Foam composite cleaning assembly, extractor hood and method of cleaning thereof

Abstract

The present application relates to a kind of foam composite cleaning assembly, range hood and its cleaning method, foam composite cleaning assembly includes: mixing chamber, first conveying component, booster pump and second conveying component.Mixing chamber is connected with first conveying component, booster pump respectively.First conveying component is used to deliver water to mixing chamber, deliver detergent to mixing chamber, and deliver foaming agent to mixing chamber.When the cleaning work of range hood is needed, water is delivered to mixing chamber by first conveying component, detergent is delivered to mixing chamber, and foaming agent is delivered to mixing chamber, under the pressure boosting effect of booster pump, water, detergent and foaming agent are fully mixed and a large amount of foam is generated;Second conveying component outputs the generated foam to the inner wall of range hood for cleaning operation.Because detergent is fully mixed into foam in mixing chamber, the cleaning effect of foam on the inner wall of range hood is better, and high cleaning efficiency can be guaranteed.

Description

Technical Field

[0001] This invention relates to the field of kitchen appliance technology, and in particular to a foam composite cleaning component, a range hood, and a cleaning method thereof. Background Technology

[0002] Range hoods are household appliances used to remove cooking fumes from the stovetop. However, a major problem with most range hoods is that the volatile fumes condense on the inner walls of the hood (such as the surface of the impeller or the inner wall of the casing). The oil mixes with dust, particles, and other impurities to form a thick layer of grease that is difficult to clean. When the grease accumulates to a certain extent, it forms a dense, solidified layer on the inner wall of the range hood, further increasing the difficulty of cleaning.

[0003] Traditionally, the inner walls of range hoods are cleaned using cleaning media, typically steam (or water mist), water, or foam. Using water requires a large amount of water, and the low temperature makes it difficult to clean effectively. While steam can adhere to the grease surface and dissolve it, the dissolved steam is difficult to drain off, resulting in poor cleaning. Foam cleaning involves mixing water and detergent online using a foam generator, producing foam that cleans the inner walls of the range hood. This improves cleaning to some extent, but still takes a considerable amount of time to achieve the desired cleaning effect, resulting in low cleaning efficiency. Summary of the Invention

[0004] The first technical problem solved by this invention is to provide a foam composite cleaning component that can effectively guarantee the cleaning effect and cleaning efficiency.

[0005] The second technical problem solved by this invention is to provide a range hood that can effectively guarantee the cleaning effect and cleaning efficiency.

[0006] The third technical problem solved by this invention is to provide a cleaning method for range hoods that can effectively guarantee the cleaning effect and cleaning efficiency.

[0007] The first technical problem mentioned above is solved by the following technical solution:

[0008] A foam composite cleaning assembly, the foam composite cleaning assembly comprising:

[0009] The container has a mixing chamber; a first delivery assembly and a booster pump are both connected to the mixing chamber; the first delivery assembly is used to deliver water, detergent, and foaming agent into the mixing chamber; the booster pump is used to introduce outside gas into the mixing chamber to increase the pressure inside the mixing chamber.

[0010] The second conveying assembly is connected to the mixing chamber for discharging the foam generated by mixing water, detergent, and foaming agent in the mixing chamber.

[0011] The foam composite cleaning component of the present invention has the following advantages compared with the prior art:

[0012] The aforementioned foam composite cleaning assembly, when cleaning a range hood, delivers water, detergent, and foaming agent to the mixing chamber via a first conveying component. Under the pressure of a booster pump, the water, detergent, and foaming agent are thoroughly mixed to generate a large amount of foam. The second conveying component then outputs the generated foam to the inner wall of the range hood for cleaning. Because the detergent is thoroughly mixed into the foam within the mixing chamber, the foam effectively cleans the inner wall of the range hood, ensuring high cleaning efficiency.

[0013] In one embodiment, the housing further comprises a first chamber, a second chamber, and a third chamber; the first chamber is for containing water; the second chamber is for containing detergent; the third chamber is for containing foaming agent; and the first conveying assembly is for conveying water from the first chamber to the mixing chamber, conveying detergent from the second chamber to the mixing chamber, and conveying foaming agent from the third chamber to the mixing chamber.

[0014] In one embodiment, the housing includes an inner chamber and an outer chamber; the second chamber, the third chamber, and the mixing chamber are all formed in the inner chamber, and the first chamber is formed in the outer chamber; the inner chamber is placed inside the outer chamber. Thus, the hot water in the outer chamber can transfer heat to the second, third, and mixing chambers of the inner chamber, preventing the foaming agent, detergent, or foam from sticking together at low temperatures. This facilitates the thorough mixing of the detergent in the mixing chamber with the foam and ensures the foam preparation effect. Furthermore, heating the second, third, and mixing chambers of the inner chamber is achieved solely through the hot water in the outer chamber, eliminating the need for separate heating of these chambers. Moreover, the inner chamber's placement within the outer chamber results in a compact overall layout, relatively small volume, and minimal space occupation.

[0015] In one embodiment, the foam composite cleaning assembly further includes a heating device disposed in the outer casing; the heating device is used to heat the water in the outer casing; the second conveying assembly is also used to output the hot water in the first chamber to the outside. Thus, on the one hand, after the foam cleans the inner wall of the range hood, the heating device heats the water in the outer casing to form hot water, which is then output to the outside via the second conveying assembly. This hot water can further clean the inner wall of the range hood, thereby ensuring a better cleaning effect. On the other hand, after the heating device heats the water in the outer casing to form hot water, the temperature of the hot water is transferred to the inner casing, so the inner casing does not need to be equipped with a separate heating element.

