CN113598639B - Double-pump hand dryer - Google Patents

Abstract

The invention discloses a dual-pump type hand dryer, comprising a casing, a jet pump and an exhaust pump. The casing is provided with a first airflow channel and a second airflow channel, and the jet pump is arranged in the first airflow channel for generating a first airflow The high-pressure airflow, the exhaust pump is arranged in the second airflow channel to generate the second high-pressure airflow, wherein the flow rate of the second high-pressure airflow is greater than the flow rate of the first high-pressure airflow, so as to absorb the first high-pressure airflow and external airflow. Thereby, the dual-pump hand dryer of the present invention can effectively restrain the spread of germs, and protect the safety of users and the safety of the use environment.

Description

Dual Pump Hand Dryer

technical field

The present invention relates to a hand dryer, in particular to a double-pump type hand dryer.

Background technique

Hand dryers, also known as hand dryers, when people wash their hands and put their hands under the air outlet of the hand dryer, the hand dryer will send out wind to quickly dry the hands.

However, the existing hand dryers are very easy to grow germs inside, so these germs are likely to be brought to people's hands, clothes or the environment when the hand dryer is working. Therefore, the existing hand dryers have the risk of spreading germs, which is not good for people's health.

In addition, when the hand dryer is drying people's hands, it is easy to blow germs on people's hands onto clothes, faces, or the environment. It's also not good for people's health.

Therefore, the main purpose of the present invention is to provide a dual-pump type hand dryer to solve the above problems.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a dual-pump type hand dryer, which can effectively curb the spread of germs and protect the safety of users and the safety of the use environment.

To achieve at least one of the aforementioned advantages or other advantages, an embodiment of the present invention provides a dual-pump type hand dryer. The dual-pump hand dryer includes a casing, a jet pump and an exhaust pump, the casing has a first air inlet, a first air outlet, a second air inlet and a second air outlet, wherein the first air inlet and the A first airflow channel is formed between the first exhaust ports, and a second airflow channel is formed between the second intake port and the second exhaust port. The jet pump is arranged in the first airflow channel for generating a first high-pressure airflow, and the exhaust pump is arranged in the second airflow channel for generating a second high-pressure airflow, wherein the flow rate of the second high-pressure airflow is greater than the flow rate of the first high-pressure airflow , so that the hand dryer can absorb the first high-pressure airflow blown to the hand into the second airflow channel through the second high-pressure airflow, so as to avoid the spread of germs.

In some embodiments, the dual-pump hand dryer further includes a water storage tank, the housing has a water outlet, the water storage tank is disposed in the second air flow channel and coupled to the second air inlet, and is used for receiving dripping from the hand dryer. For the water coming in, the drain port is arranged below the water storage tank to facilitate the discharge of the water in the water storage tank.

In some embodiments, the dual-pump hand dryer further includes an infrared sensor coupled to the first exhaust port for sensing a human hand to activate the dual-pump hand dryer.

In some embodiments, the dual-pump hand dryer further includes an ultraviolet lamp disposed in the second airflow channel and located between the second air inlet and the exhaust pump, for sterilizing the gas entering the second airflow channel.

In some embodiments, the dual-pump hand dryer further includes a filter screen disposed in the second airflow channel and between the second air inlet and the exhaust pump, for filtering the gas entering the second airflow channel.

In some embodiments, the dual-pump hand dryer further includes a warmer disposed in the first airflow channel and between the first exhaust port and the jet pump, for warming the first high-pressure airflow to enhance drying Efficiency of the hand. Or when the ambient air temperature is too low, to prevent the hand from freezing.

In some embodiments, the dual-pump hand dryer further includes a filter device, disposed in the first airflow channel and between the first air inlet and the air jet pump, for sterilizing and sterilizing the gas entering the first airflow channel. filter.

In some embodiments, the flow rate of the second high pressure gas stream is 1.3 times the flow rate of the first high pressure gas stream.

