KR20120080057A - Orifice device for same distribution of flow rate using expansion valve distributor between cooler - Google Patents

Abstract

PURPOSE: An orifice apparatus for equally distributing refrigerants is provided to freely install a cooler connected to an expansion valve by controlling the length of each distribution pipe. CONSTITUTION: An orifice apparatus comprises a pipe body(30), a support unit(40), and a flow control hole(50). Both ends of the pipe body are connected to a distribution pipe(12) and an inlet pipe(22). The support unit is protruded from the outer circumference of the pipe body. Both sides of the support unit contact with the ends part of the distribution pipe and inlet pipe. The flow control hole is bored in a longitudinal direction inside the pipe body. The flow control hole controls the amount of refrigerants by controlling an inner cross section.

Description

Orifice Device for Same Distribution of Flow Rate using Expansion Valve Distributor between Cooler

According to the present invention, when the refrigerant flowing from the expansion valve branches to a plurality of distribution pipes through the distributor of the expansion valve and then flows to each condenser of the cooler, each condenser is adjusted by adjusting the cross-sectional area of the internal flow control hole according to the length of each distribution pipe. It relates to an orifice device that can equalize the flow amount of the refrigerant flowing into the.

In general, a refrigeration air conditioner is a compressor for compressing a low-temperature low-pressure gas phase refrigerant into a high-temperature high-pressure gas phase refrigerant, a condenser for condensing the high-temperature high-pressure gas phase refrigerant from the compressor into a liquid refrigerant at room temperature and high pressure, and flows out of the condenser The liquid refrigerant at room temperature and high pressure is subjected to a repetitive circulation of a capillary tube which is reduced in pressure while passing through a small tube having a large resistance, and a refrigerant vaporized by the capillary tube is cooled by using latent heat of evaporation. The capillary tube includes a device such as an expansion valve that regulates and supplies an appropriate refrigerant flow rate in response to a change in cooling load.

In the refrigerating cycle of the conventional refrigeration air conditioner, in the case of the above-described expansion valve exerts an expansion function to change the high temperature and high pressure liquid refrigerant moved from the condenser to the liquid and vapor state at low temperature and low pressure, the capacity of the refrigeration air conditioner Since the number of the condenser of the cooler increases as the size increases, a distributor for dividing and flowing the refrigerant into a cooler including a plurality of condensers is required.

However, in the case of the distributor consisting of a plurality of distribution pipes, when the plurality of distribution pipes are connected to the inlet pipe of each condenser to flow the refrigerant, the cross-sectional area of each distribution pipe is the same, so the length of the pipe to the cooler (each minute A difference occurs in the flow rate flowing along the length of the pipe), which causes a difference in the flow rate flowing into each condenser, resulting in a decrease in cooling efficiency.

Accordingly, there is a need to develop a device capable of preventing a decrease in cooling efficiency by adjusting the flow rate of the refrigerant flowing in a branch between the expansion valve distributor and the cooler for refrigeration and air conditioning.

The present invention has been made to solve the above problems, an object of the present invention is formed between the distribution pipe is formed in the distributor of the expansion valve for branching the flow refrigerant to a plurality, and the inlet pipe of the plurality of condenser installed inside the cooling In order to install the orifice device of the present invention to connect to each other, the length of each distribution pipe and the synthetic flow resistance of the orifice device by installing the same, the internal cross-sectional area of each orifice device is adjusted differently according to the length of the distribution pipe The present invention provides an orifice device for uniformly distributing a refrigerant between an expansion valve distributor and a cooler for refrigeration and air conditioning, which can prevent a decrease in cooling efficiency of the refrigeration and air conditioning device.

Other objects and advantages of the invention will be described below and will be appreciated by the embodiments of the invention. Furthermore, the objects and advantages of the present invention can be realized by means and combinations indicated in the claims.

