CN106557096A - A safe and heat-preserving temperature-controlled sofa and its control circuit - Google Patents

Abstract

A safe heat-preservation temperature-controlled sofa comprises a sofa backrest, a sofa seat box and an electric heating wire, wherein a wooden support and an electric cabinet are arranged in the sofa seat box, a temperature controller, a start button, a stop button, a fuse and a power switch are arranged on an end plate of the sofa seat box, and a strip-shaped cover plate is arranged on the sofa seat box; the electric heating wire is connected with the electric cabinet and is arranged on the strip-shaped cover plate; the control circuit of the sofa comprises a three-level temperature control protection circuit and a load driving circuit. The electric cabinet is arranged in the sofa seat box, so that the problems in the prior art are solved, the electric heating wire is placed in the groove between the strip-shaped cover plates on the sofa seat box, the electric cabinet is not easy to break, the service life is long, the phenomena of ignition and electric leakage are avoided, and the occurrence of fire accidents is avoided. The invention has a three-level thermal protection circuit and overcurrent protection, and ensures that the power supply is stopped and the power is cut off for protection when the product is overheated. The sofa seat box is filled with the flame-retardant foaming heat-insulation material, so that the sofa seat box is not hot in summer and not cold in winter.

Description

A safe and heat-preserving temperature-controlled sofa and its control circuit

technical field

The invention relates to the field of daily necessities, in particular to a safe and heat-preserving temperature-controlled sofa and its control circuit.

Background technique

At present, there are few types of sofas used for heating equipment on the market. For example, heating with electric heating wire products has problems such as unsafe, few functions, and short service life. It is prone to accidents such as fire and electric leakage, and poor quality may endanger human life. Safety.

Contents of the invention

In view of the shortcomings of the above products, the purpose of the present invention is to disclose a safe and heat-preserving temperature-controlled sofa and its control circuit to solve the above existing problems.

The purpose of the present invention is achieved by the following technologies:

A safe and heat-preserving temperature-controlled sofa, including a sofa backrest, a sofa seat box and electric heating wires, a wooden support and an electric control box are arranged in the sofa seat box, and a temperature controller, a start button, a stop button, and a fuse are arranged on the end plate. and a power switch, on which there is a strip cover; the heating wire is connected with the electric control box and placed on the strip cover.

The above-mentioned electric control box is respectively connected with the temperature controller, the start button, the stop button, the fuse and the power switch.

The above-mentioned sofa seat box is filled with a flame-retardant foaming thermal insulation material.

There are at least two above-mentioned strip cover plates.

Bosses and hole slots are arranged on the above-mentioned strip cover plate.

The above-mentioned electric control box is provided with a control circuit.

The control circuit of a safe and heat-preserving temperature-controlled sofa includes a three-level temperature-control protection circuit and a load drive circuit, wherein the first-level protection circuit includes a relay KR, a start button ST, a stop button SP, a micro-transformer T ₁ , and a temperature-control switch group KSD ₁ ; The secondary protection circuit includes relay KR ₁ , microtransformer T ₂ , temperature control switch group KSD ₂ ; the tertiary protection circuit includes temperature controller WKR, PTC; the load drive circuit includes relay KR ₂ , heating wire RL, temperature control plus Warm coils W ₁ , W ₂ , W ₃ and toroidal transformer T.

There are 2-5 temperature control switches in the temperature control switch group KSD _{1 and} temperature control switch group KSD ₂ mentioned above.

The above-mentioned relay KR ₂ is used to protect the thermostat WKR; the described relay KR ₁ is for circuit protection after the thermostat WKR is damaged; the described relay KR is for preventing the relay KR _{1 , the} thermostat WKR, Circuit protection after relay KR ₂ is damaged.

Advantage of the present invention and beneficial effect:

1. The present invention sets an electric control box in the sofa seat box to overcome the problems existing in the prior art. By placing the heating wire in the groove between the strip cover plates on the sofa seat box, it is not easy to break and has a long service life. , Avoid causing ignition, leakage, and prevent fire accidents.

2. The heating wire of the present invention adopts enameled wire, which is characterized by small resistance and large passing current, but the product with resistance to 90°C and above should be selected when selecting, and a transformer is used to provide a safe voltage of 36V or below 36V for the resistance wire (enameled wire). Make the product safe.

3. The present invention has a three-level thermal protection circuit and overcurrent protection to ensure that when the product is overheated, the power supply will be stopped and the power will be cut off for protection.

4. The sofa seat box of the present invention is filled with flame-retardant foaming insulation material, so it is not hot in summer and not cool in winter.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

Fig. 2 is a schematic diagram of the sofa seat box in the present invention.

Fig. 3 is a schematic diagram of a strip cover plate in the present invention.

Fig. 4 is a schematic diagram of the control circuit of the present invention.

In the figure: 1- sofa backrest, 2- sofa seat box, 3- thermostat, 4- start button, 5- stop button, 6- fuse, 7- strip cover, 8- electric control box, 9- wood Support, 10-power switch, 71-boss, 72-hole slot.

detailed description

The present invention will be further described below in conjunction with accompanying drawing:

As shown in Figures 1, 2, and 3, a safe and heat-preserving temperature-controlled sofa includes a sofa backrest 1, a sofa seat box 2 and electric heating wires, and the sofa seat box 2 is provided with a wooden support 9 and an electric control box 8 , a temperature controller 3, a start button 4, a stop button 5, a fuse 6 and a power switch 10 are arranged on the end plate, and a strip cover 7 is arranged on it; the heating wire is connected with the electric control box 8 and placed in a strip on the cover plate 7.

