A waste heat recovery device for cooling water of a heating air compressor

Abstract

This utility model relates to the field of waste heat recovery technology for air compressor cooling water, and more particularly to a waste heat recovery device for heating air compressor cooling water. The device includes an air compressor; a heat exchanger connected to the air compressor; a hot water storage tank connected to the heat exchanger, with an inlet pipe at the top of the hot water storage tank; and a filter structure disposed inside the hot water storage tank, below the inlet pipe. This waste heat recovery device for heating air compressor cooling water solves the problem in existing waste heat recovery devices for heating air compressors where impurities in the water added to the heat exchanger can damage the heat exchanger.

Description

Technical Field

[0001] This application relates to the field of waste heat recovery technology for air compressor cooling water, and in particular to a waste heat recovery device for heating air compressor cooling water. Background Technology

[0002] An air compressor is a power device used to compress air into high-pressure gas, widely used in industrial manufacturing, construction engineering, automotive repair, and many other fields. During operation, air compressors generate a significant amount of waste heat. This is because the air releases heat when compressed into high-pressure gas, causing a significant rise in the temperature of the equipment itself and its surrounding environment. This waste heat represents unused energy, not only resulting in energy waste and increased operating costs, but also adversely affecting the normal operation and lifespan of the equipment, thus increasing the frequency and cost of maintenance.

[0003] The waste heat recovery device for cooling water in a heating air compressor is designed to effectively utilize the waste heat generated during the operation of the air compressor. This device absorbs heat through a cooling water circulation system, heating the cooling water for use in heating systems or hot water supply, thus achieving energy reuse. This not only achieves energy conservation and emission reduction, and lowers energy consumption, but also improves overall energy efficiency and reduces operating costs. Furthermore, the waste heat recovery process helps reduce thermal pollution emissions, resulting in significant environmental benefits.

[0004] In waste heat recovery systems for cooling water in heating air compressors, heated hot water is typically stored in a hot water storage tank for later use. After the water in the storage tank is used, it needs to be replenished, and a circulating pump transports the water to a heat exchanger for heating. However, the replenished water may contain impurities. If it enters the heat exchanger directly without treatment, it can cause blockages or corrosion to the internal structure, affecting its heat transfer efficiency and service life. Utility Model Content

[0005] In view of this, the purpose of this application is to provide a waste heat recovery device for cooling water of a heating air compressor, so as to solve the problem that impurities in the water added to the heat exchanger in the existing waste heat recovery device for cooling water of a heating air compressor can damage the heat exchanger.

[0006] According to the present invention, a waste heat recovery device for cooling water of a heating air compressor is provided, wherein the waste heat recovery device for cooling water of the heating air compressor includes: an air compressor; a heat exchanger connected to the air compressor; a hot water storage tank connected to the heat exchanger, wherein a water inlet pipe is provided on the top of the hot water storage tank; and a filter structure disposed inside the hot water storage tank, wherein the filter structure is disposed below the water inlet pipe.

[0007] Preferably, the filtration structure includes: a filter screen, the outer periphery of which is installed on the inner wall of the hot water storage tank; an opening, which is formed in a fan shape on the side of the filter screen away from the water inlet pipe; and a collection frame, which is disposed directly below the opening.

[0008] Preferably, a motor is provided on the top of the hot water storage tank, and the drive shaft of the motor extends vertically into the interior of the hot water storage tank. The drive shaft of the motor passes through the center of the filter screen, and a cleaning brush extending radially is provided on the drive shaft of the motor. The cleaning brush abuts against the upper surface of the filter screen. When the drive shaft of the motor rotates, the cleaning brush performs a circular motion on the upper surface of the filter screen.

[0009] Preferably, the filter structure further includes a fixing frame, which is disposed directly below the opening and installed in the hot water storage tank. The collection frame is movably disposed within the fixing frame, and the end of the collection frame protrudes from the outer wall of the hot water storage tank.

[0010] Preferably, the drive shaft of the motor is provided with a plurality of radially extending stirring shafts, the stirring shafts being located below the filter structure, and the plurality of stirring shafts being arranged at intervals in the vertical direction.

