CN201126249Y

CN201126249Y - Tube plate type heater for electric water heater

Info

Publication number: CN201126249Y
Application number: CNU2007200589399U
Authority: CN
Inventors: 冯俊
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-10-30
Filing date: 2007-10-30
Publication date: 2008-10-01
Anticipated expiration: 2017-10-30

Abstract

The utility model discloses a pipe plate type heater for an electric water heater, belonging to the technical field of the electric water heater, comprising a heat exchange body and a radiation body, the heat exchange body is in shape of metal plate and provided with at least one fluid channel and at least one straight through hole/groove for placing the radiation body, the radiation body is inserted in the straight through hole/groove, both ends of the fluid channel is provided with pipe joints and formed by serial connection of straight channel sections and a curving channel section, the straight channel sections are two at least, the straight through hole/groove is provided beside the straight channel sections in parallel. The utility model has the following characteristics that: 1, smaller electric water heater can be manufactured according to the utility model; 2, the structure and manufacture are simple and the cost is low; 3, the fluid channel pipe is a whole consecutive pipe without welding points, in order that leakage phenomenon will not take place; 4, heat exchange structure of the heater is reasonable and has high heating efficiency; 5, the electric heating pipe does not contact with the fluid, which is to say, erosion and scale are not formed, the service life is longer; 6, the electric heating pipe adopts U-shaped pipe or straight pipe, so manufacturing cost is low and quality is more steady.

Description

The tube-sheet type heater that is used for electric heater

Technical field

The utility model relates to the electric heater technical field.Especially the heater of electric heater.

Background technology

The heater of existing quick electric water heater is made of housing and electrothermal tube; electrothermal tube inserts in the housing; one end of housing is provided with water inlet and connects water inlet pipe; the other end of housing is provided with delivery port and connects outlet pipe; cold water enters in the housing electrothermal tube with heat from water inlet pipe and carries out becoming after the heat exchange hot water and flow out from outlet pipe and use for the user; heating-up temperature for control heater; control temperature inductor and overtemperature protection temperature inductor are set outside its housing usually; these temperature inductors are electrically connected with control circuit, realize temperature and protection control automatically by control circuit again.

There is following deficiency in present electric heater heater:

1. heater is cylindrical, and the water heater bodily form is thicker.

Time of in heater, stopping of current short, the convection heat transfer' heat-transfer by convection effect is relatively poor, current are during through heater, the water of inner different parts forms the obvious temperature difference, influences the heat exchanger effectiveness of heater.

3. more water is arranged in the heater, make firing rate slower.

4. the housing of heater and electrothermal tube are metal material, and solder joint is more, and it is difficult not only to make, and easily leaks.

Heater housing and electrothermal tube be welded into an integral body, scrap the cost height if electrothermal tube damages then whole heater.

6. the electrothermal tube of heater adopts U-shaped or spirality electrothermal tube, electrothermal tube manufacturing process complexity, and electric property is poor than straight tube.

7. the electrothermal tube long period of soaking of heater easily produces incrustation scale in water, easily is corroded, and causes the thermal efficiency to reduce, even breakdown.

(application number is: 200520073249.1) " a kind of electric heater " proposes the combine technical scheme of the heater that constitutes electric heater of the absorber plate that is made of the rectangular metal heat absorption tube in cross section and tabular electric heating body to Chinese patent, this scheme has overcome the shortcoming of above-mentioned electric heater heater fully, its weak point is that absorber plate and flat electric heating element structure are complicated, the manufacturing cost height.

The utility model content

The purpose of this utility model is that design is a kind of simple in structure, makes easily, volume is little, cost is low, and the life-span is long, safe in utilization, electric heater heater for ease of maintenaince.

The utility model is realized by following technical solution:

A kind of tube-sheet type heater that is used for electric heater, include heat exchange body and heater, it is characterized in that: the profile of heat exchange body is a metal plate-like, it is provided with at least 1 fluid passage and at least 1 clear opening/groove of placing heater, heater is plugged in clear opening/groove, and pipe joint is established at the two ends, fluid passage.

The fluid passage is usually designed to snakelike shape: the fluid passage is connected in series by straight way section and bend section and forms, and has 2 sections straight way sections at least.

Be convenient and make that the straight section road is positioned at metallic plate inside, in establish the bend pipe of bend section or termination and refute and be connected to the metallic plate end, each bend section is tightly connected by bend pipe or termination and 2 straight section road ends.

Clear opening/groove is parallel to be located at by the straight section road of fluid passage, and its cross section and heater profile are complementary.

The utility model has following characteristics:

1. the utility model can be made smaller and more exquisite electric heater.

2. simple in structure, easy to manufacture, cost is low.

3. fluid channel tube is that complete no solder joint is managed continuously, can not produce leakage phenomenon.

4. the heat exchange structure of heater is more reasonable, and the fluid heat exchange is faster, and is more even, and the thermal efficiency is higher.

5. electrothermal tube does not contact with fluid, can not corrode, and can not generate incrustation scale, and the life-span is longer.

6. because electrothermal tube adopts U-shaped pipe or straight tube, and manufacture process can realize standardization, automation, not only cost is low, and quality is more stable.

7. if interior certain the root electrothermal tube of heater damages, as long as change damaged electrothermal tube, heater still can use, maintenance, and use cost is low, and replacing is very easy.

Description of drawings

Fig. 1 is one of outline drawing of the present utility model;

Fig. 2 is Fig. 1 internal anatomy.

