CN217357565U

CN217357565U - Warm-air drier

Info

Publication number: CN217357565U
Application number: CN202220563513.3U
Authority: CN
Inventors: 袁小辉; 孙朋飞; 侯竑宇; 戴伯昌; 汪鹏飞
Original assignee: Qingdao Haier Air Conditioner Gen Corp Ltd; Qingdao Haier Air Conditioning Electric Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Air Conditioner Gen Corp Ltd; Qingdao Haier Air Conditioning Electric Co Ltd; Haier Smart Home Co Ltd
Priority date: 2022-03-14
Filing date: 2022-03-14
Publication date: 2022-09-02
Anticipated expiration: 2032-03-14

Abstract

The utility model provides a fan heater relates to a fan heater for promote the concentrated output of fan heater combustion air flow, do benefit to the velocity of flow of increase exhaust air flow. Warm-air drier, including: the air conditioner comprises a shell, wherein a fan and a heating device are arranged in the shell, the shell is provided with an air inlet area and an air outlet area, and the air outlet area is positioned on the front side of the shell, which faces a user; the fan is used for conveying air entering from the air inlet to the heating device for heating, and is used for driving heated air to the air outlet to be discharged out of the fan heater; the air outlet area comprises: a plurality of air outlets distributed in a dot matrix manner; and at least part of the hole wall of the air outlet is obliquely arranged along the opposite direction along the direction facing the outside of the heater.

Description

Warm-air drier

Technical Field

The utility model relates to an air treatment technical field especially relates to a fan heater.

Background

With the development of society, the living standard of people is continuously improved, and more household appliances gradually enter the daily life of people. Wherein, the electric heater unit is as one kind of room heater, can heat the air through its electric heater unit, and then makes the wind that blows off be hot-blast to satisfy the demand for indoor heating alone.

In the related art, the fan heater includes an electric heating device disposed in the casing, and the electric heating device may include at least one of the following components: the fan heats heating elements such as electric heating wires, quartz tubes, ceramics, halogen tubes, heat conducting oil or carbon fibers and the like; the heat generated by the electric heating device can be discharged to the indoor through the air outlet hole on the shell so as to achieve the purpose of indoor heating. How to improve the air outlet effect of the fan heater is a problem to be solved urgently at present.

SUMMERY OF THE UTILITY MODEL

The utility model provides a fan heater for promote the concentrated output of fan heater combustion air current, do benefit to the velocity of flow that increases exhaust air current.

The utility model provides a fan heater, include: the air conditioner comprises a shell, wherein a fan and a heating device are arranged in the shell, the shell is provided with an air inlet area and an air outlet area, and the air outlet area is positioned on the front side of the shell facing a user; the fan is used for conveying air entering from the air inlet to the heating device for heating, and is used for driving heated air to the air outlet to be discharged out of the fan heater; the air-out area includes: a plurality of air outlets distributed in a dot matrix manner; and at least part of the hole walls of the air outlet holes are obliquely arranged along the opposite direction along the direction facing the outside of the warm air blower.

In one possible implementation manner, the air outlet hole is conical; the cross sectional area of one end of the air outlet hole facing the inside of the shell is larger than that of the other end of the air outlet hole. Therefore, the wall of the air outlet is integrally inclined, the concentrated output of the airflow discharged by the fan heater is facilitated, and the flow rate of the discharged airflow is increased.

In one possible implementation manner, a ratio of a cross-sectional area of one end of the air outlet, which faces the inside of the casing, to a cross-sectional area of the other end of the air outlet is greater than or equal to 1.2 and less than or equal to 1.6.

In one possible implementation manner, a ratio of a cross-sectional area of one end of the air outlet, which faces the inside of the casing, to a cross-sectional area of the other end of the air outlet is greater than or equal to 1.3 and less than or equal to 1.5.

In one possible implementation manner, an included angle between the hole wall of the air outlet and the central axis of the air outlet is greater than or equal to 15 degrees and less than or equal to 20 degrees. Therefore, the concentrated output of the air flow discharged by the fan heater is facilitated, the flow rate of the discharged air flow is increased, the strength of the air outlet area can be ensured, and the problem of deformation of the air outlet area is reduced or even avoided.

In one possible implementation manner, an included angle between the hole wall of the air outlet and the central axis of the air outlet is greater than or equal to 16 degrees and less than or equal to 18 degrees.