[0011] Preferably, the heat exchanger has a first heat exchange coil and a second heat exchange coil respectively arranged on opposite sides, the air compressor is connected to the first heat exchange coil, and the hot water storage tank is connected to the second heat exchange coil.

[0012] Preferably, the air compressor is connected to the first heat exchange coil via a heat transfer pipe, and the hot water storage tank is connected to the second heat exchange coil via a first water supply pipe, with a circulation pump installed on the first water supply pipe.

[0013] Preferably, the waste heat recovery device for the cooling water of the heating air compressor further includes a pumping structure, which is located on the side of the hot water storage tank away from the heat exchanger and is connected to the interior of the hot water storage tank.

[0014] Preferably, the pumping structure includes: a pumping pipe connected to the bottom of the hot water storage tank on the side away from the heat exchanger; a pump installed on the side of the hot water storage tank away from the heat exchanger, the pump being connected to the pumping pipe; and a second water supply pipe connected to the pump, the second water supply pipe being provided with a first valve.

[0015] Preferably, a second valve is provided on the water inlet pipe.

[0016] This utility model discloses a waste heat recovery device for cooling water in a heating air compressor. The heat exchanger is connected to the air compressor, and a hot water storage tank is connected to the heat exchanger. An inlet pipe is installed at the top of the hot water storage tank for replenishing water. A filter structure is installed inside the hot water storage tank, below the inlet pipe. The filter structure removes impurities from the water entering from the inlet pipe, preventing impurities from entering the heat exchanger and causing damage. This effectively solves the problem in existing waste heat recovery devices for heating air compressors where impurities in the water added to the heat exchanger can damage it.

[0017] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of a waste heat recovery device for cooling water of a heating air compressor according to the present invention.

[0020] Figure 2 This is a schematic diagram of the internal structure of the waste heat recovery device for cooling water of a heating air compressor according to this utility model.

[0021] Figure 3 This is a schematic diagram of a portion of the structure of the waste heat recovery device for cooling water of a heating air compressor according to this utility model.

[0022] Figure 4 This is a schematic diagram of the filter screen of the waste heat recovery device for cooling water of a heating air compressor according to this utility model.

[0023] Reference numerals in the attached drawings: 1-Air compressor; 2-Heat exchanger; 21-First heat exchange coil; 22-Second heat exchange coil; 3-Hot water storage tank; 4-Heat transfer pipe; 5-Circulation pump; 6-First water supply pipe; 7-Stirring structure; 701-Motor; 702-Stirring shaft; 8-Filter structure; 801-Filter screen; 802-Opening; 803-Cleaning brush; 9-Pumping structure; 901-Pumping pump; 902-Pumping pipe; 903-Second water supply pipe; 904-First valve; 10-Inlet pipe; 11-Second valve; 12-Fixing frame; 13-Collection frame. Detailed Implementation

[0024] The following detailed embodiments are provided to help the reader gain a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will be apparent after understanding the disclosure of this application. For example, the order of operations described herein is merely illustrative and is not limited to the order set forth herein; changes that will be apparent after understanding the disclosure of this application are possible, except for operations that must occur in a specific order. Furthermore, for clarity and brevity, descriptions of features known in the art may be omitted.

[0025] The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein have been provided merely to illustrate some of the many feasible ways of implementing the methods, apparatus, and / or systems described herein that will be apparent upon understanding the disclosure of this application.

[0026] Throughout the specification, when an element (such as a layer, region, or substrate) is described as being "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, it may be directly "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, or there may be one or more other elements in between. In contrast, when an element is described as being "directly on" another element, "directly connected to" another element, "directly bonded to" another element, "directly on" another element, or "directly covering" another element, there may be no other elements in between.

[0027] As used herein, the term “and / or” includes any one of the relevant items listed and any combination of any two or more items.

[0028] Although terms such as “first,” “second,” and “third” may be used herein to describe individual components, assemblies, regions, layers, or parts, these components, assemblies, regions, layers, or parts are not limited by these terms. Rather, these terms are used only to distinguish one component, assembly, region, layer, or part from another. Therefore, without departing from the teachings of the examples described herein, the first component, assembly, region, layer, or part referred to as the second component, assembly, region, layer, or part may also be referred to as the second component, assembly, region, layer, or part.

