JPH05312388A - Ceiling radiation room cooler/heater - Google Patents

Abstract

PURPOSE:To obtain an efficient and comfortable radiation environment by variably setting an area of a radiation panel. CONSTITUTION:Cold/warm water from a heat exchanger 7 is individually supplied to a plurality of radiation panels 1 through a plurality of valves 4. A controller 10 selectively opens the valves 4 based on a detection signal from a heat ray sensor 8, most efficiently radiation-room cool/heat a resident 9, sets most comfortable panel temperature Tp adapted for a present indoor temperature T1 based on a signal from a temperature sensor 11, and controls a temperature of the cold/warm water.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ceiling radiant cooling / heating apparatus which creates a comfortable environment by radiant cooling or radiant heating.

[0002]

2. Description of the Related Art Conventionally, this type of ceiling radiation cooling and heating system has been
A plurality of radiation panels installed on the ceiling surface are simultaneously operated to perform radiant cooling and heating at a preset temperature in the entire room.

[0003]

In such a conventional example, since the radiation panel area is fixed and the heating panel is always heated and cooled in a constant area regardless of the position of the person in the room, A place that does not exist is heated and cooled at the same time,
The energy loss was great. Moreover, since the panel temperature is set independently of the ambient temperature in the room, there is a problem that comfort of cooling and heating is impaired.

The present invention has been made in view of the above conventional problems, and an object of the present invention is to make a radiation panel area variable and to obtain an efficient and comfortable radiation environment. To provide.

[0005]

In order to solve the above-mentioned problems, the present invention provides a plurality of radiant panels installed on the ceiling surface, the surface temperature of which is changed by supplying cold / hot water, and a plurality of valves for each radiant panel. Cold and hot water supply means for individually supplying cold and hot water via, a human body position detection sensor arranged on the surface of the radiation panel to detect the position of a person present in the room, a temperature sensor for detecting the ambient temperature in the room, and The most comfortable panel suitable for the room temperature based on the signal from the temperature sensor while selecting the radiation panel to be operated based on the signal from the human body position detection sensor and opening only the valve corresponding to the radiation panel. And a control device for setting the temperature and controlling the temperature of the hot and cold water.

[0006]

According to the present invention, the valve is selectively opened on the basis of the detection signal from the heat ray sensor so that only the necessary radiation panel close to the person in the room is operated. Therefore, the radiation panel area can be changed. Therefore, energy loss can be eliminated as compared with the conventional case of heating and cooling a constant radiation panel area. Also, since the most comfortable panel temperature suitable for the room temperature is set based on the signal from the temperature sensor to control the temperature of the hot and cold water, the panel temperature can be set independently of the conventional room temperature. The radiation environment will be more comfortable than when it is done.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIGS. 1A and 1B, the ceiling radiant cooling and heating apparatus used in this embodiment has a plurality of (four in this embodiment) radiant panels 1 for performing radiant cooling and heating. .. Each radiation panel 1 is installed along the ceiling surface, and a pipe 2 to which cold / hot water from the heat exchanger 7 is supplied is built therein. The inlet 2a of each pipe 2 is individually communicated with a branch pipe 3 in which a valve 4 is interposed, and these branch pipes 3 supply cold / hot water of a heat exchanger 7 via a main pipe 6 in which a brine pump 5 is interposed. It communicates with the mouth. On the other hand, the outlet 2b of each pipe 2 communicates with the cold / hot water recovery port of the heat exchanger 7 from another branch pipe 3'through the main pipe 6 '. As a result, the cold and warm water from the heat exchanger 7 is circulated and supplied to the four radiation panels 1 by individual routes.

Each panel surface 1 of the above four radiation panels 1
A heat ray sensor 8 which is a human body position detection sensor is attached to each of a. Each heat ray sensor 8 detects the position of the person 9 who is in the room and transmits the signal to the control device 10 through the connection line L. On the other hand, the control device 1
0 is installed on the indoor wall surface, and the radiation panel 1 near the position of the occupant 9 based on the signal from the heat ray sensor 8
Is selected, and only the valve 4 corresponding to the selected radiation panel 1 is opened. In addition, the control device 1
A temperature sensor 11, such as a thermistor, for detecting the temperature is attached to the front surface of 0. Control device 1
0 also has a function of setting the most comfortable panel temperature suitable for the room temperature based on the signal from the temperature sensor 11 and controlling the temperature of the cold / hot water.

Next, the operation will be described with reference to FIGS. First, in step n1 of FIG. 5, when the heat ray sensor 8 detects the position of the person in the room and transmits the detection signal to the control device 10, the process proceeds to step n2, and the control device 10 detects the human body based on the detection signal. A radiant panel 1 (one or a plurality of sheets) that is close to the radiant influence can be selected, and only the valve 4 corresponding to the radiant panel 1 is opened. As a result, the cold / hot water from the heat exchanger 7 is supplied from the opened valve 4 only to the selected radiation panel 1 to efficiently heat or cool the vicinity of the person 9 in the room. In this way, since the radiation panel area can be changed, compared with the conventional case where a constant radiation panel area is heated and cooled, the heating and cooling of the place where the occupant 9 does not exist is stopped to save energy. Loss can be eliminated.

