KR20120034818A - Plate type water making apparatus - Google Patents

Abstract

A plate type water heater comprising a heater (10) for heating raw seawater with hot water to generate steam, and a condenser (30) for cooling the generated steam with cooling water to produce distilled water, which is discharged from the condenser (30). It is characterized in that it has a preheating means 40 which heats a part of the cooled water and flows into the heater 10 as raw material seawater. According to the plate-type fresh water generator, miniaturization and low cost can be achieved by efficiently heating and evaporating raw material seawater.

Description

Plate Type Tide Device {PLATE TYPE WATER MAKING APPARATUS}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a plate type water making device, and more particularly, to a plate type water making device which performs evaporation of raw material seawater and condensation of steam by a plate heat exchanger.

As a conventional plate type water tide device, for example, a configuration disclosed in Patent Document 1 is known. As shown in FIG. 7, the plate-type fresh water generator is a heater 50 which evaporates the raw seawater introduced from the raw water inlet 53 by hot water which can be used for cooling of a marine engine and discharges it from the raw material outlet 54. And evaporator 60 for evaporating droplets contained in the water vapor discharged from the heater 50, and condensed water vapor introduced from the evaporator 60 through the steam inlet 73 through cooling water to condense distilled water. It is provided with a condenser (70) for discharging from the distilled water outlet (74).

Both the heater 50 and the condenser 70 are plate heat exchangers, and are configured to exchange heat between the high temperature fluid and the low temperature fluid flowing between each of the stacked plurality of heat transfer plates. In the condenser 70, part of the cooling seawater heated and discharged by heat exchange with water vapor flows in from the raw water inlet 53 of the heater 50 as raw seawater.

Cited Reference 1: Japanese Patent Application Laid-Open No. 9-299927

Since the heat exchange efficiency of the raw material seawater and the hot water introduced into the heater 50 is not sufficient, the conventional plate-type water tide device as described above requires a large heat transfer area, resulting in a large heat transfer plate.

Therefore, an object of the present invention is to provide a plate-type fresh water generator which can achieve miniaturization and low cost by efficiently raising the heating temperature of raw material seawater.

In order to achieve the above object, the plate-type fresh water generator according to the first aspect of the present invention includes a heater for heating raw material seawater with hot water to generate steam, and a condenser for cooling the produced steam with cooling water to generate distilled water. The heater includes a plurality of heat transfer plates stacked between two end plates, and is configured to exchange heat by passing raw seawater and hot water alternately between adjacent heat transfer plates. A plate type water heater comprising a plurality of heat transfer plates stacked between two end plates, and configured to exchange heat by passing water vapor and cooling water alternately between adjacent heat transfer plates, wherein a part of the cooling water discharged from the plurality of heat sinks is provided. And preheating means for introducing the raw material into the heater as raw water. Shall be.

In addition, the plate-type water heater according to the second aspect of the present invention for achieving the above object is a heater for heating the raw seawater with hot water to generate steam, and a condenser for cooling the generated steam with cooling water to produce distilled water Wherein the heater has a plurality of heat transfer plates stacked between two end plates, and is configured to exchange heat by passing raw seawater and hot water alternately between adjacent heat transfer plates, and the plurality of heat exchangers are provided in two end plates. A plate freshener comprising a plurality of heat transfer plates stacked in between and configured to exchange heat by passing water vapor and cooling water alternately between adjacent heat transfer plates, wherein the condenser injects coolant from the end plate on one side, and And thermal bridges through portions of said plurality of heat transfer plates And discharging a part of the cooling water after the heat exchange to the end plate on one side, and further cooling heat of the remainder to heat exchange with water vapor through the heat transfer plate of the residue to discharge to the end plate on the other side, and discharged to the end plate on the other side. Cooling water is introduced into the heater as raw material seawater.

