Heat recovery tank

Abstract

The utility model discloses a heat recovery tank in the technical field of waste heat recovery devices, the heat recovery tank comprises a tank body, a heat exchange pipe is arranged in the tank body, the heat exchange pipe is provided with a water inlet and a water outlet, a wastewater inlet and a wastewater outlet are further formed in the two sides of the tank body, and the heat exchange pipe is located between the wastewater inlet and the wastewater outlet; the tank body is further fixedly provided with a first flow deflector and a second flow deflector which isolate the waste water inlet and the waste water outlet from the heat exchange pipe, the first flow deflector and the second flow deflector are each provided with a plurality of flow guide hole sets covering the heat exchange pipe, and each flow guide hole set comprises a plurality of flow guide holes arranged at intervals. According to the scheme, the heat exchange efficiency of tap water can be improved, and the purposes of sufficient heat recovery, high efficiency and energy conservation are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste heat recovery devices, in particular to a heat recovery tank. Background Art

[0002] Waste heat refers to the sensible heat and latent heat that has not been reasonably utilized in the original design of energy-consuming devices of industrial enterprises that have been put into operation due to limitations of historical, technological, and conceptual factors. It includes waste heat from high-temperature exhaust gas, waste heat from cooling media, waste heat from waste steam and waste water, waste heat from high-temperature products and slag, waste heat from chemical reactions, and waste heat from combustible exhaust gas, waste liquid, and waste materials.

[0003] As people's living standards improve, hot water is used more and more widely, such as water for washing vegetables in the kitchen, washing hands and feet in the bathroom, showers, washing machines, bathtubs, etc. In actual use, in order to meet the use requirements, water needs a lot of energy to be heated to the required temperature, but the actual effective heat energy is used less. For example, when people take a bath, taking Guizhou as an example, the tap water temperature is 2-5℃ in winter and 15-19℃ in summer, while the temperature of bath water is between 40-44℃, and the actual heat utilization rate of shower water is only 30%. More heat energy is discharged with domestic wastewater, wasting a lot of energy and increasing the greenhouse effect.

[0004] To this end, the inventor has previously applied for a heat recovery plate (application number 2021231059844), which includes a heat absorption plate and a heat absorption tube arranged inside the heat absorption plate. When the waste hot water passes through the heat absorption plate, the heat is indirectly transferred to the heat absorption tube. However, this indirect heat transfer method obviously reduces the heat transfer efficiency; and, when the amount of waste hot water is large, the waste hot water flows rapidly on the heat absorption plate and is discharged outward, resulting in a large amount of waste hot water that has not been exchanged being wasted, causing the heat exchange efficiency to decrease. Utility Model Content

[0005] The utility model aims to provide a heat recovery tank, so as to provide a heat recovery plate with higher heat exchange efficiency.

[0006] In order to achieve the above object, the utility model provides the following technical solutions:

[0007] A heat recovery tank comprises a tank body, wherein a heat exchange tube is arranged inside the tank body, wherein the heat exchange tube is provided with a water inlet and a water outlet, and wastewater inlet and wastewater outlet are also arranged on both sides of the tank body, wherein the heat exchange tube is located between the wastewater inlet and the wastewater outlet; the tank body is also fixedly provided with a first guide plate and a second guide plate which isolate the wastewater inlet and the wastewater outlet from the heat exchange tube, wherein the first guide plate and the second guide plate are both provided with a plurality of guide hole groups covering the heat exchange tube, and each guide hole group comprises a plurality of guide holes arranged at intervals.

[0008] The working principle and beneficial effects of the utility model:

[0009] In this solution, the heat exchange tube is located inside the tank body, and the heat exchange tube is provided with a water inlet and a water outlet, and the tap water to be heated is passed into the heat exchange tube through the water inlet.

