U.S. patent application number 12/746731 was filed with the patent office on 2011-01-06 for device for control room temperature of each room adapted to heating environment and its method.
Invention is credited to Sung-Duk Cho, Nam-Soo Do.
Application Number | 20110000973 12/746731 |
Document ID | / |
Family ID | 40718312 |
Filed Date | 2011-01-06 |
United States Patent
Application |
20110000973 |
Kind Code |
A1 |
Do; Nam-Soo ; et
al. |
January 6, 2011 |
DEVICE FOR CONTROL ROOM TEMPERATURE OF EACH ROOM ADAPTED TO HEATING
ENVIRONMENT AND ITS METHOD
Abstract
The present invention relates to a device for control room
temperature of each room adapted to heating environment that allows
a temperature control system to be adapted by itself to heating
environment (quantity of heat of a heating source, magnitude of
load, difference between setting temperature and room temperature)
by reflecting the changes in the heating environment and data
obtained by previous heating into the control, and reduces
unnecessary energy consumption by controlling the quantity of heat
of a boiler at the minimum required level. In order to achieve the
above, the present invention includes: a boiler that creates
combustion heat, exchanges the heat with heating water, and then
circulates the heating water through each heating load; one or more
heat pipes that are provided to heating positions; heating control
valves that is provided to allow or stop the circulation of the
heating water through the heat pipes; an individual room controller
that makes it possible to set interior temperature for each room,
and converts the set interior temperature into return water control
temperature and then outputs the return water control temperature;
a valve controller that controls quantity of heat of the boiler by
integrating the return water control temperature transmitted from
one or more individual room controllers and outputs a control
signal to the boiler to maintain the highest return water control
temperature of the return water control temperature required by the
individual room controller; and a valve actuating unit that turns
on/off the valve control valve according to the control signal of
the valve controller.
Inventors: |
Do; Nam-Soo; (Seoul, KR)
; Cho; Sung-Duk; (Suwon-si, KR) |
Correspondence
Address: |
Hershkovitz & Associates, LLC
2845 Duke Street
Alexandria
VA
22314
US
|
Family ID: |
40718312 |
Appl. No.: |
12/746731 |
Filed: |
October 22, 2008 |
PCT Filed: |
October 22, 2008 |
PCT NO: |
PCT/KR08/06242 |
371 Date: |
September 22, 2010 |
Current U.S.
Class: |
237/8A ;
237/81 |
Current CPC
Class: |
G05D 23/1934 20130101;
Y02B 30/70 20130101; F24D 19/1015 20130101; Y02B 30/762
20130101 |
Class at
Publication: |
237/8.A ;
237/81 |
International
Class: |
F24D 19/10 20060101
F24D019/10; F24D 19/00 20060101 F24D019/00 |
Foreign Application Data
Date |
Code |
Application Number |
Dec 7, 2007 |
KR |
10-2007-0127042 |
Claims
1. A device for control room temperature of each room adapted to
heating environment, comprising: a boiler that creates combustion
heat, exchanges the heat with heating water, and the circulates the
heating water through each heating load; one or more heat pipes
that are provided to heating positions; heating control valves that
is provided for the heat pipes to allow or stop the circulation of
the heating water through the heat pipes; an individual room
controller that makes is possible to set interior temperature for
each room, and converts the set interior temperature into return
water control temperature and then outputs the return water control
temperature; a valve controller that controls the quantity of heat
of the boiler by integrating the return water control temperature
transmitted from one or more individual room controllers and
outputs a control signal to the boiler to maintain the highest
return water control temperature of the return water control
temperature required by the individual room controller; and a valve
actuating unit that turns on/off the valve control valve according
to the control signal of the valve controller.
