Building drainage heat energy utilization and recovery device

Abstract

The building drainage heat energy utilization and recovery device comprises a hot water pipe, a cold water cylinder and a thermoelectric power generation piece, the hot water pipe penetrates through the interior of the cold water cylinder, and connecting assemblies are arranged at the bottom of the side face of the cold water cylinder and the side face of the bottom end of the hot water pipe; the thermoelectric power generation piece comprises a cold electrode end and a hot electrode end, the cold electrode end and the hot electrode end are inserted into the two connecting assemblies respectively, the cold electrode end extends into the cold water cylinder and makes contact with cold water, and the hot electrode end extends into the hot water pipe. The utility model has the advantage of high utilization rate of heat energy in hot water.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of building heat energy utilization especially relates to a building drainage heat energy utilization recovery device. BACKGROUND

[0002] In daily life, such as bathing, cooking, a large amount of hot water will be used, and the used hot water is generally directly discharged into the sewer, and the heat energy in the hot water cannot be recycled, causing waste of heat energy.

[0003] The Chinese patent with the application date of 2022-03-18 and the publication number of CN218041239U discloses a building drainage heat energy utilization recovery system, which comprises a conversion base, a water flow channel is formed on the inner side of the conversion base so that the hot water discharged in the hot water discharge pipeline can flow through the water flow channel after the conversion base is connected to the hot water discharge pipeline; a heat dissipation unit connected with the conversion base; and a thermoelectric power generation sheet located between the conversion base and the heat dissipation unit. The building drainage heat energy utilization recovery system provided by the present application has a simple and reasonable structure, is convenient to install and use, can effectively recycle the residual heat energy of the hot water discharged into the pipeline, the system is convenient to install and has little influence on the original hot water discharge system, and is beneficial to modification in the original hot water discharge system. It is worth popularizing and using on a large scale.

[0004] In the technical scheme, the hot water enters the conversion base from the hot water discharge pipeline, the hot water stays in the conversion base for a short time, the temperature difference between the motors of the thermoelectric power generation sheet is generated for a short time, and thus the heat energy utilization rate of the hot water is low, which can be further improved. SUMMARY

[0005] In order to solve the problems in the background art, the utility model provides a building drainage heat energy utilization recovery device.

[0006] A building drainage heat energy utilization recovery device, comprising a hot water pipe, a cold water cylinder and a thermoelectric power generation sheet, the hot water pipe passes through the inside of the cold water cylinder, and the bottom side of the cold water cylinder and the side of the bottom end of the hot water pipe are both provided with a connecting assembly; the thermoelectric power generation sheet comprises a cold pole end and a hot pole end, the cold pole end and the hot pole end are respectively inserted into the inside of two groups of connecting assemblies, the cold pole end extends to the inside of the cold water cylinder and contacts with cold water, and the hot pole end extends to the inside of the hot water pipe.

[0007] Based on the above, a spiral heat exchange part is arranged in the middle of the hot water pipe, and the spiral heat exchange part is located in the inside of the cold water cylinder; a hopper is welded to the top end of the hot water pipe, a hollow plate is arranged at the top of the hopper, a filter screen is fixedly installed at the bottom of the hollow plate, and the filter screen is inserted into the hopper.

[0008] Based on the above, a water supply pipe is fixedly installed on the top of the cold water cylinder, a drain pipe is fixedly installed on the upper side of the cold water cylinder, and the other end of the drain pipe is lower than the bottom end of the cold water cylinder.

[0009] Based on the above, the connecting assembly includes a fixing tube, a docking ring and a rubber ring. One end of the fixing tube is connected to the hot water pipe or the cold water cylinder, and the other end of the fixing tube is integrally formed with an annular flange. The annular flange, the docking ring and the rubber ring are all penetrated by mounting holes. The mounting holes are used to insert bolts. The annular flange and the docking ring are connected by bolts, and the annular flange and the docking ring are respectively clamped on both sides of the rubber ring.

