RU2654548C2 - Liquid preparation device - Google Patents

Abstract

FIELD: electronic equipment.

SUBSTANCE: invention relates to portable liquid preparation devices. Liquid preparation device for simultaneous heating and cooling of a liquid, including a tank for unprepared liquid, a thermoelectric transducer, a control unit, a liquid flow separation unit and a liquid preparation tank, divided into a liquid heating section and a liquid cooling section, each section being provided with an impermeable barrier adjacent to the thermoelectric transducer, and on the outer side of the upper walls of the liquid heating section and the liquid cooling section there is a liquid level control unit provided, which is a tray at the bottom of which a liquid level sensor is placed, and an air removal device made in the form of two holes symmetrically located above the said sections, while the control unit includes a controller and a liquid level control device connected thereto, located in the liquid preparation tank, and a liquid level sensor located in the unprepared liquid tank, and a compressed medium supply line connected to the pressure generating device is connected to the unprepared liquid tank.

EFFECT: invention is aimed at reducing energy costs.

6 cl, 1 dwg

Description

The invention relates to portable devices for the preparation of liquids, mainly water from sources for domestic and / or drinking water supply, and is intended for heating and cooling or heating, cooling and purifying liquids when used in domestic conditions, in summer cottages and garden plots, or in public catering establishments.

Liquid preparation devices known from the prior art can be used for heating or cooling a liquid, as well as for heating and cooling a liquid. Additionally, these liquid preparation systems may have a liquid purification function and / or a beverage preparation function.

The prior art device for the preparation of liquids designed for simultaneous heating and cooling of liquids according to patent application US 2009/0113898 [IPC F25B 21/02, publ. 05/07/2009]. The specified liquid preparation device includes two liquid preparation containers: a liquid heating tank and a liquid cooling tank, and a thermoelectric converter located between the two tanks having a heating and cooling surface. Both tanks are made in the form of two closed tanks with insulation, into which bottles with the original liquid are inserted. The tank for heating the liquid is located above the tank for cooling the liquid.

The aforementioned thermoelectric converter is a part of the liquid heating and cooling means, which is a prefabricated structure consisting of a thermoelectric converter, a heater, a condenser, the heater being connected to the heating surface of the thermoelectric converter, and the condenser to the cooling surface of the thermoelectric converter. There is refrigerant inside the condenser and heater. A tank for cooling liquid through a tube is connected to a condenser. A container for heating the liquid through the tube is connected to the heater. After the heater, an additional condenser is connected to the tube in front of the tank for heating the liquid to carry out additional condensation of the refrigerant. The device also has a fan, which is necessary for cooling an additional condenser.

The fluid preparation device operates as follows.

In containers for heating and cooling the liquid, bottles with the original liquid are installed. During operation of the thermoelectric converter, heat is transferred from the heating surface to the heater, where the refrigerant is located, which at the same time heats up and passes into steam. Steam through a tube connected to the tank of heated liquid enters the tank for heating the liquid, heat is transferred from the refrigerant vapor to the walls of the tank, and then through the walls of the bottle to the liquid, and accordingly it is heated, while the refrigerant goes into the liquid state and then the same pipe along which the steam passes through an additional condenser returns to the heater. At the same time, the process of cooling the liquid. Due to the operation of the thermoelectric converter, the refrigerant is cooled in the condenser. The refrigerant enters the tank for cooling the liquid, heat is transferred from the liquid to the refrigerant through the walls of the bottle and, accordingly, it is cooled. In this case, the refrigerant heats up, passes into steam and returns to the condenser through the tube. Upon reaching the set temperature, one of the bottles or both bottles are removed by the consumer from the containers of heated and cooled liquids.

From the above it is seen that the means of energy transfer, due to which the heating and cooling of the liquid is carried out, is the refrigerant. Because of this, the device transfers energy (heating and cooling process) in two stages. The first stage is heating and cooling the refrigerant, the second stage is heating and cooling the liquid in the tanks of heated and cooled liquid by contacting the refrigerant with the walls of the bottles.

