JP7431447B2 - Distilled water production equipment - Google Patents

Description

The present invention relates to a distilled water production apparatus for producing distilled water.

2. Description of the Related Art Distilled water production apparatuses are known as devices that produce highly pure distilled water with little contamination of impurities for use in experiments and the like (see, for example, Patent Document 1). As shown in FIGS. 11 and 12, for example, this distilled water production apparatus is supplied with water from a water pipe 96, and is connected to a pressure reducing valve 97 having, for example, a pressure switch 97a, and a pretreatment cartridge along the water flow indicated by an arrow in the figure. 98, an ion exchange resin cartridge 99, an ion exchange water quality meter electrode 114, a flow rate sensor 107, and a boiler (steam generating section) 91 that heats the raw water for distillation supplied through the boiler feed water electromagnetic valve 108 to generate steam. Be prepared.

Further, the distilled water production device is installed above the boiler 91, and introduces steam from the boiler 91 and cools it with cooling water supplied through, for example, the water pipe 96, the pressure reducing valve 97, and the cooling water solenoid valve 106. A condenser (cooling section) 92 for obtaining pure water (distilled water) is provided. These boiler 91 and condenser 92 are provided inside the casing 90, and the pure water obtained by the condenser 92 is once stored in a distilled water tank 112 and then collected through a water sampling unit 93 as needed. Water is done.

In such a distilled water production apparatus, the impurity concentration of the raw water inside the boiler 91 gradually increases as distillation progresses, so the raw water is periodically drained to maintain the quality of the distilled water in an optimal state. need to be drained. Drainage of raw water from the boiler 91 is performed, for example, through a drain valve 109 provided below the boiler 91, a drain pipe 113, and a drain hose 113a. In addition, in this drain pipe 113, for example, drainage of cooling water from the condenser 92, drainage of initial distillation water through the electromagnetic valve 111 for draining initial drainage water, and drainage from the water level adjustment tank 110 may also be mixed.

As for the drainage of raw water, since the fall of the raw water under its own weight is generally used, the distilled water production apparatus is designed so that the drainage position of the boiler 91 is higher than the position of the drain port 94a of the drainage equipment 94. For example, it is placed above the installation equipment such as the installation stand 95 which can gain more height than the drainage equipment 94.

On the other hand, if the distilled water production apparatus is installed at a low location such as on the floor, the position of the drainage port 94a of the drainage equipment 94 may be higher than the drainage position of the boiler 91. In this case, it may be possible to install drainage equipment 94 separately and adjust the height, but in many cases this is not possible, and other methods include using drainage equipment such as electromagnetic pumps or magnet pumps. may also be considered.

Utility Model Publication No. 59-61895

However, when using a drainage system, choosing one with heat-resistant specifications in consideration of the drainage temperature can be expensive, and depending on the equipment configuration, priming water may be required for drainage, resulting in installation problems. There is a problem that it is difficult to adopt a method using a drainage device because there is a concern that not only the related cost will increase but also the time required for drainage will become longer.

Furthermore, if construction of the drainage equipment 94 is impossible, it may be difficult to install the distilled water production device in the first place, or there may be restrictions such as being able to install it only in very limited locations. becomes. In such a case, even if there is a place where it can be installed, it may be installed in a place that is inconvenient for the user, and there is a concern that convenience (productivity) will be significantly reduced. Furthermore, there is also a need to effectively utilize empty space, such as the space below the installation stand 95, and to save space for the entire installation equipment. As described above, the conventional distilled water production apparatus disclosed in Patent Document 1 has various problems regarding the installation of the apparatus.

The present invention has been made in view of the above circumstances, and is a distillation system that eliminates the need for construction of drainage equipment, solves problems when using drainage equipment, and improves the degree of freedom in installing the equipment. The purpose is to provide water production equipment.

The distilled water production apparatus according to the present invention includes a steam generation section that stores and heats raw material water to generate steam, and a cooling section that cools the steam using cooling water to produce distilled water. The distillation apparatus is characterized by comprising a main body part and a drainage unit which is provided so as to be able to be arranged separately from the distillation main body part and which discharges the raw material water stored in the steam generating part to the outside.

In one embodiment of the present invention, the drainage unit drains mixed water obtained by mixing the raw material water with the cooling water that has passed through the cooling section.

