CN201759217U

CN201759217U - Timing temperature-controlled electric blanket

Info

Publication number: CN201759217U
Application number: CN2010202025458U
Authority: CN
Inventors: 迟昀涛
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-05-24
Filing date: 2010-05-24
Publication date: 2011-03-16
Anticipated expiration: 2020-05-24

Abstract

The utility model relates to a timing temperature-controlled electric blanket provided with an automatic control circuit that supplies power when the temperature drops and cuts off power supply when the temperature increases. The electric blanket comprises a power supply, a power supply switch (K3), a fuse (FU), a single-pole double-throw switch (K2), a switch (K1), an electric heating wire, and a time-base circuit integrated block. The power supply, the power supply switch (K3), the fuse (FU), the single-pole double-throw switch (K2) and the electric heating wire form a first circuit; the power supply, the power supply switch (K3), the fuse (FU), the single-pole double-throw switch (K2), the switch (K1), the electric heating wire and the time-base circuit integrated block are serially connected to form a second circuit; and the first circuit is parallelly connected with the second circuit. The utility model has the benefits that the three pins of the time-base circuit integrated block continuously and orderly output positive pulses and negative pulses, so as to ensure the electric blanket to maintain at a proper temperature, prevent possible accidents due to continuous temperature increase of the electric blanket and ensure the safety of users.

Description

The timing temperature control electric blanket

Technical field

The utility model relates to electric blanket, relates in particular to a kind of electric blanket that is provided with the automatic control circuit that heats power supply, cooling outage.

Background technology

At present, the electric blanket of Xiao Shouing is to control power supply, cut off the power supply and control the temperature of electric blanket by hand switch on the market, and often when electric blanket was got to the high temperature shelves, temperature was too high, and constantly rising of temperature, caused the generation of security incident easily; Even get to the low temperature shelves, voltage is reduced to 110V by 220V, but growth along with the time, temperature is accumulation constantly, and the temperature of accumulation reaches 45 degree when above, can have an accident equally, keep a kind of vigilant when allowing man-hour in the sleep state, cause user's the not good even insomnia of sleep state easily,, do not have the sense of security though heat preservation effect is arranged.

The utility model content

The utility model is according to the deficiencies in the prior art, aims to provide a kind of too high automatic outage of temperature, temperature of can realizing automatically and reduces the electric blanket that the back energising heats, and keeps a body temperature degree and remains in the safe range of a suitable sleep quality to reach.

The utility model is achieved through the following technical solutions: regularly temperature control electric blanket comprises power supply, power switch K3, fuse FU, single-pole double-throw switch (SPDT) K2, K switch 1, the timely basic circuit chip of heating wire; Power supply, power switch K3, fuse FU, single-pole double-throw switch (SPDT) K2 and heating wire are connected in series and constitute first circuit; Power supply, power switch K3, fuse FU, single-pole double-throw switch (SPDT) K2, K switch 1, the timely basic circuit chip of the heating wire formation second circuit that is connected in series; First circuit and second circuit are connected in parallel; The time base circuit integrated package also is provided with resistance R 1, resistance R 2, resistance R 3, unidirectional thyristor G, capacitor C 1 and capacitor C 2; Time base circuit integrated package 7 pins, 8 pins are connected in resistance R 1 two ends; Time base circuit integrated package 7 pins, 6 pins are connected in resistance R 2 two ends; Resistance R 3 and unidirectional thyristor G series connection back one are terminated at 3 pins, and the other end is connected to 1 pin; 5 pins connect capacitor C 2 and capacitor C 1, and capacitor C 1 other end connects 6 pins, 2 pins; 8 pins, 4 pins are connected with power supply.

Below above technical scheme is further elaborated:

Electric blanket comprises resistance R 5 and transistor D5, constitutes tertiary circuit after resistance R 5, transistor D5, power switch K3 and power supply are connected in series.