In addition, the plate-type fresh water generator according to the third aspect of the present invention for achieving the above object is a heater for heating the raw seawater with hot water to generate steam, and a condenser for cooling the generated steam with cooling water to produce distilled water. The heater includes a plurality of heat transfer plates stacked on two end plates, and is configured to exchange heat by passing raw seawater and hot water alternately between adjacent heat transfer plates, and the plurality of heat transfer units are stacked on two end plates. A plate water supply device having a plurality of heat transfer plates arranged and configured to exchange heat by passing water vapor and cooling water alternately between adjacent heat transfer plates, wherein the heater inflows raw material seawater to one end plate, Heat exchange with hot water is carried out through a part of the heat transfer plate, and after It is characterized in that the raw material sea water is further heat-exchanged with the hot water through the heat transfer plate of the remainder to be discharged to the other end plate.

In the plate type water tide device according to the third invention, the condenser introduces cooling water into the end plate on one side, exchanges heat with distilled water through a part of the plurality of stacked heat transfer plates, and part of the cooling water after the heat exchange on one side. In addition to discharging to the end plate, the remaining cooling water is further heat-exchanged with water vapor through the heat transfer plate of the remainder to be discharged to the other end plate, and the cooling water discharged to the other end plate is introduced into the heater as raw material seawater. Can be.

According to the plate type fresh water generator of the present invention, the raw material seawater can be efficiently heated, thereby miniaturizing and reducing the cost.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic configuration diagram of a plate type tide device according to a first embodiment of the present invention.
Fig. 2 is a perspective view of main parts of a heater and a condenser in the plate type water tide device shown in Fig. 1;
3 is a schematic configuration diagram of a plate type tide device according to a second embodiment of the present invention.
Fig. 4 is a perspective view of main parts of the condenser in the plate type water tide device shown in Fig. 3;
5 is a schematic configuration diagram of a plate-type tide device according to a third embodiment of the present invention.
Fig. 6 is a perspective view of main parts of the heater in the plate type water tide device shown in Fig. 5;
7 is a schematic configuration diagram of a conventional plate-type tide device.

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described with reference to attached drawing.

(First Embodiment)

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic configuration diagram of a plate type tide device according to a first embodiment of the present invention. As shown in FIG. 1, the plate-type fresh water generator 1a heats raw material seawater to produce steam, generates an evaporator 20 for separating a heater 10, steam and brine (concentrated seawater), and distilled water. The condenser 30 is included, and it can be used more suitably as a tide device for ships.

The heater 10 includes a raw water inlet 11 for introducing and discharging raw seawater, a steam brine outlet 12, and a hot water inlet 13 for introducing and discharging hot water such as jacket cooling water of a marine engine. ) And the hot water outlet 14, the raw seawater flowing from the raw water inlet 11 is heated and evaporated by the hot water introduced from the hot water inlet 13, and is discharged from the steam and brine outlet 12 .

The evaporator 20 is discharged from the steam and brine outlet 12, the heating raw water inlet 21 for introducing the raw seawater after heating, the steam outlet 22 for discharging steam generated from the raw seawater, and the remaining brine The brine discharge port 23 which discharges is provided.

The condenser 30 has a steam inlet 31 for introducing water vapor discharged from the steam outlet 22, a distilled water outlet 32 for discharging distilled water obtained by cooling steam, and cooling water for inlet and discharge of cooling water, respectively. And a cooling water inlet 33 and a cooling water outlet 34. Cooling water is introduced into the cooling water inlet 33 as the cooling water by the operation of the ejector pump 35, and some of the seawater discharged from the cooling water outlet 34 is used as driving water of the ejector 36, and the other part is a heater. It is used as raw material seawater flowing into the raw material water inlet 11 of (10), and the remainder is discharged to the outside of the ship. The distilled water discharged from the distilled water outlet 32 is introduced into the purified water tank (not shown) by the distilled water pump 37. The vacuum of the evaporator 20 and the condenser 30 is maintained by suction of the non-condensable gas connected to the maximum negative pressure portion of the water ejector 36.

The heater 10 and the condenser 30 are provided with a plate type heat exchanger, and the structure is the same as that of a conventional plate type water heater. As shown in the perspective view of the main part of Fig. 2, the heater 10 is configured so that two types of heat transfer plates 103a and 103b are alternately arranged in a plurality between the two end plates 101 and 102, and the edges are connected to the connecting rods 10a, Bound by 10a). Each heat transfer plate (103a, 103b) is formed in a rectangular shape, the two raw material water distribution ports (104, 105) forming a flow path of the raw material seawater and steam are disposed diagonally on one side, the two hot water to form a flow path of hot water The distribution ports 106 and 107 are arranged diagonally on the other side.

