CN211009278U - Volute assembly and air heater - Google Patents

Abstract

The application discloses spiral case subassembly and air heater. The volute assembly comprises a volute and a fan, wherein the volute comprises a volute portion, a first ventilation portion and a second ventilation portion, and the first ventilation portion and the second ventilation portion are connected with the volute portion. The fan is arranged in the volute part, the central axis of the fan and the central axis of the volute part are arranged in a deviating mode, and the fan is arranged on one side where the first ventilation part is located in a deviating mode. So, the wind channel broad that corresponds to second ventiduct that fan and spiral form portion formed can increase the airflow that flows from second ventiduct, when needs improve the airflow that second ventiduct flows out, need not to improve the rotational speed of fan, has reduced the energy consumption.

Description

Volute assembly and air heater

Technical Field

The present application relates to household appliances, and more particularly, to a volute assembly and an air heater.

Background

The air heater is a device for heating indoor air, and comprises a volute and a fan, wherein the fan is arranged on the volute with two air channels, and when the fan rotates, one of the two air channels is used for air inlet, and the other air channel is used for air outlet. However, the air duct has a certain resistance, and when the air output of the air duct needs to be increased, the rotating speed of the fan needs to be increased, so that the energy consumption is high.

SUMMERY OF THE UTILITY MODEL

The utility model provides a spiral case subassembly and air heater.

The volute assembly of the embodiment of the application comprises a volute and a fan, wherein the volute comprises a volute part and a first ventilation part and a second ventilation part which are connected with the volute part. The fan is arranged in the volute part, the central axis of the fan and the central axis of the volute part are arranged in a deviating mode, and the fan is arranged on one side where the first ventilation part is located in a deviating mode.

In the volute component of the embodiment of the application, the air channel which is formed by the fan and the volute part and corresponds to the second ventilation part is wide, the air flow flowing out of the second ventilation part can be increased, when the air flow flowing out of the second ventilation part needs to be improved, the rotating speed of the fan does not need to be improved, and the energy consumption is reduced.

In some embodiments, the volute portion includes a mounting plate and a volute side plate extending from an edge of the mounting plate, the volute side plate and the mounting plate enclose a receiving space, and the fan is mounted on the mounting plate and received in the receiving space. The volute side plate comprises a first connecting section and a second connecting section, the first connecting section is connected with the first ventilating portion, the second connecting section is connected with the second ventilating portion, and the distance between the fan and the second connecting section is larger than the distance between the fan and the first connecting section.

In some embodiments, the first ventilation part extends from a tangential direction of the volute part and is formed with a first passage communicating with the receiving space.

In some embodiments, the second vent portion extends from a tangential direction of the volute portion, and is formed with a second passage communicating with the receiving space.

In some embodiments, the wind turbine includes a motor and a wind wheel connected to the motor, the motor is mounted on the mounting plate and is used for driving the wind wheel to rotate, when the motor drives the wind wheel to rotate along a first direction, the wind wheel forms an airflow sucked from the first ventilation portion and flowing out from the second ventilation portion, and when the motor drives the wind wheel to rotate along a second direction opposite to the first direction, the wind wheel forms an airflow sucked from the second ventilation portion and flowing out from the first ventilation portion.

In some embodiments, the ventilation direction of the first ventilation portion is parallel to the ventilation direction of the second ventilation portion.

The present application further provides an air heater, which includes the volute assembly and the heating device of any one of the above embodiments, wherein the heating device corresponds to the second ventilating portion.

In some embodiments, the air heater includes a housing in which the volute assembly is disposed, the housing and the first vent forming a first air channel, the housing and the second vent forming a second air channel in which the heating device is disposed.

In some embodiments, the air heater includes a panel disposed on the housing, the panel defining a first air opening and a second air opening spaced apart from each other, the first air opening communicating with the first air channel, and the second air opening communicating with the second air opening.

In some embodiments, an accommodating space is formed between the first ventilating part and the second ventilating part, and the air heater includes an ion generator disposed in the accommodating space for generating ions into the first ventilating part and/or the second ventilating part.

