JPH09138080A - Closs-flow type sealed type heating tower - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily carry out removal of water drops, ice and the like adhered to a heat exchanger without accompanying re-adhesion of adhesive matter by a method wherein a sealed type heat exchanger in a lower stage is arranged so as to be deviated sequentially toward the exhaust port side of the same with respect to the sealed type heat exchanger in an upper stage. SOLUTION: Sealed type heat exchangers B are arranged at the outside air intake port 10 side of a heating tower A stepwise in up-and-down. The sealed type heat exchanger B in a lower stage is arranged so as to be deviated sequentially with respect to the sealed type heat exchanger B in an upper stage. An upper spray water tank 20 is provided above the sealed type heat exchanger B while the upper spray water tank 20 is communicated with a lower water tank 30 through a circulating pump P1 and a spray water supplying pipe 21. Spray water will never be collided against the sealed type heat exchanger B in an upper stage, which is positioned at the side of the outside air intake port, and is dropped into the lower water tank 30 without re-frosting and adhering ice to the sealed type heat exchanger B in the lower stage.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cross flow type heating tower.

[0002]

2. Description of the Related Art Various cross flow type heating towers of this kind have been developed in the market before this application, and an example thereof is described in Japanese Utility Model Laid-Open No. 63-80467. The heat exchanger in the cross-flow type heating tower described in the above publication is an open type heat exchanger, and in the winter, a heat medium containing antifreeze is sprayed onto the open type heat exchanger, and inside the heating tower body. The outside airflow taken in by this and the low temperature heat medium are brought into direct contact with each other to exchange heat, and the heated heat medium is collected in the lower water tank of this heating tower and then circulated to the load part for use. A liquid pan that covers only the water surface of the lower water tank just below the exhaust port is arranged above the water surface of the lower water tank so that rainwater, snow, and the like from the exhaust port will not enter and dilute the concentration of this antifreeze liquid. However, arranging the liquid tray as described above may make the internal space narrower and hinder maintenance and repair of the heat exchanger. With the above-mentioned drawbacks improved, a closed heat exchanger is used as a heat exchanger in a cross-flow type heating tower, and this closed heat exchanger is placed below the sprinkler upper water tank. Arranged in multiple stages, stopping the spraying of sprayed water in the winter season, circulating the heat medium containing the antifreeze liquid in the closed heat exchanger, indirectly contacting the outside air current and this low temperature heat medium, A structure has been developed and used in which the structure for heating the heat medium by exchanging heat is not required and the arrangement of the liquid tray on the water surface of the lower water tank is unnecessary.

[0003]

In the case of using a closed heat exchanger as a heat exchanger in the above-mentioned cross-flow type heating tower, water droplets are formed at a portion near the outside air intake port of this heat exchanger, Ice or the like tends to adhere, and this adhesion may impede the flow of the external air current and may not efficiently heat the heating medium. Furthermore, the water droplets and ice removed from the upper closed heat exchanger tend to adhere to the lower closed heat exchanger to cause refrosting and ice formation. An object of the present invention is to improve the arrangement of a closed heat exchanger, solve the above problems, and water droplets frosted on the heat exchanger,
The object is to obtain a cross-flow type sealed heating tower capable of easily removing deposits such as ice without reattachment. Another object of the present invention is to provide the market with a cross-flow type closed type heating tower in which deposits removed from the closed type heat exchanger are prevented from accumulating on the upper surface of the lower water tank and re-freezing. is there.

[0004]

In order to solve the above-mentioned problems, a specific invention is to arrange closed heat exchangers on the outside air intake side in a hierarchical manner, and to provide a lower heat exchanger for the upper heat exchanger. The hermetically sealed heat exchangers of (1) and (2) are sequentially arranged while being displaced toward the exhaust port side, and the hermetically sealed cross-flow type heating tower is characterized. In order to solve the above-mentioned problems, it is preferable that the hermetic heat exchangers in the hermetic heating tower are vertically stacked to prevent scattering.