[0010] Based on the above, insulating rings are fixedly installed on the surfaces of the cold extreme end and the hot extreme end. The cold extreme end and the hot extreme end pass through the centers of the two sets of docking rings respectively, and the insulating rings seal the middle of the docking rings.

[0011] Based on the above, the outside of the cold water cylinder is covered with thermal insulation cotton.

[0012] The present invention has substantial features and progress compared to the prior art. Specifically, the present invention extends the cold extreme point and the hot extreme point to the inside of the hot water pipe and the cold water cylinder respectively. When hot water flows through the hot water pipe, the heat is transferred to the hot water in the cold water cylinder, thereby generating a temperature difference between the cold extreme point and the hot extreme point during and after the hot water is discharged, thereby generating electricity. The present invention has the advantage of high utilization rate of thermal energy in hot water. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural diagram of the utility model.

[0014] Figure 2 It is a schematic diagram of the three-dimensional cutaway structure of the present utility model.

[0015] Figure 3 It is a schematic diagram of the main cross-sectional structure of the utility model.

[0016] Figure 4 It is a three-dimensional structural diagram of the connection component of the utility model.

[0017] Explanation of the reference numerals: 100, hot water pipe; 200, cold water cylinder; 300, connecting assembly; 400, thermoelectric power generation sheet; 500, thermal insulation cotton; 101, spiral heat exchange part; 102, funnel; 103, hollow plate; 104, filter screen; 201, water supply pipe; 202, drain pipe; 301, fixing pipe; 302, annular flange; 303, docking ring; 304, rubber ring; 401, cold end; 402, hot end; 403, insulating ring. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] like Figures 1-4 As shown, a device for utilizing and recovering heat from building drainage water includes a hot water pipe 100, a cold water cylinder 200, and a thermoelectric generator 400. The hot water pipe 100 passes through the interior of the cold water cylinder 200, which contains cold water. As hot water passes through the hot water pipe 100, it transfers heat to the interior of the cold water cylinder 200, raising the temperature of the cold water therein. Connecting assemblies 300 are provided on the bottom side of the cold water cylinder 200 and the bottom side of the hot water pipe 100. The thermoelectric generator 400 includes a cold end 401 and a hot end 402, which are respectively inserted into two sets of connecting assemblies 300. The cold end 401 extends into the interior of the cold water cylinder 200 and contacts the cold water, while the hot end 402 extends into the interior of the hot water pipe 100. After hot water passes through the hot water pipe 100 , the hot end 402 contacts the hot water, while the cold end 401 contacts the cold water, thereby generating a temperature difference between the cold end 401 and the hot end 402 , and generating electricity through the thermoelectric power generation sheet 400 .

[0020] The hot water transfers heat to the cold water in the cold water cylinder 200. The outside of the cold water cylinder 200 is covered with thermal insulation cotton 500 to insulate the cold water inside the cold water cylinder 200 and keep the cold water at an elevated temperature. After the hot water is discharged from the hot water pipe 100, the hot end 402 comes into contact with the room temperature air inside the hot water pipe 100, and the cold end 401 comes into contact with the cold water inside the cold water cylinder 200, generating a temperature difference again and allowing the thermoelectric generator 400 to continue generating electricity.

[0021] Thermoelectric generator 400 is connected to a battery, storing electrical energy within the battery. In the first phase, when hot end 402 is in contact with hot water, its temperature is higher than that of cold end 401. In the second phase, when hot end 402 is in contact with ambient air, its temperature is lower than that of cold end 401. Consequently, the polarity of the output voltage in these two phases is opposite. Therefore, a rectifier bridge is installed in the circuit between thermoelectric generator 400 and the battery to ensure proper energy storage within the battery.

