JP2007225251A - Electric water heater with water purifier - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric water heater capable of controlling temperature rise of a water purifier, with a compact constitution in which the water purifier and a hot water storage tank are stored in the same housing. <P>SOLUTION: This electric water heater comprises the water purifier, a first flow channel for introducing raw water to the water purifier, the hot water storage tank having a fluid inlet portion and a fluid outlet portion, a second flow channel for introducing the water purified by the water purifier to the fluid inlet portion of the hot water storage tank, a first heating device for heating the purified water flowing into the hot water storage tank from the fluid inlet portion, a water spouting means connected with the fluid outlet portion and spouting the heated purified water in the hot water storage tank, the housing receiving the water purifier and the hot water storage tank, a heat insulating material disposed on at least a part opposed to the water purifier in the hot water storage tank, and a cooling means for cooling at least either a gas around the water purifier or the water purifier in the housing. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an electric water heater with a water purifier, and more particularly to an electric water heater with a water purifier that suppresses the temperature rise of the water purifier.

  Generally, a water purifier includes an adsorbent such as activated carbon and a filtration membrane such as a hollow fiber membrane or a ceramic membrane, and adsorbs and removes off-flavor substances and harmful substances at the molecular level in tap water using the adsorbent. To capture and remove iron rust, colloidal components, bacteria, etc. (see, for example, Patent Document 1).

  In general, an electric water heater supplies tap water directly to the tank, heats the supplied water with a heater built in the tank and stores the hot water in the tank, and the user uses the hot water. When performing, the hot water in a tank is discharged (for example, refer patent document 2).

  Furthermore, for example, in order to supply hot water used for beverages and cooking, an electric water heater is also conceivable in which tap water is once purified by a water purifier, then supplied to a tank, heated and discharged. In this case, it is necessary to provide a water purifier and an electric water heater in one housing in order to reduce the installation space by using a compact device. However, if the water purifier is housed in the same housing as the hot water storage tank that heats and stores hot water and is heated, the temperature of the water purifier rises due to the heat radiated from the hot water storage tank.

  The adsorption performance of an adsorbent such as activated carbon in a water purifier is easily affected by temperature, and the adsorption power tends to be strong as the temperature is low, and the adsorption power tends to be weak as the temperature increases. Therefore, in a water purifier using an adsorbent such as activated carbon, the water purification performance tends to be higher as it is used at a lower temperature, and the water purification performance tends to be lower as the temperature is higher. In addition, if the temperature of the adsorbent changes rapidly from low temperature to high temperature, the adsorbed substance may be desorbed from the adsorbent, and water with reduced cleanliness may be supplied from the water purifier to the hot water storage tank. .

Further, in Patent Document 3, by installing a water purification means outside the water heating unit containing the water heating container and with a space between the water heating unit, the inside of the water purification means due to the thermal effect of the water heating container is provided. A hot water supply apparatus that suppresses the temperature rise of purified water is disclosed. However, the configuration in which the water purifying means is simply isolated from the kettle as in Patent Document 3 not only creates a dead space and hinders downsizing of the entire apparatus, but also does not necessarily provide a sufficient cooling effect. There is room for improvement.
JP-A-6-339676 JP-A-8-94177 JP-A-2005-106320

  This invention provides the electric water heater which suppressed the temperature rise of the water purifier, making it the compact structure which accommodated the water purifier and the hot water storage tank in the same housing | casing.

  According to one aspect of the present invention, a water purifier that contains an adsorbent in a container and purifies raw water into purified water, a first channel that introduces raw water into the water purifier, a fluid inlet portion, and a fluid outlet portion. A hot water storage tank, a second flow path for introducing purified water purified by the water purifier into a fluid inlet portion of the hot water storage tank, and a first heating the purified water flowing into the hot water storage tank from the fluid inlet portion A heating device connected to the fluid outlet, water discharge means for discharging heated purified water in the hot water storage tank, a housing for housing the water purifier and the hot water storage tank, and at least the purified water in the hot water storage tank With a water purifier, comprising: a heat insulating material provided in a portion facing the water purifier; and a cooling means for cooling at least one of the gas around the water purifier and the water purifier in the housing. Provided by electric water heater It is.

  According to the electric water heater with a water purifier of the present invention, while reducing the temperature rise of the water purifier while reducing the temperature of the water purifier while having a compact configuration in which the water purifier and the hot water storage tank are housed in the same housing, the adsorption performance in the adsorbent is reduced. Can be prevented.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[First Embodiment]
Drawing 1 is a mimetic diagram which illustrates the composition of the electric water heater with a water purifier concerning a 1st embodiment of the present invention.

  The water purifier 2 and the hot water storage tank 7 are accommodated in the same housing 3. The partition member for partitioning the space in the housing 3 is not provided in the housing 3, and the water purifier 2 and the hot water storage tank 7 are disposed in the same space in the housing 3. In the specific example shown in FIG. 1, the water purifier 2 and the hot water storage tank 7 are arranged side by side, but may be arranged side by side.

  FIG. 2 is a schematic view illustrating the structure of the water purifier 2.

  The water purifier 2 includes an adsorbent such as activated carbon (hereinafter, described using an example of using activated carbon) and a hollow fiber membrane filter 37. The activated carbon 36 and the hollow fiber membrane filter 37 are accommodated in a container 35. The activated carbon 36 adsorbs and removes, for example, trihalomethane, a salty odor, and the like. The hollow fiber membrane filter 37 captures, for example, iron rust and bacteria. In this specific example, the activated carbon 36 is disposed in the front stage (upstream side) and the hollow fiber membrane filter 37 is disposed in the rear stage (downstream side), but the arrangement relationship between them may be reversed. Further, the activated carbon and the hollow fiber membrane may be accommodated in separate containers. In addition, you may add the production | generation function of alkaline ion water, a mineral addition mechanism, etc. to the water purifier 2, for example.

  The hot water storage tank 7 is made of, for example, stainless steel, and a heat insulating material 19 is provided so as to cover the outer surface thereof. The heat insulating material 19 only needs to cover at least the portion of the hot water storage tank 7 that faces the water purifier 2 (the right side surface portion in FIG. 1). However, the heat insulation of the hot water storage tank 7 is enhanced by covering all the outer surfaces. It is done.

  The hot water storage tank 7 has a fluid inlet 21a and a fluid outlet 21b. Specifically, for example, the fluid inlet 21 a is provided at the center of the bottom of the hot water tank 7, and the fluid outlet 21 b is provided at the center of the upper surface of the hot water tank 7.

  Inside the hot water storage tank 7, a heater h (first heating device) for heating the purified water supplied into the hot water storage tank 7 is provided. The heater h is provided near the bottom of the hot water storage tank 7.

The inlet side of the water purifier 2 is connected to a water supply channel (first channel) 5 via a connector 11a. A valve (electromagnetic valve) 9 is provided in the water supply channel 5.
The outlet side of the water purifier 2 is connected to the flow path (second flow path) 15 via the connector 11b. By the flow path 15, the outlet side of the water purifier 2 and the fluid inlet portion 21 a of the hot water storage tank 7 are connected. Further, in the flow path 15, a check valve 13 that allows only the flow in the direction from the water purifier 2 to the hot water storage tank 7 is provided in the vicinity of the connector 11 b.

