KR101090224B1 - Heat exchanger - Google Patents

Abstract

The present invention relates to a heat exchanger to selectively control and open and close the flow of the heat exchange medium flowing through the tube to adjust the heat exchange capacity according to the cooling and heating load, more specifically, one distribution hole per tube having a "U" -shaped flow path The heat exchanger has a small temperature difference between the inlet and outlet side and the stepwise temperature difference, and it is possible to control the temperature finely, and the opening and closing method of the distribution hole is a sliding type by the slide valve to simplify the shape of the header and the tank and improve the clamping operation. It's about the flag.

The present invention includes a plurality of tubes 101 having end portions fixed to the upper header 140 and arranged at equal intervals and having a “U” -shaped flow path therein; It is coupled to the upper header 140 and built in the first tank 120 and the first tank 120 having the inlet and outlet pipes 121 and 122 formed on one side thereof, and are arranged to be offset from each other with a predetermined interval on the upper end. A second tank having a pair of plurality of distribution holes 131 and a recovery hole 134 formed at one side thereof, and a partition means 132 for partitioning the heat exchange medium flowing into the tube 101 and the heat exchange medium discharged therein. An upper tank 110 composed of 130; First opening / closing means (160) installed slidably in the upper tank (110) to open and close the pair of distribution holes (131); It is installed rotatably inside the upper tank 110, characterized in that it comprises a control means 170 for operating the first opening and closing means 160 by receiving external power.

Heat exchanger, header, tank, tube, distribution hole, opening and closing means, control means, slide valve, bypass valve

Description

Heat exchanger {HEAT EXCHANGER}

1 is a perspective view showing a general heat exchanger,

2 is a front view showing a conventional heat exchanger,

Figure 3 is a partial perspective view showing the upper side in a conventional heat exchanger

4 is a perspective view of a heat exchanger according to a first embodiment of the present invention;

5 is an exploded perspective view showing a heat exchanger according to a first embodiment of the present invention;

6 is a perspective view showing the bottom of the second tank in the heat exchanger according to the first embodiment of the present invention;

7 is a cross-sectional view taken along the line A-A in FIG.

8 is a cross-sectional view taken along line B-B in FIG. 5;

9a to 9c is an operating state diagram of the heat exchanger according to the first embodiment of the present invention,

10 is a perspective view showing a heat exchanger according to a second embodiment of the present invention;

11 is a cross-sectional view showing a heat exchanger according to a second embodiment of the present invention.

<Description of the code used in the main part of the drawing>

100: heat exchanger 101, 105: tube

101a: entrance 101b: exit

102: heat dissipation fin 103: blank tube                 

110: upper tank 111: inlet passage

112: outlet passage 120: first tank

121: inlet pipe 122: outlet pipe

123,127: pressure guide 125: sealing member

126: protrusion

130: second tank 131: distribution hole

132: partition means 132a: inlet flow path

132b: exit flow path 132c: partition wall

132d, 192: partition wall 133: support protrusion

134: recovery hole 135: partition

136: bypass hole 137: guide

140: upper header 141, 151: tube ball

142, 152: blank tube ball 150: rubber

160: first opening and closing means 161: slide valve

162,181a: gear 163,183a: elastic member

170: control means 171: shaft

172: first gear 173: second gear

174: lever

180: second opening and closing means 181: transfer member

182: connecting member 182a: coupling groove                 

183: bypass valve 183b; Engaging protrusion

190: lower header 191: lower tank

The present invention relates to a heat exchanger to selectively control and open and close the flow of the heat exchange medium flowing through the tube to adjust the heat exchange capacity according to the cooling and heating load, more specifically, one distribution hole per tube having a "U" -shaped flow path The heat exchanger has a small temperature difference between the inlet and outlet side and the stepwise temperature difference, and it is possible to control the temperature finely, and the opening and closing method of the distribution hole is a sliding type by the slide valve to simplify the shape of the header and the tank and improve the clamping operation. It's about the flag.

As is generally known, an air conditioner includes a cooling system and a heating system. The cooling system is a process in which a heat exchange medium discharged by driving a compressor is circulated back to a compressor through a condenser, a receiver dryer, an expansion valve, and an evaporator. It is configured to cool the interior of the vehicle by heat exchange by the evaporator through, the heating system is configured to heat the interior by introducing heat exchange medium (engine coolant) to the heater core.