The present invention is a means for solving the above problems, branched through a plurality of distribution pipes 12 of different lengths through the expansion valve distributor 11, and flows to the condenser 21 through the inlet pipe 22 In the orifice device for equalizing the flow flow rate of each refrigerant to be equalized, it is provided at the connection portion of the distribution pipe 12 and the inlet pipe 22, both ends of the distribution pipe 12 and the inlet pipe 22 An internal tube 30 installed in the inner tube; A support portion 40 protruding from the outer periphery of the inner tube body 30 and having end portions of the distribution pipe 12 and the inflow pipe 22 in contact with both sides; A flow rate adjustment hole 50 formed in the longitudinal direction of the inner tube body 30 so as to control the flow rate of the flow refrigerant by adjusting the inner cross-sectional area; Characterized in that consists of.

In addition, the flow rate adjusting hole 50 is characterized in that the cross-sectional area is differently adjusted so that the flow rate of each refrigerant flowing into the plurality of condensers 21 is uniformly distributed.

In addition, the support 40 is brazed around the outer circumference (B) in which the distribution pipe 12 and the inlet pipe 22 is in contact, so that the distribution pipe 12 and the inlet pipe 22 are connected and fixed to each other. It is characterized by.

In addition, the inner tube 30 is formed by forming a male thread 31 on the outer periphery of both ends so as to be screwable with the female thread 32 formed on the inner circumference of the distribution pipe 12 and the inlet pipe 22. The pipe 12 and the inlet pipe 22 is characterized in that the connection is fixed to each other.

In addition, the flow rate adjusting hole 50 has an inner diameter (D) gradually increases toward both ends at the stop portion, the inner circumference has a curved shape.

In addition, the flow rate adjusting hole 50 is bent in both sides of the stop portion in an angular form, the diameter (D) is gradually increased toward both sides of the stop portion, the diameter (D) of both ends of the distribution pipe 12 and the inlet pipe ( It is characterized in that it becomes equal to the inner diameter (d) of 22).

In addition, the support portion 40 is formed by protruding the fitting piece 41 around one circumferential surface, it is characterized in that the corresponding coupling to the inlet groove 42 formed at the end of the distribution pipe 12 or the inlet pipe 22 It is done.

As described above, the present invention has the effect of allowing the refrigerant of the same flow rate to flow to a plurality of condensers regardless of the length of each distribution pipe.

In addition, the present invention has the effect of preventing the cooling efficiency of the refrigerating and air conditioning apparatus from being lowered by flowing a refrigerant having the same flow rate through each condenser of the cooler.

In addition, the present invention can use the distribution pipe / inlet pipe of the same cross-sectional area, there is an effect that can be used by standardizing the condenser.

In addition, according to the present invention, the length of each distribution pipe is adjustable differently, so that the installation position of the cooler connected to the expansion valve is free.

In addition, the present invention is easy to manufacture or processing by implementing a variety of shapes of the internal flow control hole of the orifice device is effective.

In addition, the present invention has an effect of facilitating fastening between the pipes by fitting the distribution pipe of the distributor and the inlet pipe of the condenser by brazing, screwing, or washer type through the orifice device.

1 is a conceptual diagram of an embodiment showing a state in which the orifice device according to the present invention is applied.
Figure 2 is a perspective view of one embodiment showing that the flow rate adjustment hole is formed in the orifice device according to the present invention.
Figure 3 is a perspective view of one embodiment showing that the screw fastening is configured in FIG.
Figure 4 is a perspective view of one embodiment showing that an angular flow rate adjusting hole is formed in the orifice device according to the present invention.
Figure 5 is a perspective view of one embodiment showing that the screw fastening is configured in FIG.
Figure 6 is a perspective view of an embodiment showing a state in which the fitting piece and the insertion groove is formed in the orifice device according to the present invention.

