CA2028693A1 - Fluid heater system - Google Patents
Fluid heater systemInfo
- Publication number
- CA2028693A1 CA2028693A1 CA 2028693 CA2028693A CA2028693A1 CA 2028693 A1 CA2028693 A1 CA 2028693A1 CA 2028693 CA2028693 CA 2028693 CA 2028693 A CA2028693 A CA 2028693A CA 2028693 A1 CA2028693 A1 CA 2028693A1
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- CA
- Canada
- Prior art keywords
- fluid
- circuit
- shell
- primary
- heating system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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- Steam Or Hot-Water Central Heating Systems (AREA)
Abstract
FLUID HEATING SYSTEM
ABSTRACT
The present invention relates to a fluid heating system to be used in connection with a boiler or the like and more particularly relates to a heat exchanger system which can supply a large quantity of hot fluid such as water without the necessity of oversizing the boiler and with most effective heating performance.
The system comprises a primary fluid circuit connected to the boiler and a secondary fluid circuit supplying the necessary hot fluid. The secondary fluid circuit comprises a plurality of tubes allowing an optimum heat exchange with the fluid supplied by the primary circuit. Furthermore, a turbulence means is added to the first circuit to increase such heat exchange.
ABSTRACT
The present invention relates to a fluid heating system to be used in connection with a boiler or the like and more particularly relates to a heat exchanger system which can supply a large quantity of hot fluid such as water without the necessity of oversizing the boiler and with most effective heating performance.
The system comprises a primary fluid circuit connected to the boiler and a secondary fluid circuit supplying the necessary hot fluid. The secondary fluid circuit comprises a plurality of tubes allowing an optimum heat exchange with the fluid supplied by the primary circuit. Furthermore, a turbulence means is added to the first circuit to increase such heat exchange.
Description
. .
FIELD OF THE INVENTION
The present invention relates to a fluid heating system and more particularly to a fluid heating system in the form of a heat- ~ :
exchanger. ;~
DESCRIPTION OF PRIOR ART
Numerous apparatuses have been developed for heating, fluids such as water. When high volumes of hot water are required within a short period of time, while at other times smaller volumes are -required, such as in apartment buildings or health clubs, the :
necessary equipments to achieve such heating must be sized so as --to be able to supply hot water at a high and uniform temperature during the peak periods. Systems of this kind have previously been used and ¢omprise generally a boiler and a heat exchanger whereby hea~ in the form of hot water or oil is caused to circulate through a first piping system extending from the boiler to the heat `20 exchanger so as to`heat a fluid circulating in a second piping system.
,.:.
Requirements of this type are also necessary in restaurants and other establishments ~employing automatic equipments having intermitted demands`for hot water. This caused a major problem ~since lt was necessary to provide the system with a boiler which is used at full capacity only intermittently.
An example of a similar system is disclosed in US patent no.
~30` 2,781,174 (Smith) in which a dual system for heating water is pres-nted. This system comprises a boiler and a water heater. ~-US patènt no. 361,803 (Andrews) and 3,341,122 (Whittell) present a~water heater having two circuits in which the secondary circuLt ' -;~ 2028693 is generally arranged with a continuous coil of pipes through which water is permitted to pass for heating.
US patent no. 1,617,513 (Hartmann) discloses an apparatus for super-heating steam by means of a high pressure medium. This patent shows an incoming water pipe is subdivided into a plurality ~ of coils in the secondary circuit. However, since there is no ;~ means to adequately force the heat exchange between the primary and the secondary circuits, heat exchange in such a system is not appropriate.
US patent no. 4,347,972 (Hillerstromam et al) discloses an apparatus for producing hot water. This system also comprises a primary and a secondary circuits. However, the primary circuit only comprises a single coil pipe in which the exchange is possible.
~.:
US patent no. 4,084,546 (Schneebergen et al) shows a heat exchanger formed by two cylindrical shells defining annular chambers. This system uses mainly steam for heating the secondary circuit.