The condenser, the evaporator, the heater core, and the like, which heat exchange the heat exchange medium, are heat exchangers, and the heat exchanger receives the heat exchange medium, exchanges heat at an appropriate temperature, and then circulates the heat exchange medium.                         

As shown in FIG. 1, the conventional heat exchanger includes a plurality of tubes 5 having both ends fixed to upper and lower headers 1 and 3 and spaced apart from each other by a predetermined interval, and the upper and lower headers 1 and 3, respectively. Upper and lower tanks 7 and 9 are coupled to form passages communicating with the ends of the respective tubes 5, and heat dissipation fins 11 are provided between the tubes 5 to increase the heat dissipation surface area.

The conventional heat exchanger configured as described above has one side in which a heat exchange medium supplied to a passage formed by the upper tank 7 and the upper header 1 is partitioned by a baffle while being mounted in an air conditioner, in particular an automobile air conditioner. After performing heat exchange with the air around the heat exchanger while passing through the tubes (5), the U-turn is made in the passage formed by the lower tank (9) and the lower header (3), this time passing through the other tubes (5) again. The heat exchange is performed and discharged through a passage formed by the upper tank 7 and the upper header 1.

As a conventional heat exchanger having a heat exchange as described above is provided with a heat exchange medium (cooling water of an automobile) regardless of a heating or cooling load, an additional control means is required to arbitrarily adjust the heat exchange capacity according to the heating or cooling load. For example, in the case of a heat exchanger used as a heater core of an automobile, in order to control the heat exchange capacity of the heat exchanger, a method of controlling the air flow through the heat exchanger by adjusting the number of revolutions of the blower or installing a door in front of the heat exchanger come. As described above, controlling the heat exchange force of the heat exchanger by controlling the air volume requires a separate device, so there is a problem in that no reliable control is performed.

Applicants have proposed as shown in Figures 2 and 3 to solve the above problems, the upper and lower headers (1, 3) is fixed at both ends and the tube (5) arranged at equal intervals, and the upper Split supply means (13) connected to the header (1) for supplying heat exchange medium to a specific tube (5), and a lower tank (9) connected to the lower header (3) and in communication with the end of each tube (5). (See Korea Patent Publication No. 170234)

The splitter supply means 13 includes a plurality of connection passages 15 communicating with an upper end of each tube 5 coupled to the upper header 1, and an inlet side of the connection passage 15 is within a predetermined angle range. A main body 17 having a cylindrical heat exchange medium dividing unit 19 formed therein, at least one heat exchange medium supply pipe 21 installed to communicate with the heat exchange medium dividing unit 19 formed at the main body 17, and Rotating member (30) rotatably installed in the heat exchange medium division part (19) and selectively provided with a blocking feather (27) on the rotating shaft (25) for selectively blocking an inlet of the connection passage (15) communicating with the heat exchange medium division part (19). 23 and the cover member 29 supporting the rotating shaft 25 and blocking the heat exchange medium partition 19.

In order to perform heat exchange with the heat exchange medium using the heat exchanger in the above state, first, the heat transfer medium is supplied through the heat exchange medium supply pipe 21 and the rotating member rotatably installed in the heat exchange medium divider 19 ( 23 is rotated according to the load applied to the heat exchanger, and as the rotational member 23 rotates, the blocking feather 27 selectively opens and closes the inlet of the connecting passage 15 to heat exchange the tube 5. Either the medium is supplied or the heat exchange medium is supplied to the whole tube 5.

When the inlet of the connecting passage 15 is formed on both sides, the blocking feathers 27 provided on both sides of the rotating member 23 open the ends of each tube 5 at the same time to exchange heat with some of the tubes 5. The medium can be supplied, and the heat exchange capacity of the heat exchanger can be arbitrarily adjusted because the supply amount of the heat exchange medium can be adjusted by the rotation of the rotating member 23.

As described above, the heat exchange medium can be selectively flowed through each tube 5 of the heat exchanger, and thus its performance can be arbitrarily adjusted to easily cope with heating or cooling loads.

However, the heat exchanger has an advantage of selectively controlling the amount of the heat exchange medium, but the heat exchange medium guided by the blocking feather 27 of the rotating member 23 is biased in the tube row on one side of the heat exchanger, In addition to the deterioration of the mixing performance, there was a problem that it is difficult to finely adjust the temperature due to a large step temperature deviation.

In addition, the heat exchanger has a problem in that the flow path of the heat exchange medium flowing through the tube 5 is one pass type, and the amount of heat dissipation at the inlet side is greater than that at the outlet side, resulting in severe temperature deviations at the inlet and outlet sides. .

