CN111365840A

CN111365840A - Warm air device and control system and method thereof

Info

Publication number: CN111365840A
Application number: CN202010261616.XA
Authority: CN
Inventors: 方义飞
Original assignee: Changsha Xianzheng Yixiang Machinery Technology Co ltd
Current assignee: Changsha Xianzheng Yixiang Machinery Technology Co ltd
Priority date: 2020-04-04
Filing date: 2020-04-04
Publication date: 2020-07-03

Abstract

The invention provides a warm air device which comprises an air inlet grid, a fan assembly, an electric flame assembly, an air outlet grid and a controller, wherein the fan assembly and the electric flame assembly are arranged inside the air inlet grid and the air outlet grid, the controller is connected with the fan assembly and the electric flame assembly, the electric flame assembly comprises at least one electric flame nozzle, and an included angle between the spraying direction of the electric flame nozzle and the air flow direction at the nozzle of the electric flame nozzle is smaller than or equal to 90 degrees. Because the air can be mixed with the electric flame sprayed by the electric flame nozzle, formaldehyde, benzene and other volatile organic compounds in the air are oxidized, and microorganisms such as bacteria, viruses and the like in the air are also killed in a large amount, so that the warm air device integrates the functions of formaldehyde, benzene and the like, sterilization, disinfection and the like in addition to the heating function, and the formaldehyde removing efficiency is greatly improved by more than one time compared with the conventional catalytic oxidation, so that the air device is very suitable for being used in winter and spring. In addition, a corresponding control system and method of the heating device are also provided.

Description

Warm air device and control system and method thereof

Technical Field

The application relates to the technical field of household appliances, in particular to a heating device and a control system and method thereof.

Background

The heater is a device for emitting hot wind into air, which can rapidly increase the indoor temperature and reach a desired temperature by forcibly circulating and heating the air. However, the heater unit has a relatively single function and is not suitable for use. Similar problems exist with a heating apparatus as described in chinese patent application publication No. CN 107543318A.

Disclosure of Invention

Therefore, the technical problem that this application will be solved lies in providing the more warm braw device of a function, makes the warm braw device not only can provide the warm braw, still has the function of removing poisonous and harmful gas such as formaldehyde, benzene.

Certain embodiments commensurate in scope with the claimed invention are summarized below. These embodiments are not intended to limit the scope of the claimed invention, but rather, they are intended only to provide a brief summary of possible forms of the corresponding invention. Indeed, the claimed invention may encompass a variety of forms that may be similar to or different from the embodiments described below.

First aspect provides a pair of warm braw device, including air inlet grid and fan unit spare, electric flame subassembly, play wind grid, controller, wherein, fan unit spare with electric flame subassembly sets up the air inlet grid with go out inside the wind grid, the controller with fan unit spare the electric flame subassembly is connected, the electric flame subassembly includes at least one electric flame nozzle, and the contained angle between the jet direction of this electric flame nozzle and the air current direction of the spout department of this electric flame nozzle is less than or equal to 90 degrees.

Preferably, an included angle between the spraying direction of the electric flame nozzle and the air flow direction at the nozzle of the electric flame nozzle is less than or equal to 60 degrees. Further, 30 degrees or less.

Preferably, the spraying direction of the electric flame nozzle is parallel to or perpendicular to the air flow direction at the nozzle of the electric flame nozzle.

Preferably, the electric flame nozzle is arranged between the fan and the air outlet in a swinging mode, and the swinging angle is limited within 10 degrees.

Preferably, the number of the electric flame nozzles is 2 or 3, 4, 5, 6, 7, 8.

Preferably, the air outlet grid is coated with a catalyst for decomposing ozone and/or an adsorbent for adsorbing nitrogen oxides, and the adsorbent is a molecular sieve or activated carbon, zeolite, heteropoly acid, silica gel, peat containing NH3, and a combination thereof.

Preferably, the air inlet side of the air outlet grid is provided with an adsorbent for adsorbing nitrogen oxides, the air outlet side of the air outlet grid is coated with a catalyst for decomposing ozone, and the adsorbent is a molecular sieve or activated carbon, zeolite, heteropolyacid, silica gel, peat containing NH3, and a combination thereof.

Preferably, the molecular sieve is a 3A (potassium a) type molecular sieve or a 4A (sodium a) type molecular sieve, a 5A (calcium a) type molecular sieve, a 10X (calcium X) type molecular sieve, a 13X (sodium X) type molecular sieve, a Y (sodium Y, calcium Y) type molecular sieve, a MOR type molecular sieve, and combinations thereof.

Preferably, a flame baffle plate or a flame rod for blocking the electric flame to make the cross-sectional area swept by the electric flame in the air duct enlarged is provided in the air flow passage behind the electric flame nozzle, or the air flow passage behind the electric flame nozzle is zigzag-shaped to make the electric flame mix more with the air of the air flow passage.

Preferably, the method further comprises the following steps:

the first air volume sensor is arranged on the inner side of the air outlet grid and used for detecting first air volume passing through the air outlet grid and transmitting the first air volume to the controller;

the second air volume sensor is arranged on the inner side of the air inlet grid and used for detecting second air volume passing through the air inlet grid and transmitting the second air volume to the controller;

the first temperature sensor is arranged on the inner side of the air outlet grid and used for detecting a first temperature passing through the air outlet grid and transmitting the first temperature to the controller;

the second temperature sensor is arranged at the electric flame nozzle and used for detecting a second temperature at the electric flame nozzle and transmitting the second temperature to the controller;

the analog/digital conversion module is respectively connected with the controller, the first air volume sensor and the second air volume sensor, and is used for converting the detected first air volume analog signal, the detected second air volume analog signal, the detected first temperature analog signal and the detected second temperature analog signal into digital signals and transmitting the digital signals to the controller;

the display module is connected with the controller and is used for displaying the air quantity of the air outlet grid and the air inlet grid and the temperature of the air outlet grid and the electric flame nozzle;

the power supply module is respectively connected with the controller, the analog/digital conversion module and the electric flame assembly and is used for providing working voltage;

the relay is connected with the controller and used for controlling the on/off of the power supply module and the electric flame assembly connecting circuit;

the controller is connected with the first air quantity sensor, the second air quantity sensor, the first temperature sensor and the second temperature sensor and is used for controlling the working state of the electric flame assembly according to the received first air quantity and/or the received second air quantity, the received first temperature or the received second temperature.