[0029] For ease of description, spatial relation terms such as “above,” “upper,” “below,” and “lower” are used herein to describe the relationship between one element and another, as shown in the accompanying drawings. Such spatial relation terms are intended to include not only the orientation depicted in the drawings but also different orientations of the device during use or operation. For example, if the device in the drawings is flipped, an element described as being “above” or “upper” relative to another element will subsequently be “below” or “lower” relative to that other element. Therefore, the term “above” includes both “above” and “below” orientations depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relation terms used herein will be interpreted accordingly.

[0030] The terminology used herein is for the purpose of describing various examples only and is not intended to limit the examples. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms “comprising,” “including,” and “having” enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0031] Variations in the shapes shown in the accompanying drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the accompanying drawings, but include changes in shape that may occur during manufacturing.

[0032] The features of the examples described herein can be combined in various ways that will be apparent upon understanding the disclosure of this application. Furthermore, although the examples described herein have a wide variety of constructions, other constructions are possible, as will be apparent upon understanding the disclosure of this application.

[0033] This utility model provides a waste heat recovery device for cooling water of a heating air compressor, such as... Figures 1 to 4 As shown, the waste heat recovery device for cooling water of the heating air compressor includes an air compressor 1, a heat exchanger 2, a hot water storage tank 3, and a filter structure 8.

[0034] In the following description, reference will be made to Figures 1 to 4 The specific structure of the aforementioned components of the waste heat recovery device for cooling water of the heating air compressor and the connection relationship of the aforementioned components are described in detail.

[0035] like Figures 1 to 4As shown, in this embodiment, the air compressor 1, heat exchanger 2, and hot water storage tank 3 can be arranged sequentially. The heat exchanger 2 can be connected to the air compressor 1, and the hot water storage tank 3 can be connected to the heat exchanger 2 to achieve heat exchange between the hot water storage tank 3 and the air compressor 1. A water inlet pipe 10 can be installed at the top of the hot water storage tank 3 for replenishing water to the tank. A filter structure 8 can be installed inside the hot water storage tank 3. The filter structure 8 is located below the water inlet pipe 10, allowing impurities in the water entering through the water inlet pipe 10 to be filtered out, preventing impurities from entering the heat exchanger 2 with the water and causing damage.

[0036] Preferred, such as Figures 1 to 4 As shown, in this embodiment, a stirring structure 7 communicating with the interior of the hot water storage tank 3 is provided on the top of the hot water storage tank 3 to ensure uniform water temperature within the tank. A pumping structure 9 can be provided on the side of the hot water storage tank 3 away from the heat exchanger 2 to extract hot water from the tank. A filter structure 8 is provided inside the hot water storage tank 3, and the filter structure 8 may include a filter screen 801, an opening 802, and a collection frame 13. The filter screen 801 is used to filter the water flowing out from the inlet pipe 10. The outer periphery of the filter screen 801 can be installed on the inner wall of the hot water storage tank 3. Specifically, the outer periphery of the filter screen 801 can be fixed by a metal ring, which can be welded to the inner wall of the hot water storage tank 3. The opening 802 can be opened on the side of the filter screen 801 away from the inlet pipe 10. The opening 802 can be formed in a fan shape. The collection frame 13 can be located directly below the opening 802 to collect impurities.

[0037] Furthermore, preferably, such as Figures 1 to 4 As shown, in this embodiment, the stirring structure 7 may include a motor 701 and a stirring shaft 702. The motor 701 may be located at the top of the hot water storage tank 3. The drive shaft of the motor 701 may extend vertically into the interior of the hot water storage tank 3. The drive shaft of the motor 701 may pass through the center of the filter screen 801, and a radially extending cleaning brush 803 is provided on the drive shaft of the motor 701. The cleaning brush 803 may abut against the upper surface of the filter screen 801, so that when the drive shaft of the motor 701 rotates, the cleaning brush 803 will perform a circular motion on the upper surface of the filter screen 801, thereby sweeping impurities on the upper surface of the filter screen 801 through the opening 802 into the collection frame 13.