Therefore, there is no particular problem with appropriate heat exchange.
` ~ ~
Those systems are cumbersome because a large heat exchanger and a high capacity boiler are necessary for appropriate heat exchange ~;` between the primary and the secondary circuits since, as mentioned ~above, the heat exchange is not optimum and the boiler must be sized to be capable of producing heat to meet short term demand.
.~
`~ QBJECTS OF THE PRBSENT INVENTION
':
It is an object of the present invention to provide an efficient and economical fluid heating ~ystem.
~;:
~ .
~ " 2028693 Another object of the present invention is to provide a fluid heating system which can be used with a boiler having a smaller heat output that would be required with ordinary or conv~ntional ~ fluid heater.
; Still another object of the present invention is to provide a fluid heating system in which the fluid can be rapidly heated.
Yet another object of the present invention is to provide a fluid heating system which will heat a large quantity of fluid in a short period of time.
Another object of the present invention is also to provide a fluid heating system which can provide additional hot fluid supply when needed for general purposes.
Still another object of the present invention is to provide a fluid heating system connected to a boiler or the like which will supply 2~0 hot fluid for a considerable time after the boiler has been shut ~ ; down.
X~ Yet another object of the present invention is to provide a fluid heating system in the form of an energy accumulation system connected to a boiler or the like supplying hot fluid without the ~ necessity of oversizing the boller to meet short term demand and `s ~ ~ with effective haating performances.
.: .
I It is another object of the present invention to provide an energy 10; accumulation system of the type described which will obviate the ~;
use of a larger boiler t~o~meet short term demand. ~
Finally, it is a general object of the present invention to provide ~;
~; a heating system in which the fluid is water.
:
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These and other objects of the present invention will be more particularly set forth in the following specification.
~ .
SUMMARY OF THE PRESENT INVENTION
The present invention relates generally to a fluid heating system to be used in connection with a boiler or other heat generating means, said system comprising:
a shell having an upper and a lower portion;
- a primary fluid circuit within said shell and having a first inlet and a first outlet, said first primary circuit inlet and outlet extending through said shell;
first fluid circulating means forcing said primary fluid through said primary circuit;
20~
a secondary fluid circuit having a first inlet and a first outlet, said first secondary circuit inlet and outlet extending through said;shell;
a second fluid circulating means forcing said secondary fluid throug~. said secondary~fluid circuit;
turbulence means, within said shell, connected to said primary fluid circuit:
wherein said sicondary fluid circuit comprises a plurality of ;~ ~ tubes extending within said shell between said first inlet and said outlet; and said fluid in the secondary circuit is in heat ~ axchange relation~,hip with the fluid from the primary circuit.
`~`::~: : ~ :
2028~93 DESCRIPTION OF THE DRAWINGS
In the drawing, like reference numbers refer to like parts throughout the several views, and wherein:
~ Figure 1 is a perspective view of an embodiment of the present ; ~ invention.
Figure 2 is a cross-section view of a second embodiment of the present invention.
Figure 3 is a schematic representation of a complete heating system embodying the present invention.
DESCRIPTION OF THE PREFERRED EMBODIMENT
Figure 1 presents the fluid heating system 5 in accordance to the 1~20 present invention, ;which comprises a generally tubular shell 10 having an uppèr 15 and a lower 20 portions. The fluid heating system is of the heat exchanger type and comprises a primary 25 and a secondary 30 fluid circuits. The present invention, as mentioned above, relates to a fluid heater system, however, for the sake of illustration only, the described embodlment will be shown using water for~the primary 25 and secondary 30 circuits.
The primary circuit generally described as number 25 includes a first~pipe 35 extending through the upper portion 15 of the shell ~30 10 which is connected to the turbulence means 40. The hot water which is produce~`~by a boiler or other heat generating means enters ~` ~ into the shell via said~ pipe 35 to the turbulence means 40 and ` exits the shell through a~second pipe 45 also located into upper portion 15 of the shell l0.