An object of the present invention for solving the above problems is to selectively adjust and open and close the flow of the heat exchange medium flowing through the tube to easily control the heat exchange capacity according to the cooling and heating load and to distribute the heat exchange medium evenly in the tube. Therefore, to provide a heat exchanger with improved heat exchange performance.

Another purpose is to configure one distribution hole per tube with U-shaped flow channel, so that the temperature difference of each inlet and outlet is small and the temperature difference by stage is small, and the temperature can be finely controlled. Therefore, to provide a heat exchanger that simplifies the shape of the header and the tank and improves the clamping operation.

The present invention for achieving the above object is fixed to the end of the upper header is arranged at equal intervals and a plurality of tubes having a "U" -shaped flow path therein; A pair of plurality of distribution holes coupled to the upper header and formed in the first tank having an inlet and an outlet pipe at one side, and arranged at a predetermined interval on the upper end of the plurality of distribution holes, and a recovery hole at one side thereof; An upper tank including a second tank having a partition means for partitioning the heat exchange medium flowing into the tube and the heat exchange medium discharged therefrom; A first opening and closing means slidably installed in the upper tank to open and close the pair of distribution holes; It is rotatably installed in the upper tank and is characterized in that it comprises a control means for operating the first opening and closing means by receiving external power.

In addition, both ends are fixed to the upper and lower header and a plurality of tubes arranged in a plurality of front and rear rows; A pair of plurality of distribution holes coupled to the upper header and formed in the first tank having an inlet and an outlet pipe at one side, and arranged at a predetermined interval on the upper end of the plurality of distribution holes, and a recovery hole at one side thereof; An upper tank including a second tank having a partition means for partitioning the heat exchange medium flowing into the tube and the heat exchange medium discharged therefrom; A first opening and closing means slidably installed in the upper tank to open and close the pair of distribution holes; A control means rotatably installed in the upper tank and configured to operate the first opening and closing means by receiving external power; It is characterized in that it comprises a lower tank coupled to the lower header and communicating the front, rear tube to form a "U" -shaped flow path.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

4 is a perspective view showing a heat exchanger according to a first embodiment of the present invention, Figure 5 is an exploded perspective view showing a heat exchanger according to a first embodiment of the present invention, Figure 6 is a heat exchanger according to a first embodiment of the present invention 5 is a cross-sectional view taken along line AA in FIG. 5, FIG. 8 is a cross-sectional view taken along line BB in FIG. 5, and FIGS. 9A to 9C show a first embodiment of the present invention. According to the operating state of the heat exchanger.

As shown, the heat exchanger 100 according to the present invention includes a plurality of tubes 101 having one end fixed to the upper header 140 and arranged at equal intervals and having a “U” -shaped flow path therein,

It is coupled to the upper header 140 and embedded in the first tank 120 and the first tank 120 having the inlet and outlet pipes 121 and 122 formed thereon to allow the heat exchange medium to be introduced / exposed on one side. There is a pair of plurality of distribution holes 131 and a plurality of distribution holes 131 arranged in a diagonal direction at a predetermined interval therebetween and a recovery hole 134 is formed on one side thereof, and from inside the heat exchange medium and the tube 101 introduced into the tube 101. An upper tank 110 composed of a second tank 130 having partition means 132 for partitioning the discharged heat exchange medium;

A first opening / closing means (160) installed slidably inside the upper tank (110) for opening and closing the pair of distribution holes (131);

It is rotatably installed in the upper tank 110 and is configured of a control means 170 to specify the supply amount of the heat exchange medium while operating the first opening and closing means 160 by receiving external power.

On the other hand, the heat dissipation fin 102 to promote heat exchange between the tubes 101 may be further interposed.

First, the structure of the upper tank 110 in more detail as follows.

The first tank 120 is formed in the form of the lower end is coupled to the upper header 140, the inlet, outlet pipes 121, 122 are formed in the same direction, respectively in communication with the inside on the upper side However, they may be formed in opposite directions.

In addition, the second tank 130 is built into the opened lower end side of the first tank 120, and the inside of the upper tank 110 is divided into an outlet passage 112 and an inlet passage 111 at one upper end. Partition 135 is formed so as to extend from the recovery hole 134.

That is, the outlet passage 112 communicates the recovery hole 134 and the outlet pipe 122, and the inlet passage 111 communicates the distribution hole 131 and the inlet pipe 121.

