WO2022199391A1

WO2022199391A1 - Hand dryer, heating device, air adjusting device for hand dryer, and air blowing equipment

Info

Publication number: WO2022199391A1
Application number: PCT/CN2022/080111
Authority: WO
Inventors: 姜楠; 姜裕罕; 栾宁
Original assignee: 追觅科技(上海)有限公司
Priority date: 2021-03-24
Filing date: 2022-03-10
Publication date: 2022-09-29

Abstract

Embodiments of the present description provide a hand dryer, a heating device, an air adjusting device for the hand dryer, and air blowing equipment. The hand dryer comprises a housing; air outlet duct assemblies, each comprising a first air outlet duct and a second air outlet duct, both ends of the first air outlet duct being respectively connected to the housing and the second air outlet duct, an air outlet being provided on the second air outlet duct, and the second air outlet duct being rotatable relative to the first air outlet duct; and a heating device, the heating device being spaced apart from the second air outlet duct along the air outlet direction, or the heating device being located in the second air outlet duct and a gap being formed between the heating device and the inner wall of the second air outlet duct. The heating device may be spaced apart from the rotating second air outlet duct, or may be located in the second air outlet duct with a gap formed between the heating device and the inner wall of the second rotating air outlet duct, that is, the heating device is located in the second air outlet duct in a noncontact manner, so that the heating device is not affected by the movement of the rotating second air outlet duct, and thus a heating function can be implemented more reliably and a good heating effect is achieved.

Description

A hand dryer, heating device, air conditioning device for hand dryer, and blowing equipment

technical field

The embodiments of this specification relate to the technical field of electrical appliances, and in particular to a hand dryer, a heating device, a hand dryer air conditioning device, and a blowing device.

Background technique

There are generally two types of hand dryers: heating type and high-speed air drying type. The heating-based hand dryer usually has a relatively large heating power, above 1000W, while the motor power is very small, only less than 200W. , Take away the water on your hands, this method is slower to dry your hands, generally more than 30 seconds. The characteristics of high-speed air hand dryers are that the wind speed is very high, which can reach more than 130 m/s, the speed of drying hands is about 10 seconds, and the heating power is relatively low, only a few hundred watts, and its heating function is only to maintain comfort. , basically does not affect the speed of drying hands. However, the noise generated by the high wind speed is relatively large.

Among them, in the prior art, the use of the hand dryer is relatively simple, and the user experience is poor.

SUMMARY OF THE INVENTION

The purpose of the embodiments of this specification is to provide a hand dryer, a heating device, an air conditioner for the hand dryer, and a blowing device.

The purpose of the embodiment of this specification is to achieve through the following technical solutions:

In a first aspect, the embodiments of this specification provide a hand dryer, which includes: a housing; an air outlet duct assembly, including a first air outlet duct and a second air outlet duct, two ends of the first air outlet duct are respectively communicating with the housing and the second air outlet duct, the second air outlet duct is provided with an air outlet, and the second air outlet duct is rotatable relative to the first air outlet duct; and A heating device; wherein the heating device and the second air outlet duct are arranged at intervals along the air outlet direction; or at least a part of the heating device is located in the second air outlet duct and the heating device and the first air outlet A gap is formed between the inner walls of the two air outlet ducts.

In this solution, the heating device can be spaced apart from the rotating second air outlet duct, that is, the heating device and the second air outlet duct are two independent structures, or it can be arranged with the inner wall of the rotating second air outlet duct to have The gap is located in the second air outlet duct, that is, the heating device and the second air outlet duct are suspended in the air. The above two arrangement manners can realize that the heating device is not affected by the movement of the rotating second air outlet duct, so that the heating function can be realized more reliably, and the heating effect is better.

Preferably, the heating device and the air outlet are at least partially staggered.

In this solution, the above-mentioned structure arrangement can reduce the influence of the air flow flowing out of the heating device from the air outlet, thereby helping to reduce the flow resistance, and can reduce or even avoid the influence of the heating device on the air outlet effect.

Preferably, the casing includes a main casing and a steering casing, the steering casing is connected to the top side wall of the main casing, and an end of the steering casing away from the main casing forms an air outlet opening ; One end of the first air outlet duct is communicated with the air outlet opening, and the heating device and the air outlet opening are arranged at least partially staggered.

In this solution, the above structural arrangement can reduce the influence of the heating device on the airflow from the main casing to the air outlet through the air outlet, thereby helping to reduce the flow resistance and reducing or even avoiding the effect of the heating device on the air outlet. influences.

Preferably, the heating device is connected to the first air outlet duct or the inner wall of the housing.

In this solution, the heating device is fixed by being connected to the non-moving first air outlet duct or the inner wall of the casing, rather than being connected to the moving second air outlet duct, so that the heating device can be prevented from being affected by the second air outlet. The influence of the movement of the air duct is beneficial to ensure the heating effect of the hand dryer. In addition, the heating device is detachably connected to the first air outlet duct, which facilitates the installation and removal of the heating device and also facilitates the installation and removal of other structural components.

Preferably, the heating device includes: a support plate; and a heating assembly connected to the support plate; an air flow passage is formed between the heating assembly and the support plate, and the air flow passage communicates between the casing and the support plate. between the air outlets.

In this solution, the existence of the air flow passage between the heating assembly and the support plate facilitates the realization of gas circulation, thereby helping to reduce the flow resistance and reduce the influence on the air outlet effect of the hand dryer.

Preferably, the heating assembly is wound on the support plate, and a gap is formed between the inner side of the heating assembly and at least one side of the support plate to form the airflow passage.

In this solution, the airflow passage may be formed only between one side of the support plate and the heating assembly, or may be formed between two sides of the support plate and the heating assembly. Among them, compared with the former, the latter is more conducive to realizing the circulation of gas, which in turn is conducive to ensuring the air outlet effect of the hand dryer.

Preferably, the heating device further includes a mounting plate, the support plate is mounted on the mounting plate, and the mounting plate is detachably connected to the inner wall of the first air outlet duct.

In this solution, the mounting plate can support the heating assembly and the support plate, which is beneficial to improve the overall strength of the heating device, thereby improving the reliability of the connection between the heating device and other structures of the hand dryer. The mounting plate can also provide a mounting carrier for other accessories, such as protection elements and temperature sensors as described below. In addition, the mounting plate also facilitates the connection between the heating device and the first air outlet duct.

Preferably, the second air outlet duct extends into the first air outlet duct toward the first end of the first air outlet duct and is rotatable relative to the first air outlet duct, and the heating assembly and The support plate is located at the first end of the second air outlet duct, and a portion of the mounting plate extending beyond the first end of the first air outlet duct is detachably connected to the inner wall of the first air outlet duct.

In this solution, the first end of the second air outlet duct extends into the first air outlet duct to facilitate the connection between the second air outlet duct and the first air outlet duct, and the part of the mounting plate that protrudes from the first end is connected to the first air outlet duct. The inner wall of the air outlet duct can ensure that the heating device is connected to the non-moving first air outlet duct instead of the moving second air outlet duct.

Preferably, the number of the heating device and the air outlet duct assembly is at least two, and the mounting plates of the adjacent heating devices are connected; The spaced regions of the outlet air duct assemblies are at least partially coincident.

In this solution, the air flow from the interior of the casing enters the air outlet duct assembly and the heating assembly through the overlapping or partially overlapping interval areas, and reaches the air outlet under the action of the air flow passage, which can reduce the resistance in the gas flow process. The setting of the heating assembly will basically not block the flow of air, and will not affect the air outlet effect of the hand dryer. In addition, the hand dryer can achieve heating in multiple areas, and the hand dryer can be configured as a hand dryer with a smaller overall volume.

Preferably, the heating components of at least two of the heating devices are connected to a circuit in series.

In this solution, the above structure is adopted, and the heating components in at least two heating devices are connected in series first and then connected to the circuit. Compared with each heating component being connected to the circuit separately, this structure is conducive to simplifying the circuit structure, and the wiring is relatively simple. It is also beneficial to reduce the space occupied by the heating device as a whole.

In a second aspect, the embodiments of this specification provide a hand dryer, which includes: a casing; an air outlet duct assembly, the air outlet duct assembly is in communication with the casing, and the air outlet duct assembly includes a connected a rotating part and a static part, the static part is connected between the rotating part and the casing, the rotating part is provided with an air outlet and is rotatable relative to the static part; and a heating device, the heating The device is located in the air outlet duct assembly, and the heating device is arranged on the inner wall of the static part.

In this solution, the heating device is arranged in the static part, so that the heating device is not affected by the movement of the rotating part, so that the heating function can be realized more reliably, and the heating effect is better.

Preferably, the casing includes a main casing and a steering casing, the steering casing is connected to the top side wall of the main casing, and an end of the steering casing away from the main casing forms an air outlet opening ; The air outlet duct assembly is in communication with the air outlet opening, and the heating device and the air outlet opening are at least partially staggered.

Preferably, the stationary portion includes a first stationary portion and a second stationary portion that are connected to each other, the first stationary portion is connected to the rotating portion, and the second stationary portion is connected to the first stationary portion and the second stationary portion. between the shells; the heating device is detachably connected to the inner wall of the first stationary part.

In this solution, the stationary part is set to include a first stationary part and a second stationary part that are communicated and connected. When the first stationary part or the second stationary part is damaged, only the corresponding first stationary part and the second stationary part can be replaced. part without replacing the entire stationary part. Arranging the heating device in the first stationary part facilitates the staggered arrangement of the heating device and the air outlet of the casing and the air outlet of the rotating part, which is beneficial to ensure the heating effect. In addition, the heating device is detachably connected to the first stationary part, which facilitates the installation and removal of the heating device and also facilitates the installation and removal of other structural components.

Preferably, the heating device further includes a mounting plate, the support plate is mounted on the mounting plate, and the mounting plate is detachably connected to the inner wall of the stationary portion.

In this solution, the mounting plate can support the heating assembly and the support plate, which is beneficial to improve the overall strength of the heating device, thereby improving the reliability of the connection between the heating device and other structures of the hand dryer. The mounting plate can also provide a mounting carrier for other accessories, such as protection elements and temperature sensors as described below. In addition, the mounting plate also facilitates the connection between the heating device and the stationary part.

Preferably, the first stationary portion extends into the second stationary portion, the heating assembly and the support plate are located in the first stationary portion, and the mounting plate extends out of the portion of the first stationary portion Removably attached to the inner wall of the second stationary part.

In this solution, the first stationary portion extends into the second stationary portion to facilitate connection between the first stationary portion and the second stationary portion, and also helps reduce the space occupied by the heating device, thereby reducing the volume of the hand dryer. The part of the mounting plate protruding from the first stationary part is connected to the inner wall of the second stationary part, which can improve the stability of the heating device on the basis of ensuring that the heating device is connected with the first stationary part that does not move, rather than the rotating part that moves sex.

In a third aspect, the embodiments of this specification provide a hand dryer, the hand dryer includes: an air inlet flow channel; a turning flow channel, the turning flow channel includes a main flow channel and a branch flow channel, the main flow channel and the The air inlet flow channel is connected, and the branch flow channel is connected to the air outlet of the hand dryer; a heating device, the heating device is arranged in the turning flow channel, and the heating device is formed with a turning flow channel. The gas passage and the outer casing include a main engine casing and an air outlet casing, the air inlet flow channel is arranged in the main engine casing, the turning flow passage and the heating device are arranged in the air outlet casing, so The air outlet is arranged on the air outlet housing.

In this solution, after the airflow in the air inlet channel enters the main channel of the turning channel, it is discharged from the air outlet through the branch channel, and the heating device is located in the air outlet casing instead of the main body casing, which is conducive to the miniaturization of the hand dryer.

Preferably, the heating device extends from the main flow channel into the branch flow channel; the heating device includes a heating bracket and a heater, the heating bracket includes a main body part and an extension part, and the main body part is located in the In the main flow channel, the extension portion extends from the main body portion into the branch flow channel, and the heater is disposed on the main body portion and the extension portion. Preferably, the extension portion extends into the branch flow channel and does not exceed the air outlet, so as to prevent the heating bracket from affecting the air outlet.

In this solution, after the airflow in the air inlet flow channel enters the main flow channel of the turning flow channel, it is discharged from the air outlet through the branch flow channel. The heating device is located in the turning flow channel, which can fully heat the airflow. The direction of the branch channel extends, the space for the arrangement of the heating device is large, and the design freedom is high. On the basis of meeting the heating requirements, the influence of the heating device on the airflow can be reduced; and the heating device is arranged along the propagation direction of the airflow, so It can fully heat the airflow, and a smaller heating device can be used to meet the heating demand, which is conducive to the miniaturization of the hand dryer; in addition, the heating device can be centrally arranged in one area, rather than scattered in multiple positions of the hand dryer ( For example, they are dispersed in each branch flow channel), which reduces the complexity of the structure, facilitates the simplification of the temperature control design, and facilitates the assembly and maintenance of the hand dryer.

The heating bracket provides a mounting carrier for the heater, so that the heating device can be integrated into a module, which is convenient for the assembly of the hand dryer; each part of the heating bracket is adapted to the turning flow channel, and the heater can be fully arranged in the turning flow channel , so as to ensure the heating effect of the heater on the airflow.

Preferably, the heater is arranged around the heating bracket.

In this solution, the heating bracket extends in the turning flow channel, and the heater surrounds the heating bracket and is subsequently arranged in the turning flow channel, so as to meet the arrangement requirements with a relatively simple structure.

Preferably, the heater includes a heating wire wound on the outside of the heating bracket.

In this solution, the heating wire has a flexible structure and can be easily wound on the heating support, and the heating wire can have a larger contact area with the air, and can achieve a better heating effect with a smaller volume.

Preferably, the heating bracket includes a body plate and a support plate, the body plate extends along the extension direction of the branch flow channel, and at least a part of the support plate extends from the body plate toward the inner wall of the turning flow channel .

In this solution, the extension direction of the body plate is consistent with the flow direction of the air flow in the branch flow channel, so the resistance of the body plate to the air flow is small, and the support plate at least partially extends toward the inner wall of the turning flow channel, so the cross section of the heating bracket is X-type, the heater is wound on the heating bracket and can be arranged on the entire circumference of the flow channel to achieve sufficient heating of the airflow.

Preferably, the heating bracket includes a support ring surrounding the body plate and the support plate, and the outer side of the support ring is supported on the inner wall of the turning flow channel.

In this solution, the body plate and the support plate are supported on the turning flow channel by the support ring, and there is a gap between the remaining part of the heating bracket without the support ring and the inner wall of the turning flow channel, and the gap can provide arrangement space for the heater. Since the support ring is annular, it occupies a smaller cross section of the flow channel, so the resistance to the airflow is also smaller.

Preferably, the support ring is located at the end of the extension portion remote from the main body portion.

In this solution, the support ring is located at the end of the heating bracket, so the heater can be centrally arranged in the middle of the heating bracket. The heating of the airflow is achieved with a small number of components, and the internal structure of the hand dryer is compact and simple.

Preferably, the body plate has a first groove extending along its length direction, the support plate has a second groove extending along its length direction, and the first groove and the second groove are inserted into each other so that all the The body plate is connected with the support plate.

In this solution, the main body plate and the support plate are inserted through the first slot and the second slot, and the main structure of the heating bracket is composed of plate-shaped parts, and the structure is relatively simple.

Preferably, a temperature control device, the temperature control device is located in the turning flow channel, the temperature control device is configured to control the heating when the temperature in the turning flow channel exceeds a preset value The unit stops heating.

In this solution, the temperature control device can monitor the temperature in the steering flow channel. If the temperature exceeds the preset value, it means that the steering flow channel is overheated, and the high temperature may easily cause damage to the components in the hand dryer. to protection.

Preferably, at least two branch flow channels respectively extend in a direction away from the main flow channel, and the heating device extends from the main flow channel toward the inside of the two branch flow channels.

In this solution, by setting up multiple branch flow channels, air flow can be drawn in multiple directions to meet different requirements for drying hands. Since each branch flow channel is provided with a heating device, each air flow can be fully heated. The final hand drying effect is guaranteed; in the case where the heater includes a heating wire, since the shape of the heating wire is free, even if there are multiple branch flow channels, only one heating wire can be used to adapt to the internal shape of the hand dryer.

In a fourth aspect, the embodiments of this specification provide a heating device, which includes at least two heating components arranged at intervals, each of the heating components includes a support plate and a heating assembly connected to the support plate; The positions can be formed with air flow passages that communicate with the spaced regions of at least two of the heating elements.