In a second aspect, there is provided a method for controlling a heater unit according to any one of the above aspects, the method including:

acquiring a first air volume of an air outlet grid and/or a second air volume of an air inlet grid; controlling the working state of the electric flame assembly according to the first air quantity of the air outlet grid and/or the second air quantity of the air inlet grid;

or acquiring a first temperature of the air outlet grid or a second temperature at the electric flame nozzle; and controlling the working state of the electric flame assembly according to the first temperature of the air outlet grid or the second temperature of the electric flame nozzle.

Preferably, the step of controlling the operating state of the flame assembly according to the first air volume of the air outlet grid or the second air volume of the air inlet grid comprises:

judging whether the first air volume of the air outlet grid is smaller than a first preset air volume limit value, wherein the first preset air volume limit value is smaller than the maximum air volume of the air outlet grid of the fan assembly at a preset working gear; when the first air volume is smaller than the first preset air volume limit value, controlling the electric flame assembly to stop working;

judging whether a second air volume of the air inlet grid is smaller than a second preset air volume limit value, wherein the second preset air volume limit value is smaller than the maximum air volume of the air inlet grid under a preset working gear of the fan assembly; when the second air volume is smaller than the second preset air volume limit value, controlling the electric flame assembly to stop working;

wherein the step of controlling the electric flame assembly to stop working comprises: and controlling the electric flame assembly to be disconnected with the power supply module.

Preferably, the step of controlling the operation of the electric flame assembly according to the first temperature of the air outlet grid or the second temperature of the electric flame nozzle comprises:

judging whether the first temperature of the air outlet grid is greater than a first preset temperature limit value or not, and controlling the electric flame assembly to stop working when the first temperature is greater than the first preset temperature limit value;

judging whether a second temperature at the electric flame nozzle is greater than a second preset temperature limit value or not, and controlling the electric flame assembly to stop working when the second temperature is greater than the second temperature limit value;

and when the first temperature is detected to be lower than a first preset temperature limit value and the second temperature is detected to be lower than a second preset temperature limit value, starting the electric flame assembly.

Preferably, the step of controlling the operating state of the flame assembly according to the first air volume of the air outlet grid and the second air volume of the air inlet grid comprises:

judging whether the difference value of the second air volume of the air inlet grid and the first air volume of the air outlet grid is larger than a third preset air volume limit value or not;

and when the difference value between the second air volume of the air inlet grid and the first air volume of the air outlet grid is larger than the third preset air volume limit value, controlling the electric flame assembly to stop working.

When detecting that the first air volume of the air outlet grid is not smaller than the first preset air volume limit value, starting the electric flame assembly; or when detecting that the second air volume of the air inlet grid is not less than the second preset air volume limit value, starting the electric flame assembly; or when the difference value of the second air volume of the air inlet grid and the first air volume of the air outlet grid is not larger than a third preset air volume limit value, starting the electric flame assembly.

In a third aspect, a control system for a heater unit is provided, including:

at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor to cause the at least one processor to execute the method for controlling a heater unit as described above.

Against the background described above, the advantageous effects of the present invention are substantially as follows.

1. The utility model relates to a warm braw device, includes air inlet grid and fan unit spare, electric flame subassembly, goes out wind grid, controller, wherein, fan unit spare with the electric flame subassembly sets up the air inlet grid with go out inside the wind grid, the controller with fan unit spare the electric flame subassembly is connected, the electric flame subassembly includes at least one electric flame nozzle, and the contained angle between the jet direction of this electric flame nozzle and the air current direction of the nozzle department of this electric flame nozzle is less than or equal to 90 degrees. Because the air can be mixed with the electric flame sprayed by the electric flame nozzle, formaldehyde, benzene and other volatile organic compounds in the air are oxidized, and microorganisms such as bacteria, viruses and the like in the air are also killed in a large amount, so that the warm air device integrates the functions of formaldehyde, benzene and the like, sterilization, disinfection and the like in addition to the heating function, and the formaldehyde removing efficiency is greatly improved by more than one time compared with the conventional catalytic oxidation, so that the air device is very suitable for being used in winter and spring.

2. The control system and the method of the warm air device relate to, delay starting of the electric flame assembly and delay closing of the fan; or the working state of the electric flame assembly is controlled according to the air quantity at the electric flame nozzle; and controlling the working state of the fan according to the temperature at the electric flame nozzle. The electric flame nozzle in the air purifier has the advantages that the electric flame of the electric flame nozzle in the air purifier cannot be fixed and burnt at a certain position for a long time to cause severe temperature rise, and accidents can be effectively prevented.

The objects, features and aspects of the various claimed inventions can be applied together or independently in any combination. Not all objects or features may be required to be combined in each claim.

Drawings

In order to illustrate the embodiments of the claimed invention or the technical solutions in the prior art more clearly, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of some of the inventions, and that other drawings can be obtained by those skilled in the art without inventive effort.

Fig. 1 is a schematic perspective view of an alternative embodiment of an air purifier provided in the present application.

Fig. 2 is a schematic cross-sectional view of the air purifier of fig. 1.

Fig. 3 is a schematic perspective view of an alternative embodiment of a housing of the air purifier of fig. 1 and 2.

Fig. 4 is a perspective view of an alternative embodiment of the rear cover plate of fig. 1 and 2.

Fig. 5 is a schematic perspective view of an alternative embodiment of an air purifier provided herein.

Fig. 6 is a schematic cross-sectional view of the air purifier of fig. 5.

Fig. 7 is a perspective view of an alternative embodiment of the dirt extraction assembly of fig. 5 and 6.

Fig. 8 is an enlarged partial view of fig. 6 and illustrates an alternative embodiment.

FIG. 9 is a schematic side view of an alternative embodiment of the adsorbent device of FIG. 8.

Detailed Description

In order that those skilled in the art will better understand the technical solutions involved in the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings and specific examples. It should be noted that, in a non-conflicting manner, the embodiments and the specific features described in the embodiments in the present application may be combined in any suitable manner; in order to avoid unnecessary repetition, various possible combinations are not described in the present application, and should be considered as disclosed in the present application as long as they do not depart from the gist of the invention.

Referring to fig. 1 to 4, fig. 1 is a schematic perspective view of an alternative embodiment of an air purifier provided in the present application; FIG. 2 is a schematic cross-sectional view of the air purifier of FIG. 1 (the arrows in FIG. 2 indicate the general direction of air flow); FIG. 3 is a schematic perspective view of an alternative embodiment of a housing of the air purifier of FIGS. 1 and 2; fig. 4 is a perspective view of an alternative embodiment of the rear cover plate of fig. 1 and 2.