[0038] Preferred, such as Figure 2 and Figure 3As shown, in this embodiment, the number of stirring shafts 702 can be multiple. Multiple radially extending stirring shafts 702 can be provided on the drive shaft of the motor 701. The stirring shafts 702 are located below the filter structure 8 to avoid interference between the stirring shafts 702 and the filter structure 8. Multiple stirring shafts 702 can be arranged at intervals in the vertical direction to ensure uniform stirring.

[0039] Further optimized, such as Figure 1 and Figure 2 As shown, in this embodiment, the filter structure 8 may further include a fixing frame 12. The fixing frame 12 may be positioned directly below the opening 802 of the filter screen 801. The first end of the fixing frame 12 (which may be as follows) Figure 2 The right end shown can be welded to the side wall of the hot water storage tank 3, and the second end of the fixing frame 12 (can be as shown) Figure 2 The left end (shown) can be connected to the bottom of the filter screen 801. The collection frame 13 can be movably set inside the fixed frame 12 for easy removal. The end of the collection frame 13 can protrude from the outer wall of the hot water storage tank 3, and a handle can be provided at the end of the collection frame 13 to facilitate the operator to remove the collection frame 13 and clean the impurities collected therein. Both the collection frame 13 and the fixed frame 12 can be set as fan-shaped frames, but are not limited to this, as long as they can collect impurities falling from the opening 802.

[0040] In addition, preferred, such as Figure 1 and Figure 2 As shown in the embodiment, the heat exchanger 2 may have a first heat exchange coil 21 and a second heat exchange coil 22 respectively arranged on opposite sides inside, and the first heat exchange coil 21 and the second heat exchange coil 22 can exchange heat within the heat exchanger 2. An air compressor 1 can be connected to the first heat exchange coil 21, allowing fluid from the air compressor 1 to flow into the heat exchanger 2. A hot water storage tank 3 can be connected to the second heat exchange coil 22, allowing water from the hot water storage tank 3 to flow into the heat exchanger 2.

[0041] Further optimized, such as Figure 1 and Figure 2As shown, in this embodiment, the air compressor 1 can be connected to the first heat exchange coil 21 via a heat transfer pipe 4. Specifically, the heat transfer pipe 4 may include two pipes spaced apart vertically, each connecting both ends of the first heat exchange coil 21 to the air compressor 1, allowing the fluid in the air compressor 1 to flow into the first heat exchange coil 21 for heat exchange before flowing back to the air compressor 1. The hot water storage tank 3 can be connected to the second heat exchange coil 22 via a first water supply pipe 6. Specifically, the first water supply pipe 6 may include two pipes spaced apart vertically, each connecting both ends of the second heat exchange coil 22 to the hot water storage tank 3. Furthermore, a circulation pump 5 can be installed on one of the first water supply pipes 6, allowing the water in the hot water storage tank 3 to flow into the second heat exchange coil 22 for heat exchange under the drive of the circulation pump 5 before flowing back to the hot water storage tank 3.

[0042] Preferred, such as Figure 1 and Figure 2 As shown in the embodiment, the waste heat recovery device for the cooling water of the heating air compressor may further include a pumping structure 9. The pumping structure 9 may be located on the side of the hot water storage tank 3 away from the heat exchanger 2. The pumping structure 9 is connected to the interior of the hot water storage tank 3 and is used to pump hot water for user use.

[0043] Furthermore, preferably, such as Figure 1 and Figure 2 As shown, in this embodiment, the water pumping structure 9 may include a pumping pipe 902, a pumping pump 901, and a second water supply pipe 903. The pumping pipe 902 is connected to the bottom of the side of the hot water storage tank 3 away from the heat exchanger 2 for pumping water. The pumping pump 901 can be mounted on the side of the hot water storage tank 3 away from the heat exchanger 2 via a bracket. The pumping pump 901 is connected to the pumping pipe 902. The second water supply pipe 903 is connected to the pumping pump 901, allowing the pumping pump 901 to pump hot water from the hot water storage tank 3 into the second water supply pipe 903. More preferably, a first valve 904 may be provided on the second water supply pipe 903, and a second valve 11 may be provided on the inlet pipe 10 to control the water flow rate.

