CN210267650U - Dehumidifier control circuit applying Hall switch - Google Patents

Abstract

The utility model discloses a dehumidifier control circuit applying a Hall switch, which comprises a main control circuit, a power supply circuit and a Hall switch control circuit, wherein the Hall switch control circuit is connected with the main control circuit through a Hall switch access circuit; the main control circuit comprises a main control chip U2 which is connected with a starting switch; the Hall switch control circuit comprises a Hall chip U1 which is connected with the main control chip through a Hall switch access circuit. The utility model discloses a chip SN8P2501 adopts chip GT3144 as the main control chip, mutually supports the position with the response floater through the hall chip with the magnet that is located on the floater, and then has obtained state such as water tank, no water tank or water full, the working process of rethread main control chip control dehumidifier, and this circuit not only structure is more simple effective, makes control process more accurate moreover, reliable and stable.

Description

Dehumidifier control circuit applying Hall switch

Technical Field

The utility model relates to a small household appliances technical field especially relates to a device that can humidification and purification cavitation.

Background

With the improvement of the living standard, in the daily life of people, besides large household appliances such as air conditioners, televisions, refrigerators and the like, small household appliances such as air blowers, heaters, air purifiers, moisture extractors, sterilizers and the like with different characteristics are also widely used. For example, the dehumidifier is also a current universal device from a traditional special device, and can be used for indoor moisture extraction in air to dry the air and avoid the indoor air stuffiness and mould of clothes, furniture and the like caused by overhigh moisture content. Because the dehumidifier can inhale moisture in the air, consequently need set up the water tank in the dehumidifier and be used for storing liquefied water, however, the tradition generally adopts micro-gap switch to control the operating condition after the water tank water is full, however, the control accuracy that adopts mechanical micro-gap switch is obviously not enough, can often take place the condition that the dehumidifier continues to work after the water is full to spill over. Therefore, people begin to use the hall switch to control the working process of the dehumidifier, however, the circuit design of the dehumidifier which is controlled by the hall switch in the market at present is not scientific and reasonable enough, so that the working state of the dehumidifier is not stable and reliable enough, and the circuit is usually complex.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is the defect of prior art, provide a dehumidifier control circuit of more reliable and stable application hall switch of circuit structure.

In order to solve the technical problem, the utility model adopts the following technical scheme: the utility model provides an use dehumidifier control circuit of hall switch, including master control circuit, power supply circuit, heat dissipation refrigeration circuit and switch tube circuit, heat dissipation refrigeration circuit connects switch tube circuit, and switch circuit connects master control circuit, and master control circuit connects power supply circuit, its characterized in that: the Hall switch control circuit is connected with the main control circuit through a Hall switch access circuit; the main control circuit comprises a main control chip U2 with the model number SN8P2501, and the 4 feet of the main control chip U2 are connected with a starting switch of the dehumidifier; the Hall switch control circuit comprises a Hall chip U1 with the model number GT3144, and is connected with the pin 3 of the main control chip U2 through a Hall switch access circuit; the switch tube circuit is connected with the 7 pins of the main control chip; the magnet is matched with the Hall switch control circuit and arranged on a floating valve device, and the floating valve device is arranged in the water tank to form a structure which can float and sink along with the liquid level in the water tank.

The Hall chip U1 is connected with a plug-in terminal J5, the plug-in terminal J4 of the Hall switch access circuit is connected through the plug-in terminal J5, and the plug-in terminal J4 is respectively connected with the main control chip U2 and the power supply circuit.

The heat dissipation refrigeration circuit comprises a semiconductor refrigeration piece J1 and a heat dissipation fan J2, the model of the semiconductor refrigeration piece J1 is TEC1-12703, the model of the heat dissipation fan J3 is PY-8025, one end of the semiconductor refrigeration piece J1 and the heat dissipation fan J3 are connected with a power supply circuit, and the other end of the semiconductor refrigeration piece J1 and the heat dissipation fan J3 are connected with a switching tube circuit.

The switching tube circuit comprises a switching tube chip U5 with the type number NCE3018, and 4 pins of the switching tube chip U5 are connected with 7 pins of the main control chip U2 through a resistor R1.

The LED driving circuit further comprises a work indicating circuit, wherein the work indicating circuit comprises three light emitting diodes which are sequentially connected in series, the light emitting diodes after being connected in series are connected to a collector of a switch tube Q3, and a base of the switch tube Q3 is connected to a pin 5 of a main control chip U2 through a resistor R8.

