CN102353145A

CN102353145A - Electric heating device

Info

Publication number: CN102353145A
Application number: CN2011102557783A
Authority: CN
Inventors: 王荐品
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-08-25
Filing date: 2011-08-25
Publication date: 2012-02-15

Abstract

The invention relates to an electric heating device, which comprises an electric heating body (2) and is characterized by also comprising a base (1), wherein a water channel is arranged in the base (1), and the base is provided with a water inlet (14) and a water outlet (15) which are communicated with the water channel; and the electric heating body (2) can ensure that water can be accommodated in the water channel in such a way that water can circulate in the water channel. Compared with the prior art, the electric heating device disclosed by the invention has the advantages that: water current is directly heated by the electric heating body by directly arranging the electric heating body in the water channel, therefore the heat loss caused by indirect heating of a heat conductor in the prior art is avoided, and the water heating speed is fast.

Description

A kind of electric calorifie installation

Technical field

The present invention relates to a kind of electric calorifie installation, can be used for products such as coffee machine, flatiron and water dispenser.

Background technology

Electric heating monolithics such as coffee machine are provided with electric heater unit usually, cold water are heated to be the hot water of uniform temperature and even the mixture of steam and water is directly infused coffee, to obtain desirable mouthfeel.The electric heater unit that existing coffee machine uses generally includes electric heating element and the metal heat-conducting body that is connected with circuit; Be provided with water stream channel in the metal heat-conducting body, said electric heating element also is arranged in the metal heat-conducting body or connects the metal heat-conducting body.Generate heat to the heating of metal heat carrier through electric heating element during use, thus the current in the flow heated water passage.Like the patent No. is that ZL200720051798.8 disclosed " heater of coffee machine ", publication number are CN101810440A disclosed " heater of coffee machine ", or the like, thereby all be to add the hot flow heated water through electric heating element.But existing these structures; The caloric requirement that electric heating element distributed is transmitted through heat carrier; In the transmittance process; The high problem of the energy consumption that thermal losses brought of heat carrier self inevitably; Simultaneously; Come the indirect current through the such parts of heat carrier, firing rate is also slower.

Summary of the invention

Technical problem to be solved by this invention is that the present situation that is directed against prior art provides a kind of hot water speed the fast and little electric calorifie installation of energy consumption loss.

The present invention solves the problems of the technologies described above the technical scheme that is adopted: this electric calorifie installation; Comprise electric heating element; It is characterized in that also comprising base, be provided with water stream channel in the said base, said base is provided with water inlet and the delivery port that is communicated with said water stream channel; Described electric heating element is contained in the described water stream channel can guarantee the mode that water can circulate in this water stream channel.

Preferably, said electric heating element has at least and has between the internal perisporium of part perisporium and said water stream channel at interval to form the gap that water supply stream passes through.

Said electric heating element is strip and is embedded in said water stream channel along the length direction of water stream channel, and electric heating element just can arbitrarily not rock in water stream channel like this, has guaranteed security.

The present invention is set directly at electric heating element in the water stream channel, make the direct flow heated water of electric heating element, the thermal loss that is brought through the heat carrier indirect in the prior art of having avoided, and firing rate is fast.

Preferably, can be provided with a plurality of current shuntings that are parallel to each other in the said base, and the corresponding end end to end in adjacent current shunting is ganged up each other to constitute the water stream channel in unidirectional each the current shunting of flowing through successively of stream of supplying water; Be equipped with electric heating element in each current shunting, and the connection parallel with one another of these electric heating elements.This structure can provide hot water or water, the vapour mixture of higher temperature in the outlet of water stream channel.

Consider the difficulty of each parts manufacturing and the conveniency of finished product assembling, each described current shunting can connect along the length direction of said base and be provided with, and the two ends of said base are equipped with the end cap in the said current of sealing shunting; The corresponding respectively initial current shunting of the entrance and exit of said water stream channel is arranged on the sidewall of said base with terminal current shunting.

