LT6048B - Convection space heating system - Google Patents

Abstract

The invention relates to heating equipment and can be used for space heating. Convection space heating system consisting of a convector with fan that is placed in the fan frame, electronic converter and thermo sensor, in which electronic converter (3) has a semiconductor chip, which is programmed in such a way that electrical current from a converter to a fan (1) changing gradually depending on the temperature values presented in an inverter (3) from a thermo sensor (4).

Description

The invention relates to heating equipment and is intended for space heating.

There are many types of heating devices known, including convectors, which are described in various sources of information and used in industry and household. One of the convector heaters is disclosed in JP11083046. Convection electric heater is also described in WO2011078731. However, these units are no longer up to date with sanitary requirements as they are highly dehumidifying and reducing comfort in the living room or other areas, as well as evaporating moisture from walls. In this way, such devices adversely affect human health and can only be adapted to a specific area.

Floor heating units are also used for space heating. A device of this type is described in JP 2251020. This device emits pleasant and comfortable heat, but the heat is distributed unevenly, resulting in a difference in temperature at the bottom and top of the room.

At present, floor convector space heating systems (floor convectors) belong to modern and modern heating technology. In recent years, floor convectors have been used in a variety of applications in buildings and facilities, both in the business sector (hotels, restaurants), the public sector (hospitals, outpatient clinics, residential services) and the private sector (dwellings, apartments, saunas). These heating systems are often used in modern building and indoor architecture, where lightweight building and wall constructions are often made from non-traditional materials, eg. of glass. Such operating conditions, high aesthetics and ergonomic requirements encourage heating professionals to look for efficient, compact and compatible with interior heating devices.

However, the efficiency of individual convectors without the use of additional heat dissipation units is insufficient and requires relatively high heat energy costs. Therefore, convectors are often installed in a system with electric fans, which dissipate preheated air indoors, thus ensuring higher heating efficiency.

The closest to the proposed technical solution is the system described in the 2011 catalog of VERANO konwektor (address: Vetterow g., 20-277 Lublin, Poland). In this heating system the fans have at least two operating positions (on / off) which are selected by mechanical switching on or off. Fan switches are installed together with a temperature sensor, which activates the fan when a set air temperature limit is reached. The fan speed controller is three-level, which, in addition to the on / off positions, has an intermediate position where the fan operates at reduced speed. The main disadvantage of the speed controller in this equipment is that when the fans are running at full capacity (when the set temperature limit is reached or when the fan is turned on mechanically) the heat coming from the convector is dissipated too quickly and the heating system needs to use extra energy. This is due to the fact that due to structural defects of the unit the fan speed can not be adjusted evenly.

The object of the invention is to provide a convector room heating system in which the speed of the fans is regulated evenly, and the resulting heat from the convector is evenly distributed at the desired speed.

This objective is achieved by the new convector space heating system described in this application. The system consists of a heater, a fan, a fan frame, an electronic converter and a thermal sensor. The electronic converter has a semiconductor chip (chip) and is programmed so that the electrical current from the converter to the fan is changed evenly and depending on the temperature value supplied to the electronic converter from the thermal sensor.

The invention is illustrated by the following drawings:

FIG. 1 is a general diagram of a heating system.

FIG. 2 shows an outline of the convector fan housing indicating its dimensions.

FIG. Fig. 3 shows the temperature dependence of the operation of the electronic converter.

FIG. Figure 4 shows an electrical diagram of the heating system.

The heating system consists of fan or fan unit 1, fan frame 2, electronic converter 3, thermo sensor 4, convector 5. The unit also has a 12 V electrical connector (3.5 mm) for power supply and a thermo sensor connector (3.5 mm) . A 12 V current is wired to the electronic converter and from there to the fans.

The dimensions of the fan frame 2 are chosen to provide minimal resistance to the air currents flowing through the fans. Detailed dimensions are given in Figure 2 of the fan frame. 2. For maximum efficiency, the frame is cut using laser metalworking technology. The frame can consist of three, six or nine seats for fans. The number of fans is selected depending on the type and dimensions of the convector heat exchanger so as to ensure maximum air circulation, i.e. the external dimensions of the unit must be close to those of the heat exchanger.

Fans 1 can be 6W, 12cm in diameter with bearings that are low noise and have a lifetime of at least 20,000 MTBF. The fans 1 are mounted in the fan frame 2 using heat-resistant sealants which also perform vibration damping. The electronic converter 3 consists of a semiconductor chip and other electronic components. The electronic converter 3 is mounted inside the fan frame 2. The electronic converter is programmed by recording to a semiconductor chip software that allows the voltage supplied to the fan 1 to be varied evenly by converting the temperature of the convector heat exchanger read into the corresponding voltage at the converter output. A schematic diagram of the temperature dependence of the supply voltage to the fan 1 of the electronic converter is shown in FIG. 3. However, other values can be selected and programmed by the electronic converter. For example, in lounges where quiet operation is a priority, slower fan speeds can be programmed, although this slightly increases the warm-up time of the room since the convector starts operating. It is also possible to program the electronic converter values depending on the time of day. The temperature sensor 4 is an electronic converter that converts the ambient temperature value into an electronic signal provided by the electronic converter 3. The temperature sensor 4 must measure a temperature between 50 and +150 degrees, a measurement accuracy of +/- 1%, a minimum measurement time of about chemical effects.

The electrical heating scheme (Fig.4) uses the following alphanumeric designation of the elements:

R- resistor with variable or constant impedance;

C- capacitor;

D- diode;

L- inductance coil;

U- processor;

IC- Fixed positive voltage stabilizer;

Q- bipolar transistor;

X- DC power terminals; DC_MOTOR- DC motor / fan.

The heating system is controlled according to the following principle. A voltage divider is formed from the resistor and the analog temperature sensor, which supplies the microcontroller with a temperature-varying voltage. Depending on this voltage, different values of the high-frequency latitude signal (PWM) are formed at the output of the microcontroller. The signal is further amplified and transmitted to the circuit of the electronic key and inductor to form a Buck topology voltage converter. At the output of the circuit, a temperature-dependent voltage is formed for the fans.

The advantage of this heating system is that it adjusts the speed of the fans evenly and depending on the changing temperature, the heat dissipated is also uniform. In this way the efficiency of the convectors can be increased 3-5 times. One of the major advantages of this unit over similar units is that it efficiently utilizes the residual heat of the convector by switching off the heat generator (heat carrier) and turning the heat generator on to quickly reach the required temperature in the room.

Claims (1)

Definition of the Invention A convector room heating system consisting of a convector with a fan mounted in a fan frame, an electronic converter and a thermal sensor, characterized in that the electronic converter (3) has a semiconductor chip (chip) programmed to supply electrical power from the converter to the fan ( 1), varying evenly depending on the temperature value supplied to the electronic converter (3) from the thermal sensor (4).