In one possible implementation manner, the cross section of at least part of the air outlet holes is rectangular; and a diagonal line of the cross section of the air outlet is arranged in parallel to the horizontal plane. Therefore, more air outlet holes are favorably arranged, and the air outlet area is favorably increased.

In one possible implementation manner, the front panel of the casing is provided with an inclined section; the inclined section is gradually inclined towards the inside of the shell along the direction from bottom to top; the air outlet area is positioned on the inclined section. Like this, do benefit to the weight of the bottom of increase fan heater, ensure the reliability that the fan heater was placed, still do benefit to the increase and set up more exhaust vents, increase the air-out area in air-out district.

In one possible implementation manner, an included angle between the inclined section and a longitudinal center line of the fan heater is greater than or equal to 5 degrees and smaller than or equal to 15 degrees.

In one possible implementation manner, the fan is located above the heating device, and the air outlet area is formed in an area of the casing corresponding to the air outlet end of the fan; the front panel comprises a first plate body and a second plate body, the first plate body is shielded on the front side of the fan, and the second plate body is shielded on the front side of the heating device; the inclined section is at least positioned on the first plate body.

The utility model provides a fan heater, include: the air conditioner comprises a shell, wherein a fan and a heating device are arranged in the shell, the shell is provided with an air inlet area and an air outlet area, and the air outlet area is positioned on the front side of the shell facing a user; the fan is used for conveying air entering from the air inlet to the heating device for heating, and is used for driving the heated air to the air outlet to be discharged out of the fan heater; the air-out area includes: a plurality of air outlets distributed in a dot matrix manner; and at least part of the hole wall of the air outlet is obliquely arranged along the opposite direction along the direction facing the outside of the heater. Like this, the pore wall of the exhaust vent of slope will guide the air current that flows to be close to the axis concentration of exhaust vent gradually to promote the concentrated output of electric fan heater combustion gas flow, do benefit to the velocity of flow that increases exhaust gas flow, do benefit to and make the space that electric fan heater was located can warm up fast, and do benefit to the energy saving.

Drawings

The following detailed description of the embodiments of the present invention is provided in conjunction with the accompanying drawings, and it is to be understood that the embodiments are described herein for the purpose of illustration and explanation and are not intended to limit the invention.

Fig. 1 is a schematic partial structure diagram of a warm air blower provided in an exemplary embodiment;

FIG. 2 is a schematic structural view of a front panel (as viewed from the outside of the fan heater into the fan heater) according to an exemplary embodiment;

FIG. 3 is a schematic view of a front panel (as viewed from the interior of the fan heater to the exterior of the fan heater) according to an exemplary embodiment;

FIG. 4 is a schematic view of an air-out section (as viewed from the interior of the fan heater to the exterior of the fan heater) provided in an exemplary embodiment;

FIG. 5 is a first schematic perspective view of a front panel according to an exemplary embodiment;

fig. 6 is a schematic perspective view illustrating a second exemplary embodiment of a front panel.

Description of reference numerals: 1. a front panel; 11. a first plate body; 111. an air outlet area; 111a and an air outlet; 12. a second plate body; 2. a fan; 3. an electric heating device.

Detailed Description

The following detailed description of the embodiments of the present invention is provided in conjunction with the accompanying drawings, and it is to be understood that the embodiments described herein are merely illustrative and explanatory of the present invention, and the present invention is not limited to the embodiments described below.

In the related art, the fan heater includes an electric heating device disposed in the casing, and the electric heating device may include at least one of: the fan heats heating elements such as electric heating wires, quartz tubes, ceramics, halogen tubes, heat conducting oil or carbon fibers and the like; the fan is used for providing driving force, so that heat generated by the electric heating device can be discharged to the indoor through the air outlet hole in the machine shell, and the purpose of indoor heating is achieved. How to improve the air outlet effect of the fan heater is a problem to be solved urgently at present. If the space where the fan heater is located can be quickly warmed by controlling the heating power of the electric heating device or controlling the operating power of the fan, the power consumption of the fan heater can be increased, and the energy is not saved.

In order to overcome above-mentioned problem, this embodiment provides a fan heater, sets up the exhaust vent to the slope form through setting up for the warm air current of getting rid of from the exhaust vent can be concentrated to the axis department of exhaust vent gradually, thereby promotes the concentrated output of fan heater exhaust air current, does benefit to the velocity of flow that increases exhaust air current, does benefit to and makes the space that the fan heater is located can warm up fast, and does benefit to the energy saving.