[0016] In one embodiment, both the outer box and the inner box are box structures with open tops. The outer box has a flanged edge, and the inner box has an annular step at its edge. The horizontal step portion of the step rests on the flanged edge. The inner box also has a support plate, which rests on the horizontal step portion, so that the horizontal step portion is sandwiched between the flanged edge and the support plate. Thus, the inner box, by resting on the flanged edge via the step, can be fixed inside the outer box, making assembly and disassembly convenient. Furthermore, the support plate, located inside the inner box and resting on the step, acts as a seal for the inner box, ensuring that the mixing chamber is sealed. This allows the mixing chamber to store pressurized foam, preventing leakage of the foam generated within the mixing chamber.

[0017] In one embodiment, the inner casing has an opening at the top and a detachable protective shell disposed on the edge of the opening; the first conveying assembly, the second conveying assembly, and the booster pump are all mounted on the support plate; multiple pipes of the first conveying assembly are respectively inserted into the first chamber, the second chamber, the third chamber, and the mixing chamber; multiple pipes of the second conveying assembly are respectively inserted into the mixing chamber and extend to the outside of the outer casing. Thus, by mounting the first and second conveying assemblies on the support plate and protecting them with a protective shell on the edge of the inner casing, the various functional components of the foam composite cleaning assembly are not only compact and small in size, but also easy to maintain after opening the protective shell.

[0018] In one embodiment, the foam composite cleaning assembly further includes a third conveying assembly connected to the first chamber; the third conveying assembly is used to input external water into the first chamber, to convey external detergent into the second chamber, and to input external foaming agent into the third chamber; and / or, the foam composite cleaning assembly further includes a first liquid level sensor, a second liquid level sensor, and a third liquid level sensor; the first liquid level sensor is disposed in the first chamber and is used to sense the liquid level height in the first chamber, and the first liquid level sensor is electrically connected to the third conveying assembly; the second liquid level sensor is disposed in the second chamber and is used to sense the liquid level height in the second chamber, and the second liquid level sensor is electrically connected to the third conveying assembly; the third liquid level sensor is disposed in the third chamber and is used to sense the liquid level height in the third chamber, and the third liquid level sensor is electrically connected to the third conveying assembly. Thus, the first liquid level sensor can sense the liquid level in the first chamber and determine whether there is enough water. When the liquid level in the first chamber is lower than a first set range, it controls the third conveying component to add water from outside into the first chamber. When the liquid level in the first chamber is higher than the first set range, it controls the third conveying component to stop adding water. Similarly, the second liquid level sensor can sense the liquid level in the second chamber and determine whether there is enough detergent. When the liquid level in the second chamber is lower than a second set range, it controls the third conveying component to add detergent from outside into the second chamber. When the liquid level in the second chamber is higher than the second set range, it controls the third conveying component to stop adding detergent. The third liquid level sensor can sense the liquid level in the third chamber and determine whether there is enough foaming agent. When the liquid level in the third chamber is lower than a third set range, it controls the third conveying component to add foaming agent from outside into the third chamber. When the liquid level in the third chamber is higher than the third set range, it controls the third conveying component to stop adding foaming agent. Thus, it can be seen that the water in the first chamber can be controlled within a first set range. When the water in the first chamber is insufficient, it can be detected in time by the first sensor, and water from the outside can be replenished to the first chamber in time through the third conveying component. Similarly, it can also control the detergent in the second chamber within a second set range and the foaming agent in the third chamber within a third set range.

[0019] In one embodiment, the foam composite cleaning assembly further includes a pressure sensor, a pressure relief switch, and a controller. The pressure sensor senses the pressure within the mixing chamber, and the pressure relief switch, located on the mixing chamber, controls whether the mixing chamber is connected to the outside. The pressure sensor, the pressure relief switch, and the booster pump are all electrically connected to the controller. Thus, when hot water, detergent, and foaming agent are mixed in the mixing chamber in the correct proportions, the booster pump starts working, pressurizing the mixture formed by the hot water, detergent, and foaming agent in the sealed mixing chamber, providing energy to generate more foam. When the pressure within the mixing chamber reaches the upper limit of the required value, the air pressure triggers the pressure sensor, causing it to generate a signal that cuts off the power to the booster pump and stops pressurizing the mixing chamber. When the pressure within the mixing chamber drops to the lower limit of the required value, the air pressure also triggers the pressure sensor, causing it to generate a signal to reconnect the power to the booster pump and resume pressurizing the mixing chamber. In addition, under abnormal conditions, when the air pressure in the mixing chamber reaches the dangerous limit, the air pressure triggers the pressure sensor, which generates a signal to open the pressure relief switch, allowing the air pressure in the mixing chamber to be released and preventing danger from occurring.

[0020] The second technical problem mentioned above is solved by the following technical solution:

[0021] A range hood includes the aforementioned foam composite cleaning component and a range hood body, wherein the foam composite cleaning component is disposed on the range hood body.

[0022] The beneficial effects of the range hood described in this invention compared to the prior art are as follows:

[0023] In the aforementioned range hood, when cleaning is required, water, detergent, and foaming agent are delivered to the mixing chamber via a first conveying component. Under the pressure of a booster pump, the water, detergent, and foaming agent are thoroughly mixed to generate a large amount of foam. The second conveying component then outputs the generated foam to the inner wall of the range hood for cleaning. Because the detergent is thoroughly mixed into the foam within the mixing chamber, the foam effectively cleans the inner wall of the range hood, ensuring high cleaning efficiency.

