JP2825070B2 - Pump installation structure for liquid storage container - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid storage container, and more particularly, to a side surface of a casing containing an impeller which rotates around a horizontal axis for sending out a liquid content and sending or circulating water to the outside or another container. The present invention relates to a liquid storage container using a centrifugal pump having a suction port at the center and a tangentially oriented discharge port at an outer peripheral portion.

[0002]

2. Description of the Related Art A storage container of this kind is a so-called water purifier for storing water by improving the quality of water by circulating the liquid or purifying water while circulating the liquid, or keeping the liquid by boiling the liquid. Type or water quality improvement type water heater, or various types of hot water storage tanks, in which the whole or a part of the water is transferred to the water storage tank to cool and store water while boiling and keeping the liquid in the hot water storage tank The centrifugal pump as described above is used to discharge the content liquid to the outside, or to feed or circulate the content liquid to another container as necessary.

As shown in FIG. 14, a centrifugal pump a is installed at a position lower than the bottom of a container b for sending out a liquid content, in order to discharge or circulate or circulate the liquid content. When the liquid in the container naturally flows in and is filled, this becomes so-called priming water and the centrifugal pump a
The impeller c is driven to rotate, and at the same time, while discharging the already-filled and filled content liquid, the content liquid is sucked in continuously from the container b and continuously sent out, and the above-described pouring, water supply, or circulation is performed. Can be achieved immediately at a sufficient flow rate.

The centrifugal pump a is provided with a discharge port d as shown in FIG. 14 for the purpose of facilitating the inflow of the content liquid from the container b and filling it, and the discharge of the filled content liquid as shown in FIG. It is installed so that it is located at the lower part of the car and is horizontal.

[0005]

However, from the research and various experiments conducted by the present inventors, the centrifugal pump a installed as described above sometimes has a delay in sending out the liquid content. There is. Considering this in various ways, it was found that the suction amount of the content liquid in the centrifugal pump a did not reach the discharge amount, and the cavitation phenomenon occurred, and the casing e
A large cavity f is formed at the upper part of the casing e, and even if the impeller c rotates, there is much play and this does not work effectively. , And it was found that the centrifugal pump a inhibited the pumping action.

[0006] When the content liquid is heated in such a cavity f, bubbles generated by heating the content liquid are introduced into the centrifugal pump a together with the content liquid, and the dissolved air is introduced into the centrifugal pump a. Bubbles and the like generated by the cavitation phenomenon when the centrifugal pump a is sucked and discharged by the centrifugal pump a by the impeller c have the same effect as the liquid is easily diverged by heating the liquid.

FIG. 15 shows the results of a discharge experiment performed on a conventional centrifugal pump a of a liquid storage container.
5 shows a rise characteristic of the motor load current proportional to the discharge flow rate of the motor with time. As can be seen from this, although the discharge flow rate gradually recovers, it takes a long time such as 2 minutes to reach the set flow rate.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, and to provide a liquid storage container capable of rotating and driving a centrifugal pump even with the presence of a cavity and at the same time stably sending out a liquid content. It is assumed that.

[0009]

In order to achieve the above-mentioned object, a liquid storage container according to the present invention has a horizontal axis for transmitting a content liquid and supplying water to an external or other container, or for circulating the liquid. intake casing accommodating the impeller to rotate about
In reservoir vessel using a centrifugal pump with write port and the discharge port, respectively, discharge opening is at the top of the casing, and
The centrifugal pump is located near the suction port and almost horizontally.
The pump is placed below the container that sends out the liquid contents .

[0010]

In the above-described structure of the liquid storage container of the present invention, the centrifugal pump is lower than the container that sends out the liquid content,
If the content liquid naturally flows in and is full, it is primed as in the past, and the impeller is driven to rotate.At the same time, the content liquid flows in and out of the container without interruption while sending out the full content liquid. In this way, it can be sent out instantaneously with a sufficient flow rate.

In particular, even if a cavity may be formed in the upper part of the casing in the centrifugal pump, the water in the casing is supplied with centrifugal force while rotating around the impeller at the same time as the impeller is driven to rotate. At the top of the casing and at the suction , most of the air in the cavity where the impeller does not work
Smoothly pushes out to a continuous horizontal discharge port located near the mouth and discharges it early, so that the hollow air remains in the casing for a long time and the rise of the centrifugal pump is deteriorated. Can be prevented.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention shown in FIGS. 1 to 5 will be described. The present embodiment shows a case of an electric pot that can be boiled and discharges a content liquid by an electric centrifugal pump. As shown in FIGS. 1 and 2, an inner case 2 made of a steel plate is accommodated in an outer case 3 made of a steel plate to constitute a container 4. The heater 1 is applied to the lower surface of the bottom of the inner container 2 to perform water heating and heat retention. A heat shield plate 7c is provided on the back of the heater 1, and is attached to the bottom of the inner container 2 by metal fittings 7d and screws 7e.