Before describing in detail several embodiments of the invention, it will be appreciated that the application is not limited to the details of construction and arrangement of components set forth in the following detailed description or illustrated in the drawings. The invention may be embodied and carried out in other embodiments and carried out in various ways. It should also be noted that the device or element orientation (e.g., "front,""back,""up,""down,""top,""bottom, Expressions and predicates used herein for terms such as "left,"" right, "" lateral, " and the like are used merely to simplify the description of the present invention, Or that the element has to have a particular orientation.

The present invention has the following features in order to achieve the above object.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately It should be interpreted in accordance with the meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined.

Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

Hereinafter, an orifice device for uniformly distributing a refrigerant between an expansion valve distributor and a cooler for refrigeration air conditioning according to a preferred embodiment of the present invention will be described in detail with reference to FIGS. 1 to 6.

Orifice device for uniform distribution of the refrigerant between the expansion valve distributor and the cooler for refrigeration air conditioning of the present invention includes an internal tube 30, the support 40, the flow control hole (50).

First, the orifice device (hereinafter referred to as "orifice device 60" for convenience of explanation) for the uniform distribution of refrigerant between the expansion valve distributor and the cooler for refrigeration air conditioning of the present invention is the expansion valve 10 and the cooler ( As installed between the 20, more specifically, the expansion valve 10 is provided with an expansion valve distributor (hereinafter referred to as a distributor 11) to distribute the refrigerant to flow to the cooler 20, The distributor 11 is composed of a plurality of distribution pipes (12).

In addition, the cooler 20 is formed by a plurality of condensers 21 installed therein, and each of the condensers 21 corresponds one-to-one through the respective distribution pipes 12 and inlet pipes 22 described above. By being connected, each refrigerant in the distribution pipe 12 is allowed to flow into the respective condenser 21.

The internal tube 30 is for connecting the distribution pipe 12 of the distributor 11 and the inlet pipe 22 of the condenser 21 described above, and one end of the internal tube 30 is the distribution pipe 12. The other end is installed in the inlet pipe 22, and both ends of the inlet pipe body 30 are fitted to the distribution pipe 12 and the inlet pipe 22, thereby distributing the pipe 12 and the inlet pipe ( 22) It is to enable mutual connection.

However, each end of the distribution pipe 12 and the inlet pipe 22 which are fitted to both ends of the inner tube body 30 is not in contact with each other at the outer periphery of the inner tube body 30, the support portion 40 to be described later To be spaced apart from each other by a predetermined interval to contact the.

In addition, it should be obvious that the internal tube 30 should have the same cross-sectional shape as the distribution pipe 12 and the inlet pipe 22, and the internal tube according to the cross-sectional shape of the distribution pipe 12 and the inlet pipe 22. Naturally, the cross-sectional shape of 30 is also changed.

The support portion 40 is formed to protrude at the outer circumferential edge of the inner tube 30, located in the mutually spaced portion of the distribution pipe 12 and the inlet tube 22 fitted to the outer circumference of both ends of the inner tube 30. do.

That is, when the distribution pipe 12 and the inlet pipe 22 are fitted to both ends of the intake pipe 30 protruding from the support 40, one end of the distribution pipe 12 and one surface of the support 40; The one end of the inflow pipe 22 is in contact with the other surface of the support 40. (At this time, the outer circumference of the support portion 40 and the outer circumference of the distribution pipe 12 and the inlet pipe 22 is located on the same horizontal line.)

In the present invention, the support portion 40 is formed to protrude in the shape of a disc, but also can be changed in various shapes as long as the structure that can be in contact with the distribution pipe 12 and the inlet pipe 22 on both sides according to the user's embodiment. Do.

