CN110953636A

CN110953636A - Electric heater

Info

Publication number: CN110953636A
Application number: CN201911322078.4A
Authority: CN
Inventors: 唐绍科; 张毅; 廖泓斌; 谢瑞良; 胡水强; 钟强
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2019-12-19
Filing date: 2019-12-19
Publication date: 2020-04-03

Abstract

The electric heater provided by the invention comprises: the bottom shell is provided with an air inlet; heating element locates the vertical upside of end casing, and with end casing fixed connection, including the heat-generating body that sets up along circumference, heating element's top is provided with the air outlet, and inside is provided with the cavity, the cavity is connected respectively the air intake with the air outlet. The air inlet is formed in the lower side of the heating assembly, the heating body in the heating assembly radiates outwards to provide heat for a user, and on the other hand, the cavity inside the heating assembly is heated, air inside the cavity is heated and moves upwards, and the air escapes from the air outlet, so that pressure difference is formed in the cavity, cold air is sucked from the air inlet of the bottom shell below the heating assembly, and stable heating circulation is formed. The electric heater that sets up like this need not built-in motor under the prerequisite of guaranteeing the heating, and the production noise is low, and convection current relaxs the sensation of wind for a short time, has effectively improved user's use comfort level, simple structure simultaneously, low cost.

Description

Electric heater

Technical Field

The invention relates to the technical field of household appliances, in particular to an electric heater.

Background

At present, heating equipment based on clean energy is gradually favored by users, and an electric heater is increasingly popular in the market as a product for heating by clean energy.

The existing electric heater can be divided into different categories according to the heat dissipation mode, such as the little sun which mainly radiates heat dissipation, the fast heating furnace which mainly radiates heat dissipation by natural convection, the warm air blower which mainly radiates heat by forced convection and the like, and the existing electric heater is used as a warm air blower product which mainly radiates heat by forced convection, and the existing electric heater is poor in use comfort of users due to the fact that a driving fan is arranged in the existing electric heater, and the problems of high noise, strong wind feeling and the like are caused.

Disclosure of Invention

Therefore, the technical problem to be solved by the invention is to overcome the defect of poor using comfort of the electric heater in the prior art, thereby providing the electric heater.

The invention provides an electric heater, comprising: the bottom shell is provided with an air inlet;

heating element locates the vertical upside of end casing, and with end casing fixed connection, including the heat-generating body that sets up along circumference, the inside cavity that is provided with of heating element, the top is connected with the air outlet, the cavity is connected respectively the air intake with the air outlet.

The heating assembly includes: a heating element disposed in a barrel shape;

the mesh enclosure is arranged outside the heating body and is arranged at intervals with the heating body;

the bottom support is arranged below the heating body along the height direction and is fixedly connected with one end, corresponding to the heating body and the mesh enclosure, of the bottom support respectively.

The heating body is an electric heating film.

The bottom support comprises a blocking rib arranged in the vertical direction, is suitable for being connected with the electric heating film in a rectangular arrangement, and encloses a square cylinder with the built-in cavity.

The inner side of the heating body is provided with a wiring terminal, the bottom support is provided with a wire passing hole, and the wiring terminal is suitable for being connected with an external power supply and a control circuit through the wire passing hole.

The electric heater still includes: the upper cover is arranged at the top of the heating assembly and fixedly connected with the heating assembly, the top end of the upper cover is provided with the air outlet, and the upper cover is fixed with a humidifying device.

The air outlets are uniformly arranged in a hole shape.

The humidifying device is a humidifying box provided with a water containing cavity and arranged in a groove body of the upper cover, the opening of the groove body is upward and faces the cavity in a protruding mode, and a water filling port and a plurality of exhaust holes are formed in the top of the humidifying box.

The air inlets are distributed on the side surface and/or the bottom surface of the bottom shell in a hole shape.

The heating assembly and the bottom shell are connected through a notch, and the notch is in a long hole shape and is communicated with the cavity.

The technical scheme of the invention has the following advantages:

1. the electric heater provided by the invention comprises: the bottom shell is provided with an air inlet; heating element locates the vertical upside of end casing, and with end casing fixed connection, including the heat-generating body that sets up along circumference, heating element's top is provided with the air outlet, and inside is provided with the cavity, the cavity is connected respectively the air intake with the air outlet.

