CN2199654Y

CN2199654Y - PTCR liquid heater

Info

Publication number: CN2199654Y
Application number: CN 94219330
Authority: CN
Inventors: 熊欣
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-09-04
Filing date: 1994-09-04
Publication date: 1995-05-31
Anticipated expiration: 2004-09-04

Abstract

The utility model relates to a domestic appliance, particularly a PTCR liquid heater which is provided with an outer housing which is formed by punching stainless steel or other metal materials which have excellent heat conducting performance. A plastic bracket is arranged in the inner cavity of the outer housing, and a plurality of PTCRs are accommodated in the hole cavities of the bracket. Conducting wires are embedded at two electrode plates which are tightly attached to both edges of the PTCRs, and the electrode plates and the outer housing are isolated by insulating pieces. The conducting wires pass through holes in the bracket core, and the conducting wires are led outside from hollow screw holes. The portions of the outer housing is corresponding to the PTCRs are bulged inwards to cause the electrode plates and the PTCRs to be contacted well. A heater is installed in a container for holding liquid. The heater is switched on, and the liquid can be heated. The PTCR liquid heater is suitable for heating water to be boiled, and for heating milk, coffee, etc.

Description

PTCR liquid heater

The utility model relates to a kind of household electrical appliance, and a kind of PTCR of employing that says so more specifically adds the heater of liquid such as hot water, milk, coffee.

Before the utility model was made, common other heated liquid such as water, milk, coffee, generally uses electric furnace, gas-cooker, electrothermal tube etc., and wherein the heat efficiency with electrothermal tube is the highest, as insulating pot; Insert with electrothermal tube and to boil water in the thermos etc.The weak point of electrothermal tube heating: the one, can not dry combustion method, insulating pot has not dryouied as having water or water, and electrothermal tube can burn out at once; Two are to use the life-span short, and the electrothermal tube in the insulating pot is generally about 2 years useful life; The 3rd, the rated power of electrothermal tube is constant all the time, and after water was boiled, the power of electrothermal tube can not change, therefore, and the waste electric energy.

Can not damage when task of the present utility model is to provide a kind of heat efficiency height, long service life, dry combustion method yet, can control the heating-up temperature of heated liquid.

For solving above-mentioned task, the utility model provides a kind of PTCR liquid heater, i.e. semistor heater.The structure of this heater is such, in the inner chamber that housing and end cap are containing, a support is set, and several PTCR put into the corresponding hole of support; The battery lead plate that is embedded with lead is close to the both sides of PTCR, and insulating trip is isolated battery lead plate and shell and end cap, and is not charged with the shell that guarantees heater; Being embedded in lead on the battery lead plate passes in the hole of the Kong Bingcong cored screw in the support core and draws; Housing bottom and end cap corresponding to the PTCR position respectively to PTCR side's projection, so that battery lead plate contacts with PTCR well; By cored screw this heater is fixed in the container that holding liquid uses, energized gets final product heating liquid.

The utility model is simple in structure; Adopt semistor (being PTCR) as calandria, safe and reliable, the flames of anger can not damage during dry combustion method yet; Long service life if not artificial damage, can be used for a long time; And because the characteristic of PTCR, the power of heater can change with the variation of fluid temperature, and when temperature surpassed setting, power can descend, and when temperature was lower than setting, power can increase, and can play insulation effect, saves energy again.

Below in conjunction with accompanying drawing the utility model is described in further detail:

Description of drawings:

Fig. 1 is the cutaway view of the utility model PTCR liquid heater.

Fig. 2 is that Figure 1A is to view (part).

Fig. 3 is the cutaway view of support (9).

Fig. 4 is the end view of Fig. 3.

Fig. 5, Fig. 6 are the end views of the other two kinds of structures of support (9).

As Fig. 1, Fig. 3, shown in Figure 4, the support made from insulating material such as plastics or bakelites (9) is arranged in the inner chamber that the housing (1) made with the good material punching press of heat conduction such as stainless steel or aluminium, copper and end cap (13) contained, the effect of support (9): the one, and a buffer action; The 2nd, play insulating effect.Between the outer rim (19) of support (9) and the support core (17) four circular holes (16) are arranged, the number in hole can several, as shown in Figure 6, and six circular holes; The shape in hole also can be fan-shaped, or other shapes, and as shown in Figure 5, being shaped as of hole (16) is fan-shaped.The shape of the shape of PTCR----semistor (10) and above-mentioned hole (16) is complementary, and holds to go in each hole.Two electrode plate made from conductor materials such as aluminium or copper (8,12) are close to the PTCR both sides, in two leads (5,6) difference intercalation electrode plates (8,12), pass from the hole (18) of support core (17), and draw from the hole (20) of hollow screw (4); Battery lead plate (8) and housing (1) are provided with insulating trip (2) at interior the end, are provided with insulating trip (11) between battery lead plate (12) and the end cap (13); Housing (1) bottom corresponding to the position of PTCR to PTCR side's annular projection (21), end cap (13) bottom corresponding to the position of PTCR to PTCR side's annular projection (22), to guarantee battery lead plate (8,12) and PTCR(10) contact well; Housing (1) flangikng part is contained (14) by the outer rim of end cap (13), prevents that heated liquid from infiltrating inner chamber; For considering connecting of heater and other container, the cored screw (4) with plane (15) stretches out (as shown in Figure 2) from the hole that housing (1) bottom and its end surface shape are complementary, and fixes with nut (3).

During use, heater is fixed in the container, outside hollow screw (4) propelling container, and makes it sealing.Add liquid in the container, as water, milk, coffee etc., making current can heat.

Claims

1, a kind of PTCR liquid heater, it is made up of shell, heating element, insulating material, power line etc., it is characterized in that housing (1) inner chamber is provided with support (9), between outer rim of support (19) and the support core (17) several holes (16) is arranged, PTCR is that semistor (10) is contained in wherein; The battery lead plate (8,12) that is embedded with lead (5,6) is close to the both sides of PTCR, and lead (5,6) passes from the hole (18) of support (17), and stretches out from the hole (20) of hollow screw (4); Battery lead plate (8) and housing (1) are provided with insulating trip (2) at interior the end, are provided with insulating trip (11) between battery lead plate (12) and the end cap (13); Housing (1) bottom and end cap (13), contact with PTCR well with the assurance battery lead plate respectively to PTCR side's projection (21,22) corresponding to the position of PTCR; Housing (1) flangikng is contained (14) by the outer rim of end cap (13); Hollow screw (4) with plane (15) stretches out from the hole that housing (1) bottom and its section configuration are complementary, and nut (3) is fixed.

2, PTCR liquid heater according to claim 1 is characterized in that shell (1) and end cap (13) adopt stainless steel to make, and also can make with the good material of heat conduction such as aluminium, copper.

3, PTCR liquid heater according to claim 1 is characterized in that support (9) adopts plastics to make, and also can make with insulating material such as bakelites.

4, PTCR liquid heater according to claim 1 is characterized in that the outer rim (19) of said support (9) and the hole (16) between the support core (17) are circular, also can be fan-shaped or other shapes.

5, PTCR liquid heater according to claim 1, it is characterized in that PTCR be semistor (10) shape will and the outer rim (19) of support (9) and the hole (16) between the support core (17) be complementary.