2. A method of controlling room temperature of each room adapted to
heating environment, comprising: outputting return water control
temperature of each room after converting interior temperature set
by a user through an individual room controller into the return
water control temperature of each room; controlling the quantity of
heat of a boiler to maintain the highest control from the return
water control temperature of each room received by the valve
controller; multiplying a value, which is obtained by subtracting
return water control temperature of a room to be controlled from
the return water control temperature of the boiler, by a control
calibrating constant, and then determining an object value for
control of the interior temperature by subtracting the above value
from the set interior temperature; performing heating by opening a
heating control valve until the present interior temperature
increases higher than the valve closing temperature, which is set
in advance, when the present interior temperature is lower than the
valve opening temperature that is set in advance, in the individual
room controller; detecting a difference in temperature between the
temperature when the interior temperature of each room is higher
than the valve opening temperature in the heating, in the
performing of heating, and the temperature when the interior
temperature of each room is lower than the valve closing
temperature in stopping the heating; and controlling
opening/closing of the heating control valve at a renewal object
value for control which is obtained by reflecting the difference in
temperature to the return water control temperature of the previous
control cycle, before performing again heating, as the present
interior temperature becomes lower than the valve opening
temperature that is set in advance.
3. The method of controlling room temperature of each room adapted
to heating environment according to claim 2, wherein the return
water control temperature of the boiler is set to the highest
return water control temperature of the return water control
temperature of each room, in the performing of heating.
Description
TECHNICAL FIELD
[0001] The present invention relates to a device for control room
temperature of each room adapted to a heating environment and its
method in an individual room temperature control system, more
specifically to a device for control room temperature of each room
adapted to a heating environment that allows a temperature control
system to be adapted by itself to a heating environment (quantity
of heat of a heating source, magnitude of load, difference between
setting temperature and room temperature) by reflecting changes in
the heating environment and data obtained by previous heating into
the control, and reduces unnecessary energy consumption by
controlling the quantity of heat of the heating source (boiler) at
the minimum required level by integrating the requirements of
individual rooms.
BACKGROUND ART
[0002] In general, heating apparatuses implement apparatuses that
supply warm water to a heating system, etc., which burn fuel
therein, such as gas, heat heating water using combustion heat
created by the combustion, and then heat the inside of a room by
circulating the heating water through heat pipes provided in the
floor, etc. in the room, or supply hot water using the heating
water.
[0003] Control methods for maintaining the interior temperature at
user-desired setting temperature in this heating apparatuses can be
divided into a method of turning on/off a heating apparatus by
measuring the interior temperature, a method of turning on/off a
heating apparatus by measuring the temperature of water in a heat
pipe, and a method of continuing operation for a time set by a user
and stopping the operation for a time set in advance.
[0004] The method of controlling the heating temperature while
measuring the interior temperature in the above methods turns
on/off the heating apparatus by comparing the temperature set by
the user with the interior temperature measured by a temperature
sensor attached to an interior temperature controller, and a
process that is controlled by the method is shown in FIG. 1.
[0005] FIG. 1 is a graph illustrating a change process of the
interior temperature according to a method of controlling a heating
apparatus in the related art.
[0006] First, a user sets the desired interior temperature using an
interior temperature controller provided in a room, in which the
set interior temperature becomes T_set, and heating stop
temperature T_off and heating start temperature T_on are set within
a predetermined range above and below the interior temperature
T_set set by the user.
[0007] The heating stop temperature T_off and heating start
temperature T_on are values inputted in advance in the interior
temperature controller, and for example, when the user set desired
interior temperature at 25.degree. C., the heating stop temperature
T_off may be set to 26.degree. C. and heating start temperature
T_on may be set to 24.degree. C. to have a range of 1.degree. C.
above and under the set temperature.
[0008] As the heating system operates, the interior temperature
increases, in which the interior temperature is detected by a
temperature sensor attached to the interior temperature controller.
When the interior temperature detected by the temperature sensor
reaches the heating stop temperature T_off of 26.degree. C., the
user judges that the desired temperature is achieved and stops the
heating apparatus.
[0009] In this case, although heat transfer to heat pipes embedded
in the floor is stopped by the stop of the heating apparatus, the
interior temperature drops after increasing up to temperature
higher the heating stop temperature T_off of 26.degree. C. (e.g.