[0024] The third technical problem mentioned above is solved by the following technical solution:

[0025] A method for cleaning the range hood, comprising the following steps:

[0026] Foam is generated by the foam composite cleaning component and sprayed onto the inner wall of the range hood body, so that the foam completely covers the inner wall of the range hood body. Then, hot water is used to clean the inner wall of the range hood body.

[0027] The foam composite cleaning component of the present invention has the following advantages compared with the prior art:

[0028] The above-mentioned cleaning method for range hoods involves first spraying foam containing detergent onto the inner wall of the range hood body, specifically the inner wall of the fan housing and the impeller, completely covering the inner wall of the fan housing and the surface of the impeller. This soaks the grease on the surface, greatly reducing the adhesion of the grease. Then, hot water is sprayed to rinse the surface, achieving a cleaning effect of soaking followed by rinsing. This truly achieves a thorough cleaning of grease and avoids defects such as the inner wall of the fan housing and the impeller not being cleaned properly due to the strong adhesion of grease. Attached Figure Description

[0029] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the structure of a range hood according to an embodiment of the present invention;

[0032] Figure 2 This is a schematic diagram of the structure of a foam composite cleaning assembly according to an embodiment of the present invention;

[0033] Figure 3 for Figure 2 A schematic diagram of the decomposed structure;

[0034] Figure 4 for Figure 2 Top view after the protective shell is hidden;

[0035] Figure 5 for Figure 2 The diagram shows a cross-sectional view of the inner and outer boxes.

[0036] Figure 6 This is a schematic diagram of the outer casing according to an embodiment of the present invention;

[0037] Figure 7 This is a schematic diagram of the inner box structure according to an embodiment of the present invention;

[0038] Figure 8 This is a schematic diagram of the structure of a magnetically inductive float according to an embodiment of the present invention;

[0039] Figure 9This is a structural view of a heating device according to an embodiment of the present invention;

[0040] Figure 10 This is another structural view of a heating device according to an embodiment of the present invention;

[0041] Figure 11 This is a schematic diagram of the structure of a pressure sensor according to an embodiment of the present invention;

[0042] Figure 12 for Figure 11 A schematic diagram of the cross-sectional structure;

[0043] Figure 13 This is a simplified schematic diagram showing the first conveying component, the second conveying component, the third conveying component, and the booster pump connected to the first chamber, the second chamber, the third chamber, and the mixing chamber, respectively, according to an embodiment of the present invention.

[0044] Figure label:

[0045] 10. Foam composite cleaning assembly; 11. Inner casing; 111. Mixing chamber; 112. Second chamber; 113. Third chamber; 114. Partition; 115. Step; 116. Support plate; 117. Protective shell; 12. Outer casing; 121. First chamber; 122. Flanged edge; 13. First conveying assembly; 131. First main pipeline; 132. First pump body; 133. First branch pipeline; 134. Second branch pipeline; 135. Third branch pipeline; 136. First solenoid valve; 137. Second solenoid valve; 138. Third solenoid valve; 14. Booster pump; 15. Second conveying assembly; 151. Second pump body; 152. Output pipeline; 153. Fourth branch pipeline; 154. Fourth solenoid valve; 155. Fifth branch pipeline; 16. Third delivery assembly; 161. Input pipeline; 162. Third pump body; 171. Heating device; 172. First liquid level sensor; 18. Pressure sensor; 181. Housing; 1811. First chamber; 1812. Second chamber; 182. Diaphragm valve; 183. Induction coil; 184. Metal rod; 185. Elastic element; 186. First connector pipe; 187. Second connector pipe; 19. Pressure relief switch; 20. Smoke hood body. Detailed Implementation

[0046] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0047] See Figures 1 to 3 and Figure 13 , Figure 1 A schematic diagram of the structure of a range hood according to an embodiment of the present invention is shown. Figure 2 A schematic diagram of the structure of a foam composite cleaning assembly 10 according to an embodiment of the present invention is shown. Figure 3 It shows Figure 2 A schematic diagram of the decomposed structure. Figure 13 A simplified schematic diagram of a first conveying assembly 13, a second conveying assembly 15, a third conveying assembly 16, and a booster pump 14 connected to a first chamber 121, a second chamber 112, a third chamber 113, and a mixing chamber 111, respectively, is shown in an embodiment of the present invention. An embodiment of the present invention provides a foam composite cleaning assembly 10, which includes a housing (not shown), a first conveying assembly 13, a booster pump 14, and a second conveying assembly 15. The housing forms a mixing chamber 111. Both the first conveying assembly 13 and the booster pump 14 are connected to the mixing chamber 111. The first conveying assembly 13 is used to convey water, detergent, and foaming agent into the mixing chamber 111. The booster pump 14 is used to introduce external gas into the mixing chamber 111 to increase the pressure inside the mixing chamber 111. The second conveying assembly 15 is connected to the mixing chamber 111 to output the foam generated after mixing water, detergent, and foaming agent in the mixing chamber 111.

[0048] The aforementioned foam composite cleaning component 10, when cleaning the range hood is required, delivers water, detergent, and foaming agent to the mixing chamber 111 via the first conveying component 13. Under the pressure of the booster pump 14, the water, detergent, and foaming agent are thoroughly mixed to generate a large amount of foam. The second conveying component 15 outputs the generated foam to the inner wall of the range hood for cleaning. Because the detergent is thoroughly mixed into the foam in the mixing chamber 111, the foam has a good cleaning effect on the inner wall of the range hood, ensuring high cleaning efficiency.

