BG109366A - Water heater - Google Patents

Abstract

The water heater is intended for use in everyday life, e.g. for heating water for the household, hotels, catering establishments, and other buildings and structures. It is particularly useful in remote areas where there is no permanent power supply. It is fir for heating relatively small quantities of water using alternative heating sources with a higher operation efficiency of the heating media. It allows low cost water heating. The water heater comprises a water-bearer (1) situated in a heat-insulated outer cover (2) with an inlet water pipe (4) and an outlet water pipe (5). In the water-bearer there is mounted a coil (8) whose inlet pipe union (9) and outlet pipe union (10) are arranged in the upper part of the water-bearer and are connected respectively to the bottom turn (13) of the coil (8) through a delivery pipe (14) and to the top turn (15) through a discharge pipe (16). Around the water-bearer (1) there is shaped a closed chamber (18) for a second heating medium from a second cover-mantle (17) equipped with respective unions for delivery and discharge of the heat medium. In the bottom part of the water-bearer, there is a foolproof electric heater (12). A temperature pick-up is provided too.

Description

TECHNICAL FIELD

The invention relates to a boiler, mainly for domestic use, which will find application for domestic hot water, as well as in the hotel, catering and other buildings and facilities where water heating is required. The boiler is particularly suitable for use in remote locations where electricity is not available or at least not permanently available. Allows the use of various energy sources and low cost water heating.

BACKGROUND OF THE INVENTION

A boiler is known, which includes a water tank located in an outer shell. There is a space filled with thermal insulation between the shell and the water tank. The heating water enters the water tank through an inlet pipe mounted at the bottom of the boiler. In the water tank is a coil, one upper end, which is horizontally pushed through the insulation and the shell and ends with an inlet nozzle for the heat carrier. The other, lower end of the coil is pushed horizontally through the thermal insulation and the shell and ends with an outlet nozzle for the coolant. A sensor connected to the control system is installed in the water tank. There is also an electric heater in the water tank whose outlets are outside the shell. The electric heater is equipped with a thermostat and an anode protector. For the use of hot water, a vertical outlet hot water pipe is installed, which has an open end located at the top of the water tank. Typically, - - φ for a heat carrier moving in the coil, the г водардндндтардггггрдгрдггрд вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода вода As it moves down ** n0 'serTantin ··' the coolant cools and warms the water contained in the water tank. When the heating of the water by the coolant in the coil is insufficient, as reported by the sensor, the control system switches on the electric heater for water heating. The well-known boiler does not allow to heat small volumes of water using alternative energy sources. There is a slow heating of the water, a significantly higher consumption of the coolant in the coil due to the fact that while it is warm, it already heats the u-heated layer of water, and at the lower end of the coil, where the water is cold in the water heater, the heating is much slower and ineffective. This necessitates frequent use of the electric heater to heat the water, resulting in high power consumption.

SUMMARY OF THE INVENTION

It is an object of the invention to provide a boiler that also allows at least two alternative sources of heating to be used in boilers with relatively small volumes of heated water, increasing the efficiency of the heat carriers and providing low cost water heating.

f

The problem is solved by a boiler comprising a water tank located in an outer shell, between which the water tank has a space filled with thermal insulation. An inlet pipe and an outlet pipe are installed in the water tank and a coil is located, one end of which, ending with an inlet coolant nozzle, is passed through the thermal insulation and the jacket. The other end of the coil, ending with an outlet nozzle for the heat carrier, is also threaded through the thermal insulation and the jacket. A sensor is mounted in the water tank as well as an electric heater whose outlets are outside the shell. According to the invention, the inlet nozzle for the heat carrier and the outlet nozzle for the heat carrier are located at the top of the water tank. Between the inlet nozzle and the lower coil of the coil chuck, get hold '':

* ··. ί ··· · ······ ··· · · * · the pipe. Between the top coil of the coil and the outlet nipple0, * 1 / 1m .....

outlet pipe. At the same time, a second casing is formed around the wall of the water tank - a mantle. It is located at a distance from the water tank and forms an externally enclosed chamber for a second coolant equipped with an inlet cuff and an outlet casing respectively.

It is appropriate for the coil and the mantle-enclosed chamber to be provided with corresponding independent pumps for the coolant.

The electric heater must be equipped with a © thermostat and anode protector.

The sensor should be located at the top of the water tank.

The boiler according to the invention makes it possible to heat small volumes of water using two alternative energy sources, which is due to the formation of a mantle for a third energy source. The water heats up quickly, ie. with high efficiency of the heat carrier in the coil due to its supply directly to its lower end, where the cold water is in the water heater. The electric heater is extremely rarely used to heat water. Low cost water heating has been achieved.