The inner container 2 receives an upper end flange by a synthetic resin shoulder member 5 fitted to the upper end of the outer case 3. On the other hand, an annular bottom member 6 made of synthetic resin is applied to the lower end of the outer case 3, and a bottom cover 9 is applied to a central opening of the bottom member 6 from below.
And the bottom of the inner container 2 with a screw 7a and a connection fitting 7b.
The outer case 3, the inner container 2, and the shoulder member 5, the bottom member 6, and the bottom cover 9 are integrated with each other. A circuit box 8 is formed integrally with the bottom member 6. A rotating seat 11 is rotatably fitted and held on the outer periphery of the bottom cover 9. Thus, when the body 4 is stationary, the body 4 slides on the rotary seat 11 and is rotated.

A discharge pipe 12 for discharging a liquid content is connected to the bottom of the inner container 2. The pouring line 12 rises in the space between the inner container 2 and the outer case 3 into the beak-shaped protrusion 13 provided at the front of the shoulder member 5 and is bent in an inverted U-shape at this portion. Thus, the discharge port 14 opens downward. A centrifugal pump 15 for feeding the content liquid flowing into the pouring line 12 to the discharge port 14 is provided in a portion of the pouring line 12 below the inner container 2, and is provided with a motor 10 shown in FIG. I try to drive. Reference numeral 12a denotes an outlet of the inner container 2 to the discharge pipe 12.

A liquid injection guide 17 is attached to a lower cover 16 attached to the front of the outer case 3 by fitting the lower part of the beak-shaped protrusion 13 to the lower side.
The content liquid discharged from the discharge port 14 is once opened to the atmosphere by a slit 14 a from the lower end of the discharge port 14 opening into the liquid injection guide 17, and then is turned around by the liquid injection guide 17. The liquid is guided so that it does not scatter.

A temperature sensor 21 is applied to the center of the lower surface of the bottom of the inner container 2 through a central hole of the heater 1 to detect the temperature of the liquid content and to transmit the content to a control circuit 22 housed in the circuit box 8. Gives liquid temperature information. Accordingly, the control circuit 22 controls the energization of the heater 1 so as to boil the content liquid or keep the temperature at a predetermined temperature, and determines the presence or absence of boiling of the content liquid and the temperature of the content liquid for these. The lower opening of the circuit box 8 is provided with a cover 82 made of a synthetic resin, so that even if there is intrusion water that may enter the bottom when the body is placed in the sink tank of the sink, this is controlled by the control circuit 22. Is prevented.

At the upper end of the container 4, a container lid 31 is provided. The body lid 31 is provided with a hinge pin 33 on a bearing portion 32 provided at a rear portion thereof so as to partially open inside the shoulder member 5.
It is pivotally mounted so that it can be opened and closed and attached and detached. The lid 31 can be attached and detached by opening the lid 31 so that the hinge pin 33 integrated with the lid 31 can be inserted and removed from the opening of the bearing portion 32. Therefore, it is possible to prevent the lid 31 from being accidentally detached when the lid 31 is in the closed state.

A lock member 34 is provided at the front end of the body lid 31. When the body lid 31 is closed, the lock member 34 is elastically engaged with a not-shown locking portion provided on a part of the shoulder member 5 so as to be elastic. The body lid 31 is locked in the closed state. This locking member 34 is opposed to the spring acted upon by
As a result, the engagement with the locking portion is released, and the locking of the body lid 31 to the closed position is released.

An inner cover 36 made of a metal plate is applied to the inside of the back plate 35 of the body cover 31 and is screwed. A seal packing 38 is mounted on the outer periphery of the inner lid 36, and this seal comes into contact with the rear part of the inner container 2 so as to close the inner container 2.

A steam passage 39 is provided between the inner cover 36 and the back plate 35 of the body cover 31 to release steam generated in the inner container 2 to the outside. Abnormal pressure increase is avoided.

In the middle of the steam passage 39, a falling water stop valve 41 for preventing the content liquid from flowing out through the steam passage 39 when the container 4 falls, and the content liquid is supplied to the steam passage 39 when the container 4 falls. Even if an attempt is made to flow out to the outside, the liquid is stored in the middle of the vapor passage 39, and liquid reservoirs 40a and 40b are provided to delay the outflow to the outside.

An operation panel 44 for operating the centrifugal pump 15 and setting various modes of the electric pot is provided on the upper surface of the beak-shaped projection 13 of the shoulder member 5. The operation panel 44 is provided inside the operation panel 44. Various switches on the operation board 45 are depressed, and the on / off state of various display units such as LEDs provided on the operation board 45 can be externally displayed.

The inverted U-shaped bent portion 12 of the discharge pipe 12
Immediately below b, a water stop valve 61 for overturning is provided.

As shown in FIGS. 2 and 4, the centrifugal pump 15 has a suction port 15d at the center of the side surface of a casing 15c accommodating an impeller 15b rotating around a horizontal axis 15a, and a discharge port tangentially directed to the outer periphery. 15e.

The centrifugal pump 15 has a discharge port 15e at the uppermost part of the casing 15c below the inner container 2 for feeding the liquid to be heated .
In this manner, it is positioned so as to be offset in the vicinity of the suction port 15d so as to be substantially horizontal.

As described above, the centrifugal pump 15 is located below the inner container 2 which sends out the content liquid to be heated, and when the content liquid naturally flows in and is full, the centrifugal pump 15 becomes the prime water as in the conventional case and becomes impeller. Simultaneously with the rotation of the rotary member 15b, the inflowing and full contents liquid is sent out, the contents liquid is sucked from the inner container 2, and the contents liquid can be continuously sent out.