Fig. 3 is two of an outline drawing of the present utility model;

Fig. 4 is the partial sectional view of Fig. 3.

Fig. 5 is three of an outline drawing of the present utility model;

Fig. 6 is Fig. 5 internal anatomy.

Fig. 7 is four of an outline drawing of the present utility model;

Fig. 8 is Fig. 7 internal anatomy.

Fig. 9 is an another kind of heat exchange body structure schematic diagram of the present utility model.

The specific embodiment

Embodiment one

With reference to figure 1 and Fig. 2, (Fig. 1 is a stereogram to a kind of tube-sheet type heater that is used for electric heater that the utility model proposes, Fig. 2 is an internal anatomy), it includes heat exchange body 1 and heater 2, it is characterized in that: the profile of heat exchange body 1 is a metal plate-like, it is provided with 1 fluid passage 11 and 5 clear openings 12 of placing heater 2, and heater 2 is plugged in the clear opening 12, and

pipe joint

3,4 is established at 11 two ends, fluid passage.

Fluid passage 11 is designed to snakelike shape: fluid passage 11 is connected in series by straight way section 111 and bend section 112 and forms, and present embodiment has 6 sections straight way sections 111, and each bend section 112 is connected with adjacent 2 straight section roads 111.

Embodiment two

With reference to figure 3 and Fig. 4, the another kind that the utility model proposes is used for the tube-sheet type heater (Fig. 3 is a stereogram, and Fig. 4 is an internal anatomy) of electric heater, and its structure and embodiment one are basic identical, and different is to change clear opening 12 into direct through groove 13.

Embodiment three

In conjunction with reference to figure 5 and Fig. 6, another kind of the present utility model is used for the tube-sheet type heater of electric heater, and (Fig. 5 is a stereogram, Fig. 6 is an internal anatomy), it includes heat exchange body 1 and heater 2, the profile of heat exchange body 1 is a metal plate-like, it is provided with 1 fluid passage and 5 clear openings 12 of placing heater 2, heater 2 is plugged in the clear opening 12, pipe joint 3 is established at the two ends, fluid passage, 4, being connected in series forms by straight way section 111 and bend section (external bend pipe 113) in the fluid passage, 6 sections straight way sections 111 are arranged, straight way section 111 and clear opening 12 are positioned at heat exchange body 1, this heat exchange body 1 can form behind the section bar again that cutting gets by the technology of drawing, in establish the bend pipe 113 of bend section two ends insert adjacent two straight way sections, 111 ports 6 sections straight way sections 111 connected into 1 fluid passage.

Embodiment four

With reference to figure 7 and Fig. 8, the another kind that the utility model proposes is used for the tube-sheet type heater (Fig. 7 is a stereogram, and Fig. 8 is an internal anatomy) of electric heater, and its structure and embodiment three are basic identical, and different is to change clear opening 12 into direct through groove 13.

Embodiment five

With reference to figure 9, the another kind that the utility model proposes is used for the tube-sheet type heater of electric heater, its structure is identical with embodiment one or embodiment two, different is that the heat exchange body is to be formed by connecting by straight-through pipeline section 10 and

bend loss

114 and 115, straight-through pipeline section 10 includes the straight way section 111 and the big portion of clear opening 12 (or direct through groove 13) of fluid passage, bend loss 114 includes fluid passage terminal part and bend section 112 and clear opening 12 (or direct through groove 13) end, bend loss 115 includes the bend section 112 and clear opening 12 (or direct through groove 13) end of fluid passage, parallel straight way section 111 sides of being located at the fluid passage of clear opening 12 (or direct through groove 13), during use, heater is plugged in the clear opening 12 (also can be direct through groove 13), and pipe joint 3 is established at the two ends, fluid passage, 4 (as Fig. 1 or shown in Figure 3)

Straight-through pipeline section 10 can form behind the section bar again that cutting get by the technology of drawing, and

bend loss

114 and 115 can bond to

bend loss

114 and 115 the two ends formation heat exchange body of straight-through pipeline section 10 then by the extrusion process manufacturing.

The shape of profile of the present utility model and fluid passage is flexible design as required, for example: the fluid passage in the layout of heat exchange body inside except snakelike, can also be circular discs web-like, square coil shape etc., the cross section of fluid passage is except circle, can also be rectangle, square, oval, trapezoidal or irregular shape etc., the position of the length of fluid passage and hop count, clear opening/groove and quantity also come to determine as required.

Claims

1. tube-sheet type heater that is used for electric heater, include heat exchange body and heater, it is characterized in that: the profile of heat exchange body is a metal plate-like, it is provided with at least 1 fluid passage and at least 1 clear opening/groove of placing heater, heater is plugged in clear opening/groove, and pipe joint is established at the two ends, fluid passage.

2. tube-sheet type heater as claimed in claim 1 is characterized in that described fluid channel design becomes snakelike shape: the fluid passage is connected in series by straight way section and bend section and forms, and has 2 sections straight way sections at least.

3. tube-sheet type heater as claimed in claim 2 is characterized in that: the straight section road is positioned at metallic plate inside, in establish the bend pipe of bend section or termination and refute and be connected to the metallic plate end, each bend section is tightly connected by bend pipe or termination and 2 straight section road ends.

4. as claim 1 or 2 or 3 described tube-sheet type heaters, it is characterized in that: clear opening/groove is parallel to be located at by the straight section road of fluid passage, and its cross section and heater profile are complementary.