In this solution, the heating device includes at least two heating components arranged at intervals, so that heating of multiple regions can be realized, and it can be applied to a structure (such as a hand dryer) with a small overall volume and requiring multi-region heating. In addition, the existence of the air flow passage facilitates the realization of the circulation of the gas, thereby helping to reduce the flow resistance and reduce the influence on the air outlet effect of the hand dryer. For example, when a heating device is applied to a hand dryer, it is beneficial to achieve heating on the basis of less influence on the airflow.

Preferably, the heating components in at least two of the heating components are connected to a circuit in series.

In this solution, the above structure is adopted, and the heating components in at least two heating components are connected in series first and then connected to the circuit. Compared with each heating component being connected to the circuit separately, this structure is conducive to simplifying the circuit structure, and the wiring is relatively simple. It is also beneficial to reduce the space occupied by the heating device as a whole.

In this solution, the airflow passage may be formed only between one side of the support plate and the heating assembly, or may be formed between two sides of the support plate and the heating assembly. Among them, compared with the former, the latter is more conducive to realizing the circulation of gas, which is further conducive to ensuring the air outlet effect of the hand dryer including the heating device.

Preferably, a gap is formed between the inner side of the heating assembly and both sides of the support plate to form the airflow passage.

Preferably, the heating assembly is wound on the outside of the support plate along the length direction of the support plate, so that the extending direction of the airflow passage is parallel to the length direction of the support plate.

In this solution, the above-mentioned structure arrangement is adopted, the structure of the heating component is relatively simple, and it is also convenient to realize the circulation of gas, which is beneficial to ensure the air outlet effect of the hand dryer including the heating device.

Preferably, the heating component further includes a mounting plate, the first ends of the mounting plates of the adjacent heating components are connected, and the supporting plate is arranged on the mounting plate and is located at the second end of the mounting plate end.

In this solution, on the one hand, the mounting plate can support the heating assembly and the supporting plate, which is beneficial to improve the overall strength of the heating device, and can also provide mounting carriers for other accessories, such as the protection elements and temperature described below. Sensors, etc.; on the other hand, the mounting plates of adjacent heating components are connected, which is beneficial to connect these heating components as a whole, which is convenient for installation.

Preferably, the heating element further comprises a heat insulating element, and the outer cover of each of the heating assemblies is provided with the heat insulating element.

In this solution, the heat insulating element can prevent the heat generated by the heating assembly from diffusing to the outside, which can not only prevent the waste of energy, improve the heating effect, but also reduce or even prevent damage to the external structure.

Preferably, the support plate and the mounting plate are plugged together, so that the support plate extends from one side of the mounting plate to the other side of the mounting plate;

The heat insulating element is a sleeve structure, the heat insulating element is sleeved on the second end of the mounting plate, and the heating assembly and the support plate are located inside the heat insulating element.

In this solution, the support plate and the mounting plate are plugged into each other, and the connection between the two is simple, and after the two are connected, more accommodating space can be provided for setting the connection components. In addition, the heat insulating element is provided as a sleeve structure, which is convenient for connecting with the mounting plate and connecting with the external structure. At the same time, disposing the heat insulating element at the end of the mounting plate with the heating assembly is also beneficial to reduce the weight of the heating device and reduce the consumables.

Preferably, a gap is formed between one end of the heating assembly close to the inner wall of the heat insulating element and the inner wall of the heat insulating element.

In this solution, a gap is formed between the heating assembly and the heat insulating element, which can not only prevent the heating assembly from being damaged due to friction between the heating assembly and the heat insulating element, but also help to increase the airflow path, thereby reducing airflow resistance.

Preferably, the insulating element is made of mica.

In this solution, the thermal insulation performance, insulation performance and chemical stability of mica are all good, which is beneficial to ensure the overall stability and reliability of the heating device.

Preferably, the heating component further includes a protection device provided on the mounting plate, the protection device includes a temperature sensor, a control element and a protection element;

Wherein, the temperature sensor is used to detect the temperature, and when it is detected that the temperature exceeds a threshold, generate a temperature signal and transmit the temperature signal to the control element, and the control element is used to act on the protection element to switch the heating assembly from an activated state to an inactive state.

In this solution, the protection device can switch the heating component to an inactive state when it detects that the temperature is high, so that the temperature can be controlled within a preset range, which is beneficial to ensure the overall safety of the hand dryer including the heating device , but also help to improve the service life of the hand dryer.

Preferably, the protection element is a temperature control switch or a fuse.

In this solution, the size of the fuse wire is small, and the space requirement is small, but the fuse wire needs to be replaced after it is blown. The temperature control switch can be used repeatedly, but compared with the fuse, the size is larger and the space requirement is relatively larger.

Preferably, the protection element is located on the installation plate; or, the installation plate is provided with an accommodating groove, and the bottom of the support plate corresponds to the first accommodating groove. An escape groove is provided at the position, at least a part of the protection element is arranged in the accommodation groove, and the protection element is located in the space enclosed by the accommodation groove and the escape groove.

In this solution, according to the actual setting requirements, the protection element may be directly arranged on the mounting plate, or the protection element may be arranged in the accommodating groove on the mounting plate. Among them, the cooperation of the avoidance groove and the accommodating groove can not only reduce the requirement for the thickness of the mounting plate, but also improve the space utilization rate.

In a fifth aspect, the embodiments of the present specification provide a heating device, which includes: a mounting plate, the mounting plate is provided with a connection structure; at least two supporting plates, at least two supporting plates are arranged on the mounting plate at intervals at least two heating assemblies, and at least two of the heating assemblies are wound on at least two of the supporting plates in a one-to-one correspondence.

In this solution, the connection structure on the mounting plate is convenient to realize the connection between the heating device and the external structure, so as to realize the fixing of the heating device. At least two heating components are arranged on at least two supporting plates arranged at intervals, so that at least two heating components are arranged at intervals, which can realize heating of multiple regions, and can be applied to structures with a small overall volume and requiring multi-region heating ( such as hand dryers).

In a sixth aspect, the embodiments of this specification provide a hand dryer, which includes: a housing; at least two air outlet duct assemblies, the air outlet duct assemblies are in communication with the housing, and the air outlet duct assemblies are on the There is an air outlet, and at least two of the air outlet duct assemblies are arranged at intervals; and the above heating device, the heating component is disposed adjacent to the corresponding air outlet duct assembly, and the heating component and the air outlet are at least partially staggered It is provided that the spaced regions of at least two of the heating components are at least partially overlapped with the spaced regions of at least two of the air outlet duct assemblies; wherein, the air flow passage is communicated between the housing and the air outlet.

In this solution, the air flow from the interior of the casing enters the air outlet duct assembly and the heating assembly through the overlapping or partially overlapping interval areas, and reaches the air outlet under the action of the air flow passage, which can reduce the resistance during the gas flow process. , the setting of the heating assembly will basically not block the flow of the airflow, and will not affect the air outlet effect of the hand dryer. As mentioned above, the heating device can be applied to a hand dryer that has a small overall volume and requires multi-zone heating. Therefore, the hand dryer including the heating device can achieve heating in multiple zones, and the hand dryer can be set to A hand dryer with a smaller overall size.

Preferably, the casing includes a main casing and a steering casing, the steering casing is connected to the top side wall of the main casing, and an end of the steering casing away from the main casing forms an air outlet opening ; At least two of the air outlet duct assemblies are respectively communicated with the air outlet opening, the heating component and the air outlet opening are at least partially staggered, and the air flow passage is communicated between the air outlet and the air outlet between the openings; the heating assembly is located in the air outlet duct assembly.

In this solution, the heating component and the air outlet opening are at least partially staggered, that is to say, the heating component has little blocking effect on the airflow from the main casing, or does not block the airflow from the main casing at all, which is beneficial to On the basis of ensuring the air outlet effect of the hand dryer, the heating function is realized. In addition, disposing the heating assembly in the air outlet duct assembly instead of the main casing of the hand dryer is beneficial to the miniaturized design of the hand dryer.

Preferably, the heating component is completely staggered from the air outlet.

In this solution, the heating component is completely staggered from the air outlet, which means that the heating component will not restrict the air outlet at all, thereby further ensuring the air outlet effect of the hand dryer.

Preferably, the hand dryer further includes a connecting piece, the connecting piece is connected and communicated between the air outlet duct assembly and the air outlet opening, and the heating component is accommodated inside the connecting piece intracavity.

In this solution, the connector carries the heating component, which facilitates the staggered arrangement of the heating component, the air outlet and the air outlet. In addition, the connector can also strengthen the heating component.

Preferably, there is a gap between the top of the heating component and the wall surface of the accommodating cavity.

In this solution, the above-mentioned structure arrangement is adopted. On the one hand, the friction between the heating component and the connecting piece can be reduced or avoided, which is beneficial to protect the heating component; Air outlet effect, easy to control the temperature inside the hand dryer.

In a seventh aspect, the embodiments of this specification provide an air conditioner for a hand dryer, the air conditioner for the hand dryer includes: a fixed casing, the fixed casing has a first inner cavity; a rotating casing, the rotating casing The casing has a second inner cavity, the second inner cavity communicates with the first inner cavity through an air inlet opening, and the side wall of the rotating casing has an air outlet opening communicated with the second inner cavity, The rotating casing is rotatably connected to the fixed casing, so that the direction of the air outlet opening can be adjusted; a limiting mechanism is configured to make the fixed casing and the rotating The housing rotates within a predetermined angle range.

In this solution, by rotating the rotating housing, the direction of the air outlet opening can be changed, so that the air outlet direction of the hand dryer can be adjusted to meet different usage needs. The limit mechanism can limit the rotation range of the rotating housing and prevent the air outlet from turning in an unfavorable direction. For example, if the air outlet faces upwards, water droplets can easily enter the hand dryer through the air outlet, affecting the service life of the hand dryer. Even cause a short circuit, this problem can be avoided by the limit mechanism. The user can hold the entire rotating housing to adjust the air outlet direction, and the air regulating device of the hand dryer of this solution can exert force over a larger area, which makes it easier for the user to exert force and is easy to operate.

Preferably, the limiting mechanism includes a limiting protrusion and a limiting groove, and one of the limiting protrusion and the limiting groove is provided on the fixed housing and the other is provided on the rotating housing , the limiting protrusion is movably disposed in the limiting groove, wherein when the rotating housing rotates to a first angle relative to the fixed housing, the limiting protrusion abuts against the the first inner wall of the limiting slot; when the rotating housing rotates to a second angle relative to the fixed housing, the limiting protrusion abuts against the second inner wall of the limiting slot.

In this solution, the cooperation between the limit protrusion and the limit groove can make the rotating shell rotate between the first angle and the second angle, and at the same time, the limit protrusion and the limit groove can also rotate against the rotation. The shell acts as an axial limiter.

Preferably, the rotating casing has an annular groove, the limiting protrusion is located in the annular groove, the fixed casing has an annular protrusion matching with the annular groove, and the limiting groove is opened in the annular groove. on the annular protrusion.

In this solution, the annular groove of the rotating casing is matched with the annular protrusion of the fixed casing, so as to play a role in the rotation of the rotating casing, and the limiting protrusion protrudes from the bottom of the annular groove toward the mouth of the annular groove and the movement range of the limiting protrusion is limited within the limiting groove.

Preferably, the length of the limiting groove along the arc surface is 10% to 80% of the entire circumference of the annular protrusion.

In this solution, if the length of the limit slot is too small, the movable range of the rotating housing is too small, which cannot meet the requirements of various air outlet directions. If the length of the limit slot is too large, the air outlet opening can almost face In any direction, the meaning of the limit is lost.

Preferably, the fixed housing comprises a first housing part and a second housing part which are fastened to each other, and the annular protrusion comprises a first protruding part located on the first housing part; the second protruding part on the second housing part.

In this solution, the fixed housing is formed by snapping the first housing part and the second housing part, so that the limiting protrusion can be easily installed into the limiting groove (ie, the first protrusion and the second between the raised parts), reducing the difficulty of installation. Moreover, by opening the first housing part and the second housing part, the internal structure of the fixed housing can be exposed to the outside, which is convenient for inspection and maintenance.

Preferably, the rotating casing includes an outer casing of the air duct and an inner casing of the air duct, the inner casing of the air duct is fixedly arranged in the inner casing of the air duct, the air outlet opening is opened in the outer casing of the air duct, and the inner casing of the air duct is arranged in the inner casing of the air duct. The side wall of the air duct is formed with an air outlet slot that communicates with the interior of the inner shell of the air duct, and the air outlet slot is adapted to the air outlet opening.

In this solution, the rotating shell includes inner and outer shells, which improves the thermal insulation performance of the rotating shell, reduces heat loss, improves energy utilization, and can also prevent the surface temperature of the rotating shell from being too high. The user will not be scalded when touching the rotating casing to adjust the wind direction.

Preferably, there is a distance between the outer shell of the air duct and the inner shell of the air duct to form a thermal insulation layer.

In this solution, the space between the outer shell of the air duct and the inner shell of the air duct forms an insulating layer, which prevents or slows down the conduction of heat to the outer shell of the air duct. The thermal insulation layer can be an air layer, that is, no other materials are arranged in the thermal insulation layer, or thermal insulation materials, such as thermal insulation cotton, thermal insulation foam, etc., can be arranged in the thermal insulation layer to further improve the thermal insulation effect.

Preferably, an annular wind baffle is arranged between the outer casing of the air duct and the inner casing of the air duct, the annular baffle surrounds the outer circumference of the air outlet, and the annular baffle is separated from the outer casing of the air duct. extends to the inner casing of the air duct.

In this solution, the annular wind deflector can guide the airflow and prevent the airflow from entering the thermal insulation layer, thereby reducing energy loss. Moreover, the annular wind deflector forms the function of supporting and positioning between the outer casing of the air duct and the inner casing of the air duct.

Preferably, the fixed casing has an air outlet port that communicates with the first inner cavity, and the rotating casing is partially inserted into the fixed casing through the air outlet port.

In this solution, through the air outlet port, the rotating casing can partially extend into the first inner cavity, which reduces the contact between the airflow generated by the hand dryer and the fixed casing, and the airflow directly enters the rotating casing as much as possible. , reducing the risk of air leakage.

Preferably, the fixed casing has an air inlet port, and a side portion of the portion of the rotating casing located in the fixed casing is provided with an air inlet side opening, and the air inlet side opening faces the air inlet port.

In this solution, the air flow generated by the hand dryer enters the fixed casing through the air inlet port. Since the opening on the air inlet side is set towards the air inlet port, the air flow can directly flow into the rotating casing, and try to avoid the airflow flowing to the fixed casing and the rotating casing. between bodies to reduce airflow loss.

Preferably, the fixed casing has a plurality of the air outlet ports, and each of the air outlet ports is provided with the rotating casing correspondingly.

In this solution, multiple rotating shells can lead out multiple airflows, and each rotating shell can independently adjust the wind direction, so as to meet various usage scenarios of drying hands. Preferably, there are two air outlet ports, so that hands can be dried at the same time.

In an eighth aspect, the embodiments of the present specification provide a hand dryer, including the aforementioned air conditioner for the hand dryer.

In this solution, since the hand dryer has the above-mentioned hand dryer air regulating device, the direction of the air outlet opening can be changed by rotating the rotating housing, so that the air outlet direction of the hand dryer can be adjusted, and the user can Holding the entire rotating housing to adjust the air outlet direction, the hand dryer air regulating device of this solution can exert force on a larger area, and it is easier for the user to exert force and easy to operate.

In a ninth aspect, the embodiments of this specification provide a blowing device, comprising: a base, and a blowing main body detachably disposed on the base; the blowing main body includes: a connecting handle, which is rotatably connected to the connecting handle The air outlet is connected with the connecting handle vertically or by bending when the air outlet is rotated to a preset angle; an air outlet is provided on the side wall of the air outlet.

Preferably, the air outlet extends along the axial direction of the air outlet duct.

Preferably, a concave cavity extending along the axial direction of the air outlet duct is opened on the side wall of the air outlet duct, and the air outlet is opened at the bottom of the concave cavity.

Preferably, the side walls of the cavity are inclined surfaces that are inclined and gathered toward the bottom of the cavity.

Preferably, the air outlet tube comprises: an inner tube body, the inner tube body is rotatably connected with the connecting handle, the concave cavity is provided on the side wall of the inner tube body; an outer tube body, the outer tube body The outer cylinder is sleeved on the outside of the inner cylinder, and the outer cylinder is provided with an opening, and the opening is opposite to the cavity and communicates with the cavity; the cavity cover is embedded in the opening and covers side walls of the cavity.

Preferably, the surface where the bottom end of the air outlet pipe and the top end of the connecting handle are located are located on the same chamfered plane, and the air outlet pipe rotates relative to the connecting handle around the normal line of the chamfered plane, and all the The bottom end of the air outlet at least partially overlaps the top end of the connecting handle.

