DE102010024741A1 - Method for controlling temperature of room of building, involves measuring air temperature and wall temperature of room, and controlling temperature of room depending on measured wall temperature and measured air temperature - Google Patents

Abstract

The method involves measuring air temperature and wall temperature of a room by an ambient air-side aligned measurement unit (11) and a wall-side aligned measurement unit (12) of a measurement device (10). Temperature of the room is controlled depending on the measured wall temperature and the measured air temperature. Sensed room temperature is formed as controlled variable for the room temperature depending on a sum of weighted wall temperature and weighted wall temperature, where the sensed room temperature is the temperature sensed by human. Independent claims are also included for the following: (1) a measurement device comprising an ambient air-side aligned measurement unit (2) a room temperature controlling arrangement comprising a measurement device.

Description

The invention relates to a method for controlling a room temperature of a room according to the preamble of claim 1.

In addition, the invention relates to a measuring device for measuring a room temperature for a control device comprising at least one first room air side aligned measuring unit for measuring a room air temperature according to the preamble of claim 5.

Furthermore, the invention relates to a room temperature control arrangement for controlling a room temperature, comprising a room wall and at least one sensor for measuring at least one temperature according to the preamble of claim 10.

Method for measuring and controlling a room temperature as a function of a certain predetermined temperature as a controlled variable, and the corresponding control systems are well known. In this case, the current room temperature is always measured and compared with the controlled variable, whereupon the corresponding temperature control measures are performed.

Furthermore, it is known that the temperature sensation of humans depends on only about 50% of the surrounding air temperature. The surface temperature of the walls surrounding the people, that is, the wall temperature, has almost as much influence on the temperature perception of the person. The walls influence the heat flow of the environment to humans via radiation. Depending on the design of the building, there is sometimes a considerable time delay between an increase in the wall temperature and an increase in the room air temperature when heating the room. The room air temperature reaches the desired temperature value much faster than the wall temperature, so that the heater already down regulates or shuts off, although for people the perceived room temperature still seems too cold. This is a common problem especially in old buildings with poor insulation of the walls.

The invention has for its object to provide a method and a corresponding measuring device and room temperature control arrangement, which provide an optimized room temperature control, which cause a pleasant room temperature matched to the perception of a person, that is the perceived room temperature.

This is achieved by the objects with the features of claim 1, claim 5 and claim 10 according to the invention. Advantageous developments can be found in the dependent claims.

The method according to the invention for controlling a room temperature of a room comprises the steps of measuring at least one room air temperature and regulating the room temperature as a function of the measured room air temperature, wherein at least one wall temperature is measured in addition to the room air temperature so that the room temperature is additionally regulated as a function of the measured wall temperature.

By the method according to the invention it is possible to define a perceived temperature as a controlled variable for the temperature control. The perceived temperature results from a combination of the wall temperature and the room air temperature. If the regulation of the room temperature no longer depends solely on the room air temperature, heating or cooling is continued until the wall temperature has also adapted to the controlled variable.

In an advantageous embodiment of the method according to the invention, it is provided that the measured room air temperature is weighted for the control.

Likewise, it is provided in an advantageous embodiment of the method according to the invention that the measured wall temperature is weighted for the control.

By weighting the measured room air temperature and / or the measured wall temperature, it is possible, depending on demand, to add more weight to one or the other temperature. The perceived room temperature is thus individually adaptable to the wishes of a consumer. This results in an individual control of the temperature control.

In another embodiment of the method according to the invention, it is provided that from a sum of the weighted room air temperature and the weighted wall temperature a perceived room temperature is formed as a controlled variable for the room temperature. An example weighting for determining the sensed temperature is calculated using the following formula: T _feel = a · T _wall + b · T _air , where T _{feel is} the sensed temperature, T _{wall is} the measured wall temperature, T _{air is} the measured room air temperature, and a and b are weighting factors. The heater is controlled according to this formula with a target specification, this target specification is the combination of the measured Wall temperature and the measured room air temperature results. If the wall temperature is to be more closely included in the perceived room temperature, the factor a should be greater than b. In a building with better insulated walls, the wall temperature does not deviate so much from the room air temperature, so that the ratio of factors a and b is more balanced.