[0044] During use, firstly, open the second valve 11 on the inlet pipe 10 to allow external water to enter the hot water storage tank 3, and control the water flow to prevent it from flowing to the opening 802 of the filter screen 801. The filter screen 801 filters impurities in the water. Then, the water in the hot water storage tank 3 is pumped by the circulation pump 5 to the heat exchanger 2 for heat exchange and heating with the air compressor 1. The heated water then returns to the hot water storage tank 3 for storage. During the heating process, the motor 701 drives the stirring shaft 702 to rotate, stirring the water in the hot water storage tank 3 to ensure even heating. At the same time, the motor 701 drives the cleaning brush 803 on top of the filter screen 801 to rotate, sweeping the impurities filtered by the filter screen 801 to the opening 802 and into the collection frame 13 to prevent impurities from accumulating and affecting the filtration effect of the filter screen 801. Finally, the water in the hot water storage tank 3 can be pumped out by the water pump 901 for use.

[0045] Finally, it should be noted that the above-described embodiments are merely specific implementations of this application, used to illustrate the technical solutions of this application, and not to limit them. The scope of protection of this application is not limited thereto. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the scope of the technology disclosed in this application. Such modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A heat recovery device for a heat and power plant, characterized in that The waste heat recovery device for the cooling water of the heating air compressor includes: Air compressor; A heat exchanger is connected to the air compressor; A hot water storage tank, connected to the heat exchanger, has an inlet pipe at the top; and A filter structure is installed inside the hot water storage tank, and the filter structure is located below the water inlet pipe.

2. The heat recovery apparatus according to claim 1, wherein The filtering structure includes: A filter screen, the outer periphery of which is installed on the inner wall of the hot water storage tank; An opening is formed on the side of the filter screen away from the inlet pipe, the opening being fan-shaped; and A collection box is located directly below the opening.

3. The heat recovery apparatus according to claim 2, wherein A motor is installed on the top of the hot water storage tank. The drive shaft of the motor extends vertically into the interior of the hot water storage tank and passes through the center of the filter screen. A cleaning brush extending radially is installed on the drive shaft of the motor. The cleaning brush abuts against the upper surface of the filter screen. When the drive shaft of the motor rotates, the cleaning brush performs a circular motion on the upper surface of the filter screen.

4. The heat recovery apparatus according to claim 3, wherein The filter structure also includes a fixing frame, which is located directly below the opening and is installed in the hot water storage tank. The collection frame is movably disposed within the fixing frame, with its end protruding from the outer wall of the hot water storage tank.

5. The heat recovery apparatus according to claim 3, wherein The motor drive shaft is provided with a plurality of radially extending stirring shafts, which are located below the filter structure, and the plurality of stirring shafts are arranged at intervals in the vertical direction.

6. The heat recovery apparatus according to claim 1, wherein The heat exchanger has a first heat exchange coil and a second heat exchange coil arranged on opposite sides. The air compressor is connected to the first heat exchange coil, and the hot water storage tank is connected to the second heat exchange coil.

7. The heat recovery apparatus according to claim 6, wherein The air compressor is connected to the first heat exchange coil via a heat transfer pipe, and the hot water storage tank is connected to the second heat exchange coil via a first water supply pipe. A circulation pump is installed on the first water supply pipe.

8. The heat recovery apparatus according to claim 1, wherein The waste heat recovery device for the cooling water of the heating air compressor also includes a pumping structure, which is located on the side of the hot water storage tank away from the heat exchanger and is connected to the interior of the hot water storage tank.

9. The heat recovery apparatus according to claim 8, wherein The pumping structure includes: A water pump pipe is connected to the bottom of the side of the hot water storage tank away from the heat exchanger; A water pump is installed on the side of the hot water storage tank away from the heat exchanger, and the water pump is connected to the water pumping pipe; and The second water supply pipe is connected to the water pump, and a first valve is installed on the second water supply pipe.

10. The heat recovery apparatus according to claim 1, wherein A second valve is installed on the water inlet pipe.

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