TWI645820B - A lower air intake noise dryers - Google Patents

A lower air intake noise dryers Download PDF

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Publication number
TWI645820B
TWI645820B TW106129689A TW106129689A TWI645820B TW I645820 B TWI645820 B TW I645820B TW 106129689 A TW106129689 A TW 106129689A TW 106129689 A TW106129689 A TW 106129689A TW I645820 B TWI645820 B TW I645820B
Authority
TW
Taiwan
Prior art keywords
casing
narrow air
narrow
air inlet
disposed
Prior art date
Application number
TW106129689A
Other languages
Chinese (zh)
Other versions
TW201912087A (en
Inventor
劉甚珍
鄭慶豐
Original Assignee
和光工業股份有限公司
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Filing date
Publication date
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Priority to TW106129689A priority Critical patent/TWI645820B/en
Application granted granted Critical
Publication of TWI645820B publication Critical patent/TWI645820B/en
Publication of TW201912087A publication Critical patent/TW201912087A/en

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Abstract

A hand dryer capable of reducing intake air noise, comprising a casing, a deflector and a gas supply module. The casing has a receiving space and a plurality of narrow air inlets. The deflector is disposed in the receiving space but is not in contact with the casing. The deflector has a plurality of narrow air guiding ports, and the gas provides a mode. The group is disposed in the accommodating space, and includes a wind drum that extracts a gas in the accommodating space to generate a hand airflow after starting, and a wind guiding member that connects the wind drum to receive the hand airflow. The interval between the tuyere and the narrow air guiding port interferes with the transmission of sound waves formed by the gas flowing between the narrow air inlet and the narrow air guiding port, and the noise generation can be greatly reduced.

Description

A dryer that can reduce the noise of entering air

The invention relates to a dryer for reducing the noise of entering air, in particular to a dryer equipped with a deflector in the casing and corresponding to the air inlet.

With the improvement of cultural literacy, the hygiene details in daily life are gradually being paid more attention, and the most prominent places can be seen from the public bathroom places that are generally used by the general public, in order to enable users to wash their hands. Quickly remove the water remaining in the hands. Generally, there are hand towels (towels) in the public bathing places, but the environmental awareness is getting more and more attention, and the forest resources are highly valued, and the disposable paper (towels) is highlighted. It is not realistic, therefore, the dryer has become a trend, and is widely used in public fields to solve the needs of people to dry quickly.

In view of this, after the high economic development of the previous century, the population has evolved into a number of mega cities after the concentration of the city. People often pursue speed and efficiency as the primary task. At present, commercially available hand dryers are not unavoidably aimed at accelerating the completion of hand drying efficiency. However, the high efficiency and noise is the cost of the "difficulties in industrial design". It is necessary to know that in the process of increasing the speed and speeding up the operation of the motor to provide gas. Inevitably, when the gas is extracted, the friction generated by the dryer-related mechanism is generated by the wind and the noise is cut. If the motor speed is deliberately reduced to reduce the wind-cut noise of the dryer operation, it is necessary to increase the working time of the dryer to achieve Absolute hand drying.

The common technology disclosed in the US No. 20130111778 and the Chinese No. 201194769 is that a hand dryer includes a motor and a wind path structure, wherein the air passage structure has an air inlet and a plurality of air inlets are provided at the air inlet. a water blocking piece, and a gap is formed between the water blocking piece and another adjacent water blocking piece, and the gas enters the air path structure from the gaps when the baking machine is in operation, because the air path is smoother Can reduce the noise generated by work.

In addition, a hand dryer as shown in Chinese No. 105919494 has a casing and a motor disposed in the casing, the casing is provided with a first air inlet, the motor has a second air inlet and a first An air inlet and an air inlet passage connected to the second air inlet, and the air inlet passage has a baffle disposed on the air inlet passage and a gap defined by the baffle and an inner wall of the air inlet passage. The baffle is used to reflect the noise of the motor running outward along the air inlet passage, and the airflow can be dispersed and gathered through the gap to generate a rectifying effect and reduce the noise generated by the airflow.

However, with the improvement of the structure of the wind drum, it is difficult to achieve the highest demands of “very quiet”. Therefore, how to balance the efficiency of the hand dryer and the problem of noise reduction is a major issue in industrial design. .

The main object of the present invention is to improve the air inlet structure of the existing hand dryer, thereby achieving the problem of reducing noise.