Set up the air intake through the downside at heating element, the heat-generating body that sets up along circumference in the heating element can be simultaneously to all directions radiation heat dissipation on the one hand, and evenly dispel the heat in not co-altitude department, can provide the heat for the user of different positions department, on the other hand, heat inside cavity, the inside air of cavity is heated, upward movement, and escape from the air outlet, make the interior pressure difference that forms of cavity, let cold air inhale from bottom shell body air intake department of heating element below, form stable heating circulation. The electric heater that sets up like this, combine together even heat-conduction and convection heat transfer, make the electric heater release the heat simultaneously with the top all around, it is faster to make the environment heat up, the thermal efficiency of device has been promoted, and the cavity is inside to set up so the heating is more even because of heat-generating body circumference, it is faster to heat up, the convection current effect of formation is more stable, furthermore, under the prerequisite of guaranteeing the heating, need not built-in motor, the convection current relaxes the sensation of wind little, it is low to produce the noise, it is more energy-concerving and environment-protective, the heat dissipation is even, user's use comfort level has effectively.

2. The invention provides an electric heater, the heating component comprises: the heating body is arranged in a barrel shape; the mesh enclosure is arranged outside the heating body and is arranged at intervals with the heating body; the bottom support is arranged below the heating body along the height direction and is fixedly connected with one end, corresponding to the heating body and the mesh enclosure, of the bottom support respectively.

The setting of screen panel prevents on the one hand that electrified or high temperature's heat-generating body from taking place direct contact with the user, improves the security of device, and on the other hand avoids external object and heat-generating body to bump, avoids the damage of heat-generating body. The bottom support can provide the mounted position for heat-generating body and screen panel, prevents that heat-generating body and screen panel from taking place to rock, guarantees both intervals, avoids causing the damage of heat-generating body.

3. The bottom support of the electric heater provided by the invention comprises the blocking ribs arranged in the vertical direction, is suitable for being connected with the electric heating film arranged in a rectangular shape, and encloses a square cylinder with the built-in cavity.

Being a plurality of electric heat membranes of square tube-shape setting, the correspondence is the screen panel that square tube set up, on the one hand, it is higher to set up space utilization like this, makes things convenient for more users to use, and simultaneously, the product volume is littleer, can practice thrift the packing volume littleer, practices thrift manufacturing cost, and on the other hand, the heat-generating body can comprise the electric heat membrane of a plurality of fixed specifications, and reduction in production cost is convenient for maintain and change, improves the suitability of device part.

4. The electric heater provided by the invention comprises an upper cover, wherein the upper cover is arranged at the top of a heating assembly and fixedly connected with the heating assembly, the top end of the upper cover is provided with an air outlet, and a humidifying device is fixed on the upper cover.

The upper cover is provided with humidification device, utilizes heating element's heat radiation and the high temperature gas who flows through humidification device, heats humidification device, has increased the evaporation capacity of moisture among the humidification device, has realized the effect of humidification, prevents because of the air drying phenomenon that the heating appears, has promoted the travelling comfort that the user used.

5. According to the electric heater provided by the invention, the humidifying device is a humidifying box provided with a water containing cavity and arranged in the groove body of the upper cover, the opening of the groove body is upward and is arranged towards the cavity in a protruding manner, and the top of the humidifying box is provided with a water adding port and a plurality of exhaust holes.

The humidification box sets up in the cell body of electric heater, deepens the cavity setting more, has reduced the interval of humidification box with the heat-generating body, has improved the area of contact with the heating gas, has increased the heat radiation that the humidification box received, makes the evaporation efficiency of moisture correspond with the calorific capacity of heating member in the humidification box, makes air humidity keep in certain within range.

5. According to the electric heater provided by the invention, the connecting position of the heating component and the bottom shell is provided with the notch, and the notch is in a long hole shape and is communicated with the cavity.

Cold air can get into the cavity from the breach, and the setting of breach is to supplementing the air intake, avoids the convection current because of constantly heating and after the speed increase, air intake department velocity of flow increase, and because of the noise that sends of air vibrations.

Drawings

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

Fig. 1 is a schematic perspective view of an electric heater provided in the implementation of the present invention;

fig. 2 is an exploded view of the electric heater shown in fig. 1;

FIG. 3 is a schematic cross-sectional view of the electric heater shown in FIG. 1;

fig. 4 is a schematic perspective view of the bottom bracket and a portion of the electric heating film in the electric heater shown in fig. 1;

fig. 5 is a schematic perspective view of an upper cover without a humidifying box in the electric heater shown in fig. 1;

fig. 6 is a schematic perspective view of a humidifying box in the electric heater shown in fig. 1;

FIG. 7 is a schematic perspective view of another embodiment of an upper cover without a humidifying box according to an embodiment of the present invention;

fig. 8 is a schematic perspective view illustrating another embodiment of a humidifying box in the electric heater shown in fig. 6;

FIG. 9 is a perspective view of an upper cover portion provided with the humidifying box shown in FIG. 8;

description of reference numerals:

1-a bottom shell; 2-a heating assembly; 3-covering the cover; 21-electric heating film; 22-a mesh enclosure; 23-a bottom bracket; 231-a blocking rib; 211-a connection terminal; 232-line through hole; 31-a humidifying box; 32-a trough body; 33-air outlet; 311-water filling port; 312-vent hole; 11-an air inlet; 24-notch.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