In particular, even if air bubbles in the centrifugal pump 15 collect at the upper part of the casing 15c as shown in FIG. 3 to form the cavity 51, the water in the casing 15c is driven by the impeller 15b to rotate. At the same time, the centrifugal force is applied while rotating around this, and the impeller 15b tries to escape to the discharge port 15e, so that most of the air in the cavity 51 where the impeller 15b does not work effectively tends to remain in the upper part in the casing 15c. Is smoothly pushed out to the horizontal discharge port 15d continuous to the upper part of the casing 15c and is discharged early, so that the air in the cavity 51 remains in the casing 15c for a long time and the rise of the centrifugal pump 15 is deteriorated. Can be prevented.

In the present embodiment, the discharge port 15e is directed to the side, that is, in the horizontal direction. However, the present invention is not limited to this, and the discharge port 15e may be inclined as shown by the one-dot chain line and the two-dot chain line shown in FIG. .

FIG. 5A shows the rising state of the centrifugal pump 15 in the embodiment in which the discharge port 15e is oriented in a dashed line, and FIG. 6B shows the discharge port 15e in a two-dot chain line. The rising state of the centrifugal pump 15 in the case of the embodiment with the orientation is shown.

It is clear that this is far superior to the conventional example shown in FIG.

As shown in FIG. 4, the centrifugal pump 15 has an impeller 15b and a magnet 15g isolated from a pump chamber 15f in which the impeller 15b is sealed.
A rotary pump 10a of a motor 10 in which a synthetic resin coating 15i is provided on a magnet 15g and a metal backup plate 15h integrally holding the magnet 15g by a suction force of the electric motor. It is assumed that it was press-fitted and mounted. Also,
The impeller 15b incorporates a magnetic body 15j for receiving a driving force by the attraction force of the magnet 15g.

In this embodiment as well, a water purifying section 64 shown by a dashed line in FIG. 2 is installed in the inner vessel 2 forming a hot water storage area of the vessel 4, and a water purifying material such as activated carbon and a content liquid accommodated therein. By contacting in the state of immersion, a kind of water quality improvement which can obtain purified hot water content liquid can be obtained, and it is provided at the upper part of the pouring line 12 as shown by a two-dot chain line in FIG. A return path 66 is provided via a solenoid valve 65 for branching back into the inner container 2. A water purification section 64 is provided in a part of the return path 66. By repeatedly returning the content liquid sent out to the pipe 12 into the inner container 2 through the water purification section 64, the water purification process in the water purification section 64 can be repeated while circulating the content liquid. . Further, the water purification section 64 can be replaced with a water quality improvement section containing a water quality improvement material such as coral coral for mineralizing the content liquid or solubilizing carbonic acid or oxygen, or both can be used in combination. According to the water quality improving section, it is possible to recover the loss of the sharpness due to the loss of minerals, carbonic acid and oxygen due to the boiling of the content liquid.

The present invention is not limited to the electric pot type as in the present embodiment, but also includes various pipes for sending out the liquid to be heated in various liquid storage containers and sending or circulating the liquid to the outside or another container. It can be applied to centrifugal pumps in roads.

In the electric pot of the present embodiment, the content liquid in the inner container 2 is heated by the heater 1 to heat the water and keep the hot water, and the hot water is stored in the inner container 2 by the operation of the centrifugal pump 15. By pouring out of the case 4 through the connected pouring line 12 and being ready for use at any time, by providing another heat shield plate 81 on the circuit box 8,
The circuit box 8 and the heat shield plate 8 on the advanced control circuit 22 including various high-function, high-performance electronic circuits, etc.
1 protects from the heat of the heater 1 and from water leakage and dew condensation falling from above. In addition to this, the bottom heat shield plate 7c is located below the heater 1 on the lower surface of the bottom of the inner container 2, and has a heat shielding property and a heat insulating gap S1 formed between itself and the heat shield plate 81 to provide a circuit box. 8 can further improve the protection function of the control circuit 22.

The circuit box 8 is mounted on the upper surface of the circuit box 8 with screws 82 through a plurality of spacer projections 8a formed integrally therewith. Thereby, a predetermined gap S2 is formed between the circuit box 8 and the spacer projection 8a to obtain a heat insulating space, and the thermal protection of the control circuit 22 by the circuit box 8 and the heat shield plate 81 can be further improved. .

A circuit board 22a equipped with a control circuit 22 is applied to the inside of the circuit box 8 via a plurality of spacer projections 8d formed integrally with the ceiling wall 8b downward, and an insulating gap S3 is formed between the two. The protection function of the control circuit 22 by the formed heat shield plate 81 and the like can be further enhanced.

