KR20210157607A - Instantaneous water heating apparatus - Google Patents

Abstract

The present invention relates to an instantaneous water heating device, wherein purified raw water can be heated rapidly to a set temperature regardless of outflow capacity without additional installation of a separate instantaneous heating device. The present invention discloses an instantaneous water heating device as one embodiment, comprising: a main body having a water outlet arranged at one side and having an input panel arranged at the other side to input a set temperature or outflow capacity; a hot water tank arranged in the main body; an inflow line connected to the hot water tank so that raw water supplied from the public water supply can be stored in the hot water tank after passing a purification filter, and having an inflow valve installed thereon; a heater installed on the hot water tank to heat water in the hot water tank; an outflow line connecting the upper side of the hot water tank and the water outlet so that hot water heated by the heater can be discharged through the outlet, and having an outflow valve installed thereon; an incoming flow sensor installed at the downstream of the inflow valve on the inflow line and detecting the amount of water supplied to the hot water tank; an inflow temperature sensor installed on the inflow line and detecting the temperature of water introduced into the hot water tank; an outflow temperature sensor installed on the hot water tank and detecting the temperature of water introduced into the outflow line; and a control panel installed on the main body and controlling voltage provided to the heater depending on the input signal of the input panel and the sensor signals of the incoming flow sensor, the inflow temperature sensor and the outflow temperature sensor.

Description

Instantaneous heating water heater {INSTANTANEOUS WATER HEATING APPARATUS}

The disclosed content relates to an instantaneous water heater that is installed in various places such as, for example, a coffee shop, a convenience store, a restaurant, an office, and the like and supplies high-temperature hot water through heating of purified raw water when necessary.

Unless otherwise indicated herein, the contents described in this identification are not prior art to the claims of this application, and the description in this identification is not admitted to be prior art.

In general, a water heater for supplying hot water is installed in places such as coffee shops, convenience stores, restaurants, and offices. Such a water heater includes a hot water tank, an inlet line for storing raw water supplied from the tap water through a water purification filter in the hot water tank, a heater installed in the hot water tank to heat the water in the hot water tank to a set temperature, and the hot water temperature in the hot water tank. It includes a temperature sensor for measuring, and a water outlet line for discharging hot water heated by a heater in the hot water tank.

Conventional water heaters have a problem in that the hot water temperature in the hot water tank is always maintained at a set temperature by measuring the hot water temperature in the hot water tank.

As a way to solve this problem, a high-temperature water heater equipped with an instantaneous heating function was developed so that an instantaneous heating device was installed on the outlet line of the hot water tank so that hot water of a desired temperature could be immediately supplied by the user.

As an example of such a water heater, Korean Patent Registration No. 10-0775599 (published on Nov. 9, 2007) discloses a room temperature water tank for storing room temperature water, a lukewarm water tank for storing warm water at a temperature higher than room temperature water through heating by a heating means, A control unit for setting a temperature of water desired by a user; an instantaneous heating device that receives and heats the water supplied from the room temperature water tank or the lukewarm water tank and supplies it to the outside; A water heater having an instantaneous heating function including a control unit for controlling a flow path so that water of a temperature that is lower than the temperature set by the operation unit and closest to the temperature set by the operation unit is provided to the instantaneous heating device is disclosed.

In addition, the Republic of Korea Patent Publication No. 10-2012-0011924 (published on Feb. 9, 2012) discloses a filter unit that filters raw water obtained from the outside, and hot water by receiving purified water from the filter unit. ), an instantaneous hot water module including a heating unit for instantaneous heating; Instantaneous heating type water purifier including a water outlet for discharging (冷水) and purified water to the outside, and connecting to the instantaneous hot water module to discharge the heated hot water to the outside when the heated hot water is above a set temperature is disclosed.

However, in the case of the conventional instantaneous heating type water heater as described above, it takes a certain time to heat the purified raw water to the set temperature, and it is applicable only to a relatively small amount of outflow water. There was a problem that it was difficult to configure more compactly.

1. Republic of Korea Patent Registration No. 10-0775599 (2007.11.09. Announcement) 2. Republic of Korea Patent Publication No. 10-2012-0011924 (published on Feb. 9, 2012)

It is intended to provide an instantaneous heating type high-temperature water heater so that purified raw water can be rapidly heated to a set temperature regardless of the outlet capacity without additional installation of a separate instantaneous heating device.