In another embodiment of the present invention, the drainage unit is configured to be able to be placed at a position higher than the drainage position of the steam generator.

In yet another embodiment of the present invention, the drainage unit includes a sealed chamber into which the raw water can be introduced, a negative pressure pump that brings an internal space of the sealed chamber into a negative pressure state, and an internal space of the sealed chamber. an atmosphere release valve that allows the space to communicate with the outside air; and the cooling water is passed through to draw the raw water from inside the closed chamber, the raw water is mixed with the cooling water, and the mixed water is discharged. It has an aspirator.

In yet another embodiment of the present invention, the drainage unit has a partition plate that divides the internal space of the housing into an upper space and a lower space, the sealed chamber is disposed in the upper space, and the negative pressure pump, Of the atmosphere release valve and the aspirator, at least the aspirator is disposed in the lower space.

The aspirator includes a first inlet for introducing the cooling water into the interior, a second inlet for sucking the raw water into the interior, and an outlet for discharging the mixed water, and The unit is configured to be able to adjust the suction amount of the raw material water and the drainage temperature of the mixed water depending on the separation distance between the second inlet and the closed chamber and the flow rate of the cooling water.

In yet another embodiment of the present invention, the drainage unit includes a sealed chamber into which the raw water can be introduced, a first pressurizing pump that applies pressure to an internal space of the sealed chamber, and a first pressure pump that applies pressure to an internal space of the sealed chamber. an atmosphere release valve that allows communication of the internal space with the outside air; and the cooling water is passed through to join the raw water pumped from the inside of the sealed chamber, and the raw water is mixed with the cooling water to perform the mixing. and an aspirator for discharging water.

In yet another embodiment of the present invention, the drainage unit includes a sealed chamber into which the raw water can be introduced, a first pressurizing pump that applies pressure to an internal space of the sealed chamber, and a first pressure pump that applies pressure to an internal space of the sealed chamber. An atmosphere release valve that allows communication of the internal space with the outside air is introduced, and the cooling water is introduced to join the raw water pumped from the inside of the sealed chamber, and the raw water is mixed with the cooling water to produce mixed water. It has a trifurcated pipe for discharging, and a first check valve installed between the sealed chamber and the trifurcated pipe.

In yet another embodiment of the present invention, the distillation main body includes a second pressurizing pump that applies pressure to the internal space of the steam generation section, and the drainage unit is located at a drainage position of the steam generation section. It is also configured so that it can be placed in a high position.

In yet another embodiment of the present invention, the distillation device further includes a second check valve installed between the distillation main body and the drainage unit.

According to the present invention, there is no need to construct drainage equipment, the problems when using a drainage device can be solved, and the degree of freedom in installing the device can be improved.

FIG. 1 is an explanatory diagram schematically showing an installation example of a distilled water production apparatus according to a first embodiment of the present invention. FIG. 2 is an explanatory diagram schematically showing the internal configuration of a drainage unit of the distilled water production apparatus. FIG. 2 is an explanatory diagram schematically showing the overall internal configuration of the distilled water production apparatus. It is a figure which shows the result of the verification experiment of the drainage time and drainage temperature in the same distilled water production apparatus. FIG. 2 is an explanatory diagram schematically showing the overall internal configuration of a distilled water production apparatus according to a second embodiment of the present invention. FIG. 7 is an explanatory diagram schematically showing the overall internal configuration of a distilled water production apparatus according to a modification of the second embodiment of the present invention. It is an explanatory view showing roughly the whole internal composition of a distilled water manufacturing device concerning a 3rd embodiment of the present invention. It is an explanatory view showing roughly the whole internal composition of a distilled water production device concerning a modification of a 3rd embodiment of the present invention. It is an explanatory view showing roughly the whole internal composition of a distilled water manufacturing device concerning a 4th embodiment of the present invention. It is an explanatory view showing roughly the whole internal composition of a distilled water manufacturing device concerning a modification of a 4th embodiment of the present invention. FIG. 2 is an explanatory diagram schematically showing an installation example of a conventional distilled water production apparatus. FIG. 2 is an explanatory diagram schematically showing the overall internal configuration of a conventional distilled water production apparatus.

