JP3084460U - Heat exchanger for refrigeration or air conditioning equipment - Google Patents

Abstract

(57) [Problem] To provide a refrigeration or air conditioning heat exchanger having high cooling efficiency and low energy consumption. A heat exchanger (10) having a plurality of tubes arranged in parallel and connected in a horizontal direction between a pair of radiating fins (110) arranged in a vertical direction, and a heat exchanger (10) vertically piercing the fins (110). After extending both sides to further increase the heat radiation area, the water supply system 20 is provided with a dripping box 210 to provide a water flow on the fins under no pressure, and water is collected in the water storage box 220. By utilizing the water 232, the water is again introduced into the dripping box 210, and this is repeated, and the evaporated water is automatically replenished from the outside.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a heat exchanger for refrigeration or air-conditioning equipment, and more particularly to a heat exchanger having a half-air-cooled half-water-cooled condenser (condenser) structure for improving the operation efficiency of refrigeration or air-conditioning equipment.

[0002]

[Prior art]

 In air conditioning or refrigeration equipment, heat exchange is mainly performed between air introduced from outside in the evaporator and liquid refrigerant. In this type of gas refrigerant method, the gas that has been compressed and cooled to a high density by the compressor in the condenser is further cooled by the condenser into a liquid refrigerant, and this is repeated constantly. It is a method. The electric power consumed in the entire cooling process comes from the condenser body, and the cooling heat radiation efficiency of the condenser is increased, and the temperature of the refrigerant is greatly reduced. In other words, when the compressor is operated in the system, by condensing at the minimum critical pressure, an excellent refrigeration effect is easily provided, and the motor output of the compressor is thereby reduced by the energy. The goal of saving is also achieved at the same time.

In a refrigeration or air-conditioning system using a fin-type condenser having a known structure, as shown in FIG. 1, fins are arranged in parallel with the condenser, and the fins are laterally penetrated from a refrigerant pipe and densely arranged. One refrigerant pipe is bypassed and paralleled around the pipe, consistently reaching the end, and the refrigerant compressed into high-pressure gas by the compressor is introduced into each row of refrigerant pipes. In the cooling process, the fan is rotated by a fan motor to introduce external air to pre-cool the air passage between the refrigerant tubes inside the condenser, Heat is exchanged with the refrigerant pipe and the fins, and the amount of heat released by the refrigerant liquefaction of the condenser is quickly taken away.

[0004]

[Problems to be solved by the invention]

 However, the above-described condenser having the known structure has the following disadvantages. For example, a single pipe consistently reaches the rear end, and since a high-pressure gaseous refrigerant is injected from the top, the refrigerant flows downstream of the radiator pipe (about 1/6 When it reaches 1/4), not only is it not possible to exert a cooling effect on the liquid refrigerant that has already been almost liquefied, but also the loss due to viscous resistance with the pipe wall increases because the pipe is too long. Also, if the tube has too many bends, the loss due to viscous drag will also increase. Expecting the cooling effect only by using the convection of air is that if the outside air temperature is high and the refrigerant pressure is high, the cooling temperature will rise and the heat radiation effect will relatively decrease, so that the heat transfer area and air flow It is essential to increase the volume, the volume is relatively large, the noise is loud, and naturally the energy consumed increases. Therefore, the present invention provides a heat exchanger for refrigeration or air conditioning, which has high cooling efficiency and suppresses energy loss.

[0005]

[Means for Solving the Problems]

 Adopt fin type heat exchanger and water supply system. In the fin type heat exchanger, a group of radiating fins is vertically arranged, and a refrigerant radiating tube is bored horizontally between the radiating fin pairs. An air passage is formed between the refrigerant radiating tubes and between the radiating fins by the connecting method. In the water supply system, a water flow is provided on the radiating fin pieces and the refrigerant radiating pipe to perform heat exchange to promote liquefaction of the refrigerant, and the heat absorbed and evaporated cooling water is further rapidly generated by the airflow generated by the fan. To be robbed. Further, by extending outwardly on each of the upper and lower sides of the fin piece, two heat radiating sections are provided in addition to the refrigerant heat radiating section, so that the heat radiating area is increased so that the cooling effect is also improved.

[0006]

[Embodiment]

 As shown in FIG. 2, the present invention mainly enhances the function of the heat exchanger 10 to receive the refrigerant liquefied by the high pressure refrigerant by the compressor 40 and to liquefy using the water supply system. An air flow is created in the air passage of the heat exchanger 10 by interlocking the fan 34 with the motor 32. That is, an effect of simultaneously removing the amount of heat of the refrigerant in the heat exchange and the vapor evaporated through the heat exchange is provided.