In order to solve the above-mentioned problems, the closed heat exchangers in this closed heating tower are characterized by being arranged in a vertically hierarchical manner with a space between them. It is preferable for removal. In order to solve the above problems, the closed heat exchanger in the closed heating tower is dedicated to dry air, and a filler for dry air and wet air is provided on the exhaust port side. Is desirable. In order to solve the above-mentioned problems, the water sprinkler in the hermetic heating tower is a water sprinkler that sprinkles spray water on the filling material, and an on-off valve is provided in a water channel that supplies the spray water to the water sprinkler. It is suitable for cooling and heating throughout the four seasons that they are arranged individually. In order to solve the above-mentioned problems, a fluid discharge device is provided in the lower water tank of the hermetically-sealed heating tower, which causes a fluid to flow along the upper surface of the water tank and drops water droplets, ice, and other deposits removed in the water tank. It is suitable for removing foreign substances such as defrosted water drops and ice. In order to solve the problem, it is preferable in terms of heat collection efficiency that the closed heat exchanger in the closed heating tower is a closed heat exchanger with fins.
In order to solve the above problems, the hermetically-sealed exchanger in the hermetically-sealed heating tower is composed of heat exchange coils, and between the heat exchange coils that are vertically adjacent to each other, a short filling plate extends in the width direction of the outside air intake, It may be characterized in that they are arranged in parallel at intervals. In order to solve the above problem, an upper water tank for spraying spray water is provided on the closed heat exchanger in the closed heating tower, and the upper water tank has a lower water tank and a circulation pump. It is preferable that they are communicated with each other. In order to solve the above-mentioned problems, a switching valve that selectively supplies sprayed water to the sprayed water supply pipe to the fluid spraying device and the upper spraying tank in the closed heating tower is a secondary pumping pump for circulation. It is preferable that it is provided on the side in order to use the spray water. In order to solve the above-mentioned problems, the fluid discharge device in this closed heating tower is characterized by being a water sprinkling pipe arranged near the outside air intake port and across the width direction of the outside air intake port. , Because of the structure of the fluid ejection device,
desirable.

[0006]

Embodiment 1 This embodiment is a typical embodiment of the invention described in claims 1, 2 and 7, 9. In FIG. 1, A is a cross flow type closed type heating tower, and a closed type heat exchanger B is vertically arranged on the outside air intake 10 side of the heating tower A, and the closed type heat exchange in the upper stage is arranged. With respect to the vessel B, the closed heat exchanger B in the lower stage is sequentially displaced from the exhaust port 11 side. These hermetic heat exchangers B are stacked in a vertical manner without any gap therebetween, and serve as a finned hermetic heat exchanger. An upper sprinkler tank 20 is provided above the sealed heat exchanger B, and the upper sprinkler tank 20 communicates with a lower water tank 30 via a circulation pumping pump P by a spray water supply pipe 21. The operation of this form will be described below together with the method of using it.

In spring, summer, and autumn, circulating cooling water is made to flow in the finned closed heat exchanger B, the pump P is further activated, and spray water is sprayed from the upper water tank 20 onto the finned closed heat exchanger. And cool it by indirect contact with spray water. The sprayed water whose temperature has risen is in direct contact with the outside airflow taken from the outside air inlet 10, is cooled by the latent heat of vaporization by evaporation, and is collected in the lower water tank 30.
Be reused.

In the winter, at this time, the circulating antifreeze which is a heat medium flowing in the finned closed heat exchange section B and the air flow taken from the outside air intake 10 side of the heating tower A are indirectly contacted with each other. Then, the circulating antifreeze solution is heated and then sent to the load section for cyclic use. Closed heat exchanger B with fins at each stage
The water droplets and ice that have frosted on the outside air intake 10 side are removed manually. At this time, water droplets and ice removed from the upper finned closed heat exchanger B located closer to the outside air intake port 10 side than the lower finned closed heat exchanger B are the exhaust port 11 side. It does not collide with the closed heat exchanger B with fins in the lower tier, which is arranged at a different position, and drops onto the lower water tank 30 without refrosting and icing on the closed heat exchanger B with fins in the lower tier. To do.