The second embodiment of the present invention shown in FIGS. 6 to 13 shows a case of a liquid storage container which can improve the quality of water and can purify and discharge water. 6 to 8, 12, and 1
3, an inner container 101 for storing water, a water quality improver 103 containing an improving material 102 for improving the quality of water,
A water purifier 104 containing a filtering material 11 for filtering water is provided in a vessel 105, and water in the inner vessel 101 is supplied to the water quality improvement device 103 by the first centrifugal pump 106, and the water passed through the water quality improvement device 103. The water in the inner container 101 is supplied to the water purifier 104 by the second centrifugal pump 108, and the water discharged from the water purifier 104 is discharged through the outlet 109c. Body 105
And a purified water discharge passage 109 to be sent out. Then, the inner container 101, the water quality improvement chamber 122 accommodating the water quality improvement device 103 so as to be detachable, and the water purification chamber 123 accommodating the water purifier 104 so as to be attachable / detachable are partitioned from each other, It is provided so as to be individually opened on the upper surface. Each of the centrifugal pumps 106 and 108 has the same structure and installation state as the centrifugal pump 15 described in the first embodiment, and can prevent the delay of discharge due to the cavity. In the case of cold water, the discharge delay due to the cavities is larger than that of hot water, so that it is particularly effective.
106d and 108d are suction ports of the centrifugal pumps 106 and 108, and 106e and 108e are discharge ports.

Further, a waterfall means 101 for bringing the circulating water into contact with air is provided at at least one position in the water circulation path using the water quality improvement circulation path 107. As shown in FIGS. 1 and 3, the waterfall means 101 of the present embodiment is provided with a return port 107 c of a return pipe 107 b for returning water from the water quality improvement device 103 of the water quality improvement circuit 107 to the inner container 101, and an inner container 10.
1 is opened in a normal space 100 formed in the upper part of the inside 1.

Further, the water quality improvement device 103 of the present embodiment converts water passed through the device into a mineral by eluting a mineral component.

Although the water quality improvement device 103 is located outside the inner container 101, the water in the inner device 101 is made to act as a water quality improvement material in the water quality improvement device 103 by operating the water quality improvement circulation circuit 107 by the first centrifugal pump 106. Since the water is circulated so as to repeatedly pass through the inner container 102, the entire amount of water in the inner container 101 can be stored in the inner container 101 by improving the water quality, and in this embodiment, converting the amount of water into mineral. At the same time, the water circulated to improve the water quality repeatedly passes through the waterfall means 201 provided in the middle of the circulation path of the circulation, so that the water is repeatedly brought into contact with the air to be waterfall. As a result, the mellowness is increased like water of a clear stream such as a mountain. On the other hand, the water purifier 104 is also located outside the inner container 101, but the second centrifugal pump 108 operates the purified water discharge passage 109 to store water in the inner container 101, improve the water quality, and remove the mineralized water from the outer container 105. When the water is poured into the inner container 101, the water quality improvement water in the inner container 101 is supplied to the water purifier 104, passes through the filter material 11, and is then discharged to the outside of the container 105. The mineralized water obtained by the improvement can be poured out and used as clean water from which fine particles, calcium components, and other foreign substances of the water quality improving material 102 have been removed.

In particular, a water quality improvement chamber 122 for accommodating the water quality improvement device 103 so as to be detachable and a water purification chamber 123 for accommodating the water purification device 104 so as to be attachable and detachable are provided in the container 105 together with the inner container 101 as described above. , Which are convenient for use as being treated as a unitary product, and which are separated from each other in the body 105 and individually opened on the upper surface of the body 105, so that the water quality improvement device 103 and the water purifier 1
04 is removed, and the water stored in the inner container 101 is removed from the water quality improvement chamber 122 or the water purification chamber 1 by removing the water quality improvement device 103 or the water purifier 104 due to the difference in water level.
23, the connection ports 122a and 123
a) Even if the water naturally flows through 123b, it stops when the water level reaches the same level, and prevents the water from leaking into the body 105 or overflowing outside the body 105. In the water quality improvement chamber 122 and the water purification chamber 123 from which the water quality improvement device 103 and the water purification device 104 have been removed by the circulation operation and the pouring operation, the inner container is connected through the connection port 122a and the connection ports 123a and 123b. Even if the water in 101 is sent in,
This can be prevented from leaking into the container 105, and the water quality improvement chamber 122 and the water purification chamber 123 from which the water quality improvement device 103 and the water purifier 104 have been removed due to the capacity difference.
It takes a considerable amount of time before the user overflows out of the body 105, and the user notices that the state corresponding to the operation cannot be obtained in the meantime, Even if it overflows out of the container 105, the user performing the operation can immediately notice this and deal with it, so that there is no particular problem.

More specifically, as shown in FIGS. 1 and 2, the container body 105 is made of a synthetic resin and has a container-type body 1.
14 and a synthetic resin shoulder member 130 fitted into the upper end opening of the main body 114. Body 11
The bottom of 4 is formed so that a bottom cover 115 made of synthetic resin can be attached to and detached from a bottom 114a formed one size smaller than the other. As shown in FIG. 4, the bottom cover 115 is provided with an integrally formed leg 115a. The leg 115a may be omitted, or the bottom cover 115 may be omitted and the leg 115a may be formed integrally with the bottom of the main body 114. However, the leg 115a can be a separate member from the bottom cover 115 and the main body 114. The shoulder member 130 has a fitting opening 21 for the inner container 101 having the opening 17, a water quality improving device 103, and a water purifier 104.
The water quality improvement chamber 122 and the water purification chamber 123 for accommodating the water are integrally formed.

