CN204534778U - Heating units for electric heaters - Google Patents

Abstract

The utility model provides a unit that generates heat for electric heater, include: the heating tube is provided with a far infrared radiation coating on the outer surface of the side wall of the heating tube. According to the utility model discloses a heat generation unit for electric heater, the inside hollow channel of heating tube can be used to carry out the heat-conduction of first direction, has the far infrared radiation coating on the surface of the lateral wall of heating tube, can be used to carry out the heat radiation of second direction, simple structure, and the radiating area is wide, the radiating effect is good.

Description

Heating units for electric heaters

technical field

The utility model relates to the technical field of household appliances, in particular to a heating unit for an electric heater.

Background technique

At present, the heating devices used in convection electric heaters in the domestic and foreign markets are aluminum X-shaped fin heating tubes, series aluminum sheet-type heating tubes, heating wires, etc., which only have thermal convection heating effects, and generally can only be installed on electric heaters. At the bottom, the heat dissipation efficiency cannot be fully utilized. The heating devices of visible light radiation heaters such as far-infrared electric heaters and small suns are nickel-chromium wire quartz tubes, tungsten wire halogen tubes, carbon fiber carbon tubes, electric heating wire ceramic heating plates, and electric heating wire ceramic heating elements. Such heating devices only have the effect of thermal radiation heating, and rely on the reflection cover to reflect heat, which will cause the heating device to be locally heated, while the rest of the area is not hot, the heat dissipation is not uniform enough, and the quartz tube, halogen tube, carbon tube The pipes are all made of quartz glass, which may cause the electric heater to break or burst when it is heated accidentally, which brings certain safety hazards to users, and this type of heating device is also accompanied by visible light when it is working, resulting in light pollution. The heating devices of the above electric heaters either only have heat convection or heat radiation, and generally can only dissipate heat on one side or two sides, and the heat dissipation area is relatively small. In order to solve the above shortcomings, the utility model proposes a heating device with both heat convection and heat radiation, which can dissipate heat to multiple surfaces and has a large heat dissipation area, which significantly improves the heat dissipation efficiency of the heating device and enhances the heating and heat dissipation effects.

Chinese patent CN202425076U discloses a two-piece flat heating element, including a first support plate and a second support plate, and a spacer between the first support plate and the second support plate is provided with the first support plate and the second support plate. The fixed connection of the first flat heating element and the second flat heating element, the flat heating element can greatly increase the amount of far-infrared heat radiation. The two ends of the first flat heating element and the second flat heating element are respectively fixed with the first support plate and the second support plate by a fixing device, and the fixing device is a support set on the screw by a screw 6. The connecting rod, the first insulator and the second insulator are composed of the first flat heating element and the second flat heating element clamped between the corresponding first insulator and the second insulator, and one end of the supporting connecting rod is sleeved on the screw The other end is fixedly connected with the corresponding first support plate or the second support plate, and the screw, the first insulator and the second insulator are processed by ceramic material or other insulating materials.

In the above technical solution, there are only electric heating pipes on the front and back sides, which can only be regarded as double-sided heat dissipation, not multi-face heat dissipation. The heating element is fixed, and the first support plate and the second support plate of the heating element are not insulators. When the heating device is installed in the electric heater shell, it can only be connected and fixed with the first support plate and the second support plate. It will lead to the electric leakage problem of the whole electric heater, and bring certain potential safety hazards to users. According to the description of its scheme, it only has the function of heat radiation and heat dissipation, but not the function of heat dissipation by heat convection.

Utility model content

The utility model aims to solve one of the technical problems in the related art at least to a certain extent.

Therefore, an object of the utility model is to propose a heating unit for an electric heater with simple structure and functions of heat conduction and heat radiation.

According to the heating unit for an electric heater of the present utility model, the electric heater includes a base, a housing disposed on the base, and a heating unit disposed in the housing, and the outer surface of the side wall of the heating unit At least a predetermined distance from the inner surface of the side wall of the housing, the heating unit includes: a heating tube, the cross section of the heating tube is ring-shaped, and the outer surface of the circumferential side wall of the heating tube A far-infrared radiation coating is formed.