Embodiment 2 This form is a typical embodiment of the invention described in claims 1, 3, 7, and 9. The structure different from that of the first embodiment is that the sealed heat exchangers B are arranged in a hierarchical manner at intervals C (see FIG. 2). In addition, the same reference numerals as those in the first embodiment have the same configurations and operations. Since this embodiment operates in substantially the same manner as in the first embodiment and the upper and lower hermetic heat exchangers B are arranged at a mutual interval C, water drops and ice frosted in the winter season are removed to a further depth. To be done.

Embodiment 3 This embodiment is a typical embodiment of the invention described in claims 1, 2, 4, 5 and 7. The structure different from that of the first embodiment is that the sealed heat exchanger B is exclusively for dry air, is provided on the outside air intake side, and the filler D for using both dry air and wet air is provided on the exhaust port side. I am doing it. The water sprinkling part in this heating tower A is a water sprinkling device E for sprinkling sprayed water on the filling material D, and this water sprinkling device E uses a water passage F for supplying sprayed water to a circulation pumping pump P1 to the lower water tank 30. Through (see FIG. 3). In addition, the same reference numerals as those in the first embodiment have the same configurations and operations. The operation of this form will be described below. During the period other than the winter season, the pump P1 is activated to start the filling material D.
The spraying water is sprayed on the spraying device E, and the filler D
The circulating cooling water flowing inside is indirectly cooled by this spray water. Further, the circulating cooling water flowing in the non-scattering finned closed heat exchanger B is cooled by indirect contact with the outside airflow taken from the outside air intake 10. Further, the air flow and the sprayed water are in direct contact with each other, and the sprayed water is cooled by the latent heat effect of vaporization by evaporation and collected in the lower water tank 30 for reuse. In the winter, the pump P1 is stopped, the sprayed water is not sprayed on the filler D, and the circulating antifreeze liquid flowing in the finned closed heat exchanger B and the filler D is introduced into the outside air inlet 10
The circulating antifreeze is heated by indirect contact with the outside air flow known from the above, and is circulated and used.

Embodiment 4 This embodiment is a typical embodiment of the invention described in claims 1, 2, 6, 7, 9, 10 and 11, and the configuration different from that of Embodiment 1 is as follows. On the street. In the lower water tank 30 of the heating tower A, a sprinkling pipe J which is a kind of a fluid discharge device for flowing a fluid along the upper surface of the lower water tank 30 and for pouring adhering substances such as water droplets and ice removed into the falling water tank 31 is provided in the outside air. This outside air intake 10 near the intake 10
(See FIG. 4). A rotary valve M, which is a kind of a switching valve for selectively supplying spray water to the spray pipe J and the spray water supply pipe 21 to the upper water tank 20, is provided on the secondary side of the pump P. A large number of sprinkling nozzles J1 are provided in the sprinkling pipe J at intervals in the width direction of the outside air intake port 10, and the tip of the sprinkling nozzle J1 is connected to the lower water tank 3
It is attached toward the upper surface of 0. The operation of this mode is the same as that of the first embodiment except in winter. Next, the action peculiar to this form in winter will be described.
The rotary valve M is switched to cut off the supply of spray water to the upper water tank 20 and communicate with the spray pipe J (see FIG. 4). Next, water drops that have dropped onto the upper surface of the lower water tank 30.
Each sprinkling nozzle J1 of the sprinkling pipe J for adhering substances such as ice
Is poured into the drop water tank 31 by the sprayed water discharged toward the upper surface of the lower water tank 30. In some cases, the groundwater may be used as hot water without using the rotary valve M, and the groundwater may be discharged as hot water. In this case, as in the first embodiment, the upper water tank 2
0 and the lower water tank 30 are connected by the spray water supply pipe 21 via the pump P.