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2~28693 The primary circuit 25 is connected to the boiler or other heat generating means for the purpose of heating or re-heating the water contained therein as it will be appreciated hereinafter.
The fluid heating system includes a plurality of coiled tubes 50 which receive cold water from the public waterworks system or another source through a first inlet 55 provided in the upper portion 15 of the tubular shell 10 and discharges the hot water through the first outlet 60 also provided in the upper portion of the shell 10. Said plurality of tubes forms the secondary circuit 30 which is enclosed into the shell 10.
When the water in the primary circuit is heated, an expansion area 65 must be provided in the upper end of the shell 10 since the ~; water will liberate any dissolved air upon entering shell 10. An air vent 70 is located on the upper portion 15 of the shell 10 which, in the embodiment disclosed, extends between the second pipe ~; 45 and the first outlet 60. It is important to mention that the fluid connections for the fluid heating system need not be ~ necessarily at the upper portion of same but may be in the bottom `~ thereof with the appropriate modifications for the turbulence means 40. Excess air will be evacuated through said air vent 70.
. ~ . ..
`~ The size and shape of the shell 10 depend on the quantity of hot ~ water necessary for a specific use. The material used for the ``; manufacture of the shell should be chosen taking into account the temperature and pressure involved. Thus, for different system i capacities and application, the size and the number of tubes will vary.
The bottom of the heating system 5 should be provided with a draining valve for cleaning purpose (not shown).
`::
2~28~93 The first pipe 35 of the primary circuit 25 is connected to the turbulence means 40 situated in the bottom portion 20 o~ the shell ; lo. This turbulence means comprises a perforated tube 75 having a plurality of openings 80 which will create high turbulence within the shell in the vicinity of said tubes 50 incoming hot water therefore improving the heat exchange between the primary 25 and the secondary 30 fluid circuits. By so doing, the size of the heat exchanger is considerably reduced since the temperature of the water within the shell 10 is uniform. The embodiment shown in Figure 1 comprises six coils connected at point 85 of the first inlet 55 and at point 90 of the first outlet 60. The water thus heated in tubes 50 is then available for domestic or other use by connection to the first outlet 60.
All the connections should be made by appropriate means such as welding and should also allow for a certain axial expansion and contraction of the elements.
The turbulence means will create a high velocity egress of heated 20~ water from the lower portion of the shell which will permit said heated water to replace the water in the vicinity of the coils which has been cooled by the transfer of heat to the water within said coils. This cooled water may then escape upwardly at the upper end 15 of the shell through pipe 45. Due to this turbulence, the colder water which, normally due to its relatively greater density would move down, will be forced upwards into the shell 10.
By so doing, an optimum~ heat exchange is possible between the primary 25 and the second 30 circuits.
~ 30 In F gure 2, there is shown another turbulence means which `~ ~ comprises a pair of perforated tubes located on opposite sides within the shell 10. ~In this embodiment, the first inlet 55 of the primary circuit 25 is connected to a first generally vertical tube 95 while the second pipe 45 is connected to a similar tube 100.
.
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~::` 20286g3 By the use of these turbulence means, the water is forced to travel uniformly within the shell 10 thus improving the heat exchange with respect to prior art systems.
Having described generally the heat exchanger in accordance with the present invention, an illustration of the use of same will be hereinafter disclosed. In Figure 3, there is shown an embodiment of a complete heating system incorporating the fluid heating system 5 in accordance with the present invention. The heating system that will be described is of more or less conventional design. The arrows designate the path of flow of water.
In operation, the complete heating system according to the invention is efficient and readily controllable under a wide variety of operating conditions. However, since the invention relates more particularly to the secondary fluid heating circuit and not to the controlling means of same, such controlling means will not be described in details.
In this embodiment, the heat exchanger is connected to a boiler 105 ~ or the like, through supply line 110 and return line 115. Through ;~ these lines, the heated water from the boiler 105 can be made to circulate through the primary circuit 25 of the fluid heat 15 system. The boiler 105 may be heated by gas, oil, electricity or other means. The system may also be provided with a safety expansion tank (not shown). Pumping means 120 may be necessary to force circulation of the heated water into the heating system 5.