[0049] It should be noted that, in order to ensure that the detergent dissolves well in the foam and to ensure the foam preparation effect, the water, detergent and foaming agent introduced into the mixing chamber 111 are in a preset ratio. This preset ratio is set according to the actual situation and is not limited here.

[0050] See Figures 5 to 7 and Figure 13In one embodiment, the housing further comprises a first chamber 121, a second chamber 112, and a third chamber 113. The first chamber 121 is used to contain water. The second chamber 112 is used to contain detergent. The third chamber 113 is used to contain foaming agent. A first conveying assembly 13 is used to convey water from the first chamber 121 to the mixing chamber 111, detergent from the second chamber 112 to the mixing chamber 111, and foaming agent from the third chamber 113 to the mixing chamber 111.

[0051] See Figures 5 to 7 and Figure 13 In one embodiment, the housing includes an inner housing 11 and an outer housing 12. A second chamber 112, a third chamber 113, and a mixing chamber 111 are all formed in the inner housing 11, while a first chamber 121 is formed in the outer housing 12. The inner housing 11 is placed inside the outer housing 12. Thus, the hot water in the outer housing 12 can transfer heat to the second chamber 112, the third chamber 113, and the mixing chamber 111 of the inner housing 11, preventing adhesion of the foaming agent, detergent, or foam at low temperatures. This facilitates thorough mixing of the detergent in the mixing chamber 111 with the foam and ensures effective foam preparation. Furthermore, heating the second chamber 112, the third chamber 113, and the mixing chamber 111 of the inner housing 11 can be achieved solely through the hot water in the outer housing 12, eliminating the need for separate heating of these chambers. Moreover, the placement of the inner housing 11 inside the outer housing 12 results in a compact overall arrangement, relatively small volume, and minimal space occupation.

[0052] It should be noted that a partition 114 is provided inside the inner box 11, which divides the inner box 11 into a second chamber 112, a third chamber 113 and a mixing chamber 111.

[0053] It should be noted that the "partition 114" can be "a part of the inner box 11", that is, the "partition 114" is integrally formed with "other parts of the inner box 11"; or it can be a separate component that can be separated from "other parts of the inner box 11", that is, the "partition 114" can be manufactured independently and then combined with "other parts of the partition 114" to form a whole. Figure 6 As shown, in one embodiment, the "partition 114" is integrally molded as part of the "inner box 11".

[0054] Please see Figure 3 , Figure 9 and Figure 10In one embodiment, the foam composite cleaning assembly 10 further includes a heating device 171 disposed in the outer casing 12. The heating device 171 is used to heat the water in the outer casing 12. The second conveying assembly 15 is also used to output the hot water in the first chamber 121 to the outside. Thus, on the one hand, after the foam cleans the inner wall of the range hood, since the heating device 171 heats the water in the outer casing 12 to form hot water, and the hot water is output to the outside through the second conveying assembly 15, the hot water can further clean the inner wall of the range hood, thereby ensuring a better cleaning effect; on the other hand, after the heating device 171 heats the water in the outer casing 12 to form hot water, the temperature of the hot water is transferred to the inner casing 11, so the inner casing 11 does not need to be equipped with a separate heating element.

[0055] In this embodiment, the heating device 171 may be, for example, an electric heating wire, an electric heating rod, a semiconductor heating element, etc., and is not limited thereto. In addition, the heating device 171 may be arranged on the bottom wall of the outer casing 12 or on the side wall of the outer casing 12, depending on actual needs.

[0056] Please see Figure 3 and Figure 6 Furthermore, the foam composite cleaning assembly 10 also includes a temperature sensor (not shown in the figure). The temperature sensor is located in the first chamber 121 and is used to sense the water temperature within the first chamber 121. Based on the water temperature in the first chamber 121, the heating device 171 is controlled to operate, ensuring that the water temperature in the first chamber 121 is controlled within a preset temperature range. This preset temperature range is, for example, 50°C to 80°C. When the temperature sensor detects that the hot water temperature in the first chamber 121 reaches 80°C or higher, the power supply to the heating device 171 is correspondingly disconnected, and the heating device 171 stops operating. When the temperature sensor detects that the hot water temperature in the first chamber 121 is below 50°C, the power supply to the heating device 171 is connected, and the heating device 171 starts operating. Optionally, to ensure a better cleaning effect, if the hot water temperature in the first chamber 121 is above 80°C or below 50°C, the first conveying assembly 13 stops conveying the hot water from the first chamber 121 to the mixing chamber 111, and the second conveying assembly 15 stops outputting the hot water from the first chamber 121. Only when the temperature of the hot water in the first chamber 121 is between 50°C and 80°C can the first conveying component 13 convey the hot water in the first chamber 121 to the mixing chamber 111, and the second conveying component 15 can output the hot water in the first chamber 121 to the outside.

[0057] As an alternative, the outer casing 12 can be omitted, and for example, the first chamber 121 can be placed in the inner casing 11, and heating elements can be provided to heat the first chamber 121, the second chamber 112, the third chamber 113 and the mixing chamber 111 respectively.