Preferably, the bottom end of the air outlet has a first connecting piece, the top end of the connecting handle has a second connecting piece, and the first connecting piece is rotatably connected with the second connecting piece.

Preferably, the first connecting member is a first supporting plate, and the first supporting plate has a first hollow area that communicates with the inside of the air outlet; the second connecting member is a second supporting plate, And the second support plate has a second hollow area that communicates with the inside of the connecting handle; wherein the first support plate and the second support plate are connected with pins and are parallel to the chamfered surface.

Preferably, a motor, an impeller driven by the motor and a circuit board electrically connected to the motor are accommodated in the connection handle; and a switch assembly electrically connected to the circuit board is provided on the connection handle; wherein the The connecting handle is provided with an air inlet, and the inner cavity of the connecting handle communicates with the inner cavity of the air outlet.

Preferably, a heating element electrically connected to the circuit board is also accommodated in the connection handle or the air outlet.

Preferably, the connecting handle is further provided with a filter element arranged opposite to the air inlet.

Preferably, the blower body has a main control module electrically connected to the circuit board; an induction module electrically connected to the main control module is provided near the air outlet; the main control module is used for the induction After the module is turned on, a trigger signal from the sensing module is received, and the motor is controlled to turn on after receiving the trigger signal.

Preferably, the base has a receiving cylinder into which the connecting handle is inserted, and a supporting portion which expands and extends downward from the bottom end of the receiving cylinder.

Preferably, the base is provided with a suction cup; or the base is a base, and a counterweight is provided on the base.

Compared with the prior art, the embodiments of this specification have the following beneficial effects:

In the hand dryer provided by the first aspect, in the hand dryer, the heating assembly can be spaced apart from the rotating second air outlet duct, that is, the heating assembly and the second air outlet duct are two independent structures, or they can be The inner wall of the rotating second air outlet duct is located in the second air outlet duct with a gap, that is, the heating assembly and the second air outlet duct are suspended in the air. The above two arrangement manners can realize that the heating assembly is not affected by the movement of the rotating second air outlet duct, so that the heating function can be realized more reliably, and the heating effect is better. .

In the hand dryer provided by the second aspect, in the hand dryer, the heating component is arranged in the static part, so that the heating component is not affected by the movement of the rotating part, so that the heating function can be more reliably realized, and the heating effect is better. .

In the hand dryer provided by the third aspect, the heating device is arranged in the air outlet casing instead of the main body casing, which is conducive to the miniaturization of the hand dryer; by arranging the heating device in the turning flow channel, the airflow in the air inlet flow channel enters After turning to the flow channel, the propagation direction of the air flow coincides with the extension direction of the heating device, the air flow can be fully heated, and the space inside the turning flow channel is larger, and the design freedom of the heating device is higher; in addition, the heating device can be concentrated in one area. , instead of being scattered in multiple positions of the hand dryer, which reduces the complexity of the structure, is conducive to simplifying the temperature control design, and facilitates the assembly and maintenance of the hand dryer.

In the heating device provided in the fourth aspect, the heating device provided in the fifth aspect, and the hand dryer provided in the sixth aspect, the heating device includes at least two heating components arranged at intervals, so that heating of multiple regions can be achieved, and can be applied to In structures that have a smaller overall volume and require multi-zone heating (such as hand dryers). In addition, the existence of the air flow passage between the heating assembly and the support plate in the heating part facilitates the realization of gas circulation, which is beneficial to reduce the flow resistance and reduce the influence on the air outlet effect of the hand dryer; the heating assembly is arranged in the air outlet duct In the component instead of the main casing of the hand dryer, it is beneficial to the miniaturized design of the hand dryer.

The air flow from the inside of the casing enters the air outlet duct assembly and the heating assembly through the overlapping or partially overlapping interval areas, and reaches the air outlet under the action of the air flow passage, which can reduce the resistance in the process of gas flow, and the setting of the heating assembly Basically, it will not block the flow of airflow and will not affect the air outlet effect of the hand dryer. In addition, the hand dryer comprising the above-mentioned heating device can achieve heating in multiple areas, and the hand dryer can be configured as a hand dryer with a smaller overall volume.

In the hand dryer air-regulating device provided in the seventh aspect and the hand dryer provided in the eighth aspect, the entire rotating casing can be rotated relative to the fixed casing, so the wind direction can be adjusted by rotating the rotating casing, and the force during adjustment can be adjusted. The object is larger and the operation is more convenient. In addition, the limit mechanism can limit the rotation range of the rotating casing to prevent the air outlet from turning in an unfavorable direction; the hand dryer in the embodiment of this specification uses the above-mentioned hand dryer air regulating device, so It can easily adjust the wind direction to meet different hand drying needs.

In the blowing device provided by the ninth aspect, the base and the blowing main body are detachably connected, and the blowing main body includes a connecting handle and an air outlet. The main body of the wind, the air outlet on the side wall of the air duct discharges the air, so that the hair dryer can be used as a hair dryer. The main body of the blower is set on the base, the base is placed on the bearing surface, and the blower is rotated so that the connecting handle and the blower are bent and connected to change the direction of the blower. The blower does not need to be hand-held, and the blower is used as a hand dryer. The air outlet on the side wall of the air outlet can blow out the air, and the hand can be blown by the airflow over a large area under the air outlet, which makes the user feel better. The hair dryer can be used as a hand dryer and a hair dryer, and also allows users to reduce purchases of small household appliances, reduce consumption costs, and save storage space.

Description of drawings

The accompanying drawings described herein are used to provide further understanding of the embodiments of the present specification, and constitute a part of the embodiments of the present specification. Improper limitation of the embodiment. In the attached image:

1 is a schematic structural diagram of a hand dryer according to a preferred embodiment of the present specification;

Fig. 2 is the enlarged structural representation of part A in Fig. 1;

FIG. 3 is a partial structural schematic diagram of a hand dryer according to a preferred embodiment of the present specification;

4 is a schematic structural diagram of another part of the hand dryer according to the first preferred embodiment of the present specification;

5 is a schematic structural diagram of a second air outlet duct of a hand dryer according to a preferred embodiment;

6 is a schematic structural diagram of a heating device according to a preferred embodiment of the present specification;

FIG. 7 is another schematic structural diagram of the heating device according to the first preferred embodiment of the present specification;

8 is another schematic structural diagram of a heating device according to a preferred embodiment of the present specification;

FIG. 9 is a partial structural schematic diagram of a heating device according to a preferred embodiment of the present specification;

10 is a schematic structural diagram of a hand dryer according to a preferred embodiment of the present specification;

Fig. 11 is the enlarged structural schematic diagram of part A in Fig. 10;

FIG. 12 is a partial structural schematic diagram of the hand dryer according to the first preferred embodiment of the present specification;

13 is a partial structural schematic diagram of an air outlet duct assembly of a hand dryer according to a preferred embodiment of the present specification;

14 is a schematic structural diagram of the hand dryer according to the first embodiment of the present specification;

15 is a schematic diagram of the internal structure of the hand dryer according to the first embodiment of the present specification;

Figure 16 is an enlarged schematic view of Figure 15 at A;

17 is a schematic structural diagram of a heating device of a hand dryer according to an embodiment of the present specification;

18 is a schematic structural diagram of a heating device of a hand dryer according to another embodiment of the embodiment of the present specification;

19 is a schematic structural diagram of the hand dryer according to the embodiment of the present specification;

20 is a schematic structural diagram of a hand dryer according to an embodiment of the present specification;

21 is a schematic structural diagram of the air conditioner for the hand dryer according to the embodiment of the specification;

22 is a schematic structural diagram of the rotating casing of the air conditioner of the hand dryer according to the embodiment of the specification;

23 is a schematic cross-sectional view of the rotating casing of the air conditioner of the hand dryer according to the embodiment of the specification;

24 is a schematic diagram of a partial structure of the inner casing of the air duct of the rotating casing of the air conditioner of the hand dryer according to the embodiment of the present specification;

Fig. 25 is an exploded view of the fixed casing of the air conditioner of the hand dryer according to the embodiment of the specification;

Figure 26 is an enlarged schematic view of Figure 25 at A;

FIG. 27 is a perspective view of the connecting handle of the blowing device and the air outlet duct when they are folded and connected according to the embodiment of the specification.

Figure 28 is a sectional view of A-A in Figure 27;

Fig. 29 is a perspective view when the connecting handle of the blowing device and the air outlet duct are vertically connected in the embodiment of this specification;

Figure 30 is a sectional view of B-B in Figure 27;

31 is a schematic structural diagram of the base in the embodiment of the specification;

FIG. 32 is a schematic structural diagram of the base in the embodiment of the specification;

FIG. 33 is a circuit block diagram of the blowing device in the embodiment of the specification.

Detailed ways

The exemplary embodiments of the embodiments of the present specification will be described in detail below with reference to the accompanying drawings. If several specific embodiments exist, the features of these embodiments may be combined with each other without conflict. When the description refers to the drawings, the same numbers in different drawings refer to the same or similar elements unless otherwise indicated. The contents described in the following exemplary embodiments do not represent all implementations consistent with the embodiments of the present specification; on the contrary, they are only the same as those described in the claims of the embodiments of the present specification and consistent with the embodiments of the present specification. Examples of devices, products, and/or methods consistent with some aspects.

The terms used in the embodiments of the present specification are only for the purpose of describing specific implementations, and are not intended to limit the protection scope of the embodiments of the present specification. As used in the specification and claims of this specification, the singular forms "a," "the," or "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise.

It should be understood that words such as "first", "second" and similar words used in the description and claims of the embodiments of the present specification do not indicate any order, quantity or importance, but are only used to distinguish features name. Likewise, "a" or "an" and the like do not denote a quantitative limitation, but rather denote the presence of at least one. Unless otherwise specified, words like "front", "rear", "upper", "lower" and the like appearing in the embodiments of the present specification are only for convenience of description, and are not limited to a specific position or a spatial orientation. "includes" or "comprising" and the like are open-ended expressions, meaning that elements appearing before "including" or "including" encompass elements appearing after "including" or "including" and their equivalents, This does not exclude that elements appearing before "comprising" or "comprising" can also include other elements. If "several" appears in the embodiments of this specification, its meaning refers to two or more.

Example 1

This embodiment discloses a hand dryer. As shown in FIGS. 1-9 , the hand dryer includes a housing, an air outlet duct assembly 40 and a heating device 10 . The air outlet duct assembly 40 includes a first air outlet duct 401 and a second air outlet duct 402. Both ends of the first air outlet duct 401 are connected to the housing and the second air outlet duct 402 respectively. An air outlet is provided on 402 , and the second air outlet duct 402 is rotatable relative to the first air outlet duct 401 . The heating device 10 and the second air outlet duct 402 are arranged at intervals along the air outlet direction; or at least a part of the heating device 10 is located in the second air outlet duct 402 and a gap is formed between the heating device 10 and the inner wall of the second air outlet duct 402 .

Wherein, the heating device 10 may be spaced apart from the rotating second air outlet duct 402 , that is, the heating device 10 and the second air outlet duct 402 are two independent structures, or may be connected to the inner wall of the rotating second air outlet duct 402 . The heating device 10 and the second air outlet duct 402 are located in the second air outlet duct 402 in a manner of having a gap, that is, the heating device 10 is suspended in the air. The above two arrangement manners can realize that the heating device 10 is not affected by the movement of the rotating second air outlet duct 402 , so that the heating function can be realized more reliably, and the heating effect is better. Placing the heating device 10 in the air outlet duct assembly instead of the housing facilitates miniaturization of the hand dryer.

It should be noted that, as shown in FIGS. 1-3 , in this embodiment, the heating device 10 adopts the above-mentioned second setting method, that is, at least a part of the heating device 10 is located in the second air outlet duct 402 , and the heating device 10 It is suspended from the second air outlet duct 402 . The air outlet duct of the hand dryer can be designed to be more compact.

In addition, it should be noted that the number of air outlet duct assemblies 40 and the number of heating devices 10 may be set to at least one.

In a preferred embodiment, the heating device 10 is at least partially staggered from the air outlet.

Wherein, this arrangement can reduce the influence of the airflow flowing out of the heating device 10 from the air outlet, thereby helping to reduce the flow resistance, and can reduce or even avoid the influence of the heating device 10 on the air outlet effect.

As shown in Figures 1-3, in another preferred embodiment, the housing includes a main housing 20 and a steering housing 30, the steering housing 30 is connected to the top sidewall of the main housing 20, and the steering housing 30 is far away from An air outlet opening is formed at one end of the main casing 20 . One end of the first air outlet duct 401 is connected to the air outlet opening, and the heating device 10 and the air outlet opening are arranged at least partially staggered.

The arrangement in this way can reduce the influence of the heating device 10 on the airflow from the main casing 20 to the air outlet through the air outlet, thereby helping to reduce flow resistance and reducing or even avoiding the influence of the heating device 10 on the air outlet effect.

Of course, it is preferable to set the heating device 10 to be completely staggered from the air outlet and the air outlet opening.

It should be noted that the staggered arrangement of the two structural members means that the two structural members are not shielded from each other in the direction of the air outlet.

It will be understood with reference to FIGS. 1 and 2 , the heating device 10 is connected to the inner wall of the first air outlet duct 401 . The heating device 10 is fixed by being connected to the inner wall of the first air outlet duct 401 that does not move, instead of being connected to the second air outlet duct 402 that moves, so the heating device 10 can be prevented from being affected by the second air outlet duct 402 . The influence of the movement of 402 is beneficial to ensure the heating effect of the hand dryer. In addition, the heating device 10 and the first air outlet duct 401 may be detachably connected in an optional embodiment, which facilitates the installation and removal of the heating device 10 and the installation and removal of other structural components.

In an alternative embodiment, the heating device 10 may also be attached to the inner wall of the housing. This arrangement can also prevent the heating device 10 from being affected by the movement of the second air outlet duct 402 , thereby helping to ensure the heating effect of the hand dryer.

As shown in FIGS. 2-3 and 6-9 , in another preferred embodiment, the heating device 10 includes a support plate 102 and a heating assembly 101 , and the heating assembly 101 is connected to the support plate 102 . An air passage is formed between the heating assembly 101 and the support plate 102, and the air passage communicates between the casing and the air outlet.

The airflow path means that the airflow can flow from one side of the heating assembly to the other side, which can be formed by the gap between the heating assembly 101 and other components, such as the above-mentioned support plate 102 , or formed by the gap in the structure of the heating assembly itself. .

The existence of the air flow passage between the heating assembly 101 and the support plate 102 facilitates the realization of gas circulation, thereby helping to reduce the flow resistance and reduce the influence on the air outlet effect of the hand dryer.

In another preferred embodiment, the heating assembly 101 (the heating assembly 101 includes but is not limited to heating wires) is arranged to be wound on the support plate 102, and a gap is formed between the inner side of the heating assembly 101 and at least one side of the support plate 102, to form an air flow path.

The airflow passage may be formed only between one side of the support plate 102 and the heating assembly 101 , or may be formed between two sides of the support plate 102 and the heating assembly 101 . Among them, compared with the former, the latter is more conducive to realizing the circulation of gas, which in turn is conducive to ensuring the air outlet effect of the hand dryer.

Figure 4 schematically shows the air flow path within the hand dryer. Specifically, in this embodiment, the bottom of the main casing is provided with an air inlet, the internal air source 70 in the main casing 20 generates a flowing air flow, and the air enters the flow channel in the main casing 20 through the air inlet and enters the steering The flow channel of the casing 30 reaches the air outlet through the air flow passage for discharge. Wherein, the internal air source 70 is mainly used to provide airflow, and may be an existing device for generating airflow, such as a fan and an air pump. The internal air source 70 is fixed inside the main casing 20 and can be driven by an external power source or a built-in power source. Among them, the dashed line with arrows schematically shows the ejection direction of the airflow.

In another preferred embodiment, the heating device 10 further includes an installation plate 103 , the support plate 102 is installed on the installation plate 103 , and the installation plate 103 is detachably connected to the inner wall of the first air outlet duct 401 .

The mounting plate 103 can support the heating assembly 101 and the support plate 102 , which is beneficial to improve the overall strength of the heating device 10 , thereby improving the reliability of the connection between the heating device 10 and other structures of the hand dryer. Mounting plate 103 may also provide a mounting carrier for other accessories, such as protection element 106 and temperature sensor 105 described below, among others. In addition, the mounting plate 103 also facilitates the connection between the heating device 10 and the first air outlet duct 401 .

In another preferred embodiment, the number of the heating device 10 and the air outlet duct assembly 40 is at least two, and the mounting plates 103 of adjacent heating devices 10 are connected. The spaced areas of the at least two heating assemblies 101 are at least partially coincident with the spaced areas of the at least two air outlet duct assemblies 40 . It should be noted that two connected heating devices 10 are schematically shown in FIGS. 6-9 . Specifically, as shown in FIGS. 6-9 , the mounting plate 103 of each heating component can be assembled into an integral plate-like structure.