EMBODIMENT OF THE INVENTION Hereinafter, with reference to the accompanying drawings, a distilled water production apparatus according to an embodiment of the present invention will be described in detail. However, the following embodiments do not limit the invention according to each claim, and not all combinations of features described in the embodiments are essential to the solution of the invention. . Further, in the drawings of the embodiments of this specification, the scale and dimensions of each component may be exaggerated, or some components may be omitted.

[First embodiment]
FIG. 1 is an explanatory diagram schematically showing an installation example of a distilled water production apparatus 100 according to a first embodiment of the present invention, and FIG. 2 schematically shows an internal configuration of a drainage unit 20 of the distilled water production apparatus 100. An explanatory diagram, FIG. 3 is a diagram schematically showing the overall internal configuration of the distilled water production apparatus 100. As shown in FIG. 1, the distilled water production apparatus 100 of the first embodiment is installed at a predetermined installation location, such as a laboratory, and includes a distillation main body 10 for producing distilled water, and a distillation body 10 for producing distilled water. It includes a drainage unit 20 that is installed (separately arranged) separately from the main body part 10. Note that since the specific structure and configuration of the distilled water production apparatus 100 are well known, the explanation will be omitted here except for the parts that require explanation.

The distillation main body 10 is installed, for example, on the side of an installation stand 105 having a predetermined height, and the drainage unit 20 is installed, for example, on the upper surface of the installation stand 105. In this way, in the distilled water production apparatus 100, the drainage unit 20 is installed at a position higher than the drainage position of the steam generating section 30 (see FIG. 3), which will be described later, in the distillation main body 10 (hereinafter referred to as "high installation"). ).

In addition, the distillation main body part 10 and the drainage unit 20 are mutually connected by the piping 39 which consists of the piping 39a for drainage, and the piping 39b for cooling water. Further, a drainage facility 104 having a drainage port 104a through which drainage from the drainage unit 20 flows is installed, for example, on the side of the installation stand 105 on the opposite side from the distillation main body 10.

As shown in FIG. 3, the distillation main unit 10 of the distilled water production apparatus 100 is supplied with water from a water pipe 96 or the like, and is supplied with water directly through a pressure reducing valve 44 having a pressure switch 44a, or through a pretreatment cartridge 50, an ion A water vapor generator that generates water vapor by storing and heating the raw water supplied through the exchange resin cartridge 51, ion exchange water quality meter electrode 52, flow rate sensor 53, boiler feed water electromagnetic valve 54, and supply path 55. 30. Further, the distillation main unit 10 is connected to the downstream side of the steam generating unit 30 and is disposed above it, and cools the generated steam using cooling water supplied through the pressure reducing valve 44 and the cooling water electromagnetic valve 45. and a cooling section 40 for obtaining distilled water in which water vapor is condensed.

The steam generating section 30 includes a steam generating section main body 31 having an internal space capable of accommodating raw water therein, and a heater 32 disposed within the steam generating section main body 31 to heat the raw water. The steam generating section 30 is equipped with a water level adjusting tank 57 equipped with a float switch for adjusting the amount of raw water (water level) in the steam generating section main body 31, for example, and the water level adjusting tank 57 and the steam generating section main body A supply path 55 for supplying raw water is connected to each of the water pipes 31 .

A connecting pipe 31a is formed above the steam generating unit main body 31 and is connected to the cooling unit 40 in a communicating manner. It is connected to the pipe 41a. A splash preventer 31b is provided at the upper end of the connecting pipe 31a to prevent splashes of raw water boiled by heating by the heater 32 from entering the cooling section 40. Furthermore, a drain solenoid valve 33 that is opened and closed in order to drain the raw water in the steam generator main body 31 is provided below the steam generator main body 31.

The cooling unit 40 has a cooling pipe 41 that cools and liquefies water vapor flowing inside. A flexible pipe 42 is provided inside the cooling pipe 41 and is arranged along the flow direction of water vapor. As shown in the figure, the cooling pipe 41 is arranged to extend diagonally slightly downward toward the downstream side in the flow direction of water vapor.

The above-mentioned connecting pipe 41a is formed near the upstream end of the bottom surface of the cooling pipe 41, and is connected to the connecting pipe 31a from the steam generator main body 31. As a result, the water vapor generator main body 31 communicates with the cooling pipe 41, so that the generated water vapor can flow toward the cooling pipe 41.

