is provided between the control block screwing plate 14 and the water temperature sensor 11. One end of the lightweight connecting rod 15 is connected to the control block screwing plate 14, and the other end is connected to the water temperature sensor 11. The control block screwing plate 14 and the water outlet pipe connection control block 8 are connected by a number of fastening bolts.

[0036] In this embodiment, the lightweight connecting rod 15 is used to connect and fix the control block screwing plate 14 and the water outlet pipe connection control block 8. The control block screwing plate 14 can fix the water temperature sensor 11. The control block screwing plate 14 and the water outlet pipe connection control block 8 are connected by a number of fastening bolts, which is simple and convenient to disassemble and assemble.

[0037] The described water outlet pipe connection control block 8 is provided with two sealing inner rings 16, and the water outlet pipe connection control block 8 is also provided with two pipe alignment sleeves 17 that are symmetric about the center line of the water outlet pipe connection control block 8.

[0038] In this embodiment, the sealing inner ring 16 plays a sealing role to prevent water leakage after connection. The pipe alignment sleeve 17 can facilitate the alignment and sleeving of the connecting pipe and the water outlet pipe connection control block 8, with accurate alignment.

[0039] The described water return member 6 includes a return water pipe 18 provided at one end of the bathroom water outlet pipe 4 away from the dual-purpose gas heating and hot water boiler main body 1. One end of the return water pipe 18 is connected to the bathroom water outlet pipe 4, and the other end is connected to the water outlet faucet 7.

[0040] In this embodiment, the return water pipe 18 can send cold water to the water outlet faucet 7 to discharge cold water, and can also send the cold water back to the dual-purpose gas heating and hot water boiler main body for secondary heating, with strong practicability.

[0041] Combined with Figure 1 As shown, a check valve 19 is provided on the return water pipe 18, and the position of the check valve 19 corresponds to that of the water pipe connection control block 8.

[0042] In this embodiment, when the water temperature sensor 11 senses cold water, the check valve 19 is opened to allow the cold water to flow through the return water pipe 18 into the dual-purpose gas heating and hot water boiler main body for secondary heating; when the water temperature sensor 11 senses hot water, the check valve 19 is immediately closed, and hot water flows out of the water outlet faucet 7.

[0043] Combined with Figure 1 、 Figure 3 As shown, the check valve 19 is located at the connection between the return water pipe 18 and the bathroom water outlet pipe 4. A pressure valve 20 is also provided in the return water pipe 18, and the position of the pressure valve 20 corresponds to that of the water outlet faucet 7.

[0044] In this embodiment, when discharging cold water, the pressure valve 20 can pressurize the cold water and send it to the water outlet faucet 7, and the water discharge is relatively rapid, avoiding the reduction of water volume due to the too long pipeline of the return water pipe 18.

[0045] Combined with Figure 3 As shown, a return water pipe fixing plate 21 is provided on the pressure valve 20, and a fixing plate abutting block 22 is provided on the return water pipe 18. The return water pipe fixing plate 21 and the fixing plate abutting block 22 are connected by a number of fastening bolts.

[0046] In this embodiment, the return water pipe fixing plate 21 and the fixing plate abutting block 22 are connected by a number of fastening bolts, which facilitates the fixation of the pressure valve 20. The connection effect is good, and the disassembly and assembly are simple and convenient.

[0047] The working principle of the present invention is as follows:

[0048] During use, connect the water outlet pipe to the control block 8 and the bathroom water outlet pipe 4. When using water, turn on the faucet. The water temperature sensor 11 senses the water temperature. If it is cold water, let the cold water flow into the dual-purpose gas heating and hot water furnace body through the return pipe 18 for secondary heating. When the water temperature sensor 11 senses that hot water has arrived, the hot water is sent to the water outlet faucet 7 to flow out hot water. During the working process of the return pipe 18, the water supply in the cold water pipe is mainly provided by the return pipe 18. In this way, even if the machine works for a slightly longer time, there is no need to worry about the hot water in the hot water pipe running into the cold water pipe, because when the hot water in the cold water pipe reaches the water outlet pipe connection control block 8, the machine temperature sensor senses the hot water and the machine stops working. In this way, hot water will not come out when using cold water at the washbasin at home. It has strong practicability, saves water resources, and allows users to use hot water immediately when they turn it on, saving waiting time, which is very necessary for existing household wall-mounted boilers.

[0049] The pipeline positioning block 12 is used to position and fix the water temperature sensor 11, and at the same time plays a sealing role to avoid water leakage. The detachable connector 13 adopts a detachable structure, which is convenient for the staff to disassemble and repair the water temperature sensor 11, reducing the household use cost.

[0050] The lightweight connecting rod 15 is used to connect and fix the control block screwing plate 14 and the water outlet pipe connection control block 8. The control block screwing plate 14 can fix the water temperature sensor 11. The control block screwing plate 14 and the water outlet pipe connection control block 8 are connected by a number of fastening bolts, and the disassembly and assembly are simple and convenient.