The air flow from the inside of the casing enters the air outlet duct assembly 40 and the heating assembly 101 through the overlapping or partially overlapping interval areas, and reaches the air outlet under the action of the air flow passage, which can reduce the resistance in the process of gas flow and heat the air. The arrangement of the assembly 101 will basically not block the flow of the airflow, and will not affect the air outlet effect of the hand dryer. In addition, the hand dryer can achieve heating in multiple areas, and the hand dryer can be configured as a hand dryer with a smaller overall volume.

In another preferred embodiment, the heating components 101 of at least two heating devices 10 are connected to the circuit in series.

Wherein, the heating elements 101 in these heating devices 10 are connected in series first and then connected to the circuit. Compared with each heating element 101 being connected to the circuit individually, this structure is conducive to simplifying the circuit structure, the wiring is simpler, and is also conducive to reducing the number of heating devices 10 . overall space occupied.

As shown in FIG. 1-2, the second air outlet duct 402 extends into the first air outlet duct 401 toward the first end of the first air outlet duct 401 and is rotatable relative to the first air outlet duct 401. The heating assembly 101 and The support plate 102 is located at the first end of the second air outlet duct 402 , and the portion of the mounting plate 103 extending beyond the first end of the first air outlet duct 401 is detachably connected to the inner wall of the first air outlet duct 401 .

Wherein, as shown in FIGS. 2-3 and 5 , the first end of the second air outlet duct 402 (illustrated as the extending end 4021 ) extends into the first air outlet duct 401 to facilitate the realization of the second air outlet duct 402 and the first air outlet duct 402 . For the connection of the air outlet duct 401, the part of the mounting plate 103 protruding from the first end (that is, the protruding end 4021) is connected to the inner wall of the first air outlet duct 401, which can ensure that the heating device 10 is connected to the first air outlet that does not move. The duct 401 is connected to the second air outlet duct 402 instead of moving.

It should be noted that, in another preferred embodiment, both the first air outlet duct 401 and the second air outlet duct 402 may be configured as a double-layer structure including an inner duct and an outer duct. Specifically, for the first air outlet duct 401 , the mounting plate 103 of the heating device 10 is detachably connected to the inner duct of the first air outlet duct 401 , and the outer duct of the first air outlet duct 401 covers the outside of the inner duct. For the second air outlet duct 402 , the inner and outer pipes of the second air outlet duct 402 are integrally rotated relative to the first air outlet duct 401 , and the inner duct of the second air outlet duct 402 extends into the first air outlet duct 401 Pipe, the outer pipe of the second air outlet pipe 402 is sleeved on the outside of the inner pipe of the second air outlet pipe 402 and is adjacent to the outer pipe of the first air outlet pipe 401 .

It should be noted that, in fact, the heating device 10 can be fastened to the first air outlet duct 401 by any suitable connection method (preferably by a detachable connection method). 2-3 schematically illustrate one way of connecting by means of the fastening plate 80 . The mounting plate 103 is provided with a fastening plate 80, the fastening plate 80 is provided with a fastening hole 801, and the fastener 90 can pass through the fastening hole 801 and the connection hole on the connecting piece 50 to connect the heating device 10 to the connection Piece 50. In addition, the hand dryer also includes a fixing plate 60. The fixing plate 60 is mainly used to realize the structural splicing of the connector 50 itself. As shown in FIG. Between the inner walls on both sides, the fixing plate 60 is provided with a clamping slot 601, and the installation plate 103 of the heating device 10 is clamped in the clamping slot 601, so the fixing plate 60 can also improve the reliability of the connection between the heating device 10 and the first air outlet duct 401. sex.

In another preferred embodiment, as shown in FIGS. 6-9 , the heating device 10 further includes a first heat insulating element 104 , the first heat insulating element 104 is sheathed on the outside of the heating assembly 101 , and the top of the heating assembly 101 is connected with the first heat insulating element 104 . A gap is formed on the inner wall of the first heat insulating element 104 , and a gap is formed between the outer wall of the first heat insulating element 104 and the inner wall of the second air outlet duct 402 .

The first heat insulating element 104 can prevent the heat generated by the heating assembly 101 from diffusing to the outside, which can not only prevent the waste of energy, improve the heating effect, but also reduce or even prevent damage to the external structure and prevent hot hands.

As shown in FIG. 3 , the heating device 10 further includes a second thermal insulation element 109 , the second thermal insulation element 109 is sleeved on the outside of the first thermal insulation element 104 , and the end of the second thermal insulation element 109 is provided for limiting The limiting portion 110 for the movement of the first heat insulating element 104 . Wherein, a gap is formed between the outer wall of the second heat insulating element 109 and the inner wall of the second air outlet duct 402 . The limiting portion 110 is schematically shown as a raised portion.

Among them, on the one hand, the limiting part in the second heat insulating element 109 can limit the movement of the first heat insulating element 104, thereby improving the reliability of the fixing of the heating device 10, which is beneficial to ensure the heating effect, and can also reduce the normal impact on other structures. The influence of the work is conducive to ensuring the normal operation of the hand dryer; on the other hand, the second heat insulation element 109 can also further play a role in heat insulation, which is conducive to further improving the heating effect and further reducing or preventing damage to the external structure. .

The first heat insulating element 104 and the second heat insulating element 109 are all made of heat insulating material. In fact, the first heat insulating element 104 and the second heat insulating element 109 can be made of any suitable heat insulating material. Here, the first thermal insulation element 104 and the second thermal insulation element 109 are both made of mica.

In another preferred embodiment, as shown in FIGS. 2-3 and 6-9 , the support plate 102 and the mounting plate 103 are plugged together, so that the support plate 102 extends from one side of the mounting plate 103 to the mounting plate 103 on the other side. The support plate 102 and the mounting plate 103 form an X-shaped mounting frame, and the X-shaped mounting frame forms an airflow path composed of four substantially spaced spaces. The plates 103 can be provided with installation grooves (as shown in FIG. 9 , the installation grooves of the support plate 102 are shown as the first installation grooves 1021, and the installation grooves on the installation plate 103 are shown as the second installation grooves 1033) to bypass the electric heating The half of the coiled structure of the electric heating wire also has a gap, which can form a part of the fluid passage; the heating device 101 can also use a structure such as a PTC heating element, an electric heating tube, and the like. The heating device may also include a plurality of support plates 102, and at this time, the cross-sectional shape of the mounting frame formed by the support plates 102 and the mounting plate 103 will also change correspondingly. The first thermal insulation element 104 and the second thermal insulation element 109 are both sleeve structures, the first thermal insulation element 104 is sleeved on the second end of the mounting plate 103 , and the heating assembly 101 and the support plate 102 are located on the first thermal insulation element 104 internal.

Wherein, the support plate 102 and the installation plate 103 are plugged into each other, the connection between the two is simple, and after the two are connected, more accommodating space can be provided to set the heating assembly 101 . In addition, the first heat insulating element 104 and the second heat insulating element 109 are configured as sleeve structures, which facilitates connection with the mounting plate 103 and connection with the external structure. Meanwhile, arranging the first heat insulating element 104 at the end of the mounting plate 103 with the heating assembly 101 is also beneficial to reduce the weight of the heating device 10 and reduce consumables.

It should be noted that, in other alternative embodiments, the first thermal insulation element 104 and the second thermal insulation element 109 can also be set to other structures. In addition, the first thermal insulation element 104 and the second thermal insulation element 109 are also It can be provided over the entire extension of the mounting plate 103 .

As shown in FIGS. 7-8 , in another preferred embodiment, the hand dryer further includes a protection device provided on the mounting plate 103 , and the protection device includes a temperature sensor 105 , a control element and a protection element 106 . Among them, the temperature sensor 105 is used to detect the temperature, and when it is detected that the temperature exceeds the threshold, generate a temperature signal and transmit the temperature signal to the control element, and the control element is used to act on the protection element 106, so that the heating device 10 is The active state switches to the inactive state.

The protection device can switch the heating device 10 to an inactive state when it detects that the temperature is high, so that the temperature can be controlled within a preset range, which is beneficial to ensure the overall safety of the hand dryer including the heating device, and also Conducive to improving the service life of the hand dryer.

In a preferred embodiment, the protection element 106 may be configured as a temperature-controlled switch or a fuse. Among them, the size of the fuse wire is small, and the demand for space is small, but the fuse wire needs to be replaced after it is blown. The temperature control switch can be used repeatedly, but compared with the fuse, the size is larger and the space requirement is relatively larger. A fuse is shown schematically in the figure.

In another preferred embodiment, the mounting plate 103 is provided with an accommodating groove 107 , the bottom of the support plate 102 is provided with an escape groove 108 at a position corresponding to the first accommodating groove 107 , and at least a part of the protection element 106 is provided with an escape groove 108 . in the accommodating groove 107 , and the protection element 106 is located in the space enclosed by the accommodating groove 107 and the escape groove 108 . The cooperation between the avoidance groove 108 and the accommodating groove 107 can not only reduce the thickness requirement of the mounting plate 103 but also improve the space utilization rate.

It should be noted that, in other alternative embodiments, the protection element 106 may also be directly disposed on the mounting plate 103 .

In this hand dryer, the heating device 10 can be spaced apart from the rotating second air outlet duct 402, that is, the heating device 10 and the second air outlet duct 402 are two independent structures, or it can be arranged with the rotating second air outlet duct 402. The inner wall of the air duct 402 is located in the second air outlet duct 402 with a gap, that is, the heating device 10 and the second air outlet duct 402 are suspended in the air. The above two arrangement manners can realize that the heating device 10 is not affected by the movement of the rotating second air outlet duct 402 , so that the heating function can be realized more reliably, and the heating effect is better.

Example 2

This embodiment discloses a hand dryer. As shown in FIGS. 4 , 6-9 , and 10-13 , the hand dryer includes a housing, an air outlet duct assembly 40 and a heating device 10 . The air outlet duct assembly 40 includes a first air outlet duct 401 and a second air outlet duct 90402. Both ends of the first air outlet duct 90401 are connected to the housing and the second air outlet duct 90402 respectively. The second air outlet duct 90402 An air outlet is provided on the 90402, and the second air outlet duct 90402 is rotatable relative to the first air outlet duct 90401. The heating device 10 and the second air outlet duct 90402 are arranged at intervals along the air outlet direction; or at least a part of the heating device 10 is located in the second air outlet duct 90402 and a gap is formed between the heating device 10 and the inner wall of the second air outlet duct 90402 .

Wherein, the heating device 10 can be spaced apart from the rotating second air outlet duct 90402, that is, the heating device 10 and the second air outlet duct 90402 are two independent structures, or can be connected with the inner wall of the rotating second air outlet duct 90402. It is located in the second air outlet duct 90402 with a gap, that is, the heating device 10 and the second air outlet duct 90402 are suspended in the air. The above two arrangement manners can realize that the heating device 10 is not affected by the movement of the rotating second air outlet duct 90402, so that the heating function can be realized more reliably, and the heating effect is better. Placing the heating device 10 in the air outlet duct assembly instead of the housing facilitates miniaturization of the hand dryer.

It should be noted that, as shown in FIGS. 10-12 , in this embodiment, the heating device 10 adopts the above-mentioned second setting method, that is, at least a part of the heating device 10 is located in the second air outlet duct 90402, and the heating device 10 It is suspended from the second air outlet duct 90402. The air outlet duct of the hand dryer can be designed to be more compact.

As shown in Figures 10-12, in another preferred embodiment, the housing includes a main housing 20 and a steering housing 30, the steering housing 30 is connected to the top sidewall of the main housing 20, and the steering housing 30 is far away from An air outlet opening is formed at one end of the main casing 20 . One end of the first air outlet duct 90401 is connected to the air outlet opening, and the heating device 10 and the air outlet opening are arranged at least partially staggered.

10 and 11 , the heating device 10 is connected to the inner wall of the first air outlet duct 90401 . The heating device 10 is fixed by being connected to the inner wall of the first air outlet duct 90401 that does not move, instead of being connected to the second air outlet duct 90402 that moves. Therefore, the heating device 10 can be prevented from being affected by the second air outlet duct 90402. The influence of the movement of 90402 is beneficial to ensure the heating effect of the hand dryer. In addition, the heating device 10 and the first air outlet duct 90401 can be detachably connected in an optional embodiment, which is convenient for the installation and removal of the heating device 10 and the installation and removal of other structural components.

In an alternative embodiment, the heating device 10 may also be attached to the inner wall of the housing. This arrangement can also prevent the heating device 10 from being affected by the movement of the second air outlet duct 90402, thereby helping to ensure the heating effect of the hand dryer.

As shown in FIGS. 11-12 and 6-9 , in another preferred embodiment, the heating device 10 includes a support plate 102 and a heating assembly 101 , and the heating assembly 101 is connected to the support plate 102 . An air passage is formed between the heating assembly 101 and the support plate 102, and the air passage communicates between the casing and the air outlet.

In another preferred embodiment, the heating device 10 further includes a mounting plate 103 , the support plate 102 is mounted on the mounting plate 103 , and the mounting plate 103 is detachably connected to the inner wall of the first air outlet duct 90401 .

The mounting plate 103 can support the heating assembly 101 and the support plate 102 , which is beneficial to improve the overall strength of the heating device 10 , thereby improving the reliability of the connection between the heating device 10 and other structures of the hand dryer. Mounting plate 103 may also provide a mounting carrier for other accessories, such as protection element 106 and temperature sensor 105 described below, among others. In addition, the mounting plate 103 also facilitates the connection between the heating device 10 and the first air outlet duct 90401 .

As shown in Figures 10-11, the second air outlet duct 90402 extends into the first air outlet duct 90401 toward the first end of the first air outlet duct 90401 and is rotatable relative to the first air outlet duct 90401. The heating assembly 101 and The support plate 102 is located at the first end of the second air outlet duct 90402 , and the part of the mounting plate 103 extending beyond the first end of the first air outlet duct 90401 is detachably connected to the inner wall of the first air outlet duct 90401 .

11-12 and 13, the first end of the second air outlet duct 90402 (illustrated as the extending end 904021) extends into the first air outlet duct 90401 to facilitate the realization of the second air outlet duct 90402 and the first air outlet duct 90402. For the connection of the air outlet duct 90401, the part of the mounting plate 103 protruding from the first end (ie the protruding end 904021) is connected to the inner wall of the first air outlet duct 90401, which can ensure that the heating device 10 is connected to the first air outlet that does not move. Duct 90401 is connected to the second outlet duct 90402 instead of moving.

It should be noted that, in another preferred embodiment, both the first air outlet duct 90401 and the second air outlet duct 90402 may be configured as a double-layer structure including an inner duct and an outer duct. Specifically, for the first air outlet duct 90401, the mounting plate 103 of the heating device 10 can be detachably connected to the inner duct of the first air outlet duct 90401, and the outer duct of the first air outlet duct 90401 covers the outside of the inner duct. For the second air outlet duct 90402, the inner and outer ducts of the second air outlet duct 90402 are rotated relative to the first air outlet duct 90401 as a whole, and the inner duct of the second air outlet duct 90402 extends into the first air outlet duct 90401. Pipe, the outer pipe of the second air outlet pipe 90402 is sleeved on the outside of the inner pipe of the second air outlet pipe 90402 and is adjacent to the outer pipe of the first air outlet pipe 90401.

It should be noted that, in fact, the heating device 10 can be fastened to the first air outlet duct 90401 by any suitable connection method (preferably by a detachable connection method). 11-12 schematically illustrate one way of connecting by means of the fastening plate 80 . The mounting plate 103 is provided with a fastening plate 80, the fastening plate 80 is provided with a fastening hole 801, and the fastener 90 can pass through the fastening hole 801 and the connection hole on the connecting piece 50 to connect the heating device 10 to the connection Piece 50. In addition, the hand dryer also includes a fixing plate 60. The fixing plate 60 is mainly used to realize the structural splicing of the connector 50 itself. As shown in FIG. 12, both ends of the fixing plate 60 are supported in the radial direction on the first air outlet duct 90401. Between the inner walls on both sides, the fixing plate 60 is provided with a clamping slot 601, and the installation plate 103 of the heating device 10 is clamped in the clamping slot 601, so the fixing plate 60 can also improve the reliability of the connection between the heating device 10 and the first air outlet duct 90401 sex.

In another preferred embodiment, as shown in FIGS. 6-9 , the heating device 10 further includes a first heat insulating element 104 , the first heat insulating element 104 is sheathed on the outside of the heating assembly 101 , and the top of the heating assembly 101 is connected with the first heat insulating element 104 . A gap is formed on the inner wall of the first heat insulating element 104 , and a gap is formed between the outer wall of the first heat insulating element 104 and the inner wall of the second air outlet duct 90402 .

