CN104251550B - Warm-air drier - Google Patents

Abstract

The invention discloses a warm air blower, comprising: the air outlet channel is formed in the shell, and an air outlet hole communicated with the air outlet channel is formed in the front part of the shell; the air outlet net is arranged at the front end of the air outlet channel and is provided with an air outlet; the heating device is arranged in the air outlet channel of the shell; and the backflow-preventing baffle is arranged above the heating device, the backflow-preventing baffle extends downwards from the top wall of the air outlet channel to form the backflow-preventing baffle, and the air outlet is positioned on the front side of the backflow-preventing baffle in the front-back direction. According to the warm air blower provided by the embodiment of the invention, the non-return baffle is arranged in the shell, so that when airflow at the air outlet of the warm air blower is blocked, hot air can flow out from the air outlet under the action of the non-return baffle, self-protection of the warm air blower in an abnormal working state is realized, and the use safety of the warm air blower is improved.

Description

heater

technical field

The invention relates to the technical field of home appliance preparation, and more specifically, relates to a heater.

Background technique

Horizontal heaters are very popular among consumers because of their low center of gravity, high stability, relatively small air outlet, and concentrated heat. However, it is precisely because of the relatively concentrated heat at the air outlet that when the airflow near the air outlet is obstructed by objects, the temperature on the surface of the object will rise sharply, and even cause a fire, causing huge losses to consumers' lives and property. .

Contents of the invention

The present invention aims to solve one of the above-mentioned technical problems at least to a certain extent.

Therefore, an object of the present invention is to provide a heater with simple structure and high safety.

The air heater according to the embodiment of the present invention includes: a housing, an air outlet channel is formed in the housing, and an air outlet hole communicating with the air outlet channel is provided at the front of the housing; an air outlet net, the The air outlet net is arranged at the front end of the air outlet channel and has an air outlet; a heating device is arranged in the air outlet channel of the housing; and a non-return flow baffle, the non-return flow baffle The plate is arranged above the heating device, and the non-return flow baffle is formed by extending downward from the top wall of the air outlet channel, wherein the air outlet hole is located on the front side of the non-return flow baffle in the front-rear direction.

According to the heater according to the embodiment of the present invention, by setting the non-return flow baffle in the casing, when the air flow at the air outlet of the heater is blocked, the hot air can flow out from the air outlet under the action of the non-return flow baffle, so as to realize the abnormal working state of the heater Under the self-protection, the use safety of the heater is improved.

In addition, the heater according to the embodiment of the present invention may also have the following additional technical features:

According to an embodiment of the present invention, the casing includes: a lower casing, wherein the heating device is arranged on the lower casing; and an upper casing, the upper casing is detachably connected to the lower casing, the The non-return flow baffle extends downward from the upper shell, and the air outlet is arranged on the upper shell and adjacent to the non-return flow baffle.

According to an embodiment of the present invention, it further includes a temperature limiter assembly and a thermostat assembly, the temperature limiter assembly is located in the air outlet channel and adjacent to the air outlet hole, the temperature limiter assembly is connected to the The temperature controller assembly is electrically connected, and the temperature controller assembly is used to control the power supply of the heater.

According to an embodiment of the present invention, the temperature limiter assembly includes: a mounting plate, a mounting portion is formed on the non-return flow baffle, and the mounting plate is installed in the mounting portion; and a temperature limiter, the The thermostat is installed on the outside of the mounting plate.

According to an embodiment of the present invention, the installation part is formed in an opening shape, the installation plate is plugged into the installation part, and the lower surface of the installation plate is flush with the lower surface of the non-return flow baffle.

According to an embodiment of the present invention, at least one wire fixing hole is formed on the mounting plate.

According to an embodiment of the present invention, a first guide vane and a second guide vane are provided on the outer side of the non-return flow baffle, and the first guide vane and the second guide vane jointly form a guide channel, so The inlet of the guide channel faces the heating device, the outlet of the guide channel faces the air outlet, the area of the inlet of the guide channel is larger than the outlet area, and the temperature limiter assembly is located at the in the flow channel.

According to an embodiment of the present invention, the first guide vane and the second guide vane are vertically connected to the non-return flow baffle, and the first guide vane and the second guide vane The orthographic projection on the bezel is formed as a figure-eight.

According to an embodiment of the present invention, the air outlet hole is located between the first guide vane and the second guide vane in the left-right direction.

According to an embodiment of the present invention, the air outlet holes are grid holes.