According to the heating unit for the electric heater of the utility model, the inner hollow channel of the heating tube can be used for heat conduction in the first direction, and the outer surface of the side wall of the heating tube has a far-infrared radiation coating, which can be used for the second direction. Directional heat radiation, simple structure, wide heat dissipation area and good heat dissipation effect.

In addition, the heating unit for electric heaters according to the above-mentioned embodiments of the present invention may also have the following additional technical features:

According to an example of the present utility model, the heating tube includes: a front heating sheet, the front surface of the front heating sheet has a far-infrared radiation coating; a rear heating sheet, the rear surface of the rear heating sheet has a far-infrared radiation coating Layer; left heating sheet, the left surface of the left heating sheet has a far-infrared radiation coating, the front edge of the left heating sheet is connected to the left edge of the front heating sheet and the rear edge of the left heating sheet is connected to the left edge of the left heating sheet The left edge of the rear heating sheet is connected; the right heating sheet, the right surface of the right heating sheet has a far-infrared radiation coating, the front edge of the right heating sheet is connected to the right edge of the front heating sheet and the right The rear edge of the heating sheet is connected to the right edge of the rear heating sheet.

According to an example of the present invention, the upper edge of any one of the front heating sheet, the rear heating sheet, the left heating sheet and the right heating sheet is configured as a groove, and the lower edge is configured as a Grooves match mating ribs.

According to an example of the present invention, the heating unit for an electric heater further includes an upper fixing bracket and a lower fixing bracket, the front edge of the upper fixing bracket is connected with the upper edge of the front heating sheet, the upper The rear edge of the fixing bracket is connected to the upper edge of the rear heating sheet, the left edge of the upper fixing bracket is connected to the upper edge of the left heating sheet, the right edge of the upper fixing bracket is connected to the upper edge of the right heating sheet The upper edge is connected, the front edge of the lower fixing bracket is connected with the lower edge of the front heating sheet, the rear edge of the lower fixing bracket is connected with the lower edge of the rear heating sheet, the left edge of the lower fixing bracket It is connected with the lower edge of the left heating sheet, and the right edge of the lower fixing bracket is connected with the lower edge of the right heating sheet.

According to an example of the present invention, the front edge of the upper fixing bracket has a front upper mounting hole, the rear edge of the upper fixing bracket has a rear upper mounting hole, the left edge of the upper fixing bracket has a left upper mounting hole, the The right edge of the upper fixing bracket has an upper right mounting hole, the front edge of the lower fixing bracket has a lower front mounting hole, the rear edge of the lower fixing bracket has a lower rear mounting hole, and the left edge of the lower fixing bracket has a lower left mounting hole. Mounting hole, the right edge of the lower fixing bracket has a right lower mounting hole, the upper edge of the front heating sheet has a front upper stud adapted to the front upper mounting hole and the lower edge of the front heating sheet There are front and lower studs adapted to the front and lower mounting holes, the upper edge of the rear heating sheet has rear upper studs that are adapted to the rear upper mounting hole, and the lower edge of the rear heating sheet There is a rear lower stud adapted to the rear lower mounting hole on the top, a left upper stud adapted to the left upper mounting hole on the upper edge of the left heating sheet, and a The lower left stud fits with the lower left mounting hole, the upper right stud fits with the upper right mounting hole on the upper edge of the right heating sheet and the lower edge of the rear heating sheet has a The lower right stud for the lower mounting hole fits.

According to an example of the present utility model, the inner peripheral edge of the upper fixing bracket has an upper front stop adapted to the upper end of the front heating sheet, and an upper rear stop adapted to the upper end of the rear heating sheet. block, the upper left stopper adapted to the upper end of the left heating sheet, the upper right stopper adapted to the upper end of the right heating sheet, and the inner peripheral edge of the lower fixing bracket has a The lower front stopper adapted to the lower end of the heating sheet, the lower rear stopper adapted to the lower end of the rear heating sheet, the lower left stopper adapted to the lower end of the left heating sheet, and the The lower right stop that the lower end of the right heating sheet is suitable for.