  The water purifier 2 is detachable from the connectors 11a and 11b and can be exchanged. In a state where the water purifier 2 is not connected to the connector 11a, an on-off valve (not shown) provided integrally with the connector 11a is closed, and the raw water is prevented from flowing out through the connector 11a. When the water purifier 2 is connected to the connector 11a, the aforementioned on-off valve is opened, and the water supply channel 5 and the water purifier 2 communicate with each other. Even if the water purifier 2 is removed from the connector 11b, the check valve 13 does not allow the purified water in the flow path 15 to flow out of the connector 11b. In addition, you may make it notify the replacement | exchange time of the water purifier 2 by providing the means to detect the water flow amount to the water purifier 2, and use time.

  A water discharge passage 23 is connected to the fluid outlet 21 b of the hot water storage tank 7. The water discharge channel 23 is connected to the water discharge channel 25 via a water discharge temperature adjusting device (or a flow rate adjusting device) 27.

  A flow path 17 is branched from the above-described flow path 15 through which the purified water purified by the water purifier 2 passes, and the flow path 17 is connected to a water discharge temperature adjusting device 27. The water discharge temperature adjusting device 27 detects the temperature of the hot water from the water discharge flow path 23 and the temperature of the cold water from the flow path 17 that does not pass through the hot water storage tank 7, and according to the water discharge temperature selected by the user. The mixing amount of the hot water from 23 and the cold water from the flow path 17 is controlled. Further, the water discharge temperature adjusting device 27 may have a structure like a thermostat.

The water purifier 2 is provided with temperature measuring means 29a for measuring the temperature of the water purifier 2. In addition, a temperature measuring unit 29b is provided in the upper part of the housing 3. The temperature measuring means 29a and 29b are temperature measuring means using, for example, a thermistor or a thermocouple.
The temperature measuring means 29b indirectly detects the temperature of the water purifier 2 by measuring the temperature of the air in the upper part of the space in the housing 3. Therefore, the temperature measuring means 29a and 29b are both used to detect the temperature of the water purifier 2, and it is not always necessary to provide both the temperature measuring means 29a and the temperature measuring means 29b, and only one of them can be provided. That's fine.

  The hot water storage tank 7 is also provided with temperature measuring means (not shown) for measuring the temperature of the purified water in the hot water storage tank 7. This temperature measuring means is provided, for example, in the center of the hot water storage tank 7 in the tank height direction or in the vicinity of the center. Furthermore, the hot water storage tank 7 is provided with a water level sensor (not shown) for detecting the level of purified water in the hot water storage tank 7.

  An intake port 3b is formed at the center of the bottom of the housing 3, for example, and an exhaust port 3a is formed at the center of the top wall of the housing 3 facing the bottom. Desirably, a breathable cover (not shown) is attached to the intake port 3b and the exhaust port 3a in order to prevent foreign matter and dust from entering the housing 3.

  A fan 31 is provided at or near the exhaust port 3a. The fan 31 is an exhaust fan that exhausts the air in the housing 3 from the exhaust port 3a. By driving the fan 31, air outside the housing 3 is sucked from the intake port 3b, and the sucked air flows through the housing 3 toward the exhaust port 3a, and from the exhaust port 3a to the housing 3 A flow of air is formed to be exhausted outside.

  Since the intake port 3b is located below the space between the hot water storage tank 7 and the water purifier 2 and the exhaust port 3a is located above the space, the hot water storage tank 7 and the water purifier 2 More air can flow in the space between the two.

  When the fan 31 is always driven, hot air is prevented from being trapped in the housing 3 due to the influence of heat from the hot water storage tank 7. Accordingly, high temperature air is prevented from staying around the water purifier 2, particularly in the space between the hot water storage tank 7 and the water purifier 2, and the temperature rise of the water purifier 2 is suppressed.

  When the fan 31 is driven only when the temperature measured by the temperature measuring means 29a and 29b is equal to or higher than a predetermined value, it exists around the water purifier 2, particularly in the space between the hot water storage tank 7 and the water purifier 2. Hot air can be exhausted out of the housing 3 through the exhaust port 3a, and the water purifier 2 is indirectly air-cooled. In this case, compared with the case where the fan 31 is always driven, power saving can be achieved, and the noise accompanying the driving of the fan 31 can be minimized.

  In addition, you may provide the fan which blows the air outside the housing | casing 3 comparatively low temperature suck | inhaled from the inlet 3b directly to the water purifier 2, and the water purifier 2 may be directly air-cooled.

  The control device 33 receives a temperature measuring means for measuring the temperature of the purified water in the hot water storage tank 7, a water level sensor, detection signals from the temperature measuring means 29a and 29b, a user operation signal, and the like, and receives the valve 9, the heater h, and the water discharge temperature. The operation of the adjusting device 27, the fan 31 (motor thereof), and the like are controlled. The control device 33 may be provided in the housing 3 or may be provided outside the housing 3.

  The temperature measuring means 29b is provided at a position where the temperature of the air around the water purifier 2 in the housing 3 can be measured. If the temperature distribution of the air in the housing 3 is uneven, In order to detect more quickly and cool the water purifier 2 more quickly, it is desirable to provide at a position where the temperature of the upper space where the temperature tends to be high due to the rising convection of the gas can be measured.

Next, the operation of the electric water heater with a water purifier according to the first embodiment will be described.
In the following description, the valve 9 is automatically controlled to open and close by a signal from the control device 33 in response to the operation of the operation member by the user. Alternatively, the valve 9 may be manually opened and closed by the user.

  FIG. 3 is a flowchart of the operation of supplying purified water to the hot water storage tank 7 and the operation of heating the supplied purified water in the electric water heater with a water purifier according to this embodiment.

  First, as step S1, the water level sensor detects the level of purified water in the hot water storage tank 7. Next, as step S2, it is determined whether or not the level of purified water in the hot water storage tank 7 has reached a predetermined level. If the level of purified water in the hot water storage tank 7 has not reached the predetermined level, step S2 is performed. In S3, the valve 9 is opened. Thereby, the raw water (tap water) is supplied to the water purifier 2 through the water supply channel 5 and purified, and the purified water is supplied to the hot water storage tank 7 through the channel 15 and the fluid inlet 21a. Water is supplied. At this time, the heater h is turned off (not energized).

  When the water level rises due to the supply of purified water into the hot water storage tank 7 and reaches a predetermined level, the process proceeds to step S4, and the valve 9 is closed under the control of the control device 33. Alternatively, when the hot water storage tank 7 is full, water is discharged from the water discharge passage 25, and the user may manually close the valve 9 while watching this.

  If the purified water is stored in the hot water storage tank 7 to the predetermined level, the temperature of the purified water is detected by the temperature sensor for the hot water storage tank, and whether the water temperature is at the predetermined temperature in step S5. Determine whether or not. If the water temperature does not reach the predetermined temperature, the heater h is turned on (energized) in step S6, and the purified water in the hot water storage tank 7 is heated. When the temperature of the purified water reaches a predetermined temperature, the heater h is turned off in step S7. The control of the heater h may be simple on / off control, but a control method such as proportional (P) control or proportional / integral / derivative (PID) may be used.

  The above steps are repeated, and in the standby state, for example, purified water having a temperature close to 100 ° C. is kept in the hot water storage tank 7 in a full state. Then, when the valve 9 that has been closed in the standby state is opened, purified water is supplied from the bottom of the hot water storage tank 7 through the fluid inlet 21a, whereby the hot water storage tank 7 is supplied from the fluid outlet 21b provided on the upper surface. The warm water inside is pushed out and discharged through the water discharge passages 23 and 25.

