JPH06123432A - Operation control device for floor heating device in hot water heating system - Google Patents

Abstract

PURPOSE:To accelerate starting-up in all case for a comfortable floor heating by a method wherein a mode of rate of opening valve can be selected in response to a load. CONSTITUTION:There is provided a mode of rate of opening of a valve comprising a map 1 in which a load mode having a difference between a set temperature ts and a room temperature deg.C divided into six stages of ts+1, ts, ts-1 to ts-4 in a vertical axis and three stages of 0%, 15% and 100% of a rate of opening of a valve in a lateral axis; a map 2 divided into four stages of 0%, 15%, 70% and 100%; a map 3 divided into five stages of 0%, 15%, 30%, 50%, 70% and 100%; and a map 4 divided into six stages of 0%, 15%, 30%, 50%, 70% and 100%. A control circuit selects the mode of map 1 in the case that a heating load is the highest value and further selects the mode of map 4 in the case that a heating load is the lowest value. In addition, for example, in the case that the map 4 is selected and a rise of a room temperature is slow, the operation is shifted to map 3 having a higher load than that of map 4 and then the operation is carried out.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operation control device for a floor heating system incorporated in a hot water heating system.

[0002]

2. Description of the Related Art FIG. 2 shows a hot water heating system and a floor heating system incorporated in this system. In the figure, 1 is a heat source device, 2
Is used as a header, and hot water is distributed to the floor heating device (mat) 3 and the radiator 4 via the pipes 5 and 7 in the header 2. When only the floor heating device 3 is used, Hot water of about 60 ° C. circulates to the floor heating device 3 side, and when the radiator 4 is used at the same time, hot water of about 80 ° C. circulates. 6 is a control valve attached to the pipe 5 of the floor heating system 3, 8 is a controller, and the control valve 6 is controlled by the controller 8 under the following conditions. a. When the floor heating is operated independently and the room temperature of the room reaches the set temperature, the control valve 6 is opened for 6 minutes, closed for 14 minutes, and operated at a valve opening rate of 30%. b. When the radiator 4 is used at the same time and the room temperature in the room exceeds the set temperature, the temperature of the hot water at this time is as high as about 80 ° C, so the control valve 6 is opened for 4 minutes, closed for 16 minutes, and opened. Operate at a rate of 20%.

[0003]

However, the above-described conventional operation (control) example has the following problems.

A. The control of the operation when the radiator 4 is used at the same time is to raise the room temperature of the room where the floor heating is performed to the set temperature, and to prevent the room temperature from becoming higher than the set temperature. The temperature change of the circulating hot water due to the fluctuation of the load on the unit 4 side, the thermal conductivity based on the material of the floor finishing material, and the like are not taken into consideration. For this reason, there are drawbacks such as a different rise in floor heating each time, and a large temperature change resulting in poor comfort.

B. Since there are only several types of valve opening rates, it is not possible to handle them in detail.

An object of the present invention is to provide an operation control device for a floor heating system, which solves the above disadvantages a and b.

[0007]

The configuration of the operation control device according to the present invention is as follows.

The load mode table is set by dividing the difference between the set temperature and the room temperature into a plurality of stages, and the opening rate of the control valve is 0% to.
The valve opening rate mode table was set by dividing the number into 100% or more and the number of divisions was different. During operation, the difference ΔT between the set temperature and the room temperature was detected, and the load mode closest to this ΔT was detected. Is selected from the load mode table and Δ
When T is large, there are few stages of the valve opening rate, and when ΔT is small, there are many stages of the valve opening rate. A control for controlling the control valve by selecting the valve opening rate mode from the valve opening rate mode table. An operation control device for a floor heating device incorporated in a hot water heating system, which is provided with a circuit.

When the rate of temperature rise in the floor heating room after the start of operation is small, the usability is further improved by adding a shift circuit that shifts the valve opening rate mode from the stage of the valve opening rate to the high load side set to a small value. .

[0010]

[Operation] The following operation (control) is performed both when the floor heating system is operated independently and when the radiator is operated simultaneously.
Is done. a. The difference ΔT between the set temperature and the room temperature is detected, and the load mode closest to this ΔT is selected from the load mode table.
When T is large, the number of steps of the valve opening rate is small, and when ΔT is small, the valve opening rate mode in which the number of steps of the valve opening rate is set is selected from the valve opening rate mode table to control the control valve. b. When it is determined that the room temperature increase rate is slower than usual, the valve opening rate mode is shifted to the high load side in which the number of stages of the valve opening rate is set to be small.

[0011]

FIG. 1 is a table showing a control example of an embodiment according to the present invention, in which the ordinate represents the difference ΔT between the set temperature ts and the room temperature ° C as ts + 1, ts, ts-1 to ts-4. The load mode is divided into 6 stages, and the horizontal axis shows the valve opening ratio of 0%, 15%, 10
Map 1 divided into three stages of 0, 0%, 15%, 70
Map 2 divided into 4 stages of 0% and 100% and 0% and 15
Map 3 divided into 5 stages of%, 50%, 70%, 100% and 0%, 15%, 30%, 50%, 70%, 100
The valve opening rate mode is composed of the map 4 divided into 6 stages of%. The control circuit selects the mode of map 1 when the heating load is the largest, and selects the mode of map 4 when the heating load is the smallest. Moreover, for example, although the map 4 is selected, if the room temperature rises slowly, the map 3 with a larger load
Shift to the side and drive.

[0012]

【The invention's effect】
The effects of the present invention are as follows.

A. Since the valve opening rate mode can be selected according to the load, the start-up is quick and comfortable floor heating is possible.

B. Floor heating is possible regardless of the material of the floor finishing material.

C. Fine floor heating is possible.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a control example by a control device of the present invention as a table.

FIG. 2 is an explanatory diagram of an example in which a floor heating system is combined with a hot water heating system.

[Explanation of symbols]

 1 Heat Source Machine 2 Header 3 Floor Heating System 4 Radiator 5, 7 Piping 6 Control Valve 8 Controller

Claims (2)

[Claims] 1. The load mode table is set by dividing the difference between the set temperature and the room temperature into a plurality of stages, and the valve opening rate of the control valve is divided into a plurality of stages from 0% to 100% and the number of divisions is set. Setting different valve opening rate mode tables, detecting the difference ΔT between the set temperature and room temperature during operation,
The load mode closest to ΔT is selected from the load mode table, and when ΔT is large, the number of stages of the valve opening rate is small, and when ΔT is small, the number of stages of the valve opening rate is set to be large. An operation control device for a floor heating device incorporated in a hot water heating system, which is provided with a control circuit for controlling a control valve by selecting from a valve opening rate mode table. 2. A shift circuit for shifting the valve opening rate mode to a high load side in which the number of stages of the valve opening rate is set to be small when the rate of temperature rise in the floor heating room after the start of operation is small. An operation control device for a floor heating device incorporated in the hot water heating system described.