The power supply circuit comprises a power input circuit and a voltage stabilizing circuit, wherein the power input circuit is connected with a fuse F1 which adopts a power adapter J2 of DC 9V/2.5A; the voltage stabilizing circuit is provided with a voltage stabilizing chip U3 with the model number of 78L05, the output end of the voltage stabilizing chip U3 outputs a power supply VCC, and a pin 1 of the main control chip U2 is connected with the power supply VCC and used for providing stable voltage for a rear-stage circuit.

Preferably, the start switch is a key switch K1, but a toggle switch, a knob switch, a touch switch, or the like may be used.

When the power adapter J2 is connected to DC9V/2.5A power supply, the voltage and current required by the operation are provided for the product. The product enters a standby state, and at the moment, if the key switch K1 is lightly pressed, the product enters a working state. Main control chip U2 gathers hall switch control circuit's state this moment, and there are 3 kinds through hall switch control circuit temperature control water tank's state: i.e., no water in the tank (or no water in the tank), water in the tank (with the tank not full), and water full. A floating ball is arranged on the water tank and fixed with a magnet, after the water tank is arranged, the Hall switch control circuit just collects the position of the magnet, the state of the water tank can be indirectly judged at the moment, and signals collected by the Hall chip U1 are fed back to the main control chip U2. When no water tank is available or the water tank is full, the magnet is far away from the Hall switch control circuit, the Hall chip U1 feeds back to the main control chip U2 as a high level signal, and the product stops dehumidifying. When the water tank is full, the Hall switch control circuit close to the magnet and the Hall chip U1 feed back to the main control chip U2 to be at a low level, and the product starts to dehumidify.

The utility model discloses a chip SN8P2501 adopts chip GT3144 as the main control chip, mutually supports the position with the response floater through the hall chip with the magnet that is located on the floater, and then has obtained state such as water tank, no water tank or water full, the working process of rethread main control chip control dehumidifier, and this circuit not only structure is more simple effective, makes control process more accurate moreover, reliable and stable.

Drawings

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

Detailed Description

In this embodiment, referring to fig. 1, the dehumidifier control circuit using the hall switch includes a main control circuit, a power supply circuit, a heat dissipation and refrigeration circuit and a switching tube circuit, wherein the heat dissipation and refrigeration circuit is connected with the switching tube circuit, the switching circuit is connected with the main control circuit, and the main control circuit is connected with the power supply circuit; the Hall switch control circuit is connected with the main control circuit through a Hall switch access circuit; the main control circuit comprises a main control chip U2 with the model number SN8P2501, and the 4 feet of the main control chip U2 are connected with a starting switch of the dehumidifier; the Hall switch control circuit comprises a Hall chip U1 with the model number GT3144, and is connected with the pin 3 of the main control chip U2 through a Hall switch access circuit; the switch tube circuit is connected with the 7 pins of the main control chip; the magnet is matched with the Hall switch control circuit and arranged on a floating valve device, and the floating valve device is arranged in the water tank to form a structure which can float and sink along with the liquid level in the water tank.

The Hall chip U1 is connected with a plug-in terminal J5, the plug-in terminal J4 of the Hall switch access circuit is connected through the plug-in terminal J5, and the plug-in terminal J4 is respectively connected with the main control chip U2 and the power supply circuit.

The heat dissipation refrigeration circuit comprises a semiconductor refrigeration piece J1 and a heat dissipation fan J2, the model of the semiconductor refrigeration piece J1 is TEC1-12703, the model of the heat dissipation fan J3 is PY-8025, one end of the semiconductor refrigeration piece J1 and the heat dissipation fan J3 are connected with a power supply circuit, and the other end of the semiconductor refrigeration piece J1 and the heat dissipation fan J3 are connected with a switching tube circuit.

The switching tube circuit comprises a switching tube chip U5 with the type number NCE3018, and 4 pins of the switching tube chip U5 are connected with 7 pins of the main control chip U2 through a resistor R1.

The LED driving circuit further comprises a work indicating circuit, wherein the work indicating circuit comprises three light emitting diodes which are sequentially connected in series, the light emitting diodes after being connected in series are connected to a collector of a switch tube Q3, and a base of the switch tube Q3 is connected to a pin 5 of a main control chip U2 through a resistor R8.

The power supply circuit comprises a power input circuit and a voltage stabilizing circuit, wherein the power input circuit is connected with a fuse F1 which adopts a power adapter J2 of DC 9V/2.5A; the voltage stabilizing circuit is provided with a voltage stabilizing chip U3 with the model number of 78L05, the output end of the voltage stabilizing chip U3 outputs a power supply VCC, and a pin 1 of the main control chip U2 is connected with the power supply VCC and used for providing stable voltage for a rear-stage circuit.