  The user can select the water discharge temperature by operating an operation member (not shown), and does not go through the hot water from the flow path 23 via the hot water storage tank 7 and the hot water storage tank 7 according to the selected water temperature. The mixing amount in the discharged water temperature adjusting device 27 with the cold purified water from the flow path 17 is adjusted. Depending on the water temperature selected by the user, it is possible to discharge only the unheated cold purified water flowing through the flow path 17.

  Moreover, in this embodiment, the primary pressure from a water supply etc. is sent to the water purifier 2 in the state which does not use purified water by providing the valve 9 which switches the water discharge / stop of water in the upstream of the water purifier 2. Not loaded. Therefore, the water pressure resistance of the water purifier 2 may be low, and the structure can be simplified.

  Moreover, since the heater h is provided in the vicinity of the bottom of the hot water storage tank 7, the entire purified water in the hot water storage tank 7 is made uneven by utilizing the characteristic that the hot fluid that has been expanded and lightened forms upward convection. Therefore, it is possible to efficiently heat, and in particular, it is possible to suppress the temperature decrease of the purified water at the lower part of the tank 7 where the temperature tends to decrease.

  For example, a heater that is turned on only when water in the hot water storage tank 7 is discharged and that supplementarily (instantaneously) heats the water in the upper part of the tank immediately before water discharge may be provided in the upper part of the hot water storage tank 7.

  Further, the heater h is turned on so that the temperature of the purified water in the hot water storage tank 7 does not rise more than necessary based on the temperature detected by the temperature sensor, and when the hot water storage tank 7 is empty based on the detection of the water level sensor. The control device 33 controls the energization of the heater h to prevent overheating of the hot water storage tank 7 and the purified water therein.

  Next, FIG. 4 is an operation flowchart of the cooling means (fan 31) in the electric water heater with a water purifier according to this embodiment.

  When the water purifier 2 is not connected to the connectors 11a and 11b, “No” is determined in step S101, and the valve 9 is closed in step S102. When the water purifier 2 is connected to the connectors 11a and 11b, the process proceeds to step S103, and the valve 9 is put into a water-flowing state. Thereby, raw water is passed through the water purifier 2.

  Next, the result of the temperature measurement in step S104 (at least the measured value of any of the temperature measuring means 29a and 29b is sufficient) is received, and in step S105, the temperature measured value and a predetermined value set in advance at the time of design. Is compared. Here, the “predetermined value” is, for example, 30 to 40 ° C., and more preferably 35 ° C.

  If the temperature measurement value is equal to or greater than the predetermined value and indicates the possibility of a decrease in the adsorption performance of the activated carbon, the fan 31 is driven in step S106. As a result, as described above, the air outside the housing 3 is sucked from the air inlet 3b, and the sucked air flows through the housing 3 toward the air outlet 3a. As a result, an air flow is formed to be exhausted to the outside, and air cooling of the inside of the housing 3 and the water purifier 2 is started. Since the exhaust port 3 a is formed in the upper wall portion of the housing 3, the hot air in the housing 3 can be efficiently exhausted outside the housing 3 by using the rising convection of the high-temperature air.

  In step S107, it is determined whether or not the user has requested clean water discharge. If the user does not request water discharge, the valve 9 is closed and water is not discharged in step S109 (hot water storage tank). No clean water is supplied to 7).

  When the user demands water discharge and the valve 9 is opened, it is said that the above-described air cooling has just started to be started in the water purifier 2 that has been at a temperature higher than the temperature at which the activated carbon adsorption performance is reduced. While warning the user with light or the like, the water that has passed through the water purifier 2 is supplied to the hot water storage tank 7, and the hot water in the vicinity of the fluid outlet 23 is pushed out by this water supply, through the water discharge channels 23 and 25. The water is discharged (step S108). Upon receiving this warning, the user can take measures such as closing the valve 9 to stop the water flow to the water purifier 2.

  If the measured temperature value is smaller than the predetermined value in step S105, the drive of the fan 31 is stopped in step S110. Thereby, the air cooling of the inside of the housing | casing 3 and the water purifier 2 is stopped.

  Then, in step S111, it is determined whether or not the user has requested clean water discharge. If the user does not request water discharge, that is, if the valve 9 is not opened, water discharge is not performed (step S113).

  When the user requests water discharge and the valve 9 is opened, the water that has passed through the water purifier 2 is supplied to the hot water storage tank 7 without warning, and the hot water near the fluid outlet 23 is supplied by this water supply. The water is discharged through the water discharge channels 23 and 25 (step S112). Since “Yes” is obtained in the previous step S105, the activated carbon is lower than the temperature at which the adsorption performance is lowered, so there is no need to warn the user.

  In step S106, the fan 31 may be driven and the valve 9 may be closed. In this case, water is not passed through the water purifier 2 even if the user requests water discharge. That is, water passage to the water purifier 2 in a state where the adsorption performance of the activated carbon is lowered is prohibited.

  Further, even when the temperature measurement value does not exceed the predetermined value and the fan 31 is not driven, the fan 31 is driven every predetermined time to cool the inside of the housing 3 and the water purifier 2. Good.

  As described above, according to the present embodiment, the water purifier 2 and the hot water storage tank 7 are accommodated in the same housing 3, and the water purifier 2 Even when the adsorption performance of the activated carbon decreases to a predetermined temperature or more due to the influence of heat from the hot water storage tank 7, it is cooled by driving the fan 31 as described above. Can provide clean water with high cleanliness.

  Moreover, since both the water purifier 2 and the hot water storage tank 7 are accommodated in the housing 3, they are not visually recognized from the outside, and the appearance of the electric water heater is not impaired.

Table 1 and FIG. 5 show the temperature dependence of chloroform adsorption on activated carbon when the equilibrium concentration of chloroform is 30 (ppb).
The activated carbon used for this measurement is pitch-based fibrous activated carbon having a specific surface area of 1500 (m ² / g).

  From these results, it can be seen that the amount of chloroform adsorbed on the activated carbon decreases as the temperature increases. Moreover, since the water purifier of this embodiment purifies tap water, what is necessary is just to make it not exceed the temperature of tap water. That is, in practical use, it can be said that it is sufficient to set the activated carbon to a temperature lower than, for example, 30 to 40 ° C.

  Hereinafter, other embodiments of the present invention will be described. In addition, about the element similar to what was mentioned above, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.

[Second Embodiment]
FIG. 6 is a schematic view illustrating the configuration of an electric water heater with a water purifier according to the second embodiment of the present invention.

A heater h is provided in the hot water storage tank 39 in the vicinity of the bottom.
In addition, for example, a cylindrical water discharge channel 49 extending upward from the tank bottom is provided in the hot water storage tank 39. The upper end portion and the lower end portion of the water discharge channel 49 are opened, and the opening at the lower end portion functions as the fluid outlet portion 41b. A fluid inlet portion 41 a is provided at the center of the upper surface portion of the hot water storage tank 39. The fluid inlet portion 41 a may be provided on the side surface or the bottom surface of the hot water storage tank 39.