According to an example of the present invention, the heating unit for an electric heater further includes an upper connecting piece and a lower connecting piece, one end of the upper connecting piece is connected to the upper fixing bracket and the other end of the upper connecting piece One end is suitable for connecting with the shell of the electric heater, one end of the lower connecting piece is connected with the lower fixing bracket, and the other end of the lower connecting piece is suitable for connecting with the shell of the electric heater.

According to an example of the present utility model, both the upper connector and the lower connector are insulating connectors.

According to an example of the present invention, both the upper connector and the lower connector are plastic connectors or ceramic connectors.

According to an example of the present utility model, any one of the front heating sheet, the rear heating sheet, the left heating sheet, and the rear heating sheet includes: a heating sheet body; Inside the heating sheet body and through the heating sheet body in the left and right direction, the left end of the installation pipe protrudes from the left end of the heating sheet body to the left and the right end of the installation pipe extends out of the heating sheet to the right The right end of the body; magnesium oxide powder, the magnesium oxide powder is filled in the installation tube; a left plug body and a right plug body, the left plug body is connected to the left end of the installation tube to close the left end of the installation tube, The right plug body is connected with the right end of the installation pipe to close the right end of the installation pipe; a left protective sleeve and a right protective sleeve, the left protective sleeve is connected with the left plug body, and the right protective sleeve is connected with the right protective sleeve. The right plug body is connected; the left lead-out rod and the right lead-out rod, the left lead-out rod is arranged at the left end of the installation pipe and the left end of the left lead-out rod passes through the left plug body to the left to be accommodated in the left In the protective cover, the right lead-out rod is arranged at the right end of the installation pipe and the right end of the right lead-out rod passes through the right plug body to the right to be accommodated in the right protective cover; heating wire, the heating wire The wires are arranged in the installation tube and connected with the left lead-out rod and the right lead-out rod respectively; the left connection terminal and the right connection terminal, the left connection terminal is arranged in the left protective cover and connected with the left lead-out rod The rods are connected, and the right connection terminal is arranged in the right protective sleeve and connected with the right lead-out rod.

According to an example of the present invention, any one of the front heating sheet, the rear heating sheet, the left heating sheet, and the rear heating sheet further includes: a left heat shrinkable tube and a right heat shrinkable tube, so The left heat-shrinkable tube is set in the left protective sleeve to accommodate the protruding end of the left lead-out rod and the left terminal, and the right heat-shrinkable tube is set in the right protective sleeve to accommodate the right Lead out the protruding end of the rod and the right terminal.

According to an example of the present utility model, any one of the front heating sheet, the rear heating sheet, the left heating sheet, and the rear heating sheet further includes: a power cord connected to the left The connecting terminal or the right connecting terminal are connected.

According to an example of the present invention, the outer surface of the heat generating sheet body has heat dissipation ribs.

According to an example of the present invention, the heat generating sheet body is an aluminum alloy plate.

According to an example of the present utility model, the installation pipe is a metal pipe.

According to an example of the present utility model, the left plug body and the right plug body are both silicone plugs.

According to an example of the present invention, both the left protective cover and the right protective cover are silicone protective covers.

According to an example of the present utility model, the section of the heating tube is configured as a circle, an ellipse or a regular polygon.

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

Description of drawings

Fig. 1 is a schematic diagram of an electric heater according to an embodiment of the present invention.

Fig. 2 is a schematic diagram of a heating unit for an electric heater according to an embodiment of the present invention.

Fig. 3 is an exploded schematic diagram of a heating unit for an electric heater according to an embodiment of the present invention.

Fig. 4 is a schematic diagram of a heat generating piece used in a heat generating unit of an electric heater according to an embodiment of the present invention.

Fig. 5 is a vertical sectional view of Fig. 4 .

FIG. 6 is a partially enlarged schematic diagram of A in FIG. 4 .

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention, but should not be construed as limiting the present invention.

The heating unit for an electric heater according to the present invention will be described in detail below with reference to the accompanying drawings.

As shown in Figures 1 to 6, according to the utility model, the electric heater includes a base 200, a bottom plate 301, a front plate 302, a rear plate 303, a left side plate 304, a right side plate 305 and a top plate arranged on the base 200. The housing 300 constituted by the cover 306 and the heating unit 100 disposed in the housing 300 .