In addition, it is not limited to the technical problems as described above, and it is obvious that another technical problem may be derived from the following description.

The disclosed contents include a main body having a water outlet on one side and an input panel for inputting a set temperature or amount of water on the other side, a hot water tank provided in the main body, and raw water supplied from the water supply through a water purification filter to be stored in the hot water tank. An inlet line connected to the hot water tank and installed with a water inlet valve, a heater installed in the hot water tank to heat water in the hot water tank, and the upper side of the hot water tank and the water outlet so that the hot water heated by the heater is discharged through the water outlet A water outlet line that connects and the water outlet valve is installed, a water inlet flow sensor installed on the downstream side of the water inlet valve on the inlet line to detect the amount of water supplied to the hot water tank, A water temperature sensor for detecting the temperature of water, an outlet temperature sensor installed in the hot water tank and sensing the temperature of water flowing into the water outlet line, and an input signal from the input panel installed in the main body, the acquisition flow rate sensor, the The instantaneous heating type water heater including a control panel for controlling the voltage provided to the heater according to the sensor signal of the inlet temperature sensor and the water outlet temperature sensor is presented as an embodiment.

According to a preferred feature of the disclosure, it further includes a normally open type solenoid valve provided on the upper side of the hot water tank and opened when the internal pressure of the hot water tank rises above a set pressure.

According to a preferred feature of the disclosed content, it further includes a pressure reducing valve installed upstream of the acquisition valve on the acquisition line, and a quantitative valve installed on the acquisition valve on the acquisition line.

According to a preferred feature of the disclosure, it further includes a safety valve provided at the front or rear end of the normally open type solenoid valve and opened when the internal pressure of the hot water tank rises above a set pressure.

According to the instantaneous heating type water heater according to an embodiment of the present disclosure, the control panel controls the voltage provided to the heater according to the input signal of the input panel and the sensor signal of the water inlet flow sensor, the water temperature sensor and the water outlet temperature sensor to control the set temperature. As the hot water is configured to be discharged immediately, there is an advantage in that purified raw water can be rapidly heated to a set temperature regardless of the water outlet capacity without additional installation of a separate instantaneous heating device.

Effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

1 is a perspective view of an instantaneous heating type water heater according to an embodiment of the disclosed subject matter.
2 is an internal structural diagram of an instantaneous heating type water heater according to an embodiment of the disclosed subject matter.
3 is an internal structural diagram of an instantaneous heating type water heater according to an embodiment of the disclosure having a primary heating heater and a secondary heating heater.
4 is a block diagram of an instantaneous heating type water heater according to an embodiment of the disclosed subject matter.

Hereinafter, with reference to the accompanying drawings, the configuration and effects of preferred embodiments will be described. For reference, in the following drawings, each component is omitted or schematically illustrated for convenience and clarity, and the size of each component does not reflect the actual size. In addition, the same reference numerals refer to the same components throughout the specification, and reference numerals for the same components in individual drawings will be omitted.

1 is a perspective view of an instantaneous heating type water heater according to an embodiment of the disclosed contents, FIG. 2 is an internal structural diagram of an instantaneous heating type water heater according to an embodiment of the disclosed contents, and FIG. 3 is a primary heating heater and a secondary heating heater It is an internal structural diagram of an instantaneous heating type water heater according to an embodiment of the disclosed subject matter.

As shown in FIGS. 1 to 3, the instantaneous heating type water heater according to an embodiment of the disclosure is provided with a water outlet 11 on one side and an input panel 13 through which a set temperature or water outlet amount is inputted on the other side. (10), the hot water tank 20 provided in the main body 10, and the raw water supplied from the tap water is connected to the hot water tank 20 so that the raw water supplied from the water supply is stored in the hot water tank 20 through the water purification filter 31, and a water inlet valve (33) is installed in the inlet line 30, the heater 40 is installed in the hot water tank 20 to heat the water in the hot water tank 20, and the hot water heated by the heater 40 is the outlet 11 ), the hot water tank 20 and the water outlet 11 are connected and the water outlet valve 51 is installed downstream of the water inlet valve 33 on the water inlet line 30 and the hot water A water flow sensor 60 for detecting the amount of water supplied to the tank 20, and a water temperature sensor 70 for detecting the temperature of water that is installed in the water line 30 and received into the hot water tank 20, and hot water A water outlet temperature sensor 80 installed in the tank 20 and sensing the temperature of water flowing into the water outlet line 50, and an input signal from the input panel 13 installed in the main body 10, and a water flow sensor 60 ), and includes a control panel 90 for controlling the voltage provided to the heater 40 according to the sensor signal of the water inlet temperature sensor 70 and the water outlet temperature sensor 80.

