CN212457521U - Finned tube type condenser for air conditioner - Google Patents

Abstract

The utility model discloses a fin tubular condenser for air conditioner, it includes discharge, many coils, divides the fluid and sets up fin group on the coil pipe, every be provided with two entries and an export on the coil pipe, every the entry of coil pipe with the discharge is connected, divide the fluid to include a plurality of first minute fluids and a second minute fluid, per two the exit linkage of coil pipe is one first minute fluid, every supercooled pipe of first minute fluid connection, supercooled pipe passes behind the fin group with the second divides fluid connection. The utility model has the characteristics of refrigeration effect is good and improve refrigeration reliability.

Description

Finned tube type condenser for air conditioner

Technical Field

The utility model relates to a fin tubular condenser for air conditioner.

Background

The refrigeration principle of a general refrigerator is that a low-temperature low-pressure gas refrigerant is compressed into high-temperature high-pressure gas by a compressor, then the high-temperature high-pressure gas is condensed into high-temperature high-pressure liquid in a condenser, the high-temperature high-pressure liquid passes through a flow dividing body (also called a liquid dividing head or a flow divider, and generally made of brass) and an expansion valve (also called a throttle valve) and then is changed into low-temperature low-pressure liquid, finally the low-temperature low-pressure liquid is sent into an evaporator, the low-temperature low-pressure liquid absorbs heat in the evaporator and is evaporated into low-temperature low-pressure.

Most of the existing air-conditioning condensers are finned tube condensers (two rows of thirty-two holes), the existing condensers adopt a two-in one-out mode, a refrigerant is condensed in a coil pipe for the first time, the condensed gas-liquid mixed refrigerant directly enters a shunting body, and finally the condensed gas-liquid mixed refrigerant is collected out and enters an expansion valve and an evaporator. However, the condensation method has the following defects: 1. the condensed refrigerant is in a gas-liquid mixed state, so that part of the refrigerant is not refrigerated, and the refrigeration coefficient is influenced. 2. The refrigerant enters the branch fluid and is finally connected with the evaporator through the expansion valve, when the refrigerant is in a gas-liquid mixed state, the phenomenon of flash steam (gas generated by vaporization of a part of liquid refrigerant due to sudden pressure reduction) is easy to occur when the refrigerant flows through the expansion valve, and the flash steam can damage the expansion valve and influence the service life of the expansion valve. Therefore, the finned tube type condenser for the air conditioner, which has a good refrigerating effect and improves the refrigerating reliability, is designed, and has a wide market prospect.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to above-mentioned prior art, the utility model provides a fin tubular condenser for air conditioner that refrigeration effect is good and improve refrigeration reliability.

The utility model provides a technical scheme that its technical problem adopted is:

the utility model provides a finned tube condenser for air conditioner, it includes collector, many coils, reposition of redundant personnel and sets up fin group on the coil pipe, every be provided with two entries and an export on the coil pipe, every the entry of coil pipe with the collector is connected, the reposition of redundant personnel includes a plurality of first minute fluid and a second minute fluid, every two the exit linkage of coil pipe is one first minute fluid, every first minute fluid connection a subcooling pipe, the subcooling pipe passes behind the fin group with the second divides fluid connection.

Furthermore, the middle part of the supercooling pipe is in a snake shape.

Furthermore, each supercooling pipe is provided with a liquid storage dryer.

The utility model has the advantages that:

high-temperature high-pressure gas from the gas collecting pipe flows into the coil pipe and then is subjected to primary condensation, the refrigerant flowing out of the coil pipe flows into the first sub-fluid and flows into the supercooling pipe from the first sub-fluid, and the refrigerant is subjected to secondary condensation in the supercooling pipe, so that the unit mass refrigerating capacity is improved, the unit theoretical work is kept unchanged, the refrigerating coefficient is improved, and the refrigerating effect is good.

By arranging the liquid storage dryer on the supercooling pipe, only the liquid refrigerant flows out of the liquid storage dryer after the refrigerant containing a gas-liquid mixed state enters the liquid storage dryer, and all the refrigerant flowing out of the second sub-fluid and converging into the expansion valve is liquid, so that flash steam is avoided, the expansion valve is prevented from being damaged, the service life of the expansion valve is prolonged, and the reliability of the refrigeration system is improved.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

fig. 2 is a schematic perspective view of the present invention (showing the rear end of the condenser);

FIG. 3 is a schematic perspective view of a condenser according to the prior art;

FIG. 4 is a schematic diagram of the cycle of the coolant in the present invention;

FIG. 5 is a schematic diagram of the cycle of the coolant in the present invention (including a receiver drier);

in the figure, a gas collecting pipe 1, a coil pipe 2, a three-way joint 21, a branch fluid 3, a first branch fluid 31, a second branch fluid 32, a fin group 4, a supercooling pipe 5 and a liquid storage dryer 6.