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

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic perspective view of an air heater according to an embodiment of the present invention;

fig. 2 is an exploded schematic view of an air heater according to an embodiment of the present invention;

fig. 3 is a schematic view of the internal structure of the air heater according to the embodiment of the present invention with the cover removed;

FIG. 4 is a schematic plan view of a volute assembly of an air heater according to an embodiment of the present invention;

FIG. 5 is a schematic plan view of a volute of an air heater according to an embodiment of the present invention;

fig. 6 is an exploded schematic view of a fan of an air heater according to an embodiment of the present invention;

fig. 7 is a schematic perspective view of a housing of an air heater according to an embodiment of the present invention;

fig. 8 is a schematic perspective view of the internal structure of the air heater according to the embodiment of the present invention;

fig. 9 is a perspective view schematically illustrating a heating device of an air heater according to an embodiment of the present invention.

Description of the main element symbols:

the air heater 1000, the volute assembly 10, the volute 11, the fan 12, the volute 111, the first ventilation part 112, the second ventilation part 113, the accommodating space 114, the accommodating space 115, the mounting plate 1111, the volute side plate 1112, the motor mounting hole 1113, the first connecting section 1114, the second connecting section 1115, the central axis 1116 of the volute 111, the first channel 1121, the second channel 1131, the motor 121, the wind wheel 122, the central axis 123 of the fan 12, the first direction a, the second direction b, and the mounting hole 1213;

the air conditioner comprises a shell 20, a cover plate 21, a side plate 22, a bottom plate 23, a first air duct 211, a second air duct 212, a second threaded fastening hole 213, a first air opening 2111, a second air opening 2121, a first threaded fastening hole 221, a third threaded fastening hole 222 and a fifth threaded fastening hole 231;

heating device 30, fourth screw fastening hole 31, ionizer 40, fixing clip 50, and swinging frame 60.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" 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, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. 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 disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

Referring to fig. 1 to 4, a scroll assembly 10 of an air heater 1000 according to an embodiment of the present disclosure includes a scroll 11 and a fan 12. The scroll casing 11 includes a scroll portion 111 and first and second ventilation portions 112 and 113, and the first and second ventilation portions 112 and 113 are connected to the scroll portion 111. The fan 12 is disposed in the volute 111. The central axis 123 of the fan 12 and the central axis 1116 of the scroll portion 111 are offset, and the fan 12 is offset to the side where the first ventilation portion 112 is located.

In this way, the air duct formed by the fan 12 and the scroll portion 111 corresponding to the second ventilating portion 113 is wide, and when the air flow rate flowing out from the second ventilating portion 113 needs to be increased, the air flow rate flowing out from the second ventilating portion 113 can be increased without increasing the rotation speed of the fan 12, thereby reducing the energy consumption.

Specifically, the offset distance C between the central axis 123 of the fan 12 and the central axis 1116 of the scroll portion 111 depends on the amount of the airflow flowing out of the second ventilating portion 113 to be lifted by the second ventilating portion 113.

Referring to FIG. 4, in some embodiments, the volute 111 includes a mounting plate 1111 and a volute side plate 1112, the volute side plate 1112 extending from an edge of the mounting plate 1111. The volute side plate 1112 and the mounting plate 111 enclose a receiving space 114. The fan 12 is mounted on the mounting plate 1111 and accommodated in the first accommodation space 114. The volute side plate 1112 includes a first connecting section 1114 connected to the first ventilation portion 112 and a second connecting section 1115 connected to the second ventilation portion 113. The distance D2 between the fan 12 and the second section 1115 is greater than the distance D1 between the fan 12 and the first section 1114 (D2 > D1). It is appreciated that the greater the eccentricity distance C, the greater the distance D2 between the fan 12 and the second link 1115, and the lesser the distance D1 between the fan 12 and the first link 1114.

Thus, the fan 12 is eccentrically arranged, so that the distance D2 between the fan 12 and the second connecting section 1115 is increased, the second ventilation portion 113 is widened, the ventilation quantity passing through the second ventilation portion 113 is increased without increasing the rotating speed of the fan 12, and the energy consumption is reduced.

Specifically, the surface of the volute side plate 1112 on the side enclosing the first receiving space 114 is smooth, a section of the volute side plate 1112 between the first connecting section 1114 and the second connecting section 1115 is arc-shaped, and the smooth arc-shaped surface only provides little resistance when the airflow passes through, and can softly change the flowing direction of the airflow, so that no turbulent flow is caused, the ventilation efficiency is improved, and the energy consumption is reduced.