The raw material water inlet 11, the steam-brain outlet 12, the hot water inlet 13, and the hot water outlet 14 are all provided on the end plate 101 on one side, and the raw materials are provided in the plurality of heat transfer plates 103a and 103b. It is connected to the flow path formed by the water distribution port 104, the flow path formed by the raw material water distribution port 105, the flow path formed by the hot water distribution port 106, and the flow path formed in the hot water distribution port 107, respectively. It is.

Each of the heat transfer plates 103a and 103b has grooves 108a and 108b formed on one side thereof, and the grooves 108a of the heat transfer plate 103a communicate with each other through the two raw water flow ports 104 and 105, respectively. The two hot water outlets 106 and 107 are isolated, and the groove 108b of the heat transfer plate 103b isolates the two raw material water outlets 104 and 105 from each other, while the two hot water outlets 106 and 107 communicate with each other. Between adjacent heat transfer plates 103a and 103b is sealed by a gasket (not shown). 2, the flow path formed in the stacking direction of the heat transfer plates 103a and 103b represents a portion communicating with the grooves 108a and 108b with a broken line and is isolated from the grooves 108a and 108b. The part is shown with the solid line.

By such a configuration of the heater 10, the raw water and hot water introduced from the raw water inlet 11 and the hot water inlet 13 are transferred to the groove 108a of the heat transfer plate 103a and the groove of the heat transfer plate 103b. Since 108b flows respectively, when looking at the lamination direction of the heat transfer plates 103a and 103b, raw material seawater and hot water pass between the adjacent heat transfer plates 103a and 103b alternately. As a result, heat exchange is performed between the raw material seawater and the hot water through the heat transfer plates 103a and 103b. The raw material seawater and hot water which have completed heat exchange are discharged from the steam brine outlet 12 and the hot water outlet 14, respectively.

The condenser 30 also has the same structure as the heater 10, and the two types of heat transfer plates 113a and 113b are arranged in a plurality of alternating layers between the two end plates 111 and 112, respectively, and the edges are connected to the connecting rods 30a. And 30a). Each heat transfer plate 113a, 113b is formed in the shape of a square, and two distillation flow ports 114, 115 forming a flow path of steam (or distilled water) are arranged at a diagonal of one side, and two flow paths of cooling water are formed. Cooling water distribution ports 116 and 117 are arranged diagonally on the other side.

The steam inlet 31, the distilled water outlet 32, the cooling water inlet 33, and the cooling water outlet 34 are all provided in the end plate 111 on one side, and the distillation flow ports in the plurality of heat transfer plates 113a and 113b. The flow path formed by the 114, the flow path formed by the distillation flow opening 115, the flow path formed by the cooling water flow opening 116, and the flow path formed by the cooling water flow opening 117 are respectively connected.

Each of the heat transfer plates 113a and 113b has grooves 118a and 118b formed on one side thereof, and the grooves 118a of the heat transfer plates 113a communicate with each other between two distillation channels 114 and 115, The cooling water distribution ports 116 and 117 are isolated, and the groove portion 118b of the heat transfer plate 113b isolates the two raw water distribution ports 114 and 115 from each other, while the two hot water distribution ports 116 and 117 communicate with each other. Between adjacent heat transfer plates 113a and 113b is sealed by a gasket (not shown). In addition, for ease of understanding in FIG. 2, portions where the flow paths formed in the stacking direction of the heat transfer plates 113a and 113b communicate with the grooves 118a and 118b are indicated by broken lines and are separated from the grooves 118a and 118b. The part is shown with a solid line.