The invention further includes the technical teaching that in a measuring device for measuring a room temperature for a control device comprising at least a first room air side aligned measuring unit for measuring a room air temperature, is provided that at least one second, wall side aligned measuring unit is provided for measuring a wall temperature , so that the room temperature is controlled as a function of the measured room air temperature and the measured wall temperature by the method according to the invention.

In an advantageous embodiment of the measuring device according to the invention, a regulator unit is provided, with a section for forming a sensed room temperature from a sum of the weighted room air temperature and the weighted wall temperature. The perceived room temperature represents the controlled variable of the temperature control. Advantageously, the perceived room temperature controlled variable is formed with an individually adaptable weighting of the wall and room air temperature. The weight can be distributed as desired to the measured temperatures.

In a further advantageous embodiment of the measuring device according to the invention, a housing unit is provided for jointly receiving the first measuring unit and the second measuring unit. Accordingly, it is possible to arrange the measuring units for measuring the room air temperature and the wall temperature as a compact unit in a room, advantageously on a wall of the room.

Therefore, in a still further advantageous embodiment of the measuring device according to the invention is provided that at least one fastening unit, in particular a positive, non-positive and / or cohesive fastening unit is provided for attaching the housing unit to a room wall. The fastening unit can be configured, for example, screwed, glued, nailable or the like.

In an advantageous embodiment of the measuring device according to the invention, at least one contact element for attaching the at least one second measuring unit to the room wall is provided. By means of such a contact element, a thermally close contact is to be made, so that it is ensured that the second measuring unit actually measures the wall temperature and not the temperature just before the wall. For this purpose, the measuring unit is clamped or pressed against the wall, for example with the aid of a spring or another tensioning element. If there is a slightly thicker layer of poorly heat-conducting plaster or wallpaper on the wall, it makes sense to bring the measuring unit into direct contact with the wall. This is for example an extension of the measuring unit into the interior of the wall, for example in the form of a rod or a sleeve, so that in fact only the wall temperature is measured.

The invention also includes the technical teaching that in a room temperature control arrangement for regulating a room temperature, comprising a room wall and at least one sensor for measuring at least one temperature, it is provided that the at least one sensor is designed as a measuring device according to the invention. In an advantageous embodiment it is provided that a plurality of measuring devices are used to further optimize the regulation of the sensed temperature. In this case, the measuring devices can be coupled to one another, for example via radio transmission, and thus convey a differentiated image of the radiation properties of the surrounding wall and also make clear certain cold bridges to the outside world.

With the method according to the invention, the measuring device and the room temperature control arrangement, in particular the following advantages are realized.

The perceived room temperature is included in the temperature control, so that the difference between indoor air temperature and wall temperature, which affects a feel-good climate of a room effectively balanced. This means that not only a measured wall temperature, but also a measured room air temperature is taken into account in the room temperature control.

Furthermore, a measuring device according to the invention and a room temperature control arrangement are inexpensive to produce and can also be retrofitted in an existing room temperature control system. The temperature control of a room can be individually adapted to the needs of the residents.

The drawings illustrate several embodiments of the invention and show in the figures:

1 a schematic cross-sectional view of an embodiment of a measuring device according to the invention with a detail magnification A; and

2 a schematic cross-sectional view of another embodiment of a measuring device according to the invention.

The 1 shows a schematic cross-sectional view of an embodiment of a measuring device according to the invention 10 with an enlarged detail A. The measuring device shown here 10 for measuring a room temperature T _space for a control device comprises a first, room air side aligned measuring unit 11 for measuring a room _air temperature T _air and a second, wall-side aligned measuring unit 12 for measuring a wall temperature T _wall . The measuring unit 10 thus corresponds to a temperature measuring unit. According to the invention, the room temperature T _{room is} regulated as a function of the measured room _air temperature T _air and the measured wall temperature T _wall . A detailed description of the method according to the invention follows in the description of 3 ,

Furthermore, a regulator unit 19 with a portion for forming a sensed room temperature T _feel from a sum of the weighted room _air temperature T _air and the weighted wall temperature T _wall . The controller unit 19 is via a line with the first measuring unit 11 and the second measuring unit 12 connected. Alternatively, a radio link of these components is conceivable.