Referring to fig. 5, in some embodiments, the first ventilation portion 112 extends tangentially from the volute side plate 1112 of the volute portion 111, and is formed with a first channel 1121 communicating with the first receiving space 114.

Thus, after the direction of the airflow is changed through the volute side plate 1112, the airflow can flow out along the first channel 1121 extending in the tangential direction, and the structure reduces the resistance of the first channel 1121 to the air to the maximum extent, reduces the internal loss and reduces the energy consumption.

Referring to fig. 5, in some embodiments, the second venting portion 113 extends tangentially from the volute side plate 1112 of the volute portion 111 and is formed with a second channel 1131 communicating with the first receiving space 114.

Thus, after the airflow changes direction through the volute side plate 1112, the airflow can flow out along the second channel 1131 extending in the tangential direction, and this structure reduces the resistance of the second channel 1131 to the air to the maximum extent, reduces the internal loss, and reduces the energy consumption.

Referring to fig. 3 to 6, in some embodiments, the wind turbine 12 includes a motor 121 and a wind wheel 122 connected to the motor 121, the motor 121 is mounted on a mounting plate 1111 and is configured to drive the wind wheel 122 to rotate, the wind wheel 122 forms an airflow sucked from the first ventilating portion 112 and flowing out of the second ventilating portion 113 when the motor 121 drives the wind wheel 122 to rotate in a first direction a, and the wind wheel 122 forms an airflow sucked from the second ventilating portion 113 and flowing out of the first ventilating portion 112 when the motor 121 drives the wind wheel 122 to rotate in a second direction b opposite to the first direction a.

Thus, two operating modes of the air heater 1000 with different air flow directions can be obtained by the forward and reverse rotation of the fan 12. For example, when the motor 121 rotates in the first direction a, the airflow is sucked from the first channel 1121, and an air heating device may be provided in the second ventilation part 113, so that warm air flowing out of the second channel 1131 may be obtained. It can be understood that when the air heating device is disposed in the second ventilating portion 113, the wind resistance of the second ventilating channel 1131 is relatively large, such as the above, the central axis 123 of the fan 12 and the central axis 1116 of the volute 111 are eccentrically disposed, so that the amount of air flowing through the second ventilating channel 1131 is relatively large, which is beneficial to ensuring the amount of air discharged after passing through the air heating device, and the air heater 1000 can rapidly heat the surrounding air environment.

When the motor 121 rotates in the second direction b, the airflow is sucked from the second channel 1131, and an air cleaning device may be disposed in the first ventilation part 112, so that the cleaned air flowing out from the first channel 1121 may be obtained. Both modes of operation may allow for a wider range of uses for the air heater 1000.

Specifically, the type of the wind wheel 122 may be a vertical axis wind wheel or a horizontal axis wind wheel, for example, a vertical axis wind wheel is adopted in the present embodiment, or the wind wheel 122 is a centrifugal wind wheel. Thus, the air flows perpendicular to the rotation axis of the wind wheel 122. The air heater 1000 is a curved air duct formed by the first ventilating portion 112, the volute portion 111 and the second ventilating portion 113, the fan 12 is placed at the curved portion of the air duct, the vertical axis wind wheel can guide the airflow along the circumferential direction perpendicular to the rotating axis of the wind wheel 122, the resistance is small, and the ventilation efficiency is high.

Of course, the wind wheel 122 may also be a horizontal axis wind wheel, or the wind wheel 122 may be an axial flow wind wheel, and the horizontal axis wind wheel may be placed in the center of the wind channel, and two different flow directions of air are obtained by the forward and backward rotation of the motor 121. But compared with the vertical axis wind wheel, the wind wheel has larger resistance and smaller ventilation volume in the wind channel with limited size.

Specifically, referring to fig. 6, the motor 121 is provided with a mounting hole 1213, the mounting seat 1111 is provided with a motor mounting hole 1113 corresponding to the motor mounting position, and the motor 121 is mounted on the mounting seat 1111 through the mounting hole 1213 and the motor mounting hole 1113 by using a bolt and a nut.

Referring to fig. 3, in some embodiments, the ventilation direction of the first ventilation part 112 is parallel to the ventilation direction of the second ventilation part 113.