As shown in FIG. 12 , the heating device 10 further includes a second thermal insulation element 109 , the second thermal insulation element 109 is sleeved on the outside of the first thermal insulation element 104 , and the end of the second thermal insulation element 109 is provided with a limiter for limiting The limiting portion 110 for the movement of the first heat insulating element 104 . Wherein, a gap is formed between the outer wall of the second heat insulating element 109 and the inner wall of the second air outlet duct 90402 . The limiting portion 110 is schematically shown as a raised portion.

In another preferred embodiment, as shown in FIGS. 11-12 and 6-9 , the support plate 102 and the mounting plate 103 are plugged together, so that the support plate 102 extends from one side of the mounting plate 103 to the mounting plate 103 on the other side. The support plate 102 and the mounting plate 103 form an X-shaped mounting frame, and the X-shaped mounting frame forms an airflow path composed of four substantially spaced spaces. The plates 103 can be provided with installation grooves (as shown in FIG. 9 , the installation grooves of the support plate 102 are shown as the first installation grooves 1021, and the installation grooves on the installation plate 103 are shown as the second installation grooves 1033) to bypass the electric heating The half of the coiled structure of the electric heating wire also has a gap, which can form a part of the fluid passage; the heating device 101 can also use a structure such as a PTC heating element, an electric heating tube, and the like. The heating device may also include a plurality of support plates 102, and at this time, the cross-sectional shape of the mounting frame formed by the support plates 102 and the mounting plate 103 will also change correspondingly. The first thermal insulation element 104 and the second thermal insulation element 109 are both sleeve structures, the first thermal insulation element 104 is sleeved on the second end of the mounting plate 103 , and the heating assembly 101 and the support plate 102 are located on the first thermal insulation element 104 internal.

Wherein, the support plate 102 and the installation plate 103 are plugged into each other, the connection between the two is simple, and after the two are connected, more accommodating space can be provided to set the heating assembly 101 . In addition, the first heat insulating element 104 and the second heat insulating element 109 are configured as sleeve structures, which facilitates connection with the mounting plate 103 and connection with the external structure. At the same time, arranging the first heat insulating element 104 at the end of the mounting plate 103 with the heating assembly 101 is also beneficial to reduce the weight of the heating device 10 and reduce consumables.

In this hand dryer, the heating device 10 can be spaced apart from the rotating second air outlet duct 90402, that is, the heating device 10 and the second air outlet duct 90402 are two independent structures, or it can be arranged with the rotating second air outlet duct 90402. The inner wall of the air duct 90402 is located in the second air outlet duct 90402 with a gap, that is, the heating device 10 and the second air outlet duct 90402 are suspended in the air. The above two arrangement manners can realize that the heating device 10 is not affected by the movement of the rotating second air outlet duct 90402, so that the heating function can be realized more reliably, and the heating effect is better.

Example 3

Referring to FIG. 14 , this embodiment provides a hand dryer. The hand dryer includes an outer casing 9110. The outer casing specifically includes a main body casing 91101 and an air outlet casing 91102. The bottom of the main body casing 91101 is provided with an inlet The air outlet 9120 and the air outlet housing 91102 are provided with an air outlet 9130. The air source 9140 located in the main body housing 91101 drives the airflow, and the air flows upward from the air inlet 9120 and finally flows out from the air outlet 9130 (the flow direction of the air flow is shown in FIG. 14 . marked with a dotted line). The hand dryer is also provided with a heating device 913 for heating the airflow.

Specifically in this embodiment, as shown in FIG. 14 and FIG. 15 , the hand dryer includes an air inlet channel 911 and a turning channel 912 . The air inlet channel 911 is arranged in the main body casing 91101 , and the turning channel 912 is arranged in the air outlet casing. Inside the body 91102, the turning channel 912 includes a main channel 9121 and a branch channel 9122, the main channel 9121 communicates with the air inlet channel 911, and the branch channel 9122 leads to the air outlet 9130 of the hand dryer. The heating device 913 is arranged in the turning flow channel 912, and the heating device 913 constitutes a gas passage in the turning flow channel 912. The gas passage means that the air flow can flow from one side of the heating component to the other side, which can be achieved by means of the heating device. 913 and other components, such as the gap between the heating device and the air outlet housing 91102; it can also be formed by the gap in the structure of the heating assembly itself.

As a preferred embodiment, the heating device 913 extends from the main flow channel 9121 to the branch flow channel 9122, which can sufficiently heat the airflow. In addition, since the heating device 913 extends from the main channel 9121 to the branch channel 9122, the space for the heating device 913 to be arranged is large, and the design freedom is high. On the basis of satisfying the heating requirements, the effect of the heating device 913 on the airflow can be reduced. In addition, the heating device 913 is arranged along the propagation direction of the airflow, so the airflow can be fully heated, and the heating device 913 with a smaller volume can be used to meet the heating requirement, which is beneficial to the miniaturization of the hand dryer. In addition, the heating devices 913 can be centrally arranged in one area instead of being dispersed in multiple positions of the hand dryer (for example, dispersed in each branch flow channel 9122 ), in this embodiment, the heaters are centrally arranged in the main channel 9121 Therefore, only one heater can be provided, and correspondingly, only one (or one group) of temperature control devices can be provided, which reduces the complexity of the structure, facilitates the simplification of the temperature control design, and facilitates the Assembly and maintenance of hand dryers.

As shown in FIGS. 16 and 17 , the heating device 913 includes a heating bracket 9131 and a heater. The heating bracket 9131 includes a main body portion and an extension portion. The main body portion is located in the main channel 9121 , and the extension portion extends from the main body portion to the branch channel 9122 . , the heater is arranged on the main body part and the extension part. The heating bracket 9131 provides a mounting carrier for the heater, so that the heating device 913 can be integrated into a module. When assembling the hand dryer, the entire heating device 913 can be installed in the turning channel 912 as a whole, which is convenient for drying hands. assembly of the device. Each part of the heating bracket 9131 is adapted to the turning flow channel 912, and the heater can be fully arranged in the turning flow channel 912, so as to ensure the heating effect of the heater on the airflow. Preferably, the extension portion extends into the branch flow channel 9122 and does not exceed the air outlet 9130 to prevent the heating bracket 9131 from affecting the air outlet.

The heater is arranged around the heating bracket 9131, the heating bracket 9131 extends in the turning flow channel 912, and the heater surrounds the heating bracket 9131 and is arranged in the turning flow channel 912 accordingly, so as to meet the layout requirements with a relatively simple structure.

Preferably, the heater includes a heating wire 9132, and the heating wire 9132 is wound on the outside of the heating bracket 9131. The heating wire 9132 has a flexible structure and can be easily wound on the heating support 9131, and the heating wire 9132 can generate a larger contact area with the air, and can achieve a better heating effect with a smaller volume.

The temperature control device is located in the turning flow channel 912, and the temperature control device is configured to control the heating device 913 to stop heating when the temperature in the turning flow channel 912 exceeds a preset value. The temperature control device can monitor the temperature in the steering flow channel 912. If the temperature exceeds the preset value, it means that the steering flow channel 912 is overheated. The high temperature can easily cause damage to the components in the hand dryer. The temperature control device plays a role in the hand dryer. Protective effects.

As a preferred embodiment, the temperature control device includes a temperature sensor 914 for temperature measurement, the temperature sensor 914 is disposed on the main body of the heating bracket 9131, and the temperature sensor 914 is surrounded by the heater. The temperature sensor 914 is located in the middle of the turning flow channel 912 , and can measure the temperature in the turning flow channel 912 relatively accurately.

17 , the heating bracket 9131 includes a main body plate 9133 and a support plate 9134. The main body plate 9133 extends along the extension direction of the branch flow channel 9122. At least a part of the support plate 9134 extends from the main body plate 9133 toward the inner wall of the turning flow channel 912. The extension direction of the body plate 9133 is consistent with the flow direction of the air flow in the branch flow channel 9122, so the body plate 9133 has less resistance to the air flow, and the support plate 9134 at least partially extends toward the inner wall of the turning flow channel 912, so the cross section of the heating bracket 9131 For the X type, the heater is wound on the heating bracket 9131 and can be arranged on the entire circumference of the flow channel to achieve sufficient heating of the airflow.

The heating bracket 9131 includes a support ring 9135 surrounding the body plate 9133 and the support plate 9134 . The body plate 9133 and the support plate 9134 are supported on the turning flow channel 912 by the support ring 9135, and there is a gap between the remaining part of the heating bracket 9131 without the support ring 9135 and the inner wall of the turning flow channel 912, which can provide arrangement for the heater space. Since the support ring 9135 is annular, it occupies a smaller cross-section of the flow channel, and thus has a smaller resistance to airflow.

The support ring 9135 is located at the end of the extension away from the main body. Since the support ring 9135 is located at the end of the heating bracket 9131, the heaters can be centrally arranged in the middle of the heating bracket 9131. Preferably, only one heating wire 9132 can be arranged on the heating bracket 9131, and the heating wire 9132 can be centrally wound around the middle of the heating bracket 9131 , so that the heating of the airflow is realized with a small number of components, and the internal structure of the hand dryer is compact and simple.

As shown in FIG. 17 , the support plate 9134 includes a shielding portion 9136 , a distance exists between the shielding portion 9136 and the main body plate, and the temperature control device is located within the distance. This arrangement makes the arrangement of the internal components of the hand dryer relatively compact, and minimizes the interference of the heating device 913 and the temperature sensing device to the fluid flow.

The body plate 9133 has a first groove extending along its length direction, the support plate 9134 has a second groove extending along its length direction, and the first groove and the second groove are inserted into each other so that the body plate 9133 and the support plate 9134 are connected, wherein The first slot and the second slot are not shown in the figure. The main structure of the heating bracket 9131 is formed by combining plate-shaped parts, and the structure is relatively simple.

In another embodiment, as shown in FIG. 18 , the heating device 9110 includes at least two heaters arranged at intervals, so that the heating of multiple areas can be realized, and it can be applied to the drying machine with a small overall volume and requiring heating in multiple areas. in hand. Due to the spaced arrangement of the heaters, there is no heating wire in the spaced area, and there is no plate structure for winding the heating wire (that is, there is no need to set the cross section of the heating bracket to be X-shaped), and the air flow can flow to the heater through the spaced area, which is beneficial to Heating is achieved with less impact on airflow.

At least two branch flow channels 9122 are respectively extended in a direction away from the main flow channel 9121 , and the heating device 913 extends toward the inside of the two branch flow channels 9122 from the main flow channel 9121 . By arranging multiple branch flow channels 9122, airflow can be drawn in multiple directions to meet different hand drying requirements. Since each branch flow channel 9122 is provided with a heating device 913, each airflow can be fully heated, ensuring that The final hand drying effect; when the heater includes the heating wire 9132, since the shape of the heating wire 9132 is free, even if there are multiple branch flow channels 9122, only one heating wire 9132 can be used to adapt to the internal shape of the hand dryer.

Example 4

As shown in FIGS. 6-9 , this embodiment discloses a heating device 10 , which includes at least two heating components arranged at intervals, and each heating component includes a support plate 102 and a heating element 101 connected to the support plate 102 . The location where the heating components are located can be formed with air flow passages that communicate with the spaced regions of the at least two heating components.

In this embodiment, the heating device 10 includes at least two heating components arranged at intervals, so that heating of multiple areas can be realized, and it can be applied to a structure (such as a hand dryer) with a small overall volume and requiring heating in multiple areas. . In addition, the existence of the airflow passage facilitates the realization of the circulation of the gas, thereby helping to reduce the flow resistance and reduce the influence on the air outlet effect of the hand dryer. For example, when the heating device 10 is applied to a hand dryer, it is beneficial to achieve heating on the basis of less influence on the airflow. The airflow path means that the airflow can flow from one side of the heating component to the other side, which can be formed by the gap between the heating component 101 and other components, such as the support plate 102, or the gap formed by the heating component itself. Since the heating parts are spaced apart, the air flow can flow to the heating parts through the spaced areas, that is, after the heating device is placed in the hand dryer, an air flow path can be formed from the spaced areas of the heating parts to the heating parts.

It should be noted that the number of heating components shown in FIGS. 6-9 is two. In fact, according to actual design requirements, the number of heating components can be set to three or more.

In a preferred embodiment, the heating elements 101 in at least two heating elements are connected in series to the circuit.

Wherein, by adopting the above structure, the heating components 101 in at least two heating components are connected in series first and then connected to the circuit. Compared with each heating component 101 being connected to the circuit individually, this structure is conducive to simplifying the circuit structure, the wiring is relatively simple, and the It is beneficial to reduce the space occupied by the heating device 10 as a whole.

In another preferred embodiment, as shown in FIGS. 6-9 , the heating assembly 101 is wound on the support plate 102 , and a gap is formed between the inner side of the heating assembly 101 and at least one side of the support plate 102 to form an air flow passage. In addition, when the heating device 10 is placed in the hand dryer, the air passage can also be formed between the heating element and the housing of the hand dryer.

Wherein, the airflow passage may be formed only between one side of the support plate 102 and the heating assembly, or may be formed between two sides of the support plate 102 and the heating assembly. Wherein, compared with the former, the latter is more conducive to realizing the circulation of gas, which is further conducive to ensuring the air outlet effect of the hand dryer including the heating device 10 .

In another preferred embodiment, a gap is formed between the inner side of the heating assembly 101 and both sides of the support plate 102 to form an air flow passage.

In another preferred embodiment, the heating assembly 101 is wound around the outside of the support plate 102 along the length direction of the support plate 102 , so that the extending direction of the airflow passage is parallel to the length direction of the support plate 102 .

Wherein, by adopting the above structure arrangement, the structure of the heating component is relatively simple, and it is also convenient to realize the circulation of gas, which is beneficial to ensure the air outlet effect of the hand dryer including the heating device 10 .

In another preferred embodiment, the heating component further includes a mounting plate 103 , the first ends 1031 of the mounting plates 103 of adjacent heating components are connected, and the support plate 102 is arranged on the mounting plate 103 and is located at the second end of the mounting plate 103 . end 1032. Specifically, as shown in FIGS. 6-9 , the mounting plate 103 of each heating component can be assembled into an integral plate-like structure.

Among them, on the one hand, the mounting plate 103 can support the heating assembly 101 and the supporting plate 102, which is beneficial to improve the overall strength of the heating device 10, and can also provide a mounting carrier for other accessories, such as the protection element 106 described below. and the temperature sensor 105, etc.; on the other hand, the mounting plates 103 of adjacent heating components are connected to each other, which is beneficial to connect these heating components as a whole, which is convenient for installation.

In another preferred embodiment, the heating component further includes a heat insulating element 104 , and the outer cover of each heating assembly 101 is provided with a heat insulating element 104 .

The heat insulating element 104 can prevent the heat generated by the heating assembly 101 from diffusing to the outside, which can not only prevent the waste of energy, improve the heating effect, but also reduce or even prevent damage to the external structure.

It should be noted that, the heat insulating element 104 can adopt any suitable material capable of heat insulating.

In another preferred embodiment, as shown in FIGS. 6-9 , the support plate 102 and the mounting plate 103 are plugged together, so that the support plate 102 extends from one side of the mounting plate 103 to the other side of the mounting plate 103; The support plate 102 and the mounting plate 103 form an X-shaped mounting frame. The X-shaped mounting frame forms an airflow path composed of four substantially spaced spaces. The heating assembly 101 can be specifically selected from an electric heating wire, the support plate 102 and the installation frame. The plates 103 can be provided with installation grooves (as shown in FIG. 9 , the installation grooves of the support plate 102 are shown as the first installation grooves 1021, and the installation grooves on the installation plate 103 are shown as the second installation grooves 1033) to bypass the electric heating The half of the coiled structure of the electric heating wire also has a gap, which can form a part of the fluid passage; the heating component 101 can also be made of a PTC heating element, an electric heating tube and other structures. The heating device may also include a plurality of support plates 102, and at this time, the cross-sectional shape of the mounting frame formed by the support plates 102 and the mounting plate 103 will also change correspondingly.

The heat insulating element 104 is a sleeve structure, the heat insulating element 104 is sleeved on the second end of the mounting plate 103 , and the heating assembly 101 and the support plate 102 are located inside the heat insulating element 104 .

Wherein, the support plate 102 and the mounting plate 103 are plugged into each other, the connection between the two is simple, and after the two are connected, more accommodating space can be provided for setting the connection components. In addition, the heat insulating element 104 is configured as a sleeve structure, which is convenient for connecting with the mounting plate 103 and connecting with the external structure. At the same time, disposing the heat insulating element 104 at the end of the mounting plate 103 with the heating assembly 101 is also beneficial to reduce the weight of the heating device 10 and reduce consumables.