  Further, inside the hot water storage tank 39, an escape passage 51 is provided for allowing water and air expanded in the tank by the heating from the heater h to escape outside the tank. Similarly to the water discharge flow path 49, the escape flow path 51 has an upper end portion and a lower end portion opened, and extends upward in a cylindrical shape from the tank bottom portion. A flow path 47 that connects the escape flow path 51 to the outside of the housing 3 is connected to the opening at the lower end of the escape flow path 51. The opening at the upper end of the escape channel 51 is located above the opening at the upper end of the water discharge channel 49. The escape passage 51 does not necessarily have to extend from the bottom of the tank, and may be attached to the inner surface of the tank.

  The outlet side of the water purifier 2 is connected to the flow path 43 via the connector 11b. The flow path 43 is connected to the fluid inlet 41 a of the hot water storage tank 39, and the purified water purified by the water purifier 2 is supplied to the hot water storage tank 39 through the flow path 43.

  The fluid outlet 41 b of the hot water storage tank 39 is connected to a water discharge passage 45 that discharges warm purified water in the hot water storage tank 39. A valve 53 is provided in the water discharge channel 53.

  At the bottom of the housing 3, an air inlet 3 b is formed below the water purifier 2. In the upper wall portion of the housing 3, an exhaust port 3 a is formed above the hot water storage tank 39. An exhaust fan 31 is provided at or near the exhaust port 3a.

  The control device 33 receives temperature detection means for measuring the temperature of purified water in the hot water storage tank 39, water level sensors, detection signals from the temperature measurement means 29a and 29b, user operation signals, etc., and receives valves 9, 53, heaters h, The operation of the fan 31 (or its motor) is controlled.

  The purified water purified by the water purifier 2 is supplied into the hot water storage tank 39 via the flow path 43 and the fluid inlet 41a, and is maintained at a water level above the upper end opening of the water discharge flow path 49. The purified water in the hot water storage tank 39 (including the inside of the water discharge channel 49) is heated by the heater h to a temperature close to 100 ° C., for example, and when the desired temperature is reached, the heater h is turned off.

  When the user uses warm water, the valve 53 is manually opened. Alternatively, a signal is sent from the control device 33 and the valve 53 is opened by the operation of the operation member by the user. When the valve 53 is opened, the warm purified water in the water discharge channel 49 flows out into the water discharge channel 45 so as to be pushed out from the fluid outlet 41b at the lower end by the action of gravity, and passes through the water discharge channel 45. The water is discharged to the user.

  When the water level in the hot water storage tank 39 and the water discharge channel 49 is lowered by this water discharge, the valve 9 is opened based on the detection of the water level sensor, and the purified water purified by the water purifier 2 from the channel 43 and the fluid inlet 41a. Water is supplied. When the water level in the hot water storage tank 39 reaches a predetermined level, the valve 9 is closed and the supply of purified water to the hot water storage tank 39 is stopped.

  Also in the present embodiment, as in the first embodiment, when the measured value of at least one of the temperature measuring means 29a and 29b becomes a predetermined value or more, the fan 31 is driven and the air outside the housing 3 is sucked. An air flow is formed in which the air sucked from the port 3b flows through the housing 3 toward the exhaust port 3a and is exhausted from the exhaust port 3a to the outside of the housing 3, 3 and the water purifier 2 are air-cooled.

  Thereby, the water purifier 2 and the hot water storage tank 39 are accommodated in the same housing 3, and the water purifier 2 is affected by the heat from the hot water storage tank 39 while realizing downsizing of the entire apparatus and space-saving installation. Even when the temperature exceeds a predetermined temperature at which the adsorption performance of the activated carbon is lowered, the cooling is performed by driving the fan 31 as described above. As a result, the performance of the activated carbon is prevented from being lowered, and high-purity water can be provided at any time. Moreover, since both the water purifier 2 and the hot water storage tank 39 are accommodated in the housing 3, they are not visually recognized from the outside, and the appearance of the electric water heater is not impaired.

[Third Embodiment]
FIG. 7: is a schematic diagram which illustrates the arrangement | positioning relationship of the hot water storage tank 7, the water purifier 2, and a cooling means in the electric water heater with a water purifier concerning the 3rd Embodiment of this invention.

  In the present embodiment, there is provided a pressure feeding system in which an intake fan 31 is provided at or near the intake port 3b formed at the bottom of the housing 3 and air outside the housing 3 sucked from the intake port 3b is pushed into the housing 3. Adopted. However, in this case, the wind speed distribution in the housing 3 is likely to be non-uniform, and it is easy to create a stagnation or stagnation.

  On the other hand, when the fan 31 is provided on the exhaust port 3a side as in the first and second embodiments, the air is pulled by the pressure difference due to the pressure near the fan 31 being reduced. The air can be drawn uniformly, and high-temperature air can be efficiently exhausted from the outside of the housing 3.

[Fourth Embodiment]
FIG. 8: is a schematic diagram which illustrates the arrangement | positioning relationship of the hot water storage tank 7, the water purifier 2, and a cooling means in the electric water heater with a water purifier concerning the 4th Embodiment of this invention.

  In the present embodiment, an intake port 3 b is provided below the water purifier 2 at the bottom of the housing 3, and an exhaust port 3 a is provided above the hot water storage tank 7 on the upper wall portion of the housing 3. The fan 31 is provided at or near the exhaust port 3a.

  By providing the exhaust port 3a above the hot water storage tank 7, the hot air around the hot water storage tank 7 can be efficiently exhausted using the rising convection. Since the intake port 3b is not provided at a position facing the hot water storage tank 7, air outside the relatively cool housing 3 sucked from the intake port 3b is directly blown to the hot water storage tank 7, and the hot water storage tank 7 and the inside thereof. Heated clean water can be prevented from being cooled. By providing the intake port 3b below the water purifier 2, the air at the relatively low temperature outside the housing 3 sucked from the intake port 3b can be directly blown to the water purifier 2 to efficiently cool the water purifier 2. .

[Fifth Embodiment]
FIG. 9: is a schematic diagram which illustrates the arrangement | positioning relationship of the hot water storage tank 7, the water purifier 2, and a cooling means in the electric water heater with a water purifier concerning the 5th Embodiment of this invention.

  In the present embodiment, the hot water storage tank 7 is disposed above the housing 3, and the water purifier 2 is disposed below the housing 3. By disposing the water purifier 2 below the hot water storage tank 7, the hot air around the hot water storage tank 7 is made difficult to flow to the water purifier 2 side by utilizing the rising convection of the high temperature air.

  The intake port 3b and the exhaust port 3a are provided on opposite side walls of the housing 3, respectively, so that an air flow is mainly formed in the space between the hot water storage tank 7 and the water purifier 2. Further, an exhaust port may be provided in the upper wall portion of the housing 3 to increase the exhaust efficiency of the high-temperature air around the hot water storage tank 7.

[Sixth Embodiment]
FIG. 10: is a schematic diagram which illustrates the arrangement | positioning relationship of the hot water storage tank 7, the water purifier 2, and a cooling means in the electric water heater with a water purifier concerning the 6th Embodiment of this invention.

  In the present embodiment, the hot water storage tank 7 is disposed above the housing 3, and the water purifier 2 is disposed below the housing 3. By disposing the water purifier 2 below the hot water storage tank 7, the hot air around the hot water storage tank 7 is made difficult to flow to the water purifier 2 side by utilizing the rising convection of the high temperature air.