[0010] Since the heat exchange tube is located between the wastewater inlet and the wastewater outlet, the waste hot water enters the tank body through the wastewater inlet, and the tank body is also fixedly provided with a first guide plate and a second guide plate that isolate the wastewater inlet and the wastewater outlet from the heat exchange tube. The first guide plate and the second guide plate are both provided with a guide hole group covering the heat exchange tube, and the guide hole group includes a plurality of guide holes arranged at intervals. Therefore, the first guide plate blocks the waste hot water entering from the wastewater inlet, and the waste hot water accumulates in the space between the first guide plate and the tank body, and then disperses and flows through the heat exchange tube through the plurality of guide holes, and then flows into the wastewater inlet through the plurality of guide holes on the second guide plate and is discharged outwardly. The heat of the waste hot water is transferred to the heat exchange tube, and the tap water flows outward through the outlet after being heated.

[0011] In this solution, the multiple guide holes of the first guide plate play a role in diverting the waste hot water, so that the waste hot water is evenly distributed and can cover the entire heat exchange tube, thereby increasing the heat exchange area, and the multiple guide holes of the second guide plate can slow down the speed at which the waste hot water is discharged outward, thereby extending the heat exchange time between the waste hot water and the heat exchange tube. Therefore, this solution can improve the heat exchange efficiency of tap water and achieve the purpose of full heat recovery, high efficiency and energy saving.

[0012] Furthermore, the bottom of the tank body is tilted downward toward the waste water outlet, so that the waste hot water in the tank body can be completely drained to prevent the waste hot water from being retained.

[0013] Furthermore, the tank body is provided with a fixed bracket, and the heat exchange tube is connected to the fixed bracket and is distributed in a serpentine shape. The serpentine shape can increase the heat exchange area with waste hot water and improve the heat exchange efficiency. The bracket fixes the serpentine heat exchange tube as a whole, which is convenient for the heat exchange tube and the bracket to be removed and cleaned together in the later stage. Moreover, the heat exchange tube does not deform, and there is no dead angle for cleaning, so that the high heat exchange efficiency is maintained for a long time.

[0014] Furthermore, the multiple guide holes of each guide hole group are evenly spaced, so that the waste hot water can be distributed more evenly.

[0015] Furthermore, the tank body is provided with a heat-insulating layer, which can slow down the speed of heat transfer to the outside and play a role in heat preservation.

[0016] Furthermore, the water inlet and the water outlet are coaxially rotatably connected with a movable nut. The external water pipe is provided with an external threaded nut used in conjunction with the movable nut, and the external threaded nut is screwed into the movable nut to achieve quick installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1It is a cross-sectional view of a top view of a heat recovery tank in Example 1;

[0018] Figure 2 This is a schematic diagram of the internal structure of a heat recovery tank in Example 2. DETAILED DESCRIPTION

[0019] The following is further described in detail through specific implementation methods:

[0020] The reference numerals in the drawings of the specification include: water inlet 1, heat exchange tube 2, fixed bracket 3, wastewater outlet 4, water outlet 5, second guide plate 6, first guide plate 7, trough body 8, wastewater inlet 9, guide hole 10, and movable nut 11.

[0021] In the following statements, directional words such as "left", "right", "up", and "down" are all based on the directions shown in the diagram. In practice, if the corresponding structures are changed in the same direction based on the directions while keeping the relative positions unchanged, it will not affect the implementation of the plan.

[0022] Embodiment 1: A heat recovery tank, such as Figure 1 As shown, it includes a tank body 8, which is fixed with a wastewater inlet 9 and a wastewater outlet 4, and the bottom of the tank body 8 is tilted downward toward the wastewater outlet 4. The tilted bottom can adjust the flow rate of the waste hot water, and at the same time ensure that there is no residual waste hot water at the bottom of the tank when the waste hot water flows through, and it does not smell.

[0023] A heat exchange tube 2 is arranged in the tank body 8 , and a fixing bracket 3 is arranged on the heat exchange tube. The fixing bracket 3 fixes the heat exchange tube 2 as a whole through a cable tie to ensure that it does not deform and is convenient for later disassembly and assembly. The heat exchange tube 2 includes a water inlet 1 and a water outlet 5 .

[0024] The trough body 8 is also fixedly provided with a first guide plate 7 and a second guide plate 6 for isolating the wastewater inlet 9 and the wastewater outlet 4 from the heat exchange tube 2. The first guide plate 7 and the second guide plate 6 are both provided with a plurality of groups of guide holes covering the heat exchange tube 2. Each guide hole group includes a plurality of guide holes 10 evenly spaced apart. The number of guide hole groups can be adjusted according to actual conditions.