The inner container 101 is made of a metal such as stainless steel or aluminum. As shown in FIG. 4, an outward flange 101a at the upper end is sealed on an inward flange 121a integrally formed at the lower end of the mounting opening 21. Packing 12
It is received from below via 4a, and is integrated with the inner container 101 together with the shoulder member 130 by connection with screws 118 and 119 via a connection fitting 116 to the bottom of the main body 114.

As shown in FIG. 3, the water quality improver 103 is a cylindrical body made of synthetic resin, and has a cylindrical inlet 125a for introducing water at the center of the lower end, and water with improved water quality at the center of the upper end. The water quality improving cartridge 125 is formed with a cylindrical discharge port 125b for discharging.
Return pipe 107 having the return port 107c at 25b
b is fitted and adhesively fixed. Since the bonded and fixed bag pipe 107b has an L-shape bent at a right angle from the delivery port 125b, it can be used as a convenient handle when the water quality improvement cartridge 125 is detached or handled alone. it can. At the bottom of the water quality improvement chamber 122, a connection port 122a is formed to fit the introduction port 125a from above and detachably connect to the outward path 107a side of the circulation path 107. The water quality improvement cartridge 125 is housed in the water quality improvement
07a, the return path 107b extends straight from the position extending upward from the upper opening 22 of the water quality improvement chamber 122 to the center of the opening 17 of the inner container 101, as shown in FIGS. The return opening 107c is located at the center of the opening 17 of the inner container 101, and in the present embodiment, is opened upward. Synthetic resin lid 27 removably fitted into fitting opening 121 of shoulder member 130
A transparent plate 28 made of synthetic resin and having a position corresponding to the opening 117 of the inner container 101 and having a slightly dome shape and projecting upward is attached. From the inner container 101 by catching the water returned so as to blow upward from the container and allowing the water to flow naturally into the inner container 101 while spreading around.
The efficiency of contact with the air in the upper space in 01, that is, the efficiency of the waterfall is increased, and this state can be visually recognized from the outside. Therefore, the user can easily feel that the water quality is being improved.

As shown in FIGS. 3 and 5, the water quality improving cartridge 125 contains, as the water quality improving material 102, antibacterial activated carbon 125e, silver impregnated treatment, etc., fir 25f, barley rice 125g, fir 125h, coral stone 125j. The cage 125k and other necessary processing materials, for example, 125m of purified water activated carbon and 125n and 125o of the cage, are sequentially accommodated, and in addition to mineralization, antibacterial treatment and temporary purification of chalky are performed.

However, in the case where the boiling liquid is put into the inner container 101, or a boiling water container is also provided in the container 105, and the boiling liquid is supplied from here to cool and store it. When coral sand is used as the water quality improving material 102, since carbonic acid is contained in the coral sand, it is possible to recover that the content liquid loses carbon dioxide gas due to boiling and becomes indistinguishable. As the water recovers, mineralized and delicious water is obtained.

The first centrifugal pump 106 is provided in the middle of the outward path 107a as shown in FIGS.
Through the water quality improvement cartridge 125 attached to the water quality improvement device 103, and sequentially passes through the antibacterial activated carbon 125e, the barley stone 125g, the coral stone 125j, and the purified water active end 125m, and in addition to the antibacterial and purified water treatment, After being eluted, the water is repeatedly returned to the inner container 101 and circulated, so that the water in the inner container 101 can be uniformly mineralized.

In this embodiment, the water quality improvement device 103 converts the circulated water into mineral water by the water quality improvement material 102, which is a mineral component. It may be something.

As shown in FIG. 3, the water quality improving cartridge 125 has a rounded portion 12 at the outer periphery at the lower end and at the outer periphery at the upper end.
A corner is not formed as 5r, so that the water quality improving cartridge 125 is formed at a corner which is likely to be formed at the outer peripheral portion at the lower end or the outer peripheral portion at the upper end of the water quality improving cartridge 125.
It is possible to prevent the water that has entered inside from staying and not flowing, and the germs growing over a long period of time and becoming unsanitary.

The water quality improvement material 102 can be replaced easily and quickly by attaching and detaching the water quality improvement cartridge 125 to and from the water quality improvement chamber 122 which handles the water quality improvement cartridge 125 as a single unit. It is convenient.
If the water quality improvement cartridge 125 is not disposable,
It is preferable that the water quality improving material 102 be replaced by a structure that can be separated. Water quality improvement cartridge 12
5 to be attached to and detached from the water quality improvement chamber 122,
Picking space 2 with the upper part of 22 extended more downward than below
2b, the user puts his / her finger into this portion, and picks up the water quality improvement cartridge 125 in the water quality improvement chamber 122 with his / her hand to make it easy to remove. In addition, it becomes easy to insert and mount the water quality improvement cartridge 125 into the water quality improvement chamber 122 by the reverse operation.