In one specific embodiment, as shown in fig. 1 to 3, there is provided an air cleaner including a housing 10 and a fan 20, a dust removing assembly 30, and an electric flame assembly 40. The shell 10 is provided with an air inlet 11 and an air outlet 12, the fan 20 is positioned between the air inlet 11 and the air outlet 12, the dust removal assembly 30 and the electric flame assembly 40 are arranged in the shell 10, the dust removal assembly 30 is positioned between the air inlet 11 and the fan 20, the electric flame assembly 40 comprises at least one electric flame nozzle 41, and the electric flame nozzle 41 is positioned between the fan 20 and the air outlet 12.

As shown in fig. 2, the jet direction of the torch nozzle 41 is parallel to the direction of the gas flow at the nozzle opening of the torch nozzle 41 (the arrow in the figure indicates the approximate direction of the gas flow). In addition, the spraying direction of the electric flame nozzle 41 can be perpendicular to the air flow direction, and can also be intersected, namely, the included angle between the spraying direction of the electric flame nozzle 41 and the air flow direction at the nozzle of the electric flame nozzle 41 is less than or equal to 90 degrees. Of course, the included angle between the jet direction of the electric flame nozzle 41 and the gas flow direction at the nozzle of the electric flame nozzle 41 may be larger than 90 degrees and smaller than or equal to 180 degrees; of course, this upwind flame is not generally preferred because it does not control the size, shape and degree of mixing with air.

In use, air passes through the air inlet 11, the dust removing assembly 30, the fan 20, the electric flame assembly 40 in sequence and then is blown out from the air outlet 12, it should be emphasized that "passing through in sequence" does not mean that only the air inlet 11, the dust removing assembly 30, the fan 20, the electric flame assembly 40 and the air outlet 12 are passed through, but any two adjacent air inlets, air outlets, and any other suitable parts or structures may be inserted between the two air inlets, the air inlets and the air outlets, such as adding a protective net or a noise reduction device before the air inlet 11, arranging a protective net or an adsorption net after the air outlet 12, arranging a noise reduction device before the air inlet 11 or after the air outlet 12, adding a noise reduction device between the electric. Because the air after being dedusted by the dedusting component 30 is mixed with the electric flame sprayed by the electric flame nozzle 41, formaldehyde, benzene and other volatile organic compounds in the air are oxidized, and bacteria, viruses and other microorganisms in the air are also killed in a large quantity, so that the air purifier integrates the functions of heating, removing formaldehyde, benzene and the like, sterilizing and disinfecting and the like in addition to the dedusting function. Is very suitable for use in winter and spring; especially indoors, has good effect on blocking the transmission of various viruses (such as coronavirus and the like).

Moreover, according to the regulation of GB/T18801-. And the mode of mixing by adopting 'electric flame' directly 'burns off' formaldehyde, benzene and other volatile organic compounds in the waste gas to generate carbon dioxide and water, the larger the contact area is or the more sufficient the mixing is, the more complete the 'burning' (namely, the higher the formaldehyde removal efficiency is, 100% can be difficult), and the formaldehyde removal efficiency is greatly improved by more than one time compared with the conventional catalytic oxidation or adsorption and the like. The formaldehyde removal efficiency is greatly improved.

In a preferred embodiment, as shown in fig. 2, an air duct 15 with a small hole is formed in the air flow path between the fan 20 and the air outlet 12, the electric flame nozzle 41 is disposed in the air duct 15, and the electric flame sprayed from the electric flame nozzle 41 is just in the air duct 15, so that the air flowing through the air duct 15 can be more contacted or mixed with the "flame" sprayed from the electric flame nozzle 41, thereby enhancing the formaldehyde, benzene, etc. removing and sterilizing abilities of the air purifier. In fig. 2, the direction of the wind in the wind tunnel 15 (indicated generally by the arrow in the wind tunnel 15 in fig. 2) is about 60 degrees with respect to the horizontal plane, may be 45 degrees, may be horizontal or vertical, and may be any angle of 90 degrees or less with respect to the horizontal plane.

In an alternative embodiment, as shown in fig. 2 and 3, the duct 15 is formed to include a front wall 151 and a rear wall 152, and left and right side walls 153. As shown in FIG. 2, the torch nozzle 41 is provided on the rear wall 152, and the rear wall 152 is provided with a nozzle mounting hole 154 for mounting the torch nozzle 41. In fig. 2, the rear wall 152 is at an angle of about 60 degrees relative to the horizontal, and the space outside the rear wall 152 may be used for cabling or flame control, as well as other components as desired. In addition, in an embodiment not shown, the torch nozzles 41 may also be disposed on the front wall 151 with the nozzle mounting holes 154 correspondingly located on the front wall 151. The air duct 15 may not be provided between the fan 20 and the outlet 12, and the flame nozzle 41 may be provided at a portion having a small cross-sectional area between the fan 20 and the outlet 12.

In an alternative embodiment, shown with reference to FIG. 2, the airflow is drawn in from one side and blown out from the other side. A baffle 14 is arranged in the shell 10, the baffle 14 is positioned at the lower part in front of the fan 20, the rotation center line of the fan 20 is in the horizontal direction, the lower part behind the fan 20 is correspondingly used as the air supply direction, and the air enters the air duct 15, passes through the air duct 15 obliquely upwards and then is blown out from the air outlet 12; the baffle 14 may be integral or assembled. Of course, the air duct 15 may be replaced by another one, and the air duct 15 may be disposed at the upper portion (the corresponding baffle 14 is also located at the upper portion), and in this case, the air duct 15 is preferably in a horizontal direction. In addition, the rotation center line of the fan 20 may also be vertical, and at this time, the fan 20 discharges the air above the fan 20 downwards to the inlet of the air duct 15, which may refer to various prior arts, and the air supply modes of the fans in the various prior arts are various and are not described herein again.

In a preferred embodiment, as shown in FIG. 2, the angle between the direction of the jet of the torch nozzle 41 and the direction of the gas flow at the nozzle of the torch nozzle 41 is 60 degrees or less. Further, 30 degrees or less. Preferably, the spraying direction of the electric flame nozzle 41 is parallel or perpendicular to the air flow direction at the nozzle of the electric flame nozzle 41.