In addition, the partition 135 is formed with a bypass hole 136 for communicating the outlet passage 112 and the inlet passage 111, the inlet pipe 121 according to whether the bypass hole 136 is opened or closed. The heat exchange medium introduced through) may be supplied to the tube 101 side, or some of the introduced heat exchange medium may be supplied to the tube 101 side, and some may be immediately bypassed to the outlet pipe 122.

The dividing means 132 includes an inlet passage 132a for communicating the distribution hole 131 and the inlet 101a of the tubes 101 corresponding to the distribution hole 131, and the inlet passage 132a. And an outlet passage 132b which is partitioned by the partition wall 132c and communicates the outlet 101b of the tubes 101 with the recovery hole 134.

Here, as the pair of distribution holes 131 are formed to be shifted in a diagonal direction to each other, the inlet passage 132a also corresponds to the pair of distribution holes 131 so as to be partitioned in a diagonal direction at a lower side thereof. Is formed. In addition, the outlet passage 132b is formed in a diagonal direction opposite to the inlet passage 132a to communicate the outlet 101b of the tubes 101 with the recovery hole 134.

Therefore, the heat exchange medium simultaneously supplied through the pair of distribution holes 131 flows to the inlet 101a side of the tube 101 in a diagonal direction communicating with the inlet flow passage 132a and then flows u-turn. It is discharged to the flow path 132b is to be moved to the recovery hole 134.

In addition, a partition wall 132d is formed between the tubes 101 in the inlet flow passage 132a so that the pair of distribution holes 131 communicate with the inlets 101a of the tubes 101 independently. do.

The number of distribution holes 131 and the number of tubes 101 are the same.

In addition, a second opening and closing unit 180 is installed inside the upper tank 110 to selectively open and close the recovery hole 134 and the bypass hole 136 by the operation of the control means 170.

The second opening and closing means 180 is formed with a gear 181a on one side of the inner side to be engaged with the second gear 173 of the control means 170, and in conjunction with the forward and reverse rotation of the control means 170 A reciprocating transfer member 181 and a bypass valve 183 slidably seated inside the partition 135 to selectively open and close the recovery hole 134 and the bypass hole 136, and It consists of a connection member 182 connecting the transfer member 181 and the bypass valve 183.

Here, the conveying member 181 is a rectangular structure through which the inside is penetrated, and is engaged with the second gear 173 of the control means 170 is inserted therein, at this time one side of the inside to enable the reciprocating motion It is preferable that the gear 181a be formed only.

In addition, the transfer member 181 and the connection member 182 are integrally formed, and the connection member 182 and the bypass valve 183 are detachably coupled.

That is, the coupling groove 182a facing upward is formed at the end of the connection member 182, and the coupling protrusion 183b extending downward of the bypass valve 183 is inserted into the coupling groove 182a. To be combined.

In addition, a pair of elastic members 183a are further provided at an upper end of the bypass valve 183 so that the bypass valve 183 may be in close contact with the inner bottom surface of the partition part 135 by sliding with a constant elastic force. The pressure guide 127 protrudes from the upper inner surface of the first tank 120 so that the elastic member 183a can be uniformly pressed.

Therefore, even if the bypass valve 183 slides to open and close the recovery hole 134 and the bypass hole 136, the leak is always maintained in close contact with the bottom surface of the partition 135 to prevent leakage of the heat exchange medium. Will be done.

Here, the elastic member 183a is a shape protruding from the bypass valve 183 and may be configured in various ways, and the material may be steel, but nylon (to prevent corrosion) Nylon).

In addition, the lower side surface of the bypass valve 183 is coated with various materials such as Teflon material, rubber material to further improve the sealing property.

In the initial opening of the bypass hole 136 by the bypass valve 183, the inside of the first tank 120 may not be rapidly bypassed by too much heat exchange medium through the bypass hole 136. The protrusion 126 is further formed on the side to reduce the cross-sectional area of the upper side of the bypass hole 136.

The protrusion 126 may be formed such that the cross-sectional area of the upper side of the bypass hole 136 is gradually increased as the bypass hole 136 is gradually opened by the bypass valve 183.

As such, the bypass hole 136 may be opened and closed by the bypass valve 183 in correspondence with the position where the slide valve 161 to be described below opens and closes the distribution hole 131 so that only a proper flow rate may be bypassed. To help.

