Energy-saving kitchen and bathroom heater with in-pipe cold water recovery

Abstract

To provide an energy saving kitchen / bathroom heater which is applied to a heater technology field and can avoid increase of pipe arrangement and a maintenance cost.SOLUTION: An energy saving kitchen / bathroom heater includes a hot water combination pipe formed by a metal hose and an internal hot water guide pipe module inserted into the metal hose. The internal hot water guide pipe module includes an inlet pipe head, an internal hot water guide pipe module body, and a water inlet pipe tip. The hot water combination pipe body includes an outer tube, an inner tube, and an internal hot water guide pipe. The internal hot water guide pipe is formed of an elastomer material. The outer tube, the inner tube, and the internal hot water guide pipe are arranged in interposing relations to form one pipe. A wall surface of the internal hot water guide pipe is expanded or contracted by a water pressure to reuse cool water in a pipe having an arbitrary length in a case of one pipe.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to the technical field of heating appliances, and more particularly to an energy-saving heater for kitchens and bathrooms that can recover cold water in pipes. [Background technology]

[0002] A boiler is a type of gas water heater whose working process involves burning gas to release heat and transferring that heat to cold water to produce hot water. A gas water heater mainly consists of a valve assembly, main burner, small burner, heat exchanger, and safety device, but also includes a flue for flue-type water heaters and a forced exhaust device for forced-vent water heaters.

[0003] In daily life, when a water heater is located a certain distance from the faucet outlet, the hot water stays in the pipeline when it is not in use, and it becomes cold. For example, a gas water heater installed in a kitchen is located a little distance from the bathroom faucet or balcony faucet, so when hot water is used, cold water must be discharged from the pipe, which increases the waiting time for hot water and wastes water resources.

[0004] Although there are prior arts that solve the above problems, they do not completely solve the problems and still have problems to a greater or lesser extent. For example, the Chinese patent "Water Heater and Its Pipeline Cold Water Recycling System" (No. CN106052134B) can solve the above problems to some extent, but it uses a method in which "water in the water tank flows into the hot water pipe, and the cold water in the hot water pipe flows into the water bag through the cold water circulation pipe." The closed loop formed by this method involves hot water and cold water coming into direct contact with each other and being alternately replaced, resulting in heat transfer between the hot and cold water. In the case of long-distance transmission, such as on a balcony, a large amount of hot water will transfer heat to the cold water, which will result in the cooling of the hot water, prolonging the waiting time for hot water and wasting water resources. Furthermore, although the Chinese patent "Water Heater Cold Water Recovery Device" (No. CN204787270U) can solve the above problems to some extent, it uses too many taps and pipelines, which not only results in excessive buried equipment, but also increases the cost of using the pipelines and maintenance costs, especially in the case of long-distance transmission, such as on a balcony.

[0005] To solve this problem, an energy-saving kitchen and bathroom heater that can recover cold water within the pipes was proposed to rationally solve the problem of long wait times for hot water and water waste due to the long distance between the water heater and the point where the water comes out of the faucet. Summary of the Invention [Means for solving the problem]

[0006] The purpose of this invention is to address the drawbacks of the prior art, which is that the water heater is installed some distance from the water faucet, resulting in a long wait for hot water and wasting water resources. In order to solve this problem, an energy-saving kitchen and bathroom heater with in-pipe cold water recovery is proposed.

[0007] An energy-saving kitchen / bathroom heater capable of recovering cold water in pipes, comprising a pipe assembly retrofitted to a water heater body, the pipe assembly including a cold water pipe, a gas import pipe, and a hot water export pipe; a hot water combination pipe is installed in the hot water export pipe, and the hot water combination pipe is attached to the water heater body by a hot water connection pipe, the hot water combination pipe being composed of a metal hose and an internal hot water conduit module inserted into the metal hose; The internal hot water conduit module includes a water inlet pipe end, an internal hot water conduit module body, and a water outlet pipe end, with the water inlet pipe end and the water outlet pipe end respectively attached to both ends of the internal hot water conduit module body; the internal hot water conduit module body includes an outer tube, with an inner tube installed inside the outer tube, and the internal hot water conduit inserted inside the inner tube, the inner tube made of an elastomeric material, and its inner and outer surfaces covered with a layer of insulating material; the internal space of the internal hot water conduit forms water tank I, and the space between the inner tube and the internal hot water conduit forms water tank II. After the hot water enters the internal hot water conduit module, the tip of the water-filled pipe distributes the hot water to the internal hot water conduit, and the hot water passes through Water Tank I. The water pressure pushes the elastic wall of the internal hot water conduit outward, compressing Water Tank II, discharging cold water from Water Tank II. The cold water is then discharged from the inner tube and the internal hot water conduit, forcing the walls of the inner tube and the internal hot water conduit together, emptying the cold water from Water Tank II and completing the non-contact discharge and reuse of cold water in Water Flow Mode I. The tip of the water-filled pipe distributes hot water between the inner tube and the internal hot water conduit, passing the hot water into Water Tank II. The water pressure presses the elastic wall of the internal hot water conduit inward, compressing Water Tank I, discharging cold water from Water Tank I and pressing the walls of the internal hot water conduit together, emptying the cold water in Water Tank I, completing the non-contact discharge and reuse of cold water in Water Flow Mode II.

[0008] The internal hot water conduit is made of an elastomeric material, allowing the walls of the internal hot water conduit to expand and contract under water pressure. Water Tank I, formed inside the internal hot water conduit, and Water Tank II, formed in the space between the internal hot water conduits, alternate between these two modes, squeezing each other's cold water. Alternating between Water Flow Mode I and Water Flow Mode II enables non-contact discharge and reuse of cold water, solving the problem of water being wasted when the water heater is installed some distance from the tap, resulting in long wait times for hot water. Furthermore, because hot and cold water are alternately switched in direct contact with each other, heat is transferred between the two. When transmitting over long distances, such as on a balcony, a large amount of hot water transfers heat to the cold water, avoiding the problem of hot water cooling resulting in long wait times for hot water and wasting water. At the same time, the outer tube, outer tube, and internal hot water conduit are interposed to form a single pipe, and by using water pressure to expand and contract the wall of the internal hot water conduit, it is possible to alternate between water flow modes 1 and 2.In the case of a single pipe, it is possible to achieve non-contact discharge of cold water for reuse using a pipe of any length, which ensures the amount of treated water while reducing the amount of construction work.In addition, because there is no need to increase the amount of auxiliary pipes, the amount of pipe usage can be reduced and increases in pipe usage and maintenance costs can be avoided.