27.degree. C.), because heat stored in the floor continues to be
discharged into the interior air. It is called overshoot when the
interior temperature increases more than the heating stop
temperature T_off, as described above.
[0010] The interior temperature drops due to the stop of the
heating apparatus, and when the interior temperature reaches the
heating start temperature T_on of 24.degree. C., the heating
apparatus is restarted.
[0011] In this case, although the interior temperature drops due to
the stop of the heating apparatus, the interior temperature
re-increases after dropping to temperature (e.g. 23.degree. C.)
lower than the heating start temperature T_on. It is called
undershoot when the interior temperature drops less than the
heating start temperature T_on.
DISCLOSURE OF INVENTION
Technical Problem
[0012] There was a problem in that the up-down change range
increases to 23.degree. C..about.27.degree. C. from the interior
temperature T_set of 25.degree. C. set by the user, when the
overshoot and undershoot are generated as described above, such
that it is difficult to provide pleasant environment.
[0013] That is, since methods of controlling the interior
temperature in the related art uniformly performs control
regardless of changes in the heating environment, the range of the
interior temperature increasing/decreasing from the set temperature
is large and the user feels the same changes in temperature without
resolving the problem even though the control is repeated. Further,
since individual room control systems in the related art controls
the interior temperature by only turning on/off valves, without
controlling quantity of heat of heating sources, there was a
problem in that differences in the temperature are large and energy
is unnecessarily consumed correspondingly.
[0014] The present invention is designed to overcome the above
problems, it is an object of the present invention to provide a
device for control room temperature of each room adapted to a
heating environment that converts interior temperature set by an
individual room controller into needed quantity of heat and
controls a boiler to supply needed quantity of heat by integrate
the interior temperature, using a valve controller, in which the
individual room controller controls valves to turn on/off by
comparing the quantity of heat supplied by the boiler from the
valve controller with quantity of heat needed for each room and
then determining the changes in the heating environment, in order
to be adapted by itself to the heating environment, and a method of
controlling room temperature of each room adapted to the heating
environment.
Technical Solution
[0015] In order to achieve the above objects of the present
invention, a device for control room temperature of each room
adapted to a heating environment, includes: a boiler that creates
heat, exchanges the heat with heating water, and then circulates
the heating water through each heating load; one or more heat pipes
that are provided to heating positions; heating control valves that
is provided to allow or stop the circulation of the heating water
through the heat pipes; an individual room controller that makes it
possible to set the interior temperature for each room, and
converts the set interior temperature into return water control
temperature and then outputs the return water control temperature;
a valve controller that controls the quantity of heat of the boiler
by integrating the return water control temperature transmitted
from one or more individual room controllers and outputs a control
signal to the boiler to maintain the highest return water control
temperature of the return water control temperature required by the
individual room controller; and a valve actuating unit that turns
on/off the valve control valve according to the control signal of
the valve controller.
[0016] Further, in order to achieve the above objects of the
present invention, a method of controlling room temperature of each
room adapted to heating environment, includes:
[0017] outputting return water control temperature of each room
after converting an interior temperature set by a user through an
individual room controller into the return water control
temperature of each room; controlling the quantity of heat of a
boiler to maintain the highest control from the return water
control temperature of each room received by the valve controller;
multiplying a value, which is obtained by subtracting the return
water control temperature of a room to be controlled from the
return water control temperature of the boiler, by a control
calibrating constant, and then determining an object value for
control of the interior temperature by subtracting the above value
from the set interior temperature; performing heating by opening a
heating control valve until the present interior temperature
increases higher than valve closing temperature, which is set in
advance, when the present interior temperature is lower than valve
opening temperature that is set in advance, in the individual room
controller; detecting a difference in temperature between the
temperature when the interior temperature of each room is higher
than the valve opening temperature in the heating, in the
performing of heating, and the temperature when the interior
temperature of each room is lower than the valve closing
temperature in stopping the heating; and controlling
opening/closing of the heating control valve at a renewal object
value for control which is obtained by reflecting the difference in
temperature to the return water control temperature of the previous
control cycle, before performing again heating, as the present
interior temperature becomes lower than the valve opening
temperature that is set in advance.