Second circuit also comprises capacitor C 4, resistance R 4, transistor D2, transistor D3 and capacitor C 3; Be series at second circuit after capacitor C 4 and resistance R 4 are connected in parallel, transistor D2 is series at second circuit; Transistor D3 and capacitor C 3 backs in parallel one terminations are gone into the current output terminal of transistor D2, other end earth connection.

Described second circuit also comprises transistor D6 and resistance R 6; It is in parallel after resistance R 6, transistor D6 are connected in series with unidirectional thyristor G.

First circuit also comprises transistor D4, and transistor D4 is series at first circuit.

Described transistor D5 is the emitting red light transistor.

Described transistor D6 is the green emitting transistor.

The beneficial effects of the utility model are: one, timing temperature control electric blanket comprise two control circuits, first circuit that constitutes by power supply, power switch K3, fuse FU, single-pole double-throw switch (SPDT) K2 and heating wire, when room temperature very low (normally 10 spend) time, closed power switch K3, the conducting strip of single-pole double-throw switch (SPDT) K2 is thrown to first circuit, electric blanket will more powerful rapidly heating, makes electric blanket reach the temperature that is fit to human body very soon; They are two years old, when room temperature is higher than 10 degree, when perhaps electric blanket has been heated to the temperature that is fit to human body, by power supply, power switch K3, fuse FU, single-pole double-throw switch (SPDT) K2, K switch 1, the timely basic circuit chip of the heating wire second circuit that constitutes that is connected in series is started working, closed power switch K3, K switch 1, the conducting strip of single-pole double-throw switch (SPDT) K2 is thrown to second circuit, at this moment, when 3 pins of time base circuit integrated package are exported positive pulse, unidirectional thyristor G conducting, heating wire begins heating (the green emitting transistor goes out), and certain interval of time, when electric blanket temperature is high slightly, the 3 pins output negative pulse of time base circuit integrated package, not conducting of unidirectional thyristor G, heating wire stops heating (the green emitting transistor is bright), so, 3 pins of time base circuit integrated package are orderly output positive pulse continuously, negative pulse, it exports positive pulse, the time interval of negative pulse can maintain a suitable sleep quality temperature according to electric blanket and set, guaranteed that electric blanket maintains a suitable temperature, prevented that electric blanket from constantly heating the accident that may cause, ensured user's safety; Three, when second circuit carries out work, through after capacitor C 4, resistance R 4 resistance-capacitance depressurizations, transistor D2 halfwave rectifier, capacitor C 3 filtering and the transistor D2 voltage stabilizing family expenses 220V voltage being become the safe voltage output of 12V, further guarantee has been done in user's personal safety; Four, when Fast Heating, when article one circuit carries out work,, also guaranteed the safe handling of electric blanket through after the transistor D4 halfwave rectifier family expenses 220V voltage being become 110V voltage.

Accompanying drawing is described

Fig. 1 is circuit theory diagrams of the present utility model.

The specific embodiment

With reference to shown in Figure 1, when the utility model when being used for Chinese family, its supply voltage i.e. the 220V household voltage of China; Transistor D4 is 1N4007, when the conducting strip of closed power switch K3, single-pole double-throw switch (SPDT) was thrown to first circuit, first circuit formed the closed-loop path, and electric blanket begins heating, it is 110V by the 220V step-down that transistor 1N4007 makes the voltage that is added to the heating wire two ends, has guaranteed user's safety.