Further, a collection hole (not shown) is formed near the downstream end of the bottom of the cooling pipe 41, and this collection hole is connected to the distilled water tank 59 through the distilled water quality meter electrode 61 and the piping 59a. ing. Therefore, the distilled water in which water vapor has been liquefied flows into the pipe 59a from the collection hole through the distilled water quality meter electrode 61, and is collected and stored in the distilled water tank 59. The initial distilled water is discharged from the distilled water quality meter electrode 61 to the drainage pipe 39a via the initial distilled water drain solenoid valve 58. The specific resistance of the produced distilled water is measured by a distilled water quality meter electrode 61 interposed between the collection hole and the distilled water tank 59, and the quality of the water is checked.

Further, a gas release hole 56 is formed near the downstream end of the upper surface of the cooling pipe 41 to release the low boiling point gas flowing inside the cooling pipe 41 to the outside air. This gas discharge hole 56 may be connected to the atmosphere release valve 43 (see FIG. 7, etc.). Therefore, the internal space of the cooling pipe 41 can communicate with the outside air via the gas discharge hole 56 and the atmosphere release valve 43.

The cooling water supplied through the pressure reducing valve 44 and the cooling water electromagnetic valve 45 as described above is supplied to the corrugated pipe 42 disposed in the cooling pipe 41 from the downstream side of the cooling pipe 41 to the upstream side (that is, the flow of water vapor). The water vapor flowing in the cooling pipe 41 is cooled. As a result, water vapor is liquefied within the cooling pipe 41 to produce distilled water. The cooling water flowing through the corrugated pipe 42 is supplied to the drainage unit 20 through the cooling water piping 39b and the check valve 46.

On the other hand, as shown in FIGS. 2 and 3, the drainage unit 20 of the distilled water production apparatus 100 includes raw water (hereinafter referred to as "boiler It has a closed chamber 21 into which water (also sometimes referred to as "water") can be introduced, and a negative pressure pump 22 that evacuates the internal space of this closed chamber 21 to bring it into a negative pressure state.

The drainage unit 20 also includes an atmosphere release valve 23 that allows the internal space of the sealed chamber 21 to communicate with the outside air, and a cooling water supplied from the cooling water piping 39b, which is introduced from the first introduction port 24a and circulated inside. It also has an aspirator 24 that sucks the boiler water in the closed chamber 21 into the interior through the second introduction port 24b by the Venturi effect.

The aspirator 24 mixes the boiler water sucked through the second inlet 24b with the cooling water flowing through the inside to generate mixed water, and the mixed water is passed through the drain pipe 38 connected to the outlet 24c. (see FIG. 1) and is discharged (drained) to the drain port 104a of the drainage equipment 104 installed outside the drainage unit 20.

As shown in FIG. 2, the drainage unit 20 includes, for example, a partition plate 25A that divides the internal space of the housing 25 into an upper space 20a and a lower space 20b. For example, a closed chamber 21 and an atmosphere release valve 23 are arranged in the upper space 20a. For example, a negative pressure pump 22 and an aspirator 24 are arranged in the lower space 20b.

In addition, in this drainage unit 20, it is sufficient that at least the closed chamber 21 is disposed in the upper space 20a, and at least the aspirator 24 is disposed in the lower space 20b. Therefore, the negative pressure pump 22 and the atmosphere release valve 23 can be placed in either the upper space 20a or the lower space 20b. The aspirator 24 is arranged at a position away from the partition plate 25A, for example, so that the second inlet 24b faces the upper space 20a. Thereby, a predetermined straight (shortest) separation distance h is ensured between the closed chamber 21 and the second introduction port 24b.

As an example, the dimension of the separation distance h can be set as follows. In other words, if the width (horizontal dimension) of the housing 25 is 250 mm, the depth (vertical dimension) is 150 mm, and the height dimension is 270 mm, if the partition plate 25A is installed at a location 110 mm or more from the bottom, the separation distance will be reduced. h can be 110 mm. In this case, the closed chamber 21 may have a size of, for example, about 200 mm in width, 120 mm in depth, and 80 mm in height.

In the distilled water production apparatus 100 configured as described above, drainage is performed by the drainage unit 20 as follows. First, when distilled water is being produced in the distillation main unit 10, the negative pressure pump 22 is stopped, the atmosphere release valve 23 is opened, and the aspirator 24 is introduced from the first inlet port 24a through the cooling pipe 39b. Drainage is performed so that the cooling water supplied inside is constantly discharged from the drain port 24c.