[0009] In the technical solution of the present invention, the inlet pipe head includes a distribution pipe A and a scheduling pipe A, and the distribution pipe A is connected to the connecting pipe A at the end away from the internal hot water conduit module body, and the connecting pipe A is connected to the hot water connecting pipe; One end of the scheduling pipe A is connected to the junction between the distribution pipe A and the connection pipe A, and the other end is connected to an inner tube, which is then connected to the water tank II.

[0010] Furthermore, the distribution pipe A is connected to the internal hot water conduit, and a solenoid valve A is attached to the distribution pipe A to turn on and off between the distribution pipe A and the internal hot water conduit, A stopcock A is attached to the scheduling pipe A to turn on and off the connection between the connecting pipe A and the water tank II.

[0011] In the technical solution of the present invention, the outlet header includes a scheduling pipe B and a distribution pipe B, the distribution pipe B is connected to the connecting pipe B at the end remote from the internal hot water conduit module body, the connecting pipe B is connected to the hot water export pipe, one end of the scheduling pipe B is connected to the junction between the distribution pipe B and the connecting pipe B, and the other end is connected to the inner tube and connected to the water tank II.

[0012] Furthermore, the distribution pipe B is connected to the internal hot water conduit, and a solenoid valve B is attached to the distribution pipe B to turn on and off between the distribution pipe B and the internal hot water conduit, A stopper B is attached to the scheduling pipe B to turn on and off the connection between the connecting pipe B and the water tank II.

[0013] Preferably, a cold water recovery pipe module is attached to the internal hot water conduit module body, and the cold water recovery pipe module is used to discharge the cold water discharged from the internal hot water combination conduit body; The cold water recovery pipe module is connected to the cold water pipe via a cold water circulation pipe, and the cold water pipe is used to transfer cold water to the cold water pipe for reuse.

[0014] The cold water recovery pipe module includes an export pipe A and an export pipe B, the export pipe A is connected to the inner tube and connected to the water tank II, and the export pipe B is connected to the internal hot water conduit and connected to the water tank I.

[0015] The export pipes A and B are connected to a main pipe at the ends remote from the internal hot water pipe module body, and the main pipe is connected to a cold water circulation pipe via a connecting pipe C.

[0016] The export pipes A and B are fitted with solenoid valves C.

[0017] Gas is introduced into the water heater body as fuel through the gas inlet pipe, where it is burned and heat is released to heat the cold water introduced through the cold water pipe. After the cold water is heated, the hot water is discharged through the hot water export pipe. During this process, the hot water enters the inlet pipe head of the internal hot water conduit module and first enters connecting pipe A. At this time, tap A is closed, solenoid valve A is opened, opening distribution pipe A and the internal hot water conduit. Connecting pipe A and water tank II are switched to closed positions, distributing the hot water within the internal hot water conduit and allowing it to pass through water tank I. At this time, tap B is closed, solenoid valve B is opened, opening distribution pipe B and the internal hot water conduit. Connecting pipe B and water tank II are switched to closed positions, allowing the hot water to be introduced through connecting pipe B into the hot water export pipe for use. During the process of hot water passing through water tank I, the water pressure pushes the elastic wall of the internal hot water conduit outward, compressing water tank II and discharging cold water from water tank II. The solenoid valve C When the export pipe A is open and the export pipe B is closed, the cold water discharged from the water tank II flows into the export pipe A, and then flows through the main pipe and the connecting pipe. C Then, the inner tube and the inner hot water pipe wall are squeezed together to empty the cold water in the water tank II, completing the non-contact discharge and reuse of the cold water in the water flow mode I.

[0018] At the next use, hot water enters the inlet pipe head of the internal hot water conduit module and first enters the inside of connecting pipe A. At this time, open tap A, close solenoid valve A, close distribution pipe A and internal hot water conduit, and switch connecting pipe A and water tank II to open state. The inlet pipe head distributes hot water between the inner pipe and internal hot water conduit through scheduling pipe A, and passes hot water to water tank II. At this time, open tap B, close solenoid valve B, close the connection between distribution pipe B and internal hot water conduit, and switch connecting pipe B and water tank II to open state. Hot water is introduced into the hot water export pipe through connecting pipe B for use. During the process of passing hot water to water tank I, the water pressure presses the elastic wall of the internal hot water conduit inward, compressing water tank I and discharging cold water from water tank I, and solenoid valve CWhen the outlet pipe A is closed and the outlet pipe B is open, the cold water discharged from the water tank I flows into the outlet pipe B, and then flows through the main pipe and the connecting pipe. C Then, the cold water enters the cold water circulation pipe and is reused; the wall of the internal hot water conduit is squeezed to empty the cold water in the water tank I, completing the non-contact discharge and reuse of the cold water in the water flow mode II.

[0019] In the technical solution of the present invention, the inner tube is composed of a multi-unit inner tube and a multi-stage rubber hose, and the multi-unit inner tube and the multi-stage rubber hose are arranged in a cross shape, with the outer wall of the rubber hose fixed inside the outer tube; the unit inner tube is composed of an outer telescopic tube and an inner elastic tube inserted inside the outer telescopic tube; the outer telescopic tube is composed of a plurality of arc-shaped storage plates and a plurality of arc-shaped grid plates, and the plurality of arc-shaped storage plates and the plurality of arc-shaped grid plates are arranged in a circular cross-shaped configuration; the arc-shaped storage plates are formed with slots, and the arc-shaped grid plates are inserted into the slots by the elasticity of the elastic spacers; electromagnetic coils are attached to both sides of the surface of the arc-shaped storage plate, and by controlling the strength of the current, different magnetic adsorption forces are generated on both sides of the arc-shaped storage plate. After a force balance with the elastic spacers is reached, the elasticity of the arc-shaped grid plates and the penetration degree within the slots can be adjusted to realize the expansion and contraction adjustment of the radius of the self-tube.