In some embodiments, the largest dimension of the first exhaust port is smaller than the largest dimension of the first air intake.

In some embodiments, the size of the first exhaust port gradually increases along the flow direction of the first high pressure airflow.

Therefore, by using the dual-pump type hand dryer provided by the present invention, the spread of germs can be effectively restrained, and the safety of users and the safety of the use environment can be protected.

The above description is only an overview of the technical solutions of the present invention, in order to be able to understand the technical means of the present invention more clearly, it can be implemented according to the content of the description, and in order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand , the following lists the preferred embodiments, and with the accompanying drawings, the detailed description is as follows.

Description of drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the present application, constitute a part of the specification, are used to illustrate the embodiments of the present application, and together with the written description, serve to explain the principles of the present application. Obviously, the accompanying drawings in the following description are only some embodiments of the present application, and are not intended to limit the embodiments of the present invention. Other figures may also be derived from these figures.

The accompanying drawings include:

1 is an exploded schematic view of the dual-pump hand dryer of the present invention; and

2 is a schematic cross-sectional view of the dual-pump hand dryer of the present invention.

Note in the drawings: 10-dual pump hand dryer; 12-shell; 14-jet pump; 16-exhaust pump; 18-water storage tank; 20-first infrared sensor; 21-second infrared sensor; 22-ultraviolet lamp 26-filter device; 28-first airflow channel; 30-second airflow channel; 32-hand; 122-first air inlet; 124-first exhaust port; 126-second air inlet; 128 - 2nd exhaust port; 182 - Drain port.

Detailed ways

Specific structural and functional details disclosed herein are merely representative and for purposes of describing exemplary embodiments of the present invention. However, the present invention may be embodied in many alternative forms and should not be construed as limited only to the embodiments set forth herein.

In the description of the present invention, it should be understood that the terms "center", "lateral", "top", "bottom", "left", "right", "vertical", "horizontal", "top", " The orientation or positional relationship indicated by "bottom", "inside", "outside", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the indicated device or The components must have a particular orientation, or be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first" or "second" may expressly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "plurality" means two or more. In addition, the term "comprising" and any variations thereof mean "at least including".

In the description of the present invention, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of the two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

The terminology used herein is for the purpose of describing specific embodiments only and is not intended to limit the exemplary embodiments. As used herein, the singular forms "a", "an" and "an" are intended to include the plural unless the context clearly dictates otherwise. It should also be understood that the terms "comprising" and/or "comprising" as used herein specify the presence of stated features, integers, steps, operations, units and/or components, but do not preclude the presence or addition of one or more Other features, integers, steps, operations, units, components and/or combinations thereof.

Please refer to FIGS. 1 and 2 at the same time. FIG. 1 is an exploded schematic view of the dual-pump hand dryer 10 of the present invention, and FIG. 2 is a cross-sectional schematic view of the dual-pump hand dryer 10 of the present invention. In order to achieve at least one of the aforementioned advantages or other advantages, an embodiment of the present invention provides a dual-pump hand dryer 10. As shown in FIG. 1 and FIG. 2, the dual-pump hand dryer 10 includes a housing 12, a sprayer Air pump 14 , exhaust pump 16 , water storage tank 18 , first infrared sensor 20 , second infrared sensor 21 , ultraviolet lamp 22 and filter device 26 .

The casing 12 is provided with a first air inlet 122 , a first air outlet 124 , a second air inlet 126 and a second air outlet 128 , wherein the first air inlet 122 and the first air outlet 124 are formed between the first air inlet 122 and the first air outlet 124 . A second air passage 30 is formed between the first air passage 28 , the second air inlet 126 and the second air outlet 128 . The first airflow channel 28 and the second airflow channel 30 are used to circulate gas.

