Waste heat recovery device of hot water system

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By designing spiral pipes and support pad structures in the hot water system, using spiral pipes to wrap hot water pipes to exchange heat and reduce friction, the problems of heat dissipation and insulation layer of traditional hot water systems are solved, and efficient recovery and insulation of waste heat is achieved The long life of the layer.

CN222298167UActive Publication Date: 2025-01-03HENAN WANHE ELECTRIC TECH CO LTD

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Patent Information

Application Number: CN202420995832.0
Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner
Filing Date: 2024-05-09
Publication Date: 2025-01-03
Estimated Expiration: 2034-05-09

AI Technical Summary

Technical Problem

During the transmission process, traditional hot water systems cause a large amount of heat loss due to pipe heat dissipation, and the insulation layer and the pipeline are severely rubbed, resulting in wear and reducing the insulation effect.

Method used

A waste heat recovery device for hot water system is designed, including hot water pipes and cladding pipes, the outer wall of the hot water pipe is connected to the spiral pipe, the spiral pipe is connected to the support pad, the support pad is filled with shock absorbing springs and asbestos-free, and through the circulation pump Inject clean water into the spiral tube to wrap the hot water tube for heat exchange and reduce friction and noise through shock absorbing springs and silence holes.

Benefits of technology

Effectively collect the waste heat from the hot water pipe for secondary utilization, extend the service life of the insulation layer, improve heating efficiency and reduce noise and temperature loss.

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Abstract

The utility model belongs to the technical field of waste heat recovery devices, and provides a hot water system waste heat recovery device which comprises a hot water system connected with a conveying pipe. The conveying pipe comprises a hot water pipe and a wrapping pipe, the wrapping pipe is connected to the outer side of the hot water pipe in a sleeving mode, and a gap is reserved between the wrapping pipe and the hot water pipe; the outer wall of the hot water pipe is sleeved with a spiral pipe, the spiral pipe is arranged in the extending direction of the hot water pipe, and supporting pads are symmetrically arranged on the outer wall of the spiral pipe. A circulating pump is arranged on the left side of the hot water system and communicates with the spiral pipe, and the other side of the circulating pump is connected with a water tank. Clear water in the spiral pipe is heated through waste heat of the hot water pipe, and the heated clear water is pumped out under the action of the circulating pump for secondary utilization; the diameter of the spiral pipes is far smaller than that of the hot water pipe, so that the heating efficiency is far higher than that of the hot water pipe, and waste heat of the hot water pipe can be collected as much as possible for secondary utilization through the arranged spiral pipes.

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Description

Technical Field

[0001] The utility model relates to the technical field of waste heat recovery devices, in particular to a waste heat recovery device for a hot water system. Background Art

[0002] The hot water heating system is a heating system that uses water as a heat medium; it is widely used in residential and public buildings and industrial plant buildings; a large amount of hot water is required in certain production links of the factory, so a hot water system is necessary; however, the hot water system will lose a lot of heat due to the natural heat dissipation of the pipes during the transmission process. If the waste heat can be effectively collected at the end of the hot water system, the heat loss can be reduced, and the energy can be reused at the same time; however, traditional hot water pipes only have insulation function and cannot collect waste heat. In addition, the friction between the insulation layer and the pipe is relatively serious. After long-term use, the insulation layer is severely worn, which also reduces the insulation effect accordingly. For this reason, we proposed a waste heat recovery device for a hot water system. Utility Model Content

[0003] The purpose of the utility model is to provide a waste heat recovery device for a hot water system to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a waste heat recovery device for a hot water system, comprising a hot water system, the hot water system being connected to a delivery pipe;

[0005] The delivery pipe includes a hot water pipe and a cladding pipe, wherein the cladding pipe is sleeved on the outside of the hot water pipe, and a gap is reserved between the cladding pipe and the hot water pipe;

[0006] A spiral tube is sleeved on the outer wall of the hot water pipe, the spiral tube is arranged along the extension direction of the hot water pipe, and support pads are symmetrically arranged on the outer wall of the spiral tube;

[0007] A circulation pump is arranged on the left side of the hot water system, the circulation pump is connected to the spiral pipe, and the other side of the circulation pump is connected to a water tank;

[0008] The inner cavity of the support pad begins to have a filling cavity, and one end of the support pad close to the spiral tube is a fixed gasket, the fixed gasket is fixedly installed with the spiral tube, and the fixed gasket is movably inserted in the inner cavity of the support pad.

