CN109008761A - Constant temperature seat ring and take a seat signal acquisition method and temprature control method - Google Patents

Constant temperature seat ring and take a seat signal acquisition method and temprature control method Download PDF

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Publication number
CN109008761A
CN109008761A CN201811054168.5A CN201811054168A CN109008761A CN 109008761 A CN109008761 A CN 109008761A CN 201811054168 A CN201811054168 A CN 201811054168A CN 109008761 A CN109008761 A CN 109008761A
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CN
China
Prior art keywords
seat ring
temperature
seat
heating
heating film
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201811054168.5A
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Chinese (zh)
Inventor
平志雄
翟红雨
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Jiaxing Chi Smart Electrical Appliance Co Ltd
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Jiaxing Chi Smart Electrical Appliance Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jiaxing Chi Smart Electrical Appliance Co Ltd filed Critical Jiaxing Chi Smart Electrical Appliance Co Ltd
Priority to CN201811054168.5A priority Critical patent/CN109008761A/en
Publication of CN109008761A publication Critical patent/CN109008761A/en
Pending legal-status Critical Current

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Classifications

    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47KSANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
    • A47K13/00Seats or covers for all kinds of closets
    • A47K13/24Parts or details not covered in, or of interest apart from, groups A47K13/02 - A47K13/22, e.g. devices imparting a swinging or vibrating motion to the seats
    • A47K13/30Seats having provisions for heating, deodorising or the like, e.g. ventilating, noise-damping or cleaning devices
    • A47K13/305Seats with heating devices

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  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Control Of Resistance Heating (AREA)

Abstract

The invention discloses a kind of constant temperature seat rings, including seat ring base, the seat ring base has been sequentially arranged above heating layer and insulating layer, the heating layer is to be printed in the heating film formed after the conductor wire slurry above seat ring base solidifies, it further include the Safety Extra Low Voltage DC power supply for powering to heating film, insulating layer is painted using resin of the hardness greater than 2H is solidified, the thickness of the insulating layer is less than 0.5mm, save the temperature control sensor and seat occupancy sensor on traditional seat ring, overall cost reduces, the thermally conductive distance of heating film to raceway surfaces reduces, corresponding rate of rise in temperature is faster, heating power is small but utilization rate is high, electricity consumption is safer, raceway surfaces hardness height more scratch-resistant, structure is simpler, it is more easier to produce, simple process, it is low in cost.