Here, the main body 10 forms the outer housing of the instantaneous heating type water heater according to an embodiment of the disclosed content, and can be formed, for example, as a case in the shape of a rectangular parallelepiped.

A water outlet 11 for discharging hot water is provided on the central side of the main body 10, and an input panel 13 for inputting a set temperature or water outlet amount is provided on the upper side of the main body 10 as a combination of a plurality of buttons and a display panel. And, the lower end of the body 10 is provided with a mounting base 15 on which the cup or container is seated.

A hot water tank 20 is provided in the body 10 described above. The hot water tank 20 forms a hot water storage space where raw water supplied from the tap water is stored through the water purification filter 31 and then heated by the heater 40, and can be manufactured in a cylindrical water tank shape of a certain capacity made of stainless steel. do.

A temperature sensor for measuring the surface temperature of the hot water tank 20 or the temperature of the hot water in the hot water tank 20 may be separately provided in the hot water tank 20 . In addition, the outer peripheral surface of the hot water tank 20 is surrounded by a heat-resistant or non-combustible insulating material (not shown).

The shape, material, manufacturing method, etc. of the hot water tank 20 are already known in the field of water heaters or water purifiers, and further detailed description will be omitted here for the sake of simplification of the specification.

The above-described hot water tank 20 is connected to the water inlet line 30 . The acquisition line 30 corresponds to a pipeline that stores raw water supplied from the water supply in the hot water tank 20 after it is purified. A water inlet valve (33) is installed to control whether the availability of (20) and the amount obtained through opening and closing.

It is preferable that the inlet valve 33 is formed as a solenoid valve so that it can be opened and closed by an electric signal of the control panel 90 to be described later. The acquisition valve 33 may be formed as a solenoid valve integrally provided with a stepping motor.

A heater 40 is installed in the above-described hot water tank 20 . The heater 40 serves to heat the water stored in the hot water tank 20 to a set temperature, and the heating wire and the protective tube are insulated by embedding a heating wire in a coil shape in a metal protective tube and filling with magnesium oxide, an insulating powder. It can be formed as a tube or rod-shaped sheath heater. The capacity of the heater 40 is, for example, 1,200W to 1,900W can be formed.

In addition, it is preferable that the heater 40 is connected to power so that the heater capacity is automatically controlled by the control of the control panel 90 according to the quantity obtained so that self-overheating can be prevented.

As shown in FIG. 2, the heater 40 may be formed of only one heater for keeping warm and rapid heating, and according to an embodiment, as shown in FIG. It may include a primary heating heater (40a) and a secondary heating heater (40b) installed on the inner upper side of the hot water tank (20). At this time, the primary heating heater 40a is used as a heater for heat retention and heating for maintaining the water in the hot water tank 20 at a constant temperature, and the secondary heating heater 40b is heated with hot water of a set temperature when water is drawn out. It can be used as a heater for heating.

The installation configuration of the heater 40 for the hot water tank 20 is known in the field of water heaters or water purifiers, and further detailed description will be omitted here for the sake of simplification of the specification.

The water outlet line 50 is connected to the above-described hot water tank 20 . The water outlet line 50 corresponds to a pipe through which the hot water heated by the heater 40 is discharged through the water outlet 11 , and connects the hot water tank 20 and the water outlet 11 .

A water outlet valve 51 is installed on the water outlet line 50 to control whether the hot water in the hot water tank 20 is discharged and the amount of water discharged through opening and closing.

