Detailed explanation of temperature sensor on inverter air conditioner

 Detailed explanation of temperature sensor on inverter air conditioner

The sensors used in inverter air conditioners mainly include indoor ambient temperature sensor, indoor condenser temperature sensor, outdoor ambient temperature sensor, outdoor condenser temperature sensor, and outdoor compressor exhaust pipe temperature sensor.

(1) Indoor ambient temperature sensor

The indoor ambient temperature sensor is usually installed at the air outlet of the indoor unit heat exchanger. It has three main functions: one is to detect the indoor ambient temperature during cooling or heating, and to control the speed and running time of the compressor; Control the working status of the air conditioner in automatic operation mode; the third is to control the speed of the indoor fan.

(2) Indoor Condenser temperature sensor

The Indoor Condenser temperature sensor adopts a metal shell and is installed on the surface of the indoor heat exchanger. It has four main functions: one is overcooling protection during cooling, the other is overheating protection during heating, and the third is to control the speed of the indoor fan motor. The fourth is to assist outdoor defrosting during heating.

(3) Outdoor ambient temperature sensor

The outdoor ambient temperature sensor is installed on the heat exchanger of the outdoor unit through a plastic frame. It has two main functions: one is to detect the outdoor ambient temperature during cooling or heating, and the other is to control the speed of the outdoor fan motor.

(4) Outdoor condenser temperature sensor

The Outdoor condenser temperature sensor is packaged in a metal shell. It is installed on the surface of the outdoor unit heat exchanger. It has three main functions: one is overheating protection during cooling, the other is freezing protection during heating, and the third is control during defrosting. The temperature of the heat exchanger.

（5）Outdoor compressor exhaust pipe temperature sensor

The outdoor compressor exhaust pipe temperature sensor also uses a metal casing, which is installed on the compressor exhaust pipe. Its main functions are two: one is to control the opening of the expansion valve and the compressor by detecting the temperature of the compressor exhaust pipe The second is used for exhaust pipe overheating protection.

 Detailed explanation of temperature sensor on inverter air conditioner

The role of NTC thermistor in Baby Sleeping Monitors

 With the development of science and technology, NTC thermistors are used in all aspects of people’s lives.

For families with children, I believe everyone knows more or less about Baby Sleeping Monitors. The common Baby Sleeping Monitors on the market can send an alarm signal after the baby kicks off the quilt to remind parents to put the quilt on the baby in time. Prevent babies from catching cold and cause fever and colds.

Baby Sleeping Monitors are composed of structure: host (indicator, power switch, alarm film and somatosensory clothing socket inside), receiving clothing and somatosensory clothing (connected to the somatosensory clothing socket with a plug wire). Among them, NTC thermistor, which plays a key role, is connected in series on the underwear of the body-sensitive clothing, front, back, upper and lower parts.

Working principle of Baby Sleeping Monitors: Utilizing the characteristic that the resistance value of NTC thermistor decreases with increasing temperature, an alarm will be issued to remind parents in time when the baby kicks off the quilt and the body feels cold. On the contrary, if the infants and young children wear too much or the quilt is too thick, and the body temperature rises, an alarm will be issued to notify the parents to avoid overheating.

Our company specializes in the research, development and production of NTC thermistors and temperature sensors for nearly 12 years. The following small leather wire NTC thermistors can be used in Baby Sleeping Monitors.

Baby Sleeping Monitors NTC thermistor

Its main features:

1. High measurement accuracy

2. Strict tolerance of resistance and β value.

3. Fast response and small size.

4. It can run stably for a long time.

5. The rated resistance of 25C can be 1kΩ~1000kΩ.

6. Common resistance values ​​at 25℃ are: 1kΩ, 2kΩ, 2.252Ω, 3kΩ, 4.7kΩ, 5kΩ, 6.8kΩ, 10kΩ, 15kΩ, 20kΩ, 30kΩ, 40kΩ, 47kΩ, 50kΩ, 100kΩ, 150kΩ, 1000kΩ, etc.

7. Dissipation factor: ≥3.0mW/C in still air.

8. Thermal time constant: ≤12 seconds in still air.

9. Operating temperature range: -45℃-105℃.

Professional sensor manufacturer - vsec elec

 

NTC temperature sensor production process

Professional sensor manufacturer - vsec.top

Measuring β value of NTC thermistor with constant temperature oil tank

Measuring β value of NTC thermistor with constant temperature oil tank

Place the Vsec elec NTC temperature sensor in a constant temperature oil tank, measure the resistance of the NTC temperature sensor at 25 degrees Celsius and 50 degrees Celsius, and then calculate the β value according to the following formula: β=T1*T2/(T2-T1)*Ln (R1/R2), T1 and T2 in the formula are standard temperature. When the temperature of the constant temperature oil tank is 25 degrees Celsius, the value of T1 is (25+273)K.

What is silicone drum heater?

The silicone drum heater, also known as the oil drum heater, is a particularly soft insulated fixed length heating belt.

Silicone drum heater belt has good waterproof performance. It can be used in the pipeline of industrial equipment or laboratory in humid and non-explosive gas places. The heating, tracing and heat preservation of tank and tank can be directly wound on the surface of the heated part. The installation is simple, safe and reliable.