By this configuration of the condenser 30, the water vapor and the cooling water introduced from the steam inlet 31 and the cooling water inlet 33 are transferred to the groove 118a of the heat transfer plate 113a and the groove 118b of the heat transfer plate 113b. Since each flows through, the water vapor and cooling water alternately pass between adjacent heat transfer plates 113a and 113b when viewed in the stacking direction of heat transfer plates 113a and 113b. As a result, heat exchange is performed between the water vapor and the cooling water via the heat transfer plates 113a and 113b. The distilled water and cooling water produced by completing the heat exchange are discharged from the distilled water outlet 32 and the cooling water outlet 34, respectively.

The cooling water discharged from the cooling water discharge port 34 is heated by heat exchange with water vapor, and partly flows into the heater 10 as raw seawater. Such a structure is the same as that of a conventional plate-type fresh water generator. However, when the cooling water flows into the heater 10 as it is as raw material seawater, the temperature of the raw material seawater is not sufficiently raised, so that the heater is raised to a temperature necessary for evaporation. In (10), much heat transfer area is required. This has been found by the inventors of the present invention that the flow rate of the raw material seawater between the heat transfer plates 103a is very slow and a good heat transfer coefficient can be obtained.

Therefore, in this embodiment, the preheating apparatus is provided in order to make it possible to raise the temperature of the raw material seawater which flows into the heater 10 to near the evaporation temperature. Specifically, as shown in FIG. 1, a heat exchanger 40 is disposed between the cooling water outlet 34 and the raw water inlet 11, and the jacket cooling water and the like introduced into the hot water inlet 13 of the heater 10. By using a part of the hot water as the heating source of the heat exchanger 40, the temperature of the raw seawater passing through the heat exchanger 40 can be efficiently increased to a desired temperature.

According to the plate-type fresh water generator 1a of this embodiment, a part of cooling water discharged from the condenser 30 is heated in the heat exchanger 40, and then flows into the heater 10 as raw material seawater, and the heater 10 The raw material seawater flowing over the heat transfer plate 103a can be evaporated at an initial stage, and heat exchange can be performed at high speed with the hot water flowing over the heat transfer plate 103b. Therefore, the heat transfer coefficient in the heater 10 can be increased, and the heater 10 can be downsized and reduced in cost.

Although the structure of the heat exchanger 40 is not specifically limited, For example, a plate type heat exchanger is possible. Since the plate type heat exchanger can easily adjust the number of plates, the preheating temperature of the raw material seawater can be easily controlled, and the flow velocity of the fluid can be increased, thereby improving heat exchange efficiency. It also has the effect of making it difficult to close the flow path.

(2nd Embodiment)

Fig. 3 is a schematic configuration diagram of a plate type tide device according to a second embodiment of the present invention, and Fig. 4 is a perspective view of main parts of the condenser. In the plate type water trough 1a of the present embodiment, in the plate type water trough 1a of the first embodiment, instead of providing the heat exchanger 40, a preheating part of raw material seawater is provided in the condenser 30. will be. 3 and 4, the same components as in the first embodiment shown in FIGS. 1 and 2 are denoted by the same reference numerals, and description thereof will be omitted.

As shown in Fig. 4, the condenser 39 of the present embodiment includes a boundary plate 39a between two adjacent heat transfer plates 113a and 113b. The boundary plate 39a, like the heat transfer plates 113a and 113b, includes the distillation distribution ports 114 and 115 and the cooling water distribution port 116, but does not include the cooling water distribution port 117 through which the introduced cooling water passes. Do not. The raw material sea water outlet 341 communicates with the cooling water inlet 33 through the cooling water outlets 116 and 117 of the heat transfer plates 113a and 113b and the cooling water outlet 116 of the boundary plate 39a on the other end plate 112. ) Is formed.

In the condenser 39 having such a configuration, the cooling seawater introduced into the end plate 111 on one side through the cooling water inlet 33 performs heat exchange with water vapor through a part of the stacked heat transfer plates 113a and 113b, A part of cooling sea water after heat exchange is discharged | emitted through the cooling water discharge port 34 from the end plate 111 of one side. The remainder of the cooled seawater after heat exchange further performs heat exchange with water vapor through the remainders of the stacked heat transfer plates 113a and 113b, and is discharged to the raw material seawater discharge port 341 at the other end plate 112. Cooling seawater discharged from the raw material sea water discharge port 341 flows into the raw water water inlet 11 of the heater 10 as shown in FIG.