In an alternative embodiment, as shown in fig. 2 and 3, the electric flame assembly 40 includes 3 (2 nozzle mounting holes 154 are illustrated in fig. 3, and 3 are reasonably assumed from fig. 2 and 3) electric flame nozzles 41 uniformly distributed in the air duct 15, but may include 2 or 4, 5, 6, 7, 8 electric flame nozzles 41, or more electric flame nozzles according to the actual power requirement. The electric flame nozzles 41 may be arranged in regular rows or columns in the air duct 15, for example, 3 electric flame nozzles 41 in fig. 2 may be arranged in a horizontal straight line, or may be arranged in an irregular manner, as long as the "flame" sprayed therefrom can be mixed with the air in the air flow passage between the fan 20 and the air outlet 12, so as to achieve the functions of heating, removing formaldehyde, benzene, etc., and sterilizing.

In an alternative embodiment, not shown, the torch nozzle 41 is arranged to be oscillatable within an angle limited to 10 degrees. A part, arranged to be able to oscillate, which feature may be of conventional construction in various mechanical devices, for example by designing the torch nozzle 41: a rod part pivoted on the rear wall 152 of the air duct 15, one side of the rod part is propped by a spring, and the other side of the rod part is propped by a rotatable cam, and the rotation of the cam can lead the rod part to swing in a reciprocating way, namely the electric flame nozzle 41 can swing; in another example, a swing rod is disposed at the tail of the electric flame nozzle 41, and the swing rod is limited in a cylindrical hole on a turntable, and the axis of the cylindrical hole is parallel to the rotation axis of the turntable. In addition, other various prior arts (especially various mechanical devices having various structures capable of performing the function) may also be referred to, and details are not repeated in this application.

As shown in fig. 2, the dust removing assembly 30 is a dust removing filter net installed in the housing 10 at a side adjacent to the air inlet 11. The housing 10 has a mounting hole for mounting the dust removing filter (besides, the common prior art is not described herein), the cover plate 13 can be used to define the position of the dust removing filter (press the frame thereof), and meanwhile, the cover plate 13 has vent holes regularly arranged, which form the air inlet 11, that is, the air inlet 11 is disposed on the cover plate 13. In addition, the ventilation holes of the cover plate 13 forming the air inlet 11 may also be irregularly arranged. The general structure of the outlet 12 is shown in fig. 1 and 3, where the outlet 12 has regularly arranged small ventilation holes, and the inlet 11 may also have such a structure, but the number and the arrangement area may be generally larger, which can effectively reduce the noise.

In a preferred embodiment, not illustrated in the drawings, and as shown in fig. 2, the dust extraction assembly 30 may also be composed of two screens, a first coarse screen and a second high efficiency screen, the air flow passing through the coarse and high efficiency screens in sequence. The service life of the high-efficiency filter screen can be prolonged properly under the condition, because a large amount of coarse particles are filtered by the coarse filter screen in advance, three or more layers of filter screens can be arranged, and the specific arrangement of the layers can be set according to actual requirements. Wherein, the high-efficiency filter screen can adopt a HEPA filter screen or an ULPA filter screen. In addition, the filter screen for dust removal can also be replaced by an electrostatic dust removal component, a plurality of air purifiers adopting electrostatic dust removal are also provided in the market at present, the electrostatic dust removal component is also a relatively mature technology, and in the air purifier, the connection relationship between the electrostatic dust removal component and the air inlet in the front part and the fan in the rear part is not too close, and the implementation can be relatively independent, so that the filter screen for dust removal is not repeated in the application and only needs to refer to the related prior art.

In addition to the above embodiments, there may be various other embodiments, please refer to fig. 5 to 9, and fig. 5 is a schematic perspective view of an alternative embodiment of an air purifier provided in the present application; FIG. 6 is a schematic cross-sectional view of the air purifier of FIG. 5; FIG. 7 is a schematic perspective view of an alternative embodiment of the dirt extraction assembly of FIGS. 5 and 6; FIG. 8 is an enlarged, fragmentary view of FIG. 6 and illustrates an alternative embodiment; FIG. 9 is a schematic side view of an alternative embodiment of the adsorbent device of FIG. 8.

In yet another embodiment, as shown in fig. 5 and 6, an air purifier is provided, in which the housing 10 has a vertical cylindrical shape, and fig. 6 shows a square shape, or alternatively, a circular cylindrical shape or other various suitable shapes. As shown in fig. 5 and 6, the air inlet 11 is located at the lower part of the housing 10, the air outlet 12 is located at the upper part of the housing, in the figure, two air inlets 11 are arranged oppositely, two air outlets 12 are also arranged oppositely, and the air inlets 11 and the air outlets 12 are not located on the same surface, which is beneficial to improving the efficiency of mixing the purified air with the indoor air; in addition, only one air inlet 11 may be provided, and only one air outlet 12 may be provided. As shown in fig. 5 and 6, the dust removing assembly 30 is located above the air inlet 11, the fan 20 is located above the dust removing assembly 30, and the electric flame nozzle 41 of the electric flame assembly 40 is located above the fan 20. That is, the housing 10 is provided with the air inlet 11 and the air outlet 12, the fan 20 is located between the air inlet 11 and the air outlet 12, the dust removing assembly 30 is located between the air inlet 11 and the fan 20, and the electric flame nozzle 41 is located between the fan 20 and the air outlet 12. The number of the electric flame nozzles 41 may be 1, 2, 3 or more.

In a preferred embodiment, as shown in fig. 6, an air duct 15 is formed in the air flow passage between the fan 20 and the air outlet 12, the air duct 15 is formed by a left guide wall 154 and a right guide wall 155, so that the air flow passage above the fan 20 is gradually reduced, the electric flame nozzle 41 is arranged in the air duct 15, the electric flame sprayed from the electric flame nozzle 41 is located at a narrower position in the air duct 15, and the higher the mixing degree of the flowing air flow and the electric flame, the better the effect of removing formaldehyde, benzene and bacteria and viruses is.

In an alternative embodiment, as shown in FIG. 6, the torch nozzle 41 is mounted to a mounting block 42, and the mounting block 42 is fixedly or removably disposed within the housing 10. In addition, various prior arts can be adopted for installing the electric flame nozzle 41, for example, refer to the prior arts such as CN 108662625 a or CN 108758723A, CN 108662626A, CN 110360605A, CN 107314397A, which are not described in detail herein; in addition, in the related art electric flame cookers or electric heating devices, some of them need to be adjusted to be high (i.e. thin) to concentrate heat on a heated pot, etc., while in the present application, the electric flame only needs to be kept "short and large" (i.e. need not be adjusted to be thin and long). All other components for supporting the torch nozzle 41 except the torch nozzle 41 can be referred to the aforementioned prior art and other various prior arts (including common knowledge), and will not be described in detail in this application.

