CN204726184U - A DC Electric Air Conditioning System for Locomotives - Google Patents

Abstract

The utility model relates to a DC electric air conditioning system for locomotives, which includes a bottom shell and an upper cover made of stainless steel, on which an evaporator assembly, a condenser assembly, an electric compressor, a throttling element, a pipeline and an electrical control assembly are arranged, wherein the compressor is a DC horizontal electric compressor, the evaporator assembly is a parallel double-circuit single-body structure, and the condenser assembly is a parallel double-circuit double-body structure. The beneficial effect achieved by the utility model is that the DC electric air conditioning system can directly use the DC power on the locomotive to work without passing through an intermediate power inverter, which is more efficient and energy-saving.

Description

A DC Electric Air Conditioning System for Locomotives

Technical field:

The utility model relates to the technical field of automobiles, in particular to a DC electric air-conditioning system for locomotives.

Background technique:

There are mainly two types of power supply systems on locomotives: 600VDC and 110VDC, but these two types of voltages are not suitable for common electrical components. The phase inverter power supply is converted into three-phase 380VAC/50Hz alternating current, and then the air conditioning system is designed and manufactured in the alternating current system. This application method will add a group of three-phase inverter power supply, which increases the conversion energy efficiency loss, cost and the number of faulty components. Compared with the air-conditioning system, this type of three-phase inverter power supply has a short service life, is a vulnerable part, and has high maintenance costs. The market is in urgent need of a direct-current electric air-conditioning system for locomotives that can be used directly.

Utility model content:

The purpose of the utility model is to overcome the above-mentioned shortcomings of the prior art, provide a DC electric air-conditioning system for locomotives, and solve the above-mentioned problems.

The technical solution adopted by the utility model to achieve its purpose is: a DC electric air-conditioning system for locomotives, including a stainless steel bottom shell and an upper cover, and an evaporator assembly, a condenser assembly, an electric compressor, and an evaporator assembly for throttling are arranged on the bottom shell. capillary elements, copper tubes and electrical control components, wherein: the compressor is a DC electric compressor.

Because the product of the present invention is used in specific occasions, in order to meet the requirements of anti-rust, anti-acid and alkali, anti-vibration, etc., the bottom shell and the upper cover are made of stainless steel.

The inside of the machine is divided into two areas, one area is the evaporation room, the other area is the condensation room, and the two areas are partitioned by partitions. In the evaporation chamber, an evaporator assembly is arranged, including an evaporator and an evaporation fan. A water tank is arranged at the bottom of the evaporator. In order to avoid water leakage, the installation plane of the evaporation fan is higher than the string of the tank. The bottom surface of the evaporation chamber is arranged with an air return port and an air outlet, wherein the return air port is between the evaporator and the partition.

In order to improve the evaporation efficiency, the evaporator is set as a parallel double-circuit single structure.

In the space above the return air outlet, an electric control box is arranged. The electric control box is set in this area, which is conducive to the heat dissipation of electronic components, and the humidity in this area is relatively low. In order to make use of electrical components for maintenance, the electric control box is set as an integral detachable structure.

The electrical control box is equipped with step-down power supply (for low-power low-voltage fan and control system power supply), electric compressor driver, relay, anti-reverse connection device and other electrical components.

In order to achieve the purpose of heat insulation, the indoor surface is provided with heat insulation cotton.

In the condensing room of another area in the machine, there are DC electric compressors, condenser components (including condensers and condensing fans), and corresponding pipelines. The pipelines are connected to the evaporator through the holes set in the partition.

Due to the specific requirements of the air conditioner installation, the condensed air must be discharged upwards, and the condenser is set in a U shape. In order to reduce the difficulty of production, it is set as a parallel double-circuit dual-body structure.

The utility model uses the DC air-conditioning system with the DC horizontal electric compressor as the core to replace the existing AC air-conditioning system, and its beneficial effects are as follows:

1. There is no need for an intermediate power inverter, which is more efficient and energy-saving, and the reduction of electrical components greatly improves the reliability of the system;

2. The design of the horizontal compressor brings convenience to reduce the height of the whole system, which can reduce the total height of the air conditioning system, save space and reduce wind resistance;

The utility model is beneficial to promote the progress of the locomotive air-conditioning technology.