It is preferable that the water outlet valve 51 is formed as a solenoid valve so as to be able to be opened/closed by an electric signal from the control panel 90, which will be described later. The water outlet valve 51 may be formed as a solenoid valve integrally provided with a stepping motor.

The acquisition flow sensor 60 is installed on the above-mentioned acquisition line 30. The acquisition flow sensor 60 is supplied from a water supply source and after being purified, it detects the amount of water supplied to the hot water tank 20 and corresponds to a sensor that transmits the sensor signal to the control panel 90, the acquisition line 30 ) is installed on the downstream of the water inlet valve (33).

The acquisition flow sensor 60 is provided with a rotating body rotatable by the water flow therein, so that the amount of flowed water can be calculated based on the rotation amount of the rotating body. It is possible.

In addition, the acquisition line 30, the acquisition temperature sensor 70 is installed. The acquisition temperature sensor 70 corresponds to a sensor that detects the temperature of water received into the hot water tank 20 and transmits the sensor signal to the control panel 90, and is formed as a conventional contact-type temperature sensor or a non-contact temperature sensor. It is possible.

The acquisition temperature sensor 70 may be installed separately from the acquisition flow rate sensor 60 on the acquisition line 30 , but it is preferable to be additionally installed to the acquisition flow sensor 60 .

The water outlet temperature sensor 80 is installed in the hot water tank 20 described above. The water outlet temperature sensor 80 corresponds to a sensor that senses the temperature of water flowing into the water outlet line 50 and transmits the sensor signal to the control panel 90 , and may be formed as a conventional contact temperature sensor.

It is preferable that the lower end of the water outlet temperature sensor 80 extends to the lower end of the water outlet line 50 introduced into the hot water tank 20 .

The control panel 90 is installed in the body 10 described above. The control panel 90 receives the input signal of the input panel 13 and the voltage provided to the heater 40 according to the sensor signals of the water flow sensor 60 , the water temperature sensor 70 and the water outlet temperature sensor 80 . It controls and plays a role so that purified raw water can be rapidly heated to a set temperature regardless of the outflow capacity without additional installation of a separate instantaneous heating device. It is electrically connected to the sensor 70 and the water outlet temperature sensor 80 , and is also electrically connected to the water inlet valve 33 of the water inlet line 30 and the water outlet valve 51 of the water outlet line 50 .

The control panel 90 may be attached and installed on the inner wall of the main body 10, but is fixed to the upper surface of the hot water tub 20 for ease of wiring and is provided with an installation bracket extending spaced apart from the side of the hot water tub 20 ( 91) is preferably fixed on the top. The lower end of the installation bracket 91 may be additionally provided with a pipe holder to which a part of the acquisition line 30 is fitted.

In addition, a normally open type solenoid valve 100 may be further provided above the above-described hot water tank 20 . The normally open solenoid valve 100 is normally maintained in an open state so that steam discharged through the safety valve 130 to be described later can be naturally discharged, and only when hot water is discharged from the control panel 90 of the control panel 90 . As it is closed by a control signal, it serves to prevent high-temperature hot water from being discharged to the outside through the safety valve 130 when water is discharged.

In this case, the inlet/outlet stainless steel ball top or stainless steel float sensor may not be installed inside the hot water tank 20 depending on whether the steam generating function is present, and the inlet/outlet stainless steel ball top (not shown) or stainless steel float sensor (not shown) may be installed.

In addition, a pressure reducing valve 110 is installed in the upstream of the acquisition valve 33 on the aforementioned acquisition line 30 . The pressure reducing valve 110 reduces the pressure of the secondary side fluid to a constant pressure lower than the primary side pressure regardless of the fluctuation of the flow rate of the high pressure primary side fluid, that is, the water pressure of water obtained through the acquisition line 30 is reduced It serves to keep it constant.

The pressure reducing valve 110 applies the principle that when the fluid comes out from a narrow gap to a wide place, the pressure drops, and the narrower the gap, the greater the degree of pressure reduction. It is formed in a conventional pressure reducing valve structure for reducing pressure.

In addition, it is preferable that the quantitative valve 120 is directly connected to the acquisition valve 33 on the acquisition line 30 . The metering valve 120 is a valve that maintains a constant flow rate of the fluid by changing the opening degree (opening area) of the valve according to the pressure change on the upstream side (primary side).