The outer surface of the side wall of the heat generating unit 100 is spaced apart from the inner surface of the side wall of the housing 300 by at least a predetermined distance.

The heating unit 100 includes: a heating cartridge 10 . The outer surface of the side wall of the heat generating cylinder 10 has a far-infrared radiation coating (not shown). The cross section of the heating tube 10 is configured as a circle, an ellipse or a regular polygon.

According to the heating unit for the electric heater of the utility model, the inner hollow channel of the heating tube can be used for heat conduction in the first direction, and the outer surface of the side wall of the heating tube has a far-infrared radiation coating, which can be used for the second direction. Directional heat radiation, simple structure, wide heat dissipation area and good heat dissipation effect.

Specifically, the heating unit 100 for an electric heater according to the present invention includes: a heating tube 10 . The outer surface of the side wall of the heat generating cylinder 10 has a far-infrared radiation coating (not shown).

The heating tube 10 includes: a front heating sheet 110 , a rear heating sheet 120 , a left heating sheet 130 and a right heating sheet 140 .

The front (ie, the direction indicated by the arrow front as shown in FIG. 2 ) surface of the front heat generating sheet 110 has a far-infrared radiation coating (not shown).

The rear (ie, the direction indicated by the arrow rear as shown in FIG. 2 ) surface of the rear heating sheet 120 has a far-infrared radiation coating (not shown).

The left (ie, the direction indicated by the arrow left as shown in FIG. 2 ) surface of the left heating sheet 130 has a far-infrared radiation coating (not shown). The front edge of the left heating sheet 130 is connected to the left edge of the front heating sheet 110 and the rear edge of the left heating sheet 130 is connected to the left edge of the rear heating sheet 120 .

The right (ie, the direction indicated by the arrow right as shown in FIG. 2 ) surface of the right heat generating sheet 140 has a far-infrared radiation coating (not shown). The front edge of the right heating sheet 140 is connected to the right edge of the front heating sheet 110 and the rear edge of the right heating sheet 140 is connected to the right edge of the rear heating sheet 120 .

The front heating sheet 110, the rear heating sheet 120, the left heating sheet 130 and the right heating sheet 140 form a quadrangular frame shape, and a hollow passage is formed in the quadrangular frame.

According to the heating unit for electric heaters of the present invention, the inner hollow channel of the heating tube can be used for heat conduction in the first direction (such as the up and down direction), and the outer surface of the side wall of the heating tube has a far-infrared radiation coating, It can be used for heat radiation in the second direction (for example, the direction from the center of the heating cylinder to the surroundings, that is, the horizontal direction), and has simple structure, wide heat dissipation area and good heat dissipation effect.

According to an example of the present invention, as shown in FIG. 2 , the heating unit 100 for an electric heater further includes an upper fixing bracket 150 and a lower fixing bracket 160 .

The front edge of the upper fixing bracket 150 is connected with the upper edge (that is, the direction indicated by the arrow shown in FIG. 2 ) of the front heating sheet 110 . The rear edge of the upper fixing bracket 150 is connected with the upper edge of the rear heating sheet 120 . The left edge of the upper fixing bracket 150 is connected with the upper edge of the left heating sheet 130 . The right edge of the upper fixing bracket 150 is connected with the upper edge of the right heating sheet 140 .

The front edge of the lower fixing bracket 160 is connected to the lower edge (ie, the direction indicated by the arrow down as shown in FIG. 2 ) of the front heating sheet 110 . The rear edge of the lower fixing bracket 160 is connected with the lower edge of the rear heating sheet 120 . The left edge of the lower fixing bracket 160 is connected with the lower edge of the left heating sheet 130 . The right edge of the lower fixing bracket 160 is connected with the lower edge of the right heating sheet 140 .

Specifically, the front edge of the upper fixed bracket 150 has a front upper mounting hole 1501, the rear edge of the upper fixed bracket 150 has a rear upper mounting hole 1502, the left edge of the upper fixed bracket 150 has a left upper mounting hole 1503, and the right side of the upper fixed bracket 150 There is an upper right mounting hole 1504 along the edge.