Next, when production of distilled water is stopped in the distillation main body 10, the drain electromagnetic valve 33 is opened in the steam generator main body 31 of the steam generator 30, and at the same time, the atmospheric release valve 23 is closed and the negative pressure is The pump 22 is operated to draw boiler water into the sealed chamber 21, thereby delivering a predetermined amount of water. Note that at this time, the aspirator 24 is in a state where the cooling water is constantly flowing from the first inlet port 24a to the outlet port 24c, so the second inlet port 24b side prevents the fluid from flowing toward the closed chamber 21. This causes the aspirator 24 to function as a check valve.

When a predetermined amount of boiler water is stored inside the closed chamber 21, the negative pressure pump 22 is stopped, the drain electromagnetic valve 33 is closed, and the atmosphere release valve 23 is opened to start draining the boiler water. Ru. That is, by opening the atmosphere release valve 23, the boiler water in the closed chamber 21 is sucked into the second introduction port 24b of the aspirator 24 due to the Venturi effect and its own weight.

As a result, in the aspirator 24, the boiler water sucked in from the second introduction port 24b is mixed with the cooling water flowing from the first introduction port 24a to generate mixed water, and the generated mixed water is Drainage is performed by discharging to the outside from the drain port 24c. Note that the boiler water continues to be drained until the amount stored in the closed chamber 21 is drained.

As described above, the distilled water production apparatus 100 of the first embodiment has a structure in which the distillation main body part 10 and the drainage unit 20 can be arranged separately, so that the distillation water production apparatus 100 of the first embodiment has a structure in which the distillation main body part 10 and the drainage unit 20 can be arranged separately. Since the drainage unit 20 can be installed at a higher position than the position (for example, the position of the drainage solenoid valve 33) and can be freely installed in the space below the installation stand 105, it is possible to It is possible to reduce restrictions on installation and eliminate the need for construction of drainage equipment 104 and the like. This makes it possible to improve the degree of freedom in installing the device.

In addition, since there is no need to provide or use a drainage device consisting of a heat-resistant pump, a valve device, etc. for drainage in the distillation main body 10 or the drainage unit 20, various problems related to the drainage device can be solved. It is also possible to solve the problem. As described above, according to the distilled water production apparatus 100 of the first embodiment, construction of the drainage equipment 104 is not required, and problems when using a drainage equipment are also solved, and the degree of freedom in installing the equipment is improved. It becomes possible to do so.

Furthermore, the drainage unit 20 can be constructed by simply using the existing drainage pipe 39a and cooling water pipe 39b of the distillation main body 10 and connecting the drainage unit 20 to these pipes 39. It can be separated from the distillation main body 10 and installed at any location including a high place. Therefore, it becomes possible to promote effective use of installation space and space saving related to installation, including the use of existing distilled water production equipment.

In addition, in the above-mentioned drainage unit 20, for example, the design dimensional parameters of each part constituting the aspirator 24 (values such as fluid density, cross-sectional area of the pipe before and after throttling, pressure, flow velocity, water head, etc.) are kept constant. In this case, it is possible to adjust the suction amount of boiler water and the drainage temperature of the mixed water as appropriate depending on the separation distance h between the second inlet 24b of the aspirator 24 and the closed chamber 21 and the flow rate of the cooling water. .

That is, as an example, the present applicant has determined that for the separation distance h, which is the height difference between the chamber and the drain port (the height difference between the position of the sealed chamber 21 and the second inlet port 24b), and the flow rate of the cooling water, An experiment was conducted to verify the aspirator 24 regarding the drain time required to drain a predetermined amount (0.8 L as an example) of boiler water. In this verification experiment, the flow rate (L/min) of the cooling water and the separation distance h (mm) were changed as appropriate, and the drainage time of a predetermined amount of boiler water and the drainage temperature of the mixed water were measured. Note that the temperature of the cooling water before being introduced into the aspirator 24 was 24°C, and the temperature of the boiler water was 64.3°C. The measured drainage time and drainage temperature were as shown in FIG. 4. Note that the time description in FIG. 4 indicates the drainage time, and the temperature description in parentheses indicates the drainage temperature.

