JPH0565621U - Vehicle air conditioner filter / separator - Google Patents

Abstract

(57) [Summary] [Objective] To provide a small-sized and inexpensive filter / separator with improved thermal efficiency. [Structure] First between the outer container 10 and the inner container 20
Establish a room. The inner container 20 forms a second chamber.
The first chamber is filled with a coolant. An inlet 12 is provided in the wall of the outer container to communicate the condenser 40 with the first chamber. First end
A first tube 13 is provided through the wall of the inner container, 16 of which is located in the first chamber and whose second end 15 communicates with the expansion valve 50. Filter means between the inlet 12 and the first end 16 of the first tube in the first chamber
11 is provided to filter water and the like carried by the coolant. A second tube 21 is provided having a first end 24 in communication with the evaporator 60 and a second end 26 located in the second chamber. A hook-shaped separation tube 22 is provided within the inner container 20 with the first end 222 located below the second chamber and the second end 23 communicating with the compressor 30. A hole 221 through which the liquid gas can pass to the second chamber is formed at the bottom of the separation tube 22.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a filter / separator for a vehicle (vehicle) air conditioner, and more particularly to a filter / separator that functions as a filter as well as a separator.

[0002]

[Prior Art]

 Conventional vehicle air conditioners include a compressor, a condenser with a cooling fan, a filter for filtering water and other undesirable substances contained in the coolant, an expansion valve, and an evaporator. , A blower, and a separator disposed between the compressor and the condenser to separate the gas coolant and the liquid coolant and prevent the liquid coolant from flowing into the compressor.

[0003]

[Problems to be solved by the device]

 However, reducing the temperature of the coolant exiting the compressor by the condenser cooling fan is not effective. Further, the filter is installed in the engine hood under a high temperature environment, and the temperature inside the filter becomes higher than the atmospheric temperature. Therefore, the temperature of the coolant cannot be lowered effectively and effectively, resulting in poor air conditioning, reduced compressor operating efficiency, and waste of energy. The present invention provides a filter / separator that can reduce and / or solve the above problems.

[0004]

[Means for Solving the Problems]

 The filter / separator according to the present invention comprises an outer container and an inner container contained within the outer container. A first chamber is formed between the outer and inner containers, and a second chamber is formed by the inner container. The first chamber is filled with a coolant. An inlet is formed in the wall of the outer container and connects the condenser with the first chamber. A first tube is provided through the wall of the inner container, the first end of which is located in the first chamber and the second end of which is in communication with the expansion valve. A filter means is provided in the first chamber between the inlet and the first end of the first tube to permit filtration of water and other undesirable materials carried by the coolant. A second tube having a first end in communication with the evaporator and a second end located in the second chamber is provided in the inner container. A substantially hook-shaped separation tube is provided in the inner container, the first end of which is located in the lower portion of the second chamber and the second end of which communicates with the compressor. A hole is formed at the bottom of the separation tube to allow liquid gas to pass through and move to the bottom of the second chamber.

After exiting the evaporator, the gaseous coolant flows through the separation tube and out the second chamber through the second end of the separation tube. The liquid coolant leaks back into the second chamber, absorbs heat from the wall of the second chamber and becomes gaseous, and then flows out of the second chamber through the separation tube. As the heat exchange is carried out on the walls of the second chamber, the temperature of the coolant in the first chamber will decrease more and more and the temperature of the coolant in the second chamber will increase more and more. While the temperature of the coolant flowing into the expansion valve decreases, the temperature of the coolant flowing into the compressor rises, improving thermal efficiency. Therefore, a primary object of the present invention is to provide a filter / separator that further reduces the temperature of the coolant before entering the expansion valve. Another object of the present invention is to provide a filter / separator that increases the temperature of the coolant before it enters the compressor. A further object of the present invention is to provide a small and low cost structure for a vehicle air conditioner.

[0006]

【Example】

 As shown in FIG. 1, a vehicle air conditioner using a filter / separator 1 according to the present invention includes a compressor 30, a condenser 40 having a cooling fan 41, a filter / separator 1, an expansion valve 50, and an evaporator. It has a container 60, a blower 70 for sending in fresh air, and a pipe 80 for connecting the above units to receive a coolant.

As shown in FIG. 2, the filter / separator 1 is provided with an outer container 10 and an inner container 20. A first chamber is formed between the outer and inner containers 10 and 20, and a second chamber is formed by the inner container 20. The first chamber is filled with a cooling agent, which will be described later. An inlet 12 is formed in the wall of the outer container 10 to communicate the condenser 40 with the first chamber. A first pipe 13 is provided through the wall of the inner container 20, a first end 16 of which is located in the first chamber, and a second end 15 of which is in communication with the expansion valve 50. A plurality of heat radiation fins 131 are formed on the outer circumference of the tube 13, which will be described later. A filter means 11 is provided in the first chamber between the inlet 12 and the first end 16 of the first tube 13 to allow filtering of water and other unwanted substances carried by the coolant. ing.