The controller unit 19 , the first measuring unit 11 and the second measuring unit 12 be from a housing unit 13 recorded together. The controller unit 19 is in this embodiment via a line with the measuring units 11 and 12 connected. Alternatively, a radio transmission of the measured values is possible.

The attachment of the measuring device 10 or the housing unit 13 on a room wall 15 via a fastening unit 14 (see detail enlargement A), which ensures a positive as possible, non-positive and / or cohesive attachment. Thus, the rear wall of the measuring device is flush with the room wall 15 and is fixed by screws in this position, for example.

For an exact temperature measurement is as direct as possible contact of the second measuring unit 12 necessary with the wall. This is done by means of a contact element 17 for attaching the second measuring unit 12 to the room wall 15 produced.

The measuring device shown here by way of example 10 is a part of a room temperature control arrangement, not shown here, for controlling a room temperature T _room , which is on the room wall 15 is arranged and has at least one sensor for measuring at least one temperature. In the embodiment shown here, the sensor according to the invention as a measuring device 10 executed.

In the detail enlargement A of 1 are the attachment unit 14 , the contact element 17 and the second measuring unit 12 shown enlarged. The fastening unit 14 is here as a screw connection of the housing unit 13 with the room wall 15 educated. The contact element 17 is here as a clasp of the second measuring unit 12 trained, so that this to the room wall 15 is pressed. There is a corresponding bracket for this 17a intended. In embodiments in which the room wall 15 is covered by a poorly heat-conductive plaster layer, is an additional contact of the measuring unit 12 with the room wall 15 , Such an arrangement is in the 2 shown and described.

Furthermore, it is possible to attach operating elements to the measuring device so that it is possible for a consumer to actively intervene in the temperature control. However, such controls are not shown here.

The 2 shows a schematic cross-sectional view of another embodiment of a measuring device according to the invention 10 , The embodiment shown here corresponds to the design of the contact element 17 and the second, wall-side measuring unit 12 already in the 1 described embodiment. The housing unit 13 is on the room wall 15 attached. The first room-side measuring unit 11 is used to measure the room _air temperature T _air and is designed as a temperature sensor. The second, wall-side measuring unit 12 is used to measure the wall temperature T _wall and is thermally close to the room _wall for precise measurement 15 coupled.

In the 2 is the measuring device 10 on a room wall 15 with a heat-conducting coat plaster 16 arranged with low thermal conductivity. To a direct thermal contact between the room wall 15 and the second measuring unit 12 that is, to enable a reliable temperature measurement, is the second measuring unit 12 by means of a temperature sensor 18 extended in the form of a probe. The temperature sensor penetrates 18 deeper into the room wall 15 one. This temperature sensor 18 indicates in the embodiment 2 a good heat conducting material in the form of a rod or a sleeve. A good heat-conducting material is for example copper or a copper alloy. The measurement of the wall temperature T _wall then takes place on the end face of this temperature sensor 18 inside the wall. The temperature sensor 18 sensibly penetrates so deep into the room wall 15 A, that the wall temperature T _{wall is} no longer affected by the temperature inside the building, but not yet by the outside temperature of the building.

The direct contact between plaster 16 and housing unit 13 the measuring device 10 represents a spring mechanism 17b of the contact element 17 for sure. For this purpose, the rear wall of the measuring device 10 to the room wall 15 pressed.