It should be noted that, in other alternative embodiments, the heat insulating element 104 may be provided in other structures, and in addition, the heat insulating element 104 may also be provided within the entire extension range of the mounting plate 103 .

In an alternative embodiment, as shown in FIGS. 7-8 , the heat insulating element 104 may be provided as an integral structure with the support plate 102 and the mounting plate 103 .

In another preferred embodiment, a gap is formed between one end of the heating assembly 101 close to the inner wall of the thermal insulation element 104 and the inner wall of the thermal insulation element 104 .

Wherein, a gap is formed between the heating element 101 and the heat insulating element 104, which can not only prevent friction between the heating element 101 and the heat insulating element 104 from damaging the heating element 101, but also help to increase the airflow passage, thereby reducing the airflow. resistance.

In another preferred embodiment, the insulating element 104 is made of mica.

Among them, mica has good thermal insulation performance, insulation performance and chemical stability, which is beneficial to ensure the overall stability and reliability of the heating device 10 .

In another preferred embodiment, the heating component further includes a protection device provided on the mounting plate 103, and the protection device includes a temperature sensor 105, a control element and a protection element 106;

Wherein, the temperature sensor 105 is used to detect the temperature, and when it is detected that the temperature exceeds the threshold, the temperature signal is generated and used to transmit the temperature signal to the control element, and the control element is used to act on the protection element 106, so that the heating element 101 is The active state switches to the inactive state.

Wherein, the protection device can switch the heating assembly 101 to an inactive state when it detects that the temperature is high, so that the temperature can be controlled within a preset range, which is beneficial to ensure the overall safety of the hand dryer including the heating device 10. It is also beneficial to increase the service life of the hand dryer.

In another preferred embodiment, the protection element 106 is a temperature-controlled switch or a fuse.

Among them, the size of the fuse wire is small, and the demand for space is small, but the fuse wire needs to be replaced after it is blown. The temperature control switch can be used repeatedly, but compared with the fuse, the size is larger and the space requirement is relatively larger.

In another preferred embodiment, the mounting plate 103 is provided with an accommodating groove 107 , the bottom of the support plate 102 is provided with an escape groove 108 at a position corresponding to the first accommodating groove 107 , and at least a part of the protection element 106 is provided with an escape groove 108 . in the accommodating groove 107 , and the protection element 106 is located in the space enclosed by the accommodating groove 107 and the escape groove 108 .

The cooperation between the avoidance groove 108 and the accommodating groove 107 can not only reduce the thickness requirement of the mounting plate 103 but also improve the space utilization rate.

As shown in FIG. 7 and FIG. 8 , a temperature sensor is provided on the mounting plate 103 of one of the heating components, and a protection element 106 is provided in the accommodating groove 107 of the mounting plate 103 of the other heating component (the diagram schematically shows a fuse Silk).

As shown in FIG. 2 , FIG. 4 , and FIG. 19 , an embodiment of the present specification further provides a hand dryer, which includes a housing, at least two air outlet duct assemblies 40 and the above-mentioned heating device 10 . The air outlet duct assembly 40 communicates with the housing, an air outlet (not shown in the figure) is opened on the air outlet duct assembly 40, and at least two air outlet duct assemblies 40 are arranged at intervals. The heating components are disposed adjacent to the corresponding air outlet duct assemblies 40 , and the heating components and the air outlets are at least partially staggered, and the spaced regions of at least two heating elements are at least partially overlapped with the spaced regions of at least two air outlet duct assemblies 40 . The airflow passage communicates between the housing and the air outlet.

Two air outlet duct assemblies 40 are shown schematically in FIG. 19 . It should be understood that in other alternative embodiments, three or more may be set according to actual design requirements.

The air flow from the interior of the casing enters the air outlet duct assembly 40 and the heating assembly 101 through the overlapping or partially overlapping interval areas, and reaches the air outlet under the action of the air flow passage, which can reduce the resistance in the gas flow process. The setting of the heating assembly 101 will basically not block the flow of the air, and will not affect the air outlet effect of the hand dryer. As before, the heating device 10 can be applied to a hand dryer that has a small overall volume and requires multi-zone heating. Therefore, the hand dryer including the heating device 10 can achieve heating in multiple zones, and the hand dryer can be set to A hand dryer with a smaller overall size.

In another preferred embodiment, as shown in FIG. 2 , FIG. 4 , and FIG. 19 , the housing includes a main housing 20 and a steering housing 30 , the steering housing 30 is connected to the top sidewall of the main housing 20 , and the steering housing 30 is The end of the casing 30 away from the main casing 20 forms an air outlet opening (not shown in the figure); at least two air outlet duct assemblies 40 are respectively connected with the air outlet opening, the heating component and the air outlet opening are at least partially staggered, and the airflow The passage communicates between the air outlet and the air outlet opening; the heating assembly 101 is located in the air outlet duct assembly 40 .

Wherein, the heating component and the air outlet opening are at least partially staggered, that is to say, the heating component has little blocking effect on the airflow from the main casing 20, or does not block the airflow from the main casing 20 at all, which is beneficial to the On the basis of ensuring the air outlet effect of the hand dryer, the heating function is realized. In addition, disposing the heating assembly 101 in the air outlet duct assembly 40 instead of the main casing 20 of the hand dryer is beneficial to the miniaturized design of the hand dryer.

Figure 4 schematically shows the air flow path within the hand dryer. Specifically, in this embodiment, the bottom of the main casing is provided with an air inlet, the internal air source 70 in the main casing 20 generates a flowing air flow, and the air enters the flow channel in the main casing through the air inlet and enters the steering casing 30 The flow channel is discharged through the air flow channel to the air outlet. Wherein, the internal air source 70 is mainly used to provide airflow, and may be an existing device for generating airflow, such as a fan and an air pump. The internal air source 70 is fixed inside the main casing 20 and can be driven by an external power source or a built-in power source. Among them, the dashed line with arrows schematically shows the ejection direction of the airflow.

In another preferred embodiment, the heating element is completely staggered from the air outlet.

Wherein, the heating component and the air outlet are completely staggered, which means that the heating component will not restrict the air outlet at all, thereby further ensuring the air outlet effect of the hand dryer.

In another preferred embodiment, the hand dryer further includes a connecting piece 50 , the connecting piece 50 is connected and communicated between the air outlet duct assembly 40 and the air outlet opening, and the heating component is located in the accommodating cavity inside the connecting piece 50 . .

The connector 50 carries the heating component, which facilitates the staggered arrangement of the heating component, the air outlet and the air outlet. In addition, the connector 50 can also strengthen the heating component.

It should be noted that the heating device 10 is connected to the connecting piece 50. In fact, the heating device 10 can be fastened to the accommodating cavity of the connecting piece by any suitable connecting means (preferably detachable connecting means). FIG. 2 schematically illustrates one way of connecting by means of the fastening plate 80 . The mounting plate 103 is provided with a fastening plate 80 , and the fastening plate 80 is provided with a fastening hole 801 , and the heating device 10 can be connected to the connecting piece by passing through the fastening hole 801 and the connecting hole on the connecting piece 50 . 50 on. In addition, the hand dryer further includes a fixing plate 60 . The fixing plate 60 is mainly used to realize the structural assembly of the connector 50 itself. As shown in FIG. 2 , both ends of the fixing plate 60 are supported on the connector 50 along the radial direction of the connector 50 . Between the inner walls of the two sides, the fixing plate 60 is provided with a slot 601, and the mounting plate 103 of the heating device 10 is locked in the slot 601, so the fixing plate 60 can also improve the reliability of the connection between the heating device 10 and the connector 50.

In another preferred embodiment, there is a gap between the top of the heating component and the wall surface of the accommodating cavity.

Wherein, by adopting the above structure, on the one hand, the friction between the heating part and the connecting piece can be reduced or avoided, which is beneficial to protect the heating part; , it is easy to control the temperature inside the hand dryer.

In the embodiment of the present specification, the heating device 10 includes at least two heating components arranged at intervals, so that the heating of multiple areas can be realized, and the heating device 10 can be applied to a structure (such as a hand dryer) with a small overall volume and requiring heating in multiple areas. middle. In addition, the existence of the air flow passage between the heating assembly 101 and the support plate 102 in the heating component facilitates the realization of gas circulation, thereby helping to reduce the flow resistance and reduce the influence on the air outlet effect of the hand dryer. In addition, in the embodiment of the present specification, the air flow from the interior of the casing enters the air outlet duct assembly 40 and the heating assembly 101 through the overlapping or partially overlapping interval regions, and reaches the air outlet under the action of the air flow passage, which can reduce the number of The resistance in the air flow process, the setting of the heating assembly 101 will basically not block the flow of the air flow, and will not affect the air outlet effect of the hand dryer. In addition, the hand dryer including the above-mentioned heating device 10 can realize heating in multiple regions, and the hand dryer can be configured as a hand dryer with a smaller overall volume.

Example 5

This embodiment discloses a heating device. As shown in FIGS. 6-9 , the heating device 10 includes a mounting plate 103 , at least two supporting plates 102 and at least two heating components. Wherein, the mounting plate 103 is provided with a connection structure. At least two supporting plates 102 are arranged on the mounting plate 103 at intervals. At least two heating assemblies are wound on at least two supporting plates 102 in a one-to-one correspondence. Among them, only two support plates 102 and two heating assemblies are schematically shown in FIGS. 6-9 .

In this embodiment, the connection structure on the mounting plate 102 is convenient to realize the connection between the heating device and the external structure (such as the connection member in the above-mentioned Embodiment 1), so as to realize the fixing of the heating device. At least two heating components are arranged on at least two supporting plates arranged at intervals, so that at least two heating components are arranged at intervals, which can realize heating of multiple regions, and can be applied to structures with a small overall volume and requiring multi-region heating ( such as hand dryers).

It should be noted that all the structural features of the heating device 10 disclosed in Embodiment 4 are applicable to this.

Example 6

Referring to FIG. 20 , this embodiment provides a hand dryer. The hand dryer includes a main casing 9210 . The bottom of the hand dryer is provided with an air inlet 9220 and the upper part is provided with an air outlet 9230 , which is located in the main casing 9210 The air source 9240 drives the air flow, and the air flows upward from the air inlet 9220, and finally flows out from the air outlet 9230 (the flow direction of the air flow is indicated by a dot-dash line in FIG. 20). The hand dryer is also provided with a heating device for heating the air flow, so that the air flow out of the air outlet opening 9230 is hot air.

In this embodiment, the hand dryer further includes a hand dryer air conditioner 9250, the hand dryer air conditioner 9250 is connected to the main casing 9210 and communicated with the air source 9240, and the air flow enters the dry hand from the main casing 9210 air conditioner 9250, and finally discharged from the air conditioner 9250 of the hand dryer.

Specifically, as shown in FIGS. 21 to 25 , the air conditioner 9250 of the hand dryer includes a fixed casing 921, a rotating casing 922 and a limiting mechanism, wherein the fixed casing 921 has a first inner cavity 9211, and the rotating casing 922 has a second inner cavity 9221, the second inner cavity 9221 communicates with the first inner cavity 9211 through the air inlet opening, and the side wall of the rotating housing 922 has an air outlet opening 9230 which communicates with the second inner cavity 9221, and the air flow from the main The casing 9210 enters the first inner cavity 9211, then passes through the second inner cavity 9221, and is discharged from the air outlet opening 9230.

The rotating casing 922 is rotatably connected to the fixed casing 921. By rotating the rotating casing 922, the direction of the air outlet opening 9230 can be changed, so that the direction of the air outlet opening 9230 can be adjusted to meet different usage needs. The limiting mechanism is configured to make the fixed housing 921 and the rotating housing 922 rotate within a predetermined angle range, and the limiting mechanism can limit the rotation range of the rotating housing 922 to prevent the air outlet 9230 from turning in an unfavorable direction. The air opening 9230 faces upward, and water droplets easily enter the hand dryer through the air outlet opening 9230, which affects the service life of the hand dryer and even causes a short circuit. This problem can be avoided by the limiting mechanism.

The user can hold the entire rotating housing 922 to adjust the air outlet direction. The hand dryer air regulating device 9250 of this solution can exert force over a larger area, which makes it easier for the user to exert force and is easy to operate.

In this embodiment, the limiting mechanism includes a limiting protrusion 923 and a limiting groove 924 , one of the limiting protrusion 923 and the limiting groove 924 is provided on the fixed housing 921 and the other is provided on the rotating housing 922 On the upper side, the limiting protrusion 923 is movably disposed in the limiting groove 924, wherein when the rotating housing 922 rotates to the first angle relative to the fixed housing 921, the limiting protrusion 923 abuts against the position of the limiting groove 924. The first inner wall 9241 ; when the rotating casing 922 rotates to a second angle relative to the fixed casing 1 , the limiting protrusion 923 abuts against the second inner wall 9242 of the limiting groove 924 . Using the cooperation between the limiting protrusion 923 and the limiting groove 924, the rotating housing 922 can be rotated between the first angle and the second angle, and at the same time, the limiting protrusion 923 and the limiting groove 924 can also rotate against the rotation The housing 922 functions as an axial limiter.

The rotating housing 922 has an annular groove 925, the limiting protrusion 923 is located in the annular groove 925, the fixed housing 921 has an annular protrusion matching with the annular groove 925, and the limiting groove 924 is formed on the annular protrusion. The annular groove 925 of the rotating casing 922 is matched with the annular protrusion of the fixed casing 921, so as to play a role in the rotation of the rotating casing 922. The limiting protrusion 923 is directed from the bottom of the annular groove 925 to the mouth of the annular groove 925. and the movement range of the limiting protrusion 923 is limited within the limiting groove 924 .

In this embodiment, as shown in FIG. 22 to FIG. 24 , the rotating housing 922 includes an air duct outer casing 9222 and an air duct inner casing 9223 , the air duct inner casing 9223 is fixedly arranged in the air duct inner casing 9223 , and the air outlet opening 9230 is opened in the air duct inner casing 9223 . The outer casing 9222 of the air duct, the side wall of the inner casing 9223 of the air duct is formed with an outlet slit 9224 which communicates with the interior of the inner casing 9223 of the air duct. Corresponding to the position of 9230 , preferably, the width of the air outlet slit 9224 is smaller than the width of the air outlet opening 9230 .

The rotating casing 922 includes an inner and outer two-layer casing, which improves the thermal insulation performance of the rotating casing 922, reduces the heat loss, improves the energy utilization rate, and can also prevent the surface temperature of the rotating casing 922 from being too high. You will not get burned when you touch the rotating housing 922 to adjust the wind direction.

As shown in FIG. 22 , there is a space between the outer casing 9222 of the air duct and the inner casing 9223 of the air duct to form a thermal insulation layer 9225 . The space between the outer casing 9222 of the air duct and the inner casing 9223 of the air duct forms an insulating layer 9225, which prevents or slows the conduction of heat to the outer casing 9222 of the air duct. The thermal insulation layer 9225 can be an air layer, that is, no other materials are arranged in the thermal insulation layer 9225, or thermal insulation materials, such as thermal insulation cotton, thermal insulation foam, etc., can be arranged in the thermal insulation layer 9225 to further improve the thermal insulation effect.

As shown in FIG. 23 , an annular wind baffle 9226 is arranged between the air duct outer shell 9222 and the air duct inner shell 9223, the annular wind baffle 9226 surrounds the outer circumference of the air outlet, and the annular wind baffle 9226 extends from the air duct outer shell 9222 to the air outlet. Channel Inner Shell 9223. The annular wind deflector 9226 can guide the airflow and prevent the airflow from entering the thermal insulation layer 9225, thereby reducing energy loss. Moreover, the annular wind deflector 9226 forms a supporting and positioning function between the air duct outer shell 9222 and the air duct inner shell 9223.

The length of the limiting groove 924 along the arc surface is 10%-80% of the entire circumference of the annular protrusion, preferably 15%-50%. If the length of the limiting slot 924 is too small, the movable range of the rotating housing 922 is too small to meet the requirements of various air outlet directions. If the length of the limiting slot 924 is too large, the air outlet opening 9230 can face almost any direction. The direction loses the meaning of the limit.

As shown in FIG. 25 , the fixed housing 921 includes a first housing portion 9212 and a second housing portion 9213 that are fastened to each other, the annular protrusion includes a first protruding portion 9217 located on the first housing portion 9212, and A second raised portion 9218 on the second housing portion 9213. The fixed housing 921 is formed by buckling the first housing part 9212 and the second housing part 9213, and the first protruding part 9217 and the second protruding part 9218 are spliced together to form an annular protrusion. Moreover, by opening the first housing part 9212 and the second housing part 9213, the internal structure of the fixed housing 921 can be exposed to the outside, which is convenient for inspection and maintenance.