This energy transfer is the main disadvantage of the device according to patent application US 2009/0113898, since the refrigerant must be heated to a temperature above the desired temperature of the liquid. This is necessary to reduce the energy loss of the refrigerant as it moves through the tubes, and leads to inefficient use of the energy generated by the thermoelectric converter.

In addition, when in the pipes connected to the heater and the condenser, the refrigerant vapor collides with the refrigerant in the liquid state, heat exchange occurs and the temperature of the refrigerant decreases (in the pipe connected to the heater) or increases (in the pipe connected to the condenser), which leads to loss of energy for heating or cooling.

Freon R134a is used as a refrigerant in the device according to patent application US 2009/0113898, which is undesirable since this substance is harmful to human health and damages the ozone layer.

The prior art fluid preparation device according to patent application US 2010/0018220 [IPC G01G 23/18, F25B 21/02, G05B 15/00, published 02/28/2010]. The device is intended either for heating or for cooling the liquid, depending on the requirements of the consumer.

The device according to patent application US 2010/0018220 includes a capacitance and a thermoelectric converter having a heating surface and a liquid cooling surface. An opening for supplying unprepared liquid was made in the tank, into which a thin tube was placed to divert the heated or cooled liquid for consumption. A heat transfer plate adjacent to the thermoelectric converter is adjacent to the tank. In the device according to patent application US 2010/0018220, a fan is installed to cool the adjacent surface of the thermoelectric converter. The operation of the device according to patent application US 2010/0018220 is regulated by the control unit. The control unit is a controller connected to the display panel with the switches of two modes (heating or cooling) and time and temperature indicators placed on it. All parts and elements of the device are placed in a housing with a door, which at the same time is the front wall of the housing.

The device according to patent application US 2010/0018220 works as follows. An unprepared liquid is poured into a container intended for heating or cooling a liquid through an opening for a source liquid. In the thermoelectric converter, the polarities are switched and, accordingly, the modes of heating or cooling of the liquid are changed. Using the control unit, the consumer, depending on the requirements, switches the operating mode of the device to heating or cooling the liquid. Heating or cooling of the fluid occurs. The display panel shows when the process of heating or cooling the liquid is completed. After that, the consumer receives the prepared liquid through the drain pipe.

The device according to patent application US 2010/0018220 has several disadvantages.

As mentioned earlier, the device is designed to heat or cool the liquid, however, depending on the requirements of the consumer, during the operation of the device, only one process can be carried out - heating or cooling, and it is impossible to obtain both heated and cooled liquid. When cooling the liquid, the heating surface of the thermoelectric converter will work in idle mode. In order to lower the temperature of the heating surface, a fan is used. Thus, when the liquid is cooled, the energy generated by the heating surface of the thermoelectric converter is inefficiently used. The use of a fan also increases energy costs when operating the device according to patent application US 2010/0018220.

The prior art device for the preparation of liquids according to patent US 483388 [IPC F25B 21/02, published 05/30/1986]. The fluid preparation device according to US Pat. No. 4,83388 includes a housing with a container located therein, a thermoelectric converter, heat transfer means, and a reverse osmosis liquid purification module. The tank is designed to heat or cool the liquid. A heat transfer means is installed on the outer wall of the tank. Also, a control unit is installed on the outer wall of the tank, in which the heating or cooling mode of the liquid is switched. In addition, the device contains a feed line for the source fluid connected to the input of the reverse osmosis fluid purification module. The outlet of the purified liquid of the reverse osmosis module through the supply line of the purified liquid is connected to the tank, the outlet of the drainage liquid of the reverse osmosis module is connected to the heat transfer means. The heat transfer means is a prefabricated structure consisting of a flow distributor, a copper plate, a first heat-conducting film, a thermoelectric converter and a second heat-conducting film. The flow distributor is a heat exchanger with a channel made inside, through which the drainage fluid passes. The device also contains a control panel connected to the thermoelectric converter and to the flow distributor. Depending on the requirements of the consumer, the polarity is switched in the control unit and the drainage fluid passes through the channel made in the flow distributor, either takes the heat from the tank, or gives off the heat of the tank. A heat discharge line is connected to the outlet of the heat transfer means. The supply line of heated or cooled purified liquid to the consumer, with a circulation pump installed on it, is connected to the outlet of the heated or cooled purified liquid of the tank.

