CN203132046U - Automatic control device of air humidifier - Google Patents

Abstract

The utility model discloses an automatic control device for an air humidifier, which comprises a first temperature sensor, a second temperature sensor, a liquid level sensor, a single-chip microcomputer, a controllable switch, a water injection switch and an LCD display. Wherein, the first temperature sensor, the second temperature sensor and the liquid level sensor are respectively connected with the input end of the single-chip microcomputer, and the controllable switch, the water injection switch and the LCD display are respectively connected with the output end of the single-chip microcomputer. The utility model obtains the indoor relative humidity by detecting the indoor dry bulb temperature and wet bulb temperature, and can automatically regulate the air output of the humidifier according to the relative humidity, so that the indoor relative humidity is kept in a constant range and reduces unnecessary energy consumption; The utility model can automatically replenish water for the humidifier by detecting the water level in the humidifier, prevent the humidifier from being in a state of water shortage for a long time, and realize the automation and intelligence of the humidifier.

Description

An automatic control device for an air humidifier

technical field

The utility model belongs to the field of household appliances, in particular to an automatic control device for an air humidifier.

Background technique

In the contemporary society where the pace of life is getting faster and faster, it is particularly important for people to adjust the quality of indoor air temperature and humidity, and humidifiers have also emerged in response to extensive demands. The main function of the humidifier is to adjust and increase the indoor humidity. The increase in humidity will make the objects in the room less dry and can eliminate static electricity well. At the same time, people will feel much more comfortable living in a room with better temperature and humidity, which prevents the occurrence of diseases to a certain extent. It has certain health care effects. Therefore, humidifiers are widely used in daily life and industrial production, but the existing humidifiers need to be manually controlled to open and close, manually add water, and do not have the detection of indoor air temperature and humidity. There are excessive humidification and dry burning, which not only negatively affects the indoor air comfort but also poses safety hazards. Therefore, it is very feasible and practical to develop and design a humidifier with low price, low power consumption and automatic control function.

Contents of the invention

Aiming at the deficiencies in the prior art, the purpose of the utility model is to provide an intelligent humidifier capable of intelligent opening and closing, adjustable switch size, automatic water injection and displaying indoor temperature and humidity.

In order to realize above-mentioned task, the utility model adopts following technical scheme to realize:

An automatic control device for an air humidifier, comprising a first temperature sensor used to detect the indoor dry bulb temperature, a second temperature sensor used to detect the indoor wet bulb temperature, a liquid level sensor installed on the side wall of the humidifier water tank, and a single chip microcomputer , the controllable switch used to adjust the air output of the humidifier, the water injection switch installed on the water inlet pipe of the humidifier water tank and the LCD display screen, wherein the first temperature sensor, the second temperature sensor and the liquid level sensor are respectively connected with the input terminal of the single chip microcomputer The controllable switch, the water injection switch and the LCD display are respectively connected with the output end of the single-chip microcomputer.

The utility model also has the following technical characteristics:

Described single-chip microcomputer adopts AT89C51 single-chip microcomputer.

The utility model obtains the indoor relative humidity by detecting the indoor dry bulb temperature and wet bulb temperature, and can automatically regulate the air output of the humidifier according to the relative humidity, so that the indoor relative humidity is kept in a constant range and reduces unnecessary energy consumption; The utility model can automatically replenish water for the humidifier by detecting the water level in the humidifier, prevent the humidifier from being in a state of water shortage for a long time, and realize the automation and intelligence of the humidifier.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of the utility model.

Fig. 2 is a schematic diagram of the working process of the utility model.

Below in conjunction with accompanying drawing and embodiment the concrete content of the present utility model is described in further detail.

Detailed ways

The specific embodiments of the present utility model are provided below, and it should be noted that the present utility model is not limited to the following specific embodiments, and all equivalent transformations done on the basis of the technical solution of the application all fall into the protection scope of the present utility model.