Further, in this embodiment, the fixed casing 921 further includes an outer casing 9214 sleeved on the outside of the first casing part 9212 and the second casing part 9213 , and the outer casing 9214 is preferably cylindrical, which can play a role in The function of preventing separation of the first case portion 9212 and the second case portion 9213. Similar to the rotating casing 922, the fixed casing 921 also has an inner and outer casing, thereby improving the heat insulation effect, preventing the outer surface temperature of the fixed casing 1 from being too high, avoiding scalding, and improving the safety of the hand dryer.

As shown in FIG. 24 to FIG. 26 , the annular groove 925 of the rotating housing 922 is provided on the outer periphery of the inner housing 9223 of the air duct, and the annular groove 925 can be matched with the annular protrusion of the fixed housing 921 .

The fixed casing 921 has an air outlet port 9215 communicating with the first inner cavity 9211 , and the rotating casing 922 is partially inserted into the fixed casing 921 through the air outlet port 9215 . Through the air outlet port 9215, the rotating casing 922 can partially extend into the first inner cavity 9211, which reduces the contact between the airflow generated by the hand dryer and the fixed casing 921, and the airflow directly enters the rotating casing 922 as much as possible. , reducing the risk of air leakage.

The fixed housing 921 also has an air inlet port 9216 . The air inlet port 9216 is used to connect with the main housing 9210 of the hand dryer, and the air flow generated by the hand dryer enters the fixed housing 921 through the air inlet port 9216 . An air inlet side opening 9227 is opened on the side of the portion of the rotating housing 922 located in the fixed housing 921 , and the air inlet side opening 9227 faces the air inlet port 9216 . Since the air inlet side opening 9227 is disposed toward the air inlet port 9216, the air output from the main housing 9210 of the hand dryer can directly flow into the rotating housing 922, and try to prevent the airflow from flowing between the fixed housing 921 and the rotating housing 922, reducing the Airflow loss.

The fixed housing 921 may be provided with a plurality of air outlet ports 9215 , and each air outlet port 9215 is provided with a rotating housing 922 correspondingly. The multiple rotating housings 922 can lead out multiple airflows, and each rotating housing 922 can independently adjust the wind direction, so as to meet various usage scenarios of dry hands. In this embodiment, the fixed casing 921 has two air outlet ports 9215, so that two air flows can be drawn out. The two air outlet ports 9215 are respectively located on both sides of the fixed casing 921, and the two sides of the fixed casing 921 are provided on each side. There is an outer casing 9214 (only one outer casing 9214 is shown in Figure 25). Since there are two air outlet ports 9215, two air outlet openings 9230 can be correspondingly provided, so that hands can be dried at the same time.

Since the hand dryer has the same hand dryer air regulating device 9250 as before, by rotating the rotating housing 922, the direction of the air outlet opening 9230 can be changed, so that the air outlet direction of the hand dryer can be adjusted, and the user can hold the entire rotation The housing 922 adjusts the air outlet direction, and the air regulating device 9250 of the hand dryer in this solution can exert force on a larger area, which makes it easier for the user to exert force and is easy to operate.

Example 7

Hereinafter, embodiments of the present specification are described with reference to the accompanying drawings. As shown in FIGS. 27 and 29 , the blowing device includes: a base 931 , and a blowing main body 932 detachably arranged on the base 931 . The blowing main body 932 includes a connecting handle 933 and an air outlet duct 934 rotatably connected to the connecting handle 933 , and the air outlet duct 934 is connected vertically or bent with the connecting handle 933 when it rotates to a preset angle. An air outlet 9340 is opened on the side wall of the air outlet duct 934 .

As shown in FIG. 29, the blower 934 is vertically connected with the connecting handle 933. The user can remove the blowing body 932 from the base 931, hold the connecting handle 933, and use the blowing device 93100 as a hair dryer. The blower 934 and the connecting handle 933 are arranged coaxially.

As shown in FIG. 27, when the blowing device 93100 needs to be used as a hand dryer, the connecting handle 933 is installed on the base 931, the air outlet duct 934 is bent and connected to the connecting handle 933, and the air outlet duct 934 is extended to connect On the outside of the handle 933, the air outlet 9340 is also located on the outside of the connecting handle 933, which is convenient for users to stretch their hands under the air outlet 9340 to blow air, which is convenient for use. And depending on the type of the blowing device 93100, the included angle between the connecting handle 933 and the air outlet duct 934 can be various angles such as 90°, 100° or 120°.

It is not difficult to find from the above content that the base 931 and the blowing main body 932 are detachably connected, and the blowing main body 932 includes a connecting handle 933 and an air outlet duct 934. When the air outlet duct 934 is vertically connected with the connecting handle 933, the blowing main body 932 is removed from the base. Remove the seat 931, hold the main body 932 of the blower, and the air outlet 9340 on the side wall of the air outlet duct 934 emits air, so that the blower 93100 can be used as a hair dryer. The blower body 932 is arranged on the base 931, the base 931 is placed on the bearing surface, and the blower 934 is rotated so that the connecting handle 933 and the blower 934 are bent and connected to change the blowing direction. The device 93100 is used as a hand dryer. The air outlet 9340 on the side wall of the air outlet 934 emits air, and the hand can be blown over a large area by the airflow under the air outlet 934, which makes the user feel better. The hair dryer 93100 can be used as a hand dryer and a hair dryer, and also allows users to reduce the purchase of small household appliances, reduce consumption costs, and save storage space.

As shown in FIGS. 28 , 30 and 33 , the connection handle 933 accommodates a motor 9351 , an impeller driven by the motor 9351 , and a circuit board 9352 electrically connected to the motor 9351 . The connecting handle 933 is provided with an air inlet 9330 , and the inner cavity of the connecting handle 933 communicates with the inner cavity of the air outlet 934 . The motor 9351 drives the impeller to rotate the air flow from the air inlet 9330 into the connecting handle 933 and then into the air outlet 934 , and blows out from the air outlet 9340 of the air outlet 934 .

In addition, as shown in FIGS. 28 , 30 and 33 , the connecting handle 933 also accommodates a heating element 9353 electrically connected to the circuit board 9352 , and the heating element 9353 may be a heating wire or a heating tube. The heating element 9353, the motor 9351, and the circuit board 9352 are arranged in order from top to bottom. When the hot air needs to be released, the heating element 9353 is turned on, the air flows through the heating element 9353, and the hot air is blown out from the air outlet 9340. The circuit board 9352 extends in the axial direction of the connection handle 933 . The circuit board 9352 separates the inner cavity of the connection handle 933 to form two channels, and the channels both extend along the axis direction of the connection handle 933 and communicate with the air outlet duct 934 . It can be understood that the heating element 9353 can also be arranged in the air outlet 934 .

As shown in FIG. 28 , FIG. 30 and FIG. 33 , the blower body 932 has a main control module electrically connected with the circuit board 9352 . An induction module 9356 electrically connected to the main control module is disposed near the air outlet 9340. The main control module is used to receive a trigger signal from the induction module 9356 after the induction module 9356 is turned on, and to control the motor 9351 to turn on after receiving the trigger signal. The sensing module 9356 can be an infrared sensor or a photoelectric sensor or the like. When the blowing device 93100 is used as a hand dryer, the sensing module 9356 can be turned on. When the hand is close to the air outlet 9340, the sensing module 9356 senses the hand, and the blowing device 93100 starts to blow air; when the hand leaves the air outlet 9340, the air blows Device 93100 stops venting. And the sensing module 9356 can be turned on and off through a key switch.

In addition, as shown in FIGS. 27 , 28 and 29 , the connecting handle 933 has a switch assembly 9355 electrically connected to the circuit board 9352 . The switch assembly 9355 includes an air volume switch key and a temperature switch key. The air volume switch key is used to adjust the wind speed, and the temperature switch key is used to turn on or off the heating element 9353 to change the temperature of the blown airflow. The switch assembly 9355 may also include a switch key of the sensing module 9356, and the like.

Further, as shown in FIGS. 28 and 30 , the air outlet 934 includes: an inner cylinder 9341 rotatably connected with the connecting handle 933 , an outer cylinder 9342 sleeved outside the inner cylinder 9341 , and the air outlet 9340 penetrates through the inner cylinder body 9341 and outer cylinder 9342. The top of the inner cylinder 9341 is provided with an inner top cover 9343, and the top of the outer cylinder 9342 is provided with an outer top cover 9344. In order to make the sensing module 9356 work sensitively, and the airflow flowing in the air outlet 934 does not interfere with the sensing module 9356 . The sensing module 9356 is embedded on the outer cylinder 9342 and is located between the inner top cover 9343 and the outer top cover 9344 .

In addition, as shown in FIGS. 27 and 29, the air inlet 9330 is opened on the side wall of the connecting handle 933, and the connecting handle 933 is also provided with a filter element 936 opposite to the air inlet 9330, and the filter element 936 can be a metal mesh .

Further, as shown in FIGS. 27 , 28 , 29 and 30 , the air outlet 9340 extends along the axial direction of the air outlet duct 934 , so that the air flow can flow out from the same side and flow through the part to be blown in a large area.

Further, as shown in FIG. 27 , FIG. 28 , FIG. 29 and FIG. 30 , the side wall of the air outlet duct 934 is provided with a concave cavity 937 extending along the axial direction of the air outlet duct 934 , and the air outlet 9340 is opened in the concave cavity 937 bottom of. Through the setting of the cavity 937, the air flow from the air outlet 9340 is guided, so that the air flows out in the space of the cavity 937, and will not be concentrated in the air outlet 9340 to blow towards the part to be blown, which improves the sense of use and is more practical Usage requirements.

Optionally, as shown in FIG. 27 , FIG. 28 , FIG. 29 and FIG. 30 , the side wall of the cavity 937 is an inclined surface that is inclined and gathered toward the bottom of the cavity 937 , so as to guide the airflow flowing out of the air outlet 9340 . The side walls of the cavity 937 can also be vertical planes perpendicular to the bottom of the cavity 937 .

Further, as shown in FIG. 27 , FIG. 28 , FIG. 29 and FIG. 30 , the concave cavity 937 is provided on the side wall of the inner cylinder 9341 . The outer cylinder 9342 is sleeved outside the inner cylinder 9341, and the outer cylinder 9342 is provided with an opening, and the opening and the cavity 937 are oppositely arranged and communicated with each other. Cavity cover 938 fits into the opening. And cover the side wall of the cavity 937 . The cavity cover 938 matches the shape of the sidewall of the cavity 937 . And the outer side of the cavity cover 938 is flush with the outer cylinder 9342, so that the inner cylinder 9341 and the outer cylinder 9342 in the cavity 937 area smoothly transition, and the outer surface of the air outlet 934 has better integrity.

In addition, as shown in FIG. 28 and FIG. 30 , the air outlet duct 934 and the connecting handle 933 are rotationally connected, and the air outlet duct 934 and the connecting handle 933 are vertically connected or connected by bending through the rotational connection. The bottom end of the air outlet duct 934 and the top end of the connecting handle 933 are located on the same chamfered plane, and the air outlet duct 934 rotates around the normal line of the chamfered plane relative to the connecting handle 933, and the bottom end of the air outlet duct 934 is at least partially connected to the chamfered plane. The top ends of the connecting handles 933 overlap. The connecting handle 933 is always connected to the air outlet duct 934 so that the air flow can flow out from the air outlet duct 934 . Preferably, the bottom end of the air outlet duct 934 and the top end of the connecting handle 933 have the same shape and area, and match, and when the air outlet duct 934 rotates around the connecting handle 933, the bottom end of the air outlet duct 934 and the top end of the connecting handle 933 are always relative.

As shown in FIGS. 28 and 30 , the bottom end of the air outlet duct 934 has a first connecting piece 9391 , and the top end of the connecting handle 933 has a second connecting piece 9392 , and the first connecting piece 9391 is rotatably connected with the second connecting piece 9392 . The first connecting member 9391 is a first support plate, and the first support plate has a first hollow area 9395 that communicates with the inside of the air outlet duct 934 . The second connecting member 9392 is a second supporting plate, and the second supporting plate has a second hollow area 9396 communicating with the interior of the connecting handle 933 . The first support plate and the second support plate are connected with pins and are parallel to the chamfered plane. The first support plate has a protruding piece 9393, and the second support plate has a rotating shaft 9394 inserted into the protruding piece 9393, and the rotating shaft 9394 extends along the normal direction of the chamfered plane. Alternatively, the protruding member 9393 is provided on the second support plate, and the first support plate is provided with a rotating shaft 9394 inserted into the protruding member 9393.

In another embodiment, both the first connecting member 9391 and the second connecting member 9392 can be support rods, the support rods extend axially and are respectively connected with the air outlet duct 934 and the connecting handle 933, and the two support rods are connected by rotation. .

Specifically, as shown in FIG. 28 and FIG. 30 , the connecting handle 933 includes an inner handle 9331 and an outer handle 9332 sleeved outside the inner handle 9331, and the surface where the bottom end of the outer cylinder 9342 and the top end of the outer handle 9332 are located is located at The same chamfered surface, with the same area and the same shape, match each other. When the connecting handle 933 rotates with the air outlet duct 934, the bottom end of the outer cylinder 9342 and the top end of the outer handle 9332 rotate in contact with each other. The first support plate is arranged in the inner cylinder 9341 and is fixed with the inner wall surface of the inner cylinder 9341. The second support plate is located in the outer handle 9332 and fixed with the inner wall surface of the outer handle 9332, so that the connection handle 933 and the air outlet duct 934 are connected. The connection is more stable, and the inner cavity of the inner cylinder 9341 is connected with the inner cavity of the inner handle 9331 through the first hollow area 9395 and the second hollow area 9396 .

As shown in FIGS. 28 and 30 , the base 931 has a receiving cylinder 9311 into which the connecting handle 933 is inserted, and a supporting portion 9312 extending from the bottom end of the receiving cylinder 9311 to the periphery and extending downward, so that the base 931 can be placed more stably on the bearing surface. It is understandable that there are various structures for the connection handle 933 to be connected with the base 931 . The connection handle 933 may also be inserted into the receiving cylinder 9311 , or the connection handle 933 and the base 931 may be clamped and fixed.

The blowing device 93100 can be placed on a horizontal bearing surface through the base 931, or can be fixed on a vertical bearing surface such as a wall or a door. That is, the base 931 is placed on a horizontal bearing surface as a base, and can also be fixed on a vertical bearing surface as a fixed seat. When the base 931 is used as a fixing seat, it can be fixed on the wall by means of screws, glue or the like.

As shown in FIG. 31 , a suction cup 9310 may be provided on the base 931 . When the bearing surface is made of glass or ceramic tile, the base 931 can also be adsorbed to the bearing surface through the suction cup 9310 to increase the stability of the base 931 .

As shown in FIG. 32 , when the base 931 is used as a base, a counterweight 9313 is provided on the base 931 to make the base 931 more stably placed on the bearing surface.

The above embodiments are only used to illustrate the embodiments of the present specification and do not limit the technical solutions described in the embodiments of the present specification. The understanding of the embodiments of the present specification should be based on those skilled in the art. The embodiments of the specification have been described in detail, but those skilled in the art should understand that those skilled in the art can still make modifications or equivalent replacements to the embodiments of the specification without departing from the spirit and the embodiment of the specification. The technical solutions within the scope and improvements thereof shall all be covered within the scope of the claims of the embodiments of this specification.