In this case, said pumping means is located in said supply line 110. A thermostat-controlled regulating valve 155 should be placed after the pumping means 120 to maintain the water temperature of the primary circ~it.
:~:
The cold water which is to be heated by the boiler 105 is supplied ` to the secondary clrcuit 30 through supply line of the heating :
~ ' system 5 and leaves same at the appropriate temperature by the first outlet 60 of said secondary circuit through line 135. A
second pumping means 145 should be provided in line 130 if necessary. Water for the secondary circuit 30 can be fresh water from the city which enters into same via the first inlet 55.
-: .
An aquastat 140 is provided on the heating system 5 which will monitor the temperature within same. Irhis aquastat shutts off the pumping means 145 if the temperature reaches a predetermined level.
10 When no hot water is necessary for the secondary circuit 30, the pumping means 145 is at rest and the heat exchanger does not exceed a dangerous temperature. Hot water entering the tank from first pipe 35 flows through the turbulence means 40 and then inside the shell 10 in its lower portion thereof and up through the plurality of tubes 50. This allows the air to separate from the water.
.
To maintain a more uniform temperature, particularly where high temperature is employed or where only infrequent use is made of domestic hot water, a mixing valve 150 may be inserted in pipe 135 20 to the supply line 130.
It is to be understood that to keep the temperature within the heating system 5 as uniform as possible, same should be insulated with fiberglass or the like. Such insulation should also be provided for all the feeding pipes. Furthermore, a multitude of additional pipelines and zone valves may be connected to the embodiment shown for different purposes.
. .. .
While a specific preferred embodiment of the invention has been 30 illustrated in detail, it will be understood that this is an example of an embodiment only and not to be construed as limiting the scope and spirit of the present invention. Said scope and spirit of the invention are defined solely in the appended claims.
For example, the primary circuit could be provided within electric :
~ 2028693 heating system which is used to heat a certain quantity of fluid.
The primary heat transfer fluid has been shown as water but may be any other appropriate fluid such as oil for exam~le. Said fluid will be forced, as described in the present embodiment, to heat the water contained in the secondary circuit. The only difference is that the hot water is not supplied from outside the shell.
Furthermore, various controls should be provided at various points I so as to provide a practically automatic system. However, since those controls are well-known in the art, same have not been described.
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LIST OF ELEMENTS
fluid heating system tubular shell upper portion lower portion primary fluid circuit secondary fluid circuit first pipe turbulence means second pipe tubes first inlet 60 first outlet ~ :
expansion area air vent perforated tube ~.
: 80 openings 85 first connection ~ ~;
second connection first perforated tube ~ lOo second perforated tube `~ ~ 105 boiler `
110 supply line :::. 115 return line ~:
`~ 120 first pumping means 125 regulating valve 130 supply line I ~ 135 heated water line ~:
140 aquastat ; 145 second pumping means 150 mixing valve 155 thermostat controlled regulating valve :' ~
:
FIELD OF THE INVENTION
The present invention relates to a fluid heating system and more particularly to a fluid heating system in the form of a heat- ~ :
exchanger. ;~
DESCRIPTION OF PRIOR ART
Numerous apparatuses have been developed for heating, fluids such as water. When high volumes of hot water are required within a short period of time, while at other times smaller volumes are -required, such as in apartment buildings or health clubs, the :
necessary equipments to achieve such heating must be sized so as --to be able to supply hot water at a high and uniform temperature during the peak periods. Systems of this kind have previously been used and ¢omprise generally a boiler and a heat exchanger whereby hea~ in the form of hot water or oil is caused to circulate through a first piping system extending from the boiler to the heat `20 exchanger so as to`heat a fluid circulating in a second piping system.
,.:.