• – Messen mindestens einer Raumlufttemperatur T_Luft (Schritt S1);
• – Messen mindestens einer Wandtemperatur T_Wand (Schritt S2);
• – Gewichtung der gemessenen Raumlufttemperatur T_Luft (Schritt S3a) und der gemessenen Wandtemperatur T_Wand (Schritt S3b);
• – Bildung der gewichteten Summe aus der gewichteten Raumlufttemperatur T_Luft und der gewichteten Wandtemperatur T_Wand (Schritt S3); und
• – Regeln der Raumtemperatur T_Raum in Abhängigkeit der gemessenen Raumlufttemperatur T_Luft (Schritt S4).

The inventive method for room temperature control thus comprises the steps:

• - Measuring at least one room air temperature T _air (step S1);
• Measuring at least one wall temperature T _wall (step S2);
• - Weighting of the measured room _air temperature T _air (step S3a) and the measured wall temperature T _wall (step S3b);
• Forming the weighted sum of the weighted room _air temperature T _air and the weighted wall temperature T _wall (step S3); and
• - Regulation of the room temperature T _room as a function of the measured room air temperature T _air (step S4).

By the method according to the invention, it is possible to define a sensed temperature T _feel as a controlled variable for the temperature control. The perceived temperature T _feel results from the weighted sum of the wall temperature T _wall and the room air temperature T _air . The weighting is carried out, for example, according to the following formula: T _feel = a · T _wall + b · T _air , where a and b are weighting factors. Depending on requirements, in this case the weight more on the wall temperature T _wall or the room air temperature T _air .

In step S4, the room temperature T _room is controlled up or down by a certain temperature amount ΔT, which is a function of the sensed temperature T _feel .

Claims (10)

Method for regulating a room temperature (T _room ) of a room, comprising the steps of measuring at least one room _air temperature (T _air ) (S1) and regulating the room temperature (T _room ) (S4) as a function of the measured room air temperature (T _air ), characterized in that in addition to the room _air temperature (T _air ) at least one wall temperature (T _wall ) is measured (S2) so that the room temperature (T _room ) is additionally regulated as a function of the measured wall temperature (T _wall ) (S4). A method according to claim 1, characterized in that the measured room _air temperature (T _air ) is weighted for the control (S3a). A method according to claim 1 or 2, characterized in that the measured wall temperature (T _wall ) is weighted for the control (S3b). Method according to one of the preceding claims 1 to 3, characterized in that from a sum of the weighted room _air temperature (T _air ) and the weighted wall temperature (T _wall ) a sensed room temperature (T _feel ) is formed as a controlled variable for the room temperature (S3). Measuring device ( 10 ) for measuring a room temperature (T _room ) for a control device comprising at least one first room air-side aligned measuring unit ( 11 ) for measuring a room air temperature (T _air ) (S1), characterized in that at least one second, wall-side aligned measuring unit ( 12 ) is provided for measuring a wall temperature (T _wall ) (S2), so that the room temperature (T _room ) is regulated according to the measured room _air temperature (T _air ) and the measured wall temperature (T _wall ) according to a method of the preceding claims 1 to 4 (S4), Measuring device ( 10 ) according to claim 5, characterized in that a control unit ( 19 ) is provided, with a portion for forming a sensed room temperature (T feel) from a sum of the weighted room air temperature (T air) and the weighted wall temperature (T Wand) as a controlled variable. Measuring device ( 10 ) according to claim 5 or 6, characterized in that a housing unit ( 13 ) for collectively recording the first measuring unit ( 11 ) and the second measuring unit ( 12 ) is provided. Measuring device ( 10 ) according to one of claims 5 to 7, characterized in that at least one fastening unit ( 14 ), in particular a positive, non-positive and / or integral fastening unit ( 14 ), for securing the housing unit ( 13 ) on a room wall ( 15 ) is provided. Measuring device ( 10 ) according to one of claims 5 to 8, characterized in that at least one contact element ( 17 ) for attaching the at least one second measuring unit ( 12 ) to the room wall ( 15 ) is provided. _Room temperature control arrangement for controlling a room temperature (T _room ), comprising a room wall ( 15 ) and at least one sensor for measuring at least one temperature, characterized in that the at least one sensor as a measuring device ( 10 ) is executed according to one of the preceding claims 5 to 9.

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