As shown in fig. 1 to 9, the present embodiment provides an electric heater, including: the bottom shell 1 is provided with an air inlet 11; heating element 2 locates the vertical upside of end casing 1 to with end casing 1 fixed connection, including the heat-generating body that sets up along circumference, heating element 2 is inside to be provided with the cavity, and the top is connected with air outlet 33, and air intake 11 and air outlet 33 are connected respectively to the cavity. The heating body arranged in the circumferential direction is a heat radiation body which can generate heat in multiple directions. In the present embodiment, the heating element is a sheet and generates heat bidirectionally.

Through the downside at heating element 2 sets up air intake 11, the heat-generating body that sets up along circumference in heating element 2 can be on the one hand to all directions radiation heat dissipation simultaneously, and evenly dispel the heat in different height departments, can provide the heat for the user of different positions department, and on the other hand, heat inside cavity, the inside air of cavity is heated, upward movement, and escape from air outlet 33, make the pressure difference in the cavity, let the cold air inhale from bottom shell 1 air intake 11 below heating element 2, form stable heating circulation. The electric heater that sets up like this, combine together even heat-conduction and convection heat transfer, make the electric heater release the heat simultaneously with the top all around, make the surrounding environment intensification faster, the thermal efficiency of device has been promoted, and the cavity is inside to set up so the heating more evenly because of heat-generating body circumference, it is faster to heat up, the convection current effect of formation is more stable, furthermore, under the prerequisite of guaranteeing the heating, need not built-in motor, the convection current relaxes the sensation of wind little, it is low to produce the noise, it is more energy-concerving and environment-protective, the heat dissipation is even, user's use comfort level has effectively been improved, simple.

The heating assembly 2 comprises: a heating element disposed in a barrel shape; a mesh enclosure 22 provided outside the heating element and spaced apart from the heating element; and the bottom bracket 23 is arranged below the heating element along the height direction and is fixedly connected with one end corresponding to the heating element and the mesh enclosure 22 respectively. In this embodiment, the bottom bracket 23 is provided with a slot, a buckle is disposed in the slot and is suitable for fixing the heating element, the bottom side of the mesh enclosure 22 is provided with a protruding piece, and the protruding piece is provided with a screw hole matched with the bottom bracket 23, so that the mesh enclosure 22 and the bottom bracket 23 are fixedly connected through a screw.

The setting of screen panel 22 prevents on the one hand that electrified or high temperature's heat-generating body from taking place direct contact with the user, improves the security of device, and on the other hand avoids external object and heat-generating body to bump, avoids the damage of heat-generating body. The bottom support 23 can provide the mounted position for heat-generating body and screen panel 22, prevents that heat-generating body and screen panel 22 from taking place to rock, guarantees both intervals, avoids causing the damage of heat-generating body.

In the present embodiment, the heating element is four electric heating films 21, and as an alternative embodiment, the heating element may be a plurality of electric heating films with heat conducting liquid inside, which are arranged uniformly and in a ring shape or a square shape.

The bottom bracket 23 includes a blocking rib 231 arranged along the vertical direction, is suitable for being connected with the electric heating film 21 arranged in a rectangular shape, and encloses a square cylinder with a built-in cavity. The blocking rib 231 is provided with two grooves suitable for embedding and fixing the electrothermal film 21, and the embedded electrothermal film 21 is arranged at 90 degrees.

A plurality of electric heat membrane 21 that are square tube-shape setting correspond the screen panel 22 that is square tube-shape setting, on the one hand, it is higher to set up space utilization like this, make things convenient for more users to use, and simultaneously, the product volume is littleer, can practice thrift the packing volume littleer, practices thrift manufacturing cost, and on the other hand, the heat-generating body can comprise the electric heat membrane 21 of a plurality of fixed specifications, and reduction in production cost is convenient for maintain and change, improves the suitability of device part. As an alternative embodiment, the electric heating film 21 may be formed in a cylindrical shape, or in a triangular prism or other polygonal prism arrangement.

The heating body inboard is provided with binding post 211, is provided with on the bottom support 23 and crosses line hole 232, and the wire that binding post 211 connects passes and crosses line hole 232 and connect external power source and control circuit.

The electric heater still includes upper cover 3, locates heating element 2's top, with heating element 2 fixed connection, the top is provided with air outlet 33, and upper cover 3 is fixed with humidification device. The upper cover 3 is provided with a humidifying device, the heat radiation of the heating component 2 and the high-temperature gas flowing through the humidifying device are utilized to heat the humidifying device, the moisture evaporation capacity in the humidifying device is increased, the humidifying effect is realized, the air drying phenomenon caused by heating is prevented, and the comfort of the user is improved.