In addition, the first opening and closing means 160 is disposed on both sides of the control means 170 and the gear 162 on each side facing each other to be engaged with the first gear 172 of the control means 170, respectively. Is formed, and consists of a pair of slide valve 161 for opening and closing the pair of distribution holes 131 while reciprocating in mutually opposite directions in conjunction with the forward, reverse rotation of the control means 170.

The upper end of the slide valve 161 is further provided with an elastic member 163 so that the slide valve 161 is in close contact with the upper end surface of the second tank 130 with a certain elastic force to slide, the first tank 120 The pressing guide 123 is formed to protrude on the inner surface of the upper end of the upper portion to press the elastic member 163 constantly.

Here, the lower side of the slide valve 161 is coated with a variety of materials such as Teflon material, rubber material so as to further improve the sealing property (161a).

In addition, the elastic member 163 provided on the top of the slide valve 161 is a form protruding from the slide valve 161, the shape can be configured in a variety of ways, such as streamline, the material is steel (Steel) Although it is possible, it is preferable to use nylon in order to prevent corrosion.

In addition, a pair of guides 137 for guiding the reciprocating motion of the slide valve 161 are further formed at the upper end of the second tank 130.

On the other hand, it is preferable that the rubber 150 is further installed between the upper header 140 and the upper tank 110 to improve the sealing property.

In addition, the rubber 150 and the upper header 140, the tube hole 141, 151 is formed to communicate with each tube 101, respectively, the outermost and the center blank tube hole (142, 152) Are formed respectively.

In addition, the blank tube hole 142, 152 is coupled to the blank tube 103, the refrigerant does not flow.

In addition, the control means 170 is coupled to the upper end of the upper end of the first tank 120, the lower end is coupled to the support protrusion 133 protruding to the upper end of the second tank 130, the shaft ( 171, a first gear 172 formed at a predetermined height of the shaft 171 and engaged with the gear 162 of the slide valve 161, which is the first opening / closing means 160, and the shaft ( A second gear 173 formed under the first gear 172 of the 171 and engaged with the gear 181a portion of the transfer member 181 which is the second opening / closing means 180, and the first tank 120. Lever 174 is coupled to the upper end of the shaft 171 protruding out of the () to transfer external power to the shaft.

In addition, a sealing member 125 is further installed between the shaft 171 and the first tank 120.

The upper end of the shaft 171 is formed in a polygon so that the rotational force of the lever 174 can be accurately transmitted.

On the other hand, the lever 174 is connected to the motor or actuator (not shown).

As described above, the heat exchanger 100 according to the first embodiment of the present invention, when the heat exchange medium is introduced into the inner inlet passage 111 of the upper tank 110 through the inlet pipe 121, the heat exchange medium is By the operation of the control means 170 in accordance with the opening and closing operation of the slide valve 161 and the bypass valve 183 is bypassed directly to the outlet pipe 122 through the bypass hole 136, or the distribution hole 131 After the U-turn flows through the plurality of tubes 101 through the heat exchange with the outside air is discharged to the outlet pipe 122 through the recovery hole 134.

Hereinafter, the circulation process of the heat exchange medium will be described in more detail.

When the lever 174 is rotated at a specific angle through a control switch (not shown) while the heat exchange medium is circulated, the first and second gears 172 and 173 rotate together with the rotation of the shaft 171. The slide valve 161 and the bypass valve 183 are slid.

In this case, the circulation path of the heat exchange medium and the amount of heat exchange medium supplied to each tube 101 are changed according to the positions of the slide valve 161 and the bypass valve 183.

For convenience, the slide valve 161 completely closes the distribution hole 131, the slide valve 161 opens all the distribution holes 131, and the slide valve 161 opens the distribution hole. Only the case of opening part of 131 will be described.

First, the heat exchange medium circulation process when the slide valve 161 completely closes the distribution hole 131 (see FIG. 9A) is as follows.

When the slide valve 161 completely closes the distribution hole 131 by the operation of the control means 170 by the lever 174, the bypass valve 183 completely opens the bypass hole 136. The recovery hole 134 is completely closed.

Therefore, the heat exchange medium flowing into the inner inlet passage 111 of the upper tank 110 through the inlet pipe 121 is immediately bypassed to the outlet passage 112 through the bypass hole 136 and then the outlet pipe ( 122).

Second, the heat exchange medium circulation process in the case where the slave valve 161 fully opens the distribution hole 131 (see FIG. 9B) is as follows.