The structure, function and implementation process of the warm air blower provided by the embodiment will be described below by way of example with reference to the accompanying drawings. An arrow Z in fig. 1 is used for illustrating the upper part of the warm air blower, and the vertical direction of the warm air blower is the vertical direction of the warm air blower; arrow X is used to illustrate the front side of the fan heater.

Fig. 1 is a schematic partial structural view of a fan 2 according to an exemplary embodiment. Referring to fig. 1, the blower 2 provided in this embodiment includes: the casing, the casing is the insulating part. Illustratively, the chassis may include a front-viewing housing and a rear housing; the front shell comprises a front panel 1, and folded edges which are folded backwards are arranged on two opposite sides of the front panel 1; the rear shell comprises a rear guard plate, side plates which are folded forwards and extended are arranged on two opposite sides of the rear guard plate, and the side plates can be connected with the folded edges. A fan 2, an electric heating device 3, a main control device and the like can be arranged in a space enclosed by the front shell and the rear shell.

The front side of the casing facing the user, i.e. the front panel 1 of the casing, is provided with an air outlet area 111. The air outlet 111 may be located in a middle region and/or an upper region of the front side of the cabinet. The casing still is provided with the air inlet district, and the air inlet district can be located the front side or the rear side or left side or right side etc. of casing.

A flow guide channel for communicating the air inlet area with the air outlet area 111 is arranged in the shell. An electric heating device 3 is arranged in the inner space of the flow guide channel, and a fan 2 is also communicated with the flow guide channel. Wherein, the fan 2 can be located at the air inlet side of the electric heating device 3, or the fan 2 is located at the air outlet side of the electric heating device 3.

When the fan 2 works, the fan 2 and the heating device are started, the fan 2 sucks air from the air inlet area, the air flows through the heating device, the air is heated by the heating device, and then the air is discharged from the air outlet area 111 to blow out hot air, so that circular heating is realized.

Optionally, the air outlet area 111 may be symmetrically arranged with the air inlet area. Optionally, the air outlet area of the air outlet area 111 is 0.6-0.8 times of the air inlet area of the symmetrically arranged air inlet area, so that when the fan 2 in the diversion channel acts to generate airflow, the flow rate of the air outlet area 111 is faster than that of the air inlet area, and the concentrated output of heat flow generated by the fan 2 or airflow at normal temperature is facilitated.

Fan 2 includes micromotor, sets up the rotation axis at the micromotor output, installs the impeller seat in the water conservancy diversion passageway, and the rotation axis rotates the connection impeller seat, rotation axis pivoted sealing connection water conservancy diversion passageway, and an output of micromotor is connected with the encoder, encoder and master control equipment electric connection, and the encoder is used for feeding back the rotational speed change of rotation axis, can be used to reflect the corresponding velocity of flow state of 2 subassemblies of fan.

The main control unit is used for controlling the working state of the fan 2, such as heating temperature, working mode and the like. The operation modes may include: sleep mode, warm air mode, etc.; for example, in the sleep mode, the fan 2 is configured to start heating when the indoor temperature is lower than a first threshold, and configured to stop heating when the indoor temperature reaches a second threshold, where the first threshold is lower than the second threshold, and the fan 2 discharges warm air during the heating process. In the warm air mode, the fan 2 is used to continuously heat and discharge warm air, and makes the indoor temperature be within a preset temperature range. The main control unit may also be used to update the log record of the operation of the fan 2.

The electric heating device 3 is electrically connected to the power supply, and the electric heating device 3 responds to the control of the master control device to timely perform the heating work of the fan 2 through the circuit supply of the power supply.

In some examples, the electric heating device 3 may include: the PTC thermosensitive element or the electrothermal film element has rapid power-on response, convenient heating and uniform heat dissipation, and is beneficial to promoting the rapid heating of the fan 2.

In other examples, the electric heating device 3 includes: mica sheet and heating wire, mica sheet circumference distribute in the water conservancy diversion passageway, and the heating wire is even twined the setting and is in the both sides face of mica sheet, heats with the heating wire, and the mica sheet carries out even transfer heat and increase and the area of contact of air current, can improve heat exchange efficiency, heats under the heating state at fan 2, promotes the circulation of heat to fan 2 external environment in the water conservancy diversion passageway.