The water purifier 104 is, as shown in FIGS.
A main body 127 having a bottom shape made of synthetic resin;
27 and a synthetic resin lid 128 fitted to the upper end opening of the cover 27. The main body 127 has a water purification module 131 in which a hollow fiber membrane 104a serving as a filtering agent 11 is provided in a cylindrical water purification module body 131a made of synthetic resin, and a concave portion at the bottom eccentric to one of the bottoms of the main body 127. 1
27a is detachably fitted inside 27a. The activated carbon chamber 12 which is the remaining space around the water purification module 131
7b contains a purified water activated carbon 132 as another filtering agent 111. 125 m of purified water activated carbon in the water quality improvement cartridge 125 is used to remove chlorine to the extent that bacteria of water do not grow in the stored water, for example, to about 0.3 ppm. 132 is a standard residual chlorine value required for tap water, for example, 0.1, when residual water with improved water quality is poured out.
Used to remove to about 0.2 ppm. Thus, while suppressing the growth of various germs while the water is being stored, the residual chlorine at the level of tap water can be suppressed at the outlet 109c to minimize the influence of the odor. Also, the hollow fiber membrane 104a has a size of, for example, a 0.1 micron level of filtration so that the final filtration extends to the removal of harmful bacteria such as Escherichia coli. This prevents the yarn film 104a from being clogged early and shortening the life.

In the water purifier 104, a cylindrical inlet 104b communicating with the activated carbon chamber 131b and a cylindrical outlet 104c communicating with the water purification module 131 are integrally formed at the bottom of the main body 127. Correspondingly, the inlet 104b and the outlet 104c are fitted into the bottom of the water purification chamber 123 as shown in FIG. Connection ports 122a, 1a detachably connected to the unit side pipe 109b.
23b are formed. Thereby, the inlet 104b
When the outlet 4c and the outlet 4c are fitted to the connection ports 122a and 123b, the purified water outlet 109 is connected via the water purifier 104. A second centrifugal pump 108 is provided in the middle of the base side pipe 109a as shown in FIG.
The water mineralized by the water quality improvement in the inner container 101 first passes through the purified water activated carbon 132 in the activated carbon chamber 127a of the water purifier 104, and finally the remaining calcium component is removed.
By entering the water purification module 131 via the path 127c inside the lid 128 and passing through the myriad of hollow fiber membranes 104a, harmful bacteria and red water components that cannot be removed with activated carbon are finally removed. The water is discharged to the outside through a beak-shaped protruding portion 105a provided at an upper part on the front side of the container 105, to a pouring port 109c of a purified water pouring path 109 protruding downward, and used for use.

To replace the filter material 111, the water purifier 10
4 can be easily and quickly carried out by attaching and detaching to and from the water purification chamber 123, and it is also convenient for disposal of used products. In this embodiment, the water purifier 104 is not disposable, and it is preferable to remove the water purifier 104 and remove the lid 128 to replace the water purification module 131 and the water purification activated carbon 132. In addition, in order to attach and detach the water purifier 104 to and from the water purifying chamber 123, an upper portion of the water purifying chamber 123 is formed as a knob space 123c which is extended from the lower side to the periphery.
The water purifier 104 inside 23 is pinched so that it can be easily removed. The water purifier 104 is moved to the water purification room 1 by the reverse operation.
23 can be easily mounted. In this embodiment, a portion of the water purifier 104 that protrudes into the knob space 123c is provided with a lid cover 126 that covers the knob space 123c. The lid cover 126 is seated on the upward step 123d formed by the knob space 123c, and is positioned upward. It fits into a convex wall 123e formed on the inner periphery of 123d, and is configured to be detachably positioned. Knob 1 on the lid cover 126
26a are integrally formed.

FIG. 8 shows a water purification module 131 of this embodiment.
A hollow fiber membrane 104a having a U-shape is densely arranged in a water purification passage 131b for purifying water through water, with both ends of the hollow fiber membrane 104a facing the downstream side and the bending section upstream. Both ends of 104a are fixed to each other and to the passage wall in a sealed state by a sealing material in a state opened to the downstream side. In particular, the cross-sectional area of the passage on the upstream side from the fixing portion of the hollow fiber membrane 104a is The cross-sectional area of the installation area where both ends of the hollow fiber membrane 104a are provided at the fixing portion is made larger.

In the present embodiment, both of these cross-sectional areas are equal to the cross-sectional area enclosed by the inner surface of the water purification module 131, and the inner surface of the portion of the water purification module 131 where the hollow fiber membrane 104a is fixed and the inner surface on the upstream side from this. Are continuous through the tapered portion, but it is not particularly necessary to make such a continuous state. A seal material or other member is provided between the arrangement area of both ends of the hollow fiber membrane 104a and the inner surface of the water purification module 131. May be separated by a predetermined amount.

In the configuration of the water purification module 131 of this embodiment, water passes through the water purification passage 131b from the upstream side to the downstream side,
Many hollow fiber membranes 104a arranged in the water purification passage 131b
Most of the hollow fiber membranes 104a that are exposed to the upstream side from the fixed portions at both ends are permeated into the hollow fiber membranes 104a from the surfaces thereof and are filtered.
It flows out from both ends opened to the downstream side of, and is poured out and used for various uses.