As the further improvement of above-mentioned scenarios, this electric calorifie installation can also comprise that one can respond to the temperature in the said water stream channel and can when overheated, cut off the overtemperature protection system that is communicated with said electric heating element circuit.Through the design of overtemperature protection system, can effectively protect the safety in utilization of electric calorifie installation, and prolong the service life of this electric calorifie installation and coffee machine.

In the above-mentioned scenarios, described base can adopt the heat-insulating material preparation, to avoid the loss of heat energy better.If adopt the heat-insulating material preparation, described overtemperature protection system can comprise the control circuit that induction end is arranged on the temperature sensor in the water stream channel and is connected with this temperature sensor and can control the switching of electric heating element circuit.Perhaps,

Described base is the Heat Conduction Material preparation, and the part perisporium of said electric heating element contacts with the internal perisporium of said water stream channel; Described overtemperature protection system is to be arranged on the temperature detect switch (TDS) that can respond to said base temperature on the said base outer wall.Though the base in this structure can lose some heats a little, the thermal loss of the prior art of comparing, it can be ignored, and the low cost of manufacture of product.

Preferably, described temperature detect switch (TDS) can be arranged in the heat conduction shell, and this heat conduction shell is arranged on the outer wall of said base.

Compared with prior art, the present invention makes the direct flow heated water of electric heating element through electric heating element is set directly in the water stream channel, the thermal loss that is brought through the heat carrier indirect in the prior art of having avoided, and hot water speed is fast.

Description of drawings

Fig. 1 is the schematic perspective view of embodiment of the invention assembly structure;

Fig. 2 is the schematic perspective view of embodiment of the invention decomposition texture;

Fig. 3 is the longitudinal sectional view of base and electric heating element assembly structure in the embodiment of the invention;

Fig. 4 is the transverse sectional view of base and electric heating element assembly structure in the embodiment of the invention;

Fig. 5 is the longitudinal sectional view of base in the embodiment of the invention;

Fig. 6 is the perspective view of the end cap and the base of another kind of structure in the embodiment of the invention.

The specific embodiment

Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.

To shown in Figure 5, this electric calorifie installation comprises like Fig. 1:

Base 1; The preparation of employing metal material; Be provided with two in the base and connect base length direction and the first current shunting 11 that be parallel to each other and the second current shunting 12; Be provided with interface channel 13 between the tail end in the inherent first current shunting 11 of base and the head end in the second current shunting 12, current flow into the second current shunting 12 through this interface channel 13 from the first current shunting 11.The water stream channel that the first current shunting 11 that is connected in series mutually through interface channel 13 and the second current shunting 12 constitute present embodiments.The quantity in current shunting can be come concrete design according to the requirement of heating power and the size of base, can be one, also can be three or more a plurality of.When being three or when more a plurality of, the head end and the tail end in adjacent current shunting are all ganged up through interface channel successively, constitute the unidirectional water stream channel through each current shunting successively of current.Here, the head end in each current shunting and tail end are that the order of flowing through according to current defines.Head end corresponding to the first current shunting 11 is provided with flow inlet 14 on the sidewall of base, on the sidewall of base, be provided with water export 15 corresponding to the tail end in the second current shunting 12.The cross section in each current shunting is roughly circular configuration in the present embodiment, and the relative partial sidewall of this circular configuration is recessed dorsad goes out.

Electric heating element 2 is provided with 2, two electric heating elements of two electric heating elements corresponding to the current shunting and is connected in parallel in the heater circuit; Each electric heating element 2 is plugged in respectively in the corresponding current shunting.The cross section of electric heating element 2 is the suitable circular configuration in longitudinal section in diameter and current shunting; The electric heating element inserting is in the current shunting time; The internal perisporium in current shunting goes out except that recessed dorsad that part is all to contact with the perisporium of electric heating element, so that the temperature in the base ability accurate response water outlet flow point road.Recessed dorsad in electric heating element 2 and the current shunting goes out the space 16 that part formation water supply stream passes through.

