Air conditioner energy saving device

Abstract

The utility model discloses an air conditioner energy -conserving device, including STM32 singlechip, temperature sensor, water storage jar, spraying mechanism and power module, temperature sensor installs on the outer surface of air conditioner radiator, is used for real -time detection air conditioner radiator outer surface temperature, the spraying mechanism includes water pump, pipeline and atomizing spray head, atomizing spray head sets up towards air conditioner radiator outer surface, STM32 singlechip includes NTC temperature acquisition feedback circuit, relay interface circuit and water level interface circuit, NTC temperature acquisition feedback circuit is connected with temperature sensor electricity, relay interface circuit and water pump relay electricity are connected, and water level interface circuit and the liquid level inductor electricity are connected in water storage jar. The utility model discloses an air conditioner energy -conserving device can start and stop spraying automatically according to condenser outer surface temperature and water storage capacity, can reduce the waste of water resources, and the cooling efficiency of condenser is higher.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning energy-saving technology, and in particular to an air conditioning energy-saving device. Background Technology

[0002] An air conditioner mainly consists of a compressor, condenser, expansion valve, and evaporator. During operation, gaseous refrigerant is compressed into a high-temperature, high-pressure gas by the compressor and enters the condenser. The high-temperature, high-pressure gaseous refrigerant is heat-exchanged into a low-temperature, low-pressure liquid refrigerant. The liquid refrigerant then passes through the expansion valve. Because the refrigerant flowing out of the expansion valve is restricted, the refrigerant pressure decreases and the temperature continues to drop, becoming a two-phase gas and liquid. It then enters the evaporator, where it undergoes heat exchange and vaporization, becoming a high-temperature, low-pressure gaseous refrigerant that returns to the compressor to continue the cycle.

[0003] Currently, in the entire refrigerant cycle, if the condenser can be effectively cooled, the compressor can operate in a low-energy-consumption state, thus further saving energy. Therefore, some air conditioning energy-saving auxiliary systems have emerged on the market. These systems use a water pump to pump condensate water, which is then sprayed onto the radiator through atomizing nozzles to cool it down.

[0004] However, such systems cannot automatically control their start and stop based on the condenser's surface temperature, thus preventing them from achieving efficient cooling of the condenser. Utility Model Content

[0005] To address the aforementioned problems, this utility model provides an air conditioning energy-saving device.

[0006] The technical solution of this utility model is as follows:

[0007] An air conditioning energy-saving device includes an STM32 microcontroller, a temperature sensor, a water storage tank, a spray mechanism, and a power module. The temperature sensor is installed on the outer surface of the air conditioner radiator to detect the temperature of the radiator's outer surface in real time. The spray mechanism includes a water pump, pipelines, and atomizing nozzles, with the atomizing nozzles facing the outer surface of the radiator. The STM32 microcontroller includes an NTC temperature acquisition feedback circuit, a relay interface circuit, and a water level interface circuit. The NTC temperature acquisition feedback circuit is electrically connected to the temperature sensor to receive temperature data collected by the sensor. The relay interface circuit is electrically connected to a water pump relay to control the relay switch and thus control the start and stop of the water pump. The water level interface circuit is electrically connected to a liquid level sensor in the water storage tank to sense changes in the water level within the tank.

[0008] In a further technical solution, the water storage tank has an inlet 1 connected to the air conditioner condensate pipe and an inlet 2 connected to an external water source.

[0009] In a further technical solution, the spraying mechanism also includes a universal bracket, the top of which is provided with a gripper for holding the atomizing nozzle, the bottom of which is provided with a strong magnet, and the main body of the universal bracket has a bent section, which is a plastic tube structure with pleats in the middle.

[0010] The gripper can be a clamp structure, a small clamp, or a U-shaped retainer, etc., and is used to hold and fix the atomizing nozzle.

[0011] The universal bracket is installed on the air conditioner outdoor unit by attracting it to the air conditioner outdoor unit housing with a strong magnet at the bottom. It can be fixed in a suitable place as needed. Compared with the fixed bracket installation method, it is more versatile and the installation process is more convenient.

[0012] The bending section of the universal bracket has the same structure as the pleated part of the plastic straw in the prior art. It can meet the bending requirements while having a certain degree of rigidity, maintaining the bending state of the bending part, and making it easy to manually adjust the spray direction of the atomizing nozzle as needed. In addition, the bending section can also be made of metal universal tube, which will slightly increase the cost.