  Further, an exhaust port 3 a is provided on the side of the hot water storage tank 7 to improve the exhaust efficiency of high-temperature air around the hot water storage tank 7, and the intake port 3 b is not provided at a position facing the hot water storage tank 7. It is possible to prevent the outside of the casing 3 from being sucked from the mouth 3b from being blown directly onto the hot water storage tank 7 so that the hot water storage tank 7 and the heated clean water therein are not cooled. By providing the air inlet 3b on the side of the water purifier 2, the air outside the casing 3 that has been sucked in from the air inlet 3b is directly blown to the water purifier 2 to efficiently cool the water purifier 2. Yes.

[Seventh Embodiment]
FIG. 11: is a schematic diagram which illustrates the arrangement | positioning relationship of the hot water storage tank 7, the water purifier 2, and a cooling means in the electric water heater with a water purifier concerning the 7th Embodiment of this invention.

  In the present embodiment, the water purifier 2 and the hot water storage tank 7 are arranged in the lateral direction in the housing 3. And the inlet 3b is provided in the part facing the water purifier 2 in the side wall part of the housing | casing 3, and the exhaust port 3a is provided in the part facing the hot water storage tank 7 in the side wall part opposite to the side wall part. Further, an exhaust fan 31 is provided at or near the exhaust port 3a. When the exhaust fan 31 operates, the outside air is sucked from the intake port 3b and the water purifier 2 is cooled.

[Eighth Embodiment]
FIG. 12: is a schematic diagram which illustrates the arrangement | positioning relationship of the hot water storage tank 7, the water purifier 2, and a cooling means in the electric water heater with a water purifier concerning the 8th Embodiment of this invention.

  In the present embodiment, the hot water storage tank 7 is disposed above the housing 3, and the water purifier 2 is disposed below the housing 3. An intake port 3 b is provided below the water purifier 2 at the bottom of the housing 3, and an exhaust port 3 a is provided above the hot water storage tank 7 at the upper wall portion of the housing 3. An intake fan 31 is provided at or near the intake port 3b. The water purifier 2 is cooled by blowing relatively low temperature air outside the housing 3. The high-temperature air around the hot water storage tank 7 is added with the effect of ascending convection and is exhausted from the exhaust port 3 a provided above the hot water storage tank 7. Instead of providing the intake fan 31 at the intake port 3b, an exhaust fan may be provided at the exhaust port 3a.

[Ninth Embodiment]
FIG. 13: is a schematic diagram which illustrates the arrangement | positioning relationship of the hot water storage tank 7, the water purifier 2, and a cooling means in the electric water heater with a water purifier concerning the 9th Embodiment of this invention.

  In the present embodiment, a Peltier element 55 is provided in addition to the fan 31 as a cooling means. One surface side of the Peltier element 55 functions as the heat absorbing portion 55a, and the opposite surface side of the heat absorbing portion 55a functions as the heat radiating portion 55b. The heat absorption part 55 a is in close contact with the upper part of the water purifier 2.

  An intake port 3 b is provided below the water purifier 2 at the bottom of the housing 3, and an exhaust port 3 a is provided above the water purifier 2 on the upper wall portion of the housing 3. The heat radiating portion 55b of the Peltier element 55 faces the exhaust port 3a side. The fan 31 is provided between the heat dissipation part 55b of the Peltier element 55 and the exhaust port 3a, for example, in the vicinity of the heat dissipation part 55b. The fan 31 may be provided in the vicinity of the exhaust port 3a or the exhaust port 3a. Moreover, you may provide the Peltier element 55 in parts other than the upper part of the water purifier 2. FIG.

  When power is supplied to the Peltier element 55 from a power supply source (not shown), heat is absorbed by the heat absorbing portion 55a and heat is generated by the heat radiating portion 55b. The water purifier 2 is cooled by the heat absorption at the heat absorption part 55 a, the heat generated at the heat radiation part 55 b is radiated to the surrounding space, and the air whose temperature has been raised by this heat radiation is exhausted from the exhaust port 3 a by driving the fan 31. .

[Tenth embodiment]
FIG. 14: is a schematic diagram which illustrates the arrangement | positioning relationship of the hot water storage tank 7, the water purifier 2, and a cooling means in the electric water heater with a water purifier concerning the 10th Embodiment of this invention.

  In the present embodiment, in addition to the configuration of the ninth embodiment, a heat sink 57 is provided on the heat dissipation portion 55b of the Peltier element 55 as a cooling means. By providing the heat sink 57 on the heat radiating portion 55b, the heat radiating effect of the heat generated in the heat radiating portion 55b is enhanced, and the heat generated in the heat radiating portion 55b is prevented from flowing back to the heat absorbing portion 55a side.

[Eleventh embodiment]
FIG. 15: is a schematic diagram which illustrates the arrangement | positioning relationship of the hot water storage tank 7, the water purifier 2, and a cooling means in the electric water heater with a water purifier concerning the 11th Embodiment of this invention.

  In this embodiment, in the configuration of the sixth embodiment shown in FIG. 10, a Peltier element 55 is provided on the upper portion of the water purifier 2 facing the hot water storage tank 7. The heat radiating portion 55 b of the Peltier element 55 is directed to the hot water storage tank 7. For this reason, high temperature air tends to flow toward the hot water storage tank 7 due to the rising convection of the air whose temperature has been increased by heat dissipation from the heat radiating portion 55b, and the heat retention effect of the hot water storage tank 7 is enhanced.

[Twelfth embodiment]
FIG. 16: is a schematic diagram which illustrates the arrangement | positioning relationship of the hot water storage tank 7, the water purifier 2, and a cooling means in the electric water heater with a water purifier concerning the 12th Embodiment of this invention.

  In this embodiment, in the configuration of the fourth embodiment shown in FIG. 8, a Peltier element 55 is provided on the side of the water purifier 2 facing the hot water storage tank 7. The heat radiating portion 55 b of the Peltier element 55 is directed to the hot water storage tank 7. Further, the fan 32 is provided between the heat radiating portion 55b of the Peltier element 55 and the hot water storage tank 7 and in the vicinity of the heat radiating portion 55b.

  When the Peltier element 55 and the fan 32 are driven, air whose temperature has been raised by heat radiation from the heat radiating portion 55 b is blown by the fan 32 toward the hot water storage tank 7, and the heat retention effect of the hot water storage tank 7 is enhanced.

  In the embodiment using the Peltier element 55 as the cooling means, the intake port, the exhaust port, and the fan are not necessarily provided.

[Thirteenth embodiment]
FIG. 17 is a schematic view illustrating the configuration of an electric water heater with a water purifier according to a thirteenth embodiment of the invention.

  The inlet part of the water purifier 2 is connected to the water supply flow path 61 via the connector 11a. A branch channel 65 branches from the water supply channel 61. In the water supply channel 61, a valve 67 is provided on the downstream side of the branch point of the branch channel 65. A valve 69 is provided in the branch flow path 65. The outlet of the water purifier 2 is connected to the above-described flow path 15 leading to the hot water storage tank 7 via the connector 11b. The electric water heater with a water purifier according to the present embodiment is a so-called “first-stop type” water heater with a water purifier, and the user is purified with the water purifier 2 and heated with the hot water storage tank 7. When using the valve 67, the valve 67 is opened. Here, the valve 67 may be a manual valve or an electromagnetic valve that opens and closes by an electrical signal.

  In this embodiment, the heat exchange means 71 is provided as a cooling means of the water purifier 2. Specifically, the heat exchange means 71 is a water jacket having a flow path (space) 71a through which raw water flows. The flow path 71a surrounds the upper surface and the side surface of the water purifier 2. The heat exchanging means 71 has an inlet part 73 a and an outlet part 73 b communicating with the flow path 71 a, the inlet part 73 a is connected to the branch flow path 65, and the outlet part 73 b is connected to the drainage flow path 63.