Description of drawings:

Fig. 1, 2 are structural representations of the utility model;

Fig. 3 is the electrical block diagram of the utility model.

Figure 4 is an electrical block diagram of a traditional locomotive air conditioning system.

Detailed ways:

Below in conjunction with specific embodiment and accompanying drawing, the utility model is further described.

As shown in Figures 1 and 2, the DC electric air-conditioning system for locomotives described in the present invention includes a bottom shell 1 made of stainless steel and an upper cover (not shown). , One area is the condensation chamber 9, and the two areas are partitioned by a partition 19. In the evaporation chamber 1 , an evaporator assembly is arranged, including an evaporator 3 and an evaporation fan 10 . A water tank 12 is arranged at the bottom of the evaporator. An air return port 17 and an air outlet 16 are arranged on the bottom surface of the evaporation chamber, wherein the return air port 17 is between the evaporator 10 and the partition plate 19 .

In the upper space of the return air outlet 17, an electric control box 4 is arranged.

Electrical components such as a step-down power supply 5 , an electric compressor driver 14 , and an anti-reverse connection device 13 are arranged in the electric control box 4 .

In the condensation chamber 9 of another area in the machine, a DC electric compressor 6, a condenser assembly (including condensers 7-1 and 7-2 and a condensation fan 8), and corresponding pipelines 20 are arranged, and the pipelines 20 pass through The holes provided by the partition plate 19 are connected with the evaporator 3 .

After the condenser 7-1 and the condenser 7-2 come together, they are throttled by the double capillary throttling element 15 and enter the evaporator 3.

As shown in Figure 3, the power flow direction of the locomotive air-conditioning system shown in the utility model is: 110VDC power supply enters the anti-reverse connection device 13 of the electric control box through a wire, and then directly enters the electric compressor driver 14 all the way, and passes through the step-down power supply 5 all the way. (DC/DC) to supply power to the fan and control panel; the power flow of the traditional locomotive air-conditioning system is shown in Figure 4: 110VDC power enters the inverter through the wire, and enters the air-conditioning system after inverter, all the way to the AC compressor, all the way to the fan, The other way supplies power to the control panel after step-down rectification.

Those skilled in the art do not deviate from the essence and spirit of the utility model, and there are many variants to realize the utility model. The above description is only a preferred and feasible embodiment of the utility model, and does not limit the scope of rights of the utility model. , all equivalent structural changes made by using the description of the utility model and the accompanying drawings are included in the scope of rights of the utility model.

Claims (3)

1. A DC electric air-conditioning system for a locomotive, comprising a bottom shell made of stainless steel and an upper cover, on which an evaporator assembly, a condenser assembly, an electric compressor, a throttling element, pipelines and an electrical control assembly are arranged , characterized in that: the compressor is a DC horizontal electric compressor. 2. The DC electric air-conditioning system for locomotives according to claim 1, characterized in that: the inside of the bottom shell is divided into two areas, one area is an evaporation chamber, the other area is a condensation chamber, and the two areas are separated by a partition; In the evaporation chamber, an evaporator assembly is arranged, and the evaporator assembly includes an evaporator and an evaporation fan; a water tank is arranged at the bottom of the evaporator; an air return port and an air outlet are arranged on the bottom of the evaporation chamber, and the return air port is between the evaporator and the partition; In the upper space of the return air outlet, there is an electric control box; inside the electric control box are arranged a step-down power supply, an electric compressor driver, and an anti-reverse connection device; in the condensing room, there are arranged a DC electric compressor, condenser components and pipelines, The condenser assembly includes a condenser, a condensing fan, and corresponding pipelines, and the pipelines are connected to the evaporator through holes provided in the partition; a throttling element is connected between the condenser and the evaporator. 3. The DC electric air-conditioning system for locomotives according to claim 2, characterized in that: the evaporator assembly is a parallel double-circuit single structure, the condenser assembly is a parallel double-circuit double-body structure, and the throttling element Throttling for double capillary.