In particular, the water purification passage 131b is provided for each hollow fiber membrane 10
The cross-sectional area of the passage on the upstream side from the fixing portion 4a is larger than the cross-sectional area of the arrangement region of the hollow fiber membranes 104a in the fixing portion, and the arrangement density of the hollow fiber membranes 104a in the fixing portion is the same as before, or When the number of hollow fiber membranes 104a is increased as much as possible, for example, to about 50 to 70%, and a large number of hollow fiber membranes 104a are used, the fixing portion of the water purification passage 131b that does not contribute to water purification becomes large or the hollow fiber The arrangement density of the hollow fiber membranes 104a in the passage portion for water purification is reduced to, for example, about 25% while preventing the need for a large amount of sealing material for fixing both ends of the membrane 104a in a sealed state. Lower it,
The water purification makes clogging between the hollow fiber membranes 104a less likely to occur, and the entire exposed portion of each of the hollow fiber membranes 104a on the upstream side can be used for water purification throughout, so that it is relatively small and has a long life. It is possible to reduce the frequency and time required for the replacement and the economical burden, and the flow resistance is small, so that a stable flow rate can be guaranteed for a long period of time. Therefore, use of the water quality improvement water storage container becomes convenient.

As shown in FIGS. 6, 7 and 12, the water quality improving cartridge 125 and the water purifier 104 are provided with the beak-shaped protrusion 105a and the spout 109 of the body 105.
It is located on the front side of the body 105 where c is located. Thereby, when the pouring is stopped, the water purifier 1 of the water purifying passage 109 is
Water remaining on the side of the outlet 109c from 04 is sent out by the next pouring. However, in this case, the water purifier 104
It does not pass through and remains filtered during the previous pour. In this embodiment, since the water purifier 104 is located on the front side of the container body 105 and close to the outlet 109c, the passage portion in which the water at the time of pouring remains can be shortened. The amount of water remaining in the portion can be minimized.

Each water quality improvement chamber 122, 12 of the shoulder member 130
7 and 9, a step edge 120 common to both sides is formed adjacent to the fitting opening 121 of the inner container 101, and the water quality improving chamber 12
A lid 140 made of synthetic resin common to 2 and 123 is detachably fitted.

Further, the water quality improvement room 122 and the water purification room 1
The lid 140 covering the 23 openings is transparent. As a result, the water quality improvement device 10
Even if the water in the inner container 101 overflows into the water quality improvement chamber 122 or the water purification chamber 123 from which the water purifier 3 and the water purifier 104 have been removed, the operator can easily notice this and take immediate action. can do.

As shown in FIG. 11, an inlet 201b and an outlet 201c, which are attachment / detachment portions to and from the water purification chamber 123, are common to the inlet 104b and the outlet 104c of the water purifier 104,
A washing cartridge 201 is provided in combination with a cleaning passage 201 that connects the inner container 101 side and the outlet 109c side of the purified water outlet 109 with the purifier 104 when the water purifying chamber 123 is attached to the connection ports 123a and 123b. I have. Accordingly, when the inner container 101 and the purified water outlet 109 are to be washed with the cleaning liquid, the water purifier 104 located in the middle of the purified water outlet 109 is replaced with the cleaning cartridge 20.
By replacing the inner container 101 with the inner container 1, a cleaning liquid is poured into the inner container 101 to perform cleaning, and thereafter, the inner container 1 is subjected to a pouring operation.
01 can be washed out of the purified water outlet 109 by pouring out the cleaning solution inside the water outlet 109, and the cleaning solution passes through the water purifier 104 and is contaminated by such washing. Can be prevented,
In order to prevent such contamination of the water purifier 104, the above-described cleaning is performed while the water purifier 104 is removed, so that the inconvenience of the cleaning liquid overflowing through the water purification chamber 123 can also be avoided. The cleaning cartridge 201 is provided only in the outer shell portion of the water purifier 104 in which the filtering agent 11 is not stored, so that no special parts need to be manufactured. However, it can also be a special part.

An operation panel 142 is provided on the upper surface of the beak-shaped projection 5a as shown in FIGS. 6, 9 and 12, and the operation panel 142 has a water quality improvement operation start key as shown in FIGS. 143, a pouring / pouring stop key 144, a reset key 145, a power-on display 146, a cartridge cleaning display 147, a water quality improvement water generating display 148, a ready display 149, and the like.
An operation board 151 on which electric components and electronic components for controlling these operations and display are mounted is provided on the back surface of 42.

As shown in FIG. 9, the electric equipment such as the first and second centrifugal pumps 106 and 108 is housed in an electric box 141 composed of a container-shaped main body 141a in a prone state and a lid 141b fitted to the main body. The main body 101
It is installed inside the bottom of the car to protect it from water. Further, it is convenient to assemble or repair the electric equipment to be accommodated, for example, by attaching it to the main body 141a side and handling it integrally including wiring between them.

The pipe 109a on the base side of the purified water discharge channel 109
A liquid amount display tube 146 made of a transparent resin or glass rising from the side of the inner container 101 is connected as shown in FIG. 4 and 7, a liquid level display window 147 as shown in FIG. The connection portion of the liquid amount display tube 146 with the base side pipe 109a is a portion on the suction side of the second side centrifugal pump 108 of the base side pipe 109a. Is repeatedly poured out to the front end side pipe 109b in such a manner as to scrape out the liquid, and since the suction action does not reach the liquid amount display tube 146, the water in the inner container 101 is used to improve the water quality. Therefore, regardless of whether the water is circulated or discharged, the same liquid level as the water in the inner container 101 is always maintained, and the amount of water stored in the inner container 101 can be checked.
Therefore, it is possible to confirm how much water is reduced when the water in the inner container 101 is poured out.