The electric control box 8 is connected with the thermostat 3, the start button 4, the stop button 5, the fuse 6 and the power switch 10 respectively.

The described sofa seat box 2 is filled with flame retardant foaming insulation material.

There are at least two strip cover plates 7 , and bosses 71 and holes 72 are provided on the strip cover plates 7 .

The electric control box 8 is provided with a control circuit.

As shown in Figure 4, the control circuit of a safe and heat-preserving temperature-controlled sofa includes a three-level temperature control protection circuit and a load drive circuit, wherein the first-level protection circuit includes a relay KR, a start button ST, a stop button SP, and _a microtransformer T1 , temperature control switch group KSD ₁ ; secondary protection circuit includes relay KR ₁ , micro-transformer T ₂ , temperature control switch group KSD ₂ ; tertiary protection circuit includes temperature controller WKR, PTC; load drive circuit includes relay KR ₂ , electric heater Wire RL, temperature control heating coils W ₁ , W ₂ , W ₃ and toroidal transformer T.

There are 2-5 temperature control switches in the temperature control switch group KSD _{1 and} temperature control switch group KSD ₂ .

The relay KR ₂ is used to protect the thermostat WKR; the relay KR ₁ is used to protect the circuit after the thermostat WKR is damaged; the relay KR is used to prevent the relay KR _{1 and the} thermostat WKR from , Circuit protection after the relay KR ₂ is damaged.

Example

When in use, turn on the power switch 10, press the start button 4, the self-locking circuit is closed, the heating wire RL enters the heating state, when the temperature reaches the set value of the thermostat 3, the circuit is disconnected, and after the temperature drops, the circuit is connected.

When not in use, press the stop button 5, the relay KR will be powered off, the self-locking circuit will be unlocked, and the circuit will stop supplying power.

When the thermostat 3 is damaged, the load temperature continues to rise. When the temperature reaches the set value of the temperature control switch group KSD ₂ , the relay KR ₁ is disconnected, and the relay KR ₁ performs circuit protection. The entire circuit is disconnected to provide safety protection effect.

When the relay KR ₁ is damaged, the load temperature continues to rise. When the temperature reaches the set value of the temperature control switch group KSD ₁ , the relay KR is disconnected, the self-locking circuit is unlocked, the relay KR performs circuit protection, and the entire circuit is disconnected, which plays a role Safety protection.

Claims (8)

1. a kind of safety heat-preserving type temperature control sofa, including sofa backrest（1）, sofa seat-box（2）And heating wire, it is characterised in that：Described sofa seat-box（2）Wooden support is provided with inside（9）And electric cabinet（8）, its end plate is provided with temperature controller（3）, start button（4）, stop button（5）, electric fuse（6）And on and off switch（10）, which is provided with cover slip（7）；Heating wire and electric cabinet（8）Connection, is placed in cover slip（7）On.

2. a kind of safety heat-preserving type temperature control sofa as claimed in claim 1, it is characterised in that：Described electric cabinet（8）With temperature controller（3）, start button（4）, stop button（5）, electric fuse（6）And on and off switch（10）Connect respectively.

3. a kind of safety heat-preserving type temperature control sofa as claimed in claim 1, it is characterised in that：Described sofa seat-box（2）Interior filling flame-retardant intumescent insulation material.

4. a kind of safety heat-preserving type temperature control sofa as claimed in claim 1, it is characterised in that：Described cover slip（7）At least 2, cover slip（7）It is provided with boss（71）And hole slot（72）.

5. a kind of safety heat-preserving type temperature control sofa as claimed in claim 1, it is characterised in that：Described electric cabinet（8）Control circuit is provided with inside.

6. a kind of control circuit of safety heat-preserving type temperature control sofa as claimed in claim 5, it is characterised in that：Described control circuit includes three-level temperature control protection circuit and load driving circuits, and wherein first class of protection circuit includes relay KR, start button ST, stop button SP, miniature transformer T₁, temperature detect switch (TDS) group KSD₁；Safe secondary protection circuit includes relay KR₁, miniature transformer T₂, temperature detect switch (TDS) group KSD₂；Three-level protective circuit includes temperature controller WKR, PTC；Load driving circuits include relay KR₂, heating wire RL, temperature control heating coil W₁、W₂、W₃With toroidal transformer T.

7. a kind of control circuit of safety heat-preserving type temperature control sofa as claimed in claim 6, it is characterised in that：Described temperature detect switch (TDS) group KSD_{1 、}Temperature detect switch (TDS) group KSD₂In temperature detect switch (TDS) be 2-5.

8. a kind of control circuit of safety heat-preserving type temperature control sofa as claimed in claim 6, it is characterised in that：Described relay KR₂For protecting temperature controller WKR；Described relay KR₁It is to prevent temperature controller WKR from carrying out circuit protection after damaging；Described relay KR is to prevent relay KR_{1 、}Temperature controller WKR, relay KR₂Circuit protection is carried out after damage.