KR101094469B1 - Plate heat exchanger with distributor - Google Patents

Abstract

The present invention relates to a plate heat exchanger, and more particularly, to improve heat exchange efficiency by uniformly distributing the heat medium flowing into the plate heat exchanger in each layer between the heat exchange plates. Heat transfer flow paths are formed in each layer of the plates, and the heated / heated heating medium is mutually connected as the flow hole provided at the edge of the heat exchange plate is connected to the external pipe through the socket hole of the cover attached to the outside of the heat exchange plate. In the plate heat exchanger to heat exchange, the inlet side flow hole of the heat medium in the pipe is provided with a distribution port formed with holes of a predetermined interval, the distribution port is characterized in that assembled with the pipe connecting means attached to the socket hole.

Heat exchangers, distributors, flare sockets, plugs, filter nets.

Description

Distributor having a plate heat exchanger

The present invention relates to a plate heat exchanger, and more particularly, to a plate heat exchanger having a distribution port to improve heat exchange efficiency by uniformly distributing the heat medium flowing into the plate heat exchanger in each layer between the heat exchange plates.

In general, the plate heat exchanger is formed by stacking a heat exchange plate of type A and a heat exchange plate of type B having a V-shaped pattern of heat exchange paths so that the heated and heated heating medium flows into the heat passages of each layer to exchange heat with each other. It is.

Conventional technology related to such a plate heat exchanger is the same as the applicant of the present invention by the same applicant of the Korean Utility Model Registration No.0428659 'Heat exchanger plate structure of the plate heat exchanger' or the Korean Patent Registration No.0514696 'Brazing method of the heat exchanger And a heat exchanger brazed by the above method, etc., have already been proposed and known in advance, and a detailed description thereof will be omitted.

1 is a cross-sectional view illustrating the internal structure of a plate heat exchanger according to the prior art, the conventional techniques as described above are introduced through the two side flow holes (4) of the plate heat exchanger (1), as shown in FIG. The heated / heated heating medium is not uniformly introduced into each heat flow path (3a, 3b), causing not only heat concentration but also a major cause of lowering heat exchange efficiency.

In particular, as in the case of a refrigeration air conditioner, if the thickness of the plate heat exchanger is very thick, the high-temperature and high-temperature heat medium (refrigerant) supplied through the flow hole is not evenly distributed and is concentrated on the bottom of the flow hole by the incoming pressure or There was a problem that the inlet heat transfer flow path to the blind area is not supplied smoothly.

In addition to this, a separate strainer (filter) was installed in the pipe connected to the plate heat exchanger to filter foreign matters, but the foreign matter accumulated in the strainer caused frequent failures, but it was difficult to clean and maintain, and so on. There was an unreasonable disadvantage.

In addition, when the pipe joints of the plate heat exchanger and the pipes joined by brazing are damaged or leaked, problems such as deterioration of workability and an increase in additional costs are accompanied by difficult maintenance and repair.

The present invention inserts a distribution pipe into the flow hole of the plate heat exchanger, so that the heated or heated heating medium flowing from the outside through the pipe is uniformly distributed throughout the heat transfer path of each layer and inserted into the flow hole. The purpose is to assemble and disperse the distribution port and the pipe by flare type piping means.

In addition, the present invention has a further object to prevent the inflow of foreign matters by having a filter net at the inlet side of the distribution port provided in the flow hole of the plate heat exchanger.

In the present invention, a heat transfer path is formed in each layer of the heat exchange plates stacked in multiple stages, and a flow hole provided at an edge of the heat exchange plate is connected to an external pipe through a socket hole of a cover attached to the outside of the heat exchange plate. In the plate heat exchanger is a heat exchanger heating / heated heat medium according to each other, the inlet side flow hole of the heating medium is provided with a distribution port formed with holes of a predetermined interval, the distribution port is pipe connection means attached to the socket hole Is assembled with; The pipe connecting means includes a flare socket coupled to the socket hole and extending over an engaging jaw provided at an upper end of the distribution port; A hollow plug which is assembled to the inner female screw of the flare socket and has a lower end pressed against the expansion pipe part; The plate heat exchanger is provided with a distribution port, characterized in that consisting of a flare nut connecting the pipe while being coupled to the flare socket.

In another aspect, the present invention, characterized in that the filter net is provided on the inlet side of the distribution port.

In another aspect, the present invention is characterized in that it comprises a packing that is fitted in close contact with the locking projections.

In addition, the flare socket of the present invention is characterized in that the expansion portion of the pipe in contact with the inclined surface forming an end portion is configured to be in close contact by the flare nut.

According to the present invention, the heat medium flowing into the plate heat exchanger is uniformly supplied to the heat transfer paths of each layer, thereby preventing the phenomenon of locally stagnation or concentration and improving heat exchange efficiency while distributing heat evenly.

In addition, the present invention can be tightly coupled through the configuration of the flare socket / nut and plug attached to the plate heat exchanger to prevent leakage, the reverse is also easy to separate the workability and productivity is excellent, the future maintenance is very easy There is one advantage.

