A cleaning machine capable of waste heat utilization

Abstract

The utility model belongs to the technical field of cleaning machine, especially point to a kind of cleaning machine of waste heat utilization, including engine, water pump and spray gun, water pump is pressurized by engine drive liquid, silencer is equipped on the engine, the water outlet of water pump is connected spray gun by hose, heat exchange pipe is equipped on the silencer, the water inlet of heat exchange pipe is connected water inlet pipe, water outlet is connected the water inlet of water pump;The heat exchange pipe is arranged in silencer, and both ends of heat exchange pipe respectively extend to silencer outside;Or the heat exchange pipe is wound in silencer outside.The utility model can recycle and utilize the waste heat of silencer, reduce energy loss, simultaneously need not to set up separate heating device, low in cost, energy consumption is low.

Description

Technical Field

[0001] This utility model belongs to the field of cleaning machine technology, and specifically refers to a cleaning machine that can utilize waste heat. Background Technology

[0002] A typical cleaning machine includes an engine, a water pump, and a spray gun. The water pump, driven by the engine, pressurizes the liquid, and its outlet is connected to the spray gun via a hose. To reduce engine exhaust noise, a muffler is usually installed on the engine. The exhaust gases and heat generated after engine combustion are discharged through the muffler. The temperature inside the muffler can reach around 300 degrees Celsius, and the temperature of the muffler's outer shell is also above 100 degrees Celsius. The heat from the muffler dissipates into the air, resulting in energy loss.

[0003] To improve cleaning efficiency or for de-icing purposes, hot water cleaning machines have emerged on the market. Existing hot water cleaning machines typically use a heating device to heat the water. For example, a fuel-fired high-pressure hot water cleaning machine disclosed in Chinese Utility Model Patent (Announcement No. CN 212168306U, application date 2020.04.08, announcement date 2020.12.18) heats the water using a fuel-fired heater. Another example is a high-pressure hot water cleaning machine disclosed in Chinese Utility Model Patent (Announcement No. CN217289471U, application date 2021.04.30, announcement date 2022.08.26), which heats the water using a boiler assembly. The shortcomings of existing hot water cleaning machines are: the need for a separate heating device, resulting in high costs and high energy consumption. Utility Model Content

[0004] The purpose of this invention is to provide a cleaning machine that can utilize waste heat, which can recover and utilize the waste heat of the silencer, reduce energy loss, and eliminate the need for a separate heating device, resulting in low cost and low energy consumption.

[0005] This utility model is implemented as follows: A waste heat-utilizing cleaning machine includes an engine, a water pump, and a spray gun. The water pump is driven by the engine to pressurize liquid. The engine is equipped with a muffler. The outlet of the water pump is connected to the spray gun via a hose. The muffler is equipped with a heat exchange tube. The inlet of the heat exchange tube is connected to an inlet pipe, and the outlet is connected to the inlet of the water pump. The heat exchange tube is disposed inside the muffler, with both ends extending outside the muffler; or the heat exchange tube is wound around the outside of the muffler.

[0006] In the aforementioned waste heat-utilizing cleaning machine, the outlet of the heat exchange tube is connected to the inlet of the water pump via a pipe.

[0007] In the above-mentioned waste heat-utilizing cleaning machine, the silencer is long and strip-shaped, with its length direction arranged horizontally and its width direction arranged vertically. The heat exchange tube is bent into a serpentine shape and extends horizontally. The front and rear ends of the serpentine heat exchange tube are bent downwards and respectively attached to the front and rear panels of the silencer.

[0008] In the aforementioned waste heat-utilizing cleaning machine, the silencer is elongated, and the heat exchange tube is spirally wound around the outside of the silencer along its width.

[0009] In the aforementioned waste heat-utilizing cleaning machine, the silencer is elongated, and the heat exchange tube is spirally wound around the outside of the silencer along its length.

[0010] In the above-mentioned waste heat-utilizing cleaning machine, the muffler is long and strip-shaped, and its length is arranged laterally. The right end of the muffler is provided with an exhaust pipe, the air inlet of the exhaust pipe is connected to the air outlet of the engine, the heat exchange tube is arranged inside the muffler, and the part inside the muffler is U-shaped. The ends of the heat exchange tube all extend from the left end of the muffler.

[0011] In the above-mentioned waste heat-utilizing cleaning machine, the silencer is long and strip-shaped, and its length is arranged laterally. The heat exchange tube is arranged inside the silencer, and the part inside the silencer is spiral-shaped. One end of the heat exchange tube extends from the left end of the silencer, and the other end extends from the right end of the silencer.