When the slide valve 161 completely opens the distribution hole 131 by the operation of the control means 170 by the lever 174, the bypass valve 183 completely closes the bypass hole 136. The recovery hole 134 is completely open.

Therefore, the heat exchange medium flowing into the inner inlet passage 111 side of the upper tank 110 through the inlet pipe 121 is supplied to all the open distribution holes 131 and is divided in the diagonal direction to the inlet flow passage 132a. Flows into.

The heat exchange medium introduced into the inlet flow passage 132a flows into the inlet 101a side of the entire tube 101 communicating with the inlet flow passage 132a and flows by u-turning the tubes 101 in a displaced form to actively exchange heat with outside air. After performing, the second tank 130 is moved to the outlet passage 132b.

The heat exchange medium moved to the outlet passage 132b is moved to the outlet passage 112 side of the upper tank 110 through the open recovery hole 134 and then discharged to the outlet pipe 122.

Third, the heat exchange medium circulation process when the slide valve 161 opens only a part of the distribution hole 131 (see FIG. 9C) is as follows.                     

When the slide valve 161 opens only a part of the distribution hole 131 by the operation of the control means 170 by the lever 174, the bypass valve 183 is the bypass hole 136 and the recovery hole ( The bypass hole 136 is partially opened while the recovery hole 134 is partially opened while being positioned between the 134.

Therefore, some of the heat exchange medium flowing into the inner inlet passage 111 of the upper tank 110 through the inlet pipe 121 is supplied to the open distribution hole 131, but the remaining heat exchange medium is partially opened. After being bypassed directly to the outlet passage 112 through the bypass hole 136 is discharged to the outlet pipe 122.

Subsequently, the heat exchange medium supplied to the partially opened distribution hole 131 flows u-turn along some of the tubes 101 in a diagonal direction communicating with the open distribution hole 131 to perform active heat exchange with the outside air. The second tank 130 is moved to the outlet passage 132b.

The heat exchange medium moved to the outlet passage 132b is moved to the outlet passage 112 side of the upper tank 110 through the partially opened recovery hole 134 and then discharged to the outlet pipe 122.

That is, the more the distribution hole 131 is opened by the slide valve 161, the bypass valve 183 gradually closes the bypass hole 136 to bypass the flow rate through the bypass hole 136. On the contrary, as the distribution hole 131 is opened less, the bypass valve 183 gradually opens the bypass hole 136 to increase the flow rate that is bypassed through the bypass hole 136.

In this way, the flow passage cross-sectional area of the bypass hole 136 is variable in correspondence with the position of the slide valve 161 so that only a proper flow rate can be bypassed.

Therefore, the present invention, the amount of heat exchange medium flowing through the tube 101 can be finely adjusted, as well as to selectively adjust the flow to effectively control the heat exchange capacity according to the cooling and heating load, the heat exchange medium is a tube ( By evenly distributed in 101, the heat exchange performance is improved.

In addition, by configuring one distribution hole 131 per tube 101, the temperature difference is small step by step, and fine temperature control is possible, and the opening and closing method of the distribution hole 131 is configured by sliding type by the slide valve 161. Compared with the opening and closing method of the rotary type, the shape of the header 140 and the tank 110 is simplified and the clamping operation is also improved.

In addition, since the flow path of the heat exchange medium flowing through the tube 101 is made of a U-turn type instead of a conventional one pass type, there is almost no temperature deviation between the inlet and the outlet sides.

FIG. 10 is a perspective view showing a heat exchanger according to a second embodiment of the present invention, and FIG. 11 is a cross-sectional view showing a heat exchanger according to a second embodiment of the present invention, and only a configuration and operation different from those of the first embodiment will be described. Repeated description is omitted.

As shown, the second embodiment is configured by separating the tube 105 into a plurality of front and rear rows and the lower header 190 and the tank (100) to communicate the front and rear tubes 105 to the lower end of the tube 105 ( 191 is combined to form a "U" -shaped flow path.