In addition, the distribution pipe 12 and the inlet pipe 22 coupled to both ends of the inner tube 30 formed with the support part 40 as described above are not removed from each other,

1. Brazing (B) joins the outer circumference of the support portion 40 in which the distribution pipe 12 and the inlet pipe 22 are in contact, or

2. Distribution pipe 12 which forms male thread 31 on the outer periphery of both ends of the inner tube body 30 and couples the female thread thread 32 corresponding to the male thread 31 to both ends of the inner tube body 30; And formed at the inner circumference of one end of the inlet tube 22, so that the distribution tube 12 and the inlet tube 22 are screwed together through the orifice device of the present invention, or

3. To form an inlet groove 42 which is dug a predetermined length in the inner longitudinal direction around one end of the distribution pipe 12 or the inlet pipe 22, and corresponds to the inlet groove 42, and can be fitted When the fitting piece 41 is formed on one surface of the support part 40 (inner groove 42 is formed in the distribution pipe 12, the surface in contact with the distribution pipe 12, the inlet groove 42 is the inlet pipe 22). ), The fitting piece 41 protrudes around the circumferential surface on the surface contacting the inflow pipe 22). For example, if the inlet groove 42 is formed in the distribution pipe 12 and the fitting piece 41 is formed on one surface of the support part 40 so as to be connected to each other, the inlet pipe ( One end portion of the inlet pipe 22 having the internal portion 30 is in contact with the other surface of the support part 40, but an extension portion 43 in which the outer circumference of the distribution pipe 12 extends toward the inlet pipe 22 is provided. It is formed so that the extension portion 43 of the distribution pipe 12 has a form of wrapping the outer periphery of one end of the inflow pipe 22 by a predetermined length.

Then, according to the embodiment of the user, by brazing the outer peripheral portion of the connection portion of the distribution pipe 12 and the inlet pipe 22, the distribution pipe 12 and the inlet pipe 22 can be fixed to each other.

The flow rate adjusting hole 50 is formed in the longitudinal direction in the inner tube 30, the refrigerant flowing through the distribution pipe 12 through the flow rate adjusting hole 50 to the inlet pipe 22 To communicate.

Such, the flow rate adjusting hole 50 by varying the diameter (D) to vary the internal cross-sectional area, (the smaller the diameter (D) of the flow rate adjusting hole 50 is smaller the internal cross-sectional area is natural. Through the orifice device connecting the plurality of distribution pipes 12 and the inlet pipe 22, the length of the passage of the plurality of distribution pipes 12 and the various valves or valves installed in each distribution pipe (12) Even if the numbers and the like are different from each other, the flow rates of the refrigerant flowing into each condenser 21 are uniformly distributed so that they are the same. (Depending on the embodiment of the user, in order to adjust the internal cross-sectional area of the flow control hole 50 of each orifice device differently, the penetration length of the flow control hole 50 may be adjusted.)

For example, when there is a first distribution pipe having a constant pipe length and a second distribution pipe having a pipe length relatively longer than the first distribution pipe, refrigerant having the same flow rate is supplied through the distributor 11. Even if flows into each of the two distribution pipes, the flow rate of the second distribution pipe having a long length is inevitably reduced. Therefore, according to the length of the first and second distribution pipes, the diameter of the flow rate adjusting hole 50 of the first distribution pipe is formed to be relatively smaller than the diameter of the first distribution pipe (meaning that is in common with controlling the flow resistance of the refrigerant). The flow rate adjusting hole 50 of the second distribution pipe is made larger than the diameter of the flow adjusting hole 50 of the second distribution pipe to increase the refrigerant flow amount.

That is, since the distributor 11 is formed of a plurality of distribution pipes 12, each of the distribution pipes 12 connected to the plurality of orifice devices and the flow rate adjusting hole so that the combined flow resistance of the orifice device is the same. The diameter (D) or cross-sectional area of 50 is adjusted. (Of course, the plurality of distribution pipes 12 are the same in diameter, and as shown in Fig. 1, the lengths of the inlet pipes 22 formed in each condenser 21 are also the same.)