Embodiment 5 This embodiment is a typical embodiment of the invention described in claims 1, 2, 8 and 9, and the configuration different from that of Embodiment 1 is as follows. The closed type exchanger B comprises a heat exchange coil B1, and a short filling plate B2 is arranged in parallel across the width direction of the outside air intake port 10 between the heat exchange coils B1 which are vertically adjacent to each other. (See FIG. 5). In addition, the same reference numerals as those in the first embodiment indicate the same configurations and operations. This mode operates in substantially the same manner as in the first embodiment, and the heat exchanger coil B is used except in the winter season.
The circulating cooling water flowing in 1 is indirectly contacted with the sprayed water, and the short filling plate B2 is used as a fin, and the temperature of the circulating cooling water flowing in the heat exchange coil B1 is applied to the filling plate B2. Conducts, dissipates heat and cools. In the winter season, the circulating antifreeze liquid flowing in the heat exchange coil B1 is indirectly contacted with the outside air flow, and the short filling plate B2 is used.
The temperature of the air flow flowing therethrough is collected by the filling plate B2 to heat the circulating antifreeze liquid.

[0013]

According to the first aspect of the present invention, in winter, the circulating antifreeze liquid, which is the heat medium flowing in the closed heat exchange section, is indirectly contacted with the air flow taken from the outside air intake side of the heating tower. After heating the circulating antifreeze liquid, it can be sent to the load part for cyclic use. Water droplets and ice removed from the upper closed heat exchanger located closer to the outside air intake side with respect to the lower closed heat exchanger, the lower closed heat exchange placed on the exhaust port side. It does not collide with the vessel, and can drop onto the lower water tank without refrosting and icing on the finned closed heat exchanger. The invention according to claim 2 exhibits the effect of the invention according to claim 1, and since the hermetically sealed heat exchangers are vertically stacked, the indirect contact between the outside airflow and the anti-hermetically sealed heat exchanger is ensured. Can be done.

According to the invention of claim 3, claim 1
In addition to the effects of the invention described above, since the upper and lower hermetic heat exchangers are arranged at an interval from each other, it is possible to remove frosted water droplets and ice deeper.

In addition to the effects of the first, second, and third aspects of the invention, in addition to the effects of the first, second, and third aspects, spray water is sprayed on the filler except in winter, and the inside of the filler is filled. The circulating circulating cooling water can be cooled with this spray water. In addition to this, the circulating cooling water flowing in the non-scattering closed heat exchanger is cooled by indirect contact with the air flow taken from the outside air intake, and the air flow and this spray water are directly contacted and sprayed. Water can be cooled by the latent heat of vaporization and can be collected in the lower water tank and reused, and the cooling capacity can be secured especially in the summer. In the winter, without spraying water to the filler, the circulating antifreeze flowing through the closed heat exchanger and the filler is indirectly contacted with the outside airflow to heat the circulating antifreeze for cyclic use. it can.

According to the sixth aspect of the invention, in addition to the effects of the first, second, third, fourth, fifth aspect, in winter, water drops, ice, and other deposits that have fallen on the upper surface of the lower water tank. By the fluid discharged from the fluid discharge device,
It can be poured into the drop water tank. As a result, it is possible to prevent deposits such as water drops and ice that have flowed down from staying on the upper surface of the lower water tank, and to prevent re-freezing. In the invention described in claim 7, claims 1, 2,
In addition to the effects of the inventions described in 3, 5, and 6, the heat exchanger with fins can increase the heat collection effect in winter, and the circulating antifreeze can be appropriately heated. According to the invention described in claim 8, in addition to the effect of the invention described in claims 1, 2, 3, 4, 5, and 6, the circulating cooling water flowing in the heat exchanger coil is indirectly connected to the outside airflow except during the winter season. The contact plate, and using the short filling plate as a fin, to conduct the temperature of the circulating cooling water flowing in the heat exchange coil to the filling plate,
It can radiate heat and cool. In winter, the circulating antifreeze liquid flowing in the heat exchange coil is indirectly contacted with the outside airflow, and the temperature of the air flow flowing between the short filling plates is collected by the filling plates to heat the circulating antifreezing liquid. it can. In the invention described in claim 9, claims 1, 2,
In addition to the effects of the inventions described in 3, 6, 7, and 8, in addition to the winter season, spray water can be sprayed on the sealed heat exchanger by starting the pump to cool the circulating cooling water. According to a tenth aspect of the invention, in addition to the effects of the sixth and ninth aspects of the invention, by operating the switching valve, spray water is supplied to the upper sprinkler tank except in winter, and the fluid discharge pipe is used in winter. It can be supplied to the device and the spray water can be used effectively. Claim 11
In addition to the effects of the sixth and tenth aspects of the present invention, by using the fluid discharge device as the sprinkling pipe, the structure can be simplified, and water drops that have fallen toward the outside air intake port. It can be poured into a drop water tank without leaving any deposits such as ice. In Embodiments 1 and 5, the upper sprinkler tank has the same sprinkler pipe as the present invention. In the fourth embodiment, the sprinkling pipe has been described as a sprinkling pipe with a nozzle.
The present invention is not limited to this, and a sprinkling pipe having a large number of holes at intervals in the longitudinal direction is the same as the present invention.