The above-described pressure reducing valve 110 and the quantitative valve 120 induces the measurement of the amount obtained by the water flow sensor 60 to be made more accurately.

A safety valve 130 is provided at the front or rear end of the normally open type solenoid valve 100 described above. The safety valve 130 is opened when the internal pressure of the hot water tub 20 rises above the set pressure, and exhausts the air or steam filled therein to the outside so that the internal pressure of the hot water tub 20 is lower than the set pressure. It serves to maintain, and it is preferable to form a high-temperature operated solenoid valve so that operation is not unreasonable even in high-temperature air or steam.

4 is a block diagram of an instantaneous heating type water heater according to an embodiment of the disclosed subject matter. Hereinafter, the overall operation of the instantaneous heating type water heater according to an embodiment of the disclosed contents with reference to FIGS. 1 to 4 is described as follows:

When the user sets the temperature (which may be preset) and the amount (optional) of the hot water discharged through the input panel 13 in a state where the container is mounted on the mounting table 15, the control panel 90 At the same time as opening the water inlet valve 33, the sensor signals of the water flow sensor 60, the water temperature sensor 70 and the water outlet temperature sensor 80 are received.

At this time, the control panel 90 is the temperature of the hot water set through the input panel 13, the acquisition flow measured by the acquisition flow sensor 60, the acquisition temperature and the water outlet temperature sensor measured by the acquisition temperature sensor 70 ( 80), by controlling the voltage supplied to the heater 40 according to the water outlet temperature measured by the water heater, the water in the hot water tank 20 can be rapidly heated to a set temperature regardless of the outlet water capacity.

For example, assuming that the temperature of the hot water to be dispensed is set to 98° C. through the input panel 13 and the maximum allowable capacity of the heater 40 is 1900 W, the outlet temperature sensor installed in the hot water tank 20 when hot water is dispensed. When the water outlet temperature measured by 80 is 98° C., the control panel 90 prevents power from being applied to the heater 40 , and the water outlet measured by the water outlet temperature sensor 80 installed in the hot water tank 20 . When the temperature is 97°C, the control panel 90 allows 600W power to be applied to the heater 40, and controls when the water outlet temperature measured by the water outlet temperature sensor 80 installed in the hot water tank 20 is 96°C. The panel 90 allows 1,200 W of power to be applied to the heater 40, and when the temperature at the time of water outlet measured by the water outlet temperature sensor 80 installed in the hot water tub 20 is 95° C., the control panel 90 This causes a power of 1,900W to be applied to the heater 40 .

Also, for example, assuming that the temperature of the hot water to be discharged is set to 95 ℃ through the input panel 13 and the maximum allowable capacity of the heater 40 is 1,600W, the amount of water obtained per minute measured by the water flow sensor 60 When this is more than 500cc, the control panel 90 allows power of 1,600W, which is the maximum capacity, to be applied to the heater 40, and when the water intake per minute measured by the water flow sensor 60 is 500cc or less, the control panel 90 is So that the power of the maximum capacity of 1,500W is applied to the heater 40, and when the amount of water per minute measured by the water flow sensor 60 is less than 400cc, the control panel 90 sets the heater 40 to the maximum capacity of 1,200W of power is applied, and when the amount of water available per minute measured by the water flow sensor 60 is 350 cc or less, the control panel 90 allows the heater 40 to receive power of 900W, which is the maximum capacity, and the water flow sensor ( 60) when the water intake per minute measured by 300 cc or less, the control panel 90 so that the power of the maximum capacity of 600 W is applied to the heater 40, the water intake per minute measured by the water flow sensor 60 is 250 cc When below, the control panel 90 so that the maximum capacity of 300W power is applied to the heater (40).

The control of the power supply of the heater 40 by the control panel 90 as described above minimizes the overheating and steam generation due to miscellaneous heat immediately after the temperature rise and the heater 40 is turned off.

When it is measured by the water outlet temperature sensor 80 that the hot water in the hot water tank 20 has been heated to a set temperature through the power supply control of the heater 40 by the control panel 90 described above, the water outlet valve 51 is set to a certain level. It is opened for a period of time so that hot water can be discharged by a set amount through the water outlet 11, and at the same time, the water inlet valve 33 is opened, and the sensor of the water flow rate sensor 60, the water temperature sensor 70 and the water outlet temperature sensor 80 is opened. It repeats receiving the signal again and supplying power to the heater 40 .