According to this, in both cases when the cooling water flow rate is 0.8 L/min and 2.0 L/min, the height difference (separation distance h) is 0 mm, 50 mm, 100 mm, 150 mm, and 200 mm. , and 600 mm, the draining time for a predetermined amount of boiler water becomes shorter. Further, it was found that the temperature of the waste water significantly decreased to below 36° C. regardless of the flow rate of the cooling water and the separation distance h. Therefore, it can be said that the larger (longer) the height difference (separation distance h) and the faster the flow rate of the cooling water, the shorter the drainage time can be.

[Second embodiment]
Next, a distilled water production apparatus 100A according to a second embodiment will be described. In addition, in the description of the second embodiment and subsequent embodiments, the same reference numerals are given to the same components as those of the first embodiment and its modified examples, so the redundant description will be omitted below. FIG. 5 is an explanatory diagram schematically showing the overall internal configuration of a distilled water production apparatus 100A according to the second embodiment of the present invention.

As shown in FIG. 5, a distilled water production apparatus 100A according to the second embodiment has a different configuration except for a sealed chamber 21, an atmosphere release valve 23, and an aspirator 24 in a drainage unit 20A, and a distilled water production apparatus 100A according to the second embodiment. The distillation according to the first embodiment is characterized in that a check valve 47 as a second check valve is provided between the main body part 10A (here, provided in the distillation main body part 10A). This is different from the water production device 100. Note that the check valve 47 also functions as a check valve when draining the initial water F discharged via the initial water drainage electromagnetic valve 58.

That is, the drainage unit 20A includes, instead of the negative pressure pump 22, a first pressurizing pump 25 that applies pressure to the internal space of the sealed chamber 21, which is connected to the sealed chamber 21 via the check valve 25a. ing. In this configuration, cooling water is always discharged through the aspirator 24, but the boiler water is introduced into the closed chamber 21 using a drainage solenoid valve instead of vacuuming. It differs from the drainage unit 20 in that the drainage is carried out by falling under its own weight when the air release valve 23 and the air release valve 23 are opened. For this reason, it is difficult for this drainage unit 20A to be installed at a high place as described above, but it is still possible to arrange it separately from the distillation main body 10A.

In addition, the aspirator 24 does not mix the boiler water in the closed chamber 21 with the cooling water by suction due to its own venturi effect, but by using the pressure of the first pressurizing pump 25 after closing the atmospheric release valve 33. The specifications have been changed so that the boiler water that is pressure-fed (liquid-fed) from inside the sealed chamber 21 is taken in from the second introduction port 24b and mixed.

In this case, the check valve 47 prevents the boiler water in the closed chamber 21 from being sent back to the steam generating section main body 31 side. Further, since the check valve 47 only needs to be able to cope with the fall of the boiler water by its own weight, a valve having a minimum valve opening pressure of about 1.0 kPa can be used, for example. In this way, the aspirator 24 in the drainage unit 20A simply functions as a check valve rather than exhibiting a venturi effect function.

According to the distilled water production apparatus 100A having such a configuration, there are somewhat more restrictions regarding installation than the distilled water production apparatus 100 of the first embodiment, but it is still possible to separate the distillation main body 10A and the drainage unit 20A. Therefore, it is possible to achieve the same effects as those described above except for the installation at a high place.

[Modification of second embodiment]
Next, a distilled water production apparatus 100B according to a modification of the second embodiment will be described. FIG. 6 is an explanatory diagram schematically showing the overall internal configuration of a distilled water production apparatus 100B according to a modification of the second embodiment of the present invention.

As shown in FIG. 6, in a distilled water production apparatus 100B according to a modification of the second embodiment, a trigeminal tube 26 is arranged in place of the aspirator 24 in the drainage unit 20B, and the trigeminal tube 26 and the closed chamber 21 are connected to each other. This is different from the drainage unit 20A of the second embodiment in that a first check valve 27 is disposed between the drainage units 20A and 20A.

In this configuration, regarding the drainage of boiler water, there is no change in the fact that the cooling water is always discharged through the trifurcated pipe 26, but in this trifurcated pipe 26, the cooling water is introduced from the first inlet 26a and This boiler water is mixed with cooling water by being mixed with boiler water that has been pressure-fed from the inside of the closed chamber 21 through the second inlet 26b by the pressure pump 25 of No. 1.