Specifically, when the motor rotates in the first direction a, the air flow sucked from the first ventilation part 112 changes the flow direction 180 ° by the scroll part and flows out from the second ventilation part 113 parallel to the first ventilation part 112.

Referring to fig. 8 and 9, the present application further discloses an air heater 1000, the air heater 1000 includes a heating device 30 and the volute assembly 10 according to any of the above embodiments, and the heating device 30 is disposed corresponding to the second ventilating portion 113. The heating device 30 can heat ambient air by the heat generating components, and can continuously heat circulated air in an environment where air circulates, thereby heating air flowing out of the second ventilating portion 113. It can be understood that when the heating device 30 is disposed in the second ventilating portion 113, the wind resistance of the second channel 1131 is relatively large, such as the above eccentric arrangement of the central axis 123 of the fan 12 and the central axis 1116 of the volute 111, so that the air volume flowing through the second channel 1131 is relatively large, which is beneficial to ensuring the air volume after passing through the heating device 30, and the air heater 1000 can rapidly heat the surrounding air environment.

Specifically, the heating means 30 may be resistance heating, electromagnetic heating, or infrared heating. The present embodiment adopts a resistance heating method. Further, a PTC heater is adopted, the heating effect of the PTC heater is changed along with the temperature of the PTC heater, and therefore safety performance is good.

Referring to fig. 2 and 7, in some embodiments, the air heater 1000 includes a housing 20 with the volute assembly 10 disposed in the housing 20. The housing 20 and the first ventilation portion 112 form a first air duct 211, the housing 20 and the second ventilation portion 113 form a second air duct 212, and the heating device 30 is disposed in the second air duct 212.

Specifically, the housing 20 includes a cover plate 21, side plates 22, and a bottom plate 23 extending from the mounting plate 1111. The side plate 22 is disposed at a circumferential edge of the bottom plate 23, and the side plate 22, the cover plate 21 and the bottom plate 23 enclose an inner space of the air heater 1000. The space surrounded by the side plate 22, the cover plate 21 and the bottom plate 23 is substantially rectangular parallelepiped. Therefore, the volute assembly 10 is wrapped in the air heater 1000 by the housing 20, so that the working environment stability of the fan 12 is protected, the interference of external environmental factors is reduced, and the service life of the fan 12 is prolonged.

The cover plate 21 covers the top of the volute assembly 10, the cover plate 21 may form a first air channel 211 with the first ventilation part 112, and the cover plate 21 and the second ventilation part 113 may form a second air channel 212. The heating device 30 is disposed in the second air duct 212.

Therefore, the ventilation channel only has the outlets and inlets of the air flows at two ends, and other parts in the channel are closed, so that the air flows towards a single direction, and the ventilation efficiency is improved.

Specifically, the side plate 22 and the bottom plate 23 may be made of plastic, and the side plate 22 and the bottom plate 23 may be integrally formed by, for example, an injection molding process, so that the weight is light and the sealing performance is good. Meanwhile, as the temperature of the working environment of the air heater 1000 is higher, the aging speed of the side plates 22 and the bottom plate 23 can be slowed down by adopting a plastic anti-oxidation process, and the service lives of the side plates 22 and the bottom plate 23 are prolonged.

Similarly, the cover plate 21 may be made of plastic, and the cover plate 21 is made by an injection molding process with the addition of a plastic antioxidant.

The side plate 22 is formed with a first screw fastening hole 221, the cover plate 21 is formed with a second screw fastening hole 213 corresponding to the first screw fastening hole 221, and the cover plate 21 forms a substantially rectangular parallelepiped space with the side plate 22 and the bottom plate 23 through the first screw fastening hole 221 and the second screw fastening hole 213 using screw fasteners.

Further, the side plate 22 and the bottom plate 23 may be formed separately. The bottom plate 23 may be made of a metal material and formed by a sheet metal stamping process. For example, the mounting plate 1111 is made of stainless steel, the mounting plate 1111 directly contacts with the internal operating temperature of the air heater 1000, and an anti-oxidation treatment is performed after the mounting plate 1111 is formed, that is, an anti-oxidation coating is coated on the surface of the mounting plate 1111.