The humidifying device is a humidifying box 31 provided with a water containing cavity and is arranged in a groove body 32 of the upper cover 3, the opening of the groove body 32 is upward and is arranged towards the cavity in a protruding mode, and a water adding port 311 and a plurality of exhaust holes 312 are arranged at the top of the humidifying box 31. In this embodiment, the air outlets 33 are uniformly arranged around the groove 32 in a hole shape.

The humidification box 31 sets up in the cell body 32 of electric heater, deepens the cavity setting more, has reduced the interval of humidification box 31 with the heat-generating body, has improved the area of contact with the heated gas, has increased the heat radiation that the humidification box 31 received, makes the evaporation efficiency of moisture correspond with the calorific capacity of heating member in the humidification box 31, makes air humidity keep in certain within range.

As an alternative embodiment, the air vent 312 may be added to each side of the upper cover 3.

As another alternative embodiment, the slot 32 may be in a step shape with an arc, and protrude toward the cavity, so that the area of the humidification box 31, which is arranged corresponding to the shape of the slot 32, receiving heat radiation is increased, the evaporation efficiency of water in the humidification box 31 is increased, the air humidity is increased, and the comfort level of the user is improved.

As another alternative embodiment, the upper cover 3 may not be provided with the groove 32, and the humidification cartridge 31 may be engaged and fixed with a through hole at the top of the upper cover 3 by a catch provided at the bottom.

As another alternative embodiment, the upper cover 3 may not be provided with the humidifying box 31, and the user may use the water in the tank 32 directly.

In this embodiment, the air inlets 11 are distributed on the side surface of the bottom casing 1 in a hole shape, and as an alternative embodiment, the air inlets 11 may be arranged on the bottom surface of the bottom casing 1 or on both the side surface and the bottom surface.

A gap 24 is arranged at the connecting position of the heating component 2 and the bottom shell 1, and the gap 24 is in a long hole shape and communicated with the cavity. Cold air can enter the cavity from the notch 24, the notch 24 is arranged to supplement the air inlet 11, and the phenomenon that the flow speed of the air inlet 11 is increased and noise is generated due to air vibration after convection is increased due to continuous heating is avoided.

As alternative embodiments, the notch 24 may not be provided, or the notch 24 may be automatically opened or closed by a circuit control

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims

1. An electric heater, comprising:

the bottom shell (1) is provided with an air inlet (11);

heating element (2), locate the vertical upside of end casing (1), and with end casing (1) fixed connection, including the heat-generating body that sets up along circumference, heating element (2) inside is provided with the cavity, and the top is connected with air outlet (33), the cavity is connected respectively air intake (11) with air outlet (33).

2. The electric heater according to claim 1, characterized in that the heating assembly (2) comprises:

the heating body is arranged in a barrel shape;

a mesh enclosure (22) arranged outside the heating element and spaced from the heating element;

and the bottom support (23) is arranged below the heating body along the height direction and is fixedly connected with one end of the heating body corresponding to the mesh enclosure (22) respectively.

3. The electric heater according to claim 2, characterized in that the heating element is an electric heating film (21).

4. The electric heater according to claim 3, characterized in that the bottom bracket (23) comprises a blocking rib arranged along the vertical direction, and is suitable for connecting the electric heating film arranged in a rectangular shape and enclosing a square tube with the cavity inside.

5. The electric heater according to claim 4, wherein a connection terminal (211) is disposed inside the heating element, a wire passing hole (232) is disposed on the bottom bracket (23), and the connection terminal (211) is adapted to be connected to an external power source and a control circuit through the wire passing hole (232).

6. The electric heater of claims 1-5, further comprising:

the upper cover (3) is arranged at the top of the heating component (2) and fixedly connected with the heating component (2), the top end of the upper cover is provided with the air outlet (33), and the upper cover (3) is fixed with a humidifying device.

7. The electric heater according to claim 6, characterized in that the air outlets (33) are uniformly arranged in a hole shape.

8. The electric heater according to claim 6, wherein the humidifying device is a humidifying box (31) provided with a water containing cavity, the humidifying box is arranged in a groove body (32) of the upper cover (3), the groove body (32) is opened upwards and is arranged in a protruding manner towards the cavity, and a water adding port (311) and a plurality of exhaust holes (312) are arranged at the top of the humidifying box (31).

9. The electric heater according to claim 1, wherein the air inlets (11) are distributed on the side surface and/or the bottom surface of the bottom shell (1) in a hole shape.

10. The electric heater according to claim 1, characterized in that a gap (24) is provided at a connecting position of the heating assembly (2) and the bottom casing (1), and the gap (24) is in a shape of a long hole and is communicated with the cavity.