[Brief description of the drawings]

FIG. 1 is a schematic front view of a first embodiment.

FIG. 2 is a schematic front view of the second embodiment.

FIG. 3 is a schematic front view of the third embodiment.

FIG. 4 is a schematic front view of the fourth embodiment.

FIG. 5 is a schematic front view of the fifth embodiment.

[Explanation of symbols]

 B Closed heat exchanger

Claims (11)

[Claims] 1. A closed type heat exchanger is arranged on the outside air intake side in a vertically hierarchical manner, and a closed type heat exchanger in a lower stage is sequentially displaced from an exhaust port side with respect to a closed type heat exchanger in an upper stage. A cross-flow closed heating tower that is characterized by being 2. The cross flow type hermetic heating tower according to claim 1, wherein the hermetic heat exchangers are stacked one above the other. 3. The cross flow type hermetic heating tower according to claim 1, wherein the hermetic heat exchangers are arranged in a vertically stacked manner at intervals. 4. The closed heat exchanger is exclusively for dry air, and a filler for using both dry air and humid air is provided on the exhaust port side. The cross-flow closed heating tower described. 5. The water sprinkling section in the hermetic heating tower is a water sprinkling device for sprinkling sprinkling water on the filling material, and a supply pipe for supplying sprinkling water to the water sprinkling device comprises:
The cross flow type hermetic heating tower according to claim 4, wherein an on-off valve is arranged. 6. A fluid discharge device for causing a fluid to flow along the upper surface of a lower water tank of the hermetically-sealed heating tower to drop water droplets, ice, and other deposits removed from the hermetically-sealed heat exchanger and to flow into the water tank. The cross flow type closed type heating tower according to claim 1, 2, 3, 4 or 5, characterized by being provided. 7. The closed heat exchanger according to claim 1, wherein the closed heat exchanger is a closed heat exchanger with fins.
The cross-flow closed heating tower according to 3, 4, 5 or 6. 8. The closed type exchanger comprises heat exchange coils, and short filling plates are arranged in parallel across the outside air intake width direction between vertically adjacent heat exchange coils. The cross-flow closed heating tower according to claim 1, 2, 3, 4, 5 or 6. 9. An upper sprinkler tank for sprinkling sprinkling water is provided on the sealed heat exchanger, and the upper sprinkler tank is connected to the lower water tank through a pump for circulation to supply sprinkling water. Claims 1, 2, 3, 6, characterized in that
The cross-flow closed heating tower according to item 7 or 8. 10. A switching valve for selectively supplying sprayed water to the sprayed water supply pipe to the fluid discharge device and the upper sprinkler tank is provided on the secondary side of the circulation pump. A cross-flow closed heating tower according to claim 6 or 9. 11. The cross-flow type hermetic seal according to claim 6 or 10, wherein the fluid discharge device is a water sprinkling pipe that is arranged near the outside air intake port and extends in the width direction of the outside air intake port. Type heating tower.