The device according to patent US 483388 works as follows.

The initial liquid through the supply line of unprepared liquid enters the reverse osmosis module for liquid purification. The purified liquid through the supply line of the purified liquid enters the liquid preparation tank. The drainage liquid from the liquid purification means is supplied to the input of the heat transfer means through the drainage liquid supply line. Passing through the flow distributor, depending on the operating mode of the device, the drainage fluid either takes heat from the tank (cooling mode) or gives off heat to the tank (heating mode). Then, the purified prepared liquid enters the supply line of the purified liquid. The spent drainage fluid from the heat transfer means enters the drainage discharge line.

The main disadvantage of the device according to the patent US 483388 is the use of drainage fluid as a coolant. Since the diameter of the channel of the flow distributor is relatively small, over time, the flux of the flow distributor, as well as lines suitable for the heat transfer means and, accordingly, the channel blockage for the passage of liquid, will become clogged, which will lead to disruption of heat transfer and malfunction of the device. In addition, a heated drainage fluid enters the drainage line, which is undesirable, since elevated temperatures promote the development of bacteria in the drainage fluid.

The prior art device for the preparation of liquids designed for simultaneous heating and cooling of liquids according to patent US 2910836 [IPC F25B 21/02, F25B 29/00, H01L 35/00, publ. 11/03/1959].

The fluid preparation device according to US Pat. No. 2,910,836 consists of a housing inside which a fluid preparation container is arranged, divided into a section for heating the liquid, provided with means for exiting the heated liquid to the consumer, a section for cooling the liquid, equipped with at least one input of the initial liquid and means the outlet of the cooled liquid to the consumer, and a thermoelectric converter having a heating surface and a cooling surface located between the heated and cooled liquid sections. A temperature measurement sensor is located in the heated liquid section and is connected to a current source, which is also connected to a thermoelectric converter. The section for heating the liquid is located strictly above the section for cooling the liquid. The means for exiting the heated liquid to the consumer is located at the top of the heated liquid section. The chilled fluid outlet means to the consumer is located at the bottom of the chilled fluid section.

The liquid preparation capacity is a parallelepiped. The thermoelectric converter divides the internal volume of the liquid preparation tank into a section for heating the liquid and an equal volume section for cooling the liquid. The thermoelectric converter is made in the form of paired electrodes, between which there are through channels for the passage of fluid.

The device according to patent US 2910836 works as follows.

Through the input of the initial liquid, the initial liquid enters the section for cooling the liquid and, passing through the through channels made in the thermoelectric converter, gradually fills the entire internal volume of the tank. During operation of the thermoelectric converter, simultaneous heating and cooling of the liquid occurs. At the same time, through the through channels redistribution of liquid occurs with its partial mixing. The heated liquid rises up into the section to heat the liquid, and the cooled liquid drops down into the section to cool the liquid. If necessary, the prepared liquid enters the consumer through the means for supplying hot and chilled liquids. In case of exceeding the permissible temperature in the hot liquid section, a temperature sensor is triggered, the thermoelectric converter is disconnected from the current source.

The main disadvantage of the fluid preparation device according to US Pat. No. 2,910,836 is the mass transfer of heated and cooled liquid through the through channels located in the thermoelectric converter. In this case, the liquid with maximum temperature accumulates in the uppermost layer of the section for heating the liquid, and the liquid with minimum temperature accumulates in the lower layer of the section for cooling the liquid. Therefore, the means for exiting the heated liquid should be located in the upper part of the section for heating the liquid, and the means for exiting the chilled liquid should be located in the lower part of the section for cooling the liquid. Due to the fact that the layer of heated liquid is located only in the upper part of the section for heating the liquid, and the layer of chilled liquid is in the lower part of the section for cooling, the consumer will be able to withdraw only a small amount of liquid. Thus, both sections have a small effective volume. In addition, as the prepared fluid is withdrawn from the tank, the selected volume is immediately replaced by a portion of the unprepared fluid coming from the source. This happens uncontrollably, since at the inlet for the unprepared liquid of the device according to the patent US 2910836 there is no means for regulating the flow of unprepared liquid into the container. At this point, the unprepared liquid is mixed with the prepared liquid and a sharp change in temperature in the two communicating sections. In order for the required equilibrium to be established in the tank and the layer of warm liquid to rise up, and the layer of cooled liquid to fall down, time and additional work of the thermoelectric converter are needed.