In addition, the present invention is provided with a filtering network to filter the foreign matter in the distribution hole of the flow hole for uniformly distributing the heat medium, thereby providing an effect of preventing a decrease in heat exchange efficiency and damage to the plate heat exchanger due to the inflow of foreign matter. .

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, and embodiments of the present invention are provided to enable those skilled in the art to more easily understand the present invention. In describing the present invention, when it is determined that the detailed description of related known functions or configurations may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

Figure 2 is an exploded perspective view showing the configuration of a plate heat exchanger with a distribution port according to a preferred embodiment of the present invention, Figure 3 is a partial cross-sectional view showing the inside of the plate heat exchanger with a distribution port according to the present invention.

Referring to the drawings, the plate heat exchanger with a distribution port of the present invention, the heat transfer paths (13a, 13b) is formed for each layer of the heat exchange plate 12 stacked in multiple stages, the heat exchange plate 12 As the flow hole 14 provided at the edge portion is connected to the external pipe 100 through the socket hole 17 of the cover 16 attached to the outside of the heat exchange plate, the heated / heated heat medium is heat-exchanged with each other. In the plate heat exchanger, the inlet side flow hole 14 of the heat medium is provided with a distribution port 24 having holes 26 formed at a predetermined interval, and the distribution hole 24 is a socket hole 17. And it is characterized in that assembled with the pipe connection means attached to.

The above is described in more detail as follows.

First, the plate heat exchanger 10 of the present invention stacks a plurality of heat exchange plates 12 in multiple stages to provide a predetermined heat transfer path for each layer, and heated / heated flow holes 14 on both sides of the heat exchange plate. These are formed, respectively, a socket hole 17 communicating with the flow hole is formed in the cover 16 is coupled to the upper and lower portions of the heat exchange plate, the socket hole 17 is a predetermined for connecting the pipe 100 The pipe connecting means is provided.

Here, the flow holes 14 are provided with distribution holes 24 having holes 26 formed at regular intervals, and the distribution holes 24 are respectively provided at the inlet side flow holes of the plate heat exchanger. The heat medium (refrigerant) flowing through the pipe is distributed so as to be uniformly supplied to the heat transfer path of each layer.

The pipe connecting means of the present invention includes a flare socket (20) coupled to the socket hole (17) and spanning the engaging jaw (22a) provided at the upper end of the distribution hole (25); A hollow plug 28 which is assembled to the inner female screw 22 of the flare socket 20 and has a lower end pressed against the expansion pipe 25; The flare nut 30 is coupled to the flare socket 20 to connect the pipe 100.

In other words, the pipe connection means is composed of a flare type (Flare ytpe), which is composed of a flare socket 20, flare nut 30, plug 28 and the like. The flare socket 20 has a male screw 21 formed at an outer side thereof, a female screw 22 formed at an inner side thereof, and a coupling portion 23 formed at a lower portion thereof is attached to the socket hole 17. It is preferable that the flare socket is closely joined by brazing after curling or caulking the inner coupling part 23 into the socket hole.

The distribution port 24 is introduced into the flow hole through the flare socket and the expansion pipe 25 formed in the upper portion is in contact with the bottom surface of the flow hole in a state spanning the lower locking jaw 22a of the female screw, and the plug ( 28 is press-fitted while being assembled to the female screw (22). Although not shown, the plug 28 may be formed in a polygonal inside of the hole or may be fastened or separated by forming a fastening groove.

The plug 28 penetrates the center portion and the tip portion is formed of the inclined surface 28a so that the plug portion 28 is press-closed in close contact with the expansion pipe 25 while being assembled with the female screw and the screw. Herein, in the present invention, the packing 29 is fitted into the expansion pipe 25 of the distribution pipe, and the packing 29 is in close contact with the locking jaw 22a to prevent leakage again.

In the present invention, in connecting the pipe with the flare socket, the flare socket 20 is in contact with the expansion portion 102 of the pipe 100 to the inclined surface (21a) forming the end, the flare nut 30 It is characterized in that it is configured to close by.

In other words, the pipe 100 is connected by the flare nut 30 fastened to the flare socket 20. The flare socket 20 has an end portion of the male screw 21 formed as an inclined surface 21a, and the expansion portion 102 is formed so that the end portion of the pipe 100 corresponds to the inclined surface 21a. As the nut 30 is fastened to the male screw, the expansion part of the pipe is closely attached to the inclined surface to be closely assembled.

4 is a plan view showing a distribution port of the plate heat exchanger according to the present invention in a cross-sectional view. As shown in FIG. 4, the distribution holes 24 are formed such that the holes 26 are formed at the same interval as that of each layer of the heat exchange plates, and the heating medium is supplied to the heat transfer path at the same interval.