The fan 2 may further include a switch assembly for controlling the operation state of the electric heating device 3 and the micro-motor, such as on or off.

Exemplarily, the switch assembly may include a relay, a first switch tube and a second switch tube, the first switch tube and the second switch tube are field effect transistors, the relay is electrically connected to the main control device, the first switch tube is serially connected between the main control device and the electric heating device 3, the second switch tube is serially connected between the main control device and the micro-motor, and an electric field effect of the field effect transistor control input end is utilized to control an output end current so as to adjust a working voltage of a terminal component of the field effect transistor, and the response of the switch assembly is rapid, so as to effectively control a circuit loop.

The fan 2 further includes: and the temperature monitoring assembly is used for feeding back temperature monitoring data to the main control equipment, so that the main control equipment can adjust the working state of the fan 2 in time.

Illustratively, the temperature monitoring assembly includes a first temperature sensor for monitoring the temperature at the air-out zone 111 and a second temperature sensor for monitoring the ambient temperature, so as to facilitate improving the accuracy of the temperature regulation of the fan 2.

Fig. 2 is a schematic structural diagram of the front panel 1 (when viewed from the outside of the fan 2 to the inside of the fan 2) according to an exemplary embodiment; fig. 3 is a schematic structural diagram of the front panel 1 (when viewed from inside the fan 2 to outside the fan 2) according to an exemplary embodiment; fig. 4 is a schematic structural diagram of the air outlet region 111 (when viewed from the inside of the fan 2 to the outside of the fan 2) according to an exemplary embodiment; fig. 5 is a schematic perspective view of a front panel 1 according to an exemplary embodiment; fig. 6 is a schematic perspective view of a front panel 1 according to an exemplary embodiment.

Referring to fig. 2 to 6, the air outlet 111 of the housing includes: a plurality of air outlets 111a distributed in a dot matrix; wherein, along the direction towards the outside of the fan 2, the hole wall of the air outlet 111a is at least partially arranged along the opposite direction in an inclined way.

Optionally, the air outlet region 111 may be rectangular, circular or elliptical. Taking the rectangular air outlet region 111 as an example, the air outlet holes 111a are distributed in the rectangular region in a dot matrix manner. The air outlet 111a may be a circular hole or an elliptical hole or a polygonal hole.

Along the direction outside fan 2, that is along the air-out direction, the pore wall of exhaust vent 111a has at least partially along the direction slope that faces each other sets up to be favorable to promoting the concentrated output of the hot current that fan 2 produced or normal temperature's air current, and be favorable to increasing the velocity of flow of exhaust air current.

The fan 2 that this embodiment provided includes: the air conditioner comprises a shell, wherein a fan 2 and a heating device are arranged in the shell, the shell is provided with an air inlet area and an air outlet area 111, and the air outlet area 111 is positioned on the front side of the shell, which faces a user; the fan 2 is used for conveying air entering from the air inlet to the heating device for heating, and is used for driving the heated air to the air outlet to be discharged out of the fan 2; the air-out region 111 includes: a plurality of air outlets 111a distributed in a dot matrix; wherein, along the direction towards the outside of the fan 2, at least part of the hole walls of the air outlet holes 111a are obliquely arranged along the opposite direction. Like this, the pore wall of the exhaust vent 111a of slope will guide the air current that flows to be close to the axis of exhaust vent 111a gradually and concentrate to promote the output of concentrating of 2 combustion air currents of fan, do benefit to the velocity of flow that increases exhaust air current, do benefit to and make fan 2 place space can warm up fast, and do benefit to the energy saving.

In a possible embodiment, the outlet 111a is conical; the cross-sectional area of one end of the air outlet 111a facing the inside of the casing is larger than that of the other end of the air outlet 111a, so that the whole hole wall of the air outlet 111a is inclined, the concentrated output of the airflow discharged by the fan 2 is promoted, and the flow rate of the discharged airflow is increased.

Optionally, at least part of the air outlet holes 111a have a rectangular cross section, so as to increase the air outlet area; and a diagonal line of the cross section of the air-out hole 111a is arranged parallel to the horizontal plane. Of course, the cross section of the air outlet 111a relative to the edge of the air outlet region 111 may be a portion of a rectangle, such as a corner-cut rectangle or a triangle.