The prior art device according to patent SU 1764094 [IPC H01L 35/02, F25B 21/02, publ. 01/19/1993], intended for simultaneous heating and cooling of a liquid, selected by the Applicant as the closest analogue.

The device consists of a container for unprepared liquid, a thermoelectric converter, a control unit and a liquid preparation tank divided into a section of a heated liquid and a section of cooled liquid, with each section being made with an impermeable partition adjacent to the thermoelectric converter. A temperature sensor is installed in the chilled fluid section, connected to a solenoid valve and a power source. The cooled liquid section is separated from the tank for unprepared liquid by a partition in which two openings are made - inlet and outlet. In this case, the inlet is blocked by a solenoid valve. The section for heated liquid is isolated from the section for chilled liquid and from the container for unprepared liquid, while the section for heated liquid has a separate entrance for unprepared liquid and an outlet for prepared liquid.

The device according to patent SU 1764094 works as follows. Unprepared liquid is poured into the container for unprepared liquid and the section for heated liquid. Moreover, the liquid must be filled in excess in the container for unprepared liquid in order to fill the section for chilled liquid. When the container and sections are full, the process of preparing the liquid begins. If the temperature in the section for chilled liquid falls below a predetermined value, the solenoid valve opens the inlet for unprepared liquid. Mass and heat transfer occurs between the chilled fluid in the chilled fluid section and the unprepared fluid in the unprepared fluid container. The temperature in the chilled fluid section rises. When a consumer selects liquid from a chilled liquid section, a container for unprepared liquid serves as a source of the volume of liquid that has been selected.

The device according to patent SU 1764094 has several disadvantages. For example, the implementation of heat and mass transfer between a section for a chilled liquid and a container for unprepared liquid, both during supercooling of a liquid in a section for chilled liquid, and during liquid withdrawal by a consumer. When mixing warm unprepared liquid with a cooled liquid while the thermoelectric converter is running, it is necessary that the temperature of the liquid is equalized in the entire volume of the section of the cooled liquid, which takes time. In addition, the device according to the patent SU 1764094 there is no tool that prevents supercooling of the liquid in the chilled liquid section. In the first and second cases, the thermoelectric converter operates almost idle, which leads to unnecessary energy costs. Also, the supply of unprepared fluid from the unprepared fluid container to the chilled fluid section is not adjustable. The fluid enters the section by gravity as it draws a certain amount of chilled fluid from it. The section for heated liquid is completely isolated from the tank for unprepared liquid. The flow of fluid into it depends entirely on the external source to which it must either be connected or the consumer must monitor the level of fluid in it.

The objective of the invention and the technical result achieved by using the invention is the development of a new compact device for the preparation of liquids, increasing the efficiency of using the heat generated by the device for heating the liquid, while reducing energy costs.

The task and the required technical result are achieved in that a liquid preparation device intended for simultaneous heating and cooling of a liquid, including a container for unprepared liquid, a thermoelectric converter, a control unit, a unit for separating liquid flows and a liquid preparation container divided into a liquid heating section and section for cooling the liquid, with each section is made with an impermeable partition adjacent to the thermoelectric converter, and on the outside on the side of the upper walls of the section for heating the liquid and the section for cooling the liquid, there is a liquid level control means, which is a pan, at the bottom of which a liquid level sensor is located, and an air exhaust means made in the form of two holes located symmetrically above these sections, while the control unit includes a controller and connected thereto means for controlling the liquid level located in the tank for preparing liquid, and a sensor for measuring the liquid level located in the tank for unprepared liquid, and a compressed medium supply line connected to the means for creating pressure is connected to the container for unprepared liquid, while the means for creating pressure can be made in the form of a compressor or a centrifugal pump. The liquid preparation device further includes a liquid purification means and an unprepared liquid supply line, wherein the input of the liquid purification means is connected to the unprepared liquid supply line, and the outlet through the unprepared liquid supply line is connected to a flow separation unit, and the device is further provided with a flow heater made in in the form of a spiral heater connected to a section for a heated liquid, and provided with means for aerating the cooled liquid connected to the section her for chilled fluid. Also, the liquid preparation device is equipped with additional means of creating pressure, made in the form of a low-power compressor, and connected to the control unit, and connected to the unit for separating liquid flows.