In an alternative embodiment, as shown in fig. 5 to 7, the dust removing assembly 30 is composed of a frame part 31 and a screen part 32, one side surface of the frame part 31 is flush with the outer wall of the housing 10, and 2 screw holes 33 are provided on the side surface, and the dust removing assembly 30 can be drawn out by screwing a threaded disassembling tool into the screw holes 33, so as to be convenient for replacement. The frame portion 31 also has a stop 34 on the side having the threaded hole 33, and the stop 34 is mainly used for positioning to prevent the dust removing assembly 30 from being inserted too deeply or damaged when inserted into the corresponding hole of the housing 10. In addition, the upper and/or lower portion of the frame portion 31 is provided with a ring of sealing rubber strips or the like (various prior arts) for preventing air introduced from the inlet port 11 from directly reaching the blower 20 without passing through the screen portion 32. It can be seen that the dust removing assembly 30 may also be partially located outside the housing 10, as long as it can filter the air entering from the air inlet 11.

In a preferred embodiment, as shown in fig. 5 and 6, a wind guiding assembly 50 is disposed at the wind outlet 12, and the wind guiding assembly 50 is used for controlling the wind outlet direction. In addition, the wind guide assembly 50 may be arranged to have an adjustable blowing angle. In addition, the specific structure of the air outlet can also adopt the air outlet structure presented in chinese patent application publication No. CN 104197427 a or CN 110094867A, CN 109341037A, CN 109253508A, CN 110513790A, CN 110420506A, CN 110404357A, CN 109373474A, CN 108534259A, CN 106345198A, CN 104121634 a, and other various known prior art and various suitable air outlets in the future. The specific structure of the adjustable blowing angle can also adopt an adjustable air outlet structure such as that presented in the Chinese invention patent application publication No. CN 108626812A, and can refer to an adjustable air outlet of an air conditioner indoor unit in daily life, and the adjustable air outlet structure has the functions of swinging air up and down and swinging air left and right, and can also adopt other known prior arts and various suitable adjustable air outlet structures in the future.

In a preferred embodiment, the medium of the electric flame assembly 40 is air or water vapor (or water vapor), and air is generally used as the medium, so that the structure is simple. When the water vapor (or water vapor) is used, a device for supplying the water vapor (or water vapor) is added, and the water vapor (or water vapor) is delivered to the corresponding position inside the electric flame nozzle 41, and the air is directly delivered to the corresponding position inside the electric flame nozzle 41. In this embodiment, this section may refer to the corresponding prior art or to the aforementioned patent documents. In addition, when the water vapor (or steam) is used as a medium, although a device for supplying the water vapor (or steam) is required, the water vapor is discharged by the air purifier, which is equivalent to humidification of the indoor space, and the air purifier is suitable for a dry area in winter, so that the air purifier integrates the functions of humidification, heating, formaldehyde, benzene and the like, sterilization and disinfection and the like.

In an alternative embodiment, referring to fig. 6, the air guide assembly 50 is coated with a catalyst for decomposing ozone based on the possible problem of generating ozone and/or nitrogen oxides of the "electric flame". The ozone decomposition catalyst can be MnOz catalyst, partial oxide ozone decomposition catalyst using high molecular material as carrier, silver-containing hammer and copper oxide mixture catalyst, catalyst composed of Mn02 and MnCOA, paper-like manganese-containing ozone decomposition catalyst, etc.

In a preferred embodiment, based on the problem of ozone and/or nitrogen oxide generation that may exist in the "electric flame", as shown in fig. 6 and 8, a detachable adsorption device 60 is disposed at the air outlet 12, and the adsorption device 60 is provided with an adsorbent for adsorbing nitrogen oxide, wherein the adsorbent is molecular sieve or activated carbon, zeolite, heteropoly acid, silica gel, peat containing NH3, and combinations thereof. Preferably, the molecular sieve is a 3A (potassium a) type molecular sieve or a 4A (sodium a) type molecular sieve, a 5A (calcium a) type molecular sieve, a 10X (calcium X) type molecular sieve, a 13X (sodium X) type molecular sieve, a Y (sodium Y, calcium Y) type molecular sieve, a MOR type molecular sieve, and combinations thereof. Preferably, the adsorption device 60 has a catalyst on the air-out side for decomposing ozone. Among these, molecular sieves are mainly synthesized, and zeolites are natural (and generally natural).

In an alternative embodiment, as shown in fig. 8 and 9, the adsorption means 60 includes a plurality of hollow bars 62, and the plurality of hollow bars 62 are bound by a binding portion 61 to be integrally formed, and the circular holes of the hollow bars and the clearance holes between the hollow bars constitute an air passage; namely a ventilation channel formed by combining circular holes and clearance holes formed by bundling hollow rods. Alternatively, the adsorbent device 60 may be a honeycomb duct (e.g., honeycomb briquette style) or a matrix duct, a spiral duct, an adsorbent mesh or grid array, or in any case, a duct having a large surface area.

It should be noted that, under certain conventional conditions, air density is 1.293kg/m, and specific heat capacity is 1030J/(kg. ℃), for example, air output of air purifier is 400 m/h, power of electric flame assembly is 1KW, and air outlet temperature of air purifier is 3600000/(400 x 1.293 x 1030) ≈ 6.96 ℃ higher than air inlet temperature. If the heating power of the electric flame assembly is calculated according to 2KW and the hourly air output of the air purifier is calculated according to 600m, the air outlet temperature of the air purifier is about 7200000/(600 × 1.293 × 1030) ≈ 9.28 ℃ higher than the air inlet temperature. Then, the following steps are described: the air is not heated by the electric flame component of the air purifier to a high degree, and although the temperature of the electric flame can reach a high degree, the air at the electric flame nozzle flows rapidly, so that the temperature of the air can be kept at a low level, and the probability of generating nitrogen oxides is lower when the temperature is low. For example, a lighter flame may not be able to burn on it for a long time, but fingers may quickly slide over the flame of the lighter, or quickly move the lighter to slide over the fingers without any wear, and the fluff may be burned. In addition, the shape of the flame is also generally adjusted to be "short and large" rather than "lean and long", so that the temperature of the air and flame mixture in the device is not too high; of course, without other constraints, it is possible to adjust the flame to be "lean and long", and the high velocity air flowing through the flame nozzle 41 can also lengthen the flame to appear longer. I.e., where tuning is reasonable (or where new technology is added in the future), the potential for the production of nitrogen oxides and ozone may be made extremely low, without the need for the adsorption unit 60 and a catalyst for decomposing ozone.