Additional aspects and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Description of drawings

The above and/or additional aspects and advantages of the present invention will become apparent and comprehensible from the description of the embodiments in conjunction with the following drawings, wherein:

1 is a schematic diagram of an exploded structure of a heater according to an embodiment of the present invention;

Fig. 2 is a partially enlarged schematic diagram according to A in Fig. 1;

Fig. 3 is a schematic diagram of an assembly structure of a heater according to an embodiment of the present invention;

Fig. 4 is a schematic diagram of a front exploded structure of a heater according to an embodiment of the present invention;

Fig. 5 is a schematic structural view of an upper casing of a heater according to an embodiment of the present invention;

Fig. 6 is a partially enlarged schematic diagram according to B in Fig. 5;

Reference signs:

10: shell; 11: air outlet channel; 12: air outlet; 13: upper shell; 14: lower shell;

20: air outlet net; 21: air outlet;

30: heating device;

40: Non-return flow baffle; 41: Installation part; 411: Slot; 412: Limiting part of the installation plate; 42: First guide vane; 421: Notched part; 43: Second guide vane;

50: motor; 51: wind blade;

60: thermostat assembly;

70: switch assembly;

80: temperature limiter assembly; 81: mounting plate; 811: wire fixing hole; 82: temperature limiter.

detailed description

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

In describing the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", The orientation or positional relationship indicated by "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the referred device or positional relationship. Elements must have certain orientations, be constructed and operate in certain orientations, and therefore should not be construed as limitations on the invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , or integrally connected; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

The heater according to the embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in FIGS. 1 to 6 , the heater according to the embodiment of the present invention includes: a housing 10 , an air outlet grid 20 , a heating device 30 and a non-return baffle 40 .

Specifically, an air outlet channel 11 is formed in the housing 10 , and an air outlet hole 12 communicating with the air outlet channel 11 is provided at the front of the housing 10 . The air outlet net 20 is arranged at the front end of the air outlet channel 11 and has an air outlet 21 . The heating device 30 is arranged in the air outlet channel 11 of the casing 10 .

The non-return baffle 40 is arranged above the heating device 30. The non-return baffle 40 extends downward from the top wall of the air outlet channel 11 and its lower end abuts against the upper surface of the heating device 30, wherein the air outlet 12 is located in the front and rear direction The front side of the non-return flow baffle 40 .

It should be noted that, in the embodiment of the present invention, the front part refers to the position where the housing 10 of the heater is adjacent to the air outlet net 20, and the rear part refers to the position where the housing 10 is far away from the air outlet net 20. The front-to-back direction is the front-to-back direction shown in Figure 1.

Therefore, according to the heater according to the embodiment of the present invention, by setting the non-return flow baffle 40 in the casing 10, when the airflow of the heater air outlet 21 is blocked, the hot air can flow through the air outlet under the action of the non-return flow baffle 40. 12 flow out, realize the self-protection of the heater under abnormal working condition, and improve the use safety of the heater.

It can be understood that the heater also includes a motor 50 , blades 51 and a switch assembly 70 . The motor 50 and the switch assembly 70 are installed in the housing 10, the switch assembly 70 can control the motor 50 to turn on and off, the fan blade 51 is installed on the motor 50, the motor 50 drives the fan blade 51 to rotate and generate air flow, so that the heating device 30 generates The heat is discharged from the air outlet 21 of the air outlet net 20 to achieve the heating effect.

There is no special limitation on the structure of the housing 10, and it may be a structure commonly used by those skilled in the art. Optionally, according to an embodiment of the present invention, the casing 10 includes: an upper casing 13 and a lower casing 14 . Wherein, the heating device 30 is arranged on the lower shell 14, the upper shell 13 is detachably connected to the lower shell 14, the non-return flow baffle 40 extends downward from the upper shell 13, and the air outlet 12 is arranged on the upper shell 13 and is adjacent to the stop. Backflow baffle 40. Therefore, the shell 10 with this structure is simple in structure, easy to manufacture, and facilitates the assembly of other structures in the shell 10 .

Further, according to an embodiment of the present invention, the heater further includes a temperature limiter assembly 80 and a thermostat assembly 60, the temperature limiter assembly 80 is located in the air outlet passage, and is adjacent to the air outlet hole 12, the temperature limiter assembly 80 is electrically connected to the thermostat assembly 60, and the thermostat assembly 60 is used to control the power supply of the heater.