Accordingly, the heat exchanger 100 includes a plurality of tubes 105 having both ends fixed to upper and lower headers 140 and 190 and arranged in a plurality of rows in front and rear,

It is coupled to the upper header 140 and embedded in the first tank 120 and the first tank 120 having the inlet and outlet pipes 121 and 122 formed thereon to allow the heat exchange medium to be introduced / exposed on one side. There is a pair of plurality of distribution holes 131 and a recovery hole 134 is formed on one side thereof arranged at a predetermined interval therebetween and the heat exchange medium flowing into the tube 105 and the heat exchanger discharged from the tube 105 An upper tank 110 composed of a second tank 130 having partition means 132 for partitioning a medium;

A first opening / closing means (160) installed slidably inside the upper tank (110) for opening and closing the pair of distribution holes (131);

A control means 170 rotatably installed in the upper tank 110 to control the supply amount of the heat exchange medium while operating the first opening / closing means 160 by receiving external power;

It is coupled to the lower header 190 and consists of a lower tank 191 communicating the front and rear tubes 105 to form a "U" -shaped flow path.

That is, in the first embodiment, it is composed of an integral tube 101 formed with an "U" -shaped flow path therein, while in the second embodiment, the tube 105 is separated from the front and the rear, respectively, and both ends thereof are separated from each other. It is coupled to the lower header 140, 190, respectively, the upper header 140 is coupled to the same upper tank 110 as the first embodiment, and the lower header 190 to communicate the front and rear tubes 105 The separated tube 105 is formed by combining the lower tank 191 to form a "U" -shaped flow path.                     

Here, it is preferable that a partition wall 192 is further formed between the tubes 105 to allow the front and rear tubes 105 to communicate independently within the lower tank 191.

Thus, the second embodiment is configured to combine the lower header 190 and the tank 191 at the lower end of the tube 105 to form the tube 105 in the front, rear separation type to form a "U" -shaped flow path In addition, since all configurations and operations are the same as those of the first embodiment, repeated descriptions thereof will be omitted.

As described above, the present invention, by selectively adjusting and opening and closing the flow of the heat exchange medium flowing through the tube, it is possible to easily adjust the heat exchange capacity according to the cooling and heating load, the heat exchange medium evenly through a specific tube or the whole tube without resistance to movement By being distributed and circulated, the mixing performance and the overall heat exchange performance are improved.

In addition, by configuring one distribution hole per tube having a "U" -shaped flow path, the temperature deviation of the inlet and outlet side and the temperature step by step is small and fine temperature control is possible.

And, by configuring the opening and closing method of the distribution hole to the sliding type by the slide valve, the shape of the header and the tank is simplified and the clamping operation is improved.

Claims (18)