[0020] When the water volume needs to be adjusted, different magnetic adsorption forces are generated on both sides of the arc-shaped storage plate by controlling the strength of the current flow. After the force balance with the elastic spacer is reached, the elasticity of the arc-shaped grid plate and the penetration degree within the slot are adjusted, thereby adjusting the expansion and contraction of the radius of the self-pipe and realizing different water volume adjustments. [Effects of the Invention]

[0021] Compared to conventional technology, this invention, an energy-saving kitchen and bathroom heater with pipe-based cold water recovery, makes it possible to:

[0022] The internal hot water conduit is made of an elastomer material, allowing its walls to expand and contract under water pressure. This allows for the water tank I formed inside the internal hot water conduit and the water tank II formed in the space between the internal hot water conduit and the inner tube to alternate between them, squeezing each other's cold water. Alternating between water flow modes I and II enables non-contact discharge and reuse of cold water, solving the problem of water heaters being installed some distance from the water faucet, resulting in long wait times and wasted water resources. Furthermore, because hot and cold water are alternately switched in direct contact with each other, heat is transferred between the hot and cold water. In the case of long-distance transmission, such as on a balcony, a large amount of hot water transfers heat to the cold water, avoiding the problem of hot water cooling resulting in long wait times and wasted water resources.

[0023] The outer tube, inner tube, and internal hot water conduit are interleaved to form a single pipe, and by using water pressure to expand and contract the wall of the internal hot water conduit, water flow mode I and water flow mode II can be used alternately.In the case of a single pipe, non-contact discharge of cold water for reuse can be achieved with a pipe of any length, which ensures the amount of treated water while reducing the amount of construction work.In addition, because there is no need to increase the amount of auxiliary piping, the amount of piping used can be reduced, and increases in piping usage and maintenance costs can be avoided.

[0024] By controlling the strength of the current, different magnetic adsorption forces are generated on both sides of the arc-shaped storage plate. After the force balance with the elastic spacer is reached, the elasticity of the arc-shaped grid plate and the penetration degree within the slot are adjusted, thereby realizing the expansion and contraction adjustment of the radius of the self-pipe and the adjustment of different water volumes. [Brief explanation of the drawings]

[0025] The present invention will now be further described with reference to the accompanying drawings and examples. [Figure 1] This is a structural diagram of the energy-saving kitchen and bathroom heater of the present invention, which can recover cold water within the pipes. [Figure 2] FIG. 1 is a front view of the present invention. [Figure 3] FIG. 2 is a structural diagram of the pipe assembly in FIG. 1. [Figure 4] FIG. 2 is a structural diagram of an internal hot water conduit module according to the present invention. [Figure 5] FIG. 5 is an enlarged structural view of A in FIG. 4. [Figure 6] FIG. 5 is an enlarged structural view of B in FIG. [Figure 7] 5 is an end view of the internal hot water conduit module body in FIG. 4. [Figure 8] 8 is a diagram illustrating that the internal hot water conduit combination body in FIG. 7 conducts water through the lumen between the inner pipe and the internal hot water conduit. [Figure 9] 8 is a diagram illustrating the internal hot water conduit combination body in FIG. 7 conducting water through the inner tube and the internal hot water conduit. [Figure 10] FIG. 10 is a structural diagram of a cross section taken along the center line in the column direction of the internal hot water conduit module in FIG. 9. [Figure 11] FIG. 9 is a structural diagram of a cross section taken along the center line in the column direction of the internal hot water pipe module in FIG. 8. [Figure 12] FIG. 8 is a structural diagram of the inner tube in FIG. 7. [Figure 13] FIG. 13 is an enlarged structural view of C in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0026] In order to make the objectives, technical solutions and advantages of the present invention clearer and easier to understand, the present invention will be described in more detail in conjunction with specific embodiments. It should be understood that the specific embodiments described herein are only for the purpose of illustrating the present invention and are not intended to limit the present invention. Based on the embodiments in the present invention, all other embodiments that can be obtained by those skilled in the art without any creative efforts fall within the protection scope of the present invention.

[0027] In an embodiment of the present invention, see Figures 1-3, an energy-saving kitchen / bathroom heater with in-pipe cold water recovery includes a piping assembly 200 retrofitted to a water heater main body 100, and the pipe assembly 200 includes a cold water pipe 210, a gas input pipe 220, and a hot water output pipe 240.

[0028] From the above, the following can be understood: gas is introduced as fuel into the water heater body 100 through the gas import pipe 220, and is burned to release heat, thereby heating the cold water introduced from the cold water pipe 210, and after the cold water becomes hot water, the hot water is discharged from the hot water export pipe 240.

[0029] It is necessary to explain that the pipe assembly 200 inside the body of the water heater 100, as well as the parts not shown, are conventional technologies (e.g., faucet assembly, main burner, small flame burner, heat exchanger, safety device, etc.), the detailed structure of which is publicly known in existing literature and magazines, and can also be purchased directly on the market, and the configuration of parts and components can also be purchased on the market, which are not protected by the present invention and are not described in detail in this document or depicted in the accompanying drawings.

[0030] Please refer to Figures 2-4 and 7-11. A hot water combination pipe 250 is installed in the hot water export pipe 240, and the hot water combination pipe 250 is attached to the water heater main body 100 by a hot water connection pipe 260. The hot water combination pipe 250 is composed of a metal hose and an internal hot water conduit module 270 inserted into the metal hose.