As shown in FIG. 3, the heat exchanger 10 has a fin type design, and a refrigerant tube 122 is inserted between fins 110 arranged in a vertical direction to form a dense structure. I have. Further, two radiating sections 230 and 240 are designed to extend outward on both upper and lower sides of the fin 110 at locations other than the refrigerant radiating section, thereby increasing a radiating area to enhance a cooling effect. The refrigerant pipes 122 are installed in the refrigerant radiating pipes 120 (see FIG. 3) of each layer in such a manner as to penetrate horizontally. The inlet of the refrigerant radiating pipe 120 of each layer is mutually connected to the refrigerant introducing pipe 124 in a parallel manner, and the high-pressure and high-temperature refrigerant press-fitted by the compressor 40 is introduced into the introducing pipe 124 from below, and the refrigerant of each layer is introduced. To the tube. Therefore, the refrigerant in the plurality of tubes is cooled at the same time, and the amount of cooling per unit time is increased, that is, the cooling rate is accelerated without increasing the pressure and energy is saved.

As shown in FIG. 4, the number of rows of refrigerant pipes can be changed according to the situation and need. In the embodiment, three rows of refrigerant pipes are used as an example. The liquefaction of the refrigerant proceeds with a sufficient length. After the upper and lower refrigerant pipes 122 are connected, the refrigerant pipes 122 adjacent to each other in the horizontal direction are connected to each other, so that the refrigerant radiating pipes 120 of each layer exhibiting three rotations are completed. Further, when the number of rows increases, for example, refrigerant pipes of the same layer in each row may be directly penetrated as needed.

As shown in FIG. 2, another water supply system 20 is provided to further increase the cooling efficiency of the heat exchanger 10. As shown in FIGS. 3 and 5, the water supply system 20 has a dripping box 210 and a water storage box 220, and a first heat radiating section 230 is provided at an upper stage of the fin 110, and a second heat radiating section 240 is provided at a lower stage thereof. ing. The dripping box 210 has a mechanism for drawing in the cooling water from the outside to the remaining cooling water dripped into the heat exchanger 10 and replenishing the consumed water amount. In this way, the cooling water surplus due to the heat exchange is first cooled in the second radiating section 240, and the cooling water introduced into the dripping box 210 is further pre-cooled in the first radiating section 230. By doing so, the conventional cooling water does not absorb the heat of the refrigerant and does not rise in temperature while being stored, thereby making the cooling and heat radiation effects more stable.

The dripping box 210 is located at the upper end of the fin type heat exchanger 10 and allows cooling water to flow downward from above. In the cooling process, the fan 34 is interlocked with the fan motor 32. Then, outside air is introduced into the air passage inside the heat exchanger 10 so that the air exchanges heat and removes evaporated water. The refrigerant to be press-fitted by the compressor 40 enters the distribution pipes of the refrigerant radiating pipes 120 in each layer in a direction higher than below. Due to the principle of Pascal, the refrigerant pressure at the entrance of each layer is P1 = P2 =. However, since there is frictional force on the pipe wall, P1> P2 >> ... Pn in practice, and the difference is not large, but this is a very important point in consideration of energy saving. In addition, since the cooling water of the dripping box 210 flows downward from above, the temperature of the cooling water in the upper row naturally becomes slightly lower than that in the lower row, and the lower the temperature, the lower the critical pressure required for liquefaction, If the temperature is slightly higher, the critical pressure will be slightly higher. In other words, the design in which the direction in which the refrigerant enters the distribution tube is above the bottom is a cooling method suitable for the cooling water to hang down from above, and the cooling medium in each set of parallel radiator tubes is The same cooling effect can be obtained, and simultaneous cooling can be performed without knowing the back end without increasing the pressure.

As shown in FIG. 6, a plurality of drain holes 212 are formed in the bottom of the water draining box 210, and an isolation layer 214 having an isolation layer water hole 216 is provided therein. The positions of the water holes 216 and the bottom water holes 212 are different from each other. In this way, the pressure of the introduced water is reduced, and the water droplets slowly drip on the fins 110 and the refrigerant pipes 122. When the water reaches the uppermost end of the fin 110, a drop of water drops from a short distance with no pressure or a very small pressure, and the water drops on the fin 110 when gravity exceeds the surface friction force. Only the water flows smoothly, and the time for which the water stays on the fins 110 is prolonged, so that the time for blowing the wind becomes sufficient, and the evaporation proceeds sufficiently at room temperature, so that the heat of the fins and the refrigerant pipes is more efficiently obtained. Will be absorbed. If the number of the isolation layers 214 is increased according to the actual situation, the water holes 216 of each of the isolation layers 214 are arranged differently from each other, so that the pressure and impact of the introduced water are lower. Becomes