Capacitor C 4 is a 105P electric capacity, and the resistance of R4 is 500K Ω, and transistor D2 is the 1N4007 transistor, and capacitor C 3 capacitances are 470 μ, and the time base circuit integrated package is the NE555 time base circuit, and unidirectional thyristor G model is 2P4M; When being higher than 10 degree or electric blanket temperature, room temperature reached when being fit to human body temperature, closed power switch K3, K switch 1, the conducting strip of single-pole double-throw switch (SPDT) is thrown to second circuit, through after capacitor C 4, resistance R 4 resistance-capacitance depressurizations, transistor D2 halfwave rectifier, capacitor C 3 filtering and the transistor D2 voltage stabilizing family expenses 220V voltage being become the safe voltage output of 12V, so, under the situation that the user falls asleep, 12 safe voltage has been guaranteed the personal safety of user under sleep state during the supply voltage of electric blanket; So simultaneously, resistance R 1 resistance is 200 Ω, the resistance of resistance R 2 is 300 Ω, the time base circuit integrated package will switch on cut off the power supply after about 2 minutes about 2 minutes (being longer than power-off time conduction time slightly) so continue exchange, its 3 pin output positive pulse during the energising of time base circuit integrated package, unidirectional thyristor G conducting, 2 minutes (green light goes out) of electric blanket heating; Its 3 pin output negative pulse during the outage of time base circuit integrated package, not conducting of unidirectional thyristor G, electric blanket stops heating (green light is bright), electric blanket will so heat after 2 minutes heat radiation 2 minutes, keep electric blanket for a long time in the comfortable equilibrium temperature of human body safety, avoided user's temperature under the situation of being sunk into sleep to raise and brought danger, also made the user can not cause situations such as sleep discomfort because electric blanket temperature is difficult to control.

The announcement of book and instruction according to the above description, the utility model those skilled in the art can also carry out suitable change and modification to above-mentioned embodiment.Therefore, the specific embodiment that discloses and describe above the utility model is not limited to also should fall in the protection domain of claim of the present utility model modifications and changes more of the present utility model.In addition, although used some specific terms in this specification, these terms do not constitute any restriction to the utility model just for convenience of description.

Claims

1. the timing temperature control electric blanket is characterized in that comprising: power supply, power switch (K3), fuse (FU), single-pole double-throw switch (SPDT) (K2), switch (K1), the timely basic circuit chip of heating wire; Power supply, power switch (K3), fuse (FU), single-pole double-throw switch (SPDT) (K2) and heating wire are connected in series and constitute first circuit; Power supply, power switch (K3), fuse (FU), single-pole double-throw switch (SPDT) (K2), switch (K1), the timely basic circuit chip of the heating wire formation second circuit that is connected in series; First circuit and second circuit are connected in parallel;

The time base circuit integrated package also is provided with resistance (R1), resistance (R2), resistance (R3), unidirectional thyristor (G), electric capacity (C1) and electric capacity (C2); Time base circuit integrated package 7 pins, 8 pins are connected in resistance (R1) two ends; Time base circuit integrated package 7 pins, 6 pins are connected in resistance (R2) two ends; Resistance (R3) and unidirectional thyristor (G) series connection back one are terminated at 3 pins, and the other end is connected to 1 pin; 5 pins connect electric capacity (C2) and electric capacity (C1), and electric capacity (C 1) other end connects 6 pins, 2 pins; 8 pins, 4 pins are connected with power supply.

2. timing temperature control electric blanket according to claim 1 is characterized in that: also comprise resistance (R5) and transistor (D5), constitute tertiary circuit after resistance (R5), transistor (D5), power switch (K3) and power supply are connected in series.

3. timing temperature control electric blanket according to claim 1 is characterized in that: second circuit also comprises electric capacity (C4), resistance (R4), transistor (D2), transistor (D3) and electric capacity (C3); Be series at second circuit after electric capacity (C4) and resistance (R4) are connected in parallel, transistor (D2) is series at second circuit; Transistor (D3) back in parallel with electric capacity (C3) one termination is gone into the current output terminal of transistor (D2), other end earth connection.

4. timing temperature control electric blanket according to claim 1 is characterized in that: described second circuit also comprises transistor (D6) and resistance (R6); It is in parallel after resistance (R6), transistor (D6) are connected in series with unidirectional thyristor (G).

5. timing temperature control electric blanket according to claim 1 is characterized in that: first circuit also comprises transistor (D4), and transistor (D4) is series at first circuit.

6. timing temperature control electric blanket according to claim 2 is characterized in that: described transistor (D5) is the emitting red light transistor.

7. timing temperature control electric blanket according to claim 4 is characterized in that: described transistor (D6) is the green emitting transistor.