[0031] From the above, it can be seen that after hot water is heated in the water heater main body 100, it is exported through the hot water connection pipe 260 and then exported after flowing through the hot water combination pipe 250. While flowing through the hot water combination pipe 250, non-contact discharge of the previous cold water can be achieved. Even when water is transported long distances, the hot water transfers heat to the cold water, preventing a large amount of hot water from cooling, resulting in a long wait time for hot water and wasting cold water resources. Before hot water is used, the internal hot water conduit module 270 adjusts by expanding or contracting its own pipe radius to contract its horizontal radius and empty the remaining cold water inside. After hot water is used, the internal hot water conduit module 270 expands or contracts its own horizontal radius to expand its horizontal radius and return to its original state.

[0032] It should be noted that the present invention does not limit the length of the hot water combination pipe 250, and the length of the hot water combination pipe 250 can be flexibly manufactured according to the actual situation.

[0033] The internal hot water pipe module 270 includes a water inlet pipe end, an internal hot water pipe module body 272, and a water outlet pipe end 273, and the inlet pipe header 271 and the water outlet pipe end 273 are attached to both ends of the internal hot water pipe module body 272, respectively.

[0034] The internal hot water conduit module body 272 includes an outer tube 2721 (the outer tube 2721 is a gooseneck), an inner tube 2722 is installed inside the outer tube 2721, and an internal hot water conduit 2723 is inserted inside the inner tube 2722, the inner tube 2722 is made of an elastomer material, and its inner and outer surfaces are covered with an insulating material layer; the internal space of the internal hot water conduit 2723 forms water tank I, and the space between the inner tube 2722 and the internal hot water conduit 2723 forms water tank II.

[0035] It is necessary to explain in more detail that the specific material of the inner hot water conduit 2723 made of elastomer material can be rubber, TPE hose material, silicone, etc., all of which are mentioned in the prior art, and there is no particular limitation on the specific material as long as it can satisfy the elasticity of the inner hot water conduit 2723. At the same time, it can be purchased on the market, and there are related descriptions in corresponding magazines and literature, which are also not included in the protection scope of the present invention and will not be described in detail herein.

[0036] The insulating layer can be made of any of the above-mentioned materials in the prior art, such as foam, fiber, metal-plated polyester, polyimide film, etc., and the specific material is not particularly limited as long as it can meet the requirements for thermal insulation. At the same time, it can be purchased on the market, and there are related descriptions in corresponding magazines and literature, which are not included in the scope of protection of the present invention and will not be described in detail in this document.

[0037] After the hot water enters the internal hot water conduit module 270, the end of the water-inlet pipe 271 distributes the hot water to the internal hot water conduit, and the hot water flows into the water tank I. The water pressure pushes the elastic wall of the internal hot water conduit 2723 outward, compressing the water tank II, discharging cold water from the water tank II, discharging cold water from the inner tube 2722 and the internal hot water conduit 2723, and pressing the walls of the inner tube 2722 and the internal hot water conduit 2723 together, emptying the cold water from the water tank II, and completing the non-contact discharge and reuse of cold water in the water flow mode I (see Figures 9 and 10 for this state);

[0038] The water-filled pipe tip 271 distributes hot water between the inner tube 2722 and the internal hot water conduit 2723, passing the hot water through water tank II. The water pressure pushes the elastic walls of the internal hot water conduit 2723 inward, compressing water tank I, discharging cold water from water tank I and forcing the walls of the internal hot water conduit 2723 together, emptying the cold water from water tank I and completing the non-contact discharge and reuse of cold water in water flow mode II. (See Figures 8 and 11 for this state.)

[0039] From the above, it can be seen that gas is introduced as fuel into the water heater body 100 through the gas inlet pipe 220, and is burned to release heat, thereby heating the cold water introduced from the cold water pipe 210. After the cold water becomes hot water, the hot water is discharged from the hot water outlet pipe 240. During this process, after the hot water enters the internal hot water conduit module 270, the tip of the water inlet pipe 271 distributes the hot water to the internal hot water conduit, and the hot water passes through the water tank I. The water pressure pushes the elastic wall of the internal hot water conduit 2723 outward, compressing the water tank II, and the cold water is discharged from the water tank II. The cold water is then discharged from the inner tube 2722 and the internal hot water conduit 2723. The water is discharged, pressing the walls of the inner tube 2722 and the internal hot water conduit 2723 together, emptying the cold water in water tank II and completing the non-contact discharge and reuse of cold water in water flow mode I; during the next use, the water-filled pipe tip 271 distributes hot water between the inner tube 2722 and the internal hot water conduit 2723, allowing the hot water to pass through water tank II, the water pressure presses the elastic walls of the internal hot water conduit 2723 inward, compressing water tank I, discharging cold water from water tank I and pressing the walls of the internal hot water conduit 2723 together, emptying the cold water in water tank I and completing the non-contact discharge and reuse of cold water in water flow mode II.

[0040] In summary, since the internal hot water conduit 2723 is made of an elastomer material, the wall of the internal hot water conduit 2723 can expand and contract under water pressure, and water tank I, formed in the internal space of the internal hot water conduit 2723, and water tank II, formed in the space between the internal hot water conduit 2723 and the inner tube 2722, can squeeze out each other's internal cold water as they switch between them; alternating between water flow mode I and water flow mode II achieves non-contact discharge and reuse of cold water, solving the problem of the water heater being installed some distance from the water faucet, resulting in long wait times for hot water and wasting water resources. In addition, because the hot water and cold water are alternately exchanged through direct contact, heat is transferred between the hot and cold water. In the case of long-distance transmission, such as on a balcony, a large amount of hot water will transfer heat to the cold water, thereby avoiding the problem of the hot water being cooled, resulting in long wait times for hot water and wasting water resources.

[0041] At the same time, the outer tube 2721, inner tube 2722, and internal hot water conduit 2723 are interposed to form a single pipe, and by using water pressure to expand and contract the wall of the internal hot water conduit 2723, water flow mode 1 and mode 2 can be alternately switched between. Therefore, in the case of a single pipe, non-contact discharge of cold water for reuse can be achieved with a pipe of any length, which ensures the amount of treated water while reducing the amount of construction work. In addition, since there is no need to increase the number of auxiliary pipes connected to the pipes, the amount of pipe usage can be reduced, and increases in pipe usage and maintenance costs can be avoided.