Using the heating belt of silicone drum heater, the liquid and solidified substances in the barrel can be easily removed by heating, such as adhesives, grease, tar, paint, paraffin, oil and various resin raw materials in the barrel. By heating the barrel, the viscosity of the barrel can be reduced uniformly and the power of the pump can be reduced. Therefore, it is not affected by the season and can be used all the year round.

A sensor is installed on the surface of the heater to directly control the temperature by adjusting the temperature..

Feature

1. It is mainly composed of nickel-chromium alloy wire and insulating material, which has fast heat generation, high thermal efficiency and long service life.

2. The electric heating wire is wound on the alkali-free glass fiber core frame, and the main insulation is silicone rubber, which has good heat resistance and reliable insulation performance.

3. Excellent softness, can be directly wound on the heated device, good contact, and uniform heating.

https://www.vsec.top/what-is-silicone-drum-heater/

ptc heater technology

PTC heater technology and function

The PTC ceramic heater manufactured by the company with patented technology is composed of PTC ceramic heating module and corrugated aluminium strip by high temperature adhesive. This type of PTC heater has the advantages of low thermal resistance and high heat transfer efficiency. It is an electric heater with automatic constant temperature and power saving. One of its prominent features is its safety performance. Under any application conditions, there will be no "red" phenomenon on the surface of heaters such as electric heat pipes, which will cause potential safety hazards such as burns and fires.

The most notable characteristics are:

1. provinces cost, long life.

Without special temperature controllers and thermocouples for temperature feedback, the heater can be heated. Its temperature regulation depends on its own material characteristics, so that the product has a much longer service life than other heaters.

2. safety, green environmental protection.

The design heating temperature of the heater body is below 200 degrees Celsius. In any case, the body is not reddish and has a protective isolation layer. No heat insulation materials such as asbestos are needed for cooling treatment in any application occasion. It is safe to use the heater body without burning or causing fire.

3. save electricity.

Comparing the heating products of electric heat pipe and resistance wire, this product relies on the characteristics of material itself and adjusts its thermal power output according to the change of environmental temperature, so it can optimize and control the energy consumption of heater to a minimum, and the material with high heating efficiency also greatly improves the utilization efficiency of electric energy.
The temperature is fast and when the fan is in trouble, it can also automatically control the temperature and prolong the service life.

A wide range of voltage can be designed between 12V-380V according to need.

It is easy to design, can be designed from small to high power, and the shape can be designed as required.

• non burning, safe and reliable. PTC is not red when exposed to heat.

In medium and small power heating occasions, PTC heater has incomparable advantages over traditional heating components, such as constant temperature heating, no open fire, high heat conversion rate, little influence by power supply voltage, long natural life, etc. The application of PTC heater in electric heating appliances is becoming more and more popular with R&D engineers.

Use attention

(1) PTC heater sheet has the characteristics of automatic constant temperature. It does not need the temperature control system. It can be directly energized by PTC heater sheet.

(2) When PTC heater is used to heat liquid (such as water), the PTC heater will not be damaged after the liquid is dried.

(3) if the PTC heater plate is used to heat the cold air, the PTC heater plate will not be damaged when the wind is not supplied.

(4) the service life is long, and the service life is more than 10 years.

(5) reliable operation, using PTC heater plate internal characteristics of temperature control, will never exceed the temperature.

(6) the working voltage is very wide: when the working voltage changes 2 times, the surface temperature changes very little.

(7) when multiple PTC heater plates are used together, they should be connected in parallel and not connected in series.

(8) different heating conditions make the heating power of PTC heater plate vary greatly.

(9) the heating power is large to small after being energized and finally stabilized. The stable power is related to the operating conditions. If the same PTC heater is used under different conditions, the power may differ several times. The faster the heat dissipation, the greater the stable power; the higher the surface temperature of PTC, the higher the power.

(10) The surface temperature of PTC heater is controlled by PTC itself or by disconnecting circuit, but it can not be controlled by adjusting voltage.

(11) PTC itself has high reliability and long life, but if it is not properly assembled, the power and temperature of the product will be unstable.

(12) when multiple PTC are used together, they should be connected in parallel and not concatenate.

what is wax heater？

Wax heater is a device specially designed for heating dehairing honey wax. Soft or hard, can melt and keep it at the optimum temperature, and it is very convenient. It can be said that wax heater is essential for home beauty.

The structure of wax heater is quite simple. It is generally composed of PTC Heater, LED and Plug. This PTC heater suite is widely used in wax melting equipment, depilator, odor heater and so on.

The characteristics of PTC Heater are:

1.PTC type ceramic heater saves cost and longevity.

Without special temperature controllers and thermocouples for temperature feedback, the heater can be heated. Its temperature regulation depends on its own material characteristics, so that the product has a much longer service life than other heaters.

2.PTC ceramic heater is safe and green.

The heater body is designed to be heated at temperatures below 200 degrees Celsius, under any circumstances.

The body is not red and has protective isolation layer. No application of asbestos and other insulation materials is required in any application.

After cooling treatment, it can be assured that there is no problem of scalding and fire.

3. The PTC ceramic heater saves electricity.

Comparing the heating products of electric heat pipe and resistance wire, this product relies on the characteristics of material itself and adjusts its thermal power output according to the change of environmental temperature, so it can optimize and control the energy consumption of heater to a minimum, and the material with high heating efficiency also greatly improves the utilization efficiency of electric energy.

Wax heater