EXPLANATIONS OF THE FIGURES Attached

The invention is illustrated in the accompanying drawings, where:

FIG. 1 is a schematic sectional view through a boiler according to the invention;

FIG. 2 is an A-A view of FIG

EXAMPLES FOR THE IMPLEMENTATION OF THE INVENTION

According to the exemplary embodiment shown, the boiler includes a water tank (1) located in an outer shell (2). Between it and the water tank (1) there is space filled with topsodation'®). IN**:

··· ·; · · · · ...... .L. . · · An inlet pipe (4) and ..... are installed at the bottom of the water tank.

outlet pipe (5). The inlet (4) and outlet (5) pipes have open ends (6, 7) arranged at different heights, with the end (7) of the outlet pipe (5) above the end (6) of the inlet pipe (4). In the water tank (1) there is a coil (8), one end of which, ending with an inlet nozzle (9) for heat carrier, is passed through the thermal insulation (3) and the outer shell (2). The other end of the coil, terminating with an outlet nozzle (10) for the heat carrier (8), is also driven through the thermal insulation (3) and the outer shell (2). A temperature sensor (11) is mounted in the water tank (1). Typically, the sensor (11) is connected to a control system (not shown). The control system can be of any known type, including manual switching, according to the sensor readings. The control system should be able to switch to an electric water heater (12) mounted at the bottom of the water tank (12). It has leads beyond the outer shell (2). The inlet nozzle (9) for the heat carrier as well as the outlet nozzle (10) for the heat carrier are located at the top of the water tank (1). There is a guide tube (14) between the inlet nozzle (9) and the lowest coil (13) of the coil (8). Between the top coil (15) of the coil (8) and the outlet nozzle (10), there is a discharge pipe (16). At least around the wall of the water tank (1) a second sheath is formed - a mantle (17). It is located away from the water tank (1) and forms an externally closed chamber (18) for a second heat carrier. This closed chamber (18) is provided, respectively, with an inlet sleeve (19) and an outlet sleeve (20). They are located externally on the water tank.

In order to ensure the movement of the heat carriers in the coil (8) and in the chamber (18) enclosed by the mantle (18), independent pumps (not shown) are provided for the coil (8) and the chamber (18).

'· · · · · · · · · · ·

It is advantageous that the electric heater (12) is solid. «With ·, .., thermostat and anode protector (not shown).

Suitably, the sensor (11) is located at the upper end of the water tank (1). It may be installed elsewhere without affecting the spirit of the invention.

SUMMARY OF THE INVENTION

The water to be heated is fed through the inlet pipe (4) into the water tank (1). After filling it, a heat carrier, usually in a solar collector (not shown), is supplied to the coil (8) through the inlet nozzle (9) for the coolant. It descends at the lower end and moves from the bottom up the coil (8), then exits the outlet port (10) to reheat. In normally warm sunny days, it is sufficient to heat the water in the boiler, the radiated heat from the heat carrier heated in the solar collector. When the heating of the heat carrier by the solar heat is insufficient, an additional energy source, such as the electric heater (12) and / or the other, second heat carrier, such as boiler water, which is supplied through the inlet nozzle (19) is included in the sensor report (11). ) and is driven through the outlet cuff (20). Thus, when combined with three energy carriers, extremely economical heating of the water in the boiler can be obtained. Depending on the place of use and the climatic conditions, the main energy source can be selected so that it is relatively rare to require electricity.

When heated water is consumed, it passes through the outlet pipe (5) and is fed to the mixer for use.

Claims (4)

Patent Claims 1. A boiler comprising a water tank located in an outer shell, between which the water tank has a space filled with thermal insulation, wherein an inlet pipe and an outlet pipe are mounted in the water tank and a coil is provided, one end of which ends with an inlet nozzle for a heat carrier is driven through the thermal insulation and the sheath, and the other end of the coil, ending with an outlet nozzle for the heat carrier, is also driven through the thermal insulation and the sheath, with a sensor as well as electrical in the water tank. a ski heater whose outlets are outside the shell, characterized in that the inlet nozzle (9) for the heat carrier and the outlet nozzle (10) for the heat carrier are located at the top of the water tank (1), between the inlet nozzle (9) and the most the lower coil (13) of the coil (8) has a guide tube (14), and between the uppermost coil (15) of the coil (8) and the outlet nozzle (10) there is a discharge pipe (16), at least about the wall of the water reservoir (1) is formed by a second casing - mantle (17), located at a distance from the water reservoir (1) and forming an outer it closed chamber (18) for the second coolant, equipped respectively with an inlet nozzle mantle (19) and outlet orifice mantle (20). The boiler according to claim 1, characterized in that corresponding independent heat pump pumps are provided to the coil (8) and the chamber (18) enclosed by the mantle (17). The boiler according to claim 1 or 2, characterized in that the electric heater is provided with a thermostat and an anode protector. Boiler according to one of Claims 1, 2 or 3, characterized in that the sensor (8) is located at the upper end of the water tank.