Then, the generated mixed water is discharged to the outside through the discharge port 26c. The first check valve 27 prevents boiler water, which is sent from the sealed chamber 21 into the trifurcated pipe 26 through the second inlet 26b, from flowing backward into the sealed chamber 21 and cooling from the first inlet 26a. Provided to prevent water from entering. The distilled water production device 100B of this modification can also achieve the same effects as the distilled water production device 100A of the second embodiment.

[Third embodiment]
Next, a distilled water production apparatus 100C according to a third embodiment will be described. FIG. 7 is an explanatory diagram schematically showing the overall internal configuration of a distilled water production apparatus 100C according to the third embodiment of the present invention.

As shown in FIG. 7, the distilled water production apparatus 100C according to the third embodiment applies pressure to the internal space of the steam generation section body 31 of the steam generation section 30, compared to the distillation body section 10A of the second embodiment. The distillation main body 10B is constructed by disposing the second pressurizing pump 34 via the check valve 34a, the atmosphere release valve 43 connected to the gas discharge hole 56, and the electromagnetic The difference from the distilled water production apparatus 100A according to the second embodiment is that a valve 60 is provided.

In this configuration, regarding the drainage of boiler water, cooling water is always discharged through the aspirator 24, but the method of introducing boiler water into the closed chamber 21 is to use the drainage solenoid valve 33 and release to the atmosphere. The difference from the second embodiment is that this is performed using the pressure of the second pressurizing pump 34 after opening the valve 23 and the atmosphere release valve 43 and closing the solenoid valve 60.

Therefore, in this distilled water production apparatus 100C, the drainage unit 20A is disposed at a position higher than the drainage position of the steam generating section 30, as in the first embodiment, in order to accommodate the high-altitude installation. Since it is possible to arrange the distillation main body section 10B separately, the configuration of the distillation main body section 10B increases somewhat, but the same effects as in the first embodiment can be achieved.

[Modification of third embodiment]
Next, a distilled water production apparatus 100D according to a modification of the third embodiment will be described. FIG. 8 is an explanatory diagram schematically showing the overall internal configuration of a distilled water production apparatus 100D according to a modification of the third embodiment of the present invention.

As shown in FIG. 8, a distilled water production apparatus 100D according to a modification of the third embodiment has a steam generating section main body 31 of a steam generating section 30, in contrast to a distillation main body section 10A according to a modification of the second embodiment. The distillation main body 10B is configured by disposing a second pressurizing pump 34 that applies pressure to the internal space via a check valve 34a, and the atmosphere release valve 43 connected to the gas discharge hole 56 is disposed. This differs from the distilled water production apparatus 100B according to the modification of the second embodiment in that a solenoid valve 60 is disposed in the pipe 59a. The distilled water production device 100D of this modification can also achieve the same effects as the distilled water production device 100C of the third embodiment.

[Fourth embodiment]
Next, a distilled water production apparatus 100E according to a fourth embodiment will be described. FIG. 9 is an explanatory diagram schematically showing the overall internal configuration of a distilled water production apparatus 100E according to the fourth embodiment of the present invention.

As shown in FIG. 9, a distilled water production apparatus 100E according to the fourth embodiment includes a closed chamber 21, an atmospheric release valve 23, a check valve 25a, and a first The drain unit 20C is different from the drain unit 20A of the third embodiment in that the pressure pump 25 is omitted to form the drain unit 20C.

According to the distilled water production apparatus 100E having such a configuration, the internal structure, particularly the internal structure of the drainage unit 20C, can be made simpler than the distilled water production apparatus 100C of the third embodiment, and the third The same effects as in the embodiment can be achieved.

[Modification of fourth embodiment]
Next, a distilled water production apparatus 100F according to a modification of the fourth embodiment will be described. FIG. 10 is an explanatory diagram schematically showing the overall internal configuration of a distilled water production apparatus 100F according to a modification of the fourth embodiment of the present invention.

As shown in FIG. 10, a distilled water production apparatus 100F according to a modification of the fourth embodiment includes a closed chamber 21, an atmosphere release valve 23, a check The drainage unit 20D is different from the drainage unit 20B of the modification of the third embodiment in that the valve 25a and the first pressurizing pump 25 are omitted to constitute the drainage unit 20D.

The distilled water production apparatus 100F of this modification can also achieve the same effects as the distilled water production apparatus 100E of the fourth embodiment. It goes without saying that in each of the above-described embodiments, the connecting parts of each component, the joint parts of piping, etc. are all sealed.