Although nitrogen oxides and ozone can be generated, the efficiency is very high and is improved by times compared with the efficiency of treating formaldehyde, benzene and other volatile organic compounds in a chamber. The beneficial effect is more remarkable than that of the generated less harmful substances, and the generated harmful substances can be eliminated by adopting a corresponding adsorption device and the like. Secondly, as the user, the efficiency of removing formaldehyde (formaldehyde is easy to cause leukemia and the like) is higher, and the cost of using some adsorption devices (wearing parts or consumables) for adsorbing nitrogen oxides is lower, and the cost performance is higher.

In a preferred embodiment, as shown in fig. 6, a flame shield 70 is provided in the air flow path after the electric flame nozzle 41, and the flame shield 70 is used to block the electric flame to enlarge the cross-sectional area swept by the electric flame in the air duct. Of course, this structure also has a function of preventing the temperature of the flame tip from being excessively high, so that the length or height of the region behind the flame nozzle 41 for preventing local overheating can be appropriately shortened to be small, contributing to space saving. As shown in fig. 8, the flame barrier 70 may be formed in a V-shape. In addition, in an embodiment not shown, the lower portion of the flame baffle 70 is also provided with regular or irregular protrusions, which enable the electric flame to be mixed with the air more uniformly. Alternatively, in an embodiment not shown, the flame guard 70 may be replaced by one or more flame guards, and the arrangement of the flame guards may be substantially aligned with the flame guard 70, such as aligned with the length of the flame guard 70 in fig. 6 and 8. In addition, the air flow passage behind the electric flame nozzle 41 may be arranged in a zigzag shape, and the electric flame may fly in the zigzag passage with the air flow, so that the electric flame may be mixed with the air in the air flow passage more effectively.

In an alternative embodiment, as shown in fig. 1 to 4, the housing 10 has a back hole 16, the back plate 18 is mounted on the back hole 16, a step surface 162 is provided on the periphery of the back hole 16, a threaded hole 161 is provided on the upper portion of the back hole 16, the back plate 18 has a boss 182, the protruding portion of the boss 182 is engaged with the inner portion of the back hole 16, the non-protruding portion of the back plate 18 is engaged with the step surface 162, the upper portion of the back plate 18 has a hole 181, and a set screw is screwed into the threaded hole 161 after passing through the hole 181. As shown in fig. 1 and 2, and fig. 4, the bottom of the back plate 18 has a bayonet 183, the bayonet 183 on the back plate 18 is matched with a plate at the lower part of the step surface 162 to clamp the plate in the groove of the bayonet 183, the lower part is clamped, the upper part is screwed by a set screw, and the back plate is convenient to disassemble, so that the back plate is convenient to maintain.

In an alternative embodiment, as shown in fig. 1 to 3, the housing 10 further has a panel hole 17, the panel hole 17 is used for installing the control system 80, the control system 80 can be a control panel (a panel with buttons) by exposing the control system 80, and the lower portion of the panel hole 17 has a notch 171 for the arrangement of the wires. As shown in fig. 2, the cable duct 19 is provided along the notch 171, and the cable duct 19 turns to extend horizontally to the rear wall 152 from the bottom to penetrate through the rear wall 152, so that the cable can reach the rear part of the rear wall 152 conveniently and be routed conveniently. In addition, the control system 80 includes a wireless transmitting and receiving module, which is remotely controlled by a remote controller.

In a specific embodiment, there is provided a control method of an air purifier, the air purifier provided in any one of the above embodiments, the control method including: the method comprises the steps of starting the flame assembly in a delayed manner for a first preset time when the air purifier is started, stopping the air purifier in a suspended manner or in a delayed manner for a second preset time when the air purifier is stopped, wherein the first preset time is 10-500 seconds, and the second preset time is 30-500 seconds. For example, the air purifier is started, and the flame assembly is started after the delay of 100 seconds (or any value of 10-500 seconds); and the blower is turned off after delaying 200 seconds (or any value of 30-500 seconds) when the air purifier is paused or stopped.

In a specific embodiment, there is provided a control method of an air purifier, the air purifier provided in any one of the above embodiments, the control method including: after the air purifier is started, acquiring a first air volume at the electric flame nozzle 41 and/or a second air volume at the air outlet 12, and controlling the working state of the electric flame assembly according to the first air volume at the electric flame nozzle 41 and/or the second air volume at the air outlet 12; and pausing or stopping the air purifier, acquiring a first temperature at the electric flame nozzle 41 and/or a second temperature at the air outlet 12, and controlling the working state of the fan according to the first temperature at the electric flame nozzle 41 and/or the second temperature at the air outlet 12. Wherein, generally, a temperature sensor (i.e. a first temperature sensor is disposed at the electric flame nozzle 41, and a second temperature sensor is disposed at the air outlet 12) can be used to obtain or detect the temperature at a certain location, and the obtaining of a specific temperature value at a certain location by using a temperature sensor belongs to the prior art, and even can be a known technology, which is easily known by those skilled in the art, and therefore, no further description is provided in this application; in addition, generally, an air volume sensor (i.e., a first air volume sensor is disposed at the electric flame nozzle 41, and a second air volume sensor is disposed at the air outlet 12) may be used to obtain or detect the air volume at a certain location, and the method for obtaining the specific air volume value at a certain location by using the air volume sensor belongs to the prior art, and may even be a known technique, which is easily known by those skilled in the art, and therefore, the description thereof is omitted in this application.