In another embodiment, the distance between the fins 110 is 13 fins / inch, and the water droplets come into contact with the two fins 110 at the same time and hang down smoothly. The water droplets exchange heat with the fins 110 on both sides, and provide a higher cooling effect here as well. As shown in FIG. 5, the first and second heat radiation zones 230 and 240 are constituted by upper and lower stages of the fin 110 whose length is increased. The first heat radiating section 230 has a water pipe 232 that penetrates the fin 110 at an upper part of the fin 110, and by using this structure, the fin 110 and the fin 110 are heated to achieve the purpose of lowering the temperature of the cooling water. At the same time as the exchange is advanced, the heat flow is taken by the airflow of the fan 34. Each water pipe 232 is of a parallel type as shown in the figure or a skewer type of one pipe, depending on the type penetrating the first heat radiation section 230. The second heat dissipation zone 240 is formed by increasing the length of the fins and retaining the lower portion, and a metal tube 232 is provided between the fins. Similarly, the fan is connected to outside air by a fan. Heat exchange is performed, and cooling is performed with the remaining water, albeit slightly.

In the initial stage of cooling, excess water is further introduced into the reservoir 220, which is connected directly to the bottom by the reservoir 220 or, as in the embodiment, the catchment basin. After the water is collected using the water 222, the water is introduced into the water storage box 220, and one end of the water storage box 220 is connected to the launching pipe 221, and the water is replenished from the outside to replenish the water amount. I am trying to do it. The water storage box 220 uses a pump 226 to introduce water into the first heat radiation area 230. A liquid level measuring switch 224 is provided in the water storage box 220. The liquid level measuring switch 224 is used to detect and measure the liquid level by a float switch. A water temperature measuring device 228 is provided. ing. First, since the cooling water in the water storage box 220 evaporates and decreases in the fin type heat exchanger 10, when the lower limit of the water level is measured by the liquid level measurement switch 224, the switch is activated and proceeds. Water operation is started, and water is supplemented until the liquid level measurement switch 224 reaches a certain set value. When the liquid level reaches a certain set value in this way, the pump 226 is activated and the cooling water in the water storage box 220 is extracted to the first heat radiating section 230. In addition, by measuring the water temperature value with the water temperature measuring device 228, the degree of cooling of the heat exchanger 10 can be known, and when the water temperature reaches a certain value, the operation of the pump is stopped.

As an application, the refrigerant may be divided into first and second condensers 10 and 10 ′. As shown in FIG. 7, a high-pressure gaseous refrigerant of a compressor is injected into the first condenser 10 and further cooled. The condensate is sent to the second condenser 10 ′ to maintain the cooling and liquefaction. The refrigerant derivation method of the refrigerant radiating pipes 120 of each layer of the heat exchanger 10 is different from that of the first heat exchanger 10 in that the outlets of the refrigerant radiating pipes 120 of each layer are simultaneously connected in parallel with the refrigerant discharging pipe 126. A method of collecting and discharging the refrigerant after cooling and liquefaction of the respective layers, or as in a second heat exchanger 10 ', the refrigerant radiating pipes 120' of the respective layers are separately assembled, and the refrigerant radiating pipes 120 'of each set are separated. Is connected in parallel with each set of refrigerant outlet pipes 126 'so that each set of refrigerant outlet pipes 126' collects and discharges.

[0015]

[Effect of the invention]

 According to the present invention, a method of simultaneously cooling the refrigerant in a number of tubes that have replaced the conventional single radiator tube, thereby increasing the amount of cooling per unit time and reducing the pressure of the compressor The first energy savings goal was achieved by a non-member. In addition, the high-pressure refrigerant enters each layer distribution pipe from below upward, and conversely, is supplied with water downward from above, so that the refrigerant in each set of parallel radiator pipes has the same cooling effect, In addition, the purpose of energy saving was also achieved here because cooling was performed at the same time without any delay and without increasing the pressure.