[0009] Preferably, shock-absorbing springs are arranged equidistantly in the filling cavity, and two ends of the shock-absorbing springs are respectively abutted against the inner walls of the fixing gasket and the supporting pad.

[0010] Preferably, a heat-insulating layer is provided on one side of the cladding pipe close to the hot water pipe; four support pads are provided, and the other end of the support pad abuts against the inner wall of the cladding pipe.

[0011] Preferably, the filling cavity of the support pad is provided with asbestos-free material, and silencer holes are provided on both the left and right sides of the support pad, and the silencer holes on either side include two upper and lower holes, and the inner sides of the silencer holes abut against the side walls of the shock-absorbing spring.

[0012] Preferably, a suction cup is provided on one side of the support pad close to the covering tube, and a suction cup end is provided on one end of the suction cup close to the support pad; the suction cup is adsorbed on the inner wall of the covering tube; and the asbestos-free wrap is wrapped around the shock-absorbing spring.

[0013] Preferably, the suction cup end is provided with a thread and is screwed inwardly onto the support pad, but a blocking plate is provided between the suction cup end and the shock absorbing spring.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] When the water supply of the hot water system of this scheme is about to end, the circulation pump is started, and the clean water is injected into the spiral tube by the circulation pump. As the spiral tube conveys the clean water, it is wound around the hot water pipe. The spiral tube is a copper tube with good thermal conductivity, which can complete the heat exchange with the hot water pipe. The clean water in the spiral tube is heated by the residual heat of the hot water pipe, and the heated clean water is pumped out by the circulation pump for secondary use. The diameter of the spiral tube is much smaller than that of the hot water pipe, so the heating efficiency is much higher than that of the hot water pipe. The spiral tube can collect as much residual heat as possible from the hot water pipe for secondary use.

[0016] A shock-absorbing spring is arranged in the support pad, and the inner cavity of the support pad is filled with asbestos-free material, which has the characteristics of sound absorption, heat resistance and wear resistance. When the spiral tube vibrates, the shock-absorbing spring contracts under force, and the end of the support pad close to the spiral tube is movably plugged in. When the shock-absorbing spring contracts, the front end of the support pad contracts inward synchronously to absorb the force of the spiral tube. After losing the force, it returns to its initial state under the action of the shock-absorbing spring, thereby reducing the wear of the spiral tube or the hot water pipe on the covering pipe and extending the service life of the insulation layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is the front view of the utility model;

[0018] Figure 2 This is a cross-sectional view of the delivery pipe of the utility model;

[0019] Figure 3 This is a schematic diagram of the installation of the spiral tube of the utility model;

[0020] Figure 4 This is a schematic diagram of the support pad of the utility model;

[0021] Figure 5 This is a cross-sectional view of the support pad of the utility model.

[0022] In the figure: 1 hot water system; 2 delivery pipe; 3 circulation pump; 4 covering pipe; 5 hot water pipe; 6 spiral pipe; 7 support pad; 8 suction cup; 9 silencer hole; 10 asbestos-free; 11 suction cup end; 12 shock-absorbing spring. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0025] Example:

[0026] See also Figure 1-5 , the utility model provides a technical solution of a waste heat recovery device for a hot water system: comprising a hot water system 1, to which a delivery pipe 2 is connected;

[0027] The delivery pipe 2 includes a hot water pipe 5 and a cladding pipe 4. The cladding pipe 4 is sleeved on the outside of the hot water pipe 5. A gap is reserved between the cladding pipe 4 and the hot water pipe 5. A heat preservation layer is arranged on one side of the cladding pipe 4 close to the hot water pipe 5.

[0028] A spiral tube 6 is sleeved on the outer wall of the hot water pipe 5. The spiral tube 6 is arranged along the extension direction of the hot water pipe 5. The outer wall of the spiral tube 6 is symmetrically provided with support pads 7. Four support pads 7 are provided, and the other end of the support pad 7 abuts against the inner wall of the covering tube 4.