The figure 1 shows a block diagram of a device for preparing a liquid. In accordance with the block diagram shown in FIG. 1, the fluid preparation device includes a housing 1 with a container for unprepared liquid 2 placed therein, a liquid preparation tank 3 divided into a section for heating the liquid 4, provided with an input for the initial liquid 12 and a heated exit means liquid to the consumer 14, and a section for cooling the liquid 5, provided with an input for the initial liquid 13 and an outlet of the cooled liquid to the consumer 15, and a thermoelectric converter 6 having a heating surface 16 and a surface cooling bridge 17. As in the closest analogue, the section for heating the liquid 4 and the section for cooling the liquid 5 are made with impermeable partitions adjacent to the thermoelectric converter 6. The volumes of the two sections 4 and 5 can be equal or the volume of section 4 can be less than section volume 5. The ratio of the volumes of sections 4 and 5 is not less than 1: 2, and not more than 1:10, preferably 1 to 3. The container for unprepared liquid 2 is isolated from the tank 3.

The thermoelectric transducer 6 is located between the section for heating the liquid 4 and the section for cooling the liquid 5. The heating surface 16 is adjacent to the side wall of the section for heating the liquid 4, and the cooling surface 17 is adjacent to the side wall of the section 5 for cooling the liquid (figure 1).

The device comprises a flow separation unit 7, which comprises an unprepared liquid supply line 8, a liquid supply line to a consumer 9 and a liquid supply line to a liquid preparation tank 3. The liquid supply line 10 to a liquid preparation tank 3 is provided with a flow separation device 11, which is, for example, in the form of a tee, and connected to the inlet of the unprepared liquid 12 in the section for the heated liquid 5 and to the inlet of the unprepared liquid 13 in the section for the cooled liquid 5 (figure 1).

The device is also equipped with a means of creating pressure 22 and a supply line of compressed medium 23. A supply line of compressed medium 23 is connected to a container for unprepared liquid 2. The means of creating pressure 22 can be made in the form of, for example, but not limited to, a compressor or centrifugal pump. In the case when the means of creating pressure 22 is made in the form of a compressor, the supply line of the compressed medium 23 is designed to supply compressed gas, for example, air (figure 1). In the case when the means of creating pressure 22 is made in the form of a centrifugal pump, the supply line of the compressed medium 23 is designed to supply unprepared liquid (not shown) from the tank for unprepared liquid 2 to the liquid purification unit.

The liquid preparation device may further include a liquid purification unit (not shown) mounted on an unprepared liquid supply line.

A liquid purifier (not shown) can be performed, for example, but not limited to this, in the form of a housing comprising a layer of a filter mixture and a hollow fiber module or in the form of a housing filled with a filter mixture.

In the event that the liquid purifier is made in the form of a housing including a layer of the filter mixture and the hollow fiber module, the pressure means is made in the form of a compressor, which is necessary to displace the initial liquid from the source liquid tank through the liquid purifier of the liquid purification unit to the preparation tank 3 liquids (not provided).

In the case when the liquid purifier (not shown) is made in the form of a housing filled with a filter mixture, the pressure generating means 22 can be made in the form of a centrifugal pump, which is necessary for pumping the initial liquid into the liquid preparation tank 3.