The starting switch is a key switch K1, and a toggle switch, a knob switch or a touch switch can be adopted.

When the power adapter J2 is connected to DC9V/2.5A power supply, the voltage and current required by the operation are provided for the product. The product enters a standby state, and at the moment, if the key switch K1 is lightly pressed, the product enters a working state. Main control chip U2 gathers hall switch control circuit's state this moment, and there are 3 kinds through hall switch control circuit temperature control water tank's state: i.e., no water in the tank (or no water in the tank), water in the tank (with the tank not full), and water full. A floating ball is arranged on the water tank and fixed with a magnet, after the water tank is arranged, the Hall switch control circuit just collects the position of the magnet, the state of the water tank can be indirectly judged at the moment, and signals collected by the Hall chip U1 are fed back to the main control chip U2. When no water tank is available or the water tank is full, the magnet is far away from the Hall switch control circuit, the Hall chip U1 feeds back to the main control chip U2 as a high level signal, and the product stops dehumidifying. When the water tank is full, the Hall switch control circuit close to the magnet and the Hall chip U1 feed back to the main control chip U2 to be at a low level, and the product starts to dehumidify.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the invention, i.e. the present invention is intended to cover all equivalent variations and modifications within the scope of the present invention.

Claims (7)

1. The utility model provides an use dehumidifier control circuit of hall switch, including master control circuit, power supply circuit, heat dissipation refrigeration circuit and switch tube circuit, heat dissipation refrigeration circuit connects switch tube circuit, and switch circuit connects master control circuit, and master control circuit connects power supply circuit, its characterized in that: the Hall switch control circuit is connected with the main control circuit through a Hall switch access circuit; the main control circuit comprises a main control chip U2 with the model number SN8P2501, and the 4 feet of the main control chip U2 are connected with a starting switch of the dehumidifier; the Hall switch control circuit comprises a Hall chip U1 with the model number GT3144, and is connected with the pin 3 of the main control chip U2 through a Hall switch access circuit; the switch tube circuit is connected with the 7 pins of the main control chip; the magnet is matched with the Hall switch control circuit and arranged on a floating valve device, and the floating valve device is arranged in the water tank to form a structure which can float and sink along with the liquid level in the water tank.

2. The dehumidifier control circuit using hall switch of claim 1, wherein: the Hall chip U1 is connected with a plug-in terminal J5, the plug-in terminal J4 of the Hall switch access circuit is connected through the plug-in terminal J5, and the plug-in terminal J4 is respectively connected with the main control chip U2 and the power supply circuit.

3. The dehumidifier control circuit using hall switch of claim 1, wherein: the heat dissipation refrigeration circuit comprises a semiconductor refrigeration piece J1 and a heat dissipation fan J2, the model of the semiconductor refrigeration piece J1 is TEC1-12703, the model of the heat dissipation fan J3 is PY-8025, one end of the semiconductor refrigeration piece J1 and the heat dissipation fan J3 are connected with a power supply circuit, and the other end of the semiconductor refrigeration piece J1 and the heat dissipation fan J3 are connected with a switching tube circuit.

4. The dehumidifier control circuit using hall switch of claim 3, wherein: the switching tube circuit comprises a switching tube chip U5 with the type number NCE3018, and 4 pins of the switching tube chip U5 are connected with 7 pins of the main control chip U2 through a resistor R1.

5. The dehumidifier control circuit using hall switch of claim 1, wherein: the LED driving circuit further comprises a work indicating circuit, wherein the work indicating circuit comprises three light emitting diodes which are sequentially connected in series, the light emitting diodes after being connected in series are connected to a collector of a switch tube Q3, and a base of the switch tube Q3 is connected to a pin 5 of a main control chip U2 through a resistor R8.

6. The dehumidifier control circuit using hall switch of claim 1, wherein: the power supply circuit comprises a power input circuit and a voltage stabilizing circuit, wherein the power input circuit is connected with a fuse F1 which adopts a power adapter J2 of DC 9V/2.5A; the voltage stabilizing circuit is provided with a voltage stabilizing chip U3 with the model number of 78L05, the output end of the voltage stabilizing chip U3 outputs a power supply VCC, and a pin 1 of the main control chip U2 is connected with the power supply VCC.

7. The dehumidifier control circuit using hall switch of claim 1, wherein: the starting switch is a key switch K1.

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