The front edge of the lower fixed bracket 160 has a front lower mounting hole 1601, the rear edge of the lower fixed bracket 160 has a rear lower mounting hole 1602, the left edge of the lower fixed bracket 160 has a left lower mounting hole 1603, and the right edge of the lower fixed bracket 160 has a right edge. Lower mounting holes 1604.

The upper edge of the front heating sheet 110 has a front upper stud 1101 adapted to the front upper mounting hole 1501 and the lower edge of the front heating sheet 110 has a front lower stud 1102 adapted to the front lower mounting hole 1502 .

The upper edge of the rear heating sheet 120 has a rear upper stud 1201 adapted to the rear upper mounting hole 1502 and the lower edge of the rear heating sheet 120 has a rear lower stud 1202 adapted to the rear lower mounting hole 1602 .

There is an upper left stud 1301 adapted to the upper left mounting hole 1503 on the upper edge of the left heating sheet 130 and a lower left stud 1302 adapted to the lower left mounting hole 1603 on the lower edge of the left heating sheet 130 .

There is an upper right stud 1401 adapted to the upper right mounting hole 1504 on the upper edge of the right heating sheet 140 and a lower right stud 1402 adapted to the lower right mounting hole 1604 on the lower edge of the rear heating sheet 140 .

That is, the studs of the heating sheet pass through the mounting holes and are connected to the fixing bracket, and are fastened by nuts.

According to an example of the present utility model, the inner peripheral edge of the upper fixing bracket 150 has an upper front stopper 1505 adapted to the upper end of the front heating sheet 110 and an upper rear stopper 1506 adapted to the upper end of the rear heating sheet 120 , an upper left stopper 1507 adapted to the upper end of the left heating sheet 130 , an upper right stopper 1508 adapted to the upper end of the right heating sheet 140 .

The inner peripheral edge of the lower fixing bracket 160 has a lower front stopper 1605 matched with the lower end of the front heating sheet 110, a lower rear stopper 1606 matched with the lower end of the rear heating sheet 120, and a lower rear stopper 1606 matched with the lower end of the left heating sheet 130. The matched lower left stopper 1607 and the lower right stopper 1608 matched with the lower end of the right heating sheet 140 . In this way, the position of the heat generating sheet on the fixing bracket can be limited, which further facilitates installation.

According to an example of the present invention, the heating unit 100 for an electric heater further includes an upper connecting piece 170 and a lower connecting piece 180 . One end of the upper connecting piece 170 is connected with the upper fixing bracket 150 and the other end of the upper connecting piece 170 is adapted to be connected with the shell of the electric heater. One end of the lower connecting piece 180 is connected with the lower fixing bracket 160 and the other end of the lower connecting piece 180 is adapted to be connected with the shell of the electric heater. Advantageously, both the upper connector 170 and the lower connector 180 are insulating connectors. Further, both the upper connector 170 and the lower connector 180 are plastic connectors or ceramic connectors. Thus, once the heating unit 100 used for the electric heater leaks electricity, it can prevent the leakage electricity from being transmitted to the shell of the electric heater, eliminate the potential safety hazard of the electric heater leakage electricity, and ensure the safety of users.

According to an example of the present invention, the spatial structures of the front heating sheet 110, the rear heating sheet 120, the left heating sheet 130 and the right heating sheet 140 may be consistent. The upper edge of any of them is configured as a groove and the lower edge is configured as a matching rib adapted to the groove. As shown in Figure 4, taking the front heating sheet 110 as an example, the upper (that is, the upper as shown in Figure 4) edge of the front heating sheet 110 is configured as a groove 110a and the lower (that is, the lower as shown in Figure 4) edge The matching rib 110b is configured to match the groove 110a. Thus, the front heating sheet 110, the rear heating sheet 120, the left heating sheet 130 and the right heating sheet 140 can be plugged together (that is, the groove 110a fits in the 110b) to form the heating tube 10, which is convenient for installation.

According to an example of the present invention, the spatial structures of the front heating sheet 110, the rear heating sheet 120, the left heating sheet 130 and the right heating sheet 140 may be consistent. Hereinafter, the exothermic sheet 110 is taken as an example for illustration.