The upper end of the liquid amount display tube 146 may be simply opened to the outside air in order to maintain the same liquid level as the inside of the inner container 101. However, in consideration of the outflow of water when the container 105 falls down. It is preferable to connect to the upper part of the inner container 101 as in this embodiment.

The liquid amount display window 147 has a transparent cover portion 147a formed on the liquid amount display window 147, which is slightly larger than the diameter of the liquid amount display tube 146, and protrudes from the side of the body 105 as shown in FIG. By disposing the liquid amount display tube 146 in the protruding portion, the state of the liquid amount displayed by the tube can be easily visually recognized from the front side of the container 105. Therefore, even if the liquid amount display window 147 is provided on the side surface of the container 105, the liquid amount display window 147 can be easily seen by a user who frequently uses the liquid supply from the front side.

On both sides of the shoulder member 130, both ends of a synthetic resin hand-held handle 151 are pivotally supported by a shaft 51a so as to be able to undulate as shown in FIGS.
Handle handle 130b formed integrally with the mouth of
51 can be received sideways.

When the bottom cover 115 covering the bottom 114a of the main body 114 of the container 105 is removed and used as a stand for the container 105 as shown by a phantom line in FIG. 6, the height of the container 105 can be increased. , Tall PET bottle 15
In the case of No. 2 or the like, the discharge water can be directly poured from the discharge port 109c. Therefore, the body 10
5 can be made as small as possible, and furthermore, the advantage that the pouring water can be poured directly into the PET bottle 152 can be provided. In addition, when the bottom cover 115 is unnecessary, the bottom cover 115 is placed on the bottom portion 114a of the main body 114 so that the bottom cover 115 is not bulky. In this embodiment, a water quality improvement device 103 and a water purifier 104
Are arranged side by side, the shape of the front part of the container 105 is changed to a water quality improvement device 103 and a water purifier 104 having a circular cross section.
6 and 13 are formed from the bottom of the container 105 to the spout 109c, so as to extend substantially along the cylindrical surface of FIG.
Is an escape on the front surface of the container body 105 with respect to the PET bottle 152, and the PET bottle 152 can be placed at a position suitable for pouring out water directly from the spout 109c.

[0069]

According to the liquid storage container of the present invention, if the content liquid naturally flows in and is full below the container from which the centrifugal pump sends out the content liquid, this becomes the prime water as in the conventional case. At the same time as the impeller is driven to rotate, the content liquid is sucked in from the container without interruption while sending out the filled content liquid, and can be sent out at a sufficient flow rate instantaneously.

In particular, even when a cavity may be formed in the upper part of the casing in the centrifugal pump, the water in the casing is discharged by applying centrifugal force while rotating the impeller while rotating the impeller. trying Nukedeyo to the outlet, that the majority of air cavities portion impeller does not work effectively tries Nokoro the top of the casing at the top of the casing,
And it is located near the suction port and pushed out smoothly to the continuous horizontal discharge port and discharges early,
It is possible to prevent the air forming the cavity from remaining in the casing for a long time so that the rise of the centrifugal pump is not deteriorated.

[Brief description of the drawings]

FIG. 1 is a sectional view of an upper half of an electric pot showing one embodiment of the present invention.

FIG. 2 is a sectional view of a lower half of the electric pot of FIG. 1;

FIG. 3 is a longitudinal sectional view of a centrifugal pump used for the electric pot of FIG. 1;

FIG. 4 is a sectional view showing an installation structure of a centrifugal pump employed in the electric pot of FIG.

FIG. 5 is a graph showing rise characteristics of a centrifugal pump used in the electric pot of FIG. 1;

FIG. 6 is an external perspective view of a water quality improvement water storage container according to a second embodiment of the present invention.

FIG. 7 is a perspective view showing the internal structure of the water quality improvement water storage container of FIG. 6;

FIG. 8 is a perspective view of a cross section of a water quality improving portion and a water purifier portion of the water quality improving water storage container of FIG. 6;

9 is a cross-sectional view including a water purifier part of the water quality improvement water storage container of FIG. 6;

FIG. 10 is a cross-sectional view including a water quality improvement device portion of the water quality improvement water storage container of FIG. 6;

FIG. 11 is a sectional view of a cleaning cartridge provided in combination with the water quality improving water storage container of FIG. 6;

FIG. 12 is a plan view of the water quality improvement water storage container of FIG. 6;

FIG. 13 is a bottom view of the water quality improvement water storage container of FIG. 6 except for a bottom portion.

FIG. 14 is a sectional view showing an installation structure of a conventional centrifugal pump.

FIG. 15 is a graph showing rise characteristics of the centrifugal pump of FIG. 6;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Heater 2 Inner container 12 Outlet line 15, 106, 108 Centrifugal pump 15a Horizontal axis 15b Impeller 15c Casing 15d, 106d, 108d Suction port 15e, 106e, 108e Discharge port

Claims (1)

(57) [Claims] 1. A casing containing an impeller that rotates around a horizontal axis is provided with a suction port and a discharge port, respectively, for sending and circulating the content liquid to the outside or another container or circulating the same. in reservoir vessel using a centrifugal pump with, at the top of the discharge opening is a casing, and Katayose near inlet
Contents of a centrifugal pump to be substantially sideways to position I
A liquid storage container characterized by being installed at a lower level than a container that sends out a liquid .