[0025] In this solution, the heat exchange tube 2 is located inside the tank body 8 , and the heat exchange tube 2 is provided with a water inlet 1 and a water outlet 5 , and the tap water to be heated is introduced into the heat exchange tube 2 through the water inlet 1 .

[0026] Since the heat exchange tube 2 is located between the wastewater inlet 9 and the wastewater outlet 4, the waste hot water enters the tank body 8 through the wastewater inlet 9, and the tank body 8 is also fixedly provided with a first guide plate 7 and a second guide plate 6 that isolate the wastewater inlet 9 and the wastewater outlet 4 from the heat exchange tube 2. The first guide plate 7 and the second guide plate 6 are both provided with a plurality of guide hole groups covering the heat exchange tube 2. The guide hole group includes a plurality of guide holes 10 arranged at intervals. Therefore, the first guide plate 7 blocks the waste hot water entering from the wastewater inlet 9, and the waste hot water accumulates in the space between the first guide plate 7 and the right side of the tank body 8, and then disperses and flows through the heat exchange tube 2 through the plurality of guide holes 10, and then flows into the wastewater inlet 9 through the plurality of guide holes 10 on the second guide plate 6 to be discharged outwardly. The heat of the waste hot water is transferred to the heat exchange tube 2, and the tap water flows outwardly through the outlet 5 after being heated.

[0027] In the present solution, the multiple guide holes 10 of the first guide plate 7 play a role in diverting the waste hot water, so that the waste hot water is evenly distributed and can cover the entire heat exchange tube 2, thereby increasing the heat exchange area, and the multiple guide holes 10 of the second guide plate 6 can slow down the speed at which the waste hot water is discharged outward, thereby extending the heat exchange time between the waste hot water and the heat exchange tube 2. Therefore, the present solution can improve the heat exchange efficiency of tap water, achieve the purpose of sufficient heat recovery, high efficiency, and energy saving.

[0028] The tank body 8 is provided with a heat-insulating layer, which can slow down the speed of heat transfer to the outside and play a role in heat preservation.

[0029] In addition, the tank body 8 includes a detachable top cover. By opening the top cover, the heat exchange tube 2 and the fixing bracket 3 can be removed for easy cleaning.

[0030] Embodiment 2: The difference from embodiment 1 is that Figure 2 The water inlet 1 and the water outlet 5 are coaxially connected with a movable nut 11. The external water pipe is provided with an external thread nut used in conjunction with the internal thread of the movable nut 11, and the external thread nut is screwed into the movable nut 11 to achieve quick installation.

[0031] The standard parts used in the utility model can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

Claims

1. A heat recovery tank, comprising a tank body, wherein a heat exchange tube is arranged inside the tank body, wherein the heat exchange tube is provided with a water inlet and a water outlet, and wastewater inlet and wastewater outlet are also arranged on both sides of the tank body, wherein the heat exchange tube is located between the wastewater inlet and the wastewater outlet; characterized in that: The trough body is also fixed with a first guide plate and a second guide plate that isolate the wastewater inlet and the wastewater outlet from the heat exchange tube. The first guide plate and the second guide plate are both provided with multiple groups of guide holes covering the heat exchange tube, and each guide hole group includes multiple guide holes arranged at intervals.

2. A heat recovery tank according to claim 1, characterized in that: The bottom of the tank body is inclined downward toward the wastewater outlet.

3. A heat recovery tank according to claim 2, characterized in that: The tank body is provided with a fixed bracket, and the heat exchange tubes are connected to the fixed bracket and distributed in a serpentine shape.

4. A heat recovery tank according to claim 3, characterized in that: The multiple guide holes of each guide hole group are evenly spaced.

5. A heat recovery tank according to claim 4, characterized in that: The tank body is provided with a heat-insulating layer.

6. A heat recovery tank according to claim 5, characterized in that: The water inlet and the water outlet are coaxially rotatably connected with a movable nut.

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