The raw water that has flowed through the branch flow path 65 flows into the flow path 71a through the inlet 73a, and the raw water that has flowed in directly contacts the outer surface 2a of the water purifier 2 and is connected to the water purifier 2. Heat exchange takes place at.
Alternatively, the heat exchanging means 71 may have a double wall structure in which a flow path (space) 71a is formed between an inner wall portion in contact with the outer surface 2a of the water purifier 2 and an outer wall portion in contact with external air. In addition, the raw water in the flow path 71a exchanges heat with the water purifier 2 via the inner wall portion in contact with the outer surface 2a of the water purifier 2.

  In the heat exchanging means 71, it is desirable that the outer wall portion that separates the flow path 71a from the outside air is made of a highly heat insulating material (for example, resin). Moreover, when it is set as the double wall structure mentioned above, it is desirable to comprise the inner wall part which touches the outer surface 2a of the water purifier 2 from materials (for example, copper, stainless steel, etc.) with high heat conductivity. If it does in this way, the heat exchange efficiency of the raw | natural water in the flow path 71a and the water purifier 2 can be improved.

  Moreover, you may provide the temperature measurement means which measures the raw | natural water temperature in the flow path 71a of the heat exchange means 71 as a temperature measurement means which detects the temperature of the water purifier 2 indirectly.

  Next, FIG. 18 is an operation flowchart of the electric water heater with a water purifier according to this embodiment. In the following description, the valve 67 is opened or closed manually or by an electrical signal from the control device 33 in accordance with a user's water discharge / water stop request. The valve 69 is opened and closed by an electrical signal from the control device 33.

  When the water purifier 2 is not connected to the connectors 11a and 11b, “No” is determined in step S201, and the valves 67 and 69 are closed in step S202. When the water purifier 2 is connected to the connectors 11a and 11b, the process proceeds to step S203, and the valve 67 is put into a water-flowing state. Thereby, raw water is supplied to the water purifier 2.

  Next, the temperature measurement result in step S204 (only one measurement value of the temperature measurement means 29a, 29b or the temperature measurement means provided in the heat exchange means 71 is received), and in step S205, the temperature is measured. The measured value is compared with a predetermined value set in advance. Here, the “predetermined value” is, for example, 30 to 40 ° C.

  If the temperature measurement value is equal to or greater than the predetermined value and indicates a possibility that the adsorption performance of the activated carbon is reduced, the valve 69 is opened in step S206. Thus, the raw water flows into the flow path 71a of the heat exchanging means 71 via the branch flow path 65, and the inflowed raw water flows through the flow path 71a while exchanging heat with the water purifier 2. The water is drained from the path 63. That is, water cooling of the water purifier 2 using raw water is started.

  Then, in the next step S207, it is determined whether or not the user requests water discharge, and if the user does not request water discharge, the valve 67 is closed and water is not discharged (in the hot water storage tank 7). Clean water is not supplied) (step S209).

  When the user demands water discharge and the valve 67 is opened, the water cooling just described has just started in the water purifier 2 that has been at a temperature higher than the temperature at which the adsorption performance of the activated carbon is reduced. While warning the user with light or the like, the water that has passed through the water purifier 2 is supplied to the hot water storage tank 7, and the hot water in the vicinity of the fluid outlet 23 is pushed out by this water supply, through the water discharge channels 23 and 25. The water is discharged (step S208). Upon receiving this warning, the user can take measures such as closing the valve 67 and stopping the water flow to the water purifier 2.

  If the measured temperature value is smaller than the predetermined value in step S205, it is determined in step S210 whether or not a predetermined time has elapsed since the measured temperature value became smaller than the predetermined value. . If the predetermined time has not elapsed since the temperature measurement value became smaller than the predetermined value, the process proceeds to step S206, the valve 69 is opened, and the water purifier 2 is cooled as described above.

  If a predetermined time has elapsed since the measured temperature value became smaller than the predetermined value, the valve 69 is closed in step S211. Thereby, inflow of the raw | natural water to the flow path 71a of the heat exchange means 71 is stopped, and the water cooling of the water purifier 2 is stopped. That is, even if the temperature measurement value becomes smaller than the predetermined value, the valve 69 is not immediately closed, but water is allowed to flow through the flow path 71a for a while, so that the activated carbon accommodated in the water purifier 2 is reliably predetermined. The temperature should be lower than the temperature (the temperature at which the adsorption performance decreases). Of course, step S210 may not be set, and the valve 69 may be closed immediately when the temperature measurement value becomes smaller than the predetermined value in step S205.

  Then, in step S212, it is determined whether or not the user is requesting water discharge, and if the user does not request water discharge, the valve 67 is closed and water discharge is not performed (the water storage tank 7 has no purified water). Water is not supplied) (step S214).

  When the user requests water discharge and the valve 67 is opened, the water that has passed through the water purifier 2 is supplied to the hot water storage tank 7 without warning, and the hot water in the vicinity of the fluid outlet 23 is supplied by this water supply. The water is discharged through the water discharge channels 23 and 25 (step S213). Since it becomes “Yes” in the previous steps S205 and S210, it means that the activated carbon is lower than the temperature at which the adsorption performance is lowered, so there is no need to warn the user.

  If the valve 69 is opened and the valve 67 is closed in step S206, water is not discharged from the water purifier 2 even if the user requests water discharge. That is, water discharge in a state where the adsorption performance of activated carbon is lowered is prohibited.

  Further, even when the temperature measurement value does not exceed a predetermined value and water is not passed through the flow path 71a of the heat exchanging means 71, the valve 69 is opened at regular intervals so that water flows into the flow path 71a. It may be.

  As described above, according to the present embodiment, the water purifier 2 and the hot water storage tank 7 are accommodated in the same housing 3, and the water purifier 2 Even if the adsorption performance of the activated carbon decreases to a predetermined temperature or more due to the influence of heat from the hot water storage tank 7, it is cooled by heat exchange with the raw water flowing through the heat exchange means 71 as described above. Preventing performance degradation and providing clean water with high purity at any time.

  In addition, in a state where raw water is not supplied to the flow path 71a of the heat exchange means 71, the flow path 71a functions as a heat insulating member that insulates the water purifier 2 and the outside, and the temperature in the housing 3 increases. Can suppress the temperature rise of the water purifier 2. From the viewpoint of enhancing the heat insulation effect, it is desirable that the outer wall portion of the flow path 71a is made of a material having high heat insulation properties such as resin. Constructing the outer wall portion of the flow path 71a from a highly heat-insulating material also prevents the temperature of the raw water from rising due to the temperature of the housing 3 when the raw water is supplied into the flow path 71a.

  In addition, since the water purifier 2 is cooled with the raw water flowing in the flow path 71a only when the temperature is higher than a predetermined temperature based on the measured temperature from the temperature measuring means, the amount of water used can be saved.

[Fourteenth embodiment]
FIG. 19 is a schematic view illustrating the configuration of the cooling means in an electric water heater with a water purifier according to a fourteenth embodiment of the present invention.

  In the present embodiment, the heat exchanging means 71 has a “first stop type” configuration. That is, the drain 79 is provided with a valve 79. The branch flow path 65 is provided with a check valve 75 that prevents a back flow from the heat exchange means 71 to the water supply flow path 61. Further, a valve 77 is provided in the flow path 15 connected to the outlet side of the water purifier 2 and continuing from the hot water storage tank 7. When the user uses the purified water, the valve 77 is opened manually or by an electric signal from the control device 33.