Description

Constant temperature seat ring and take a seat signal acquisition method and temprature control method
Technical field
The invention belongs to closet cap field, more specifically to a kind of constant temperature seat ring and take a seat signal acquisition method and temperature Spend control method.
Background technique
With development in science and technology and improvement of living standard, intelligent closestool is gradually understood by masses, and initially enters common family Front yard.Generally there is the seat ring of intelligent closestool temperature detection, detection of taking a seat, control heating power to realize thermostatically controlled function.For Realize these functions, seat ring shell is molded by thermoplastic material, is divided into upper casing 1 and pedestal two parts, picture 1-4 institute Show, the inner surface of upper casing 1 is integrated with temperature sensor 4, inductor 3 of taking a seat, thermally conductive aluminium foil 5, heating wire 2, and upper casing and pedestal are logical It crosses the techniques such as ultrasonic bonding, glue bonding to be fixed together, as shown in Figs 1-4.
There is following defect with the seat ring that this traditional scheme designs:
1. seat ring is the plastic housing of hollow, upper and lower two parts bonding, production technology is more complex, and process is more, bonding Partial intensities are weaker, and fatigue is easy after long-time service and is split;
2. heating wire therein uses 220V AC power supply, there is certain security risk, it should be noted that the insulation of seat ring, glues Socket part point will be prevented into water;
3. part sensitive group can raise fear, anxiety in seat ring surface feel to alternating current impression electricity;
4. seat ring upper casing is thicker in view of to bear human body weight, generally in 3.5mm or more, heating wire section is circle Shape, heating wire are also surrounded by the insulated hull of 1mm or more outside, cause heat conduction very slow, and the temperature rise speed of raceway surfaces is very slow, The temperature that setting will be can be only achieved in the case where heating with full power after 2 minutes, can not be made into instant heating type seat ring;
5. some designs use high-power heating wire in order to accelerate temperature rise speed, easily causes excess temperature, calcination etc. and ask safely Topic;
6. either with PP or ABS material, raceway surfaces hardness is inadequate, generally 1B or HB, it is easy in use process Leave scratch;
7. seat ring is thicker, heavy, design is limited, unsightly;
8. part comparison is more, complex procedures, at high cost.
Summary of the invention
In view of the deficiencies of the prior art, it is powered, and subtracted using Safety Extra Low Voltage DC power supply the present invention provides a kind of Small surface needs the thickness heated, and heating efficiency is high, and production technology is simpler, constant temperature seat ring at low cost.
To achieve the above object, the present invention provides the following technical scheme that a kind of constant temperature seat ring, including seat ring base, Be characterized in that: the seat ring base has been sequentially arranged above heating layer and insulating layer, and the heating layer is in seat ring base The heating film of side, further includes the Safety Extra Low Voltage DC power supply for powering to heating film.
The further heating film is solidified by the electrocondution slurry being printed in seat ring base.
The further seat ring base is by thermoplastic material injection molding.
The temperature-coefficient of electrical resistance of the further heating film is greater than+2 ‰.
The further insulating layer includes the paint for being sprayed at heating layer surface or the thermoplastic material of injection molding.
The further insulating layer is resin paint, and the thickness of the insulating layer is less than 0.5mm.
The voltage of the further Safety Extra Low Voltage DC power supply is 12-24V.
It further further include control chip, control circuit and signal deteching circuit, control chip is according to signal detection electricity The signal feedback on road carries out operation, and operation result determines the heating power of the heating film.
A kind of signal acquisition method of taking a seat of constant temperature seat ring includes capacitive detection circuit in control circuit, take a seat signal by Capacitive detection circuit determines;When detecting capacitance signal, electronic switch is disconnected in capacitive detection circuit, when user does not take a seat, detection Fixed equivalent capacity C1 is detected between port and signal ground;When user takes a seat, formed between detection port and signal ground The one additional equivalent capacity C2 in parallel with C1 sets capacitance change, Δ C threshold value in control chip program, by comparing detection Whether the capacitance change, Δ C on port reaches given threshold, determines that user has taken a seat when more than threshold value.
A kind of temprature control method of constant temperature seat ring obtains the real-time temperature T on the surface of seat ring by signal deteching circuit, When temperature T is greater than target temperature Tt, reduce heating power, when temperature T is less than target temperature Tt, increases heating power, institute Real-time temperature T=(R-R0)/(R0*TCR)+T0 is stated, wherein R is the instant resistance of heating film, and T0 is fiducial temperature, and R0 is benchmark At a temperature of heating film resistance value, TCR be heating film temperature-coefficient of electrical resistance.
Compared with prior art, the beneficial effects of the present invention are: the present invention is molded using monolithic, heater element is to be printed in Electrocondution slurry in seat ring base forms heating film after electrocondution slurry solidification, and heating film is very wide very thin, the contact with raceway surfaces Area is very big, and insulating layer is preferably painted using heat-transfer rate, the very thin generally 0.2mm or so of insulating layer, the heat of heating film Amount can be rapidly transferred to raceway surfaces usually seat ring heating is in close state, only detect human body close to when just open add Heat, energy conservation and environmental protection.Since heating speed is fast, maximum heating power can be also suitably reduced, improves safety;Heating film is using safety Safety Extra Low Voltage DC power supply power supply, eliminate induced current, eliminate electric shock risk;Use after solidification hardness 2H with On plastic resin paint, can be scratched in use to avoid seat ring, keep appearance looks elegant;It is using capacitive detection circuit detection No user takes a seat, and saves inductor of taking a seat, while the real-time temperature of raceway surfaces is obtained using signal deteching circuit, saves seat ring On temperature sensor, reduce integral thickness, simple production process is low in cost.
Detailed description of the invention
Fig. 1 is the top view of the prior art;
Fig. 2 is the cross section view of the prior art;
Fig. 3 is the enlarged drawing in the portion A in Fig. 2;
Fig. 4 is the side view of the prior art;