As shown in Figure 5, the front heating sheet 110 includes: a heating sheet body 111, a mounting tube 112, magnesium oxide powder 113, a left plug body (not shown), a right plug body 114, a left protective cover (not shown), a right Protective cover 115, left lead-out rod (not shown), right lead-out rod 116, heating wire 117, left connection terminal (not shown), right connection terminal 118.

In detail, the heat sink body 110 may be an aluminum alloy plate with heat dissipation ribs on its outer surface. As mentioned earlier, the front or rear surface of the aluminum alloy plate has a far-infrared radiation coating. When the front heating sheet 110, the rear heating sheet 120, the left heating sheet 130 and the right heating sheet 140 are assembled into the heating cylinder 10, each of the front heating sheet 110, the rear heating sheet 120, the left heating sheet 130 and the right heating sheet 140 The surface with the far-infrared radiation coating faces outward. That is to say, when the heating tube 10 is located in the housing of the electric heater, each of the front heating sheet 110, the rear heating sheet 120, the left heating sheet 130 and the right heating sheet 140 has a surface with a far-infrared radiation coating All face the inner wall of the housing.

The installation tube 112 is disposed in the heat sink body 111 and passes through the heat sink body 111 along the left-right direction (ie, the left-right direction as shown in FIG. 5 ). The left end of the installation tube 112 protrudes leftward from the left end of the heat sink body 111 and the right end of the installation tube 112 extends rightward from the right end of the heat sink body 111 . The mounting tube 112 may be a metal tube.

Magnesium oxide powder 113 is filled in the installation pipe 112 .

The left plug body is connected to the left end of the installation pipe 112 to close the left end of the installation pipe 112 . The right plug body 114 is connected with the right end of the installation pipe 112 to close the right end of the installation pipe 112 . Both the left plug body and the right plug body 114 are silica gel plugs.

The left protective sleeve is connected with the left plug body. The right protective sleeve 115 is connected with the right plug body 114 . Both the left protective cover and the right protective cover 115 are silicone protective covers.

The left lead-out rod is arranged at the left end of the installation tube 112 and the left end of the left lead-out rod passes through the left plug body to the left to be accommodated in the left protective sleeve. The right lead-out rod 116 is arranged at the right end of the installation tube 112 and the right end of the right lead-out rod 116 passes through the right plug body 114 to the right to be accommodated in the right protective sleeve 115 .

The heating wire 117 is arranged in the installation tube 112 and connected with the left lead-out rod and the right lead-out rod 116 respectively.

The left connecting terminal is arranged in the left protective sleeve and connected with the left lead-out rod. The right connection terminal 118 is arranged in the right protective sleeve 115 and connected with the right lead-out rod 116 .

The front heating sheet 110 also includes: a left heat shrinkable tube (not shown) and a right heat shrinkable tube 119 . The left heat-shrinkable tube is arranged in the left protective sleeve to accommodate the protruding end of the left lead-out rod and the left connection terminal. The right heat-shrinkable tube 119 is arranged in the right protective sleeve 115 to accommodate the protruding end of the right lead-out rod 116 and the right terminal 118 .

The front heating sheet 110 further includes a power cord 1100 , and the power cord 1100 is connected to the left terminal or the right terminal 118 .

When the heating unit for the electric heater of the present invention is working, the cold air enters the housing through the bottom of the electric heater, and is heated by the front heating sheet 110, the rear heating sheet 120, the left heating sheet 130 and the right heating sheet 140 to become warm. wind. The warm air in the hollow channel conducts heat conduction in the up and down direction. And the warm air between the heating unit 100 for the electric heater and the housing, a part of the heat conduction in the up and down direction, and the other part is due to the far-infrared radiation coating on the outer surface of the heating unit 100 for the electric heater. The heat radiation in the substantially horizontal direction is carried out through the through-holes on the side walls of the housing. The heat dissipation area is wide and the heat dissipation is uniform.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial" The orientation or positional relationship indicated by , "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying the referred device Or elements must have a specific orientation, be constructed and operate in a specific orientation, and thus should not be construed as limiting the invention.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present utility model, "plurality" means two or more, unless otherwise specifically defined.