To achieve the above object, the present invention provides a hand dryer that can reduce air intake noise, and includes a casing, a deflector, and a gas supply module. The casing has an accommodating space and a plurality of narrow air inlets connecting the accommodating space and the outer portion of the casing, the casing defining an air inlet for the accommodating space and having the narrow air inlets surface. The baffle is disposed in the accommodating space and is opposite The windward surface should be assembled with the casing, the deflector is not in contact with the air inlet surface, and the deflector has a plurality of narrow air guiding openings facing the air inlet, and the projection of each of the narrow air guiding openings is located Adjacent to the narrow air inlet. The gas supply module is disposed in the accommodating space, and the gas supply module includes a wind drum that starts to extract gas in the accommodating space to generate a hand airflow, and connects the air drum to receive the hand airflow. The air guiding member is exposed at the end of the casing, and the baking machine has a gas that is external to the casing and sequentially enters the air drum through the narrow air inlet and the narrow air guiding port after the wind drum is started. Wind path.

In one embodiment, the baffle has a plate body having the narrow air guiding ports and an extending piece extending from the plate body and mounted to the casing.

In one embodiment, the baffle has at least one support post disposed on a side facing the air inlet surface and protruding toward the casing to be connected to the casing.

In an embodiment, the narrow air inlets are arranged in the first matrix in the casing, and the narrow air guiding ports are arranged on the deflector in a second matrix arrangement.

In an embodiment, the narrow air inlets are disposed in the casing in a first extending direction, and the narrow air guiding openings are disposed on the deflector in a second extending direction, so that the narrow air inlets are The projection position of the air inlet surface does not overlap the narrow air guiding port.

The embodiment of the present invention has the following features as compared with the prior art: the present invention is provided with the deflector facing the air inlet surface but not in contact with the air inlet surface through the air guiding surface. The narrow air guiding openings on the plate and the narrow air inlets on the air inlet surface form a double slit structure, so that the noise of the gas entering the air inlet path when the hand dryer enters the air may be caused by noise The narrow air guiding ports and the narrow air inlets are weakened, thereby reducing noise during air intake.

10‧‧‧Bakes

11‧‧‧Shell

111‧‧‧ accommodating space

112‧‧‧Small air inlet

113‧‧‧ into the wind

114‧‧‧First extension direction

12‧‧‧Baffle

121‧‧‧ board

122‧‧‧Small air vents

123‧‧‧Extension

124‧‧‧Support column

125‧‧‧second extension direction

126‧‧‧Installation Department

13‧‧‧Gas supply module

131‧‧‧ wind drum

132‧‧‧air guides

133‧‧‧Wind drum inlet

14‧‧‧Open and close sensing elements

20‧‧‧ gas

30‧‧‧Hand drying

A‧‧‧ interval

Figure 1 is a schematic perspective view of the present invention.

Figure 2 is an exploded perspective view of the present invention.

Figure 3 is a schematic front cross-sectional view of the present invention.

Figure 4 is a schematic cross-sectional view of the right side of the present invention.

Figure 5 is a top plan view of the present invention.

Figure 6 is a partial right side cross-sectional view of the present invention.

The detailed description and the technical content of the present invention are as follows: Referring to FIG. 1 to FIG. 3, the present invention provides a hand dryer 10 capable of reducing air intake noise, comprising a casing 11 and a deflector 12, A gas supply module 13 and an opening and closing sensing element 14 are provided. The casing 11 provides the baffle 12, the gas supply module 13, and the opening and closing sensing element 14 disposed therein. The opening and closing sensing element 14 is mounted in the casing 11, but the opening and closing sensing element After the assembly is completed, the appearance of the casing 11 can still be directly observed. Moreover, the casing 11 may be assembled from a plurality of half-shells, and the casing 11 defines an accommodation space 111. Furthermore, the casing 11 is provided with a plurality of narrow air inlets 112 for connecting the accommodating space 111 to the outer region of the casing 11, and the present invention defines one side of the accommodating space 111 and is provided with the narrow portions. The air inlet surface 113 of the air inlet 112. Therefore, the present embodiment of the present invention is such that the air inlet surface 113 is located at the bottom edge of the casing 11, but the invention is not limited thereto, and the narrow air inlets 112 can be disposed according to implementation requirements. Different faces of the casing 11.