The cover plate 21 and the side plate 22 may also be made of metal material, for example, the cover plate 21 and the side plate 22 are formed by a sheet metal stamping process. The side plate 22 has screw fastening holes formed at the connection portions with the edges of the cover plate 21 and the bottom plate 23, and the cover plate 21, the side plate 22 and the bottom plate 23 are connected in sequence by screw connection to form the housing 20.

Specifically, the heating device 30 is disposed in the second air duct 212. The heating device is formed with a fourth screw fastening hole 31, and the side plate 22 is formed with a third screw fastening hole 222 at a position corresponding to the heating device 30. The heating means 30 is fastened to the side plate 22 by means of screw fasteners through the third screw fastening holes 222 and the fourth screw fastening holes 31. The rotation of the fan 12 can cause vibrations in the operation of the air heater 1000, and the heating device 30 can be more firmly fixed on the mounting plate 1111 by using a thread fastening mode, so that the heating efficiency is prevented from being affected by loosening, and the safety performance is also improved.

Specifically, the heating device 30 is installed in the second air path 212, and generates resistance to the air flow passing through the second air path 212 when the air heater 1000 is operated. When the central axis of the fan 12 and the central axis of the scroll 111 are disposed to overlap each other, that is, the fan 12 is disposed at a center without eccentricity, the widths of the first ventilation part 112 and the second ventilation part 113 are the same, and the flow rates of the air flowing through the first ventilation part 112 and the second ventilation part 113 are the same, but the flow rate of the air flowing through the second ventilation part 113 is deteriorated due to the resistance of the heating device 30. The amount of air flow of the second ventilating portion 113 is increased by increasing the width of the second ventilating portion 113 by the offset arrangement of the central axis of the fan 12 and the central axis of the scroll portion 111, but at the same time, the amount of air flow of the first ventilating portion 112 is reduced. Therefore, in this embodiment, the offset distance between the central axis of the fan 12 and the central axis of the scroll 111 is determined according to the loss of the amount of airflow through which the heating device 30 convects. The amount of air flow raised to the second ventilating portion 113 by the eccentric arrangement is at most half of the amount of air flow consumed by the heating device 30.

Specifically, a fifth screw fastening hole 231 is formed at an outer side of the bottom plate 23. The fixing clip 50 is fixedly mounted to the base plate 23 through the fifth screw fastening hole 231. The fixing clip 50 is used to mount the air heater 1000 on a wall or a ceiling.

Referring to fig. 5, in some embodiments, the housing 20 is formed with a first port 2111 and a second port 2121 spaced apart from each other, the first port 2111 is communicated with the first air passage 211, and the second port 2121 is communicated with the second air passage 212.

Specifically, as shown in fig. 2, the first air inlet 2111 and the second air inlet 2121 may be used as external ventilation pipes to guide the air flow flowing out of the air heater 1000 to other places, and if the heat insulation ventilation pipes are used, the air heater 1000 may be installed in an outdoor environment such as a balcony, thereby saving an indoor space and improving space utilization.

Specifically, the number of the first tuyeres 2111 may be multiple, for example, the number of the first tuyeres 2111 is 2, 3, and the like, in the embodiment of the present application, the number of the first tuyeres 2111 is two, and the orientations of the two first tuyeres 2111 are different.

Specifically, the number of the second ports 2121 may be plural, for example, the number of the second ports 2121 is 2, 3, or the like, in the embodiment of the present application, the number of the second ports 2121 is two, and the orientations of the two second ports 2121 are different.

Specifically, the first air duct 211 and the second air duct 212 may be provided with the swing frame 60. The swing blade is installed in the swing frame 60, the swing blade is controlled by a motor, and the swing blade can be rotated by the motor to selectively open or close one of the first air ports 2111, one of the second air ports 2121, or the swing blade is centered so that all the openings are in an open state.

Thus, the swing blade can control the opening and closing of the two first ports 2111 and the two second ports 2121, and the operation mode of the air heater 1000 can be more diversified. For example, when the fan 12 rotates in the first direction a, the first air duct 211 is an air inlet duct, and the second air duct 212 is an air outlet duct. The second air inlet 2121 is connected to two heat preservation pipelines of the second air inlet 2121 and is connected to two different indoor spaces, and the air outlet of the two pipelines can be controlled by controlling the rotation of the swinging blade, so that the air of both rooms is controlled to be ventilated or only one of the rooms is controlled to be ventilated.

