Hand dryer

Abstract

The utility model discloses a hand dryer which comprises a shell and an air outlet assembly, the shell is provided with an air inlet and an air outlet, the air outlet assembly comprises an air outlet pipe and a fan, the air inlet of the fan and one end of the air outlet pipe penetrate through the air outlet, all parts of the air outlet assembly are connected in a sealed mode, a partition plate is arranged in the shell, and a first sealing ring is arranged between the periphery of the partition plate and the shell. The partition plate divides the shell into an air inlet chamber and an air outlet chamber, the air outlet assembly is located in the air outlet chamber, a second sealing ring is arranged between the periphery of the air outlet assembly and the shell and divides the air outlet chamber into a first chamber and a second chamber, an air inlet of the fan is located in the first chamber, and the fan is located in the second chamber. The partition plate is provided with a partition plate opening used for communicating the first chamber with the air inlet chamber, and a third sealing structure is arranged at the joint of the air outlet pipe and the air outlet. According to the hand dryer, the second chamber and the outside are kept sealed through the arranged sealing ring structure, that is, the second chamber forms a sealed cavity, noise transmission of a fan is hindered through the sealed cavity, and noise generated when the hand dryer works is effectively reduced.

Description

Technical Field

[0001] The utility model relates to a hand dryer. Background Art

[0002] A hand dryer, also called a hand dryer, is an electrical device installed in the bathroom that uses airflow to dry the moisture on your hands. When the hand dryer is working, the fan rotates at high speed, which will produce a lot of noise and affect the user experience. Utility Model Content

[0003] In view of the deficiencies in the existing technology, the utility model provides a hand dryer.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a hand dryer, comprising a shell, an air outlet assembly, the shell is provided with an air inlet and an air outlet, the air outlet assembly comprises an air outlet pipe, a fan, and an air inlet of the fan, one end of the air outlet pipe passes through the air outlet, the various components of the air outlet assembly are sealed and connected, a partition is provided in the shell, a first sealing ring is provided between the periphery of the partition and the shell, the partition divides the shell into an air inlet chamber and an air outlet chamber, the air inlet and the air inlet chamber are connected, the air outlet assembly is located in the air outlet chamber, a second sealing ring is provided between the periphery of the air outlet assembly and the shell, the second sealing ring divides the air outlet chamber into a first chamber and a second chamber, the fan inlet is located in the first chamber, the fan is located in the second chamber, a partition opening for connecting the first chamber and the air inlet chamber is provided on the partition, a third sealing structure is provided at the connection between the air outlet pipe and the air outlet, and the first sealing ring, the second sealing ring and the third sealing structure keep the second chamber sealed from the outside.

[0005] The third sealing structure includes a step arranged on the outer wall of the air outlet pipe, and a third sealing ring arranged between the step and the air outlet.

[0006] It also includes a control component. The shell is provided with a sensing opening next to the air outlet. A sensing switch is provided in the sensing opening. A fourth sealing ring is provided between the sensing switch and the sensing opening. The fan and the sensing switch are electrically connected to the control component respectively.

[0007] The shell is provided with an indication opening, an indicator light is provided in the indication opening, a fifth sealing ring is provided between the indicator light and the indication opening, and the indicator light is electrically connected to the control component.

[0008] The partition is provided with a guide plate at intervals at the rear end of the air inlet, and the guide plate forms an L-shaped air duct between the partition and the shell.

[0009] The second chamber is provided with sound-absorbing cotton.

[0010] The housing comprises a front panel and a rear cover plate which are detachably connected.

[0011] The beneficial effects of the utility model are as follows: the utility model maintains a seal between the second chamber and the outside by providing a first sealing ring, a second sealing ring, and a third sealing structure, that is, the second chamber forms a sealed cavity, and the sealed cavity hinders the propagation of noise from the fan, thereby effectively reducing the noise during operation of the hand dryer and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 It is a cross-sectional schematic diagram of the utility model;

[0014] Figure 3 It is an exploded schematic diagram of the utility model. DETAILED DESCRIPTION

[0015] like Figure 1-Figure 3 As shown, a hand dryer comprises a shell 1 and an air outlet assembly 2. The shell 1 is provided with an air inlet 101 and an air outlet 102. The air outlet assembly 2 comprises an air outlet pipe 201, a fan 202, and a fan air inlet 203. One end of the air outlet pipe 201 passes through the air outlet 102. The components of the air outlet assembly 2 are sealed and connected. A partition plate 3 is provided in the shell 1. A first sealing ring 401 is provided between the periphery of the partition plate 3 and the shell 1. The partition plate 3 divides the shell 1 into an air inlet chamber 103 and an air outlet chamber. The air inlet 101 is connected to the air inlet chamber 103. The air outlet assembly 2 is located in the air outlet chamber. A second sealing ring 402 is provided between the periphery of the air outlet component 2 and the shell 1, and the second sealing ring 402 divides the air outlet chamber into a first chamber 105 and a second chamber 106. The fan air inlet 203 is located in the first chamber 105, and the fan 202 is located in the second chamber 106. The partition 3 is provided with a partition opening 301 for connecting the first chamber 105 and the air inlet chamber 103, and a third sealing structure is provided at the connection between the air outlet pipe 201 and the air outlet 102. The first sealing ring 401, the second sealing ring 402 and the third sealing structure keep the second chamber 106 sealed from the outside.

