KR20080026738A - Evaporator - Google Patents

Abstract

An evaporator is provided to prevent the abrupt rise of an internal temperature of a vehicle by using cool air stored in a tube even if an engine is stopped, so that the abrupt rise of refrigerant inside the evaporator. An evaporator includes the first and second tanks, a plurality of tubes, and a plurality of fins. The tanks have at least one chamber and spaced apart from each other by a predetermined distance. The tubes are connected to the first tank or the second tank. The fins are stacked between the tubes. The first tank includes tubes(30a) through which refrigerant flows. The second tank includes cold air accumulation tubes(30b) storing cold accumulation material. The cold accumulation tubes are uniformly arranged at the front surface of the evaporator.

Description

Evaporator

1 is a perspective view showing one embodiment of an evaporator according to the present invention.

2 is a perspective view of a tube according to the present invention;

3 is a cross-sectional view of the plate shown in FIG.

4 is a front view of the evaporator shown in FIG.

5 is a perspective view showing another embodiment of the evaporator according to the present invention.

Figure 6 is an exploded perspective view showing another embodiment of the evaporator according to the present invention.

7 is a front view of the evaporator shown in FIG.

8 is a front view showing another embodiment of the evaporator according to the present invention.

** Description of the symbols for the main parts of the drawings **

10: first tank 20: second tank

30a: refrigerant side tube 30b: cold storage side tube

31 plate 32 hole

33: Bead

40: pin

50: inlet pipe 60: outlet pipe

70: evaporator

The present invention relates to an evaporator in which the coolant is evenly distributed on the front of the evaporator to reduce the temperature deviation of the left and right of the evaporator and to maintain the cooling comfort of the user by increasing the storage efficiency.

In recent years, as the interest in the environment and energy in the automobile industry has increased globally, researches for improving fuel economy have been actively conducted, and research and development for light weight, miniaturization and high functionalization have been steadily made to satisfy various needs of consumers. . In particular, research and development of hybrid vehicles using both power and electric energy are increasing.

The hybrid vehicle often adopts an idle stop / go system that automatically stops the engine when the vehicle stops, such as signal waiting, and restarts the engine by operating the transmission. However, even in the case of the hybrid vehicle, since the air conditioner is operated by the engine, when the engine is stopped, the compressor is also stopped, thereby increasing the temperature of the evaporator, thereby lowering comfort in the vehicle. In addition, since the refrigerant inside the evaporator is easily vaporized even at room temperature, the refrigerant is vaporized for a short period of time when the compressor does not operate, and the engine is operated again, so even if the compressor and the evaporator are operated, the vaporized refrigerant must be compressed and liquefied. Not only does it take a long time, but there is a problem of increasing the overall energy requirement.

In order to solve the above problems, a technology for arranging a cold storage heat exchanger on the downstream side of a conventional evaporator has been disclosed. However, the cold storage heat exchanger is a fin-tube type, and the resistance is increased by the cold storage heat exchanger. There was a problem dropping.

In addition, the evaporator provided in the general air conditioner is the refrigerant is concentrated in the portion close to the inlet pipe and the outlet pipe according to the position of the inlet pipe and the outlet pipe and the left and right vents inside the vehicle as the temperature difference between the left and right increases. The temperature of the air discharged through the difference is also large, there is a problem that the cooling comfort of the passenger falls.

Accordingly, the present invention has been made to solve the above problems, the object of the present invention is to minimize the temperature difference of the air discharged to the left and right vents due to the refrigerant deflection since the coolant is evenly distributed on the front of the evaporator. It is to provide an evaporator with improved heat transfer efficiency by effectively improving the heat storage capacity through conduction through fins.

In addition, another object of the present invention is to maintain the cooling comfort inside the vehicle by preventing the rapid temperature rise in the vehicle interior by using the cold air stored in the tube on the cooler side even when the engine is stopped, and the rapid temperature rise of the refrigerant inside the evaporator In addition, the present invention provides an evaporator that can be rapidly stored in the compressor when it is operated again, thereby minimizing energy and time consumed during recooling.

The evaporator of the present invention for achieving the above object is at least one compartment is formed and the first tank and the second tank are arranged side by side spaced apart; A plurality of tubes connected to the first tank or the second tank; In the evaporator including a plurality of fins stacked between the tube, The evaporator is provided with a refrigerant-side tube through which the refrigerant flows in the first tank and the storage side tube for storing the coolant in the second tank, The accumulator side tube is provided between the refrigerant side tube.

In addition, the coolant side tube is stored evenly distributed on the front of the evaporator is the coolant is stored.

In addition, the evaporator is characterized in that the tube-plate type, and the refrigerant-side tube through which the refrigerant flows and the storage-reduction unit side tube is stored using the same plate, the upper side of the plate or A hole is formed in the lower portion.

Hereinafter, the evaporator of the present invention having the configuration as described above will be described in detail with reference to the accompanying drawings.

The evaporator 70 of the present invention includes a first tank 10 and a second tank 20 in which at least one compartment is formed and arranged side by side at a predetermined distance; A plurality of tubes connected to the first tank 10 or the second tank 20; In an evaporator 70 comprising a plurality of fins 40 stacked between the tubes, a refrigerant side tube 30a is provided in the first tank 10 and a cold storage side tube in the second tank 20. 30b is provided, and the heat storage side tube 30b is provided between the refrigerant side tubes 30a.

The evaporator 70 of the present invention may be manufactured using the plate 31 or may be manufactured by extrusion molding.