The hole 26 is most preferably formed at a predetermined angle A in a diagonal direction from the center toward the heat transfer path so as to be the same as the direction of the heat transfer paths 13a and 13b of the heat exchange plate. More specifically, in the plate heat exchanger 10, the heat transfer paths 13a and 13b are diagonally formed diagonally from the flow hole to increase the heat exchange efficiency, so that the holes 26 of the distribution port 24 are transferred to the heat transfer path. It is intended to smooth the flow of the heat medium by directing in the direction of the formation. To this end, the angle A is preferably within the range of 30 to 50 degrees.

Alternatively, the hole 26 may be formed in an elliptical shape extending laterally.

Figure 4a is a plan view showing another hole of the distribution port provided in the plate heat exchanger according to the present invention.

As shown in FIG. 4A, a plurality of holes 26 of the distribution port may be radially formed from the center of the distribution port 24 so that the heating medium is distributed evenly throughout. Like the corners, it is possible to solve the blind area that is insufficient in the transmission of the heat medium.

5 is an internal cross-sectional view showing another embodiment of the pipe connection of the plate heat exchanger with a distribution port according to the present invention.

In FIG. 5, the flare nut 30 is fastened to the flare socket to fix the expansion portion 25 of the pipe and at the same time, a fixing force is applied to the plug so that the fastening force of the plug is not relaxed. That is, it is suitable when the diameter of the pipe 100 is the same as that of the distribution pipe, and the expansion pipe 102 of the pipe is extended so as to contact the outer surface of the plug by 90 degrees so as to be in close contact with the plug by the fastening force of the flare nut. It is composed.

In the present invention, the filter net 32 is provided on the inlet side of the distribution port 26. That is, the plate heat exchanger of the present invention filters foreign matters and debris contained in the heat medium (refrigerant) introduced into the plate heat exchanger through a pipe by filtering the filter net 32 to clean the inside of the heat exchanger, as well as damage and deterioration of heat exchange efficiency. To prevent it.

More specifically, the filtering net 32 is provided inside the flare socket, and as shown in FIG. 3, it is preferable to be installed at the inlet of the distribution port 24 so as to be fixed by the plug 30 or the filtering net. It is also possible to fix 32 by the expansion pipe 102 of the pipe inside the plug as in FIG.

As described above, the plate heat exchanger with a distribution port of the present invention is provided with a distribution port in the flow hole of the plate heat exchanger so that the heat medium flowing into the heat exchanger is uniformly supplied to the heat transfer path, and the flare socket to the plug and flare Since it is assembled like a nut, each component is very easy to assemble and remove.

In addition, the present invention can easily separate the distribution port 24 and the filter net 30 by loosening the flare nut and plug, as well as the subsequent maintenance is very convenient.

Plate heat exchanger with a distribution port of the present invention is suitable for use in evaporators, condensers, heat pumps (Heatpump) and the like, in particular is very suitable as the evaporator of refrigeration air conditioning equipment.

1 is a cross-sectional view illustrating the internal structure of a plate heat exchanger according to the prior art.

Figure 2 is an exploded perspective view showing the configuration of a plate heat exchanger with a distribution port according to a preferred embodiment of the present invention.

Figure 3 is a partial cross-sectional view showing the interior of the plate-shaped heat exchanger with a distribution port according to the invention.

4 is a plan view showing a distribution port of the plate heat exchanger according to the present invention in a cross-sectional view.

Figure 4a is a plan view showing another hole of the distribution port provided in the plate heat exchanger according to the present invention.

Figure 5 is an internal cross-sectional view showing another embodiment of the pipe connection of the plate heat exchanger with a distribution port according to the present invention.

Claims (5)

Heat transfer passages 13a and 13b are formed in each layer of the heat exchange plates 12 stacked in multiple stages, and a cover in which a flow hole 14 provided at an edge of the heat exchange plate 12 is attached to the outside of the heat exchange plate 12. In the plate heat exchanger in which the heated / heated heat medium is heat-exchanged with each other as it is connected to the external pipe 100 through the socket hole 17 of (16), The inlet side flow hole 14 of the heat medium is provided with a distribution port 24 having holes 26 formed therein, and the distribution port 24 includes pipe connection means attached to the socket hole 17. Assembled; The pipe connection means, A flare socket (20) coupled to the socket hole (17) and having an upper end pipe portion (25) of the distribution hole over the engaging jaw (22a) provided inside; A hollow plug 28 which is assembled to the inner female screw 22 of the flare socket 20 and has a lower end pressed against the expansion pipe 25; Plate-type heat exchanger having a distribution port, characterized in that consisting of the flare nut 30 is coupled to the flare socket 20 and connecting the pipe (100). delete The method of claim 1, Plate-type heat exchanger having a distribution port, characterized in that the filter net 32 is provided on the inlet side of the distribution port (26). The method of claim 1, Plate-type heat exchanger with a distribution port characterized in that it comprises a packing (29) inserted into the expansion pipe portion (25) in close contact with the locking step (22a). The method of claim 1, The flare socket 20 is provided with a dispensing port characterized in that the expansion pipe 102 of the pipe 100 is in contact with the inclined surface (21a) forming an end portion, and is in close contact with the flare nut (30). Plate heat exchanger.

Images