[0029] A circulation pump 3 is provided on the left side of the hot water system 1, the circulation pump 3 is connected to the spiral tube 6, and the other side of the circulation pump 3 is connected to the water tank;

[0030] The inner cavity of the support pad 7 begins to have a filling cavity, and one end of the support pad 7 close to the spiral tube 6 is a fixed gasket, the fixed gasket is fixedly installed with the spiral tube 6, and the fixed gasket is movably inserted in the inner cavity of the support pad 7;

[0031] The filling cavity is provided with equidistantly arranged shock absorbing springs 12, and the two ends of the shock absorbing springs 12 abut against the inner walls of the fixing pad and the supporting pad 7 respectively;

[0032] The filling cavity of the support pad 7 is provided with asbestos-free 10, and the left and right sides of the support pad 7 are provided with silencer holes 9, and the silencer holes 9 on either side include two upper and lower ones, and the inner side of the silencer holes 9 abuts against the side wall of the shock absorbing spring 12;

[0033] A suction cup 8 is provided on one side of the support pad 7 close to the covering tube 4, and a suction cup end 11 is provided on one end of the suction cup 8 close to the support pad 7. The suction cup end 11 is provided with a thread and is screwed inwardly on the support pad 7, but a blocking plate is provided between the suction cup end 11 and the shock absorbing spring 12; the suction cup 8 is adsorbed on the inner wall of the covering tube 4;

[0034] In this solution, when in use, the spiral tube 6 is sleeved on the hot water pipe 5, and the sleeve distance can be equal to the arrangement distance of the hot water pipe 5, or the heat loss of long-distance transportation can be collected; the cladding tube 4 is sleeved on the outside of the spiral tube 6, and a gap is reserved between the cladding tube 4 and the hot water pipe 5, and the spiral tube 6 is located in the gap. At the same time, a heat-insulating layer is provided on the side of the cladding tube 4 close to the hot water pipe 5, and a heat-resistant and heat-insulating material is built in, which can block the heat emitted from the hot water pipe 5, reduce the speed of temperature dissipation, and make the temperature still gather in the gap between the hot water pipe 5 and the cladding tube 4;

[0035] When the water supply of the hot water system 1 is nearly finished, the circulation pump 3 is started, and the clean water is injected into the spiral tube 6 by the circulation pump 3. As the spiral tube 6 conveys the clean water, it is wound around the hot water pipe 5. The spiral tube 6 is a copper tube with good thermal conductivity, and can complete the heat exchange with the hot water pipe 5. The clean water in the spiral tube 6 is heated by the residual heat of the hot water pipe 5, and the heated clean water is pumped out by the circulation pump 3 for secondary use.

[0036] It should be noted that the number of circulating pumps 3 can be increased according to actual needs, and electric pumps are mainly used. For example, if the pipeline on the hot water system 1 is blocked and the pipeline at that location is short, the sheathing pipe 4 can be added or not used, or the spiral pipe 6 at that location can be extended outside the pipeline, and the spiral pipe 6 at that location can be connected to other pipelines by adding an extension pipe, and one circulating pump 3 can also be used together;

[0037] The diameter of the spiral tube 6 is much smaller than that of the hot water pipe 5, so the heating efficiency is much higher than that of the hot water pipe 5. The arrangement of the spiral tube 6 can collect as much waste heat as possible from the hot water pipe 5 for secondary utilization;

[0038] At the same time, a support pad 7 is arranged on the outer wall of the spiral tube 6. When the spiral tube 6 is filled with water each time, the pipeline will shake, and the shaking will rub the inner wall of the cladding tube 4. Long-term and frequent shaking will wear away the inner wall of the insulation layer of the cladding tube 4, reducing the insulation efficiency. The setting of the support pad 7 can extend the service life of the cladding tube 4.

