Apparatus and a system for controlling temperature in a plurality of zones in a building
First Claim
1. Apparatus for controlling temperature in a plurality of zones in a building, the apparatus comprising:
- a housing defining a hollow interior region and comprising;
a plurality of inlet ports located in the housing and communicating with the hollow interior region of the housing, the inlet ports being adapted for connecting to respective return ducts communicating with the respective zones, and for receiving return air therethrough returned through the respective return ducts from the respective zones and for accommodating the return air to the hollow interior region,a plurality of outlet ports located in the housing and communicating with the hollow interior region of the housing, the outlet ports being adapted for connecting to respective flow ducts communicating with the respective zones, and for accommodating flow air therethrough from the hollow interior region for delivery through the flow ducts to the respective zones,an air circulating means located in the hollow interior region of the housing for circulating air through the hollow interior region from the inlet ports to the outlet ports,a heat exchange means located in the hollow interior region of the housing,a plurality of mutually isolated heat exchange paths formed in the hollow interior region of the housing extending through the heat exchange means and terminating in the respective outlet ports of the housing for accommodating the flow air therethrough from the air circulating means to the outlet ports,a plurality of mutually isolated bypass paths corresponding to the respective heat exchange paths and terminating in the respective outlet ports for accommodating the flow air from the air circulating means to the corresponding respective outlet ports with the flow air bypassing the corresponding ones of the heat exchange paths,a plurality of return air temperature sensing means located in the housing adjacent the respective inlet ports for sensing the temperature of the return air from the respective zones, anda plurality of primary valve means corresponding to the respective heat exchange paths, each primary valve means having only a single primary air flap located between the air circulating means and the heat exchange means adjacent the corresponding one of the heat exchange paths and the corresponding one of the bypass paths and being selectively operable in either one of a first state and a second state for selectively directing the flow air from the air circulating means to the corresponding one of the outlet ports through either the corresponding one of the heat exchange paths or the corresponding one of the bypass paths in response to the temperature of the return air from the corresponding one of the respective zones sensed by the corresponding return air temperature sensing means.
0 Assignments
0 Petitions
Accused Products
Abstract
A system (1) for controlling the temperature of two zones or rooms (2) of a building comprises apparatus (5) which comprises a housing (9) within which an impeller (12) draws return air from the two rooms (2) through respective small bore return ducts (8) and inlet ports (14) into a common inlet chamber (22). A two zone heat exchanger (20) located in the 43 housing (10) downstream of the impeller (12) defines two mutually isolated flow air heat exchange paths (26) between the impeller (12) and respective outlet ports (15) through which flow air is delivered to the respective rooms (2) through small bore flow ducts (7). Two mutually isolated flow air bypass paths (28) corresponding to the flow air heat exchange paths (26) also communicate the impeller (12) with the respective outlet ports (15). Two corresponding primary air flaps (29) are selectively operable in first and second states for directing flow air from the impeller (12) through one of the corresponding flow air heat exchange and bypass paths (26) and (28), respectively, of the corresponding outlet ports (15). A microcontroller (50) is provided for selectively operating the primary air flaps (29) between the first and second states in response to temperature read from temperature sensors (37) located in the inlet ports (14) for detecting the temperature of the return air. A boiler (40a) is provided for providing heated heat exchange water to the heat exchanger (20).
-
Citations
20 Claims
-
1. Apparatus for controlling temperature in a plurality of zones in a building, the apparatus comprising:
-
a housing defining a hollow interior region and comprising; a plurality of inlet ports located in the housing and communicating with the hollow interior region of the housing, the inlet ports being adapted for connecting to respective return ducts communicating with the respective zones, and for receiving return air therethrough returned through the respective return ducts from the respective zones and for accommodating the return air to the hollow interior region, a plurality of outlet ports located in the housing and communicating with the hollow interior region of the housing, the outlet ports being adapted for connecting to respective flow ducts communicating with the respective zones, and for accommodating flow air therethrough from the hollow interior region for delivery through the flow ducts to the respective zones, an air circulating means located in the hollow interior region of the housing for circulating air through the hollow interior region from the inlet ports to the outlet ports, a heat exchange means located in the hollow interior region of the housing, a plurality of mutually isolated heat exchange paths formed in the hollow interior region of the housing extending through the heat exchange means and terminating in the respective outlet ports of the housing for accommodating the flow air therethrough from the air circulating means to the outlet ports, a plurality of mutually isolated bypass paths corresponding to the respective heat exchange paths and terminating in the respective outlet ports for accommodating the flow air from the air circulating means to the corresponding respective outlet ports with the flow air bypassing the corresponding ones of the heat exchange paths, a plurality of return air temperature sensing means located in the housing adjacent the respective inlet ports for sensing the temperature of the return air from the respective zones, and a plurality of primary valve means corresponding to the respective heat exchange paths, each primary valve means having only a single primary air flap located between the air circulating means and the heat exchange means adjacent the corresponding one of the heat exchange paths and the corresponding one of the bypass paths and being selectively operable in either one of a first state and a second state for selectively directing the flow air from the air circulating means to the corresponding one of the outlet ports through either the corresponding one of the heat exchange paths or the corresponding one of the bypass paths in response to the temperature of the return air from the corresponding one of the respective zones sensed by the corresponding return air temperature sensing means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A system for controlling temperature in a plurality of respective zones in a building, the system comprising:
-
apparatus for controlling the temperature in the zones, the apparatus comprising; a housing defining a hollow interior region and comprising; a plurality of inlet ports located in the housing and communicating with the hollow interior region for receiving return air therethrough returned from the respective zones and for accommodating the return air to the hollow interior region, a plurality of outlet ports located in the housing and communicating with the hollow interior region of the housing for accommodating flow air therethrough from the hollow interior region for delivery to the respective zones, an air circulating means located in the hollow interior region of the housing for circulating air through the hollow interior region from the inlet ports to the outlet ports, a heat exchange means located in the hollow interior region of the housing, a plurality of mutually isolated heat exchange paths formed in the hollow interior region of the housing extending through the heat exchange means and terminating in the respective outlet ports of the housing for accommodating the flow air therethrough from the circulating means to the outlet ports, a plurality of mutually isolated bypass paths corresponding to the respective heat exchange paths and terminating in the respective outlet ports for accommodating the flow air from the air circulating means to the corresponding respective outlet ports with the flow air bypassing the corresponding ones of the heat exchange paths, a plurality of return air temperature sensing means located in the housing adjacent the respective inlet ports for sensing the temperature of the return air from the respective zones, and a plurality of primary valve means corresponding to the respective heat exchange paths, each primary valve means having only a single primary air flap located between the air circulating means and the heat exchange means adjacent the corresponding one of the heat exchange paths and the corresponding one of the bypass paths and being selectively operable in either one of a first state and a second state for selectively directing the flow air from the air circulating means to the corresponding one of the outlet ports through either the corresponding one of the heat exchange paths or the corresponding one of the bypass paths in response to the temperature of the return air from the corresponding one of the respective zones sensed by the corresponding return air temperature sensing means; the system further comprising; a plurality of flow ducts communicating the outlet ports with the respective zones, and a plurality of return ducts communicating the inlet ports with the respective zones. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
-
-
20. A method for controlling the temperature in a plurality of respective zones in a building, the method comprising:
-
providing apparatus for controlling the temperature in the respective zones, providing the apparatus with a housing defining a hollow interior region and comprising; a plurality of inlet ports located in the housing and communicating with the hollow interior region for receiving return air therethrough returned from the respective zones and for accommodating the return air to the hollow interior region, a plurality of outlet ports located in the housing and communicating with the hollow interior region of the housing for accommodating flow air therethrough from the hollow interior region for delivery to the respective zones, locating an air circulating means in the hollow interior region of the housing for circulating air through the hollow interior region from the inlet ports to the outlet ports, locating a heat exchange means in the hollow interior region of the housing, providing a plurality of mutually isolated heat exchange paths formed in the hollow interior region of the housing extending through the heat exchange means and terminating in the respective outlet ports of the housing for accommodating the flow air therethrough from the circulating means to the outlet ports, providing a plurality of mutually isolated bypass paths corresponding to the respective heat exchange paths terminating in the respective outlet ports for accommodating the flow air from the circulating means to the corresponding respective outlet ports with the flow air bypassing the corresponding ones of the heat exchange paths, locating a plurality of return air temperature sensing means in the housing adjacent the respective inlet ports for sensing the temperature of the return air from the respective zones, providing a plurality of primary valve means corresponding to the respective heat exchange paths, each primary valve means having only a single primary air flap located between the air circulating means and the heat exchange means adjacent the corresponding one of the heat exchange paths and the corresponding one of the bypass paths and being selectively operable in either one of a first state and a second state for selectively directing the flow air from the air circulating means to the corresponding one of the outlet ports through either the corresponding one of the heat exchange paths or the corresponding one of the bypass paths in response to the temperature of the return air from the corresponding one of the respective zones sensed by the corresponding return air temperature sensing means, providing a plurality of flow ducts extending between the respective outlet ports and the respective corresponding zones, and providing a plurality of return ducts extending between the respective inlet ports and the respective corresponding zones; the method further comprising; operating the air circulating means to circulate air through the apparatus to and from the respective zones, and operating each of the primary air flaps in response to the temperature of the return air from the corresponding zone to direct the flow air through either the heat exchange path or the bypass path corresponding to the zone for maintaining the temperature in the corresponding zone at the desired temperature.
-
Specification