Requirements of this type are also necessary in restaurants and other establishments ~employing automatic equipments having intermitted demands`for hot water. This caused a major problem ~since lt was necessary to provide the system with a boiler which is used at full capacity only intermittently.
An example of a similar system is disclosed in US patent no.
~30` 2,781,174 (Smith) in which a dual system for heating water is pres-nted. This system comprises a boiler and a water heater. ~-US patènt no. 361,803 (Andrews) and 3,341,122 (Whittell) present a~water heater having two circuits in which the secondary circuLt ' -;~ 2028693 is generally arranged with a continuous coil of pipes through which water is permitted to pass for heating.
US patent no. 1,617,513 (Hartmann) discloses an apparatus for super-heating steam by means of a high pressure medium. This patent shows an incoming water pipe is subdivided into a plurality ~ of coils in the secondary circuit. However, since there is no ;~ means to adequately force the heat exchange between the primary and the secondary circuits, heat exchange in such a system is not appropriate.
US patent no. 4,347,972 (Hillerstromam et al) discloses an apparatus for producing hot water. This system also comprises a primary and a secondary circuits. However, the primary circuit only comprises a single coil pipe in which the exchange is possible.
~.:
US patent no. 4,084,546 (Schneebergen et al) shows a heat exchanger formed by two cylindrical shells defining annular chambers. This system uses mainly steam for heating the secondary circuit.
Therefore, there is no particular problem with appropriate heat exchange.
` ~ ~
Those systems are cumbersome because a large heat exchanger and a high capacity boiler are necessary for appropriate heat exchange ~;` between the primary and the secondary circuits since, as mentioned ~above, the heat exchange is not optimum and the boiler must be sized to be capable of producing heat to meet short term demand.
.~
`~ QBJECTS OF THE PRBSENT INVENTION
':
It is an object of the present invention to provide an efficient and economical fluid heating ~ystem.
~;:
~ .
~ " 2028693 Another object of the present invention is to provide a fluid heating system which can be used with a boiler having a smaller heat output that would be required with ordinary or conv~ntional ~ fluid heater.
; Still another object of the present invention is to provide a fluid heating system in which the fluid can be rapidly heated.
Yet another object of the present invention is to provide a fluid heating system which will heat a large quantity of fluid in a short period of time.
Another object of the present invention is also to provide a fluid heating system which can provide additional hot fluid supply when needed for general purposes.
Still another object of the present invention is to provide a fluid heating system connected to a boiler or the like which will supply 2~0 hot fluid for a considerable time after the boiler has been shut ~ ; down.
X~ Yet another object of the present invention is to provide a fluid heating system in the form of an energy accumulation system connected to a boiler or the like supplying hot fluid without the ~ necessity of oversizing the boller to meet short term demand and `s ~ ~ with effective haating performances.
.: .
I It is another object of the present invention to provide an energy 10; accumulation system of the type described which will obviate the ~;
use of a larger boiler t~o~meet short term demand. ~
Finally, it is a general object of the present invention to provide ~;
~; a heating system in which the fluid is water.
:
`: .: :
; ~ :~
These and other objects of the present invention will be more particularly set forth in the following specification.
~ .
SUMMARY OF THE PRESENT INVENTION
The present invention relates generally to a fluid heating system to be used in connection with a boiler or other heat generating means, said system comprising:
a shell having an upper and a lower portion;
- a primary fluid circuit within said shell and having a first inlet and a first outlet, said first primary circuit inlet and outlet extending through said shell;
first fluid circulating means forcing said primary fluid through said primary circuit;
20~
a secondary fluid circuit having a first inlet and a first outlet, said first secondary circuit inlet and outlet extending through said;shell;
a second fluid circulating means forcing said secondary fluid throug~. said secondary~fluid circuit;
turbulence means, within said shell, connected to said primary fluid circuit:
wherein said sicondary fluid circuit comprises a plurality of ;~ ~ tubes extending within said shell between said first inlet and said outlet; and said fluid in the secondary circuit is in heat ~ axchange relation~,hip with the fluid from the primary circuit.