Referring to fig. 3, in some embodiments, the first ventilating portion 112 and the second ventilating portion 113 directly form an accommodating space 115, and the air heater 1000 includes an ion generator 40 disposed in the accommodating space 115. The ion generator 40 serves to generate ions into the first and/or second ventilation parts 112 and 113.

Specifically, the ionizer 40 may be led out of the emitter head through a lead wire, the emitter head being installed at the first ventilation part 112 and the second ventilation part 113, or only at the first ventilation part 112 or the second ventilation part 113. The emitter emits electrons, and the electrons are combined with oxygen molecules to generate ions beneficial to a human body or form macromolecular settlement with dust, so that the effect of purifying air is achieved.

In the embodiment of the present application, the air heater 1000 may operate in two operation modes:

1) air heating mode: when the fan 12 rotates in the first direction a, air enters from the first air port 2111, passes through the first ventilation part 112, changes the direction of air flow through the scroll part 111, and is heated by the heating device 30 in the second ventilation part 113 and then flows out from the second air port 2121. The fan 12 is continuously operated, and the air is continuously circulated and heated, thereby playing a role in changing the temperature of the outside air.

2) An air purification mode: when the fan 12 rotates along the second direction b, air enters from the second air port 2121, passes through the second ventilation portion 113, changes the airflow direction through the scroll portion 111, and in the first ventilation portion 112, the emission head of the ionizer 40 emits electrons, and the electrons combine with oxygen molecules to generate ions beneficial to the human body or form macromolecules with dust to settle, and then flow out from the first air port 2111. The fan 12 is continuously operated, and the air is continuously circulated and purified, thereby playing a role in changing the quality of the outside air.

In the description herein, references to the description of the terms "one embodiment," "certain embodiments," "an illustrative embodiment," "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, schematic representations of the above terms do not necessarily 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.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A volute assembly, comprising:

a volute including a volute portion and first and second vent portions both connected to the volute portion; and

the fan is arranged in the volute part, the central axis of the fan and the central axis of the volute part are arranged in a deviating mode, and the fan is arranged on one side where the first ventilation part is located in a deviating mode.

2. The volute assembly of claim 1, wherein the volute includes a mounting plate and a side plate extending from an edge of the mounting plate, the side plate and the mounting plate defining a receiving space, the fan being mounted on the mounting plate and received in the receiving space;

the curb plate include with first linkage segment that first ventilation portion is connected and with the second linkage segment that second ventilation portion is connected, the fan with distance between the second linkage segment is greater than the fan with distance between the first linkage segment.

3. The volute assembly of claim 2, wherein the first plenum extends tangentially from the volute and forms a first passage in communication with the receptacle.

4. The volute assembly of claim 2, wherein the second vent portion extends tangentially from the volute portion and forms a second passageway that communicates with the receptacle.

5. The volute assembly of claim 2, wherein the fan includes a motor and a rotor coupled to the motor, the motor being mounted to the mounting plate and configured to drive the rotor to rotate, the rotor configured to provide an airflow drawn in from the first plenum and drawn out from the second plenum when the motor drives the rotor to rotate in a first direction, the rotor configured to provide an airflow drawn in from the second plenum and drawn out from the first plenum when the motor drives the rotor to rotate in a second direction opposite the first direction.

6. The volute assembly of claim 1, wherein a direction of ventilation of the first ventilation portion is parallel to a direction of ventilation of the second ventilation portion.

7. An air heater, comprising:

the volute assembly of any of claims 1-6; and

and the heating device is arranged corresponding to the second ventilation part.

8. The air heater according to claim 7, wherein the air heater includes a housing in which the volute assembly is disposed, the housing and the first vent forming a first air channel, the housing and the second vent forming a second air channel in which the heating device is disposed.

9. The air heater of claim 8, including a panel disposed in the housing, the panel defining first and second spaced apart vents, the first vent in communication with the first air passage and the second vent in communication with the second air passage.

10. The air heater according to claim 9, wherein an accommodating space is formed between the first ventilating portion and the second ventilating portion, and the air heater includes an ion generator provided in the accommodating space for generating ions into the first ventilating portion and/or the second ventilating portion.

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