[0039] Specifically, a shock-absorbing spring 12 is arranged in the support pad 7, and the inner cavity of the support pad 7 is filled with asbestos-free 10, which has the characteristics of sound absorption, heat resistance and wear resistance; when the spiral tube 6 shakes, the shock-absorbing spring 12 is forced to shrink, and the end of the support pad 7 close to the spiral tube 6 is movably plugged. When the shock-absorbing spring 12 shrinks, the front end of the support pad 7 shrinks inward synchronously, absorbing the force of the spiral tube 6, and recovering to the initial state under the action of the shock-absorbing spring 12 after losing the force, thereby reducing the wear of the spiral tube 6 or the hot water pipe 5 on the sheathing pipe 4 and extending the service life of the insulation layer;

[0040] The muffler holes 9 are symmetrically arranged on the left and right sides of the support pad 7. When the shock-absorbing spring 12 generates a force, there will be a sound. The asbestos-free 10 and the muffler holes 9 can reduce the difference in the overflow sound, and at the same time, the temperature in the support pad 7 can also be reduced;

[0041] The silencer hole 9 is a corrugated hole opened obliquely inward. When the sound wave passes through the corrugated hole, sound wave diffraction, reflection and absorption will occur. This is the result of the interaction between the sound wave and the corrugated hole. Due to the sound pressure difference formed inside and outside the hole, the hole edge vibration is generated, and finally the sound wave energy is converted into mechanical energy and dissipated, so as to achieve the purpose of silencer, and work together with the asbestos-free 10 to reduce noise, which is very simple and practical.

[0042] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model, and any figure marks in the claims should not be regarded as limiting the claims involved.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hot water system waste heat recovery device, comprising a hot water system (1), wherein the hot water system (1) is connected to a delivery pipe (2), It is characterized by: The delivery pipe (2) comprises a hot water pipe (5) and a cladding pipe (4), wherein the cladding pipe (4) is sleeved on the outside of the hot water pipe (5), and a gap is reserved between the cladding pipe (4) and the hot water pipe (5); A spiral tube (6) is sleeved on the outer wall of the hot water pipe (5), the spiral tube (6) is arranged along the extension direction of the hot water pipe (5), and support pads (7) are symmetrically arranged on the outer wall of the spiral tube (6); A circulation pump (3) is arranged on the left side of the hot water system (1), the circulation pump (3) and the spiral tube (6) are in communication with each other, and the other side of the circulation pump (3) is connected to a water tank; The inner cavity of the support pad (7) begins to have a filling cavity, and one end of the support pad (7) close to the spiral tube (6) is a fixed gasket, the fixed gasket is fixedly installed with the spiral tube (6), and the fixed gasket is movably inserted in the inner cavity of the support pad (7).

2. A waste heat recovery device for a hot water system according to claim 1, characterized in that: The filling cavity is provided with equidistantly arranged shock absorbing springs (12), and the two ends of the shock absorbing springs (12) are respectively abutted against the inner walls of the fixing pad and the supporting pad (7).

3. A waste heat recovery device for a hot water system according to claim 1, characterized in that: A heat-insulating layer is provided on one side of the cladding tube (4) close to the hot water pipe (5); four support pads (7) are provided, and the other end of the support pads (7) abuts against the inner wall of the cladding tube (4).

4. A waste heat recovery device for a hot water system according to claim 1, characterized in that: The filling cavity of the support pad (7) is provided with asbestos-free material (10), and the left and right sides of the support pad (7) are provided with silencer holes (9), and the silencer holes (9) on either side include two upper and lower holes, and the inner side of the silencer holes (9) abuts against the side wall of the shock-absorbing spring (12).

5. A waste heat recovery device for a hot water system according to claim 4, characterized in that: A suction cup (8) is provided on one side of the support pad (7) close to the covering tube (4), and a suction cup end (11) is provided on one end of the suction cup (8) close to the support pad (7); the suction cup (8) is adsorbed on the inner wall of the covering tube (4); and the asbestos-free material (10) is wrapped around the circumference of the shock-absorbing spring (12).

6. A waste heat recovery device for a hot water system according to claim 5, characterized in that: The suction cup end (11) is provided with a thread and is screwed inwardly onto the support pad (7), but a blocking plate is provided between the suction cup end (11) and the shock absorbing spring (12).