`~`::~: : ~ :
2028~93 DESCRIPTION OF THE DRAWINGS
In the drawing, like reference numbers refer to like parts throughout the several views, and wherein:
~ Figure 1 is a perspective view of an embodiment of the present ; ~ invention.
Figure 2 is a cross-section view of a second embodiment of the present invention.
Figure 3 is a schematic representation of a complete heating system embodying the present invention.
DESCRIPTION OF THE PREFERRED EMBODIMENT
Figure 1 presents the fluid heating system 5 in accordance to the 1~20 present invention, ;which comprises a generally tubular shell 10 having an uppèr 15 and a lower 20 portions. The fluid heating system is of the heat exchanger type and comprises a primary 25 and a secondary 30 fluid circuits. The present invention, as mentioned above, relates to a fluid heater system, however, for the sake of illustration only, the described embodlment will be shown using water for~the primary 25 and secondary 30 circuits.
The primary circuit generally described as number 25 includes a first~pipe 35 extending through the upper portion 15 of the shell ~30 10 which is connected to the turbulence means 40. The hot water which is produce~`~by a boiler or other heat generating means enters ~` ~ into the shell via said~ pipe 35 to the turbulence means 40 and ` exits the shell through a~second pipe 45 also located into upper portion 15 of the shell l0.
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2~28693 The primary circuit 25 is connected to the boiler or other heat generating means for the purpose of heating or re-heating the water contained therein as it will be appreciated hereinafter.
The fluid heating system includes a plurality of coiled tubes 50 which receive cold water from the public waterworks system or another source through a first inlet 55 provided in the upper portion 15 of the tubular shell 10 and discharges the hot water through the first outlet 60 also provided in the upper portion of the shell 10. Said plurality of tubes forms the secondary circuit 30 which is enclosed into the shell 10.
When the water in the primary circuit is heated, an expansion area 65 must be provided in the upper end of the shell 10 since the ~; water will liberate any dissolved air upon entering shell 10. An air vent 70 is located on the upper portion 15 of the shell 10 which, in the embodiment disclosed, extends between the second pipe ~; 45 and the first outlet 60. It is important to mention that the fluid connections for the fluid heating system need not be ~ necessarily at the upper portion of same but may be in the bottom `~ thereof with the appropriate modifications for the turbulence means 40. Excess air will be evacuated through said air vent 70.
. ~ . ..
`~ The size and shape of the shell 10 depend on the quantity of hot ~ water necessary for a specific use. The material used for the ``; manufacture of the shell should be chosen taking into account the temperature and pressure involved. Thus, for different system i capacities and application, the size and the number of tubes will vary.
The bottom of the heating system 5 should be provided with a draining valve for cleaning purpose (not shown).
`::
2~28~93 The first pipe 35 of the primary circuit 25 is connected to the turbulence means 40 situated in the bottom portion 20 o~ the shell ; lo. This turbulence means comprises a perforated tube 75 having a plurality of openings 80 which will create high turbulence within the shell in the vicinity of said tubes 50 incoming hot water therefore improving the heat exchange between the primary 25 and the secondary 30 fluid circuits. By so doing, the size of the heat exchanger is considerably reduced since the temperature of the water within the shell 10 is uniform. The embodiment shown in Figure 1 comprises six coils connected at point 85 of the first inlet 55 and at point 90 of the first outlet 60. The water thus heated in tubes 50 is then available for domestic or other use by connection to the first outlet 60.
All the connections should be made by appropriate means such as welding and should also allow for a certain axial expansion and contraction of the elements.
The turbulence means will create a high velocity egress of heated 20~ water from the lower portion of the shell which will permit said heated water to replace the water in the vicinity of the coils which has been cooled by the transfer of heat to the water within said coils. This cooled water may then escape upwardly at the upper end 15 of the shell through pipe 45. Due to this turbulence, the colder water which, normally due to its relatively greater density would move down, will be forced upwards into the shell 10.