Referring to FIG. 3, FIG. 4 and FIG. 6, the deflector 12 is disposed in the accommodating space 111, and is assembled with the casing 11 facing the air inlet surface 113. Further, the present invention makes the guide The flow plate 12 is not in contact with the air inlet surface 113, and has a plurality of slits disposed on the air guiding surface 12 facing the air inlet surface 113. The type of air guiding openings 122, the projection of each of the narrow air guiding openings 122 is located between two adjacent narrow air inlets 122. Specifically, the baffle 12 and the casing 11 have an interval A, and the size of the interval A is appropriately adjusted according to the size of the casing 11. The size of the interval A needs to be at least The narrow air inlets 112 and the narrow air guiding openings 122 form a double slit structure.

Referring to FIG. 2 and FIG. 4 , the present invention further illustrates the arrangement relationship between the baffle 12 and the casing 11 . In an embodiment, the casing 11 is a U-shaped structure, and the casing is One side of the 11 is released. Moreover, the deflector 12 has a plate body 121 provided with the narrow air guiding ports 122 and an extending piece 123 extending from the plate body 121. Moreover, the extension piece 123 can be slightly the same size as the release side of the casing 11. The extension piece 123 can be placed on the side of the casing 11 that is released, and is further installed with the casing 11 to shield The accommodation space 111. Furthermore, the baffle 12 has at least one support post 124 disposed on a side facing the air inlet surface 113 and protruding toward the casing 11 to be connected to the casing 11, and a support piece disposed on the extension piece A mounting portion 126 opposite to the support post 124 and overlapping the casing 11. Therefore, the extension piece 123 is stably fixed to the mounting portion 126 through the support post 124, and the resonance piece 123 is prevented from generating resonance noise when the dryer 10 is operated.

Referring to FIG. 5 and FIG. 6 , in an embodiment, the narrow air inlets 112 of the present invention are arranged in the first matrix array on the casing 11 , and the narrow air guiding openings 122 are The two matrix arrays are disposed on the deflector 12. Furthermore, the first matrix can be the same or different from the second matrix.

Moreover, each of the narrow air inlets 112 has an elongated shape and a first extending direction 114 along an extending direction of the long sides thereof. Moreover, each of the narrow air guiding openings 122 is also elongated and has a second extending direction 125 along a direction in which the long sides thereof extend. Furthermore, the present invention further causes the projection positions of the narrow air inlets 112 not to overlap the narrow air guiding openings 122, that is, the projection positions of the narrow air inlets 112 are interlaced with the narrow air guiding openings 122. arrangement. In view of this, the present invention uses these narrow types to enter The tuyere 112 and the narrow air guiding openings 122 form a double slit structure, so that part of the sound waves generated by the gas 20 through the narrow air inlet 112 are taken from the adjacent one of the narrow air inlets 112. The generated sound waves are offset to form a lower noise sound wave that passes through the narrow air guiding port 122 and is again interfered by the lower noise sound wave adjacent to the other narrow air guiding port 122. Offset, the formation of the lowest noise sound waves, thereby achieving the effect of reducing noise.

Referring to FIG. 2 to FIG. 4 , the gas supply module 13 is disposed in the accommodating space 111 . The gas supply module 13 includes a wind drum 131 for extracting the gas 20 and a wind drum 131 connected thereto. The air guiding member 132 and the air inlet 133 are disposed in the accommodating space 111 and connected to the air drum 131. The end of the air guiding member 132 is exposed outside the casing 11. Further, after the wind drum 131 is activated, the gas 20 located in the accommodating space 111 is extracted, and the air pressure in the accommodating space 111 is changed, and the outside air 20 is drawn through the narrow air inlets 112. In addition, the gas 20 passes through the air inlet 133 to the air drum 131, and is activated to generate a hand airflow 30 and is transmitted to the air guiding member 132. The air guiding member 132 receives the hand airflow 30. And pushed outside the dryer 10.

In addition, referring to FIG. 1 and FIG. 2, the opening and closing sensing element 14 can be an infrared sensor or other sensing element that can determine whether an object is close to the object. The opening and closing sensing element 14 is disposed in the receiving space. 111 is electrically connected to the air drum 131. Further, the opening and closing sensing element 14 is mounted on the air drum 131 adjacent to the air guiding member 132, and once it is determined that the user's hand is close to the air guiding member 132, The opening and closing sensing element 14 will emit an opening and closing signal, and the wind drum 131 is required to be activated, so that the air drum 131 extracts the gas 20 to generate the hand airflow 30, and the hand drying is performed via the air guiding member 132. Air stream 30 is delivered to the user's hand for drying purposes.

