CN204231678U - Eliminate the device of heater charge inducing - Google Patents
Eliminate the device of heater charge inducing Download PDFInfo
- Publication number
- CN204231678U CN204231678U CN201420355028.2U CN201420355028U CN204231678U CN 204231678 U CN204231678 U CN 204231678U CN 201420355028 U CN201420355028 U CN 201420355028U CN 204231678 U CN204231678 U CN 204231678U
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- phase
- heater
- pole double
- circuit
- throw relay
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Abstract
The utility model discloses a kind of device eliminating heater charge inducing, it arranges the device of a control unit and a kiss the earth, the device of kiss the earth is connected to the ground end of control unit as control circuit, the voltage of two phase lines relative to ground end of civil power input power is detected again respectively by control unit, the voltage of two phase lines of gained is judged again by control unit, that phase line that voltage is high is judged to be L phase, and that phase line that voltage is low is judged to be N phase; Finally will be judged to be that the phase line of N phase is held with being switched to by control circuit, eliminate solvent to the charge inducing on ground, guarantee the safety of the person.Compared with prior art, the utility model method only initially need be done in energising and once switch, and detecting the voltage of two phase lines respectively, when after selected N phase, just without the need to switching two phase lines, not affecting the normal work of heater again.The utility model eliminates the device of heater charge inducing, and the first single-pole double-throw relay of its control unit and the second single-pole double-throw relay all only do and once switch, and not easily damaged, useful life is longer.
Description
Technical field
The utility model relates to heater, is specifically related to a kind of device eliminating heater charge inducing.
Background technology
When electric heater, Pediluvium apparatus etc. relate to water or use, people knows from experience the heater touching water, because safety or structure problem, the power supply input of a lot of heater only has two heart yearns (i.e. L phase, N phase), during use, liquid can produce induced electricity to ground, and this induced electricity brings certain potential safety hazard to user.
Chinese utility model patent discloses a kind of Pediluvium apparatus with eliminating induced electricity function, this Pediluvium apparatus includes Pediluvium apparatus housing and heater, bridge circuit is provided with in Pediluvium apparatus housing, described bridge circuit comprises four relays, wherein connect between two more in parallel, two ends fulcrum in parallel connects with external live wire and zero line respectively, is connected in the two ends of heater in the middle of the relay of upper and lower two series connection respectively, when the relay operating state of upper and lower two series connection respectively is: close, open; Open, close, now heater upper end is zero line, and lower end is live wire; When the relay operating state of upper and lower two series connection respectively is: open, close; Closed, unlatching, now heater upper end is live wire, and lower end is zero line, and described relay switches by above-mentioned two kinds of modes.Due to the live wire of Pediluvium apparatus and zero line are carried out place-exchange, make the positive and negative counteracting of the electric charge of generation, eliminate the induced electricity that Pediluvium apparatus produces, solve the potential safety hazard because induced electricity produces.
But above-mentioned this Pediluvium apparatus, during use, relay needs not stop to switch between L phase, N phase, and the contact of relay is vulnerable, and mechanical structure is tired, and useful life is shorter.And because power supply ceaselessly switches, cause heater cisco unity malfunction, heating time is lost, and the efficiency of heating surface is lower.
Utility model content
The purpose of this utility model is to provide a kind of device eliminating heater charge inducing, and it can when not affecting the charge inducing effectively eliminating heater heater normally works.
Another object of the present utility model is to provide a kind of device eliminating heater charge inducing, and it can when not affecting the charge inducing effectively eliminating heater heater normally works, and useful life is longer.