Specifically, the temperature limiter assembly 80 includes: a mounting plate 81 and a temperature limiter 82 (as shown in FIG. 2 ). Wherein, a mounting portion 41 is formed on the non-return baffle 40 , a mounting plate 81 is mounted in the mounting portion 41 , and a temperature limiter 82 is mounted outside the mounting plate 81 . The temperature limiter assembly 80 is connected to the thermostat assembly 60 . The temperature limiter assembly 80 is arranged on the non-return flow baffle 40 , the temperature at the air hole 12 can be detected in time, and the detected temperature can be transmitted to the temperature controller assembly 60 . When the airflow at the air outlet 21 of the heater is blocked, the hot air will flow out from the air outlet 12, which will cause the temperature at the air outlet 12 to rise. When the temperature at the air outlet 12 rises to a certain range, the temperature limiter assembly 80 will detect The temperature is transmitted to the thermostat assembly 60 and controls the heater to cut off the power supply and stop running. In this way, self-protection in the abnormal working state of the heater can be realized and objects at the air outlet 21 of the heater can be prevented from being damaged by high temperature, thereby improving the use safety of the heater.

Considering that the function of the non-return baffle 40 is to block the backflow of hot air from the air outlet 21, its structure needs to have good airtightness. Correspondingly, the structure of the installation part 41 must not only meet the requirement of being able to install the temperature limiter assembly 80, but also Hot air can be prevented from passing through the assembly gap between the installation part 41 and the temperature limiter assembly 80 . Therefore, according to one embodiment of the present invention, the mounting portion 41 is formed in an open shape (as shown in FIGS. 2 and 6 ), the mounting plate 81 is plugged into the mounting portion 41 and the lower surface of the mounting plate 81 is connected to the non-return baffle. The lower surface of 40 is flush. In other words, slots 411 are formed on the non-return baffles 40 on the left and right sides of the mounting portion 41 , and the structure of the mounting plate 81 is adapted to the structure of the slots 411 and can be inserted into the slots 411 . Further, the upper end of the mounting portion 41 is provided with a mounting plate limiting portion 412 . Thus, the assembly of the temperature limiter assembly 80 on the mounting portion 41 can be realized, the mounting plate limiting portion 412 can facilitate the positioning of the mounting plate 81, and the lower surface of the mounting plate 81 and the lower surface of the non-return baffle 40 It is flush and can abut against the upper surface of the heating device 30 to effectively block the backflow of hot air from the air outlet 21 .

There is no special limitation on the assembly method of the temperature limiter 82 and the installation part 81 . According to an embodiment of the present invention, the temperature limiter 82 is vertically installed on the installation board 81 , and at least one wire fixing hole 811 is formed on the installation board 81 . The number of wire fixing holes 811 can be reasonably adjusted according to needs. Optionally, in a specific implementation of an embodiment of the present invention, there are two wire fixing holes 811, and the two wire fixing holes 811 are symmetrically arranged on the mounting plate 81 superior. Thus, while realizing the assembly of the temperature limiter assembly 80 , it is also possible to facilitate the wiring arrangement.

According to an embodiment of the present invention, a first guide vane 42 and a second guide vane 43 are provided on the outside of the non-return flow baffle 40, and the first guide vane 42 and the second guide vane 43 jointly form a guide channel, The inlet of the diversion channel faces the heating device 30 , the outlet of the diversion channel faces the air outlet 12 , the area of the inlet of the diversion channel is larger than the area of the outlet, and the temperature limiter assembly 80 is located in the diversion channel. In some specific embodiments of the present invention, the first guide vane 42 and the second guide vane 43 are vertically connected to the non-return flow baffle 40, and the first guide vane 42 and the second guide vane 43 The orthographic projection on the plate 40 is formed in a figure-eight shape. Further, the air outlet hole 12 is located between the first guide vane 42 and the second guide vane 43 in the left-right direction.

By setting the first guide vane 42 and the second guide vane 43 of this structure, when the airflow of the heater air outlet 21 is blocked, under the action of the non-return flow baffle 40, the first guide vane 42 and the second guide vane 42 will The leaves 43 gather the hot air, and a large amount of hot air is discharged from the air outlet 12 in the middle of the first guide vane 42 and the second guide vane 43, which will cause the temperature at the air outlet 12 to rise sharply. When the temperature rises to a certain range, the temperature limiter assembly 80 transmits the detected temperature to the temperature controller assembly 60 and controls the heater to cut off the power supply and stop running. As a result, the first guide vane 42 and the second guide vane 43 are equivalent to flow converging devices, which can discharge the reflowed hot air in a concentrated manner, and can increase the temperature at the air outlet 12 in a short time, greatly reducing the temperature limiter. The time for the component 80 to react enables the thermostat component 60 to quickly control the heater to cut off the power supply and stop running, further improving the use safety of the heater.