On the outer side of the upper walls of the two sections 4 and 5, an additional means for controlling the level of liquid 18, which is a pan, at the bottom of which a liquid level sensor 19 is located, and an air vent made in the form of two holes 24 and 25 located symmetrically above section for heating the liquid 4 and above the section for cooling the liquid 5, respectively (figure 1). A flow heater is connected to the output of the section for heating the liquid 4. The outlet of the flow-through heater is connected to the outlet of the heated liquid to the consumer 14. To the outlet 15 of the section for cooling the liquid 5, a means for aerating the cooled liquid (not shown) is connected, the output of which is connected to the means for leaving the cooled liquid to the consumer. In the means for exiting the heated liquid 14, a valve is installed. A valve (not shown) is installed in the chilled fluid exit means 15.

Also, the inventive device is equipped with a control unit 21, comprising a controller and a fluid level control means 18 connected to it and a fluid level sensor 20 located in an unprepared fluid container 2 and a temperature sensor 27 installed in the section for the heated fluid 4 (figure 1). In addition, a pressure generating means 22 and a flow heater are connected to the control unit 21.

The display panel can be additionally installed in the liquid preparation device (not shown) and consists of several LEDs installed in the control unit 21 and displayed to the consumer, which identify the processes of heating, cooling, readiness for supplying the cooled liquid, the presence of liquid in the original tank, and the module resource. The display panel also contains a button for receiving heated liquid (65 ° C), a button for receiving hot liquid (100 ° C), a button for receiving chilled liquid, and a button for producing carbonated liquid.

Also, an additional means of creating pressure (not shown) can be installed in the liquid preparation device, made in the form of a low-power compressor, connected through an auxiliary supply line of a compressed medium, in this case gas, for example, air, to the liquid supply line 10.

In the framework of the distinctive features of the device for the preparation of liquid works as follows.

Unprepared liquid is poured into the container for unprepared liquid 2. When filling the container for unprepared liquid 2, the liquid level sensor 20 located in it is triggered (figure 1). The signal from the liquid level sensor 20 enters the control unit 21. At this point, the means for creating pressure 22 is launched, made, for example, in the form of a compressor (figure 1). Compressed gas, for example, air, through the supply line of the compressed medium 23, begins to flow into the container for unprepared liquid 2, displacing the unprepared liquid along the supply line of unprepared liquid 8 to the liquid supply line 10 to the liquid preparation tank 3 and then through the flow separation means 11 sections 4 and 5. If the liquid preparation device is made with a liquid purification unit, then the unprepared liquid from the tank 2 first passes to the liquid purification unit. Further, depending on the requirements of the consumer, the liquid enters either the liquid supply line 9 to the consumer or via line 10 through the flow separation means 11 simultaneously to the heated liquid section 4 and the cooled liquid section 5. When sections 4 and 5 are filled, the liquid through the openings 24 and 25 fills the liquid level control means 18, where, when in contact with the liquid, the liquid level sensor 19 is activated, the signal enters the control unit 21, which turns off the pressure generating means 22, and turns on the thermoelectric converter 6. In sections 4 and 5, using a thermoelectric transducer 6, heating and cooling of the liquid occurs. Moreover, in contrast to the closest analogue, section 5 of the tank for preparing liquid 3 is isolated from the tank for unprepared liquid 2, therefore, there is no mass transfer of liquid between them. After completion of the heating and cooling processes, the device is ready to supply the prepared liquid to the consumer. The heated liquid enters the consumer through the means for supplying the heated liquid 14, and the cooled liquid through the means for supplying the cooled liquid 15. During heating and cooling of the liquid, the LEDs responsible for indicating these processes flash on the display panel. Upon completion of the heating and cooling processes, the LEDs go into a constantly burning mode.

To obtain a heated liquid, the consumer presses the button for receiving the heated liquid. At this point, the flow heater is turned off. For receiving hot liquid the consumer presses the corresponding button. The flow heater turns on. When a heated fluid passes through a running flow heater, its temperature increases from 65 ° C to 100 ° C, that is, a second heating stage is carried out.

When the consumer presses the chilled liquid receiving button, the valve opens and the chilled liquid enters through the chilled liquid outlet means to the consumer 15. When the consumer presses the carbonated liquid receiving button, the cooled purified liquid enters the liquid carbonation means (not shown) and then through the chilled liquid outlet means to the consumer 15 .