The jet pump 14 is disposed in the first airflow channel 28 for generating a first high-pressure airflow, and the first high-pressure airflow is used for drying the hand 32 . The exhaust pump 16 is disposed in the second airflow channel 30 for generating a second high-pressure airflow. Because the flow rate of the second high-pressure airflow is greater than the flow rate of the first high-pressure airflow, the second high-pressure airflow can absorb the first high-pressure airflow blown to the hand 32 into the second airflow channel 30 to prevent germs from spreading and endangering the human body Safety. Moreover, since the jet pump 14 and the exhaust pump 16 are respectively disposed in the first airflow channel 28 and the second airflow channel 30, mutual interference between the jet pump 14 and the exhaust pump 16 can be avoided.

The water storage tank 18 is disposed in the second airflow channel 30 and installed below the second air inlet 126 , that is, below the drying hands 32 , and is used to receive water dripping down when drying the hands 32 . In addition, the casing 12 is also provided with a drain port 182 . The drain port 182 is disposed below the water storage tank 18 and communicated with the water storage tank 18 to facilitate the discharge of the water in the water storage tank 18 .

The first infrared sensor 20 is disposed at the first exhaust port 124 , that is, above the drying hand 32 , and is used for sensing the hand 32 to activate the dual-pump hand dryer 10 for drying operation.

The second infrared sensor 21 is disposed at the first exhaust port 124 for sensing a person to preheat the dual-pump hand dryer 10 in advance, so that when a person approaches the dual-pump hand dryer 10 and wants to dry their hands At 32:00, it will be detected in advance by the second infrared sensor 21, and the dual-pump hand dryer 10 can directly dry the hands 32 without starting up slowly, which reduces the time for drying the hands 32.

The ultraviolet lamp 22 is arranged in the second airflow channel 30, and is located between the second air inlet 126 and the exhaust pump 16, and is used to sterilize the gas entering the second airflow channel 30 to ensure that the second exhaust port 128 Expel clean air.

A filter screen (not shown) is arranged in the second airflow channel 30, and is located between the second air inlet 126 and the exhaust pump 16, and is below the ultraviolet lamp 22, and is used to filter the gas entering the second airflow channel 30, and further It is ensured that clean air is exhausted from the second exhaust port 128 .

A warmer (not shown) is disposed in the first airflow channel 28 and located between the first exhaust port 124 and the jet pump 14 for warming the first high-pressure airflow to enhance the drying efficiency of the hands 32 .

The filter device 26 is arranged in the first airflow channel 28 and between the first air inlet 122 and the jet pump 14, and is used to sterilize and filter the gas entering the first airflow channel 28 to ensure drying of the hands 32. The first high pressure airflow is clean.

The flow rate of the aforementioned high-pressure gas flow refers to the volume of gas flowing through the gas flow channel per unit time. In this embodiment, the flow rate of the second high-pressure airflow is 1.3 times the flow rate of the first high-pressure airflow. Specifically, assuming that the flow rate of the first high-pressure airflow is 10 m ³ /s, the flow rate of the second high-pressure airflow is 13 m ³ /s. However, the present case is not limited to this, as long as the flow rate of the second high-pressure airflow is greater than the flow rate of the first high-pressure airflow, the second high-pressure airflow can absorb the first high-pressure airflow blown to the hand 32 into the second airflow channel 30 , to avoid the spread of germs to danger to personal safety.

In this embodiment, the jet pump 14 and the exhaust pump 16 are driven by motors to provide sufficient wind power. However, the present case is not limited to this, and other types of pumps such as plunger pumps can also provide wind power.

In addition, when the second airflow channel 30 and the first airflow channel 28 are designed, the maximum size of the intake port is larger than the maximum size of the exhaust port. This arrangement can increase the flow rates of the first high-pressure airflow and the second high-pressure airflow, so that the The air supply burden of the jet pump 14 and the exhaust pump 16 is reduced, and energy consumption is reduced. However, the present case is not limited to this, and the maximum size of the air inlets of the second air passage 30 and the first air passage 28 may also be smaller than or equal to the maximum size of the air outlet.