Although several embodiments of the present invention have been described above, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, substitutions, and changes can be made without departing from the gist of the invention. These embodiments and their modifications are included within the scope and gist of the invention, as well as within the scope of the invention described in the claims and its equivalents.

10, 10A, 10B Distillation body 20, 20A, 20B Drainage unit 21 Sealed chamber 22 Negative pressure pump 23, 43 Atmospheric release valve 24 Aspirator 25 First pressurizing pump 26 Trifurcated pipe 27, 46, 47 Check valve 30 Steam Generation part 31 Water vapor generation part main body 32 Heater 33 Drainage solenoid valve 39 Piping 40 Cooling part 41 Cooling pipe 42 Serpentine pipe 100 Distilled water production device

Claims (8)

a distillation main body having a steam generation section that stores and heats raw material water to generate steam; and a cooling section that cools the steam using cooling water to produce distilled water;
a drainage unit disposed so as to be spaced apart from the distillation main body and for discharging the raw material water stored in the steam generating section to the outside ;
The drainage unit is
a sealed chamber into which the raw material water stored in the steam generating section can be introduced;
a negative pressure pump that brings the internal space of the sealed chamber into a negative pressure state;
an atmosphere release valve that allows the internal space of the sealed chamber to communicate with the outside air;
an aspirator that causes the cooling water that has passed through the cooling unit to flow through it to suck the raw water from inside the closed chamber, mixes the raw water with the cooling water, and discharges the mixture.
A distilled water production device characterized by: The distilled water production apparatus according to claim 1 , wherein the drainage unit is configured to be arranged at a position higher than a drainage position of the steam generating section. The drainage unit has a partition plate that divides the internal space of the casing into an upper space and a lower space,
3. The closed chamber is arranged in the upper space, and at least the aspirator among the negative pressure pump, the atmosphere release valve, and the aspirator is arranged in the lower space. Distilled water production equipment. The aspirator has a first inlet for introducing the cooling water into the interior, a second inlet for sucking the raw water into the interior, and discharges mixed water that is a mixture of the raw water and the cooling water. Equipped with an outlet for
The drainage unit is configured to be able to adjust the suction amount of the raw water and the drainage temperature of the mixed water according to the separation distance between the second inlet and the closed chamber and the flow rate of the cooling water. The distilled water production apparatus according to claim 3 , characterized in that: a distillation main body having a steam generation section that stores and heats raw material water to generate steam; and a cooling section that cools the steam using cooling water to produce distilled water;
a drainage unit disposed so as to be spaced apart from the distillation main body and for discharging the raw material water stored in the steam generating section to the outside;
The drainage unit is
a sealed chamber into which the raw material water stored in the steam generating section can be introduced;
a first pressurizing pump that applies pressure to the internal space of the sealed chamber;
an atmosphere release valve that allows the internal space of the sealed chamber to communicate with the outside air;
and an aspirator that causes the cooling water that has passed through the cooling section to flow through and joins with the raw material water that has been pumped from inside the closed chamber, mixes the raw water with the cooling water, and discharges the mixture. Features of distilled water production equipment. a distillation main body having a steam generation section that stores and heats raw material water to generate steam; and a cooling section that cools the steam using cooling water to produce distilled water;
a drainage unit disposed so as to be spaced apart from the distillation main body and for discharging the raw material water stored in the steam generating section to the outside;
The drainage unit is
a sealed chamber into which the raw material water stored in the steam generating section can be introduced;
a first pressurizing pump that applies pressure to the internal space of the sealed chamber;
an atmosphere release valve that allows the internal space of the sealed chamber to communicate with the outside air;
a three-pronged pipe that introduces the cooling water that has passed through the cooling section, merges it with the raw material water that has been pumped from inside the closed chamber, mixes the raw water with the cooling water, and discharges the mixture;
A distilled water production apparatus comprising: a first check valve installed between the sealed chamber and the trifurcated pipe. The distillation main body includes a second pressurizing pump that applies pressure to the internal space of the steam generating unit,
The distilled water production apparatus according to claim 5 or 6 , wherein the drainage unit is configured to be able to be placed at a position higher than a drainage position of the steam generating section. The distilled water production apparatus according to any one of claims 5 to 7 , further comprising a second check valve installed between the distillation main body and the drainage unit.

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