In the present invention, the flow control hole 50 as described above is presented in two forms,

1. As the inner diameter (D) of the flow control hole 50 is gradually increased toward the both ends of the flow control hole 50 from the stop of the flow control hole 50, such a flow control hole ( The inner circumference of 50) is to have a curved shape having a gentle sine wave (sine wave) shape, or

2. The interruption portion has a constant diameter (D) by a predetermined length, and both sides of the interruption portion are bent in an angular form toward the inner circumference of the distribution pipe 12 and the inflow pipe 22, so as to face both sides of the interruption portion. The inner diameter D of the flow regulating hole 50 is gradually increased. In this case, the diameter D of both ends of the flow regulating hole 50 is equal to the inner diameter (inner diameter, d) of the distribution pipe 12. It is to be done.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It is to be understood that various changes and modifications may be made without departing from the scope of the appended claims.

10: expansion valve 11: distributor
12: distribution pipe 20: cooler
21: condenser 22: inlet pipe
30: internal stereotype 31: male thread
32: female thread 40: support part
41: fitting 42: inner groove
43: extension 50: flow control hole
60: orifice device
B: brazing d: inner diameter
D: diameter

Claims (7)

Branched into a plurality of distribution pipes 12 of different lengths through the expansion valve distributor 11, for uniform distribution of the refrigerant to equalize the flow flow rate of each refrigerant flowing through the inlet pipe 22 to the condenser 21 In the orifice device,
Is installed in the connection portion of the distribution pipe 12 and the inlet pipe 22,
An inner tube body 30 of which both ends are installed in the distribution pipe 12 and the inlet pipe 22;
A support portion 40 protruding from the outer periphery of the inner tube body 30 and having end portions of the distribution pipe 12 and the inflow pipe 22 in contact with both sides;
A flow rate adjustment hole 50 formed in the longitudinal direction of the inner tube body 30 so as to control the flow rate of the flow refrigerant by adjusting the inner cross-sectional area;
Orifice device for uniform distribution of refrigerant between the expansion valve distributor and the cooler for refrigeration air conditioning, characterized in that consisting of.
The method of claim 1,
The flow control hole 50 is
In order to uniformly distribute the flow rate of each refrigerant flowing into the plurality of condensers 21,
Orifice device for uniform distribution of refrigerant between the expansion valve distributor and the cooler for refrigeration and air conditioning, characterized in that the cross-sectional area is differently adjusted.
The method of claim 1,
The support 40 is
Brazing around the outer circumference of the distribution pipe 12 and the inlet pipe 22 is in contact (B), expansion pipe for refrigeration and air conditioning, characterized in that the distribution pipe 12 and the inlet pipe 22 is connected to each other and fixed Orifice device for uniform distribution of refrigerant between the valve distributor and the cooler.
The method of claim 1,
The inner tube 30 is
To be screwable with the female thread 32 formed on the inner circumference of the distribution pipe 12 and the inlet pipe 22,
An orifice for uniformly distributing the refrigerant between the expansion valve distributor and the cooler for refrigeration and air conditioning, characterized in that the male thread 31 is formed at both ends of the outer periphery so that the distribution pipe 12 and the inlet pipe 22 are connected to each other. Device.
The method of claim 1,
The flow control hole 50 is
Orifice device for uniform distribution of the refrigerant between the expansion valve distributor and the cooler, characterized in that the inner diameter (D) is gradually increased toward the both ends from the stop portion, the inner circumference has a curved shape.
The method of claim 1,
The flow control hole 50 is
Both sides of the interruption portion is bent in an angular form, and the diameter (D) of the both ends is gradually increased toward both sides of the interruption portion, and the diameter (D) of both ends is equal to the inner diameter (d) of the distribution pipe 12 and the inflow pipe 22 Orifice device for uniform distribution of the refrigerant between the expansion valve distributor and the cooler for refrigeration and air conditioning.
The method of claim 1,
The support 40 is
By protruding the fitting piece 41 around one circumferential surface,
Orifice device for uniform distribution of refrigerant between the expansion valve distributor and the cooler for refrigeration and air conditioning, characterized in that the corresponding coupling to the inlet groove (42) formed at the end of the distribution pipe (12) or inlet pipe (22).

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