For example, after the air purifier is started, if the first air quantity at the electric flame nozzle 41 and/or the second air quantity at the air outlet 12 are detected to reach or exceed a rated value (a value in normal use, such as a rated air speed of 1 meter per second), the electric flame assembly 40 is started (electric flame is generated), and if the first air quantity and/or the second air quantity are not reached, the electric flame assembly 40 is not started (electric flame is not generated); and when the operation of the air purifier is suspended or stopped, detecting the first temperature at the electric flame nozzle 41 and/or the second temperature at the air outlet 12, if the temperature is still higher than 80 ℃, controlling the fan 20 to continue to operate, if the temperature is still higher than 70 ℃, controlling the fan 20 to continue to operate, and if the temperature is lower than 60 ℃, controlling the fan 20 to stop operating. Of course, the critical temperature may be set to 61 degrees, 62 degrees, 63 degrees, 64 degrees, 65 degrees, 59 degrees, 69 degrees, 75 degrees, or the like, and the operation of the fan 20 may be controlled to continue above the critical temperature and to stop below the critical temperature. Of course, controlling the operating state of the fan 20 may also include intermittently operating the fan 20, for example, setting the critical temperature to 65 degrees, controlling the fan 20 to operate continuously when the temperature is detected to be 80 degrees, and controlling the fan 20 to operate intermittently when the temperature is detected to be 70 degrees, until the fan 20 stops operating when the temperature is detected to be lower than 65 degrees. The critical temperatures of the first temperature and the second temperature may be different from each other, for example, the critical temperature of the torch nozzle 41 may be 65 degrees and the critical temperature of the outlet 12 may be 60 degrees.

In a particular embodiment, there is provided a method of purifying air, the method comprising the steps of: and forming an air duct comprising at least one air inlet and at least one air outlet, so that air enters from the air inlet and is dedusted by the electrostatic dedusting device or at least one dedusting filter screen, and the dedusted air is mixed by flame and then blown out from the air outlet. In a preferred embodiment, the method further comprises the step of blowing the air after the electric flame mixing out of the air outlet after the air passes through the adsorption device with the nitrogen oxide adsorbent. In addition, a decomposition device having an ozone decomposition catalyst (e.g., a mesh coated with an ozone decomposition catalyst) may be provided after the adsorption device having the nitrogen oxide adsorbent.

In addition, a further improvement can be made on the basis of any one of the above embodiments, a module for detecting the service life of the consumable is added in the control system of the air purifier or the air purification method, whether the service life of the filter screen of the dust removal device is up and/or whether the service life of the adsorption device is up is detected, a prompt (such as remaining 10% of the remaining service life) is sent before the service life of the consumable is close to the service life, and a warning (or a buzzer and the like) or forced shutdown is sent when the service life of the consumable is up.

In addition, in order to improve the safety, a high temperature early warning module is further arranged in the control system, and detects the temperature at the electric flame nozzle 41, the pointed position of the electric flame tail of the electric flame nozzle 41, and the temperature at the air outlet 12, for example, when the temperature at the air outlet 12 exceeds 100 degrees, or 90 degrees, 88 degrees, 85 degrees, 80 degrees, 75 degrees, 70 degrees, 69 degrees, 67 degrees, 63 degrees and the like, the operation of the electric flame assembly 40 is suspended, and the fan 20 still operates, so that the temperature in the air purifier is ensured to be at a lower level. In addition, the temperature of the flame baffle plate 70 may be detected, and of course, the temperature of the flame baffle plate 70 may be higher, and the two ends of the flame baffle plate 70 may be made of a material with better high temperature resistance and thermal insulation performance (such as rock wool board or perlite, corundum mullite brick, lightweight high alumina brick, lightweight clay brick, alumina hollow ball castable, etc.) to isolate the flame baffle plate 70 from the housing 10 or other components, so as to prevent the damage of the excessively high temperature of the flame baffle plate 70 to other components. In addition, one side of the flame shielding plate 70, which is opposite to the electric flame, may be further provided with some commonly used heat dissipation structures, which refer to the commonly used prior art and are not further described.

In an alternative embodiment, the dust removing assembly 30 of the air purifier is eliminated, so that the air purifier forms a heater. After the dust removing component 30 is removed, the air inlet 11 is defined as/set as an air inlet grid, the air outlet 12 is defined as/set as an air outlet grid, and the fan 20 can be understood as a fan component, that is, a heating device comprising the air inlet grid, the fan component, an electric flame component, an air outlet grid and a controller is formed, wherein the fan component and the electric flame component are arranged inside the air inlet grid and the air outlet grid, the controller is connected with the fan component and the electric flame component, the electric flame component comprises at least one electric flame nozzle, and an included angle between the injection direction of the electric flame nozzle and the air flow direction at the nozzle of the electric flame nozzle is smaller than or equal to 90 degrees. In addition, reference may also be made to a heater described in chinese patent application publication No. CN 107543318A, and an alternative embodiment of the heater provided in this application is formed by replacing the heating component with an electric flame component.

In an alternative embodiment, the air purifier described with reference to any one of the foregoing embodiments and fig. 1 to 9 thereof, with the dust removing assembly 30 removed therefrom, or a heater described in chinese patent application publication No. CN 107543318A with the heating assembly replaced by an electric flame assembly, or a combination thereof, the heater further comprises:

and the relay is connected with the controller and used for controlling the on/off of the power supply module and the electric flame assembly connecting circuit.

The controller is connected with the first air quantity sensor, the second air quantity sensor, the first temperature sensor and the second temperature sensor and is used for controlling the working state of the electric flame assembly according to the received first air quantity and/or second air quantity, first temperature or second temperature. In addition, only one of the first air volume sensor and the second air volume sensor may be provided, and the controller may control the operating state of the flame assembly 40 according to the provided air volume sensor. Therefore, the temperature inside the heater unit can be accurately and timely measured, and the problem that components inside the heater unit are burnt out is avoided.

In a preferred embodiment, there is provided a control method of a heating apparatus, the control method including:

In the specific implementation manner of "controlling the operating state of the electric flame assembly according to the first air volume of the air outlet grill and/or the second air volume of the air inlet grill", please refer to the description of the corresponding part in the specific embodiment of chinese patent application publication No. CN 107543318A, specifically the contents from paragraph 71 to paragraph 107 or the contents of other paragraphs in the specification thereof, and replace the heating assembly therein with the electric flame assembly in the present application, so that the description in the present application is not repeated (the described contents should be regarded as the prior art described in the present application, and should be regarded as a part of the contents described in the present application, and the description is not repeated for saving).

