CN217004416U - Electric heater - Google Patents

Abstract

The utility model discloses an electric heater, which comprises a metal bottom shell base body, an electric heating tube and a cover plate, wherein a cavity is arranged in the middle of the metal bottom shell base body, the electric heating tube is arranged in the cavity, the cover plate is fixedly connected with the metal bottom shell base body, and a water inlet and a water outlet are formed in the cover plate; the water inlet and outlet are respectively arranged at the corresponding positions close to each other in the cavity of the two electrode connecting outlet ends of the electric heating tube. The utility model has the advantages of good heating effect, compact structure, convenient installation and the like.

Description

Electric heater

Technical Field

The utility model relates to the technical field of electric heating, in particular to an electric heater which is applied to household appliances such as a range hood and the like and can generate hot water and steam through electric heating.

Background

At present, the electric heating is widely applied to various fields needing steam or hot water due to the characteristics of small volume, timely production and timely use, a small electric heater is a common component in household appliances, if a range hood needs hot water or steam to clean the range hood, namely the electric heater needs to be added, the hot water or steam is produced quickly while the small volume is ensured, the goal pursued by people is achieved, and the existing electric heater needs to be further improved.

For example, the utility model, which is named as an electric heating device and has the Chinese application number of CN200820160219.8, the application publication number of CN201293304Y, the application publication number of 2008.09.27, the application publication number of 2009.08.19, relates to an electric steam heater used in an ironing device. The steam electric heater comprises a metal water tank, wherein the top opening part of the metal water tank is sealed by a cover plate, a water inlet and a steam outlet are formed in the metal water tank, a groove which is recessed into a metal water tank base body is formed in the outer side of the bottom of the metal water tank, the trend of the groove is U-shaped, and a U-shaped electric heating pipe is arranged in the groove. Above-mentioned utility model not only can make the heat transmit for the metal basin fast because whole electrothermal tube is gone deep into in the base member of metal basin to also reduced the heat and scattered and disappear, improved the thermal efficiency, nevertheless, its compact structure and simple to operate improvement such as still have.

The above description is only for the purpose of assisting understanding of the technical solutions of the present invention, and does not represent an admission that all of the above are prior art.

Disclosure of Invention

Aiming at the problems in the prior art, the utility model aims to provide the electric heater which has the advantages of more compact structure, more convenient installation, fast heating and high energy utilization rate.

In order to achieve the purpose, the utility model adopts the following technical scheme.

An electric heater comprises a metal bottom shell base body, an electric heating tube and a cover plate, wherein a cavity is arranged in the middle of the metal bottom shell base body, the electric heating tube is arranged in the cavity, the cover plate is fixedly connected with the metal bottom shell base body, and a water inlet and a water outlet are formed in the cover plate; the water inlet and outlet are respectively arranged at the corresponding positions close to the cavity body of the two electrode connecting and outlet ends of the electric heating tube.

As a further explanation of the above scheme, a sealing ring is further arranged between the metal bottom shell base body and the cover plate, a small groove is arranged on the contact surface of the metal bottom shell base body and the cover plate, and the sealing ring is arranged in the small groove for positioning.

Furthermore, the cover plate and the metal bottom shell base body are provided with extension plates at corresponding positions around, mounting holes are formed in the extension plates, and the cover plate and the metal bottom shell base body are fixedly connected together through the mounting holes in a threaded connection mode.

Furthermore, a fixing plate for fixing the electric heating tube in the groove to prevent the electric heating tube from moving and moving is further arranged in the groove, the electric heating tube is clamped in the groove by the fixing plate, the sum of the cross sections of the fixing plate and the electric heating tube is smaller than the cross section of the groove, so that a gap is reserved between the fixing plate and the groove, and water can flow through the gap.

Furthermore, the surface of the cover plate is also provided with a fuse mounting seat and a temperature controller mounting seat.

The utility model has the beneficial effects.

Firstly, a plurality of bent front and back U-shaped series flow channels and electric heating tubes are adopted to increase the heating area and time, so that the water heating and steam generating effects are better.

Secondly, the utility model has compact structure and simpler and more convenient installation.

Thirdly, the electric heating tube is positioned in the cavity through the fixing plate and the boss, and the structure is firmer.

Drawings

Fig. 1 is a schematic plan view of the embodiment.

Fig. 2 is a schematic sectional view a-a of fig. 1.

Fig. 3 is a schematic diagram of the back structure of fig. 1.

Fig. 4 is a schematic diagram illustrating an internal structure of a cavity of a metal bottom case substrate.

Description of reference numerals:

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Detailed Description

The following further describes the embodiments of the present invention, so that the technical solutions and the advantages thereof of the present invention are more clear and definite. The following described embodiments are exemplary and are intended to be illustrative of the utility model, but are not to be construed as limiting the utility model.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout.