In the plate type water tank 1b of the present embodiment, the condenser 39 is formed between the boundary plate 39a and the other end plate 112 after cooling seawater discharged from the raw material seawater discharge port 341 exchanges heat with water vapor. Further heat exchange with water vapor results in a higher temperature than the cooling seawater discharged from the condenser 30 shown in FIG. That is, since the condenser 39 of this embodiment comprises the preheating part 41 which pre-heats the raw material seawater which flows into the heater 10 between the boundary plate 39a and the other end plate 112, The same effects as in the embodiment can be achieved.

The temperature and flow rate of the cooling seawater discharged from the raw seawater discharge port 341 can be easily adjusted by appropriately selecting the insertion position of the boundary plate 39a between the plurality of laminated heat transfer plates 113a and 113b. That is, as the insertion position of the boundary plate 39a moves from the other end plate 112 side to the one end plate 111 side, the temperature of the raw seawater discharged from the raw seawater discharge port 341 becomes high, and the heat recovery rate is high. .

In the present embodiment, only one boundary plate 39a is provided. However, when a large number of heat transfer plates 113a and 113b exist between the boundary plate 39a and the other end plate 112, the boundary is provided. By providing the plate further, it is also possible to configure the heat exchange with the water vapor to be repeated.

Moreover, as a means for forming the said flow path of cooling water, the boundary plate 39a is not necessarily limited to an installation structure, For example, it is provided with the plug which closes the cooling water distribution port 117 of the heat transfer plate 113a or 113b. Other configurations may be sufficient, for example.

Since the condenser 39 of the present embodiment can be made smaller in size than the conventional condenser and has a built-in preheating part 41, further miniaturization can be achieved, and in the case where there is a limitation in the installation space of the heat exchanger, Particularly effective.

In addition, since the preheating part 41 is a plate type heat exchanger, the same effect as the case where the heat exchanger 40 in 1st Embodiment is a plate type | mold can be acquired. In particular, the effect of hardly closing the flow path is remarkable when the condenser 39 includes the preheating part 41 as in the present embodiment.

(Third Embodiment)

Fig. 5 is a schematic configuration diagram of a plate type water tide device according to a third embodiment of the present invention, and Fig. 6 is a perspective view of main parts of a heater. In the plate type fresh water generator 1a of the present embodiment, in the plate type fresh water generator 1a of the first embodiment, the preheating portion of raw material seawater is provided in the heater 10 instead of the heat exchanger 40. 5 and 6, the same components as those in the first embodiment shown in FIGS. 1 and 2 are denoted by the same reference numerals, and description thereof will be omitted.

As shown in Fig. 6, the heater 19 of the present embodiment includes a boundary plate 19a between two adjacent heat transfer plates 103a and 103b. The boundary plate 19a, like the heat transfer plates 103a and 103b, is prepared in contrast to the raw material water distribution port 104 and the hot water distribution port 106 and 107, and the raw material water distribution port 105 through which the introduced raw material seawater passes. Is not provided. The raw water inlet 11 is not installed on the end plate 101 on one side, but is installed on the other end plate 102, and the raw water inlet 11 is a raw material water outlet of the heat transfer plates 103a and 103b. The water vapor and the brine outlet 12 communicate with each other through the raw material water distribution port 104 of the 104 and 105 and the boundary plate 19a.

In the heater 19 having such a configuration, the raw material seawater introduced into the other end plate 102 through the raw water inlet 11 is heat-exchanged with hot water through a part of the stacked heat transfer plates 103a and 103b, The raw material seawater part after the heat exchange is further heat-exchanged through the heat transfer plates 103a and 103b of the remainder, and is discharged from the end plate 111 on one side through the water vapor brine outlet 12.

In the plate-type water heater 1c of the present embodiment, the heater 19 heat-exchanges the hot water with the hot water between the boundary plate 19a and the other end plate 102 after flowing into the end plate 102 on the other side. The heat exchanger further comprises a preheating unit 42 for preheating raw material seawater between the boundary plate 19a and the other end plate 102. Therefore, the plate-type fresh water supply apparatus 1c of this embodiment can also acquire the same effect as 1st embodiment.