In a preferred embodiment, the controlling the operating state of the electric flame assembly according to the first temperature of the air outlet grid includes: firstly, judging whether a first temperature of the air outlet grid is greater than a first preset temperature limit value, wherein the first preset temperature limit value is smaller than the highest temperature which can be borne by equipment and does not generate adverse factors such as burning or fire, for example, the highest temperature is 100 ℃, and taking the first preset temperature as 60 degrees (or 65 degrees, 58 degrees and the like) by taking the first preset temperature as a standard; secondly, when the first temperature is detected to be 60 degrees (or 65 degrees, 58 degrees and the like) higher than the first preset temperature, the electric flame assembly is controlled to stop working.

In a preferred embodiment, said controlling the operating condition of the electric flame assembly based on the second temperature at the electric flame nozzle comprises: firstly, judging whether a second temperature at the electric flame nozzle is greater than a second preset temperature limit value, wherein the second preset temperature limit value is less than the highest temperature which can be borne by equipment and does not generate adverse factors such as burning out or fire, for example, the highest temperature is 1000 ℃ (the highest temperature which can be borne by the electric flame nozzle is certainly higher than that at the air outlet), and the second preset temperature is 650 ℃ (or 620 ℃ or 660 ℃ and the like); secondly, when the second temperature is detected to be higher than the second preset temperature of 650 degrees (or 620 degrees, 660 degrees and the like), the electric flame assembly is controlled to stop working.

The step of controlling the electric flame assembly to stop working comprises the following steps: and the electric flame assembly is controlled to be disconnected with the power supply module. The power supply of the electric flame assembly is cut off in time, the electric flame assembly is controlled to stop working, and the control precision can be within ms grade in order to avoid the influence on the service life of the heater device caused by frequent closing or starting of the electric flame assembly.

The control method further comprises: and when the first temperature is detected to be lower than a first preset temperature limit value and the second temperature is detected to be lower than a second preset temperature limit value, starting the electric flame assembly.

In addition, the air purifier can also adopt or use the control method of the warm air device. Based on the foregoing description, those skilled in the art should easily use the above description, and detailed description thereof is omitted.

Correspondingly, this application still provides a control system of heating device, includes: at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor to cause the at least one processor to execute the method for controlling a heater unit as described above. The processor and the memory are typically connected by a bus. On the basis of the above description, the embodiment has been easily understood by those skilled in the art, and the drawings are not provided in this section.

The above description of the function or effect of each invention is intended to mean that it has the function or effect, and that it may have other functions or effects, and therefore should not be construed as unduly limiting the function or effect.

A heating apparatus, a control system and a method thereof provided by the claimed invention are described above in detail. The principles and embodiments of the claimed invention have been described herein using specific examples, which are presented only to assist in understanding the method and its core concepts of the claimed invention. It should be noted that while the best modes for carrying out the claimed invention have been described in detail, those familiar with the art to which this invention relates will recognize various alternative designs and embodiments for practicing the claimed invention within the scope of the appended claims.

Claims

1. The utility model provides a warm braw device, includes air inlet grid and fan unit spare, electric flame subassembly, goes out wind grid, controller, its characterized in that, the fan unit spare with the electric flame subassembly sets up the air inlet grid with go out inside the wind grid, the controller with the fan unit spare the electric flame subassembly is connected, the electric flame subassembly includes at least one electric flame nozzle, and the contained angle less than or equal to 90 degrees between the jet direction of this electric flame nozzle and the air current direction of the nozzle department of this electric flame nozzle.

2. The heater unit according to claim 1, wherein an included angle between a spraying direction of the electric flame nozzle and an air flow direction at a nozzle of the electric flame nozzle is less than or equal to 60 degrees, the electric flame nozzle is swingably provided between the fan and the air outlet, a swing angle is defined within 10 degrees, and the number of the electric flame nozzles is 2 or at least 3.

3. The heater unit according to claim 1, wherein an included angle between the injection direction of the electric flame nozzle and the air flow direction at the nozzle of the electric flame nozzle is less than or equal to 30 degrees; a flame baffle plate or a flame baffle rod with enlarged cross section area for blocking electric flame to enable the electric flame in the air duct to sweep is arranged in the air flow channel behind the electric flame nozzle, or the air flow channel behind the electric flame nozzle is in a zigzag shape to enable the electric flame to be mixed with air in the air flow channel more.

4. The heater unit according to claim 1, wherein the jet direction of the electric flame nozzle is parallel to or perpendicular to the air flow direction at the jet port of the electric flame nozzle, the air outlet grid is coated with a catalyst for decomposing ozone and/or an adsorbent for adsorbing nitrogen oxides, and the adsorbent is molecular sieve or activated carbon, zeolite, heteropoly acid, silica gel, peat containing NH3, and combinations thereof.

5. The heater of claim 1, wherein the air inlet side of the air outlet grid has an adsorbent for adsorbing nitrogen oxides, and the air outlet side of the air outlet grid is coated with a catalyst for decomposing ozone, wherein the adsorbent is molecular sieve or activated carbon, zeolite, heteropoly acid, silica gel, peat containing NH3, and any combination thereof.

6. The heater unit of claim 4 or 5, wherein the molecular sieve is a 3A (potassium A) type molecular sieve or a 4A (sodium A) type molecular sieve, a 5A (calcium A) type molecular sieve, a 10X (calcium X) type molecular sieve, a 13X (sodium X) type molecular sieve, a Y (sodium Y, calcium Y) type molecular sieve, a MOR type molecular sieve, and any combination thereof.

7. The heater apparatus according to claim 1, further comprising:

8. A control method of a heater unit according to any one of claims 1 to 7, the control method comprising:

9. The control method according to claim 8,

the step of controlling the working state of the electric flame assembly according to the first air quantity of the air outlet grid or the second air quantity of the air inlet grid comprises the following steps:

wherein the step of controlling the electric flame assembly to stop working comprises: controlling the electric flame assembly to be disconnected with the power supply module;

the step of controlling the operation of the electric flame assembly according to the first temperature of the air outlet grid or the second temperature of the electric flame nozzle comprises the following steps:

when the first temperature is detected to be lower than a first preset temperature limit value and the second temperature is detected to be lower than a second preset temperature limit value, starting the electric flame assembly;

the step of controlling the working state of the electric flame assembly according to the first air quantity of the air outlet grid and the second air quantity of the air inlet grid comprises the following steps:

when the difference value between the second air volume of the air inlet grid and the first air volume of the air outlet grid is larger than the third preset air volume limit value, controlling the electric flame assembly to stop working;

10. A control system of a heater unit, comprising:

at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor to cause the at least one processor to perform the method of controlling the warm air apparatus of claim 8 or 9.