Detailed Description

For a better understanding of the present invention, embodiments thereof are explained in detail below with reference to the accompanying drawings.

The finned tube condenser for air conditioners shown in fig. 1 to 5 comprises a gas collecting pipe 1, a plurality of coil pipes 2, a flow splitting body 3 and fin groups 4 arranged on the coil pipes 2, wherein the finned tube condenser in the prior art comprises two rows of thirty-two holes as shown in fig. 3. The number of the coil pipes 2 is four, each coil pipe 2 is provided with two inlets and one outlet, as shown in fig. 4, a and a' are inlets of one coil pipe 2, and a "is an outlet of the coil pipe 2. The middle of the coil 2 is connected by a three-way joint 21, and the refrigerant flows in from two openings and flows out from one outlet. The inlet of each coil pipe 2 is connected with the gas collecting pipe 1, in the prior art, the refrigerant directly flows into the flow distribution body 3 after flowing out of the four coil pipes 2, the flow distribution body 3 is also called as a liquid distribution head and a flow divider, the material is generally brass, the upper end of the flow distribution body 3 is provided with a plurality of inlets, and the bottom end of the flow distribution body is provided with an outlet. One side of the condenser is provided with a fan, and the refrigerant is changed from a gas state to a liquid state after the heat exchange process in the coil 2 is completed. However, the refrigerant flowing out of the flow dividing body 3 is not completely liquid but may contain a part of gas due to environmental and equipment influences. The mixed gas-liquid refrigerant does not completely dissipate heat, so that part of the refrigerant is not utilized, and the later-stage refrigeration effect is poor. And when the refrigerant is in a gas-liquid mixed state, flash steam can appear when the refrigerant flows into an expansion valve (not shown in the attached drawing) in the later period, so that the expansion valve is easy to damage, the service life of the expansion valve is shortened, and the reliability of the refrigeration system is reduced.

As shown in fig. 1 and 2, the divided fluid 3 includes a plurality of first divided fluids 31 and a second divided fluid 32, and the number of the first divided fluids 31 in fig. 1 is two. The outlets of every two coils 2 are connected with one first sub-fluid 31, each first sub-fluid 31 is connected with one supercooling pipe 5, and two ends of each supercooling pipe 5 are exposed outside, as shown in fig. 2 and fig. 4, the middle part of each supercooling pipe 5 is snakelike to pass through the fin group 4 for multiple times, two ends of each supercooling pipe 5 are respectively connected with the first sub-fluid 31 and the second sub-fluid 32, and refrigerant does not directly flow into an expansion valve in a refrigeration system after flowing out of the first sub-fluid 31, and continues to exchange heat in the supercooling pipe 5 to perform secondary supercooling. The refrigerating capacity per unit mass is improved, and the unit theoretical work is kept unchanged, so that the refrigerating coefficient is improved, and the refrigerating effect is good.

In order to avoid that the refrigerant entering the branch fluid 3 is in a gas-liquid mixed state, a liquid storage dryer 6 is arranged on each supercooling pipe 5, the liquid storage dryer 6 is vertically arranged, the refrigerant flowing out of the liquid storage dryer 6 is liquid, and the refrigerant converging into the expansion valve is prevented from generating flash steam.

The refrigerant flows out of the expansion valve, becomes a low-temperature low-pressure liquid, flows into an evaporator (not shown), absorbs heat in the evaporator, and evaporates into a low-temperature low-pressure vapor, thereby completing the refrigeration cycle. When the refrigerant is completely in a liquid state, more heat can be absorbed in the evaporator in the process of converting the liquid state into the gas state, and the refrigeration effect is better.

It should be noted that although the present specification describes embodiments, not every embodiment includes only a single technical solution, and such description of the specification is only for clarity, and those skilled in the art should take the specification as a whole, and the technical solutions in the embodiments may be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims (3)

1. The utility model provides a finned tube condenser for air conditioner, it includes collector, many coils, reposition of redundant personnel and sets up fin group on the coil pipe, every be provided with two entrances and an export on the coil pipe, every the entry of coil pipe with the collector is connected, its characterized in that: the sub-fluid comprises a plurality of first sub-fluids and a second sub-fluid, outlets of every two coils are connected with one first sub-fluid, each first sub-fluid is connected with one supercooling pipe, and the supercooling pipes penetrate through the fin groups and then are connected with the second sub-fluid.

2. A finned tube condenser for an air conditioner as claimed in claim 1 wherein: the middle part of the supercooling pipe is in a snake shape.

3. A finned tube condenser for an air conditioner as claimed in claim 1 wherein: each supercooling pipe is provided with a liquid storage dryer.

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