CN2655076Y

CN2655076Y - Electro-heater

Info

Publication number: CN2655076Y
Application number: CN 03253057
Authority: CN
Inventors: 王定国
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-09-28
Filing date: 2003-09-28
Publication date: 2004-11-10
Anticipated expiration: 2013-09-28

Abstract

The utility model relates to an electric space heater, comprising a heating box (1). A plurality of water inlets and outlets are arranged on the heating box (1) and connected with the heater circulating water pipes; a plurality of electric heating pipes are arranged in the heating box (1); the box wall made of monolayer random copolymer polypropylene (PPR) is taken as the outer wall and insulation layer of the heating box (1); a circulating pump (6) is arranged between the water inlet and outlet of the heating box (1); an expansion water tank (7) is arranged on the heating box (1); a fresh water inlet is arranged at the expansion water tank (7); the lower part of the expansion water tank is connected with pipes in front of the entrance of the circulating pump (6) by a plurality of connecting pipes (9). The utility model has the advantages of leaving out the insulation layer, reducing the heater volume, simplifying processing technology and shortening the cost combines the regular expansion tank and water filling tank into a whole body, which saves the heater volume greatly.

Description

Electric heating device

Technical field

The utility model relates to a kind of heating device, particularly a kind of electric heating device.

Background technology

Common electric heating device for preventing the thermal loss of heating cabinet, all needs to wrap heat-insulation layer in the heating cabinet outside, and the existence of heat-insulation layer makes the volume of heating device become big, and difficulty of processing increases the cost increase.

The volume of common heating case is bigger, as: 15 liters, make the heater volume very big, and heat insulation effect is bad.

Common electric heating device has expansion tank, and the water that adds thermal expansion is stored in the expansion tank, acts on singlely, also will establish water supply tank in addition, and two water tanks increase the volume of heating device.

Summary of the invention

The utility model has overcome the shortcoming of existing electric heating device, and the electric heating device that provides a kind of heating cabinet not have heat-insulation layer outward also provides a kind of volume less electric heating device, also provides a kind of security good, easy to operate electric heating device.

In order to achieve the above object, a kind of electric heating device of the present utility model, a kind of electric heating device, comprise heating cabinet, on heating cabinet, be provided with water inlet and delivery port, described water inlet, delivery port and warmer circulating water line join, be provided with electric heating tube in the heating cabinet, the heating cabinet tank wall of individual layer atactic copolymerized polypropene (PPR) is as the tank wall and the heat-insulation layer of described heating cabinet, between the water inlet of heating cabinet and delivery port, circulating pump is housed, the expansion water supply tank is arranged above heating cabinet, have the fresh water water supplement port on the described expansion water supply tank, the pipeline before the bottom of described expansion water supply tank and the inlet of circulating pump linked to each other by communicating pipe.

Electric heating device of the present utility model because its heating cabinet is made by atactic copolymerized polypropene (PPR), is a single layer structure, has saved heat-insulation layer, thereby has reduced the volume of heating device, has simplified processing technology, has reduced cost.

Electric heating device of the present utility model has reduced the volume of heating cabinet, does not have heat-insulation layer, and the expansion tank and the water supply tank of routine united two into one, and therefore, has reduced the volume of heating device greatly, has saved usage space, has reduced cost.

Electric heating device of the present utility model is controlled its work automatically by microcomputer chip, and is easy to operate, safe.

Description of drawings

Fig. 1 represents the structural representation of the utility model embodiment;

Fig. 2 represents the control structure block diagram of the utility model embodiment.

The 1--heating cabinet, 3--electric heating tube, 4--exhaust outlet, 5--air bleeding valve, 6--circulating pump, 7--expansion water supply tank, 9--communicating pipe.

The specific embodiment

With reference to accompanying drawing, will be described in detail the specific embodiment of the present utility model.