To achieve these goals, the utility model adopts following technical scheme:
Eliminate the device of heater charge inducing, comprise the device of a control unit and a kiss the earth, the device of described kiss the earth is connected to the ground end of described control unit as described control circuit;
Described control unit comprises power circuit, the first single-pole double-throw relay and control circuit thereof, the second single-pole double-throw relay and control circuit thereof, rectification circuit, dividing potential drop, AD sample circuit, and single-chip microcomputer;
The input of described power circuit is connected in two phase lines of civil power, and the output of described power circuit is connected to described single-chip microcomputer, for described single-chip microcomputer provides working power;
The output of described single-chip microcomputer is connected respectively to the control circuit of described first single-pole double-throw relay and the control circuit of described second single-pole double-throw relay;
The normal-closed end of described first single-pole double-throw relay and normal beginning are connected to two phase lines of civil power respectively, the common port of described first single-pole double-throw relay is connected to the Chang Kaiduan of described second single-pole double-throw relay and the input of described rectification circuit respectively, the normal-closed end of described second single-pole double-throw relay is connected to the earth terminal of described rectification circuit, and the common port of described second single-pole double-throw relay is connected to be held describedly; The output of described rectification circuit is connected to the input of described single-chip microcomputer by described dividing potential drop, AD sample circuit.
The heater of heater comprises the inner insulating layer, metal tube, middle insulating barrier and the external insulation layer that adhere to successively from the inside to the outside, and heater coil is located between described middle insulating barrier and external insulation layer around dish, and the two ends of described inner insulating layer are connected to pipeline; The below of described heater is provided with in container-like and have the medium of certain dielectric constant, and the bottom of described medium and earth surface, and described Media Contents receives the solvent with certain dielectric constant, and described pipeline stretches in described solvent respectively; Described metal tube, described inner insulating layer, described solvent and described medium form the device of described kiss the earth, hold describedly and are connected by wire between described metal tube.
The bottom surface of described medium is plane, with ground reliable contacts.
After adopting such scheme, the utility model eliminates the device of heater charge inducing, the device of one control unit and the reliable kiss the earth of an energy is set, the device of kiss the earth is connected to the ground end of control unit as control circuit, the voltage of two phase lines relative to ground end of civil power input power is detected again respectively by control unit, judged the voltage of two phase lines of gained again by control unit, that phase line that voltage is high is judged to be L phase, and that phase line that voltage is low is judged to be N phase; Finally will be judged to be that the phase line of N phase is held with being switched to by control circuit, eliminate solvent to the charge inducing on ground, guarantee the safety of the person.Compared with prior art, the utility model method only initially need be done in energising and once switch, and detecting the voltage of two phase lines respectively, when after selected N phase, just without the need to switching two phase lines, not affecting the normal work of heater again.
The utility model eliminates the device of heater charge inducing, and the first single-pole double-throw relay of its control unit and the second single-pole double-throw relay all only do and once switch, and not easily damaged, useful life is longer.
The device of kiss the earth of the present utility model is by metal tube, inner insulating layer, solvent and medium are formed, when control unit is doing L phase or N phase is selected, terminate to metal tube and pass through inner insulating layer, solvent and medium are connected to ground, be used as the measure loop of L phase or N phase, it is weakened that ground end passes to surface process voltage through medium, finally end will well below civil power with L or N phase, because of L relatively terminal voltage be far longer than the voltage that N relatively holds, L phase or N phase is distinguished with this, metal tube is connected to when the N phase after selection is held with passing through, the charge inducing of solvent to ground can be eliminated, guarantee the safety of the person.
Device of the present utility model is applicable to any to paddle and human body can touch the heater of water, and it utilizes the feature of product structure, and the device manufacturing a reliable kiss the earth is used as sampled point and is carried out identifying phase conductor, and N phase is held with being switched to the most at last, eliminates charge inducing.
Accompanying drawing explanation
Fig. 1 is schematic block circuit diagram of the present utility model;
Fig. 2 is the structural representation of heater in the utility model.
Embodiment
The device of elimination heater charge inducing of the present utility model, as shown in Figure 2, comprises the device of a control unit 500 and a kiss the earth, and the device of described kiss the earth is connected to the ground end of described control unit 500 as described control circuit;
As shown in Figure 1, described control unit 500 comprises power circuit, relay K 1 and control circuit Q1 thereof, relay K 2 and control circuit Q2 thereof, rectification circuit D2, dividing potential drop, AD sample circuit U3, and single-chip microcomputer U2; Relay K 1 and relay K 2 are single-pole double-throw relay, and initial condition when relay K 1 and relay K 2 are not energized as shown in Figure 1.