[0013] In a further technical solution, the water pump is a diaphragm pump or a bubble pump.

[0014] In a further technical solution, the STM32 microcontroller is designated as STM32f103C8T6.

[0015] In a further technical solution, the power module includes a 12V input to 5V circuit and a 5V to 3V3 circuit, which are used to power the STM32 microcontroller circuit board.

[0016] In a further technical solution, the STM32 microcontroller also includes a filter capacitor for stabilizing the input power supply.

[0017] In a further technical solution, the STM32 microcontroller also includes a chip program download interface for downloading programs to the STM32 microcontroller.

[0018] In a further technical solution, the STM32 microcontroller also includes a reset circuit.

[0019] The beneficial effects of this utility model are:

[0020] The air conditioning energy-saving device of this invention can automatically start and stop the spray according to the condenser surface temperature and water storage volume, which can reduce water waste and improve the cooling efficiency of the condenser. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the air conditioning energy-saving device in Embodiment 1 of this utility model;

[0022] Figure 2 This is the control circuit diagram of the STM32 microcontroller in Embodiment 1 of this utility model;

[0023] Figure 3 This is a circuit diagram of the NTC temperature acquisition and feedback circuit in Embodiment 1 of this utility model;

[0024] Figure 4 This is a circuit diagram of the relay interface circuit in Embodiment 1 of this utility model;

[0025] Figure 5 This is a circuit diagram of the 12V input to 5V power module circuit in Embodiment 1 of this utility model;

[0026] Figure 6 This is a circuit diagram of the 5V to 3V3 power supply module in Embodiment 1 of this utility model;

[0027] Figure 7 This is a circuit diagram of the chip program download interface in Embodiment 1 of this utility model;

[0028] Figure 8 This is a control flowchart of an air conditioning equipment start-up detection element according to an embodiment of the present invention;

[0029] Figure 9 This is a control flowchart of another air conditioning equipment start-up detection element according to an embodiment of the present invention;

[0030] Figure 10 This is a schematic diagram of the air conditioning energy-saving device in Embodiment 2 of this utility model;

[0031] Figure 11 This is the control circuit diagram of the STM32 microcontroller in Embodiment 2 of this utility model;

[0032] Figure 12 This is a circuit diagram of the NTC temperature acquisition and feedback circuit in Embodiment 2 of this utility model;

[0033] Figure 13 This is a circuit diagram of the relay interface circuit in Embodiment 2 of this utility model;

[0034] Figure 14 This is a circuit diagram of the water level interface circuit in Embodiment 2 of this utility model;

[0035] Figure 15 This is a circuit diagram of the 12V input to 5V power module in Embodiment 2 of this utility model;

[0036] Figure 16 This is a circuit diagram of the 5V to 3V3 power supply module in Embodiment 2 of this utility model;

[0037] Figure 17 This is a circuit diagram of the chip program download interface in Embodiment 2 of this utility model.

[0038] Explanation of reference numerals in the attached figures:

[0039] 1. Solenoid valve; 2. Diaphragm pump; 3. Piping; 4. Atomizing nozzle; 5. Temperature sensor; 6. Bubble pump. Detailed Implementation

[0040] The embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0041] Example 1:

[0042] like Figure 1 As shown, an air conditioning energy-saving device includes an STM32 microcontroller (model STM32f103C8T6), a temperature sensor, a spray mechanism, and a power module. The temperature sensor is installed on the outer surface of the air conditioner radiator to detect the temperature of the radiator's outer surface in real time. The spray mechanism includes a diaphragm pump, pipelines, and atomizing nozzles. The inlet of the diaphragm pump is connected to a water softener. The water pressure from the water softener is such that water from a tank placed at a height of 12-15 meters automatically flows into the water pipes on the first floor. The diaphragm pump draws water from the water pipes. The atomizing nozzles are positioned facing the outer surface of the air conditioner radiator and are connected to the outlet of the diaphragm pump via pipelines. The diaphragm pump is a Prandy 1206 (flow...) Flow rate: 0.4-0.7L / min, working pressure: 0.45-0.8MPa), piping is silicone flexible tubing, atomizing nozzle orifice diameter: 0.3-0.5mm, atomization pressure: 0.2-0.3MPa, flow rate: 0.1-0.25L / min, atomization spray angle: 90°-110°; the STM32 microcontroller includes an NTC temperature acquisition feedback circuit and a relay interface circuit. The NTC temperature acquisition feedback circuit is electrically connected to a temperature sensor to receive temperature data collected by the temperature sensor. The relay interface circuit is electrically connected to a water pump relay to control the relay switch and thus control the start and stop of the water pump. The control circuit of the STM32 microcontroller is as follows: Figure 2 As shown, the circuit diagram of the NTC temperature acquisition feedback circuit is as follows: Figure 3 The circuit diagram of the relay interface circuit is shown below. Figure 4 As shown.