[0058] Please see Figure 3 , Figures 5 to 7 In one embodiment, both the outer box 12 and the inner box 11 are box structures with open tops. The outer box 12 has a flange 122 at its edge, and the inner box 11 has an annular step 115 at its edge. The horizontal step portion of the step 115 rests on the flange 122. The inner box 11 also has a support plate 116, which rests on the horizontal step portion, so that the horizontal step portion is sandwiched between the flange 122 and the support plate 116. Specifically, the outer box 12 has an opening at its top, and the flange 122 is located at the opening of the outer box 12. In this way, the inner box 11 can be fixed in the outer box 12 by resting on the flange 122 via the step 115, making assembly and disassembly relatively convenient. In addition, the support plate 116 is located inside the inner box 11 and is erected on the step 115. In this way, the support plate 116 seals the inner box 11, ensuring that the mixing chamber 111 is in a sealed state. The mixing chamber 111 can store foam with a certain pressure, which can prevent the foam generated in the mixing chamber 111 from leaking outward.

[0059] Please see Figures 3 to 5 In one embodiment, the top of the inner casing 11 has an opening, and a removable protective shell 117 is disposed on the edge of the opening of the inner casing 11. The first conveying assembly 13, the second conveying assembly 15, and the booster pump 14 are all mounted on the support plate 116. Multiple pipes of the first conveying assembly 13 are respectively inserted into the first chamber 121, the second chamber 112, the third chamber 113, and the mixing chamber 111. Multiple pipes of the second conveying assembly 15 are respectively inserted into the mixing chamber 111 and extend to the outside of the outer casing 12. In this way, by setting the first conveying assembly 13 and the second conveying assembly 15 on the support plate 116 and protecting them by providing a protective shell 117 on the edge of the opening of the inner casing 11, the various functional components of the foam composite cleaning assembly 10 are not only compact in layout and small in size, but also easy to maintain after opening the protective shell 117.

[0060] Please see Figures 3 to 5 and Figure 13 In one embodiment, the foam composite cleaning assembly 10 further includes a third conveying assembly 16 connected to the first chamber 121. The third conveying assembly 16 is used to introduce external water into the first chamber 121, to convey external detergent into the second chamber 112, and to introduce external foaming agent into the third chamber 113.

[0061] Furthermore, the foam composite cleaning assembly 10 also includes a first liquid level sensor 172, a second liquid level sensor (not shown in the figure), and a third liquid level sensor (not shown in the figure). The first liquid level sensor 172 is disposed in the first chamber 121 and is used to sense the liquid level height in the first chamber 121. The first liquid level sensor 172 is electrically connected to the third conveying assembly 16. The second liquid level sensor is disposed in the second chamber 112 and is used to sense the liquid level height in the second chamber 112. The second liquid level sensor is electrically connected to the third conveying assembly 16. The third liquid level sensor is disposed in the third chamber 113 and is used to sense the liquid level height in the third chamber 113. The third liquid level sensor is electrically connected to the third conveying assembly 16. Thus, the first liquid level sensor 172 can sense the liquid level in the first chamber 121 and determine whether there is enough water. When the liquid level in the first chamber 121 is lower than the first set range, it controls the third conveying component 16 to operate, adding external water to the first chamber 121. When the liquid level in the first chamber 121 is higher than the first set range, it controls the third conveying component 16 to stop adding water. Similarly, the second liquid level sensor can sense the liquid level in the second chamber 112 and determine whether there is enough detergent. When the liquid level in the second chamber 112 is lower than the second set range, it controls the third conveying component 16 to operate. The third delivery assembly 16 operates to add external detergent to the second chamber 112. When the liquid level in the second chamber 112 is higher than the second set range, the third delivery assembly 16 is controlled to stop adding detergent. The third liquid level sensor can sense the liquid level in the third chamber 113 and determine whether the foaming agent is sufficient based on the liquid level. When the liquid level in the third chamber 113 is lower than the third set range, the third delivery assembly 16 is controlled to operate to add external foaming agent to the third chamber 113. When the liquid level in the third chamber 113 is higher than the third set range, the third delivery assembly 16 is controlled to stop adding foaming agent. Thus, the water in the first chamber 121 can be controlled within the first set range. When the water in the first chamber 121 is insufficient, it can be sensed in time by the first sensor, and external water can be replenished to the first chamber 121 in time through the third delivery assembly 16. Similarly, the detergent in the second chamber 112 can be controlled within the second set range, and the foaming agent in the third chamber 113 can be controlled within the third set range.

[0062] Furthermore, the foam composite cleaning assembly 10 also includes an alarm (not shown in the figure). The alarm is electrically connected to the first sensor, the second sensor, and the third sensor, respectively. When the first sensor detects that the liquid level in the first chamber 121 is lower than a first set range, the alarm activates, prompting the operator to connect the third delivery assembly 16 to an external water source, so that the third delivery assembly 16 can deliver external water to the first chamber 121 when it is working. When the second sensor detects that the liquid level in the second chamber 112 is lower than a second set range, the alarm activates, prompting the operator to connect the third delivery assembly 16 to an external detergent storage device, so that the third delivery assembly 16 can deliver external detergent to the second chamber 112 when it is working. When the third sensor detects that the liquid level in the third chamber 113 is lower than a third set range, the alarm activates, prompting the operator to connect the third delivery assembly 16 to an external foaming agent storage device, so that the third delivery assembly 16 can deliver external foaming agent to the third chamber 113.

[0063] Furthermore, the warning device includes, but is not limited to, a display panel, a vibrator, a loudspeaker, and a warning light, etc., which can be designed according to actual needs, as long as they can serve as warnings. This allows water, detergent, and foaming agent to be replenished to the first chamber 121, the second chamber 112, and the third chamber 113 in a timely manner.