[0051] The sealing inner ring 16 plays a sealing effect to avoid water leakage after connection. The pipeline alignment sleeve 17 can facilitate the alignment and sleeving of the connecting pipe and the water outlet pipe connection control block 8, with accurate alignment.

[0052] When cold water is discharged, the pressure valve 20 can pressurize the cold water and send it to the water outlet faucet 7, and the water outlet is relatively fast, avoiding the reduction of water volume due to the too long pipeline of the return pipe 18. The return pipe fixing plate 21 and the fixing plate abutting block 22 are connected by a number of fastening bolts, which is convenient for fixing the pressure valve 20. The connection effect is good, and the disassembly and assembly are simple and convenient.

[0053] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, but will not deviate from the spirit of the present invention.

[0054] Although terms such as dual-purpose gas heating and hot water boiler main body 1, heating water inlet pipe 2, heating water outlet pipe 3, bathroom water outlet pipe 4, zero cold water control component 5, water return component 6, water outlet faucet 7, water outlet pipe connection control block 8, detachable temperature sensing component 9, connecting pipe groove 10, water temperature sensor 11, pipe positioning block 12, detachable connecting piece 13, control block screwing plate 14, lightweight connecting rod 15, sealing inner ring 16, pipe alignment sleeve 17, return water pipe 18, check valve 19, pressure valve 20, return water pipe fixing plate 21, fixing plate abutting block 22 are used more frequently in this text, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention, and interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. An external zero - cold - water control system for an existing household wall - hung gas boiler, including a dual - purpose gas - fired heating and hot - water boiler main body (1), characterized in that, On the main body (1) of the dual-purpose gas heating and hot water boiler, there are a heating water inlet pipe (2), a heating water outlet pipe (3), and a bathroom water outlet pipe (4). A zero cold water control component (5) is provided on the bathroom water outlet pipe (4). At one end of the bathroom water outlet pipe (4) far from the main body (1) of the dual-purpose gas heating and hot water boiler, there is a water return component (6). An outlet faucet (7) is provided between the zero cold water control component (5) and the water return component (6). The zero cold water control component (5) and the water return component (6) are respectively connected to the outlet faucet (7). The zero cold water control component (5) includes an outlet pipe connection control block (8) arranged on the bathroom water outlet pipe (4). A detachable temperature sensing component (9) is arranged in the outlet pipe connection control block (8). The detachable temperature sensing component (9) corresponds to the position of the bathroom water outlet pipe (4). A connecting pipe groove (10) is arranged in the outlet pipe connection control block (8). The detachable temperature sensing component (9) includes a water temperature sensor (11) arranged in the outlet pipe connection control block (8). The water temperature sensor (11) corresponds to the position of the connecting pipe groove (10). A number of pipe positioning blocks (12) symmetrically arranged along the center line of the water temperature sensor (11) are arranged on the water temperature sensor (11). The pipe positioning blocks (12) are in abutting cooperation with the corresponding pipes of the connecting pipe groove (10). At one end of the water temperature sensor (11) far from the connecting pipe groove (10), there is a detachable connecting piece (13). The detachable connecting piece (13) is in abutting cooperation with the outlet pipe connection control block (8). The detachable connecting piece (13) includes a control block screwing plate (14) arranged on the water temperature sensor (11). A lightweight connecting rod (15) is arranged between the control block screwing plate (14) and the water temperature sensor (11). One end of the lightweight connecting rod (15) is connected to the control block screwing plate (14), and the other end is connected to the water temperature sensor (11). The control block screwing plate (14) and the outlet pipe connection control block (8) are connected by a number of fastening bolts. The water return component (6) includes a return water pipe (18) arranged at one end of the bathroom water outlet pipe (4) far from the main body (1) of the dual-purpose gas heating and hot water boiler. A fixing plate abutting block (22) is arranged on the return water pipe (18).

2. The external zero - cold water control system for existing household wall - hung boilers according to claim 1, characterized in that, Two sealing inner rings (16) are arranged in the outlet pipe connection control block (8). Two pipe alignment sleeves (17) symmetrically arranged along the center line of the outlet pipe connection control block (8) are also arranged on the outlet pipe connection control block (8).

3. The external zero - cold water control system for existing household wall - hung boilers according to claim 2, characterized in that, One end of the return water pipe (18) is connected to the bathroom water outlet pipe (4), and the other end is connected to the outlet faucet (7).

4. The external zero - cold water control system for existing household wall - hung boilers according to claim 3, characterized in that, A check valve (19) is arranged on the return water pipe (18). The check valve (19) corresponds to the position of the outlet pipe connection control block (8).

5. The external zero - cold water control system for existing household wall - hung boilers according to claim 4, wherein, The check valve (19) is located at the connection of the return water pipe (18) and the bathroom water outlet pipe (4). A pressure valve (20) is also arranged in the return water pipe (18). The pressure valve (20) corresponds to the position of the outlet faucet (7).

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