[0043] In this embodiment, the power module includes a 12V input to 5V circuit and a 5V to 3V3 circuit, used to power the STM32 microcontroller circuit board, and their circuit diagrams are shown below. Figure 5 and Figure 6 As shown.

[0044] In this embodiment, the STM32 microcontroller also includes a chip program download interface for downloading programs to the STM32 microcontroller, and its circuit diagram is shown below. Figure 7 As shown.

[0045] In this embodiment, as Figure 2 As shown, the control circuit of the STM32 microcontroller also includes a filter capacitor for stabilizing the input power supply.

[0046] In this embodiment, as Figure 2 As shown, the control circuit of the STM32 microcontroller also includes a reset circuit.

[0047] In another embodiment, the spraying mechanism further includes a universal bracket, the top of which is provided with a gripper for holding the atomizing nozzle, the bottom of which is provided with a strong magnet, and the main body of the universal bracket has a bent section, which is a plastic tube structure with pleats in the middle.

[0048] The gripper can be a clamp structure, a small clamp, or a U-shaped retainer, etc., and is used to hold and fix the atomizing nozzle.

[0049] The universal bracket is installed on the air conditioner outdoor unit by attracting it to the air conditioner outdoor unit housing with a strong magnet at the bottom. It can be fixed in a suitable place as needed. Compared with the fixed bracket installation method, it is more versatile and the installation process is more convenient.

[0050] The bending section of the universal bracket has the same structure as the pleated part of the plastic straw in the prior art. It can meet the bending requirements while having a certain degree of rigidity, maintaining the bending state of the bending part, and making it easy to manually adjust the spray direction of the atomizing nozzle as needed. In addition, the bending section can also be made of metal universal tube, which will slightly increase the cost.

[0051] In another embodiment, an air conditioning equipment start-up detection element is also included to detect whether the air conditioning equipment has started. If it has started, the spray mechanism can be controlled to start. The air conditioning equipment start-up detection element mainly consists of a piezoelectric resistor (20-30mm in diameter), a comparator (LM393), an NTC thermistor (10K ohm), an AND gate chip (CD4081), a transistor (S8050), and a relay (12V). Its control flowchart is shown below. Figure 8 As shown.

[0052] In another embodiment, a different air conditioning equipment start-up detection element is used, which mainly consists of a piezoelectric resistor, an NTC thermistor (thermally conductive silicone waterproof treatment), a voltage divider resistor (1K ohm), a diode (IN4148), a resistor (10K ohm), a capacitor (10uF), a Darlington transistor (ULN2003), and a relay (12V). Its control flowchart is as follows. Figure 9 As shown.

[0053] In another embodiment, a timing mechanism is also included, which mainly consists of a CD4017 counter (CD4017BE), an optocoupler isolator (PC817), a solid-state relay (S202S02(2A)), a crystal oscillator (32.768kHz), and an RC absorption circuit (47Ω resistor + 0.1μF / 630V capacitor) for controlling the cyclic start of the spray mechanism. Specifically, it starts in 30 seconds and stops in 10 seconds.

[0054] The control process in the above embodiments is as follows:

[0055] A temperature sensor monitors the temperature data of the outer surface of the air conditioner radiator in real time and feeds it back to the STM32 microcontroller. The STM32 microcontroller determines whether the temperature value is higher than the set temperature. If it is higher than the set temperature, and the air conditioner is detected to be in the start-up state by the air conditioner start-up detection element, the STM32 microcontroller controls the diaphragm pump relay to start the diaphragm pump for spraying. The spraying process is controlled by a timer mechanism to cycle from 30 seconds to 10 seconds. The spraying water is supplied by an external water softener, and the outlet of the water softener is equipped with a solenoid valve that only opens when the air conditioner is in the start-up state.