Or, the cross section of at least part of the air outlet holes 111a is in an isosceles triangle shape, and the top angle of the isosceles triangle shape faces downwards. Optionally, the cross section of a part of the air outlet holes 111a is in an isosceles triangle shape, and the vertex angle of the isosceles triangle shape faces downwards; the cross section of the other part of the air outlet holes 111a is in an isosceles triangle shape, the vertex angle of the isosceles triangle shape is upward, and the air outlet holes 111a with the upward vertex angles and the air outlet holes 111a with the downward vertex angles are arranged at intervals, so that the air outlet area is increased. Of course, the cross section of the air outlet 111a relative to the edge of the air outlet zone 111 may be a part of an isosceles triangle.

Or, at least part of the air outlet holes 111a have an oval cross section, and the minor axis of the cross section of the air outlet holes 111a is parallel to the horizontal plane. Of course, the cross section of the air outlet 111a relative to the edge of the air outlet zone 111 may be a part of an ellipse.

It can be understood that: the shape of the air outlet 111 is not limited to the above, and this embodiment is only an example. The shape of the air outlet 111a is not limited to the above, and this embodiment is only an example.

Optionally, a ratio of a cross-sectional area of one end of the air outlet 111a facing the inside of the housing to a cross-sectional area of the other end of the air outlet 111a is greater than or equal to 1.2 and less than or equal to 1.6.

Specifically, the ratio of the cross-sectional area of one end of the air outlet 111a facing the inside of the housing to the cross-sectional area of the other end of the air outlet 111a may be 1.2, 1.3, 1.4, 1.5, or 1.6, or a value between any two of the above. Therefore, the concentrated output of the air flow discharged by the fan 2 is facilitated, the flow speed of the discharged air flow is increased, the strength of the air outlet area 111 can be ensured, and the problem of deformation of the air outlet area 111 is reduced or even avoided.

Optionally, a ratio of a cross-sectional area of one end of the air outlet 111a facing the inside of the housing to a cross-sectional area of the other end of the air outlet 111a is greater than or equal to 1.3 and less than or equal to 1.5.

For example, the ratio of the cross-sectional area of the outlet 111a at one end facing the inside of the cabinet to the cross-sectional area of the other end of the outlet 111a may be 1.3, 1.35, 1.4, 1.45, 1.5, or any two of them. Therefore, the concentrated output of the air flow discharged by the fan 2 is facilitated, the flow speed of the discharged air flow is increased, the strength of the air outlet area 111 can be ensured, and the problem of deformation of the air outlet area 111 is reduced or even avoided.

In a possible embodiment, an included angle between the wall of the air outlet 111a and the central axis of the air outlet 111a is greater than or equal to 15 ° and less than or equal to 20 °.

Specifically, an included angle between the wall of the air outlet 111a and the central axis of the air outlet 111a may be 15 °, 16 °, 17 °, 18 °, 19 °, 20 °, or a value between any two of the above. Therefore, the concentrated output of the air flow discharged by the fan 2 is facilitated, the flow speed of the discharged air flow is increased, the strength of the air outlet area 111 can be ensured, and the problem of deformation of the air outlet area 111 is reduced or even avoided.

Optionally, an included angle between the hole wall of the air outlet 111a and the central axis of the air outlet 111a is greater than or equal to 16 ° and less than or equal to 18 °.

Specifically, an included angle between the wall of the air outlet 111a and the central axis of the air outlet 111a may be 16 °, 16.5 °, 17 °, 17.5 °, 18 °, or a numerical value between any two of the above. Therefore, the concentrated output of the air flow discharged by the fan 2 is facilitated, the flow speed of the discharged air flow is increased, the strength of the air outlet area 111 can be ensured, and the problem of deformation of the air outlet area 111 is reduced or even avoided.

In a possible embodiment, the front panel 1 of the cabinet has an inclined section; the inclined section is gradually inclined towards the inside of the shell along the direction from bottom to top; the air outlet zone 111 is located in the inclined section. Therefore, the reliability of placing the air heater is ensured, and the air outlet area of the air outlet area 111 is increased.

Optionally, an included angle between the inclined section and the longitudinal centerline of the fan 2 is greater than or equal to 5 ° and less than or equal to 15 °.