[0012] In the aforementioned waste heat-utilizing cleaning machine, the silencer is provided with a protective cover, and the protective cover has a through hole for the end of the heat exchange tube to extend out.

[0013] In the aforementioned waste heat-utilizing cleaning machine, the heat exchange tube is made of bent stainless steel.

[0014] The outstanding advantages of this utility model compared to the prior art are: This invention features a heat exchange tube installed between the water inlet pipe and the water pump. The heat exchange tube is mounted on the muffler, allowing the water inside the tube to exchange heat with the muffler. This recovers and utilizes the waste heat from the muffler to heat the water, reducing energy loss, improving fuel efficiency, and increasing overall energy use. Furthermore, it eliminates the need for a separate heating device, resulting in low cost and low energy consumption. Additionally, it lowers the temperature of the muffler itself, effectively preventing burns. Simultaneously, it reduces heat transfer from the muffler to the engine, thereby lowering the engine's temperature and extending its lifespan. The heat exchange tube can be located inside the muffler or wrapped around its outer surface, resulting in a simple structure that is easy to manufacture and install. Attached Figure Description

[0015] Figure 1This is a front view of Embodiment 1 of this utility model.

[0016] Figure 2 This is a front view of the silencer and heat exchange tube of Embodiment 1 of this utility model.

[0017] Figure 3 This is a right view of the silencer and heat exchange tube of Embodiment 1 of this utility model.

[0018] Figure 4 This is a front view of the heat exchange tube of Embodiment 1 of this utility model.

[0019] Figure 5 This is a right view of the heat exchange tube of Embodiment 1 of this utility model.

[0020] Figure 6 This is a front view of the silencer and heat exchange tube of Embodiment 2 of this utility model.

[0021] Figure 7 This is a front view of the heat exchange tube of Embodiment 2 of this utility model.

[0022] Figure 8 This is a top view of the heat exchange tube of Embodiment 2 of this utility model.

[0023] Figure 9 This is a front view of the silencer and heat exchange tube of Embodiment 3 of this utility model.

[0024] Figure 10 This is a front view of the heat exchange tube of Embodiment 3 of this utility model.

[0025] Figure 11 This is a left view of the heat exchange tube of Embodiment 3 of this utility model.

[0026] Figure 12 This is a front view of the silencer and heat exchange tube of Embodiment 4 of this utility model.

[0027] Figure 13 This is a front view of the heat exchange tube of Embodiment 4 of this utility model.

[0028] Figure 14 This is a front view of the silencer and heat exchange tube of Embodiment 5 of this utility model.

[0029] Figure 15 This is a front view of the heat exchange tube of Embodiment 5 of this utility model.

[0030] Reference numerals: 1. Engine; 2. Muffler; 3. Heat exchanger pipe; 4. Exhaust pipe; 5. Protective cover. Detailed Implementation

[0031] The present invention will be further described below with reference to specific embodiments. See also: Figure 1—15: Example 1: See Figure 1-5 : A waste heat-utilizing cleaning machine includes an engine 1, a water pump, and a spray gun. The water pump is driven by the engine 1 to pressurize the liquid. The engine 1 is equipped with a muffler 2. The outlet of the water pump is connected to the spray gun via a hose. The muffler 2 is equipped with a heat exchange tube 3. The inlet of the heat exchange tube 3 is connected to an inlet pipe, and the outlet is connected to the inlet of the water pump. The heat exchange tube 3 is disposed inside the muffler 2, and both ends of the heat exchange tube 3 extend out of the muffler 2; or the heat exchange tube 3 is wound around the outside of the muffler 2.

[0032] The working principle of this utility model is as follows: Figure 1-5 As shown, the exhaust gas generated by the engine enters the muffler 2 and is then discharged. The engine drives the water pump to work, and water enters the heat exchange tube 3 through the water inlet pipe. The water absorbs heat from the muffler 2 in the heat exchange tube 3 and its temperature rises. Then, the heated water is sprayed out from the spray gun by the water pump.

[0033] This invention features a heat exchange tube 3 installed between the water inlet pipe and the water pump. The heat exchange tube 3 is mounted on the muffler 2, where the water inside the heat exchange tube 3 exchanges heat with the muffler 2. This process recovers and utilizes the waste heat from the muffler 2 to heat the water, reducing energy loss, improving fuel efficiency, and increasing energy utilization efficiency. Furthermore, it eliminates the need for a separate heating device, resulting in low cost and low energy consumption. Additionally, it lowers the temperature of the muffler 2 itself, effectively preventing burns. Simultaneously, it reduces heat transfer from the muffler 2 to the engine 1, thereby lowering the engine 1's body temperature and extending its service life. The heat exchange tube 3 can be installed inside the muffler 2 or wrapped around its outer surface, resulting in a simple structure that is easy to process and install.