[0042] In an embodiment of the present invention, see Figures 4, 5 and 10, the inlet pipe head 271 includes a distribution pipe A2714 and a scheduling pipe A2711, and the distribution pipe A2714 is connected to a connecting pipe A2713 at the end remote from the internal hot water conduit module body 272, and the connecting pipe A2713 is connected to the hot water connecting pipe 260.

[0043] One end of the scheduling pipe A2711 is connected to the junction between the distribution pipe A2714 and the connection pipe A2713, and the other end is connected to an inner tube 2722, which is connected to the water tank II.

[0044] 5 and 10, the distribution pipe A2714 is connected to an internal hot water conduit 2723, and a solenoid valve A2715 is installed on the distribution pipe A2714 to turn on and off between the distribution pipe A2714 and the internal hot water conduit 2723.

[0045] The scheduling pipe A2711 is fitted with a stopcock A2712 for switching on and off between the connecting pipe A2713 and the water tank II;

[0046] From the above, it can be seen that gas is introduced as fuel into the water heater main body 100 through the gas inlet pipe 220, and is burned to release heat to heat the cold water introduced through the cold water pipe 210. After the cold water becomes hot, the hot water is discharged through the hot water outlet pipe 240. During this process, the hot water enters the inlet pipe head 271 of the internal hot water conduit module 270 and first enters the connecting pipe A2713. At this time, the valve A2712 is closed, the solenoid valve A2715 is opened, the distribution pipe A2714 and the internal hot water conduit 2723 are opened, and the connecting pipe A2713 and water tank II are closed, distributing the hot water into the internal hot water conduit 2723 and allowing the hot water to pass through water tank I. The water pressure pushes the elastic wall of the internal hot water conduit 2723 outward, compressing the water tank II and discharging cold water from the water tank II. The walls of the inner tube 2722 and the internal hot water conduit 2723 are squeezed together, emptying the cold water from the water tank II and completing the non-contact discharge and reuse of cold water in the water flow mode I. When the water is next used, hot water enters the inlet pipe head 271 of the internal hot water conduit module 270 and first enters the inside of the connecting pipe A2713. At this time, the tap A2712 is opened, the solenoid valve A2715 is closed, the distribution pipe A2714 and the internal hot water conduit 2723 are closed, and the connecting pipe A2713 and the water flow tank II are switched to the open state. The inlet pipe head 271 distributes hot water between the inner pipe 2722 and the internal hot water conduit 2723 through the scheduling pipe A2711, allowing the hot water to pass through the water tank II. The water pressure pushes the elastic wall of the internal hot water conduit 2723 inward, compressing the water tank I, discharging cold water from the water tank I, squeezing the wall of the internal hot water conduit 2723 and emptying the cold water in the water tank I, thus completing the non-contact discharge and reuse of cold water in the water flow mode II.

[0047] In an embodiment of the present invention, see Figures 4, 6 and 10, the outlet header 273 includes a scheduling pipe B2731 and a distribution pipe B2734, the distribution pipe B2734 is connected to a connecting pipe B2733 at the end remote from the internal hot water conduit module body 272, and the connecting pipe B2733 is connected to the hot water export pipe 240.

[0048] One end of the scheduling pipe B2731 is connected to the junction between the distribution pipe B2734 and the connection pipe B2733, and the other end is connected to the inner tube 2722, which is connected to the water tank II.

[0049] 6 and 10, the distribution pipe B2734 is connected to the internal hot water conduit 2723, and a solenoid valve B2735 is attached to the distribution pipe B2734 to turn on and off between the distribution pipe B2734 and the internal hot water conduit 2723.

[0050] A stopper B2732 is attached to the scheduling pipe B2731 to turn on and off the connection pipe B2733 and the water tank II.

[0051] From the above, it can be seen that hot water is discharged from hot water export pipe 240, and in the process, the hot water enters inlet pipe head 271 of internal hot water conduit module 270, first entering connecting pipe A2713. At this time, valve A2712 is closed, solenoid valve A2715 is opened, distribution pipe A2714 and internal hot water conduit 2723 are opened, connecting pipe A2713 and water tank II are switched to closed states, hot water is distributed to internal hot water conduit 2723, and hot water passes through water tank I. At this time, valve B2732 is closed, solenoid valve B2735 is opened, distribution pipe B2734 and internal hot water conduit 2723 are opened, connecting pipe B2733 and water tank II are switched to closed states, and hot water is introduced into hot water export pipe 240 through connecting pipe B2733 for use. During the process of passing hot water through water tank I, the water pressure pushes the elastic wall of the internal hot water conduit 2723 outward, compressing water tank II, discharging cold water from water tank II, squeezing the walls of the inner tube 2722 and the internal hot water conduit 2723 together to empty the cold water in water tank II, thereby completing the non-contact discharge and reuse of cold water in water flow mode I.

[0052] At the next use, hot water enters the inlet pipe head 271 of the internal hot water conduit module 270 and first flows into the connecting pipe A2713. At this time, the valve A2712 is opened, the solenoid valve A2715 is closed, the distribution pipe A2714 and the internal hot water conduit 2723 are closed, and the connecting pipe A2713 and the water tank II are opened. The inlet pipe head 271 distributes hot water between the inner pipe 2722 and the internal hot water conduit 2723 through the scheduling pipe A2711, and passes the hot water to the water tank II. At this time, the valve B2732 is opened, the solenoid valve B2735 is closed, the distribution pipe B2734 and the internal hot water conduit 2723 are closed, and the connecting pipe B2733 and the water tank II are opened. The hot water is introduced into the hot water export pipe 240 through the connecting pipe B2733 for use. During the process of passing hot water through the water tank I, the water pressure pushes the elastic wall of the internal hot water conduit 2723 inward, compressing the water tank I and discharging cold water from the water tank I, squeezing the wall of the internal hot water conduit 2723 and emptying the cold water in the water tank I, thereby completing the non-contact discharge and reuse of cold water in the water flow mode II.