The temperature of the raw seawater passing through the raw water distribution port 104 of the boundary plate 19a can be easily adjusted by appropriately selecting the insertion position of the boundary plate 19a between the plurality of laminated heat transfer plates 103a and 103b. Do. That is, as the insertion position of the boundary plate 19a moves from the end plate 102 side of the other side to the side plate 101 side of the one side, the temperature of the raw material seawater passing through the raw material water distribution port 104 of the boundary plate 19a Becomes higher.

In the present embodiment, one boundary plate 19a is provided. However, when a plurality of heat transfer plates 103a and 103b exist between the boundary plate 19a and the other end plate 102, the boundary plate is further provided. By providing, the heat exchange with water vapor can be comprised so that it may repeat further.

In addition, the means for forming the raw material seawater flow path is not limited to the configuration in which the boundary plate 19a is provided. For example, the raw material water distribution port 105 of the heat transfer plate 103a or 103b is closed. Another configuration may be used, such as having a plug.

The heater 19 of the present embodiment can be further miniaturized by the configuration in which the preheating unit 42 which is a small improvement of the conventional heater can be built in, and when there is a limitation of the installation space of the heat exchanger, Particularly effective.

In addition, since the preheating part 42 is a plate type heat exchanger, the heat exchanger 40 in 1st Embodiment can acquire the same effect as the case of a plate type | mold.

In addition, in the plate type water tank 1c of this embodiment, the structure of the condenser 30 is the structure of the condenser 39 in 2nd Embodiment which showed the structure of FIG. 4, and the raw material seawater discharge port of the condenser 39 ( By constructing the raw material seawater discharged from 341 into the heater 19, further miniaturization and high efficiency can be achieved.

1a, 1b, 1c: Plate type tide device
10,19: heater
101,102,111,112: veneer
103a, 103b, 113a, 113b: heat transfer plate
19a: boundary plate
20: evaporator
30,39: Avenger
39a: border plate
40: heat exchanger
41,42 preheater

Claims (4)

A heater for heating the raw seawater with hot water to generate steam, and a condenser for cooling the generated steam with cooling water to generate distilled water, the heater having a plurality of heat transfer plates stacked between two end plates. And alternately heat-transfer the raw material seawater and hot water between the adjacent heat transfer plates, and the plurality of heat transfer devices include a plurality of heat transfer plates stacked between two end plates, and between each adjacent heat transfer plates. And a plate type tide device configured to exchange heat by passing cooling water alternately,
The plurality of condensers constitute a preheating part between the heat transfer plate and the end plate on the other side, inject cooling water from the end plate on one side, perform heat exchange with water vapor through a part of the plurality of stacked heat transfer plates, and coolant after heat exchange. A portion of the single plate is discharged from the end plate on one side, and the cooling water of the remaining portion flows into the remainder of the heat transfer plate constituting the preheating portion through a flow path, and further heat exchanges with water vapor through the heat transfer plate of the remaining portion to form the other end plate. And the cooling water of the preheating part discharged from the end plate on the other side is introduced into the heater as raw material seawater.
Plate type tide device. The method of claim 1,
The heater inflows raw material seawater from the end plate on one side, performs heat exchange with hot water through a portion of the plurality of stacked heat transfer plates, and further heat-exchanges the raw water after heat exchange with hot water through the remaining heat transfer plate. Characterized in that configured to discharge from the end plate of
Plate type tide device. The method according to claim 1 or 2,
The condenser includes a boundary plate interposed between any two adjacent heat transfer plates,
The boundary plate is formed with a cooling water distribution port through which the remaining coolant passes, and the cooling water exchanged with water vapor between the boundary plate and the other end plate through the cooling water distribution port flows into the heater.
Plate type tide device. The method of claim 3,
Each of the heat transfer plates is formed in a rectangular shape, and two cooling water distribution ports forming a cooling water flow path are diagonally disposed.
The cooling water distribution port of the boundary plate is arranged in correspondence with the cooling water distribution port through which the introduced cooling water flows out of the two cooling water distribution ports of the heat transfer plate.
Plate type tide device.

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