Described power circuit comprises the insulating power supply circuit T1, bridge rectifier D1 and the reduction voltage circuit U1 that connect successively, the input of insulating power supply circuit T1 is connected in two phase lines (L phase, N phase) of civil power, the output of reduction voltage circuit U1 exports 5V voltage to single-chip microcomputer U2, for single-chip microcomputer U2 provides working power.
The output of single-chip microcomputer U2 is connected respectively to the control end of control circuit Q1 and control circuit Q2; Relay K 1(first single-pole double-throw relay) normal-closed end and the normal beginning be connected to two phase lines (L phase, N phase) of civil power respectively, the common port (A point) of relay K 1 is connected to relay K 2(second single-pole double-throw relay respectively) Chang Kaiduan and the input of rectification circuit D2, the normal-closed end (B point) of relay K 2 is connected to the earth terminal of rectification circuit D2, and the common port (C point) of relay K 2 is connected to and holds describedly; The output of rectification circuit D2 is connected to the input of single-chip microcomputer U2 by dividing potential drop, AD sample circuit U3.During energising, the power supply of two phase line inputs, successively through insulating power supply circuit T1, bridge rectifier D1 and reduction voltage circuit U1, generates 5V voltage and sends into single-chip microcomputer U2, for single-chip microcomputer U2 provides working power;
Single-chip microcomputer U2 is according to the control logic work preset in it, the normal-closed end of control circuit Q1 control relay K1 and normal beginning are connected once respectively, now relay K 2 is failure to actuate, and the earth terminal of rectification circuit D2 is connected to the ground end of control unit, using this place end as ground connection sampled point;
The normal-closed end of engage relay K1 and twice voltage of normal beginning gained carry out rectification via rectification circuit D2 respectively, single-chip microcomputer U2 is passed to again by dividing potential drop, AD sample circuit U3, single-chip microcomputer U2 carries out height to the voltage of twice and compares, final single-chip microcomputer U2 exports control signal to control circuit Q1, one end (normal-closed end as in Fig. 1) that relatively, voltage is lower is switched to by control circuit Q1 control relay K1, lower one end is N phase, and now A point (common port of relay K 1) becomes N phase;
When A point has been chosen as N phase time, single-chip microcomputer U2 exports control signal to control circuit Q2, by control circuit Q2 control relay K2 action, its Chang Kaiduan is connected, B point (normal-closed end) is held with ground and is disconnected, its Chang Kaiduan is connected to described end by its common port (C point), thus realizes the N after selecting to be connected to hold describedly.Like this, just inserting or anti-plug when being input as L/N or N/L(plug), can guarantee that A point is for N phase.
In the utility model, when relay K 2 does not work, B point is held with being connected on, and as the function that L phase is selected with N phase, after L phase and N phase have been selected, B point and ground is held the safety disconnected to protect single-chip microcomputer U2 and peripheral circuit.
In the utility model, the ground end of control unit is connected to the device of the reliable kiss the earth of an energy.
As shown in Figure 2, the heater 100 of heater comprises the inner insulating layer 1, metal tube 2, middle insulating barrier 3 and the external insulation layer 4 that adhere to successively from the inside to the outside, heater coil 5 is located between middle insulating barrier 3 and external insulation layer 4 around dish, and the two ends of inner insulating layer 1 are connected to pipeline 6; The below of heater 100 is provided with medium 200, medium 200 has certain dielectric constant and is flat open containers shape, and the bottom of medium 200 and ground 400 reliable contacts, hold solvent 300, two pipelines 6 with certain dielectric constant in medium 200 and stretch in solvent 300 respectively; Metal tube 2, inner insulating layer 3, solvent 300 and medium 200 form the device of described kiss the earth, and described ground end is connected to by a wire on the metal tube of the device of described kiss the earth.
In the utility model, the device of kiss the earth is by metal tube 2, inner insulating layer 3, solvent 300 and medium 200 are formed, when control unit 500 is doing L phase or N phase is selected, terminate to metal tube 2 and by inner insulating layer 3, solvent 300 and medium 200 are connected to ground, be used as the measure loop of L phase or N phase, it is weakened that ground end passes to surface process voltage through medium 200, finally end will well below civil power with L or N phase, because of L relatively terminal voltage be far longer than the voltage that N relatively holds, L phase or N phase is distinguished with this, metal tube 2 is connected to when the N phase after selection is held with passing through, the charge inducing on solvent 300 pairs of ground 400 can be eliminated, guarantee the safety of the person.