[0053] In an embodiment of the present invention, referring to FIG. 6, a cold water recovery pipe module is installed in the internal hot water conduit module body 272, and this cold water recovery pipe module is used to discharge the cold water discharged from the inside of the internal hot water combination conduit body 272; the cold water recovery pipe module is connected to the cold water pipe 210 via the cold water circulation pipe 230, and the cold water pipe 210 is used to transfer the cold water to the cold water pipe 210 for reuse.

[0054] Referring to Figure 6, the cold water recovery pipe module includes an export pipe A2736 and an export pipe B2739, the export pipe A2736 is connected to the inner tube 2722 and connected to the water tank II, and the export pipe B2739 is connected to the internal hot water conduit 2723 and connected to the water tank I.

[0055] Referring to Figure 6, the export pipe A2736 and the export pipe B2739 are connected to a main pipe 2738 at the end away from the internal hot water conduit module body 272, and the main pipe 2738 is connected to the cold water return pipe 230 via a connecting pipe C2737.

[0056] Referring to FIG. 6, the export pipe A2736 and the export pipe B2739 are fitted with solenoid valves C.

[0057] From the above, it can be seen that gas is introduced as fuel into the water heater main body 100 through the gas inlet pipe 220, and is burned to release heat to heat the cold water introduced through the cold water pipe 210. After the cold water becomes hot, the hot water is discharged through the hot water outlet pipe 240. During this process, the hot water enters the inlet pipe head 271 of the internal hot water conduit module 270 and first enters the connecting pipe A2713. At this time, the valve A2712 is closed, the solenoid valve A2715 is opened, the distribution pipe A2714 and the internal hot water conduit 2723 are opened, and the connecting pipe A2713 and water tank II are closed, distributing the hot water into the internal hot water conduit 2723 and allowing the hot water to pass through water tank I. At this time, the valve B2732 is closed, the solenoid valve B2735 is opened, the distribution pipe B2734 and the internal hot water conduit 2723 are opened, the connecting pipe B2733 and the water tank II are switched to the closed state, and the hot water is introduced into the hot water export pipe 240 through the connecting pipe B2733 for use. In the process of passing the hot water through the water tank I, the elastic wall of the internal hot water conduit 2723 is pushed outward by the water pressure, the water tank II is compressed, and the cold water is discharged from the water tank II, and the solenoid valve C The cold water discharged from the water tank II flows into the export pipe A2736, and then flows through the main pipe 2738 and the connecting pipe B2739. C 2737 and enters the inside of the cold water circulation pipe 230 for reuse; the walls of the inner tube 2722 and the internal hot water conduit 2723 are squeezed together to empty the cold water in the water tank II, completing the non-contact discharge and reuse of the cold water in the water flow mode I.

[0058] At the next use, hot water enters the inlet pipe head 271 of the internal hot water conduit module 270 and first flows into the connecting pipe A2713. At this time, the valve A2712 is opened, the solenoid valve A2715 is closed, the distribution pipe A2714 and the internal hot water conduit 2723 are closed, and the connecting pipe A2713 and the water tank II are opened. The inlet pipe head 271 distributes the hot water between the inner pipe 2722 and the internal hot water conduit 2723 through the scheduling pipe A2711 and passes the hot water to the water tank II. At this time, the valve B2732 is opened, the solenoid valve B2735 is closed, the distribution pipe B2734 and the internal hot water conduit 2723 are closed, and the connecting pipe B2733 and the water tank II are opened. The hot water is introduced into the hot water export pipe 240 through the connecting pipe B2733 for use. During the process of passing hot water through the water tank I, the water pressure pushes the elastic wall of the internal hot water conduit 2723 inward, compressing the water tank I, and cold water is discharged from the water tank I, and the solenoid valve C The cold water discharged from the water tank I flows into the export pipe B2739, and then flows through the main pipe 2738 and the connecting pipe C 2737 and enters the inside of the cold water circulation pipe 230 for reuse; the wall of the internal hot water conduit 2723 is squeezed to empty the cold water in the water tank I, completing the non-contact discharge and reuse of the cold water in the water flow mode II.

[0059] In an embodiment of the present invention, see Figures 12 and 13, the inner tube 2722 is composed of a multi-unit inner tube and a multi-stage rubber hose, and the multi-unit inner tube and the multi-stage rubber hose are arranged in a cross shape, and the outer wall of the rubber hose is fixed inside the outer tube 2721.

[0060] The unit inner tube is composed of an outer telescopic tube 27222 and an inner elastic tube 27221 inserted into the inside of the outer telescopic tube 27222; the outer telescopic tube 27222 is composed of a plurality of arc-shaped storage plates 27223 and a plurality of arc-shaped grid plates 27224, and the plurality of arc-shaped storage plates 27223 and the plurality of arc-shaped grid plates 27224 are arranged in a circular cross pattern.

[0061] The arc-shaped storage plate 27223 has slots, and the arc-shaped grid plate 27224 is inserted into the slots by the elasticity of the elastic spacer; electromagnetic coils are attached to both sides of the surface of the arc-shaped storage plate 27223, and by controlling the strength of the current, different magnetic adsorption forces are generated on both sides of the arc-shaped storage plate 27223. After the force balance with the elastic spacer is reached, the elasticity of the arc-shaped grid plate 27224 and the penetration degree within the slots are adjusted, thereby realizing the expansion and contraction adjustment of the radius of the self-pipe.

[0062] From the above, it can be seen that when the amount of water needs to be adjusted, different magnetic adsorption forces are generated on both sides of the arc-shaped storage plate 27223 by controlling the strength of the current flow. After the force balance with the elastic spacer is reached, the elasticity of the arc-shaped grid 27224 plate and the penetration degree within the slot are adjusted, thereby realizing the expansion and contraction adjustment of the radius of the pipe itself and the adjustment of different water amounts.

[0063] It is also necessary to note that the length ratio of the unit inner tube to the rubber hose can be 5:1, 6:1, 7:1, 8:1, 9:1, or even 10:1, etc., and the number is not particularly limited as long as it satisfies that the length of the unit inner tube is longer than the length of the rubber hose. Here, it is preferable that the length ratio of the unit inner tube to the rubber tube is 8:1.

[0064] What needs to be explained in more detail is that the layout and arrangement of the electromagnetic coil, the wiring method for energizing the electromagnetic coil (for example, it can be inserted directly into the outer tube 2721), the control device for controlling the amount of power, etc. are prior art, and their detailed structures are publicly known in existing documents and magazines, and can also be purchased directly on the market, and the configuration of parts and components can also be purchased on the market or assembled from commercially available parts; these are not included in the protection scope of the present invention, and are not detailed in this document or depicted in the accompanying drawings.

[0065] The operating principle of the present invention is as follows: From the above, it can be seen that gas is introduced as fuel into the water heater main body 100 through the gas inlet pipe 220, and is burned to release heat to heat the cold water introduced through the cold water pipe 210. After the cold water becomes hot, the hot water is discharged through the hot water outlet pipe 240. During this process, the hot water enters the inlet pipe head 271 of the internal hot water conduit module 270 and first enters the connecting pipe A2713. At this time, the valve A2712 is closed, the solenoid valve A2715 is opened, the distribution pipe A2714 and the internal hot water conduit 2723 are opened, and the connecting pipe A2713 and water tank II are closed, distributing the hot water into the internal hot water conduit 2723 and allowing the hot water to pass through water tank I. At this time, the valve B2732 is closed, the solenoid valve B2735 is opened, the distribution pipe B2734 and the internal hot water conduit 2723 are opened, the connecting pipe B2733 and the water tank II are switched to the closed state, and the hot water is introduced into the hot water export pipe 240 through the connecting pipe B2733 for use. In the process of passing the hot water through the water tank I, the elastic wall of the internal hot water conduit 2723 is pushed outward by the water pressure, the water tank II is compressed, and the cold water is discharged from the water tank II, and the solenoid valve C The cold water discharged from the water tank II flows into the export pipe A2736, and then flows through the main pipe 2738 and the connecting pipe B2739. C 2737 into the cold water circulation pipe 230 for reuse; squeeze the inner tube 2722 and the inner hot water conduit 2723 together to empty the cold water in the water tank II, completing the non-contact discharge and reuse of cold water in the water flow mode I;

[0066] At the next use, hot water enters the inlet pipe head 271 of the internal hot water conduit module 270 and first flows into the connecting pipe A2713. At this time, the valve A2712 is opened, the solenoid valve A2715 is closed, the distribution pipe A2714 and the internal hot water conduit 2723 are closed, and the connecting pipe A2713 and the water tank II are opened. The inlet pipe head 271 distributes hot water between the inner pipe 2722 and the internal hot water conduit 2723 through the scheduling pipe A2711, and passes the hot water to the water tank II. At this time, the valve B2732 is opened, the solenoid valve B2735 is closed, the distribution pipe B2734 and the internal hot water conduit 2723 are closed, and the connecting pipe B2733 and the water tank II are opened. The hot water is introduced into the hot water export pipe 240 through the connecting pipe B2733 for use. During the process of passing hot water through the water tank I, the water pressure pushes the elastic wall of the internal hot water conduit 2723 inward, compressing the water tank I, and cold water is discharged from the water tank I, and the solenoid valve C The cold water discharged from the water tank I flows into the export pipe B2739, and then flows through the main pipe 2738 and the connecting pipe C 2737 into the cold water circulation pipe 230 for reuse; squeeze the wall of the internal hot water conduit 2723 to empty the cold water in the water tank I, completing the non-contact discharge and reuse of cold water in the water flow mode II; The internal hot water conduit 2723 is made of an elastomer material, so that the wall of the internal hot water conduit 2723 can expand and contract under water pressure. This allows the water tank I formed in the internal space of the internal hot water conduit 2723 and the water tank II formed in the space between the internal hot water conduit 2723 and the inner tube 2722 to squeeze out the cold water from each other during the process of switching between them. By alternately using water flow mode I and water flow mode II, non-contact discharge and reuse of cold water is achieved. This solves the problem of the water heater being installed a short distance from the water faucet, resulting in a long waiting time for hot water and wasting water resources. In addition, because the hot water and cold water are directly in contact with each other and alternately switched, heat is transferred between the contacting hot water and cold water, making it possible to transmit the hot water over long distances, such as on a balcony. In this case, a large amount of hot water transfers heat to the cold water, which avoids the problem of the cooling of the hot water prolonging the waiting time for the hot water and wasting water resources; the outer tube 2721, outer tube 2722 and internal hot water conduit 2723 are interposed to form a single pipe, and by using water pressure to expand and contract the wall of the internal hot water conduit 2723, water flow mode 1 and mode 2 can be alternately switched. In the case of a single pipe, a pipe of any length can be used to achieve non-contact discharge of cold water for reuse, which ensures the amount of treated water and reduces the amount of construction work. In addition, since there is no need to increase the number of auxiliary pipes, the amount of pipe usage can be reduced, and increases in pipe usage and maintenance costs can be avoided.

[0067] Finally, it should be noted that the above content is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiment, those skilled in the art may modify the technical solutions described in the above embodiment or make equivalent substitutions for some of its technical features. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention shall fall within the protection scope of the present invention. [Explanation of symbols]

[0068] 100, water heater body; 220, gas import pipe; 230, cold water circulation pipe; 240, hot water export pipe; 250, hot water combination pipe; 260, hot water connection pipe; 270, internal hot water conduit module; 271, water-filled pipe tip; 2711, scheduling pipe A; 2712, stopcock A; 2713, connecting pipe A; 2714, distribution pipe A; 2715, solenoid valve A; 272, internal hot water duct module body; 2721, outer tube; 2722, inner tube; 27221, inner elastic tube; 27222, outer elastic tube; 27223, arc-shaped storage plate; 27224, arc-shaped grid plate; 2723, internal hot water duct; 273, water outlet pipe tip; 2731, scheduling pipe B; 2732, tap B; 2733, connecting pipe B; 2734, distribution pipe B; 2735, solenoid valve B; 2736, export pipe A; 2737, connecting pipe C; 2738, main pipe; 2739, export pipe B.