Fig. 5 is the structural schematic diagram of constant temperature seat ring of the invention;
Fig. 6 is the side view of constant temperature seat ring of the present invention;
Fig. 7 is control circuit and signal deteching circuit figure in the present invention;
Fig. 8 is that user does not take a seat capacitive detection circuit figure;
Capacitive detection circuit figure when Fig. 9 takes a seat for user.
Appended drawing reference: 6, seat ring base;7, heating film;8, insulating layer.
Specific embodiment
Referring to figs. 1 to Fig. 9, the present invention will be further described.
As seen in figs. 5-6, a kind of constant temperature seat ring, including seat ring base 6, the seat ring base 6, which has been sequentially arranged above, to be added Thermosphere and insulating layer 8, the heating layer are the heating film 7 above seat ring base 6, further include for powering to heating film 7 Safety Extra Low Voltage DC power supply, the voltage of preferred Safety Extra Low Voltage DC power supply is 12-24V, using the electricity of safety Range is pressed, can either guarantee that heating film 7 generates heat enough, keep heating temperature on raceway surfaces i.e. insulating layer 8 enough, while can disappear Except user's electric shock feared state of mind, achieve the purpose that safer.
Wherein seat ring base 6 is passed through on the surface of present cycle basis layer 6 by the thermoplastic materials single injection-molded such as PP, ABS Printing technology is upper by electrocondution slurry printing and forms heating film 7, encloses insulating materials again after electrocondution slurry solidification and forms insulation Layer 8.
The heating film 7 being formed by curing in the present invention using electrocondution slurry is heated, heating film 7 compared to the prior art in The combination thickness of heating wire and insulated hull substantially reduces, and the heating region of heating film 7 and raceway surfaces contact area are bigger, The heating of safety can be achieved under the cooperation of Safety Extra Low Voltage DC power supply simultaneously, the thickness of insulating layer 8 may be selected non-at this time Often thin coating improves heating efficiency, forms immediate heating type seat ring.
The present embodiment preferably the heating film 7 temperature-coefficient of electrical resistance be greater than+2 ‰, with the temperature liter of heating film 7 Height, resistance increase with it, excessively high to prevent stopping seat circle surface temperature, limit high temperature to play the role of safeguard protection.
Insulating layer 8 described in the present embodiment includes the paint for being sprayed at heating layer surface or the thermoplasticity material of injection molding Material, wherein thermoplastic material can be PP, ABS etc., preferably solidify resin of the hardness greater than 2H and paint, the insulating layer 8 Thickness is less than 0.5mm, first in production, can be painted on cured 7 surface of heating film, high production efficiency, next is compared Thickness substantially reduces for thermoplastic material, and heat conduction efficiency is high, and fever is fast, while its hardness is sufficiently large, avoids scratching, excellent The insulating layer 8 of choosing is with a thickness of 0.2mm.
The present embodiment further includes control chip, control circuit and signal deteching circuit, and control chip is according to signal detection electricity The signal feedback on road carries out operation, and operation result determines the heating power of the heating film 7, determines that user is by control circuit It is no to take a seat, if having taken a seat, so that heating film 7 is carried out power output heating by controlling chip, otherwise disconnect the power of heating film 7 Output.
As Figure 7-9, a kind of signal acquisition method of taking a seat of constant temperature seat ring includes capacitance detecting electricity in control circuit Road, signal of taking a seat are determined by capacitive detection circuit;When detecting capacitance signal, electronic switch is disconnected in capacitive detection circuit, user When not taking a seat, detects and detect fixed equivalent capacity C1 between port and signal ground;When user takes a seat, in detection port and letter An additional equivalent capacity C2 in parallel with C1 is formed between number ground, the setting capacitance change, Δ C threshold value in control chip program, Whether reach given threshold by comparing the capacitance change, Δ C on detection port, determines that user has taken a seat when more than threshold value.
Detailed process is, when seat ring does not heat, the electronic switch K1 in capacitive detection circuit is disconnected, and detects port C_ SAMPLE is in suspended state;If user is not landed on seat ring at this time, between port C_SAMPLE and signal ground It can detect a relatively-stationary equivalent capacity C1 (Fig. 8);If user is sitting on seat ring at this time, since the capacitor of human body is made With being equivalent between port C_SAMPLE and signal ground an equivalent capacity C2 (Fig. 9) again in parallel, total equivalent capacity becomes For C1+C2;Therefore it is disconnected in K1, when seat ring does not heat, detects capacitance change, Δ C=(C1+C2)-C1=C2 on port, than Whether reach threshold value compared with Δ C, can learn whether user is in the state taken a seat, can be saved in the way of this in the prior art Take a seat inductor, reduce it is whole occupy volume, reduce production cost, become thinner seat ring.
As shown in fig. 7, a kind of temprature control method of constant temperature seat ring, obtains the surface of seat ring by signal deteching circuit Real-time temperature T reduces heating power when temperature T is greater than target temperature Tt, when temperature T is less than target temperature Tt, increases hair Thermal power, the real-time temperature T=(R-R0)/(R0*TCR)+T0, wherein R is the instant resistance of heating film 7, and T0 is benchmark temperature Degree, R0 are the resistance values of heating film 7 under fiducial temperature, and TCR is the temperature-coefficient of electrical resistance of heating film 7.
All conductive materials have a relatively-stationary temperature resistance coefficient TCR, are indicating the every raising of temperature once, electricity Resistance change on the original basis how much.TCR is basically unchanged within the scope of certain temperature, and has higher precision and stabilization Property.
There is physical equation: TCR* Δ T=Δ R/R0
Wherein Δ T=T-T0, Δ R=R-R0
It can obtain: TCR* (T-T0)=(R-R0)/R0
Then T=(R-R0)/(R0*TCR)+T0
The measurement and calculating of R and R0: by capacitive detection circuit Fig. 7 it is found that in electrified regulation, have
U/Vcc=Rbase/(Rbase+ R) be easy to get R=Vcc*Rbase/U-Rbase
U0/ Vcc=Rbase/(Rbase+R0) be easy to get R0=Vcc*Rbase/U0-Rbase
Wherein, RbaseFor the reference resistance of temperature drift very little, it is far from heating seat ring, and resistance value is not substantially by temperature shadow It rings;U is R when being heated to temperature TbaseOn sampled voltage;U0To be heated to temperature T0When, RbaseOn sampled voltage;Vcc is Supply voltage value.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications It should be regarded as protection scope of the present invention.