Claims

A hand dryer, characterized in that it comprises:

case;

The air outlet duct assembly includes a first air outlet duct and a second air outlet duct, two ends of the first air outlet duct are respectively connected to the housing and the second air outlet duct, and the second air outlet duct is connected to the housing and the second air outlet duct respectively. An air outlet is provided on the air duct, and the second air outlet duct is rotatable relative to the first air outlet duct; and

heating equipment;

Wherein, the heating device and the second air outlet duct are arranged at intervals along the air outlet direction; or at least a part of the heating device is located in the second air outlet duct and the heating device and the second air outlet A gap is formed between the inner walls of the pipes.
The hand dryer of claim 1, wherein the heating device and the air outlet are at least partially staggered.
The hand dryer of claim 1, wherein the housing comprises a main housing and a steering housing, the steering housing is connected to a top sidewall of the main housing, and the steering housing An air outlet opening is formed at one end away from the main casing;

One end of the first air outlet duct is communicated with the air outlet opening, and the heating device and the air outlet opening are arranged at least partially staggered.
The hand dryer according to claim 1, wherein the heating device is connected to the first air outlet duct or the inner wall of the housing.
The hand dryer of claim 4, wherein the heating device comprises:

support plate; and

a heating assembly, connected to the support plate;

An airflow passage is formed between the heating assembly and the support plate, and the airflow passage communicates between the housing and the air outlet.
The hand dryer according to claim 5, wherein the heating assembly is wound around the support plate, and a gap is formed between the inner side of the heating assembly and at least one side of the support plate to form the support plate. airflow path.
The hand dryer according to claim 5, wherein the heating device further comprises a mounting plate, the support plate is mounted on the mounting plate, and the mounting plate is detachably connected to the first air outlet the inner wall of the pipe.
The hand dryer according to claim 7, wherein the second air outlet duct extends into the first air outlet duct toward the first end of the first air outlet duct and is opposite to the first air outlet duct. An air outlet duct is rotatable, the heating assembly and the support plate are located at the first end of the second air outlet duct, and the part of the mounting plate extending out of the first end of the first air outlet duct is detachable connected to the inner wall of the first air outlet duct.
The hand dryer of claim 7, wherein the number of the heating device and the air outlet duct assembly is at least two, and the mounting plates of the adjacent heating devices are connected;

The spaced regions of at least two of the heating assemblies at least partially overlap with the spaced regions of at least two of the air outlet duct assemblies.
The hand dryer according to claim 9, wherein the heating components of at least two of the heating devices are connected to a circuit in series.
A hand dryer, characterized in that it comprises:

case;

an air outlet duct assembly, the air outlet duct assembly is in communication with the casing, the air outlet duct assembly includes a connected rotating part and a static part, and the static part is connected to the rotating part and the casing between, the rotating part is provided with an air outlet and is rotatable relative to the stationary part; and

A heating device, the heating device is located in the air outlet duct assembly, and the heating device is arranged on the inner wall of the static part.
The hand dryer of claim 11, wherein the heating device and the air outlet are at least partially staggered.
The hand dryer of claim 11, wherein the housing comprises a main housing and a steering housing, the steering housing is connected to a top side wall of the main housing, and the steering housing An air outlet opening is formed at one end away from the main casing;

The air outlet duct assembly communicates with the air outlet opening, and the heating device and the air outlet opening are arranged at least partially staggered.
The hand dryer according to claim 11, wherein the stationary part comprises a first stationary part and a second stationary part that are connected to each other, the first stationary part is connected to the rotating part, and the first stationary part is connected to the rotating part. Two stationary parts are connected between the first stationary part and the housing;

The heating device is detachably connected to the inner wall of the first stationary part.
The hand dryer of claim 14, wherein the heating device comprises:

support plate; and

a heating assembly, connected to the support plate;

An airflow passage is formed between the heating assembly and the support plate, and the airflow passage communicates between the housing and the air outlet.
The hand dryer according to claim 15, wherein the heating assembly is wound around the support plate, and a gap is formed between the inner side of the heating assembly and at least one side of the support plate to form the support plate. airflow path.
The hand dryer according to claim 15, wherein the heating device further comprises a mounting plate, the support plate is mounted on the mounting plate, and the mounting plate is detachably connected to the inner wall of the stationary part .
18. The hand dryer of claim 17, wherein the first stationary portion extends into the second stationary portion, the heating assembly and the support plate are located in the first stationary portion, the The part of the mounting plate extending out of the first stationary part is detachably connected to the inner wall of the second stationary part.
The hand dryer according to claim 17, wherein the number of the heating device and the air outlet duct assembly is at least two, and the mounting plates of the adjacent heating devices are connected;

The spaced regions of at least two of the heating assemblies at least partially overlap with the spaced regions of at least two of the air outlet duct assemblies.
The hand dryer according to claim 19, wherein the heating components of at least two of the heating devices are connected to a circuit in series.
A hand dryer, characterized in that the hand dryer comprises:

air inlet channel;

a turning flow channel, the turning flow channel includes a main flow channel and a branch flow channel, the main flow channel is communicated with the air inlet flow channel, and the branch flow channel is connected to the air outlet of the hand dryer;

a heating device, the heating device is arranged in the turning flow channel, and the heating device is configured with a gas passage in the turning flow channel;

The outer casing includes a main engine casing and an air outlet casing, the air inlet channel is arranged in the main engine casing, the turning channel and the heating device are arranged in the air outlet casing, and the air outlet It is arranged on the air outlet casing.
The hand dryer according to claim 21, wherein the heating device extends from the main flow channel into the branch flow channel; the heating device comprises a heating bracket and a heater, and the heating bracket includes a main body part and an extension part, the main body part is located in the main flow channel, the extension part extends from the main body part into the branch flow channel, and the heater is arranged on the main body part and the extension part.
23. The hand dryer of claim 22, wherein the heater is disposed around the heating bracket.
The hand dryer of claim 22, wherein the heater comprises a heating wire, and the heating wire is wound around the outside of the heating bracket.
The hand dryer according to claim 22, wherein the heating bracket comprises a main body plate and a support plate, the main body plate extends along the extension direction of the branch flow channel, and at least a part of the support plate is formed from the support plate. The body plate extends toward the inner wall of the turning flow channel.
The hand dryer of claim 25, wherein the heating bracket comprises a support ring surrounding the body plate and the support plate, and the outer side of the support ring is supported on the inner wall of the diverting channel.
The hand dryer of claim 26, wherein the support ring is located at the end of the extension portion remote from the body portion.
The hand dryer of claim 25, wherein the body plate has a first groove extending along its length direction, the support plate has a second groove extending along its length direction, the first groove The second slot is inserted into each other so that the body plate is connected with the support plate.
The hand dryer of claim 21, wherein a temperature control device, the temperature control device is located in the diverting flow channel, the temperature control device is configured to be configured when the temperature in the diverting flow channel exceeds a preset value When the value is set, the temperature control device controls the heating device to stop heating.
The hand dryer according to any one of claims 21 to 29, wherein at least two branch flow channels are respectively extended in a direction away from the main flow channel, and the heating device faces from the main flow channel. Two of the branch flow channels extend within.
A heating device, characterized in that it comprises at least two heating parts arranged at intervals, each of the heating parts comprises a support plate and a heating assembly connected to the support plate;

The location where the heating components are located can be formed with air flow passages that communicate with the spaced regions of at least two of the heating components.
The heating device of claim 31, wherein the heating components in at least two of the heating components are connected to a circuit in series.
The heating device according to claim 31, wherein the heating element is wound on the support plate, and a gap is formed between the inner side of the heating element and at least one side of the support plate to form the airflow path.
The heating device according to claim 33, wherein a gap is formed between the inner side of the heating assembly and both sides of the support plate to form the airflow passage.
The heating device according to claim 33, wherein the heating element is wound around the outside of the support plate along the length direction of the support plate, so that the extending direction of the airflow passage is parallel to the length of the support plate. Longitudinal direction.
The heating device according to claim 31, wherein the heating component further comprises a mounting plate, the first ends of the mounting plates of the adjacent heating components are connected, and the support plate is provided on the mounting plate board and at the second end of the mounting board.
The heating device of claim 36, wherein the heating element further comprises a heat insulating element, and the outer cover of each of the heating assemblies is provided with the heat insulating element.
The heating device according to claim 37, wherein the support plate and the mounting plate are plugged together, so that the support plate extends from one side of the mounting plate to the other side of the mounting plate side;

The heat insulating element is a sleeve structure, the heat insulating element is sleeved on the second end of the mounting plate, and the heating assembly and the support plate are located inside the heat insulating element.
The heating device of claim 38, wherein a gap is formed between one end of the heating assembly close to the inner wall of the heat insulating element and the inner wall of the heat insulating element.
38. The heating device of claim 37, wherein the insulating element is made of mica.
The heating device according to any one of claims 31-40, wherein the heating component further comprises a protection device provided on the mounting plate, the protection device comprising a temperature sensor, a control element and a protection element;

Wherein, the temperature sensor is used to detect the temperature, and when it is detected that the temperature exceeds a threshold, generate a temperature signal and transmit the temperature signal to the control element, and the control element is used to act on the protection element to switch the heating assembly from an activated state to an inactive state.
The heating device according to claim 41, wherein the protection element is a temperature control switch or a fuse.
The heating device of claim 41, wherein the protection element is provided on the mounting plate;

Or, the mounting plate is provided with an accommodating groove, the bottom of the support plate is provided with an escape groove at a position corresponding to the accommodating groove, and at least a part of the protection element is provided in the accommodating groove , and the protection element is located in the space enclosed by the accommodating groove and the escape groove.
A heating device, characterized in that it comprises:

a mounting plate, the mounting plate is provided with a connection structure;

at least two support plates, at least two of the support plates are arranged on the mounting plate at intervals;

At least two heating assemblies are wound on at least two supporting plates in a one-to-one correspondence.
A hand dryer, characterized in that it comprises:

case;

at least two air outlet duct assemblies, the air outlet duct assemblies communicate with the housing, an air outlet is formed on the air outlet duct assemblies, and at least two of the air outlet duct assemblies are arranged at intervals; and

The heating device according to any one of claims 31-44, wherein the heating component is disposed adjacent to the corresponding air outlet duct assembly, and the heating component and the air outlet are at least partially staggered, and at least two of the The spaced area of the heating component is at least partially coincident with the spaced area of at least two of the air outlet duct assemblies;

Wherein, the airflow passage is communicated between the housing and the air outlet.
46. The hand dryer of claim 45, wherein the housing comprises a main housing and a steering housing, the steering housing is connected to a top side wall of the main housing, the steering housing An air outlet opening is formed at one end away from the main casing; at least two of the air outlet duct assemblies are respectively communicated with the air outlet opening, the heating component and the air outlet opening are at least partially staggered, and the airflow A passage is communicated between the air outlet and the air outlet opening; the heating assembly is located in the air outlet duct assembly.
The hand dryer of claim 45, wherein the heating assembly is completely staggered from the air outlet.
The hand dryer according to claim 46, wherein the hand dryer further comprises a connecting piece, the connecting piece is connected and communicated between the air outlet duct assembly and the air outlet opening, the The heating part is located in the accommodating cavity inside the connecting piece.
The hand dryer according to claim 48, wherein a gap is formed between the top of the heating member and the wall surface of the accommodating cavity.
A hand dryer air conditioning device, characterized in that the hand dryer air conditioning device comprises:

a fixed casing, the fixed casing has a first inner cavity;

A rotating casing, the rotating casing has a second inner cavity, the second inner cavity communicates with the first inner cavity through an air inlet opening, and the side wall of the rotating casing has a connection with the second inner cavity connected air outlet openings, the rotating casing is rotatably connected to the fixed casing, so that the direction of the air outlet opening can be adjusted;

A limit mechanism, the limit mechanism is configured to make the fixed housing and the rotating housing rotate within a predetermined angle range.
The air regulating device of a hand dryer according to claim 50, wherein the limiting mechanism comprises a limiting protrusion and a limiting groove, and one of the limiting protrusion and the limiting groove is provided on the The fixed casing and the other one are arranged on the rotating casing, and the limiting protrusion is movably arranged in the limiting groove,

Wherein, when the rotating casing rotates to a first angle relative to the fixed casing, the limiting protrusion abuts against the first inner wall of the limiting groove; when the rotating casing rotates relative to the fixed casing When the fixed housing rotates to the second angle, the limiting protrusion abuts against the second inner wall of the limiting groove.
The air conditioner for a hand dryer according to claim 51, wherein the rotating casing has an annular groove, the limiting protrusion is located in the annular groove, and the fixed casing has an annular groove corresponding to the annular groove. The annular protrusion is matched with the groove, and the limiting groove is opened on the annular protrusion.
The air conditioner for a hand dryer according to claim 52, wherein the length of the limiting groove along the arc surface is 10% to 80% of the entire circumference of the annular protrusion.
The air conditioner for a hand dryer according to claim 52, wherein the fixed housing comprises a first housing part and a second housing part that are fastened to each other, and the annular protrusion comprises a part located on the first housing part. A first protruding portion on a housing portion, and a second protruding portion on the second housing portion.
The air regulating device of a hand dryer according to claim 50, wherein the rotating casing comprises an outer casing of an air duct and an inner casing of the air duct, the inner casing of the air duct is fixedly arranged in the inner casing of the air duct, and the outlet The air opening is opened in the outer casing of the air duct, the side wall of the inner casing of the air duct is formed with an air outlet slot that communicates with the interior of the inner casing of the air duct, and the air outlet slot is adapted to the air outlet opening.
The air regulating device of a hand dryer according to claim 55, wherein a distance exists between the outer shell of the air duct and the inner shell of the air duct to form a thermal insulation layer.
The air regulating device of a hand dryer according to claim 56, wherein an annular wind baffle is arranged between the outer casing of the air duct and the inner casing of the air duct, and the annular baffle surrounds the air outlet of the air outlet. the outer periphery, and the annular wind deflector extends from the outer shell of the air duct to the inner shell of the air duct.
The air regulating device for a hand dryer according to any one of claims 50 to 57, wherein the fixed casing has an air outlet port, and the rotating casing is partially inserted into the air outlet through the air outlet port. inside the fixed housing.
The air regulating device of a hand dryer according to claim 58, wherein the fixed casing has an air outlet port that communicates with the first inner cavity, and the rotating casing is located in the fixed casing. A side part of the part is provided with an air inlet side opening, and the air inlet side opening faces the air inlet port.
The air regulating device of a hand dryer according to claim 59, wherein the fixed casing has a plurality of the air outlet ports, and each of the air outlet ports is provided with the rotating casing correspondingly.
A hand dryer, characterized in that it comprises the hand dryer air regulating device according to any one of claims 50-60.
A blowing device, characterized in that it comprises: a base, a blowing main body detachably arranged on the base;

The blowing main body comprises: a connecting handle, an air outlet duct rotatably connected with the connecting handle, and the air outlet duct is vertically connected or bent and connected with the connecting handle when it rotates to a preset angle; An air outlet is provided on the side wall of the air duct.
The blowing device according to claim 62, wherein the air outlet extends along the axial direction of the air outlet duct.
The blowing device according to claim 63, wherein a concave cavity extending along the axial direction of the air outlet duct is opened on the side wall of the air outlet duct, and the air outlet is opened at the side of the concave cavity. bottom.
The blowing device according to claim 64, wherein the side wall of the cavity is an inclined surface that is inclined and gathered toward the bottom of the cavity.
The blowing device of claim 64, wherein the air outlet comprises:

an inner cylinder, the inner cylinder is rotatably connected with the connecting handle, and the concave cavity is arranged on the side wall of the inner cylinder;

an outer cylinder, the outer cylinder is sleeved outside the inner cylinder, and the outer cylinder is provided with an opening, and the opening is oppositely arranged and communicated with the concave cavity;

A cavity cover, the cavity cover is embedded in the opening and covers the side wall of the cavity.
The blowing device according to claim 62, wherein the bottom end of the air outlet tube and the surface on which the top end of the connecting handle is located are located on the same chamfered plane, and the air outlet tube is wound around the connection handle relative to the connecting handle. The normal line of the chamfered surface rotates, and the bottom end of the air outlet at least partially overlaps the top end of the connecting handle.
The blowing device according to claim 67, wherein the bottom end of the air outlet has a first connecting piece, the top end of the connecting handle has a second connecting piece, and the first connecting piece is connected to the first connecting piece. The two connecting pieces are matched and rotatably connected.
The blowing device according to claim 68, wherein the first connecting member is a first support plate, and the first support plate has a first hollow area that communicates with the inside of the air outlet; the The second connecting piece is a second supporting plate, and the second supporting plate has a second hollow area that communicates with the inside of the connecting handle; wherein the first supporting plate and the second supporting plate are pin-connected , and parallel to the chamfered plane.
The blowing device according to claim 62, wherein a motor, an impeller driven by the motor and a circuit board electrically connected to the motor are accommodated in the connection handle; and the connection handle has a connection with the motor. the switch assembly electrically connected to the circuit board;

The connecting handle is provided with an air inlet, and the inner cavity of the connecting handle communicates with the inner cavity of the air outlet.
The blowing device according to claim 70, characterized in that, a heating element electrically connected to the circuit board is further accommodated in the connecting handle or the air outlet.
The blowing device according to claim 70, wherein the connecting handle is further provided with a filter member disposed opposite to the air inlet.
The blower device according to claim 70, wherein the blower body has a main control module electrically connected to the circuit board; an induction module electrically connected to the main control module is provided near the air outlet; The main control module is configured to receive a trigger signal of the induction module after the induction module is turned on, and to control the motor to turn on after receiving the trigger signal.
62. The blowing device according to claim 62, wherein the base has a receiving cylinder into which the connecting handle is inserted, and a support portion that expands and extends downward from the bottom end of the receiving cylinder.
The blowing device of claim 62, wherein the base is provided with a suction cup; or the base is a base, and a counterweight is provided on the base.