Claims

1. The water heater includes a pipe assembly (200) retrofitted to a water heater body (100), the pipe assembly (200) including a cold water pipe (210), a gas inlet pipe (220), and a hot water outlet pipe (240), and is capable of recovering cold water within the pipes. A hot water combination pipe (250) is installed in the hot water export pipe (240), and the hot water combination pipe (250) is attached to the water heater body (100) by a hot water connection pipe (260), and the hot water combination pipe (250) is composed of a metal hose and an internal hot water conduit module (270) inserted into the metal hose; The internal hot water conduit module (270) includes a water inlet pipe end (271), an internal hot water conduit module body (272) and a water outlet pipe end (273), and the water inlet pipe end (271) and the water outlet pipe end (273) are respectively attached to both ends of the internal hot water conduit module body (272); The internal hot water conduit module body (272) includes an outer tube (2721), an inner tube (2722) installed inside the outer tube (2721), an internal hot water conduit (2723) inserted inside the inner tube (2722), the internal hot water conduit (2723) made of an elastomer material, the inner and outer surfaces of the internal hot water conduit (2723) covered with a heat insulating material layer, the internal space of the internal hot water conduit (2723) forms a water tank I, and the space between the inner tube (2722) and the internal hot water conduit (2723) forms a water tank II; After the hot water enters the internal hot water conduit module (270), the water-filled pipe tip (271) distributes the hot water to the internal hot water conduit (2723), and the hot water passes through the water tank I. The water pressure causes the elastic wall of the internal hot water conduit (2723) to expand outward, compressing the water tank II, and discharging cold water from the water tank II. The cold water is then discharged from the inner tube (2722) and the internal hot water conduit (2723). The elastic wall of the internal hot water conduit (2723) contacts the inner wall of the inner tube (2722), emptying the cold water from the water tank II, completing the non-contact discharge and reuse of cold water in the water flow mode I. The water-filled pipe tip (271) distributes hot water between the inner tube (2722) and the internal hot water conduit (2723), passes the hot water through the water tank II, and the water pressure causes the elastic wall of the internal hot water conduit (2723) to compress inward, compressing the water tank I and discharging cold water from the water tank I; and further compressing the elastic wall of the internal hot water conduit (2723) empties the cold water from the inside of the water tank I, completing the non-contact discharge and reuse of cold water in the water flow mode II. a cold water recovery pipe module is attached to the internal hot water conduit module body (272), and the cold water recovery pipe module is used to discharge cold water discharged from the inside of the internal hot water conduit module body; The cold water recovery pipe module is connected to the cold water pipe (210) through the cold water circulation pipe (230), and the cold water recovery pipe module is used to transfer the cold water to the cold water pipe (210) for reuse; The cold water recovery pipe module includes an export pipe A (2736) and an export pipe B (2739), and the export pipe A (2736) is connected to the inner tube (2722) and connected to the water tank II; An energy-saving heater for kitchens and bathrooms capable of recovering cold water within the pipe, characterized in that the export pipe B (2739) is connected to the internal hot water conduit (2723) and also to the water tank I.

2. The water-filled pipe end (271) includes a distribution pipe A (2714) and a scheduling pipe A (2711), and the distribution pipe A (2714) is connected at its end away from the connection with the internal hot water conduit module body (272) to a connection pipe A (2713), and the connection pipe A (2713) is connected to the hot water connection pipe A (260); An energy-saving kitchen / bathroom heater capable of recovering cold water within a pipe as described in claim 1, characterized in that one end of the scheduling pipe A (2711) is connected to the connection between the distribution pipe A (2714) and the connecting pipe A (2713), and the other end is connected to the inner tube (2722) and connected to the water tank II.

3. The distribution pipe A (2714) is connected to the internal hot water conduit (2723), and a solenoid valve A (2715) is attached to the distribution pipe A (2714) to turn on and off between the distribution pipe A (2714) and the internal hot water conduit (2723), An energy-saving kitchen / bathroom heater capable of recovering cold water within the pipes, as described in claim 2, characterized in that a stopper A (2712) for turning on / off the connection between the connecting pipe A (2713) and the water tank II is attached to the scheduling pipe A (2711).

4. The water inlet pipe end (273) includes a scheduling pipe B (2731) and a distribution pipe B (2734), and the distribution pipe B (2734) is connected to a connecting pipe B (2733) at the end away from the internal hot water conduit module body (272), and the connecting pipe B (2733) is connected to the hot water export pipe (240); An energy-saving kitchen / bathroom heater capable of recovering cold water within a pipe as described in claim 1, characterized in that one end of the scheduling pipe B (2731) is connected to the connection between the distribution pipe B (2734) and the connecting pipe B (2733), and the other end is connected to the inner tube (2722) and then to the water tank II.

5. The distribution pipe B (2734) is connected to the internal hot water conduit (2723), and a solenoid valve B (2735) is attached to the distribution pipe B (2734) to turn on and off between the distribution pipe B (2734) and the internal hot water conduit (2723), An energy-saving kitchen / bathroom heater capable of recovering cold water within a pipe as described in claim 4, characterized in that a plug B (2732) for turning on and off the connection between the connecting pipe B (2733) and the water tank II is attached to the scheduling pipe B (2731).

6. An energy-saving kitchen / bathroom heater capable of recovering cold water within pipes as described in claim 1, characterized in that the export pipe A (2736) and the export pipe B (2739) are connected to a main pipe (2738) at their ends away from the internal hot water conduit module body (272), and the main pipe (2738) is connected to a cold water return pipe (230) via a connecting pipe C (2737).

7. An energy-saving kitchen / bathroom heater capable of recovering cold water within pipes, as described in claim 6, characterized in that both the export pipe A (2736) and the export pipe B (2739) are equipped with solenoid valves C.

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