[0018] The return water control temperature of the boiler is set to
the highest return water control temperature of the return water
control temperature of each room in the performing of heating.
Advantageous Effects
[0019] The present invention is advantageous in achieving more
effective control, as compared with individual room control systems
that do not controlling a heat source, by reducing the differences
in temperature that repeatedly occur, using a method of controlling
a heating system that is adapted to a heating environment by
itself, and in saving energy by reducing unnecessary waste of
energy.
BRIEF DESCRIPTION OF DRAWINGS
[0020] FIG. 1 is a graph illustrating a change process of the
interior temperature according to a method of controlling a heating
apparatus in the related art.
[0021] FIG. 2 is a view illustrating the configuration for
achieving the present invention.
[0022] FIG. 3 is a flowchart illustrating a method of controlling
room temperature of each room adapted to heating environment
according to the present invention.
BEST MODE FOR CARRYING OUT THE INVENTION
[0023] The configuration and operation of a preferred embodiment of
the invention is described hereafter in detail with reference to
the accompanying drawing.
[0024] FIG. 2 is a view illustrating the configuration for
achieving the present invention.
[0025] In the accompanying drawings, a boiler 10 creates combustion
heat by burning gas or oil in a combustion chamber, exchanges the
heat with heating water in a heat exchanger disposed in the boiler
10, heats each room by supplying the heating water to heat pipe
unit 20:20a, 20b, 20c.about.20n provided in each room through a
heating water discharge pipe 60, returns the heating water of which
the temperature has dropped to a low temperature through a heating
water return pipe 70, heats again the heating water at high
temperature by exchanging heat with combustion heat, and then
supplies the heating water to the heat pipe unit 20, which is
repeated.
[0026] The fuel, such as gas or oil, which is supplied to create
combustion engine while burning in the boiler 10 is supplied, for
example, through a proportional control valve (not shown).
Accordingly, it is possible to adjust the quantity of heat created
in the boiler 10 by controlling the amount of opening of the
proportional control valve to adjust the amount of fuel that is
supplied into the combustion chamber.
[0027] The heat pipe unit 20 may be composed of one or more heat
pipes for each room.
[0028] Heating control valves V1.about.Vn that opens/closes the
heat pipes to circulate or stop the heating water are disposed at a
side of the heat pipes. The heating control valves V1.about.Vn is
controlled to open/close by a valve actuating unit 40 that is
controlled by a valve controller 30.
[0029] Individual room controllers 50: 50a, 50b, 50c.about.50n each
have a function of enabling a user to set desired interior
temperature for each room and are equipped with an interior
temperature detecting unit (not shown) to control the interior
temperature at desired level by detecting the interior temperature.
One individual room controller 50 is provided for each room, but is
not limited thereto and a plurality of room controllers may be
provided in a large room. Further, one room controller may be
provided to control a plurality of rooms, if necessary.
[0030] The valve controller 30 controls quantity of heat of the
boiler 10 by integrating information on the quantity of heat
transmitted from the individual room controllers 50 while
controlling the heating control valves V1.about.Vn to turn on/off
by controlling the valve actuating unit 40.
[0031] When interior heating temperature is set by a user, the
individual room controller 50 converts the set temperature into
boiler return water control temperature and transmits it to the
valve controller 30 and the valve controller 30 correspondingly
controls the quantity of heat of the boiler 10 by integrating the
return water control temperature of each room required by the
individual room controller 50, in which the quantity of heat of the
boiler 10 is controlled to the quantity of heat where the highest
temperature of the return water control temperature of each room
set by the individual room controller 50 can be maintained.
[0032] When the boiler 10 is in operation and the practical boiler
control return water temperature is higher than the return water
control temperature required by each room, the heating control
valve is turned off by reflecting the above such that overshoot is
prevented.
[0033] The boiler 10 is controlled to create the quantity of heat
that is needed to maintain the return control water temperature set
by the user in each room, such that it is possible to prevent
unnecessary waste of fuel.