According to the above technical solution, as shown in Figure 1, an automatic control device for an air humidifier includes a first temperature sensor used to detect the indoor dry bulb temperature, a second temperature sensor used to detect the indoor wet bulb temperature, and a humidifier installed The liquid level sensor on the side wall of the water tank of the humidifier, the single chip microcomputer, the controllable switch used to adjust the air output of the humidifier, the water injection switch and the LCD display installed on the water inlet pipe of the humidifier water tank. Wherein, the first temperature sensor, the second temperature sensor and the liquid level sensor are respectively connected with the input end of the single-chip microcomputer, and the controllable switch, the water injection switch and the LCD display are respectively connected with the output end of the single-chip microcomputer.

The single-chip microcomputer adopts AT89C51 single-chip microcomputer, which is dual-in-line, and the internal program code capacity is 4KB. AT89C21 has a total of 40 pins, which can be roughly divided into four categories: power supply pins, clock circuit pins, I/O pins and control line pins.

Both the first temperature sensor and the second temperature sensor are temperature sensors of the DS18B20 type. Wherein, the first temperature sensor is installed on the left side of the surface of the humidifier chassis to detect the indoor dry bulb temperature; the second temperature sensor is installed on the right side of the humidifier chassis surface to detect the indoor wet bulb temperature.

The liquid level sensor adopts the SLM-DH22 horizontal liquid level sensor, which is installed on the side wall of the humidifier water tank to detect the level of the water level inside the water tank.

The LCD display adopts LCD1602 liquid crystal display, which is installed on the upper surface of the humidifier case, next to the humidifier switch and control buttons, and is used to display the indoor temperature and humidity values and the corresponding changes in temperature and humidity values during user operations in real time.

The controllable switch adopts a photoelectric coupling switch, which is composed of a light-emitting diode and a sliding rheostat, and is installed on the upper surface of the humidifier case to adjust the air output of the humidifier in a timely and appropriate amount according to the signal input by the single-chip microcomputer.

The water injection switch adopts a solenoid valve and is installed on the water inlet pipe of the humidifier water tank to control the water in the external water tank to add water to the humidifier water tank.

The electronic components used in the utility model are conventional electronic components in the field, and those skilled in the art can know their specific connection modes according to the technical solution.

The working process of the present utility model is as follows:

As shown in Figure 2, first the liquid level sensor reads out the displayed water level H, and judges whether the water level H is greater than the set minimum water level H ₀ (20% of the height of the humidifier water tank), if the water level in the humidifier is lower than 20%, then The single-chip microcomputer controls the water injection switch to turn on, and the water in the external water tank is automatically injected into the humidifier water tank until the water level rises to H ₁ (80% of the humidifier water tank height), and the water injection stops. After the water injection is completed, the first temperature sensor detects the dry bulb temperature T of the environment, and the second temperature sensor detects the wet bulb temperature TS of the environment. The single-chip microcomputer calculates the relative humidity D according to the dry bulb temperature T and the wet bulb temperature TS, and compares the relative humidity D The size of the set maximum humidity D ₁ (60%), if the relative humidity is higher than 60%, the single-chip microcomputer controls the controllable switch to reduce the air output of the humidifier, if the relative humidity is lower than 40% (D ₀ ), Then the single-chip microcomputer controls the controllable switch to increase the air output of the humidifier. At the same time, the timely temperature and humidity values are displayed on the LCD screen.

Claims (2)

1. An automatic control device for an air humidifier, characterized in that it includes a first temperature sensor for detecting the indoor dry bulb temperature, a second temperature sensor for detecting the indoor wet bulb temperature, and is installed on the side wall of the humidifier water tank The liquid level sensor on the top, the single chip microcomputer, the controllable switch used to adjust the air output of the humidifier, the water injection switch installed on the water inlet pipe of the humidifier water tank and the LCD display screen, among them, the first temperature sensor, the second temperature sensor and the liquid level The sensors are respectively connected with the input ends of the single-chip microcomputer, and the controllable switch, the water injection switch and the LCD display are respectively connected with the output ends of the single-chip microcomputer. 2. The automatic control device of the air humidifier according to claim 1, wherein the single-chip microcomputer adopts an AT89C51 single-chip microcomputer.

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