The cross section in above-mentioned current shunting can also be other structure, and design principle is that the inner peripheral portion in electric heating element and current shunting contacts, and part is provided with to form the space that water supply stream passes through at interval.

Overtemperature protection system 4 comprises heat conduction shell 41 and the temperature detect switch (TDS) (not shown) that is arranged in the housing 41.Housing is fixed on the outer wall of base through screw, thereby temperature detect switch (TDS) is connected the working condition of the break-make control electric heating element 2 that is used to control heater circuit on the heater circuit.

End cap 3 has two, is separately positioned on the two ends of base 1, is used to seal two current shuntings; End cap in the present embodiment is an one, is provided with the hole 31 that two power supply hot body connecting lines pass corresponding to electric heating element 2 on it, is provided with sealing ring 32 between water stream channel and the corresponding end cap 3; As illustrated in fig. 1 and 2.Shown in Figure 6 is another kind of end cover structure, i.e. in corresponding end cap in each current shunting, this end cap and the port that is plugged in corresponding water stream channel, and between end cap and the water stream channel sealing ring is set.

During use; Current to be heated get into first water stream channel 11 from flow inlet 14; Just flowed backward in space 16 by electric heating element 2 heating edge; Get into second water stream channel 12 through interface channel 13 then, again by the heating of the electric heating element in second water stream channel, when current advance to second water stream channel terminal; The heated temperature of water is very high; Be hot water and steam mixture this moment, flows out from water export 15 then, supplies to use.

When running into special circumstances, during the electric heating element dry combustion method, the heat that this moment, electric heating element distributed is delivered on the housing 41 through base 1; When reaching the temperature that temperature detect switch (TDS) sets, the continuation dry combustion method of electric heating element has been avoided in the temperature detect switch (TDS) automatic disconnection; Effectively guaranteed safe in utilizationly, prolonged service life.

Claims

1. an electric calorifie installation comprises electric heating element (2), it is characterized in that: also comprise base (1), said base is provided with water stream channel in (1), and said base is provided with water inlet (14) and the delivery port (15) that is communicated with said water stream channel; Described electric heating element (2) is contained in the described water stream channel can guarantee the mode that water can circulate in this water stream channel.

2. electric calorifie installation according to claim 1 is characterized in that: said electric heating element has at least and has between the internal perisporium of part perisporium and said water stream channel at interval to form the gap (16) that water supply stream passes through.

3. electric calorifie installation according to claim 2 is characterized in that: said electric heating element is strip and is embedded in said water stream channel along the length direction of water stream channel.

4. electric calorifie installation according to claim 1; It is characterized in that being provided with a plurality of current shuntings that are parallel to each other in the said base (1), and the corresponding end end to end in adjacent current shunting is ganged up to constitute the water stream channel in unidirectional each the current shunting of flowing through successively of stream of supplying water each other; Be equipped with electric heating element (2) in each current shunting, and these electric heating elements (2) connection parallel with one another.

5. electric calorifie installation according to claim 4 is characterized in that each described current shunting connects setting along the length direction of said base, and the two ends of said base are equipped with the end cap (3) in the said current of sealing shunting; The corresponding respectively initial current shunting of inlet of said water stream channel (14) and outlet (15) is arranged on the sidewall of said base with terminal current shunting.

6. according to any described electric calorifie installation of claim in the claim 1～5, it is characterized in that this electric calorifie installation comprises that also one can respond to the temperature in the said water stream channel and can when overheated, cut off the overtemperature protection system (4) that is communicated with said electric heating element circuit.

7. electric calorifie installation according to claim 6 is characterized in that: described base (1) is the Heat Conduction Material preparation; Described overtemperature protection system (4) is for being arranged on the temperature detect switch (TDS) that can respond to said base temperature on the said base outer wall.

8. electric calorifie installation according to claim 7 is characterized in that described temperature detect switch (TDS) is arranged in the heat conduction shell (41), and this heat conduction shell (41) is arranged on the outer wall of said base.