[0064] Please see Figure 3 and Figure 8 As an example, the first liquid level sensor 172, the second liquid level sensor, and the third liquid level sensor can all be specifically designed as magnetic induction floats and control boards capable of sensing the height position of the magnetic induction floats. Taking the first liquid level sensor 172 as a magnetic induction float (e.g.) Figure 8 The following explanation will be based on the control panel (not shown in the figure) as an example. The second liquid level sensor is similar to the third liquid level sensor and will not be described in detail. A limiting groove is provided on the inner wall of the outer casing 12, or a guide shell is provided in the inner casing 11. The guide shell has a limiting groove communicating with the outer casing 12. The magnetic induction float can move up and down along the limiting groove. During the water filling process, when the magnetic induction float moves upward to the first limit height position, it can be sensed by the control panel, and the control panel will correspondingly control the third conveying component 16 to stop filling water. Conversely, during the cleaning of the range hood, as the water in the first chamber 121 gradually depletes, the magnetic induction float will move downward to the second limit height position, which can also be sensed by the control panel, and the control panel will correspondingly control the third conveying component 16 to fill water.

[0065] Please see Figure 3 , Figure 4 , Figure 11 and Figure 12In one embodiment, the foam composite cleaning assembly 10 further includes a pressure sensor 18, a pressure relief switch 19, and a controller (not shown). The pressure sensor 18 is used to sense the pressure in the mixing chamber 111, and the pressure relief switch 19 is disposed on the mixing chamber 111 to control whether the mixing chamber 111 is connected to the outside. The pressure sensor 18, the pressure relief switch 19, and the booster pump 14 are all electrically connected to the controller.

[0066] As an example, the pressure sensor 18 may be a push button mounted on the wall of the mixing chamber 111, or other sensing elements capable of sensing the pressure inside the mixing chamber 111. Furthermore, the pressure relief switch 19 may be, for example, a pressure relief solenoid valve, or other control switch. Thus, when hot water, detergent, and foaming agent are mixed in the mixing chamber 111 in proportion, the booster pump 14 starts working, pressurizing the mixture formed by the hot water, detergent, and foaming agent in the sealed mixing chamber 111, providing energy to generate more foam. When the pressure inside the mixing chamber 111 reaches the upper limit of the required value, the air pressure triggers the pressure sensor 18, causing it to generate a signal that cuts off the power to the booster pump 14 and stops pressurizing the mixing chamber 111; when the pressure inside the mixing chamber 111 drops to the lower limit of the required value, the air pressure also triggers the pressure sensor 18, causing it to generate a signal to turn on the power to the booster pump 14 and resume pressurizing the mixing chamber 111. In addition, under abnormal conditions, when the air pressure in the mixing chamber 111 reaches the danger limit, the air pressure triggers the pressure sensor 18 to generate a signal to open the pressure relief switch 19, so that the air pressure in the mixing chamber 111 can be released to avoid danger.

[0067] Please see Figure 11 and Figure 12 , Figure 11 A schematic diagram of the structure of a pressure sensor 18 according to an embodiment of the present invention is shown. Figure 12 It shows Figure 11A cross-sectional structural schematic diagram is provided. The pressure sensor 18 includes a housing 181, a diaphragm valve 182, an induction coil 183, a metal rod 184, an elastic element 185, and a first connector tube 186 and a second connector tube 187 disposed on the housing 181. The diaphragm valve 182 is disposed inside the housing 181, dividing the housing 181 into a first chamber 1811 and a second chamber 1812. The first chamber 1811 is connected to the mixing chamber 111 through the first connector tube 186, and the second chamber 1812 is connected to the external environment through the second connector tube 187. The induction coil 183 is disposed on the inner wall of the housing 181, and the metal rod 184 is disposed on the diaphragm valve 182. The metal rod 184 is connected to the inner wall of the housing 181 through the elastic element 185, and the metal rod 184 is located inside the induction coil 183. When the pressure inside the mixing chamber 111 changes, the diaphragm valve 182 will move accordingly, which will drive the metal rod 184 to move. When the metal rod 184 moves, it will generate an induced current in the induction coil 183. The induction coil 183 sends the induced current to the controller, which can then obtain the position of the metal rod 184 and calculate the pressure inside the mixing chamber 111.

[0068] Please refer to the following: Figure 1 In one embodiment, a range hood includes a foam composite cleaning component 10 as described in any of the above embodiments, and a range hood body 20, wherein the foam composite cleaning component 10 is disposed on the range hood body 20.

[0069] In the aforementioned range hood, when cleaning is required, water, detergent, and foaming agent are delivered to the mixing chamber 111 via the first conveying component 13. Under the pressure of the booster pump 14, the water, detergent, and foaming agent are thoroughly mixed to generate a large amount of foam. The second conveying component 15 then outputs the generated foam to the inner wall of the range hood for cleaning. Because the detergent is thoroughly mixed into the foam in the mixing chamber 111, the foam effectively cleans the inner wall of the range hood, ensuring high cleaning efficiency.