With reference to FIG. 4 to FIG. 6 , the hand dryer 10 of the present invention has an air inlet path which is generated when the gas supply module 13 is activated. Specifically, the air drum 131 accepts the When the signal is turned on and off, the air drum 131 starts to operate and generates an inward suction force, so that the gas 20 located outside the casing 11 continues through the narrow air inlet 112, the narrow air guiding port 122, and finally to the wind drum. 131 flows, and the specific path of the air inlet path is as described for the path of the gas 20. Accordingly, the present invention has a double slit structure formed by the narrow air inlets 112 and the narrow air guiding ports 122, so that a part of the sound waves generated by the gas 20 through the narrow air inlets 112 are The acoustic wave generated by the adjacent one of the narrow air inlets 112 is offset to form a lower noise sound wave, and the lower noise sound wave passes through the narrow air guiding port 122 and is passed through another adjacent narrow hole. The lower noise sound waves of the type air guiding port 122 are again interfered with and canceled, forming the lowest noise sound wave, thereby achieving the effect of reducing noise.

Claims (5)

  1. A hand dryer capable of reducing air intake noise, comprising: a casing having an accommodating space and a plurality of narrow air inlets connecting the accommodating space and the outer portion of the casing, the casing defining a side to the volume a space is provided and the air inlet surface of the narrow air inlet is provided; a deflector is disposed in the accommodating space and is assembled with the casing corresponding to the air inlet surface, and the air deflector is not connected to the air inlet surface Contacting, the deflector has a plurality of narrow air guiding openings facing the air inlet surface, and each of the narrow air guiding openings is located between two adjacent narrow air inlets; a gas supply module is disposed on The accommodating space includes a wind drum that starts to extract a gas in the accommodating space to generate a hand airflow, and a wind guiding member that connects the wind drum to receive the hand airflow and the end is exposed outside the casing; And wherein the hand dryer has an air inlet path for the gas outside the casing to sequentially enter the wind drum through the narrow air inlet and the narrow air guiding port after the wind drum is started.
  2. The hand dryer according to claim 1, wherein the deflector has a plate body having the narrow air guiding ports and a body extending from the plate body and mounted on the casing. Extension piece.
  3. The hand dryer according to claim 2, wherein the baffle has at least one side disposed on a side facing the air inlet surface and protruding toward the casing to be connected to the casing. Support column.
  4. The hand dryer according to claim 1, wherein the narrow air inlets are arranged in the first matrix in the casing, and the narrow air guiding ports are arranged in the second matrix. Deflector.
  5. The hand dryer according to claim 4, wherein the narrow air inlets are disposed in the casing in a first extending direction, and the narrow air guiding openings are disposed in a second extending direction. The guide plate is disposed such that the projection positions of the narrow air inlets do not overlap the narrow air guiding port.
TW106129689A 2017-08-31 2017-08-31 A lower air intake noise dryers TWI645820B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
TW106129689A TWI645820B (en) 2017-08-31 2017-08-31 A lower air intake noise dryers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW106129689A TWI645820B (en) 2017-08-31 2017-08-31 A lower air intake noise dryers

Publications (2)

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TWI645820B true TWI645820B (en) 2019-01-01
TW201912087A TW201912087A (en) 2019-04-01

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TW106129689A TWI645820B (en) 2017-08-31 2017-08-31 A lower air intake noise dryers

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007054670A (en) * 2006-12-06 2007-03-08 Mitsubishi Electric Corp Hand dryer
CN202277293U (en) * 2011-11-05 2012-06-20 浙江艾克电器有限公司 Air inlet and outlet device of hand dryer
CN103829869A (en) * 2012-11-21 2014-06-04 戴森技术有限公司 Hand dryer

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007054670A (en) * 2006-12-06 2007-03-08 Mitsubishi Electric Corp Hand dryer
CN202277293U (en) * 2011-11-05 2012-06-20 浙江艾克电器有限公司 Air inlet and outlet device of hand dryer
CN103829869A (en) * 2012-11-21 2014-06-04 戴森技术有限公司 Hand dryer

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