  When the measured temperature is lower than the predetermined temperature, the valve 67 is opened and the valve 79 is closed under the control of the control device 33. When the measured temperature is equal to or higher than the predetermined temperature, the valve 79 is opened, and the raw water for water cooling flows through the flow path 71a of the heat exchange means 71. At this time, the valve 67 may be closed so that water discharge from the water purifier 2 is prohibited, or the valve 67 may be opened to enable water discharge while the water purifier 2 is cooled with water. Further, when the measured temperature is equal to or higher than the predetermined temperature, the valve 77 is locked in the “closed state”, that is, it is controlled so that it does not open even if an instruction from the user is given. It is possible to prohibit water discharge at times. In addition, when passing water through the water purifier 2 even at a high temperature, the valve 67 may not be provided.

[Fifteenth embodiment]
FIG. 20 is a schematic view illustrating the main configuration of an electric water heater with a water purifier according to a fifteenth embodiment of the present invention.

  In the present embodiment, a heater H (second heating device) is provided at the bottom of the water purifier 2, for example. A discharge flow path 81 is branched from a flow path 15 that connects the outlet of the water purifier 2 and the hot water storage tank 7, and a three-way valve 87 is provided at this branch point. The discharge channel 81 is led out of the housing 3. The three-way valve 87 is controlled by an electric signal from the control device 33, or is controlled by a temperature-sensitive valve (a valve that changes the outlet according to the temperature).

  FIG. 21 is a flowchart of the heating regeneration mode of the water purifier 2 in the electric water heater with a water purifier according to this embodiment.

In the water purification mode (step S301) in which purified water can be supplied from the water purifier 2 to the hot water storage tank 7 (including during cooling), whether or not the heating regeneration condition is satisfied is determined by the control device 33 in step S302. The heating regeneration condition is a condition that requires heating regeneration of the water purifier 2, and examples thereof include the following conditions.
・ The time has come.
・ The specified time has passed since the last heating regeneration.
-An operation member such as a switch operated by the user to execute the heating regeneration mode was operated.
• A predetermined time has elapsed since the above switches were turned on.
• A predetermined time has elapsed since the resetting of the heat regeneration conditions.
・ The usage time of the water purifier has reached the specified time.
・ The amount of water passed to the water purifier has reached the specified amount.

  If the heating regeneration condition is not satisfied, the water purification mode is continued. In the water purification mode, the three-way valve 87 communicates between the water purifier 2 and the hot water storage tank 7 and blocks between the water purifier 2 and the discharge flow path 81.

  If the heating regeneration condition is satisfied, it is determined in step S303 whether or not water has passed through the water purifier 2 from the start of use of the water purifier 2 or the previous heating regeneration. If there is no water flow, the heating regeneration condition is reset in step S304, and the water purification mode is continued.

  If there has been water flow to the water purifier 2 since the start of use of the water purifier 2 or the previous heating regeneration, the process proceeds to step S305, where it is determined whether or not the water is purifying water (water supply to the hot water storage tank 7). The When the purified water is not being discharged (water supply), the process proceeds to the heating regeneration mode (step S306). When the purified water is being discharged (water supply), the process does not shift to the heating regeneration mode, but waits for the stop of the purified water discharge (water supply) and then shifts to the heating regeneration mode (step S306).

  In the heating regeneration mode, the heater H is energized under the control of the control device 33 to heat the water purifier 2. At this time, the three-way valve 87 shuts off between the water purifier 2 and the hot water storage tank 7 and allows communication between the water purifier 2 and the discharge flow path 81. The valve 69 is closed and the water cooling of the water purifier 2 is stopped. Further, the valve 67 is also closed, and the supply of raw water to the water purifier 2 is stopped.

  When the water purifier 2 is heated by the heater H, the water remaining in the water purifier 2 becomes steam, and harmful substances and off-flavor substances adsorbed on the activated carbon are desorbed and discharged with the steam. 81 is discharged. Thereby, the activated carbon of the water purifier 2 is cleaned and the service life is extended. In addition, since the three-way valve 87 shuts off between the water purifier 2 and the hot water storage tank 7, water or steam enriched with harmful substances desorbed from the activated carbon is prevented from flowing into the hot water storage tank 7. Can be prevented.

  Next, in step S307, it is determined whether or not the water purifier 2 has been heated to a predetermined temperature (for example, 120 to 150 ° C.) based on the temperature measurement value of the temperature measurement unit 29a. If the water purifier 2 has reached the predetermined temperature, the heater H is turned off in step S309, the heating regeneration mode is terminated, and in step S310, a predetermined time has elapsed from the start of the heating regeneration mode. If it is determined that there is, it returns to the water purification mode.

  If the predetermined time has not passed since the end of the heating regeneration mode, the water purifier 2 may still be at a high temperature. Since there is a possibility that it cannot be obtained sufficiently, after the heating regeneration mode ends, the water purifier 2 is allowed to cool before returning to the purified water mode. Alternatively, the water purifier 2 may be cooled by automatically opening the valve 69 immediately after the end of the heating regeneration mode.

  If the water purifier 2 has not reached the predetermined temperature in step S307 before the end of the heating regeneration mode, it is determined in step S308 whether a predetermined time has elapsed from the start of the heating regeneration mode. If the time has elapsed, the heating regeneration mode is terminated (step S309). This is to prevent excessive heating of the water purifier 2.

[Sixteenth Embodiment]
FIG. 22 is a schematic view illustrating the main configuration of an electric water heater with a water purifier according to the sixteenth embodiment of the invention.

  In the present embodiment, a discharge flow path 91 corresponding to the discharge flow path 81 in the thirteenth embodiment is provided to be branched from between the connector 11b and the outlet portion of the water purifier 2. A valve 93 is provided in the discharge channel 91. A valve 89 is provided in the flow path 15. The valves 89 and 93 are controlled by the control device 33.

  In the water purification mode, the valve 89 is opened and the valve 93 is closed under the control of the control device 33. In the heating regeneration mode, the valve 89 is closed and the valve 93 is opened under the control of the control device 33, so that water and steam in which harmful substances and the like desorbed from the activated carbon by heating by the heater H are concentrated are discharged from the discharge channel. 91 is discharged.

  In the thirteenth and fourteenth embodiments, the means for switching the water supply / water stoppage to the heat exchanging means 71 is a so-called “primary stop” structure provided on the upstream side of the heat exchanging means 71, Since the drainage channel 63 is not provided with an on-off valve, the raw water and steam in the channel 71 a expanded by heating in the heating regeneration mode can be released from the drainage channel 63.

  The embodiments of the present invention have been described above with reference to specific examples. However, the present invention is not limited to them, and various modifications can be made based on the technical idea of the present invention.

  In the first embodiment, instead of the valve 9 provided on the upstream side of the water purifier 2, a valve is provided in the flow path 15, and the water supply / stop water to the hot water storage tank 7 is controlled by opening and closing the valve. It may be.

  Moreover, you may use the water tank which accommodates the water purifier 2 as the heat exchange means 71. FIG. In this case, when raw water is supplied into the water tank, heat exchange is performed between the water purifier 2 and the raw water in the water tank through the outer surface of the water purifier 2 in contact with the raw water.