[0016] In addition to the fin piece set extending to the refrigerant section, by providing two upper and lower heat radiating sections, the purpose of increasing the heat radiating area and enhancing the cooling effect has been achieved. Water is replenished downward in the water drain box with a water hole structure.When the water reaches the upper part of the radiator, water drops will drop at a short distance even if there is no pressure, or if the pressure is very slight. In addition, since water flows downward only when slight gravitational force exceeds the surface friction force on the heat radiating piece, the time for which water stays on the heat radiating piece increases, and the water is sufficiently evaporated at room temperature, and thus the fins are formed. The heat of the pieces and the refrigerant pipes was effectively absorbed, and the temperature of the refrigerant was greatly reduced, increasing the cooling effect. Furthermore, when cooling the evaporating water, the temperature is reduced as pre-cooling first, and the remaining water is pre-cooled, which is different from the conventional direct water supply method. After lowering the temperature and further lowering the temperature in the first radiating section before entering the fin piece heat exchanger, heat exchange between the fin pieces and the refrigerant pipe etc. is performed with relatively low temperature cooling water. As a result, the problem of temperature accumulation due to repeated use of water in circulation was solved, and at the same time, the objective of providing a stable cooling effect was achieved.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a fin condenser having a known structure.

FIG. 2 is a system explanatory diagram of the heat exchanger in the present invention.

FIG. 3 is an explanatory view of an embodiment of the heat exchanger according to the present invention.

FIG. 4 is an explanatory view of a single-layer refrigerant radiating tube in FIG. 3;

FIG. 5 is a front view of the heat exchanger according to the present invention.

FIG. 6 is a three-dimensional exploded view of the dripping box in the heat exchanger according to the present invention.

FIG. 7 is an explanatory view of another embodiment of the heat exchanger according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Heat exchanger 110 Fin 120 Coolant radiation pipe 122 Coolant pipe 124 Coolant introduction pipe 126 Coolant outlet pipe 20 Water supply system 210 Water dripping box 212 Bottom water hole 214 Isolation layer 216 Isolation layer water hole 220 Water storage box 221 Launching pipe 222 Water collecting basin 224 Liquid level measurement switch 226 Pump 228 Water temperature measuring instrument 230 First heat radiation area 232 Water pipe 240 Second heat radiation area 242 Metal pipe 32 Fan motor 34 Fan 40 Compressor

Claims (7)

[Utility model registration claims] The heat exchanger includes a fin type heat exchanger and a water supply system, the heat exchanger having a plurality of radiating fins and a plurality of layers of refrigerant radiating tubes formed between the fins in a horizontal direction. An air passage is formed between the pipes and the fins, and the refrigerant radiating pipe introduces high-pressure refrigerant press-fitted by a compressor by a method in which a number of pipes are connected in parallel, and in the water supply system, By gravity, the water dripping on the heat exchanger is supplied, so that the fins and the refrigerant pipes perform further heat exchange, and the vapor evaporated by the heat exchange passes through the air passage of the heat exchanger by the air flow generated by the fan. A heat exchanger for refrigeration or air conditioning equipment, wherein the heat source is quickly taken away. 2. A water supply box is provided in the water supply system, a plurality of water holes are provided in a bottom surface of the water supply box, and one end of the water supply box and one end of a water pipe are connected to form the water supply box. Water is introduced thereinto, and there is at least one separating layer having water holes in the dripping box, and the positions of the water holes on the separating layer and the bottom water holes are different from each other. The heat exchanger for refrigeration or air conditioning equipment according to claim 1, wherein the heat exchanger is opened. 3. The water supply system includes a water storage box, and the water in the water storage box is used as cooling water, the cooling water remaining after the heat exchange is collected in the water storage box, and the amount of water is supplied from outside. The heat exchanger for refrigeration or air conditioning equipment according to claim 1, wherein the water supply is supplemented. 4. The refrigeration system according to claim 1, wherein said water supply system includes a first heat radiating section, wherein said first heat radiating section is formed by a water pipe formed in an upper stage of the fin to lower the water temperature as pre-cooling. Or a heat exchanger for air conditioning equipment. 5. The refrigeration or air-conditioning system according to claim 1, wherein the water supply system includes a second heat radiation zone, and the temperature is reduced as pre-cooling by using surplus cooling water after heat exchange. Heat exchanger. 6. A second heat radiation section of the water supply system is constituted by a metal tube which is provided from the lower stage of the fin to provide a structure for localization and support, and the excess cooling water is supplied to an end of the fin. 2. The heat exchanger for refrigeration or air-conditioning equipment according to claim 1, wherein when the temperature is reached, heat is exchanged with air introduced by the fan to lower the temperature. 7. When the fin type heat exchanger is installed with two or more sets of fin type heat exchangers at the same time, the refrigerant radiating pipes of each set of the fin type heat exchangers are simultaneously connected to the same refrigerant introducing pipe and refrigerant discharging pipe. The heat exchanger for refrigeration or air conditioning equipment according to claim 1, wherein the heat exchanger is used.