US2011114304A1PendingUtilityA1
Method for the hydraulic compensation and control of a heating or cooling system and compensation and control valve therefor
Est. expiryJul 25, 2028(~2 yrs left)· nominal 20-yr term from priority
Inventors:Urs Keller
F24D 2220/0264F24D 19/1015
65
PatentIndex Score
0
Cited by
0
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0
Claims
Abstract
The invention relates to a method for the hydraulic compensation and control of a heating and cooling system. The system comprises at least one pump and a plurality of lines respectively comprising a compensation and control valve and a load. The method for compensation and control consists of the following steps: a control value for each of the compensation and control valves is determined for which the predetermined discharge values are reached in each line; a control range of each compensation and control valve is defined as the difference between the determined control value and the position when the compensation and control valve is closed; and the signal control range of one each of the compensation and control valves is represented in the newly defined control range.
Claims
exact text as granted — not AI-modified1 . A method for the hydraulic balancing of a branch of a heating or cooling system, wherein the branch comprises a balancing and regulating valve and a load, the balancing and regulating valve being adapted to receive regulating signals within a signal regulating range, the method comprising:
(a) causing a medium to flow through the branch; (b) determining a maximum setpoint value for the balancing and regulating valve, at which a predetermined throughflow value is reached in the branch, wherein the predetermined throughflow value is lower than a maximum possible throughflow value through the branch; (c) restricting the operating range of the balancing and regulating valve to the range between the determined maximum setpoint value and a position in which the balancing and regulating valve is closed; and (d) mapping the signal regulating range of the balancing and regulating valve onto the thus restricted operating range.
2 . The method as claimed in claim 1 , wherein the balancing and regulating valve has an equal-percentage valve characteristic curve.
3 . The method as claimed in claim 1 , wherein the balancing and regulating valve has a valve characteristic curve which has an at least approximately linear profile in a first, lower operating range and which has an equal-percentage profile in a second, upper range.
4 . The method as claimed in claim 3 , wherein, if the expression
(
α
α
100
)
indicates the quotient of an arbitrary setpoint value α and the maximum setpoint value α 100 and n gl indicates the characteristic equal-percentage number, the valve characteristic curve, in a first range of
(
α
α
100
)
lower than the reciprocal value of n gl is a linear characteristic curve and, in the remaining second range of
(
α
α
100
)
higher than the reciprocal value of n gl , is an exponential characteristic curve:
k
V
α
α
100
≤
1
n
gl
=
k
V
100
·
α
α
100
·
n
gl
·
1
-
n
gl
k
V
α
α
100
≥
1
n
gl
=
k
V
100
·
n
gl
·
(
α
α
100
-
1
)
5 . The method as claimed in claim 4 , wherein n gl is higher than 4.5.
6 . A method for hydraulic balancing of a heating or cooling system comprising at least one pump and a plurality of branches, the method comprising:
causing a medium to flow through the heating or cooling system at a predetermined pump capacity; and carrying out the method as claimed in claim 1 for each of the branches.
7 . The method as claimed in claim 6 , wherein an electronic control unit is provided, in which the maximum setpoint values of the individual balancing and regulating valves are stored, and by means of which, after said values have been stored, setting signals are transmitted to the balancing and regulating valves in order to transmit a maximum value of the valve opening.
8 . A balancing and regulating valve for a heating or cooling system, adapted to be mounted as a balancing and regulating valve in a branch in series with a load, the balancing and regulating valve being configured such that a maximum setpoint value can be set so that a predetermined throughflow value in the branch is achieved,
the valve being configured such that the maximum setpoint value of the valve can be set as a part value with respect to a complete opening of the valve, wherein the operating range of the valve can be set as the range between the set maximum setpoint value and the position when the valve is closed, and wherein the valve has a signal regulating range adapted to be mapped onto the thus defined operating range.
9 . The balancing and regulating valve as claimed in claim 8 , comprising a control unit in which the maximum setpoint value can be input manually or electrically/electronically for defining the operating range of the balancing and regulating valve as arranged between the set maximum setpoint value and the position when the balancing and regulating valve is closed, and wherein the control unit is designed for mapping the signal regulating range of the balancing and regulating valve onto the thus defined operating range.
10 . A device for the hydraulic balancing of a heating or cooling system, comprising at least one pump and a multiplicity of branches, wherein at least one branch has a balancing and regulating valve as claimed in claim 8 and a load,
the device comprising a control unit in which the maximum setpoint values, delivered manually or electrically/electronically by said balancing and regulating valves, can be input for defining the operating range of each of these balancing and regulating valves as the range between the set maximum setpoint value and the position when the balancing and regulating valve is closed, wherein the control unit is designed, further, for mapping the signal regulating range of each balancing and regulating valve onto the thus defined operating range.
11 . The device as claimed in claim 10 , wherein each of these balancing and regulating valves has a valve characteristic curve so that the overall characteristic curve of such a branch which arises from the load and from the balancing and regulating valve is linear.
12 . The device as claimed in claim 10 , wherein at least one such balancing and regulating valve has an equal-percentage valve characteristic curve.
13 . The device as claimed in claim 10 , wherein at least one such balancing and regulating valve has a valve characteristic curve which has an at least approximately linear profile in a first, lower operating range and which has an equal-percentage profile in a second, upper range.
14 . The device as claimed in claim 13 , wherein, if the expression
(
α
α
100
)
indicates the quotient of the setpoint value α and the set maximum setpoint value α 100 and n gl indicates the characteristic equal-percentage number, the valve characteristic curve of said balancing and regulating valve, in a first range of
(
α
α
100
)
lower than the reciprocal value of n gl , is a linear characteristic curve and, in the remaining second range of
(
α
α
100
)
higher than the reciprocal value of n gl , is an exponential characteristic curve:
k
V
α
α
100
≤
1
n
gl
=
k
V
100
·
α
α
100
·
n
gl
·
1
-
n
gl
k
V
α
α
100
≥
1
n
gl
=
k
V
100
·
n
gl
·
(
α
α
100
-
1
)
.
15 . The device as claimed in claim 14 , wherein the value of the balancing and regulating valve n gl is higher than 4.5.
16 . The method as claimed in claim 15 , wherein ngl is higher than 5.
17 . The method as claimed in claim 5 , wherein ngl is higher than 5.Cited by (0)
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