[0070] Please see Figure 13 , Figure 13A simplified schematic diagram is shown illustrating the connection of a first conveying assembly 13, a second conveying assembly 15, a third conveying assembly 16, and a booster pump 14 to a first chamber 121, a second chamber 112, a third chamber 113, and a mixing chamber 111, respectively, according to an embodiment of the present invention. In one example, the first conveying assembly 13 includes a first main pipeline 131, a first pump body 132, a first branch pipeline 133, a second branch pipeline 134, a third branch pipeline 135, a first solenoid valve 136, a second solenoid valve 137, a second solenoid valve 137, and a third solenoid valve 138, all connected in series on the first branch pipeline 133 and the third branch pipeline 135. One end of the first branch pipe 133 is connected to the first chamber 121, one end of the second branch pipe 134 is connected to the second chamber 112, and one end of the third branch pipe 135 is connected to the third chamber 113. The other ends of the first branch pipe 133, the second branch pipe 134, and the third branch pipe 135 are all connected to one end of the first main pipe 131. The other end of the first main pipe 131 is connected to the mixing chamber 111. Thus, when it is necessary to transfer hot water from the first chamber 121 to the mixing chamber 111, the first solenoid valve 136 and the first pump body 132 are opened, and the second solenoid valve 137 and the third solenoid valve 138 are closed, thereby transferring the hot water from the first chamber 121 to the mixing chamber 111. The method for transferring detergent and foaming agent to the mixing chamber 111 is similar and will not be described further here.

[0071] Please see Figure 13 Furthermore, the second delivery assembly 15 includes a second pump body 151, an output pipe 152, a fourth branch pipe 153, a fifth branch pipe 155, and a fourth solenoid valve 154 connected in series on the fourth branch pipe 153. The second pump body 151 is connected in series to the output pipe 152, and one end of the fourth branch pipe 153 is connected to the mixing chamber 111. The other end of the first branch pipe 133 is also connected to one end of the fifth branch pipe 155. The other ends of the fourth branch pipe 153 and the fifth branch pipe 155 are both connected to the output pipe 152. Thus, when it is necessary to output the foam in the mixing chamber 111, the second pump body 151 and the fourth solenoid valve 154 are opened, and the remaining solenoid valves are closed; when it is necessary to output the hot water in the first chamber 121, the second pump body 151 and the first solenoid valve 136 are opened, and the remaining solenoid valves are closed.

[0072] Please see Figure 13Furthermore, the third delivery assembly 16 includes an input pipe 161 and a third pump body 162 connected in series on the input pipe 161. One end of the input pipe 161 is connected to a water source (not shown), a detergent storage device (not shown), or a foaming agent storage device (not shown). The other end of the input pipe 161 is connected to the other end of the first branch pipe 133, the other end of the second branch pipe 134, and the other end of the third branch pipe 135, respectively. Thus, when water needs to be added to the first chamber 121, the first solenoid valve 136 and the third pump body 162 are opened, and the second solenoid valve 137 and the third solenoid valve 138 are closed, allowing water to be delivered to the first chamber 121 through the third pump body 162 and the input pipe 161. Adding detergent to the second chamber 112 is similar to adding foaming agent to the third chamber 113, and will not be described further here.

[0073] As an optional solution, the first conveying component 13 is not limited to the above-described configuration. For example, it can also be configured as three pumps corresponding to the first chamber 121, the second chamber 112, and the third chamber 113, respectively, and three conveying pipelines corresponding to the three pumps, that is, water, detergent or foaming agent are conveyed to the mixing chamber 111 through the corresponding conveying pipelines.

[0074] As an optional solution, the second conveying component 15 is not limited to the above-described configuration. For example, it can also be configured as two pumps corresponding to the first chamber 121 and the mixing chamber 111 respectively, and two conveying pipelines corresponding to the two pumps, that is, hot water and foam are output to the outside through the corresponding conveying pipelines.

[0075] As an optional solution, the third conveying component 16 is not limited to the above-described configuration. For example, it can also be configured as three pumps corresponding to the first chamber 121, the second chamber 112, and the third chamber 113, respectively, and three conveying pipelines corresponding to the three pumps. That is, water, detergent, or foaming agent are conveyed to the first chamber 121, the second chamber 112, and the third chamber 113 respectively through the corresponding conveying pipelines.

[0076] Please see Figures 1 to 3 and Figure 13 In one embodiment, a cleaning method for a range hood according to any of the above embodiments includes the following steps:

[0077] Foam is generated by the foam composite cleaning component 10 and sprayed onto the inner wall of the range hood body 20, so that the foam completely covers the inner wall of the range hood body 20. Then, hot water is used to clean the inner wall of the range hood body 20.

[0078] The above-mentioned cleaning method for range hoods involves first spraying foam containing detergent onto the inner wall of the range hood body 20, specifically the inner wall of the fan housing and the impeller, completely covering the inner wall of the fan housing and the surface of the impeller, soaking the oil stains on the surface, greatly reducing the adhesion of the oil stains, and then spraying hot water to rinse the surface, achieving the cleaning effect of soaking and rinsing, truly achieving thorough cleaning of oil stains, and avoiding defects such as the inner wall of the fan housing and the impeller not being cleaned properly due to the strong adhesion of oil stains.

[0079] Please see Figures 1 to 3 and Figure 13 In one specific embodiment, when the cleaning function is activated, the second conveying component 15 starts working. The foam in the mixing chamber 111 is output outward through the second conveying component 15 and enters the inner wall of the range hood body 20, thereby spraying the foam onto the inner wall of the range hood body 20. During the continuous spraying of foam, the impeller rotates slowly, so that the foam completely covers the inner wall surface of the air handling unit and the impeller surface without leaving any dead corners. After the foam spraying has fully covered the surface for a certain period of time, the second conveying component 15 stops working. After the foam on the inner wall surface of the range hood body 20 has been soaked for a certain period of time, the second conveying component 15 starts working again, so that the foam in the mixing chamber 111 re-enters the range hood body 20 to rinse the foam on the inner wall surface of the air handling unit and the impeller surface. At the same time, the impeller rotates slowly. After rinsing is completed, the second conveying component 15 stops working, and the impeller rotates at medium speed to enter the spin-drying state.