[0016] The third sealing structure includes a step 204 disposed on the outer wall of the air outlet pipe 201 , and a third sealing ring 403 disposed between the step 204 and the air outlet 102 .

[0017] The control assembly 5 is also included. The housing 1 is provided with a sensing opening 107 beside the air outlet 102. A sensing switch 6 is provided in the sensing opening 107. A fourth sealing ring 404 is provided between the sensing switch 6 and the sensing opening 107. The fan 202 and the sensing switch 6 are electrically connected to the control assembly 5, respectively. The sensing switch 6 is used to automatically turn on the fan when a human hand is sensed, and turn off the fan when no human hand is sensed, thereby realizing a contactless switch.

[0018] The housing 1 is provided with an indication opening 108, an indicator light 7 is provided in the indication opening 108, a fifth sealing ring 405 is provided between the indicator light 7 and the indication opening 108, and the indicator light 7 is electrically connected to the control assembly 5. The indicator light 7 can indicate the position of the hand to the user and the working state of the hand dryer. When the product is not working (standby state), the indicator light 7 is one color (such as white light), and in the working state it is another color (such as blue light).

[0019] The partition 3 is provided with a guide plate 302 at a distance at the rear end of the air inlet 101, and the guide plate 302 forms an L-shaped air duct between the partition 3 and the housing 1. Due to the existence of the L-shaped air duct, when the noise emitted by the fan 202 propagates outward along the air inlet channel, it will be blocked by the inner wall of the housing 1 and the guide plate 302, and part of the noise will be reflected back, thereby reducing the noise transmitted from the air inlet 101.

[0020] The second chamber 106 is provided with sound-absorbing cotton (not shown in the figure). The sound-absorbing cotton can play a sound insulation role on the noise of the fan 202, further reducing the noise of the whole machine.

[0021] The housing 1 includes a detachably connected front panel 109 and a rear cover 110. A screw column 104 is provided in the housing 1, and the air outlet assembly 2, the sensor switch 6, the indicator light 7 and other components are connected by screws and the screw column 104. This is an existing conventional technology and will not be described or limited here.

[0022] The above shows and describes the basic principle, main features and advantages of the utility model. The technicians in this industry should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, simple changes and substitutions by ordinary technicians in this field are within the protection scope of the utility model.

Claims

1. A hand dryer, comprising a housing, an air outlet assembly, wherein the housing is provided with an air inlet and an air outlet, the air outlet assembly comprises an air outlet pipe, a fan, and an air inlet of the fan, one end of the air outlet pipe passes through the air outlet, and is characterized in that: The various components of the air outlet assembly are sealed and connected, a partition is provided in the shell, a first sealing ring is provided between the periphery of the partition and the shell, the partition divides the shell into an air inlet chamber and an air outlet chamber, the air inlet and the air inlet chamber are connected, the air outlet assembly is located in the air outlet chamber, a second sealing ring is provided between the periphery of the air outlet assembly and the shell, the second sealing ring divides the air outlet chamber into a first chamber and a second chamber, the fan air inlet is located in the first chamber, the fan is located in the second chamber, a partition opening for connecting the first chamber and the air inlet chamber is provided on the partition, a third sealing structure is provided at the connection between the air outlet pipe and the air outlet, and the first sealing ring, the second sealing ring and the third sealing structure keep the second chamber sealed from the outside.

2. A hand dryer according to claim 1, characterized in that: The third sealing structure includes a step arranged on the outer wall of the air outlet pipe, and a third sealing ring arranged between the step and the air outlet.

3. A hand dryer according to claim 1, characterized in that: It also includes a control component. The shell is provided with a sensing opening next to the air outlet. A sensing switch is provided in the sensing opening. A fourth sealing ring is provided between the sensing switch and the sensing opening. The fan and the sensing switch are electrically connected to the control component respectively.

4. A hand dryer according to claim 3, characterized in that: The shell is provided with an indication opening, an indicator light is provided in the indication opening, a fifth sealing ring is provided between the indicator light and the indication opening, and the indicator light is electrically connected to the control component.

5. A hand dryer according to claim 1, characterized in that: The partition is provided with a guide plate at intervals at the rear end of the air inlet, and the guide plate forms an L-shaped air duct between the partition and the shell.

6. A hand dryer according to claim 1, characterized in that: The second chamber is provided with sound-absorbing cotton.

7. A hand dryer according to claim 1, characterized in that: The housing comprises a front panel and a rear cover plate which are detachably connected.

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