[0034] Furthermore, the outlet of the heat exchange tube 3 is connected to the inlet of the water pump via a pipe.

[0035] The specific structure and installation structure of muffler 2 are as follows: Figure 2-5 As shown, the muffler 2 is long and narrow, with its length arranged horizontally and its width arranged vertically. The heat exchange tube 3 is bent into a serpentine shape and extends horizontally. The front and rear ends of the serpentine heat exchange tube 3 are bent downwards and attached to the front and rear plates of the muffler 2, respectively. The structure is simple, easy to process and install, and has high heat exchange efficiency.

[0036] During installation, the bent heat exchange tube 3 is directly fitted onto the outside of the silencer 2, making assembly convenient.

[0037] To secure the heat exchange tube 3 and the silencer 2, the bent heat exchange tube 3 can be fixed to the outside of the silencer 2 by spot welding.

[0038] Furthermore, the right end of the muffler 2 is provided with an exhaust pipe 4, and the air inlet of the exhaust pipe 4 is connected to the air outlet of the engine 1.

[0039] The heat exchange tube 3 can be connected in the following ways: the left end of the heat exchange tube 3 is connected to the water inlet pipe, and the right end is connected to the water inlet of the water pump. Alternatively, the right end of the heat exchange tube 3 can be connected to the water inlet pipe, and the left end to the water inlet of the water pump. In this embodiment, the left end of the heat exchange tube 3 is connected to the water inlet pipe, and the right end is connected to the water inlet of the water pump.

[0040] In order to protect the muffler 2 and prevent the muffler 2 from burning the user, the muffler 2 is covered with a protective cover 5, and the protective cover 5 is provided with a through hole for the end of the heat exchange tube 3 to extend out.

[0041] Furthermore, the heat exchange tube 3 is made of bent stainless steel.

[0042] Example 2: See Figure 6-8 : This embodiment is basically the same as the structure of the first embodiment above. The main difference is that the silencer 2 is long and narrow, and the heat exchange tube 3 is spirally wound around the outside of the silencer 2 along the width direction of the silencer 2. The structure is simple, easy to process and install, and has high heat exchange efficiency.

[0043] During installation, bend the heat exchange tube 3 into a spiral shape, and then place the muffler 2 in the middle of the spiral heat exchange tube 3.

[0044] To secure the heat exchange tube 3 and the silencer 2, the bent heat exchange tube 3 can be fixed to the outside of the silencer 2 by spot welding.

[0045] Example 3: See Figure 9-11 : This embodiment is basically the same as the structure of the first embodiment above. The main difference is that the silencer 2 is long and narrow, and the heat exchange tube 3 is spirally wound around the outside of the silencer 2 along the length of the silencer 2. The structure is simple, easy to process and install, and has high heat exchange efficiency.

[0046] During installation, bend the heat exchange tube 3 into a spiral shape, and then place the muffler 2 in the middle of the spiral heat exchange tube 3.

[0047] To secure the heat exchange tube 3 and the silencer 2, the bent heat exchange tube 3 can be fixed to the outside of the silencer 2 by spot welding.

[0048] Furthermore, the muffler 2 is arranged laterally along its length, and an exhaust pipe 4 is provided at the right end of the muffler 2. The air inlet of the exhaust pipe 4 is connected to the air outlet of the engine 1.

[0049] The heat exchange tube 3 can be connected in the following ways: the left end of the heat exchange tube 3 is connected to the water inlet pipe, and the right end is connected to the water pump inlet. Alternatively, the right end of the heat exchange tube 3 can be connected to the water inlet pipe, and the left end to the water pump inlet. In this embodiment, the right end of the heat exchange tube 3 is connected to the water inlet pipe, and the left end is connected to the water pump inlet.

[0050] Example 4: See Figure 12 , 13 : This embodiment is basically the same as the structure of the first embodiment above. The main difference is that the muffler 2 is long and the length direction is arranged in the horizontal direction. The right end of the muffler 2 is provided with an exhaust pipe 4. The air inlet of the exhaust pipe 4 is connected to the air outlet of the engine 1. The heat exchange pipe 3 is set inside the muffler 2, and the part inside the muffler 2 is U-shaped. The ends of the heat exchange pipe 3 all extend from the left end of the muffler 2. The structure is simple, easy to process and install, and has high heat exchange efficiency.