Electric heating device of the present utility model, heating cabinet 1 are that atactic copolymerized polypropene (PPR) synthesizing engineering plastic is processed once-forming by injection moulding, do not have weld seam on the casing, high temperature resistant, carry water temperature can reach 95 ℃, high pressure resistant, the withstand voltage 5Mpa that reaches, in light weight, excellent in cushion effect, and chemical resistance is good, and the volume of heating cabinet 1 is the 2-2.5 liter, because the thermal conductivity factor of PPR has only 0.23, so do not need heat-insulation layer outside heating cabinet 1.

U type or snake type electric heating tube 3 are arranged in heating cabinet 1, and described electric heating tube 3 is made by stainless steel, and smooth surface is less scaling.Be provided with exhaust outlet 4 on the top of heating cabinet 1, automatic exhaust steam valve 5 is housed on exhaust outlet 4, discharge the gas that produces in the pipeline outside the machine automatically; Circulating pump 6 is installed on circulating water line, water flows in circulating pump 6 moving systems, the delivery port and the circulating water line of expansion water supply tank 7 bottoms are connected with communicating pipe 9, the water that adds thermal expansion is stored in the expansion water supply tank 7, have water supplement port on the expansion water supply tank 7, can mend into fresh water from the external world, fresh water can enter water circulation system by communicating pipe 9 equally, described communicating pipe 9 be opened on the inlet of circulating pump 6 before.

Electric heating device of the present utility model, microcomputer chip is housed, in heating cabinet 1 and the indoor temperature sensor that all is equipped with, can be manually or room temperature is set automatically, microcomputer chip can be controlled the work of heating tube 3 and circulating pump 6 automatically by drive circuit, and be provided with overtemperature prote, low temperature anti-frost protection, anti-dry protection etc.; Liquid level sensor is housed on expansion tank, when heating device work lack of water, passes the signal to microcomputer chip by liquid level sensor, microcomputer chip is on LCD panel or by alarm prompting user moisturizing.

After the Electric heater energising start of the present utility model, at first promote the circulation of total system water by circulating pump 6, cold water is by water inlet pipe process heating cabinet 1, Fast Heating is also delivered to radiator or geothermal device by outlet pipe, and hot water is got back to boiler 1 behind heat abstractor, circulation repeatedly, reach setting value up to room temperature, microcomputer chip control automatically stops heating, closes circulating pump 6.When room temperature drops to setting value when following, machine is resumed work automatically.

Claims

1, a kind of electric heating device, comprise heating cabinet (1), on heating cabinet (1), be provided with water inlet and delivery port, described water inlet, delivery port and warmer circulating water line join, heating cabinet is provided with electric heating tube in (1), it is characterized in that, the heating cabinet tank wall of individual layer atactic copolymerized polypropene (PPR) is as the tank wall and the heat-insulation layer of described heating cabinet (1), between the water inlet of heating cabinet (1) and delivery port, circulating pump (6) is housed, in the top of heating cabinet (1) expansion water supply tank (7) is arranged, have the fresh water water supplement port on the described expansion water supply tank (7), the pipeline before the inlet of the bottom of described expansion water supply tank (7) and circulating pump (6) linked to each other by communicating pipe (9).

2, electric heating device according to claim 1, the volume that it is characterized in that described heating cabinet (1) is the 2-2.5 liter.

3, electric heating device according to claim 2 is characterized in that electric heating tube is stainless steel (3) electric heating tube of U type or snake type.

4, electric heating device according to claim 3 is characterized in that exhaust outlet (4) is arranged at the top of described heating cabinet (1), and air bleeding valve (5) is arranged on exhaust outlet (4).

5, electric heating device according to claim 4, it is characterized in that adopting microcomputerized control, control section comprises microcomputer chip, be contained in the heating cabinet (1) and indoor temperature sensor, be contained in the liquid level sensor on the expansion water supply tank (7), and the drive circuit of control circulating pump (6) and heating tube (3).

6, electric heating device according to claim 5 is characterized in that described control section also has LCD panel, alarm.