[0034] FIG. 3 is a flowchart illustrating a method of controlling
room temperature of each room adapted to a heating environment
according to the present invention.
[0035] First, as a user sets desired interior temperature for each
room by operating the individual room controller 50, the individual
room controller 50 calculates return water control temperature of
each room for keeping the interior temperature at the set
temperature and transmits the calculated result to the valve
controller 30.
[0036] The valve controller 30 integrates the return water control
temperature of each room transmitted from the individual room
controller 50 and then controls the heating control valves
V1.about.Vn to turn on/off while controlling the boiler 10 to
maintain the highest return water control temperature of each room
(S2).
[0037] The individual room controller 50 calculates an object value
for control of the interior temperature to maintain the interior
temperature set by the user for each room as follow,
T(n)=set interior temperature-Ks.DELTA.t
where T(n) is a new object valve for control according to the
interior temperature set by the user, K is a control calibration
constant, and .DELTA.t is boiler return water control
temperature-return water control temperature of the room to be
controlled.
[0038] The individual room controller 50 controls the heating
control valve V1.about.Vn to turn on/off such that the object value
for control T(n) calculated as described above is maintained.
[0039] The individual room temperature 50 determines whether the
present interior temperature is lower than valve opening
temperature Temp_ON (S3) and then opens the heating control valve
of the corresponding room to start heating when it is lower than
the valve opening temperature Temp_ON (S4).
[0040] Thereafter, it is determined whether the present interior
temperature increases higher than valve closing temperature
Temp_OFF to determine whether the heating is achieved up to the set
temperature (S5), and then the heating control valve of the
corresponding room is closed to stop the heating when it is
determined that it is higher than the valve closing temperature
Temp_OFF (S6).
[0041] After one cycle from the heating start to the heating stop
as described above is made, the overshoot higher than the set
temperature when the heating is started and the undershoot lower
than the set temperature, that is, a difference in temperature from
the set temperature is calculated (S7), it is determined whether
the present interior temperature is lower than the valve opening
temperature Temp_ON (S8), the object value for control of the
boiler is renewed by reflecting the difference in temperature when
it is determined that it is lower than the valve opening
temperature Temp_ON (S9).
[0042] That is, the renewal object value for control is calculated
as follow,
T(n)=T(n-1 )+correction value
where T(n-1) is the object value for control of the previous
cycle.
[0043] Meanwhile, after the determining of whether the present
interior temperature is lower than the valve opening temperature
Temp_ON is performed in the individual room controller 50 in step
S3 (S3), when it is determined that the present interior
temperature is higher than the valve opening temperature Temp_ON,
it is determined whether the present interior temperature increases
higher than the valve closing temperature Temp_OFF (S 10).
[0044] When it is determined that the present interior temperature
is not higher than the valve closing temperature Temp_OFF, heating
water continues to be supplied to the corresponding room until it
is determined that it increases higher than the valve closing
temperature Temp_OFF. Thereafter, as the present interior
temperature becomes higher than the valve closing temperature
Temp_OFF, the heating is stopped by closing the heating control
valve (S11) and the process return to step S3 that determines
whether the present interior temperature is lower than the valve
opening temperature Temp_ON.
[0045] It is preferable to change the object value for control as
described above when the set temperature is changed by the user,
and after the control according to the first object value for
control is performed, the second object value for control is
renewed in consideration of changes in the difference of the
overshoot, undershoot, and the boiler return water control
temperature obtained during the above control.
[0046] Further, it is possible to control the boiler at quantity of
heat, which is suitable for heating each room, by changing return
water control temperature of the boiler on the basis of the
quantity of heat required by the individual room controller and
controlling the quantity of heat of the boiler.
INDUSTRIAL APPLICABILITY
[0047] As described above, when the present invention is applied to
a temperature control system of individual rooms, the present
invention can make it possible to not only make a temperature
control system adapted by itself to the heating environment, but
prevent unnecessary waste of energy.
* * * * *