Also, in one embodiment, the size of the first exhaust port 124 is gradually increased along the opposite flow direction of the first high-pressure airflow.

The overall operation process of the dual-pump hand dryer 10 is as follows: when the user places the hand 32 at the first exhaust port 124 , the first infrared sensor 20 will sense the hand 32 and activate the dual-pump hand dryer 10 to perform the operation. During the drying operation, the jet pump 14 and the exhaust pump 16 start to operate. The jet pump 14 ejects the first high-pressure airflow purified by the filter device 26 from the first exhaust port 124 to the hands 32 to dry the hands 32. The exhaust pump The gas at the second air inlet 126 is sucked into the second air flow channel 30 through the second high-pressure air flow, and then discharged from the second air outlet 128 after being purified by the ultraviolet lamp 22 and the filter screen.

During this process, because the flow rate of the second high-pressure airflow is greater than the flow rate of the first high-pressure airflow, the second high-pressure airflow can absorb the first high-pressure airflow blown to the hand 32 and the gas near the hand 32 to the second high-pressure airflow. In the airflow channel 30 , the spread of germs is prevented to endanger personal safety.

Furthermore, this one-exhaust-one-jet method can form a low-pressure area at the first exhaust port 124 and the second air inlet 126, and according to the characteristics of the gas flowing from high pressure to low pressure, it is beneficial to strengthen the first high-pressure airflow. flow to reduce the time it takes to dry hands and improve efficiency.

In addition, in one embodiment, the jet pump 14 and the exhaust pump 16 may also be connected end to end, that is, the first air inlet 122 and the second air outlet 128 are communicated to achieve the effect of circulating airflow.

To sum up, the dual-pump hand dryer 10 provided by the present invention can effectively curb the spread of germs and protect personal safety.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form. Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. The technical personnel, without departing from the scope of the technical solution of the present invention, can make some changes or modifications by using the methods and technical contents disclosed above to be equivalent embodiments of equivalent changes, provided that they do not depart from the content of the technical solutions of the present invention, Any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solutions of the present invention.

Claims (10)

1. A dual pump hand dryer, comprising:

a housing having a first inlet, a first outlet, a second inlet and a second outlet, a first air flow path being formed between the first inlet and the first outlet, and a second air flow path being formed between the second inlet and the second outlet;

the jet pump is arranged in the first air flow channel and is used for generating a first high-pressure air flow; and

the air exhaust pump is arranged in the second air flow channel and used for generating a second high-pressure air flow;

wherein the flow rate of the second high pressure gas stream is greater than the flow rate of the first high pressure gas stream, and the second high pressure gas stream is used for absorbing the first high pressure gas stream to the second gas stream channel.

2. The dual pump hand dryer of claim 1, further comprising a water reservoir, the housing having a drain opening, the water reservoir being disposed in the second airflow path and coupled to the second air inlet, the drain opening being disposed below the water reservoir.

3. The dual pump hand dryer of claim 1, further comprising an infrared sensor coupled to the first exhaust port.

4. The dual pump hand dryer of claim 1, further comprising an ultraviolet lamp disposed in the second gas flow path between the second gas inlet and the exhaust pump.

5. The dual pump hand dryer of claim 1, further comprising a filter screen disposed in the second air flow path between the second air inlet and the exhaust pump.

6. The dual pump hand dryer of claim 1, further comprising a heater disposed in the first air flow passage between the first exhaust port and the jet pump.

7. The dual pump hand dryer of claim 1, further comprising a filter disposed in the first air flow passage between the first air inlet and the air jet pump.

8. The dual pump hand dryer of claim 1, wherein the flow rate of the second high pressure gas stream is 1.3 times the flow rate of the first high pressure gas stream.

9. A dual pump hand dryer according to claim 1 wherein the maximum dimension of the first exhaust port is less than the maximum dimension of the first inlet port.

10. The dual pump hand dryer of claim 1, wherein the first exhaust port increases in size in the opposite direction of the first high pressure stream.

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