A second tube 21 having a first end 24 in communication with the evaporator 60 and a second end 26 located in the second chamber is provided in the inner container 20. A substantially hook-shaped separation tube 22 is provided in the inner container 20 with the first end 222 located in the lower portion of the second chamber and the second end 23 communicating with the compressor 30. A hole 221 is formed at the bottom of the separation tube 22 to allow liquid gas to pass and move to the bottom of the second chamber, which will be described later. Optionally, an instrument means 14 for checking the pressure of the coolant can be provided on top of the first tube 13.

[0009]

[Operation effect]

 In operation, the coolant exiting the compressor is hot and high pressure. After passing through the condenser 40, the temperature of the coolant is lowered by the cooling fan 41, but the pressure remains the same. The coolant then flows into the first chamber through the inlet 12 and fills the first chamber, in which water and other unwanted substances carried by the coolant are filtered by the filter means 11. After that, the coolant flows through the first pipe 13 and is sent from the filter / separator 1 to the expansion valve 50, where the coolant is transformed into a low pressure, low temperature liquid (see long arrow in FIG. 2). The coolant then flows through the evaporator 60, where it absorbs the heat of the fresh air sent to the vehicle and becomes a high temperature, low pressure gaseous coolant.

Next, the coolant flows into the second chamber via the second pipe 21. The gaseous coolant flows through the separation tube 22 and out of the second chamber through the second end 23 (see the short arrow in Fig. 2). The liquid coolant leaks back to the second chamber, absorbs heat from the wall of the second chamber and changes to a gas coolant, and then flows out of the second chamber through the separation pipe 22 (see the break in FIG. 2). See line arrow).

It can be seen that this process is continuously progressing, and the coolant in the first chamber exchanges heat with the coolant in the second chamber. The temperature of the coolant in the first chamber is considerably “lower” than the temperature of the coolant sent from the compressor, but higher than the temperature of the coolant flowing into the second chamber from the evaporator. Therefore, since the heat exchange is performed on the wall of the second chamber, the temperature of the coolant in the first chamber is further decreased and the temperature of the coolant in the second chamber is further increased. The radiating fins 131 on the first tube 13 further help the heat dissipation of the coolant. It is clear that the temperature of the coolant flowing into the expansion valve decreases, while the temperature of the coolant flowing into the compressor rises, improving the thermal efficiency. Furthermore, the separator and filter of conventional structure are successfully combined in the present invention, so that a small size and low cost structure can be provided.

[Brief description of drawings]

FIG. 1 is a schematic partial cross-sectional view of a vehicle air conditioner using a filter / separator according to the present invention.

FIG. 2 is a sectional view of a filter / separator according to the present invention.

[Explanation of symbols]

 1 Filter / Separator 10 Outer Container 11 Filter Means 12 Inlet 13 First Pipe 15 Second End of First Pipe 16 First End of First Pipe 20 Inner Container 21 Second Pipe 22 Separation Pipe 23 Second of Separation Pipe End 24 First end of second pipe 26 Second end of second pipe 30 Compressor 40 Condenser 50 Expansion valve 60 Evaporator 70 Blower 80 Piping 221 Separation pipe hole 222 First end of separation pipe

Claims (3)

[Scope of utility model registration request] 1. A compressor, a condenser, an expansion valve,
Filter / separator for vehicle air conditioner having an evaporator, a blower for feeding fresh air, and a pipe for connecting the compressor, the condenser, the expansion valve and the evaporator to receive a coolant A first chamber is formed between the outer container and the inner container, a second chamber is formed by the inner container, and the coolant is provided in the first chamber. And an inlet is formed in the wall of the outer container to communicate the condenser with the first chamber, and a first tube is provided through the wall of the inner container, The first end thereof is the first
A second end of which is in communication with the expansion valve and filter means is provided between the inlet and the first end of the first pipe in the first chamber, A first end having a first end in communication with the evaporator and a second end located in the second chamber, wherein the water and other undesirable substances carried by the coolant can be filtered. Two tubes, arranged in an inner container, the first end of which is located in the lower part of the second chamber,
A substantially hook-shaped separation tube having an end communicating with the compressor, and a hole for allowing liquid gas to pass therethrough to the second chamber is formed at the bottom of the separation tube. A filter / separator for a vehicle air conditioner, which comprises: 2. The filter / separator according to claim 1, wherein a plurality of heat dissipating fins are formed on the outer periphery of the first pipe to facilitate heat dissipation of the coolant passing therethrough. 3. The filter / separator according to claim 1, wherein a display means for checking the pressure of the coolant is provided above the first pipe.