  The capacity of the cooling means may be adjusted according to the temperature of the temperature measuring means. For example, when the temperature of the hot water storage tank is heated compared to when the temperature gradually increases and slightly exceeds the specified temperature, such as in summer, the temperature is expected to rise rapidly. By increasing the amount of raw water flowing into the heat exchanging means or increasing the air volume of the fan, water discharge of harmful substances can be suppressed, and the state where purified water is not discharged can be solved instantly.

  Moreover, when heating the purified water of a hot water storage tank as mentioned above, it is assumed that the temperature in a housing | casing will rise rapidly. Therefore, when the temperature change amount per unit time of the temperature measured by the temperature measuring means is detected and the temperature change amount is not less than a predetermined value, the measured value of the temperature measuring means is not more than the predetermined temperature. Alternatively, the cooling means may be operated in anticipation of reaching the predetermined temperature.

It is a mimetic diagram which illustrates the composition of the electric water heater with a water purifier concerning a 1st embodiment of the present invention. It is a schematic diagram which illustrates the structure of a water purifier. In an electric water heater with a water purifier concerning a 1st embodiment, it is a flow chart of heating operation of supply of purified water to a hot water storage tank, and supplied purified water. It is an operation | movement flowchart of a cooling means (fan) in the electric water heater with a water purifier which concerns on 1st Embodiment. It is a temperature dependence characteristic figure of chloroform adsorption to activated carbon. It is a schematic diagram which illustrates the structure of the electric water heater with a water purifier which concerns on the 2nd Embodiment of this invention. It is a schematic diagram which illustrates the arrangement | positioning relationship of a hot water storage tank, a water purifier, and a cooling means in the electric water heater with a water purifier which concerns on the 3rd Embodiment of this invention. In the electric water heater with a water purifier which concerns on the 4th Embodiment of this invention, it is a schematic diagram which illustrates the arrangement | positioning relationship of a hot water storage tank, a water purifier, and a cooling means. In the electric water heater with a water purifier which concerns on the 5th Embodiment of this invention, it is a schematic diagram which illustrates the arrangement | positioning relationship of a hot water storage tank, a water purifier, and a cooling means. It is a schematic diagram which illustrates the arrangement | positioning relationship of a hot water storage tank, a water purifier, and a cooling means in the electric water heater with a water purifier which concerns on the 6th Embodiment of this invention. It is a schematic diagram which illustrates the arrangement | positioning relationship of a hot water storage tank, a water purifier, and a cooling means in the electric water heater with a water purifier which concerns on the 7th Embodiment of this invention. It is a schematic diagram which illustrates the arrangement | positioning relationship of a hot water storage tank, a water purifier, and a cooling means in the electric water heater with a water purifier which concerns on the 8th Embodiment of this invention. In the electric water heater with a water purifier concerning the 9th embodiment of the present invention, it is a mimetic diagram which illustrates arrangement relation of a hot water storage tank, a water purifier, and a cooling means. It is a schematic diagram which illustrates the arrangement | positioning relationship of a hot water storage tank, a water purifier, and a cooling means in the electric water heater with a water purifier which concerns on the 10th Embodiment of this invention. In the electric water heater with a water purifier concerning the 11th embodiment of the present invention, it is a mimetic diagram illustrating the arrangement relation of a hot water storage tank, a water purifier, and a cooling means. In the electric water heater with a water purifier concerning a 12th embodiment of the present invention, it is a mimetic diagram illustrating the arrangement relation of a hot water storage tank, a water purifier, and a cooling means. It is a schematic diagram which illustrates the structure of the water heater with water purifier which concerns on the 13th Embodiment of this invention. It is an operation | movement flowchart of the electric water heater with a water purifier which concerns on 13th Embodiment. In the electric water heater with a water purifier concerning a 14th embodiment of the present invention, it is a mimetic diagram which illustrates the composition of the principal part. In the electric water heater with a water purifier concerning a 15th embodiment of the present invention, it is a mimetic diagram which illustrates the composition of the principal part. In the electric water heater with a water purifier which concerns on 15th Embodiment, it is a flowchart of the heating regeneration mode of the water purifier 2. FIG. In the electric water heater with a water purifier concerning the 16th embodiment of the present invention, it is a mimetic diagram which illustrates the composition of the principal part.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 2 ... Water purifier, 3 ... Housing, 3a ... Exhaust port, 3b ... Intake port, 7 ... Hot water storage tank, 19 ... Heat insulation material, 29a, 29b ... Temperature measuring means, 31 ... Fan, 33 ... Control apparatus, 36 ... Activated carbon 37 ... Hollow fiber membrane filter, 39 ... Hot water storage tank, 55 ... Peltier element, 57 ... Heat sink, 71 ... Heat exchange means, 71a ... Fluid passage, h ... First heating device, H ... Second heating device

Claims (9)

A water purifier that contains an adsorbent in the container and purifies the raw water into purified water;
A first flow path for introducing raw water into the water purifier;
A hot water storage tank having a fluid inlet portion and a fluid outlet portion;
A second flow path for introducing purified water purified by the water purifier into a fluid inlet of the hot water storage tank;
A first heating device for heating the purified water flowing into the hot water storage tank from the fluid inlet,
A water discharging means connected to the fluid outlet for discharging heated purified water in the hot water storage tank;
A housing for housing the water purifier and the hot water storage tank;
A heat insulating material provided at least in a portion facing the water purifier in the hot water storage tank;
A cooling means for cooling at least one of the gas around the water purifier and the water purifier in the housing;
An electric water heater with a water purifier, characterized by comprising: Temperature measuring means for measuring the temperature of at least one of the gas in the housing and the water purifier;
A control device that performs control to stop the cooling unit when the measured value of the temperature measuring unit is smaller than a predetermined value, and to operate the cooling unit when the measured value of the temperature measuring unit is equal to or larger than the predetermined value When,
The electric water heater with a water purifier according to claim 1, further comprising:   The said cooling means is a fan which blows gas to the said water purifier, or forms the flow of gas in the space between the said water purifier and the said hot water storage tank in the said housing | casing. An electric water heater with a water purifier as described in 1.   In the housing, an intake port is provided on the water purifier side with respect to a space between the water purifier and the hot water storage tank, and an exhaust port is provided on the hot water storage tank side with respect to a space between the water purifier and the hot water storage tank. An electric water heater with a water purifier according to claim 3, wherein: The cooling means is
A branch channel branched in the middle of the first channel;
Heat exchange means provided in connection with the branch flow path so that the raw water flowing in the branch flow path exchanges heat with the water purifier,
The electric water heater with a water purifier according to claim 1 or 2, characterized by comprising:   The electric water heater with a water purifier according to claim 1 or 2, wherein the cooling means is a Peltier element provided with a heat absorption part facing the water purifier.   The electric water heater with a water purifier according to claim 6, wherein the Peltier element has a heat radiating portion facing the hot water storage tank. A second heating device for heating the water purifier;
A discharge flow path for discharging at least one of waste water and steam generated in the water purifier by heating by the second heating device;
Further comprising
While the water purifier is being heated by the second heating device, the control device does not operate the cooling unit even if a measured value of the temperature measuring unit becomes a predetermined value or more. The electric water heater with a water purifier according to claim 2. 3. The electric water heater with a water purifier according to claim 2, wherein temperature measuring means for measuring the temperature of the gas in the casing is provided in an upper portion of the space in the casing.

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