In this utility model, unless otherwise specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connection, or integration; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model according to specific situations.

In the present invention, unless otherwise clearly specified and limited, the first feature may be in direct contact with the first feature or the first feature and the second feature through an intermediary indirect contact. Moreover, "above", "above" and "above" the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "beneath" and "beneath" the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.

In the description of this specification, descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structures, materials or features are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without conflicting with each other.

Although the embodiments of the present invention have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and should not be construed as limitations of the present invention, and those skilled in the art are within the scope of the present invention. Variations, modifications, substitutions and variations can be made to the above-described embodiments.

Claims (18)

1. the heat-generating units for electric heater, the heat-generating units that described electric heater comprises base, is arranged on the housing on base and is located in described housing, the spaced apart at least preset distance of inner surface of the outer surface of the sidewall of described heat-generating units and the sidewall of described housing, it is characterized in that, described heat-generating units comprises:

Heating tube, the cross section of described Heating tube is annular, and the outer surface of the circumferential side wall of described Heating tube is formed with far infrared radiation coating.

2. the heat-generating units for electric heater according to claim 1, is characterized in that, described Heating tube comprises:

Front fever tablet, the front surface of described front fever tablet has far infrared radiation coating;

Rear fever tablet, the rear surface of described rear fever tablet has far infrared radiation coating;

Left fever tablet, the left surface of described left fever tablet has far infrared radiation coating, and the edge, front of described left fever tablet is connected with the left margin of described front fever tablet and the back edge of described left fever tablet is connected with the left margin of described rear fever tablet;

Right fever tablet, the right surface of described right fever tablet has far infrared radiation coating, and the edge, front of described right fever tablet is connected with the edge, the right of described front fever tablet and the back edge of described right fever tablet is connected with the edge, the right of described rear fever tablet.

3. the heat-generating units for electric heater according to claim 2, it is characterized in that, the upper edge of any one in described front fever tablet, described rear fever tablet, described left fever tablet and described right fever tablet is configured to groove and lower edge is configured to suitable with described groove coordinate muscle.

4. the heat-generating units for electric heater according to claim 2, it is characterized in that, also comprise fixed support and lower fixed support, the front of fixed support is along being connected with the upper edge of described front fever tablet, the back edge of fixed support is connected with the upper edge of described rear fever tablet, the left margin of fixed support is connected with the upper edge of described left fever tablet, the right of fixed support is along being connected with the upper edge of described right fever tablet, described lower support bracket fastened front is along being connected with the lower edge of described front fever tablet, described lower support bracket fastened back edge is connected with the lower edge of described rear fever tablet, described lower support bracket fastened left margin is connected with the lower edge of described left fever tablet, described lower support bracket fastened the right is along being connected with the lower edge of described right fever tablet.

5. the heat-generating units for electric heater according to claim 4, it is characterized in that, the front of fixed support is along having front upper installing hole, the back edge of fixed support has rear upper installing hole, the left margin of fixed support has upper left installing hole, the right of fixed support is along having upper right installing hole, described lower support bracket fastened front is along having front lower installing hole, described lower support bracket fastened back edge has rear lower installing hole, described lower support bracket fastened left margin has lower-left installing hole, described lower support bracket fastened the right is along having bottom right installing hole, the upper edge of described front fever tablet has with described front upper installing hole adaptation before upper stud and the lower edge of described front fever tablet has the front lower stud with described front lower installing hole adaptation, the upper edge of described rear fever tablet have with the rear upper stud of described rear upper installing hole adaptation and the lower edge of described rear fever tablet have the rear lower stud with described rear lower installing hole adaptation, the upper edge of described left fever tablet has with the upper left stud of described upper left installing hole adaptation and the lower edge of described left fever tablet has the lower-left stud with described lower-left installing hole adaptation, the upper edge of described right fever tablet has with the upper right stud of described upper right installing hole adaptation and the lower edge of described rear fever tablet has the bottom right stud with described bottom right installing hole adaptation.