Claims (9)

1. a kind of constant temperature seat ring, including seat ring base, it is characterised in that: the seat ring base be sequentially arranged above heating layer and Insulating layer, the heating layer are heating film above seat ring base, further include that Special safety for powering to heating film is low Voltage DC power supply.
2. constant temperature seat ring according to claim 1, it is characterised in that: the heating film is by being printed in leading in seat ring base Electric slurry curing forms.
3. constant temperature seat ring according to claim 1, it is characterised in that: the seat ring base is molded by thermoplastic material Type.
4. constant temperature seat ring according to claim 1, it is characterised in that: the temperature-coefficient of electrical resistance of the heating film be greater than+ 2‰。
5. constant temperature seat ring described in any one of -4 according to claim 1, it is characterised in that: the insulating layer includes being sprayed at The paint of heating layer surface or the thermoplastic material of injection molding.
6. constant temperature seat ring described in any one of -4 according to claim 1, it is characterised in that: the insulating layer is resinon The thickness of paint, the insulating layer is less than 0.5mm.
7. constant temperature seat ring according to claim 1, it is characterised in that: further include control chip, control circuit and signal inspection Slowdown monitoring circuit, control chip is fed back according to the signal of signal deteching circuit carries out operation, and operation result determines the hair of the heating film Thermal power.
8. a kind of signal acquisition method of taking a seat of constant temperature seat ring as claimed in claim 7, it is characterised in that: wrapped in control circuit Capacitive detection circuit is included, signal of taking a seat is determined by capacitive detection circuit;When detecting capacitance signal, electronic cutting in capacitive detection circuit Shutdown is opened, and when user does not take a seat, is detected and is detected fixed equivalent capacity C1 between port and signal ground;When user takes a seat, It detects and forms an additional equivalent capacity C2 in parallel with C1 between port and signal ground, set capacitor in control chip program Whether changes delta C threshold value reaches given threshold by comparing the capacitance change, Δ C detected on port, determines and use when being more than threshold value It has taken a seat at family.
9. a kind of temprature control method of constant temperature seat ring as claimed in claim 7, it is characterised in that: pass through signal deteching circuit The real-time temperature T for obtaining the surface of seat ring reduces heating power when temperature T is greater than target temperature Tt, when temperature T is less than mesh When marking temperature Tt, increase heating power, the real-time temperature T=(R-R0)/(R0*TCR)+T0, wherein R is the instant of heating film Resistance, T0It is fiducial temperature, R0It is the resistance value of heating film under fiducial temperature, TCR is the temperature-coefficient of electrical resistance of heating film.
CN201811054168.5A 2018-09-11 2018-09-11 Constant temperature seat ring and take a seat signal acquisition method and temprature control method Pending CN109008761A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811054168.5A CN109008761A (en) 2018-09-11 2018-09-11 Constant temperature seat ring and take a seat signal acquisition method and temprature control method