As shown in figures 1-4, the electric heater of the utility model comprises a metal bottom shell base 8, an electric heating tube 1 and a cover plate 4, wherein a cavity 8-2 is arranged in the middle of the metal bottom shell base 8, the electric heating tube 1 is arranged in the cavity 8-2, the cavity 8-2 is of a reciprocating structure which is folded back and forth up and down to form a forward and reverse U-shaped series flow channel structure, the electric heating tube 1 with the corresponding shape is arranged in the cavity 8-2 of the flow channel structure and penetrates out from the side wall of the cavity 8-2, concretely, in the embodiment, three water-resisting ribs 8-1 are arranged in the cavity 8-2 at equal intervals, the middle water-resisting rib 8-1 is led out from the upper side wall in the cavity 8-2, the water-resisting ribs 8-1 at two sides are led out from the lower side wall in the cavity 8-2, and a spacing groove is arranged between the water-resisting rib 8-1 and the side wall of the opposite surface, the electric heating tube 1 is arranged in a groove formed by the water-stop rib 8-1 in the cavity 8-2 in an M shape; a fixing plate 8-3 for fixing the electric heating tube 1 in the groove to prevent the electric heating tube from moving and moving is further arranged in the groove, the electric heating tube 1 is clamped in the groove by the fixing plate 8-3, the sum of the cross sections of the fixing plate 8-3 and the electric heating tube 1 is smaller than the cross section of the groove to ensure that a gap is reserved between the fixing plate 8-3 and the groove, water can flow through the gap, the cover plate 4 is fastened and screwed with the metal bottom shell base body 8, a sealing ring 9 is further arranged between the cover plate and the cover plate 8, in the embodiment, a small groove 8-5 is formed in the contact surface of the metal bottom shell base body 8 and the cover plate 4, and the sealing ring 9 is arranged in the small groove 8-5 for positioning; the corresponding position all around of apron 4 and metal bottom shell base member 8 has the extension board, sets up mounting hole 3 on the extension board, and it is together fixed with apron 4 and the 8 spiro union of metal bottom shell base member through mounting hole 3.

A boss 8-4 is also arranged at the bending part of the flow passage structure in the cavity 8-2, and an arc-shaped groove which is matched with the appearance of the electric heating tube 1 at the bending part is arranged on the boss 8-4, so that the electric heating tube 1 can be positioned more firmly in the cavity 8-2; the cover plate 4 is provided with water inlets and water outlets (2, 6) which are respectively arranged at the corresponding positions close to the cavity 8-2 at the two electrode connecting and outputting ends of the electric heating tube. The surface of the cover plate 4 is also provided with a fuse mounting seat 5 and a temperature controller mounting seat 7.

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 used merely for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to 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, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the present invention, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation that the first and second features are not in direct contact, but are in contact via another feature between them. 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. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

In the description of the specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means 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 utility model. In this specification, the schematic representations of the terms used above should not be understood to 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. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

Although embodiments of the present invention have been shown and described, it will be understood that the embodiments are illustrative and not restrictive, and that various changes, modifications, substitutions and alterations may be made herein without departing from the spirit and scope of the utility model as defined by the appended claims and their equivalents. The details not described in the detailed description are prior art or common general knowledge.

Claims (7)

1. An electric heater comprises a metal bottom shell base body, an electric heating tube and a cover plate, wherein a cavity is arranged in the middle of the metal bottom shell base body, the electric heating tube is arranged in the cavity, the cover plate is fixedly connected with the metal bottom shell base body, and a water inlet and a water outlet are formed in the cover plate; the water inlet and outlet are respectively arranged at the corresponding positions close to the cavity body of the two electrode connecting and outlet ends of the electric heating tube.

2. The electric heater of claim 1, wherein the cover plate and the metal bottom case base are provided with extension plates at corresponding positions around the cover plate and the metal bottom case base, the extension plates are provided with mounting holes, and the cover plate and the metal bottom case base are screwed and fixed together through the mounting holes.

3. The electric heater of claim 1 or 2, wherein a boss is further disposed at the bending portion of the flow channel structure in the cavity, and an arc-shaped groove adapted to the shape of the electric heating tube at the bending portion is disposed on the boss.

4. The electric heater of claim 1 or 2, wherein three water-proof ribs are arranged in the cavity at equal intervals, the middle water-proof rib is led out from the upper side wall in the cavity, the water-proof ribs at two sides are led out from the lower side wall in the cavity, a gap is arranged between each water-proof rib and the side wall of the opposite surface, and the electric heating tube is arranged in an M shape in a groove formed by the water-proof ribs in the cavity.

5. The electric heater of claim 4, wherein a fixing plate is disposed in the recess for fixing the electric heating tube therein, the fixing plate is used for fixing the electric heating tube in the recess, the sum of the cross sections of the fixing plate and the electric heating tube is smaller than the cross section of the recess, so as to ensure that a space is left between the fixing plate and the recess, and water can flow through the space.

6. The electric heater of claim 5, wherein a sealing ring is disposed between the metal base substrate and the cover plate, and a small groove is disposed on a contact surface of the metal base substrate and the cover plate, and the sealing ring is positioned in the small groove.

7. The electric heater of claim 1 or 2, wherein the cover plate surface is further provided with a thermostat mounting seat and a fuse mounting seat.

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