Device of the present utility model is applicable to any to paddle and human body can touch the heater of water, and it utilizes the feature of product structure, and the device manufacturing a reliable kiss the earth is used as sampled point and is carried out identifying phase conductor, and N phase is held with being switched to the most at last, eliminates charge inducing.
Above-described embodiment is just to explanation of the present utility model, instead of to restriction of the present utility model, any utility model do not exceeded in the utility model spirit is created, and all falls within protection range of the present utility model.
Innovative point of the present utility model is the design of circuit structure, and the device being used as the reliable kiss the earth of sampled point that utilized product structure feature to manufacture.In the utility model, single-chip microcomputer is only compare the voltage of two phase lines and carry out action according to comparative result output signal control relay, and the function of single-chip microcomputer also realizes by hardware here.
Claims (3)
1. eliminate the device of heater charge inducing, it is characterized in that:
Comprise the device of a control unit and a kiss the earth, the device of described kiss the earth is connected to the ground end of described control unit as described control circuit;
Described control unit comprises power circuit, the first single-pole double-throw relay and control circuit thereof, the second single-pole double-throw relay and control circuit thereof, rectification circuit, dividing potential drop, AD sample circuit, and single-chip microcomputer;
The input of described power circuit is connected in two phase lines of civil power, and the output of described power circuit is connected to described single-chip microcomputer, for described single-chip microcomputer provides working power;
The output of described single-chip microcomputer is connected respectively to the control circuit of described first single-pole double-throw relay and the control circuit of described second single-pole double-throw relay;
The normal-closed end of described first single-pole double-throw relay and normal beginning are connected to two phase lines of civil power respectively, the common port of described first single-pole double-throw relay is connected to the Chang Kaiduan of described second single-pole double-throw relay and the input of described rectification circuit respectively, the normal-closed end of described second single-pole double-throw relay is connected to the earth terminal of described rectification circuit, and the common port of described second single-pole double-throw relay is connected to be held describedly; The output of described rectification circuit is connected to the input of described single-chip microcomputer by described dividing potential drop, AD sample circuit.
2. the device of elimination heater charge inducing according to claim 1, it is characterized in that: the heater of heater comprises the inner insulating layer, metal tube, middle insulating barrier and the external insulation layer that adhere to successively from the inside to the outside, heater coil is located between described middle insulating barrier and external insulation layer around dish, and the two ends of described inner insulating layer are connected to pipeline; The below of described heater is provided with in container-like and have the medium of certain dielectric constant, and the bottom of described medium and earth surface, and described Media Contents receives the solvent with certain dielectric constant, and described pipeline stretches in described solvent respectively; Described metal tube, described inner insulating layer, described solvent and described medium form the device of described kiss the earth, hold describedly and are connected by wire between described metal tube.
3. the device of elimination heater charge inducing according to claim 2, is characterized in that: the bottom surface of described medium is plane, with ground reliable contacts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420355028.2U CN204231678U (en) | 2014-06-30 | 2014-06-30 | Eliminate the device of heater charge inducing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420355028.2U CN204231678U (en) | 2014-06-30 | 2014-06-30 | Eliminate the device of heater charge inducing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204231678U true CN204231678U (en) | 2015-03-25 |
Family
ID=52929720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420355028.2U Withdrawn - After Issue CN204231678U (en) | 2014-06-30 | 2014-06-30 | Eliminate the device of heater charge inducing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204231678U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104066212A (en) * | 2014-06-30 | 2014-09-24 | 厦门昰能机电科技有限公司 | Method and device for eliminating inductive charge of heater |
-
2014
- 2014-06-30 CN CN201420355028.2U patent/CN204231678U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104066212A (en) * | 2014-06-30 | 2014-09-24 | 厦门昰能机电科技有限公司 | Method and device for eliminating inductive charge of heater |
| CN104066212B (en) * | 2014-06-30 | 2016-01-20 | 厦门昰能机电科技有限公司 | Eliminate method and the device of heater charge inducing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150325 Effective date of abandoning: 20160120 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |