CN210221346U - Control circuit of heat pump water heater - Google Patents
Control circuit of heat pump water heater Download PDFInfo
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- CN210221346U CN210221346U CN201921042445.0U CN201921042445U CN210221346U CN 210221346 U CN210221346 U CN 210221346U CN 201921042445 U CN201921042445 U CN 201921042445U CN 210221346 U CN210221346 U CN 210221346U
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Abstract
The utility model discloses a heat pump water heater control circuit, which comprises a power supply module, a processing module, a relay module, a display module and a plurality of temperature detection modules, wherein each temperature detection module is respectively connected with the input end of the processing module, and the output end of the processing module is respectively connected with the relay module and the display module; the temperature transmission detection module comprises a temperature sensor, a resistor R1 and a capacitor C1, the resistor R1 and the capacitor C1 are connected between a power supply end and a grounding end in series, the output end of the temperature sensor is connected with the connection point between the resistor R1 and the capacitor C1, and the output end of the temperature sensor is connected with the input end of the processing module. The utility model discloses through resistance R1 and electric capacity C1's setting in the temperature-detecting module to judge whether the fault abnormal conditions of opening a way and short circuit appear in temperature sensor, so that the routine maintenance operation.
Description
Technical Field
The utility model relates to a heat pump equipment technical field, more specifically say and relate to a heat pump water heater control circuit.
Background
The common heat pump water heater adopts the working principle that low-temperature heat in air is absorbed, the fluorine medium is gasified, the fluorine medium is compressed by a compressor and then pressurized and heated, the fluorine medium is converted by a heat exchanger to feed water for heating, and the water temperature is heated by the compressed high-temperature heat energy.
At present, the popularity of the heat pump water heater is getting larger, and the manufacturers of the heat pump water heater continuously improve the functions of the heat pump water heater, mainly combine the traditional electric heating function and the solar heating function together. However, the control circuit of the heat pump water heater in the prior art is still imperfect, so that the control effect of the existing heat pump water heater in operation still has defects. The control circuit of the existing heat pump water heater is generally provided with a temperature control function, but the control circuit can only simply detect temperature data and cannot judge whether a temperature sensor breaks down or not.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: a control circuit for a heat pump water heater is provided.
The utility model provides a solution of its technical problem is:
a heat pump water heater control circuit comprises a power supply module, a processing module, a relay module, a display module and a plurality of temperature detection modules, wherein the power supply module is respectively connected with the processing module, the relay module, the display module and each temperature detection module; the temperature transmission detection module comprises a temperature sensor, a resistor R1 and a capacitor C1, the resistor R1 and the capacitor C1 are connected between a power supply end and a grounding end in series, the output end of the temperature sensor is connected with the connection point between the resistor R1 and the capacitor C1, and the output end of the temperature sensor is connected with the input end of the processing module.
As a further improvement of the above technical solution, the power module includes a transformer, a rectifier bridge, a first voltage stabilizing unit and a second voltage stabilizing unit, a secondary winding of the transformer is connected to the rectifier bridge, the rectifier bridge is connected to an input terminal of the first voltage stabilizing unit, an output terminal of the first voltage stabilizing unit is connected to an input terminal of the second voltage stabilizing unit, and an output terminal of the first voltage stabilizing unit and an output terminal of the second voltage stabilizing unit are both used as power supply terminals of the power module.
As a further improvement of the above technical solution, the display module includes a communication chip with a model of MAX485 and a display, and the processing module is in communication connection with the display through the communication chip.
As a further improvement of the above technical solution, the relay module includes a first driver chip with a model number of ULN2003 and a relay, an output terminal of the processing module is connected to an input terminal of the first driver chip, and an output terminal of the first driver chip is connected to an input winding of the relay.
As a further improvement of the above technical solution, the control circuit further includes a protection module, and the protection module is connected to an input end of the processing module.
As a further improvement of the above technical solution, the protection module includes a low-voltage protection switch, a high-voltage protection switch, a water flow protection switch, and a second driving chip with a model of ULN2003, the low-voltage protection switch, the high-voltage protection switch, and the water flow protection switch are respectively connected to an input end of the second driving chip, and an output end of the second driving chip is respectively connected to an input end of the processing module.
The utility model has the advantages that: the utility model discloses a temperature that a plurality of temperature detection module that set up detected heat pump water heater's water tank temperature, coil pipe temperature, external environment temperature and solar energy water tank respectively, through resistance R1 and electric capacity C1's setting in the temperature detection module to judge whether the fault abnormal conditions of opening a way and short circuit appear in temperature sensor, so that the routine maintenance operation.
Drawings
In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures represent only some embodiments of the invention, not all embodiments, and that a person skilled in the art can also derive other designs and figures from these figures without inventive effort.
Fig. 1 is a circuit frame diagram of the present invention;
FIG. 2 is a schematic circuit diagram of a power module and a processing module according to the present invention;
fig. 3 is a schematic circuit diagram of a display module according to the present invention;
fig. 4 is a schematic circuit diagram of the temperature detection module, the relay module and the protection module of the present invention.
Detailed Description
The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and other embodiments obtained by those skilled in the art without inventive labor based on the embodiments of the present invention all belong to the protection scope of the present invention. In addition, all the coupling/connection relationships mentioned herein do not mean that the components are directly connected, but mean that a better coupling structure can be formed by adding or reducing coupling accessories according to specific implementation conditions. All technical characteristics in the invention can be interactively combined on the premise of not conflicting with each other.
Referring to fig. 1 to 4, the present application discloses a heat pump water heater control circuit, a first embodiment of which includes a power module, a processing module, a relay module, a display module, and a plurality of temperature detection modules, wherein the power module is respectively connected to the processing module, the relay module, the display module, and each temperature detection module, each temperature detection module is respectively connected to an input end of the processing module, and an output end of the processing module is respectively connected to the relay module and the display module; the temperature sensing module comprises a temperature sensor, a resistor R1 and a capacitor C1, wherein the resistor R1 and the capacitor C1 are connected between a power supply end and a grounding end in series, the output end of the temperature sensor is connected with a connection point between the resistor R1 and the capacitor C1, the output end of the temperature sensor is connected with the input end of the processing module, and RT 1-RT 4 interfaces in fig. 4 are used for being connected with the temperature sensor. Specifically, in this embodiment, the temperature of the water tank of the heat pump water heater, the temperature of the coil, the temperature of the external environment, and the temperature of the solar water tank are detected by the plurality of temperature detection modules, and whether the temperature sensor has an open circuit or a short circuit fault abnormal condition is determined by the setting of the resistor R1 and the capacitor C1 in the temperature detection modules, so as to facilitate the routine maintenance operation. In addition, in this embodiment, the processing module controls peripheral devices, such as a compressor, a water pump, a water valve, and an electronic expansion valve, in real time through each relay module according to the temperature detection data of each temperature detection module.
Further, in a preferred embodiment, in this embodiment, the power module includes a transformer, a rectifier bridge, a first voltage stabilizing unit outputting a 12V voltage, and a second voltage stabilizing unit outputting a 5V voltage, a secondary winding of the transformer is connected to the rectifier bridge, the rectifier bridge is connected to an input terminal of the first voltage stabilizing unit, an output terminal of the first voltage stabilizing unit is connected to an input terminal of the second voltage stabilizing unit, and an output terminal of the first voltage stabilizing unit and an output terminal of the second voltage stabilizing unit are both used as power supply terminals of the power module. The first voltage stabilizing unit comprises a voltage stabilizer chip with the model of LM7812 and a peripheral circuit thereof, and the second voltage stabilizing unit comprises a voltage stabilizer chip with the model of LM7805 and a peripheral circuit thereof.
Further as a preferred implementation manner, in this embodiment, the display module includes a communication chip with a model of MAX485 and a display, and the processing module is in communication connection with the display through the communication chip.
Referring to fig. 4, further as a preferred embodiment, in this embodiment, the relay module includes a first driver chip with a model number of ULN2003 and a relay, the output terminals of the processing module are respectively connected to the input terminals of the first driver chip, and the output terminals of the first driver chip are respectively connected to the input windings of the relay. The first driving chip of the type is mainly used for improving the driving capability of the processing module and the relay.
Further as a preferred implementation manner, this embodiment further includes a protection module, where the protection module is connected to the input end of the processing module.
Further as a preferred implementation manner, in this embodiment, the protection module includes a low-voltage protection switch, a high-voltage protection switch, a water flow protection switch, and a second driving chip with a model of ULN2003, where the low-voltage protection switch, the high-voltage protection switch, and the water flow protection switch are respectively connected to an input end of the second driving chip, and an output end of the second driving chip is respectively connected to an input end of the processing module. In fig. 4, the CN2 interface is used to connect with a low-voltage protection switch, a high-voltage protection switch and a water flow protection switch. The low-voltage protection switch and the high-voltage protection switch are mainly arranged aiming at a compressor in the heat pump water heater and provide low-voltage protection and high-voltage protection for the compressor. Under normal conditions, a high-voltage protection switch is arranged on the compressor, when the pressure of the compressor exceeds the allowable maximum value, the high-voltage protection switch is switched off, and whether the high-voltage protection of the compressor occurs or not is judged by detecting the on-off condition of the high-voltage protection switch; the compressor is provided with a low-voltage protection switch, the low-voltage protection switch is switched off when the compressor does not operate, the low-voltage protection switch is switched on when the compressor operates for a period of time and the pressure exceeds the allowable minimum value, if the low-voltage protection switch is not switched on, the compressor is abnormal, and whether the low-voltage protection of the compressor occurs or not is judged by detecting the on-off condition of the low-voltage protection switch after the compressor operates for 10 minutes; and rivers protection switch then sets up in the hydrologic cycle pipeline of water tank, and when having rivers to flow in the pipeline, rivers protection switch is closed, otherwise rivers protection switch disconnection, and the water pump starts 25 seconds back, through the break-make condition that detects rivers protection switch, judges whether have rivers to realize the rivers protection.
While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the invention is not limited to the details of the embodiments shown, but is capable of various modifications and substitutions without departing from the spirit of the invention.
Claims (6)
1. The utility model provides a heat pump water heater control circuit which characterized in that: the temperature detection device comprises a power supply module, a processing module, a relay module, a display module and a plurality of temperature detection modules, wherein the power supply module is respectively connected with the processing module, the relay module, the display module and each temperature detection module; the temperature transmission detection module comprises a temperature sensor, a resistor R1 and a capacitor C1, the resistor R1 and the capacitor C1 are connected between a power supply end and a grounding end in series, the output end of the temperature sensor is connected with the connection point between the resistor R1 and the capacitor C1, and the output end of the temperature sensor is connected with the input end of the processing module.
2. The heat pump water heater control circuit according to claim 1, wherein: the power module comprises a transformer, a rectifier bridge, a first voltage stabilizing unit and a second voltage stabilizing unit, wherein a secondary winding of the transformer is connected with the rectifier bridge, the rectifier bridge is connected with the input end of the first voltage stabilizing unit, the output end of the first voltage stabilizing unit is connected with the input end of the second voltage stabilizing unit, and the output end of the first voltage stabilizing unit and the output end of the second voltage stabilizing unit are both used as power supply ends of the power module.
3. The heat pump water heater control circuit according to claim 1, wherein: the display module comprises a communication chip with the model of MAX485 and a display, and the processing module is in communication connection with the display through the communication chip.
4. The heat pump water heater control circuit according to claim 1, wherein: the relay module comprises a first driving chip with the model of ULN2003 and a relay, the output end of the processing module is connected with the input end of the first driving chip, and the output end of the first driving chip is connected with the input winding of the relay.
5. The heat pump water heater control circuit according to claim 1, wherein: the protection module is connected with the input end of the processing module.
6. The heat pump water heater control circuit according to claim 5, wherein: the protection module comprises a low-voltage protection switch, a high-voltage protection switch, a water flow protection switch and a second driving chip with the model number of ULN2003, the low-voltage protection switch, the high-voltage protection switch and the water flow protection switch are respectively connected with the input end of the second driving chip, and the output end of the second driving chip is respectively connected with the input end of the processing module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921042445.0U CN210221346U (en) | 2019-07-04 | 2019-07-04 | Control circuit of heat pump water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921042445.0U CN210221346U (en) | 2019-07-04 | 2019-07-04 | Control circuit of heat pump water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210221346U true CN210221346U (en) | 2020-03-31 |
Family
ID=69936108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921042445.0U Active CN210221346U (en) | 2019-07-04 | 2019-07-04 | Control circuit of heat pump water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210221346U (en) |
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2019
- 2019-07-04 CN CN201921042445.0U patent/CN210221346U/en active Active
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