When the liquid level in one of the sections 4 or 5 drops, the liquid level sensor 19 is activated, which sends a signal to the control unit 21. The control unit 21 turns on the pressure generating means 22 and opens the valve 26. Since the valve 26 is open, the liquid enters both sections immediately, however, filling the section where the liquid level is higher due to the resistance of the liquid, unprepared liquid begins to flow into the section where the liquid level is lower. As soon as the section with the lower liquid level is full, the liquid level sensor 19 is activated and the control unit 21 turns off the means for creating pressure 22.

In the closest analogue, when the chilled liquid is taken from the chilled liquid section, the chilled liquid is diluted with a warmer unprepared liquid and the temperature of the liquid in the chilled liquid section increases. To equalize the temperature in the volume of the section, time and additional energy are required, which is spent on the operation of the thermoelectric converter. The same thing happens with strong cooling of the fluid in the chilled fluid section. In addition, the device according to the closest analogue does not have any means of preventing overheating of the liquid in the section for heated liquid. Because of this, the temperature of the heated liquid can reach a boiling point, and the liquid can gradually evaporate. In the absence of fluid in the heated fluid section, the heating surface of the thermoelectric converter may overheat and fail. Also, the heated liquid section is completely isolated from the tank for unprepared liquid. The flow of fluid into it depends entirely on the external source to which it must either be connected or, as mentioned earlier, the consumer must monitor the level of fluid in it.

Unlike the closest analogue, in the inventive device, this drawback is eliminated due to the design of the liquid preparation tank and the flow separation unit.

As indicated above in the description of the closest analogue, during the selection of the chilled liquid by the consumer, the unprepared liquid from the container for the unprepared liquid begins to flow into the section for the cooled liquid. Unprepared and chilled liquids are mixed, which increases the temperature in the chilled liquid section and requires additional work of the thermoelectric converter. The present invention eliminates the need to supply unprepared fluid to sections 4 and 5 during a consumer’s withdrawal of prepared fluid. The regulated supply of unprepared liquid to sections 4 and 5 is carried out immediately after the consumer stops taking the prepared liquid, which reduces the waiting time until the prepared liquid is received and reduces the energy consumption for heating and cooling the liquid.

In the present description of the invention presents a preferred embodiment of the invention. Changes can be made in it, within the scope of the claimed formula, which makes it possible to widely use it.

Claims (6)

1. A liquid preparation device intended for simultaneous heating and cooling of a liquid, including a container for unprepared liquid, a thermoelectric converter, a control unit, a liquid flow separation unit and a liquid preparation unit divided into a liquid heating section and a liquid cooling section, each the section is made with an impermeable partition adjacent to the thermoelectric converter, and on the outside of the upper walls of the section for heating the liquid and section for cooling A liquid level control means is located, which is a pan with a liquid level sensor at the bottom, and air exhaust means made in the form of two holes symmetrically above these sections, while the control unit includes a controller and level control means connected to it liquid located in the liquid preparation tank, and a liquid level measuring sensor located in the tank for unprepared liquid, and to the tank for unprepared liquid A compressed fluid supply line connected to a pressure generating means is provided. 2. The device according to p. 1, characterized in that the means of creating pressure can be made in the form of a compressor or a centrifugal pump. 3. The device according to claim 1, characterized in that it further includes a liquid purifier and an unprepared liquid supply line, wherein the input of the liquid purifier is connected to an unprepared liquid supply line, and the outlet through an unprepared liquid supply line is connected to a flow separation unit. 4. The device according to claim 1, characterized in that it is further provided with a flow heater made in the form of a spiral heater connected to a section for a heated liquid. 5. The device according to p. 1, characterized in that it is further provided with means for aerating the cooled liquid connected to the section for the cooled liquid. 6. The device according to p. 1, characterized in that it is equipped with additional means of creating pressure, made in the form of a low-power compressor, and connected to the control unit, and connected to the unit for separating fluid flows.

Images