Next, at step n3, the control device 10 detects the room temperature T ₁ based on the signal from the temperature sensor 11, and at step n4, the most appropriate panel temperature obtained in relation to the room temperature T ₁ is obtained. Set Tp. FIG. 2 shows the optimum panel temperature Q ₁ at any _one of the indoor temperatures T ₁ , T ₂ and T ₃ in relation to comfort. When the comfortable panel temperature Tp is set, the process proceeds to step n5,
It is determined whether or not the current operation of the radiant panel 1 is cooling, and when it is not cooling, the process proceeds to step n10, and the temperature of the hot / cold water is controlled so that the set comfortable panel temperature Tp is obtained. When it is determined in step n5 that the air conditioner is cooling, the process proceeds to step n6 and it is determined whether the comfortable panel temperature Tp is equal to or lower than the dew condensation temperature Tc. And
When the comfortable panel temperature Tp is higher than the dew condensation temperature Tc, the process proceeds to step n10, and the same cold / hot water temperature control is performed.
That is, when the comfortable panel temperature Tp is higher than the dew condensation temperature Tc, the temperature of the cold / hot water is controlled by the comfortable panel temperature Tp, and compared with the conventional example in which the panel temperature is set independently of the room temperature. Therefore, comfortable radiant cooling and heating can be performed.

Further, in the present embodiment, the above step n6 is performed.
The comfortable panel temperature Tp is equal to or lower than the dew condensation temperature Tc.
If it is determined that the steps are n7 to n, which is a dew condensation prevention operation.
Moving to 9, the comfortable panel temperature Tp 'is reset. Tsuma
The other valve 4 that was not opened in step n2 above.
The radiation panel to increase the number of operating radiation panels 1
The area (cooling area) is increased (step n7). Figure 3
The room temperature T is shown in (a). ₁, T₂Comfortably at any time
Amount of cold radiation required to become Q₁In relation to comfort
In FIG. 3B, the cold radiation amount Q₁When you get
The relationship between the area of the fired panel and the panel temperature is shown. this
Based on the data of FIG. 3, the control device 10 controls the comfortable panel temperature.
Tp 'is reset, and in step n10, the comfortable panel temperature is set.
The temperature of the cold and warm water is controlled so that Tp 'can be obtained. this
The comfortable panel temperature Tp is lower than the dew condensation temperature Tc
Only in this case, expand the cooling area of the radiation panel to prevent condensation.
By setting the comfortable panel temperature Tp 'that can be stopped,
Radiant cooling becomes more comfortable.

[0012]

As described above, according to the present invention, the cold / hot water from the cold / hot water supply means is individually supplied to the plurality of radiation panels via the plurality of valves. Then, the control device selects the radiation panel to be operated based on the signal from the human body position detection sensor that detects the position of the occupant arranged on the surface of the radiation panel, and selects only the valve corresponding to the radiation panel. Since it is configured to control the temperature of the hot and cold water by opening the panel and setting the most comfortable panel temperature suitable for the room temperature based on the signal from the temperature sensor, the radiation panel area must be variable and must be close to the person in the room. It is possible to operate only the radiant panel, and it is possible to control the temperature of the cold / hot water by setting the panel temperature to an appropriate one according to the room temperature. As a result, an arbitrary panel area can be heated and cooled, or a radiation panel temperature corresponding to the room temperature can be obtained, so that an efficient and comfortable radiation environment can be obtained.

[Brief description of drawings]

FIG. 1 (a) is a schematic perspective view of a ceiling radiation cooling / heating apparatus used in an embodiment of the present invention, and FIG. 1 (b) is a schematic configuration diagram of the same.

FIG. 2 is a graph showing the relationship between comfort panel temperature and comfort in this example.

FIG. 3 (a) is a graph showing the required amount of cold radiation with respect to indoor temperature as a function of comfort, and FIG. 3 (b) is a relationship between radiation panel area and panel temperature when the same amount of cold radiation is obtained. It is a graph which shows.

FIG. 4 is a flowchart showing the operation of this embodiment.

[Explanation of symbols]

1 Radiation panel 1a Panel surface 3 Branch pipe 4 Valve 6 Main pipe 7 Heat exchanger 8 Heat ray sensor 9 Occupant 10 Controller 11 Temperature sensor T ₁ Indoor temperature Tp Comfort panel temperature

Claims (1)

[Claims] 1. A plurality of radiant panels installed on a ceiling surface, the surface temperature of which is changed by supplying cold / hot water, and cold / hot water supply means for individually supplying cold / hot water to each radiant panel via a plurality of valves, A human body position detection sensor arranged on the surface of the radiation panel for detecting the position of an occupant, a temperature sensor for detecting the ambient temperature in the room, and a radiation panel to be operated based on a signal from the human body position detection sensor. Select to open only the valve corresponding to that radiation panel, and set the most comfortable panel temperature suitable for the room temperature based on the signal from the temperature sensor to control the temperature of the hot and cold water. A ceiling radiant cooling and heating device characterized by being provided.