[0051] During installation, first bend the heat exchange tube 3 into a U-shape, then process the corresponding through holes on the outer shell and the internal partition of the muffler 2. Next, insert the U-shaped part of the heat exchange tube 3 into the lower outer shell of the muffler 2. After installing the partition and other parts, cover the upper outer shell of the muffler 2 and fix the upper and lower outer shells by welding.

[0052] To secure the heat exchange tube 3 and the silencer 2, the heat exchange tube 2 can be fixed inside the silencer 2 by spot welding.

[0053] Example 5: See Figure 14 , 15 : This embodiment is basically the same as the structure of the first embodiment above. The main difference is that the silencer 2 is long and the length direction is arranged in the transverse direction. The heat exchange tube 3 is arranged inside the silencer 2, and the part inside the silencer 2 is spiral. One end of the heat exchange tube 3 extends from the left end of the silencer 2 and the other end extends from the right end of the silencer 2. The structure is simple, easy to process and install, and has high heat exchange efficiency.

[0054] During installation, first bend the middle part of the heat exchange tube 3 into a spiral shape, process the corresponding through holes on the outer shell and the internal baffle of the muffler 2, then insert the U-shaped part of the heat exchange tube 3 into the lower outer shell of the muffler 2, then install the baffle and other parts, cover the upper outer shell of the muffler 2, and fix the upper and lower outer shells by welding.

[0055] The heat exchange tube 3 can be connected in the following ways: the left end of the heat exchange tube 3 is connected to the water inlet pipe, and the right end is connected to the water pump inlet. Alternatively, the right end of the heat exchange tube 3 can be connected to the water inlet pipe, and the left end to the water pump inlet. In this embodiment, the right end of the heat exchange tube 3 is connected to the water inlet pipe, and the left end is connected to the water pump inlet.

[0056] The above embodiments are only one of the preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes made in accordance with the shape, structure and principle of this utility model should be covered within the protection scope of this utility model.

Claims

1. A waste heat-utilizing cleaning machine, comprising an engine (1), a water pump, and a spray gun, wherein the water pump is driven by the engine (1) to pressurize liquid, the engine (1) is equipped with a muffler (2), and the outlet of the water pump is connected to the spray gun via a hose, characterized in that: The silencer (2) is provided with a heat exchange tube (3), the inlet of the heat exchange tube (3) is connected to the water inlet pipe, and the outlet is connected to the water inlet of the water pump; the heat exchange tube (3) is set inside the silencer (2), and the two ends of the heat exchange tube (3) extend to the outside of the silencer (2); or the heat exchange tube (3) is wrapped around the outside of the silencer (2).

2. The waste heat-utilizing cleaning machine according to claim 1, characterized in that: The silencer (2) is long and narrow, with its length arranged horizontally and its width arranged vertically. The heat exchange tube (3) is bent into a serpentine shape and extends horizontally. The front and rear ends of the serpentine heat exchange tube (3) are bent downward and attached to the front and rear panels of the silencer (2).

3. The waste heat-utilizing cleaning machine according to claim 1, characterized in that: The silencer (2) is long and narrow, and the heat exchange tube (3) is spirally wound around the outside of the silencer (2) along the width direction of the silencer (2).

4. A waste heat-utilizing cleaning machine according to claim 1, characterized in that: The silencer (2) is long and narrow, and the heat exchange tube (3) is spirally wound around the outside of the silencer (2) along the length of the silencer (2).

5. A waste heat-utilizing cleaning machine according to claim 1, characterized in that: The muffler (2) is long and horizontal. The right end of the muffler (2) is provided with an exhaust pipe (4). The air inlet of the exhaust pipe (4) is connected to the air outlet of the engine (1). The heat exchange pipe (3) is located inside the muffler (2), and the part inside the muffler (2) is U-shaped. The ends of the heat exchange pipe (3) all extend from the left end of the muffler (2).

6. A waste heat-utilizing cleaning machine according to claim 1, characterized in that: The silencer (2) is long and the length is arranged in the horizontal direction. The heat exchange tube (3) is arranged inside the silencer (2), and the part inside the silencer (2) is spiral. One end of the heat exchange tube (3) extends from the left end of the silencer (2) and the other end extends from the right end of the silencer (2).

7. A waste heat-utilizing cleaning machine according to claim 1, characterized in that: The silencer (2) is covered with a protective cover (5), and the protective cover (5) has a through hole for the end of the heat exchange tube (3) to extend out.

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