6. the heat-generating units for electric heater according to claim 4, it is characterized in that, the inner peripheral of fixed support has the go forward backstop suitable with the upper end of described front fever tablet, with the upper rear backstop that the upper end of described rear fever tablet is suitable, with the upper left backstop that the upper end of described left fever tablet is suitable, with the upper right backstop that the upper end of described right fever tablet is suitable, described lower support bracket fastened inner peripheral has the lower front backstop suitable with the lower end of described front fever tablet, with the lower rear backstop that the lower end of described rear fever tablet is suitable, with the bottom left backstop that the lower end of described left fever tablet is suitable, with the bottom right backstop that the lower end of described right fever tablet is suitable.

7. the heat-generating units for electric heater according to claim 4, it is characterized in that, also comprise upper connector and lower connector, one end of described upper connector is connected with fixed support and the other end of described upper connector is suitable for being connected with the housing of electric heater, and one end of described lower connector is connected with described lower fixed support and the other end of described lower connector is suitable for being connected with the housing of electric heater.

8. the heat-generating units for electric heater according to claim 7, is characterized in that, described upper connector and described lower connector are insulated connecting piece.

9. the heat-generating units for electric heater according to claim 8, is characterized in that, described upper connector and described lower connector are plastic fastening or ceramic connecting piece.

10. the heat-generating units for electric heater according to any one of claim 2-9, is characterized in that, any one in described front fever tablet, described rear fever tablet, described left fever tablet and described rear fever tablet includes:

Fever tablet body;

Mounting pipe, described mounting pipe to be located in described fever tablet body and through described fever tablet body in left-right direction, and the left end of described mounting pipe stretches out the left end of described fever tablet body left and the right-hand member of described mounting pipe stretches out the right-hand member of described fever tablet body to the right;

Magnesia powder, described magnesia powder is filled in described mounting pipe;

Left cock body and right cock body, described left cock body is connected with the left end of closed described mounting pipe with the left end of described mounting pipe, described right cock body is connected with the right-hand member of closed described mounting pipe with the right-hand member of described mounting pipe;

Left protective sleeve and right protective sleeve, described left protective sleeve is connected with described left cock body, and described right protective sleeve is connected with described right cock body;

Left eduction rod and right eduction rod, described left eduction rod is located at the left end of described mounting pipe and the left end of described left eduction rod passes described left cock body left to be contained in described left protective sleeve, and described right eduction rod is located at the right-hand member of described mounting pipe and the right-hand member of described right eduction rod passes described right cock body to the right to be contained in described right protective sleeve;

Heating wire, described heating wire to be located in described mounting pipe and to be connected with described right eduction rod with described left eduction rod respectively;

Left binding post and right binding post, described left binding post to be located in described left protective sleeve and to be connected with described left eduction rod, and it is interior and be connected with described right eduction rod that described right binding post is located at described right protective sleeve.

11. heat-generating units for electric heater according to claim 10; it is characterized in that; any one in described front fever tablet, described rear fever tablet, described left fever tablet and described rear fever tablet all also comprises: left heat-shrinkable tube and right heat-shrinkable tube; described left heat-shrinkable tube is located to hold the external part of described left eduction rod and described left binding post in described left protective sleeve, and described right heat-shrinkable tube is located in described right protective sleeve to hold the external part of described right eduction rod and described right binding post.

12. heat-generating units for electric heater according to claim 11, it is characterized in that, any one in described front fever tablet, described rear fever tablet, described left fever tablet and described rear fever tablet all also comprises: power line, and described power line is connected with described left binding post or described right binding post.

13. heat-generating units for electric heater according to claim 10, is characterized in that, the outer surface of described fever tablet body have heat radiation convex stupefied.

14. heat-generating units for electric heater according to claim 10, is characterized in that, described fever tablet body is aluminium alloy plate.

15. heat-generating units for electric heater according to claim 10, is characterized in that, described mounting pipe is metal tube.

16. heat-generating units for electric heater according to claim 10, is characterized in that, described left cock body and described right cock body are silica gel plug.

17. heat-generating units for electric heater according to claim 10, is characterized in that, described left protective sleeve and described right protective sleeve are Silicone Case.

18. heat-generating units for electric heater according to claim 1, is characterized in that, the cross-sectional configuration of described Heating tube is circular, oval or regular polygon.