Specifically, an included angle between the wall of the air outlet 111a and the central axis of the air outlet 111a may be 5 ° or 6 ° or 7 ° or 8 ° or 9 ° or 10 ° or 11 ° or 12 ° or 13 ° or 14 ° or 15 °, or a value between any two of the above. Like this, do benefit to the weight of the bottom of increase fan heater, ensure the reliability that the fan heater was placed, still do benefit to the increase and set up more exhaust vents 111a, increase exhaust area of exhaust area 111.

Optionally, an air outlet area 111 is formed in an area of the casing corresponding to the air outlet end of the fan 2; the front panel 1 comprises a first plate body 11 and a second plate body 12, the first plate body 11 is shielded on the front side of the fan 2, and the second plate body 12 is shielded on the front side of the heating device; the inclined section is located at least at the first plate body 11. Like this, do benefit to the weight of the bottom of increase fan heater, ensure the reliability that the fan heater was placed, still do benefit to the increase and set up more exhaust vents 111a, increase exhaust area of exhaust area 111.

In some examples, the inclined section is located in the middle and/or upper portion of the first plate body 11; alternatively, the first plate body 11 is entirely inclined, that is, the first plate body 11 is entirely an inclined section. In other examples, the inclined section may also be located in a partial region of the second board body 12, such as an upper portion of the second board body 12; alternatively, the second plate 12 may be inclined as a whole, that is, the front panel 1 may be inclined as a whole.

Furthermore, a protective heat insulating plate may be provided between the electric heating device 3 and the cabinet. In some examples, a protective heat insulation plate is disposed between the front panel 1 of the cabinet and the electric heating device 3 to prevent the heat of the electric heating device 3 from being transferred to the cabinet to scald a user. Wherein the protective and insulating panel may be made of an insulating and heat-insulating material.

It should be noted that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, a first feature "on" or "under" a second feature may be directly contacting the second feature or the first and second features may be indirectly contacting the second feature through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description above, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A fan heater, characterized by, comprising: the air conditioner comprises a shell, wherein a fan and a heating device are arranged in the shell, the shell is provided with an air inlet area and an air outlet area, and the air outlet area is positioned on the front side of the shell facing a user; the fan is used for conveying air entering from the air inlet to the heating device for heating, and is used for driving heated air to the air outlet to be discharged out of the fan heater;

the air outlet area comprises: a plurality of air outlets distributed in a dot matrix manner; and at least part of the hole wall of the air outlet hole is obliquely arranged along the opposite direction along the direction facing the outside of the warm air blower.

2. The fan heater according to claim 1, wherein the air outlet is tapered; the cross sectional area of one end of the air outlet hole facing the inside of the shell is larger than that of the other end of the air outlet hole.

3. The warm-air drier according to claim 2, wherein the ratio of the cross-sectional area of one end of the air outlet facing the inside of the casing to the cross-sectional area of the other end of the air outlet is greater than or equal to 1.2 and less than or equal to 1.6.

4. The warm-air drier according to claim 3, wherein the ratio of the cross-sectional area of one end of the air outlet facing the inside of the casing to the cross-sectional area of the other end of the air outlet is greater than or equal to 1.3 and less than or equal to 1.5.

5. The warm-air drier according to claim 1, wherein an included angle between the wall of the air outlet and the central axis of the air outlet is greater than or equal to 15 ° and less than or equal to 20 °.

6. The warm-air drier according to claim 5, wherein the angle between the wall of the air outlet and the central axis of the air outlet is greater than or equal to 16 ° and less than or equal to 18 °.

7. The fan heater according to claim 1, wherein the cross section of at least some of the air outlet holes is rectangular; and a diagonal line of the cross section of the air outlet is arranged in parallel to the horizontal plane.

8. The fan heater according to claim 1, wherein the front panel of the casing has an inclined section; along the direction from bottom to top, the inclined section is gradually inclined towards the inside of the shell; the air outlet area is positioned on the inclined section.

9. The fan heater according to claim 8, wherein the angle between the inclined section and the longitudinal centerline of the fan heater is greater than or equal to 5 ° and less than or equal to 15 °.

10. The warm-air drier according to claim 8, wherein the fan is located above the heating device, and the air outlet area is formed in the area of the casing corresponding to the air outlet end of the fan;

the front panel comprises a first plate body and a second plate body, the first plate body is shielded on the front side of the fan, and the second plate body is shielded on the front side of the heating device; the inclined section is at least positioned on the first plate body.