In the drawings, the tank formed on the upper portion of the tank formed under the first tank 10 is illustrated as the second tank 20, but the present invention is not limited thereto.

The evaporator 70 of the present invention may be a tube-plate type. Firstly, the tube-plate type evaporator 70 will be described. FIG. 1 is a perspective view showing an embodiment of the evaporator 70 according to the present invention and FIG. The tube shown in FIG. 2 is shown in FIG. 2 and the plate 31 constituting the tube is shown in FIG. 3.

As shown, the evaporator 70 of the present invention is made of the refrigerant side tube 30a and the cold storage side tube 30b using the same plate 31.

Since the plate 31 is used in common, the plate 31 forming the refrigerant side tube 30a and the cold storage side tube 30b can be formed in a single operation, and thus manufacturing is easy.

A second tank 20 having the cold storage side tube 30b and the cold storage side tube 30b has a coolant injection hole (not shown) formed at one side of the second tank 20 and the coolant injection hole Is sealed after the accumulator is filled.

The cold storage part side tube (30b) should be filled with a cool storage material to the extent that can control the flow of the cool storage material according to the running state and temperature of the vehicle.

As shown in FIG. 3, the plate 31 has a bead 33 formed therein and a hole 32 formed at an upper portion or a lower portion thereof to increase heat exchange efficiency. The hole 32 is for the distribution of the refrigerant or the coolant, and when the plate 31 forms the refrigerant-side tube 30a, the hole 32 connects the adjacent tube and the tube to allow the refrigerant to move. When the plate 31 forms the cold storage side tube 30b, the hole 32 allows the cold storage material to flow in accordance with the storage of the cold storage material and the vehicle transportation state.

4 is a front view of the evaporator 70 illustrated in FIG. 1, wherein the evaporator 70 illustrated in FIGS. 1 to 4 is provided with a refrigerant-side tube 30a in a tank formed at an upper portion thereof and accumulates in a tank formed at a lower portion thereof. An embodiment in which the side tube 30b is provided and the coolant side tube 30a and the coolant side tube 30b are alternately provided is shown.

5 is a perspective view showing another embodiment of the evaporator 70 according to the present invention, Figure 6 is an exploded perspective view showing another embodiment of the evaporator 70 according to the present invention. Looking at the case where the evaporator 70 of the present invention is manufactured by extrusion molding, the refrigerant-side tube 30a is provided in the first tank 10 at a predetermined interval, and the cold storage side tube 30b is formed in the first tank 10. Two tanks 20 are provided.

The refrigerant-side tube 30a and the cold storage side tube 30b are connected to the first tank 10 and the second tank 20 by pins 40, respectively, and are connected to the first tank 10 and the first tank 10. 2 The refrigerant communicating with the inside of the coolant and the coolant are not mixed with each other.

7 is a front view of the evaporator 70 illustrated in FIG. 5, the evaporator 70 of the present invention is provided in the evaporator 70 because the accumulator side tube 30b is uniformly distributed over the front surface. It is possible to reduce the problem that the temperature difference of the air discharged to the left and right due to the refrigerant deflection in accordance with the position of the inlet pipe 50 and the outlet pipe 60 can be reduced, thereby keeping the cooling state of the interior of the car comfortable have.

8 is a front view showing another embodiment of the evaporator 70 according to the present invention. FIG. 8 is another embodiment in which two refrigerant-side tubes 30a are provided with one cooler-side tube 30b. The cooler-side tube 30b does not interfere with the refrigerant flow of the refrigerant-side tube 30a. Of course, if the form that can effectively receive the cool air of the refrigerant inside the refrigerant-side tube (30a) can be formed without limitation.

Naturally, the evaporator 70 of the present invention may be formed with various refrigerant passages depending on the position at which the inlet pipe 50 and the outlet pipe 60 are formed.

The present invention is not limited to the above-described embodiments, and the scope of application is not limited, and various modifications can be made without departing from the gist of the present invention as claimed in the claims.

As described above, the evaporator of the present invention evenly distributes the coolant side tubes between the coolant side tubes, thereby minimizing the temperature difference between the air discharged to the left and right according to the refrigerant deflection, and the cold air stored in the coolant side tube when the engine is stopped. By using it to prevent the rapid temperature rise in the vehicle interior can maintain the cooling comfort of the user and has the advantage of saving energy required for re-cooling.

In addition, the evaporator of the present invention is formed integrally with the evaporator and the air-cooled side tube in which the coolant is stored, there is no increase in the air-side resistance, it is not necessary to increase the blowing capacity and to maximize the efficiency of the evaporator to achieve miniaturization of the vehicle There are advantages to it.

Claims (4)

A first tank 10 and a second tank 20 formed with at least one compartment and spaced apart by a predetermined distance; A plurality of tubes connected to the first tank 10 or the second tank 20; In the evaporator 70 comprising a plurality of fins 40 stacked between the tubes, The evaporator 70 is The first tank 10 is provided with a coolant side tube 30a through which a coolant flows and a coolant side tube 30b for storing coolant in the second tank 20. Evaporator, characterized in that the accumulator side tube (30b) is provided between the refrigerant-side tube (30a). The method of claim 1, An evaporator, characterized in that the cold storage part side tube (30b) is stored evenly distributed over the front of the evaporator (70). The method according to claim 1 or 2, The evaporator 70 is characterized in that the tube-plate type, The refrigerant-side tube (30a) through which the refrigerant flows and the cold storage side tube (30b) is stored using the same plate (31) is stored evaporator. The method of claim 3, wherein Evaporator, characterized in that the hole (32) is formed in the upper or lower portion of the plate (31).

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