[0080] It should be noted that when describing a component being connected to another component, or a component being mounted on another component, it can be understood that the connection between the two components can specifically involve using mounting components such as bolts, screws, pins, and rivets, or using snap-fit, welding, or integral molding methods for fixation. Integral molding methods can employ processes such as extrusion, casting, press fitting, and injection molding.

[0081] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0082] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

[0083] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0084] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0085] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0086] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0087] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

Claims

1. A foam composite cleaning component, characterized in that, The foam composite cleaning assembly (10) includes: The box body has a mixing chamber (111); the box body includes an inner box (11) and an outer box (12); the inner box (11) is placed inside the outer box (12); both the outer box (12) and the inner box (11) are box structures with open tops, the outer box (12) has a flange (122) at its edge, and the inner box (11) has an annular step (115) at its edge, the horizontal step portion of the step (115) resting on the flange (122); the inner box (11) is also provided with a support plate (116), the support plate (116) resting on the horizontal step portion, so that the horizontal step portion is sandwiched between the flange (122) and the support plate (116); A first delivery assembly (13) and a booster pump (14) are connected to the mixing chamber (111). The first delivery assembly (13) is used to deliver water, detergent, and foaming agent into the mixing chamber (111). The booster pump (14) is used to introduce external gas into the mixing chamber (111) to increase the pressure inside the mixing chamber (111). The second conveying assembly (15) is connected to the mixing chamber (111) for discharging the foam generated by mixing water, detergent and foaming agent in the mixing chamber (111) to the outside. The housing also has a first chamber (121), a second chamber (112), and a third chamber (113); the first chamber (121) is used to hold water; the second chamber (112) is used to hold detergent; the third chamber (113) is used to hold foaming agent; the second chamber (112), the third chamber (113), and the mixing chamber (111) are all formed in the inner box (11), and the first chamber (121) is formed in the outer box (12); the first conveying assembly (13), the second conveying assembly (15), and the booster pump (14) are all mounted on the support plate (116).

2. The foam composite cleaning component according to claim 1, characterized in that, The first delivery assembly (13) is used to deliver water in the first chamber (121) to the mixing chamber (111), detergent in the second chamber (112) to the mixing chamber (111), and foaming agent in the third chamber (113) to the mixing chamber (111).

3. The foam composite cleaning component according to claim 2, characterized in that, The foam composite cleaning assembly (10) further includes a heating device (171) disposed in the outer casing (12); the heating device (171) is used to heat the water in the outer casing (12); the second conveying assembly (15) is also used to output the hot water in the first chamber (121) to the outside.

4. The foam composite cleaning assembly according to claim 2, characterized in that, The top of the inner box (11) is provided with an opening, and a detachable protective shell (117) is provided on the edge of the opening of the inner box (11).

5. The foam composite cleaning assembly according to claim 4, characterized in that, Multiple pipes of the first conveying assembly (13) are respectively inserted into the first chamber (121), the second chamber (112), the third chamber (113) and the mixing chamber (111); multiple pipes of the second conveying assembly (15) are respectively inserted into the mixing chamber (111) and extend to the outside of the outer casing (12).

6. The foam composite cleaning assembly according to claim 2, characterized in that, The foam composite cleaning assembly (10) further includes a third conveying assembly (16) connected to the first chamber (121); the third conveying assembly (16) is used to input water from the outside into the first chamber (121), to convey detergent from the outside into the second chamber (112), and to input foaming agent from the outside into the third chamber (113).

7. The foam composite cleaning assembly according to claim 6, characterized in that, The foam composite cleaning assembly (10) further includes a first liquid level sensor (172), a second liquid level sensor, and a third liquid level sensor; the first liquid level sensor (172) is disposed in the first chamber (121) and is used to sense the liquid level height in the first chamber (121), and the first liquid level sensor (172) is electrically connected to the third conveying assembly (16); the second liquid level sensor is disposed in the second chamber (112) and is used to sense the liquid level height in the second chamber (112), and the second liquid level sensor is electrically connected to the third conveying assembly (16); the third liquid level sensor is disposed in the third chamber (113) and is used to sense the liquid level height in the third chamber (113), and the third liquid level sensor is electrically connected to the third conveying assembly (16).

8. The foam composite cleaning assembly according to claim 1, characterized in that, The foam composite cleaning assembly (10) also includes a pressure sensor (18), a pressure relief switch (19), and a controller; the pressure sensor (18) is used to sense the pressure in the mixing chamber (111), and the pressure relief switch (19) is installed on the mixing chamber (111) to control whether the mixing chamber (111) is connected to the outside; the pressure sensor (18), the pressure relief switch (19), and the booster pump (14) are all electrically connected to the controller.

9. A range hood, characterized in that, The range hood includes a foam composite cleaning component (10) as described in any one of claims 1 to 8, and also includes a range hood body (20), wherein the foam composite cleaning component (10) is disposed on the range hood body (20).

10. A cleaning method for a range hood as described in claim 9, characterized in that, The cleaning method for the range hood includes the following steps: Foam is generated by the foam composite cleaning component (10) and sprayed onto the inner wall of the range hood body (20) so that the foam completely covers the inner wall of the range hood body (20). Then, hot water is used to clean the inner wall of the range hood body (20).

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