A plurality of tubes 101 having end portions fixed to the upper header 140 and arranged at equal intervals and having a “U” -shaped flow path therein; It is coupled to the upper header 140 and built in the first tank 120 and the first tank 120 having the inlet and outlet pipes 121 and 122 formed on one side thereof, and are arranged to be offset from each other with a predetermined interval on the upper end. A second tank having a pair of plurality of distribution holes 131 and a recovery hole 134 formed at one side thereof, and a partition means 132 for partitioning the heat exchange medium flowing into the tube 101 and the heat exchange medium discharged therein. An upper tank 110 composed of 130; First opening / closing means (160) installed slidably in the upper tank (110) to open and close the pair of distribution holes (131); It is rotatably installed in the upper tank 110 and is made to include a control means 170 for operating the first opening and closing means 160 by receiving external power, The first opening and closing means 160 is disposed on both sides of the control means 170, and the gear 162 is formed on one side to be engaged with the control means 170, respectively, and the control means 170, It consists of a pair of slide valve 161 for opening and closing the pair of distribution holes 131 while sliding in conjunction with the reverse rotation, The control means 170 includes a shaft 171 that rotates by receiving the external power, and a first gear 172 formed on the shaft 171 to operate the pair of slide valves 161. Heat exchanger, characterized in that made. A plurality of tubes 105 having both ends fixed to the upper and lower headers 140 and 190 and arranged in a plurality of front and rear rows; It is coupled to the upper header 140 and built in the first tank 120 and the first tank 120 having the inlet and outlet pipes 121 and 122 formed on one side thereof, and are arranged to be offset from each other with a predetermined interval on the upper end. A second tank having a pair of plurality of distribution holes 131 and a recovery hole 134 formed at one side thereof, and partition means 132 partitioning the heat exchange medium flowing into the tube 105 and the heat exchange medium discharged therein. An upper tank 110 composed of 130; First opening / closing means (160) installed slidably in the upper tank (110) to open and close the pair of distribution holes (131); A control means (170) rotatably installed in the upper tank (110) to receive external power to operate the first opening / closing means (160); Is coupled to the lower header 190 and comprises a lower tank 191 to communicate the front and rear tubes 105 to form a "U" -shaped flow path, The first opening and closing means 160 is disposed on both sides of the control means 170, and the gear 162 is formed on one side to be engaged with the control means 170, respectively, and the control means 170, It consists of a pair of slide valve 161 for opening and closing the pair of distribution holes 131 while sliding in conjunction with the reverse rotation, The control means 170 includes a shaft 171 that rotates by receiving the external power, and a first gear 172 formed on the shaft 171 to operate the pair of slide valves 161. Heat exchanger, characterized in that made. The method according to claim 1 or 2, One side of the second tank 130, the outlet passage 112 and the distribution hole 131 and the inlet pipe 121 in which the recovery hole 134 and the outlet pipe 122 communicate with the inside of the upper tank 110, respectively. The partition portion 135 is formed to be extended so that it can be partitioned into the inlet passage (111) communicating with each other, the bypass portion 136 for communicating the outlet passage 112 and the inlet passage (111) in the partition portion (135). Heat exchanger, characterized in that formed. The method according to claim 1 or 2, The partition means 132 includes an inlet passage 132a for communicating the inlet of the distribution hole 131 and the tubes 101 and 105 corresponding to the distribution hole 131, the inlet passage 132a, and a partition wall. And an outlet flow path (132b) which is partitioned by (132c) and communicates the outlets of the tubes (101) (105) and the recovery hole (134). The method of claim 3, wherein Inside the upper tank 110, a second opening and closing means 180 for selectively opening and closing the recovery hole 134 and the bypass hole 136 by the operation of the control means 170 is installed, The second opening and closing means 180 has a gear 181a formed on one side to be engaged with and coupled to the control means 170, and the transfer member 181 reciprocating in conjunction with the forward and reverse rotation of the control means 170. And a bypass valve 183 slidably seated in the partition 135 to open and close the recovery hole 134 and the bypass hole 136, and the transfer member 181 and the bypass valve ( 183) a heat exchanger, characterized in that consisting of a connecting member (182) for connecting. delete The method of claim 5, An elastic member 183a is further provided at an upper end of the bypass valve 183 so that the bypass valve 183 may be in close contact with the bottom surface of the partition 135 with a predetermined elastic force. Heat exchanger, characterized in that the inner side of the pressure guide (127) is further formed so as to press the elastic member (183a) constantly. The method of claim 5, Protrusions 126 are further formed on the inner side of the first tank 120 to reduce the cross-sectional area of the upper side of the bypass hole 136 so that too much heat exchange medium is not bypassed upon initial opening of the bypass hole 136. Heat exchanger, characterized in that. The method of claim 8, The protrusion 126 is formed such that the cross-sectional area of the upper side of the bypass hole 136 is gradually increased as the bypass hole 136 is gradually opened. delete The method according to claim 1 or 2, The upper end of the slide valve 161 is further provided with an elastic member 163 so that the slide valve 161 is in close contact with the upper surface of the second tank 130 with a predetermined elastic force, the first tank 120 Heat exchanger, characterized in that the inner side is further formed with a pressure guide (123) so as to press the elastic member 163 constantly. The method according to claim 1 or 2, Heat exchanger, characterized in that the guide 137 is further formed on the upper end of the second tank 130 to guide the reciprocating motion of the slide valve (161). The method of claim 4, wherein The inlet flow passage 132a of the second tank 130 is disposed between the tubes 101 and 105 such that the pair of distribution holes 131 communicate independently with the inlets of the respective tubes 101 and 105. Heat exchanger, characterized in that the partition wall (132d) is formed in the. The method of claim 13, Heat exchanger, characterized in that the number of the distribution hole (131) and the number of tubes (101) are the same. The method according to claim 1 or 2, Heat exchanger, characterized in that the rubber (150) is further installed between the upper header (140) and the upper tank (110) for sealing. The method of claim 5, The shaft 171 has an upper end portion penetrated through an upper end of the first tank 120 and a lower end portion is rotatably coupled to a support protrusion 133 protruding from an upper end of the second tank 130. A second gear 173 for operating the second opening and closing means 180 is formed below the first gear 172 of the shaft 171, Heat exchanger characterized in that the upper end of the shaft 171 is coupled to the lever 174 for transmitting external power to the shaft 171. The method of claim 16, Heat exchanger, characterized in that the sealing member 125 is further installed between the shaft (171) and the first tank (120). The method of claim 2, The heat exchanger, characterized in that the partition tank (192) is further formed between the tube 105 so that the front and rear tubes 105 can communicate with each other inside the lower tank (191).

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