[0056] Example 2:

[0057] like Figure 10 As shown, this embodiment differs from Embodiment 1 in that a water storage tank is provided. The water storage tank has an inlet 1 connected to the air conditioner condensate pipe and an inlet 2 connected to an external water source. The water in the storage tank is used as the spray water source. The water storage tank is marked with the start water level H1 and the set water level H2. Liquid level sensors are respectively installed at H1 and H2. The STM32 microcontroller also includes a water level interface circuit, which is electrically connected to the liquid level sensor in the water storage tank to sense changes in the water level in the storage tank. In addition, in this embodiment, the water pump is an aerator pump (220V 3-5W 0.3-0.5L / MIN).

[0058] In this embodiment, the control circuit of the STM32 microcontroller is as follows: Figure 11 As shown, the circuit diagram of the NTC temperature acquisition feedback circuit is as follows: Figure 12 The circuit diagram of the relay interface circuit is shown below. Figure 13 As shown, the circuit diagram of the water level interface circuit is as follows: Figure 14 As shown, the circuit diagrams for the 12V input to 5V circuit and the 5V to 3V3 circuit of the power module are as follows: Figure 15 and Figure 16 As shown, the circuit diagram of the chip program download interface is as follows: Figure 17 As shown.

[0059] In addition, this embodiment also includes an air conditioning equipment start-up detection element and a timing control mechanism, with the same structure as described in the above embodiment.

[0060] The control process in this embodiment is as follows:

[0061] A temperature sensor monitors the temperature data of the outer surface of the air conditioner radiator in real time and feeds it back to the STM32 microcontroller. The STM32 microcontroller determines whether the temperature value is higher than the set temperature. If it is higher than the set temperature, and the air conditioner is detected to be in the start-up state by the air conditioner start-up detection element, the water level interface circuit detects the water level in the water tank. If the water level is greater than the start-up water level H1, the STM32 microcontroller controls the bubble pump relay to start the bubble pump for spraying. During spraying, if the detected water level is greater than the set water level H2, spraying continues; if the detected water level is less than the set water level H2, the spraying process is controlled by the timer mechanism to cycle through 10 seconds to start and 10 seconds to stop; if the detected water level is less than the start-up water level H1, spraying stops, and an external water source is used to replenish water. Water replenishment stops when the water level is greater than the set water level H2.

[0062] The above-described embodiments merely illustrate specific implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. An air conditioner energy saving device, characterized by, The system includes an STM32 microcontroller, a temperature sensor, a water storage tank, a spray mechanism, and a power module. The temperature sensor is installed on the outer surface of the air conditioner radiator to detect the temperature of the radiator's outer surface in real time. The spray mechanism includes a water pump, pipelines, and atomizing nozzles, with the atomizing nozzles facing the outer surface of the air conditioner radiator. The STM32 microcontroller includes an NTC temperature acquisition feedback circuit, a relay interface circuit, and a water level interface circuit. The NTC temperature acquisition feedback circuit is electrically connected to the temperature sensor to receive temperature data collected by the sensor. The relay interface circuit is electrically connected to a water pump relay to control the relay switch and thus control the start and stop of the water pump. The water level interface circuit is electrically connected to a level sensor inside the water storage tank to sense changes in the water level inside the tank.

2. The energy saving device for air conditioner according to claim 1, characterized in that, The water storage tank has an inlet 1 connected to the air conditioner condensate pipe and an inlet 2 connected to an external water source.

3. The air conditioning energy-saving device according to claim 1, characterized in that, The spraying mechanism also includes a universal bracket, the top of which is provided with a gripper for holding the atomizing nozzle, the bottom of which is provided with a strong magnet, and the main body of the universal bracket has a bent section, which is a plastic tube structure with pleats in the middle.

4. The air conditioning energy-saving device according to claim 1, characterized in that, The water pump is a diaphragm pump or a bubble pump.

5. The air conditioning energy-saving device according to claim 1, characterized in that, The STM32 microcontroller in question is model STM32f103C8T6.

6. The air conditioning energy-saving device according to claim 1, characterized in that, The power module includes a 12V input to 5V circuit and a 5V to 3V3 circuit, which are used to power the STM32 microcontroller circuit board.

7. The air conditioning energy-saving device according to claim 1, characterized in that, The STM32 microcontroller also includes a filter capacitor for stabilizing the input power supply.

8. The air conditioning energy-saving device according to claim 1, characterized in that, The STM32 microcontroller also includes a chip program download interface for downloading programs to the STM32 microcontroller.

9. The air conditioning energy-saving device according to claim 1, characterized in that, The STM32 microcontroller also includes a reset circuit.

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