[0022] During use, a spiral heat exchange unit 101 is installed in the middle of the hot water pipe 100 and is located inside the cold water cylinder 200. This prolongs the time it takes for hot water to pass through the middle of the hot water pipe 100 and increases the amount of heat transferred to the cold water cylinder 200. A funnel 102 is welded to the top of the hot water pipe 100. A hollow plate 103 is installed on top of the funnel 102. A filter 104 is fixed to the bottom of the hollow plate 103 and inserted into the funnel 102. The filtering effect of the hollow plate 103 and filter 104 prevents solid impurities such as hair and dust from passing through the spiral heat exchange unit 101 and causing blockage.

[0023] Specifically, a water supply pipe 201 is fixedly mounted on the top of the cold water drum 200, and a drain pipe 202 is fixedly mounted on the upper side of the cold water drum 200. The other end of the drain pipe 202 is lower than the bottom of the cold water drum 200. The water supply pipe 201 can be connected to a sink to replenish cold water into the cold water drum 200. The high position of the top of the drain pipe 202 ensures that a certain amount of water is maintained inside the cold water drum 200.

[0024] The connection assembly 300 includes a fixed tube 301, a docking ring 303, and a rubber ring 304. One end of the fixed tube 301 is connected to the hot water pipe 100 or the cold water cylinder 200. The other end of the fixed tube 301 is integrally formed with an annular flange 302. The annular flange 302, docking ring 303, and rubber ring 304 all have mounting holes through them for inserting bolts. The annular flange 302 and docking ring 303 are connected by bolts and clamped on either side of the rubber ring 304. Removing the bolts facilitates replacement of the thermoelectric generator 400.

[0025] In practice, insulating rings 403 are fixedly mounted on the surfaces of both cold end 401 and hot end 402. Cold end 401 and hot end 402 pass through the centers of two sets of docking rings 303, respectively. Insulating rings 403 seal the middle of docking rings 303, thereby preventing water leakage from the connection assembly 300. Insulating rings 403 also provide insulation, preventing hot end 402 or cold end 401 from connecting to other conductive structures.

[0026] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A building drainage heat energy recovery device, characterized by: It includes a hot water pipe, a cold water cylinder and a thermoelectric power generation sheet. The hot water pipe passes through the inside of the cold water cylinder. The bottom of the side of the cold water cylinder and the bottom side of the hot water pipe are both provided with connecting components. The thermoelectric power generation sheet includes a cold extreme end and a hot extreme end, which are respectively plugged into two sets of connecting components. The cold extreme end extends into the cold water cylinder and contacts the cold water, and the hot extreme end extends into the hot water pipe.

2. The building drainage heat energy recovery device according to claim 1, characterized in that: A spiral heat exchange portion is provided in the middle of the hot water pipe, and the spiral heat exchange portion is located inside the cold water cylinder; A funnel is welded to the top of the hot water pipe, a hollow plate is provided on the top of the funnel, a filter is fixedly installed on the bottom of the hollow plate, and the filter is plugged into the funnel.

3. The building drainage heat energy recovery device according to claim 1, characterized in that: A water supply pipe is fixedly installed on the top of the cold water cylinder, and a drainage pipe is fixedly installed on the upper side of the cold water cylinder, and the other end of the drainage pipe is lower than the bottom end of the cold water cylinder.

4. The building drainage heat energy recovery device according to claim 1, characterized in that: The connecting assembly includes a fixing tube, a docking ring and a rubber ring. One end of the fixing tube is connected to the hot water pipe or the cold water cylinder. The other end of the fixing tube is integrally formed with an annular flange. The annular flange, the docking ring and the rubber ring are all penetrated by mounting holes. The mounting holes are used to insert bolts. The annular flange and the docking ring are connected by bolts. The annular flange and the docking ring are respectively clamped on both sides of the rubber ring.

5. The building drainage heat energy recovery device according to claim 4, characterized in that: Insulating rings are fixedly mounted on the surfaces of the cold extreme end and the hot extreme end. The cold extreme end and the hot extreme end pass through the centers of the two groups of docking rings respectively. The insulating rings seal the middle of the docking rings.

6. The building drainage heat energy recovery device according to claim 1, characterized in that: The outside of the cold water cylinder is covered with thermal insulation cotton.

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