Development Status and Development Trend of Parking Air Conditioning
Abstract: Automotive air conditioners are popularized in household cars today, and they have developed to a stage where the market is basically mature. Compared with the booming development of passenger car air conditioners, the development of truck air conditioners is not satisfactory. The rise of 24V parking air conditioners in recent years reflects the strong demand of truck drivers for electric DC air conditioners, and also indicates the development trend of truck air conditioners. This article mainly introduces the development status, problems, and trends of parking air conditioners.
1. Introduction and development status of parking air conditioners
The data shows that if you continue to use the original air conditioner after parking, the fuel consumption will be about 3L per hour, while the price of diesel is about 6.5 yuan per liter, and the cost is close to 20 yuan. The parking air conditioner is powered by electricity, which is economical, energy-saving and environmentally friendly, and also reduces the wear and tear of the engine during long-term idling. "Parking air conditioner" literally refers to the air conditioner used when parking, waiting and resting.
At first, the so-called parking air conditioner was replaced with a large-capacity battery or an external generator on the truck, and then the household air conditioner was retrofitted to the truck and used as an independent air conditioner. However, large-capacity batteries or generators will greatly increase the cost and increase the installation space requirements. At present, the latest parking air conditioner uses a 24V DC battery as the power source. Due to its low energy consumption, the on-board battery has enough power to run the air conditioner continuously for 8 hours, which can meet the daily needs of truck drivers.
As the parking air conditioner market is an emerging industry, it is currently produced and sold as auto parts, and the technology, quality and service are uneven. The following introduces the technical status of parking air conditioners.
1.1 Classification of parking air conditioners
According to the installation method, parking air conditioners are divided into two types: split units and roof mounted units.
The split unit continues the design mode of traditional household air conditioners, the outer unit is installed outside the cab, and the inner unit is installed in the cab. It is the current mainstream installation type. The advantage is that due to the split design, the compressor and the radiator fan are outside the compartment, the operation noise is low, the installation is standardized, fast and convenient, and the price is low.
The roof mounted truck air conditioner, all-in-one machine is installed on the roof, and its compressor, radiator are integrated together. The integration degree is particularly high, the overall appearance is beautiful, and the installation space is saved.
1.2 Parking air conditioner compressor
The compressor is the heart of the air-conditioning system. At present, the parking air-conditioning using the latest technology uses a 24V DC inverter compressor, which includes two-cylinder rolling rotor compressors and scroll compressors.
Rolling rotor compressors are small in size, high in efficiency and stable and reliable in operation. They are widely used in home appliance refrigerators and air conditioners, as well as in the field of refrigeration and refrigeration, as well as in RVs and refrigerated vehicles.
The double-cylinder rolling rotor compressor overcomes the defects of large vibration and large pressure pulsation of the single-cylinder product. In the context of the 200 million era of my country's rolling rotor compressor industry, lower manufacturing costs and higher performance are in the parking air conditioner market. Has a strong competitiveness.
The rolling rotor compressor is a fully hermetic compressor, which also has certain application advantages in terms of refrigerant leakage.
The scroll compressor is a new type of positive displacement compressor developed in the 1980s. As a third-generation compressor, compared with other types of compressors, it has many advantages, such as high efficiency, small torque change, low vibration, low noise, low mass, and small volume.
1.3 Development of Parking Air Conditioning Industry
From 2016 to 2017, electric parking air conditioners ushered in the blue ocean market, and won the highest attention in the industry and market dividends, attracting many companies to produce parking air conditioners and put them on the market.