In order to adapt the structure of the first guide vane 42 and the second guide vane 43 to the overall structure of the heater, according to an embodiment of the present invention, the upper ends of the first guide vane 42 and the second guide vane 43 Notches 421 for installing the air outlet net 20 are formed respectively, and the notches 421 are formed in a rectangle or a trapezoid. In other words, the shape of the notch 421 can be reasonably adjusted according to the structure of the air outlet grid 20 . Thus, the cooperation between the first guide vane 42 and the second guide vane 43 and the air outlet net 20 can be realized.

There is no special limitation on the structure of the air outlet hole 12, which can be reasonably adjusted according to the power of the heater and the overall structure. Optionally, according to an embodiment of the present invention, the air outlet holes 12 are grid holes. Specifically, the number of grids of the air outlet holes 12 is at least one, preferably five. As a result, the air outlet hole 12 of this structure can quickly discharge the recirculated hot air, further improving the use safety of the heater.

In a word, according to the heater of the embodiment of the present invention, when the airflow of the heater outlet 21 is blocked, it can realize the self-protection under the abnormal working state of the heater and prevent the objects at the heater outlet 21 from being damaged by high temperature, which improves the The safety of using the heater.

Other components of the air heater according to the embodiment of the present invention, such as a thermostat assembly and a switch assembly, and operations are known to those skilled in the art, and will not be described in detail here.

In the description of this specification, descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structure, material or characteristic is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be construed as limitations to the present invention. Variations, modifications, substitutions, and modifications to the above-described embodiments are possible within the scope of the present invention.

Claims (9)

1. A heater, characterized in that, comprising: A housing, an air outlet channel is formed in the housing, and an air outlet hole communicating with the air outlet channel is provided at the front of the housing; An air outlet net, the air outlet net is arranged at the front end of the air outlet channel and has an air outlet; a heating device, the heating device is arranged in the air outlet channel of the housing; and A non-return flow baffle, the non-return flow baffle is arranged above the heating device, and the non-return flow baffle is formed by extending downward from the top wall of the air outlet channel, wherein the air outlet holes are located at On the front side of the non-return baffle, the housing includes: a lower case, wherein the heating device is provided on the lower case; and an upper shell, the upper shell is detachably connected to the lower shell, the non-return flow baffle extends downward from the upper shell, the air outlet is arranged on the upper shell and adjacent to the Non-return baffle. 2. The air heater according to claim 1, further comprising a temperature limiter assembly and a thermostat assembly, the temperature limiter assembly is located in the air outlet channel and adjacent to the air outlet hole, The temperature limiter assembly is electrically connected to the thermostat assembly, and the thermostat assembly is used to control the power supply of the heater. 3. The air heater according to claim 2, wherein the temperature limiter assembly comprises: a mounting plate, a mounting portion is formed on the non-return flow baffle, and the mounting plate is mounted in the mounting portion; and A temperature limiter, the temperature limiter is installed on the outside of the installation plate. 4. The air heater according to claim 3, wherein the installation part is formed in an opening shape, the installation plate is plugged into the installation part, and the lower surface of the installation plate is in contact with the non-return flow The lower surface of the baffle is flush. 5. The air heater according to claim 3, wherein at least one wire fixing hole is formed on the mounting plate. 6. The air heater according to any one of claims 2 to 5, characterized in that a first guide vane and a second guide vane are provided on the outer side of the non-return flow baffle, and the first guide vane The leaf and the second guide vane jointly form a guide channel, the inlet of the guide channel faces the heating device, the outlet of the guide channel faces the air outlet, and the area of the inlet of the guide channel is larger than The outlet area, the temperature limiter assembly is located in the flow guide channel. 7. The air heater according to claim 6, wherein the first guide vane and the second guide vane are vertically connected to the non-return flow baffle, and the first guide vane and the second guide vane The orthographic projection of the guide vane on the non-return flow baffle is formed in a figure-eight shape. 8 . The air heater according to claim 6 , wherein the air outlet hole is located between the first guide vane and the second guide vane in a left-right direction. 9 . 9. The air heater according to claim 1, wherein the air outlet holes are grid holes.