Therefore, in the case of an instantaneous heating type water heater according to an embodiment of the disclosed content, the input signal of the input panel 13 and the sensor signal of the water input flow rate sensor 60 , the water temperature sensor 70 and the water outlet temperature sensor 80 . Accordingly, the control panel 90 controls the voltage provided to the heater 40 so that the hot water of the set temperature is immediately discharged, so that purified raw water can be discharged without additional installation of a separate instantaneous heating device regardless of the discharge capacity. It is rapidly heated to the set temperature so that the water can be discharged quickly.

Although preferred embodiments of the present invention have been described with reference to the accompanying drawings, the embodiments described in the present specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention and represent all of the technical spirit of the present invention. Therefore, it should be understood that there may be various equivalents and modifications that can be substituted for them at the time of filing the present application. Therefore, the embodiments described above are to be understood as illustrative and not restrictive in all respects, and the scope of the present invention is indicated by the following claims rather than the detailed description, and the meaning and scope of the claims and their All changes or modifications derived from the concept of equivalents should be construed as being included in the scope of the present invention.

10: body
11: water outlet
13: input panel
15: seat
20: hot water tank
30: intake line
31: water filter
33: inlet valve
40: heater
50: exit line
51: water outlet valve
60: intake flow sensor
70: intake temperature sensor
80: water outlet temperature sensor
90: control panel
91: installation bracket
100: normally open type solenoid valve
110: pressure reducing valve
120: metering valve
130: safety valve

Claims (6)

a main body having a water outlet on one side and an input panel on the other side for inputting a set temperature or water output amount;
a hot water tank provided in the body;
an inlet line connected to the hot water tank so that raw water supplied from the water supply is stored in the hot water tank through a water purification filter and a water inlet valve is installed;
a heater installed in the hot water tank to heat water in the hot water tank;
a water outlet line connecting an upper side of the hot water tank and the water outlet so that the hot water heated by the heater is discharged through the water outlet, and in which a water outlet valve is installed;
A water flow sensor that is installed on the downstream side of the water inlet valve on the water line and detects the amount of water supplied to the hot water tank;
an acquisition temperature sensor installed in the acquisition line and sensing the temperature of water received into the hot water tank;
a water outlet temperature sensor installed in the hot water tank and sensing the temperature of water flowing into the water outlet line; and
Instantaneous heating type water heater including a control panel installed in the main body and controlling the voltage provided to the heater in accordance with the input signal of the input panel, the acquisition flow rate sensor, the acquisition temperature sensor, and the sensor signal of the water outlet temperature sensor. The method according to claim 1,
It further comprises a normally open type solenoid valve arranged on the upper side of the hot water tank, which is normally maintained in an open state and closed only when hot water is discharged,
Instantaneous heating type water heater, characterized in that the inlet / outlet stainless steel ball top or stainless steel float sensor is not installed inside the hot water tank. The method according to claim 1,
It further comprises a normally open type solenoid valve arranged on the upper side of the hot water tank, which is normally maintained in an open state and closed only when hot water is discharged,
Instantaneous heating type water heater, characterized in that the inlet / outlet stainless steel ball top or stainless steel float sensor is installed inside the hot water tank. The method according to claim 1,
a pressure reducing valve installed upstream of the inlet valve on the inlet line; and
Instantaneous heating type water heater, characterized in that it further comprises a metering valve installed on the inlet valve on the inlet line. 4. The method according to claim 2 or 3,
Instantaneous heating type water heater, characterized in that it further comprises a safety valve provided at the front or rear end of the normally open type solenoid valve and opened when the internal pressure of the hot water tank rises above a set pressure. 5. The method according to any one of claims 1 to 4,
The heater is formed of one heater for keeping warm and rapid heating, or
The heater is an instantaneous heating type water heater, characterized in that it comprises a primary heating heater installed on the inner lower side of the hot water tub, and a secondary heating heater installed on the inner upper side of the hot water tub.

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