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Application Number Priority Date Filing Date Title
CN201811054168.5A CN109008761A (en) 2018-09-11 2018-09-11 Constant temperature seat ring and take a seat signal acquisition method and temprature control method

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Publication Number Publication Date
CN109008761A true CN109008761A (en) 2018-12-18

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109655922A (en) * 2019-01-23 2019-04-19 厦门博晶光电技术有限公司 Intelligent closestool method for compensating signal, medium and the device of seat sensor
CN112105099A (en) * 2020-09-12 2020-12-18 畅和智能家居(嘉兴)有限公司 Ceramic heating element capable of measuring temperature and temperature measuring method thereof

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Publication number Priority date Publication date Assignee Title
JPH08273810A (en) * 1995-04-01 1996-10-18 Sony Chem Corp Plain heater body and manufacture thereof
JP2949114B1 (en) * 1998-08-04 1999-09-13 日本たばこ産業株式会社 Electric flavor generation article heating control device
JP2000080703A (en) * 1998-09-04 2000-03-21 Toto Ltd Sitting sensor for electrostatic capacitive human body private part-washing device
CA2295261A1 (en) * 1999-01-13 2000-07-13 Malden Mills Industries, Inc. Electric heating/warming fabric articles
JP2001135458A (en) * 1999-11-02 2001-05-18 Matsushita Electric Ind Co Ltd Sit-down-type heating appliance
JP2002110324A (en) * 2000-10-03 2002-04-12 Nok Corp Sheet heating element and its manufacturing method
JP2003059629A (en) * 2001-08-15 2003-02-28 Minato Giken:Kk Flat heater element
JP2004256720A (en) * 2003-02-27 2004-09-16 Otani National Denki Kk Coating for forming resistive heat generation film and heating unit
JP2009072566A (en) * 2007-08-31 2009-04-09 Panasonic Corp Toilet seat device
CN206310580U (en) * 2016-06-21 2017-07-07 苏州汉纳材料科技有限公司 High connductivity ultra-thin two-dimension carbon composite face heater and its application

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08273810A (en) * 1995-04-01 1996-10-18 Sony Chem Corp Plain heater body and manufacture thereof
JP2949114B1 (en) * 1998-08-04 1999-09-13 日本たばこ産業株式会社 Electric flavor generation article heating control device
JP2000080703A (en) * 1998-09-04 2000-03-21 Toto Ltd Sitting sensor for electrostatic capacitive human body private part-washing device
CA2295261A1 (en) * 1999-01-13 2000-07-13 Malden Mills Industries, Inc. Electric heating/warming fabric articles
JP2001135458A (en) * 1999-11-02 2001-05-18 Matsushita Electric Ind Co Ltd Sit-down-type heating appliance
JP2002110324A (en) * 2000-10-03 2002-04-12 Nok Corp Sheet heating element and its manufacturing method
JP2003059629A (en) * 2001-08-15 2003-02-28 Minato Giken:Kk Flat heater element
JP2004256720A (en) * 2003-02-27 2004-09-16 Otani National Denki Kk Coating for forming resistive heat generation film and heating unit
JP2009072566A (en) * 2007-08-31 2009-04-09 Panasonic Corp Toilet seat device
CN206310580U (en) * 2016-06-21 2017-07-07 苏州汉纳材料科技有限公司 High connductivity ultra-thin two-dimension carbon composite face heater and its application

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109655922A (en) * 2019-01-23 2019-04-19 厦门博晶光电技术有限公司 Intelligent closestool method for compensating signal, medium and the device of seat sensor
CN109655922B (en) * 2019-01-23 2021-09-28 厦门博晶光电技术有限公司 Signal compensation method, medium and device for intelligent closestool seating sensor
CN112105099A (en) * 2020-09-12 2020-12-18 畅和智能家居(嘉兴)有限公司 Ceramic heating element capable of measuring temperature and temperature measuring method thereof

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Application publication date: 20181218