By so doing, an optimum~ heat exchange is possible between the primary 25 and the second 30 circuits.
~ 30 In F gure 2, there is shown another turbulence means which `~ ~ comprises a pair of perforated tubes located on opposite sides within the shell 10. ~In this embodiment, the first inlet 55 of the primary circuit 25 is connected to a first generally vertical tube 95 while the second pipe 45 is connected to a similar tube 100.
.
.~
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1 : : .
~::` 20286g3 By the use of these turbulence means, the water is forced to travel uniformly within the shell 10 thus improving the heat exchange with respect to prior art systems.
Having described generally the heat exchanger in accordance with the present invention, an illustration of the use of same will be hereinafter disclosed. In Figure 3, there is shown an embodiment of a complete heating system incorporating the fluid heating system 5 in accordance with the present invention. The heating system that will be described is of more or less conventional design. The arrows designate the path of flow of water.
In operation, the complete heating system according to the invention is efficient and readily controllable under a wide variety of operating conditions. However, since the invention relates more particularly to the secondary fluid heating circuit and not to the controlling means of same, such controlling means will not be described in details.
In this embodiment, the heat exchanger is connected to a boiler 105 ~ or the like, through supply line 110 and return line 115. Through ;~ these lines, the heated water from the boiler 105 can be made to circulate through the primary circuit 25 of the fluid heat 15 system. The boiler 105 may be heated by gas, oil, electricity or other means. The system may also be provided with a safety expansion tank (not shown). Pumping means 120 may be necessary to force circulation of the heated water into the heating system 5.
In this case, said pumping means is located in said supply line 110. A thermostat-controlled regulating valve 155 should be placed after the pumping means 120 to maintain the water temperature of the primary circ~it.
:~:
The cold water which is to be heated by the boiler 105 is supplied ` to the secondary clrcuit 30 through supply line of the heating :
~ ' system 5 and leaves same at the appropriate temperature by the first outlet 60 of said secondary circuit through line 135. A
second pumping means 145 should be provided in line 130 if necessary. Water for the secondary circuit 30 can be fresh water from the city which enters into same via the first inlet 55.
-: .
An aquastat 140 is provided on the heating system 5 which will monitor the temperature within same. Irhis aquastat shutts off the pumping means 145 if the temperature reaches a predetermined level.
10 When no hot water is necessary for the secondary circuit 30, the pumping means 145 is at rest and the heat exchanger does not exceed a dangerous temperature. Hot water entering the tank from first pipe 35 flows through the turbulence means 40 and then inside the shell 10 in its lower portion thereof and up through the plurality of tubes 50. This allows the air to separate from the water.
.
To maintain a more uniform temperature, particularly where high temperature is employed or where only infrequent use is made of domestic hot water, a mixing valve 150 may be inserted in pipe 135 20 to the supply line 130.
It is to be understood that to keep the temperature within the heating system 5 as uniform as possible, same should be insulated with fiberglass or the like. Such insulation should also be provided for all the feeding pipes. Furthermore, a multitude of additional pipelines and zone valves may be connected to the embodiment shown for different purposes.
. .. .
While a specific preferred embodiment of the invention has been 30 illustrated in detail, it will be understood that this is an example of an embodiment only and not to be construed as limiting the scope and spirit of the present invention. Said scope and spirit of the invention are defined solely in the appended claims.
For example, the primary circuit could be provided within electric :
~ 2028693 heating system which is used to heat a certain quantity of fluid.
The primary heat transfer fluid has been shown as water but may be any other appropriate fluid such as oil for exam~le. Said fluid will be forced, as described in the present embodiment, to heat the water contained in the secondary circuit. The only difference is that the hot water is not supplied from outside the shell.
Furthermore, various controls should be provided at various points I so as to provide a practically automatic system. However, since those controls are well-known in the art, same have not been described.
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LIST OF ELEMENTS
fluid heating system tubular shell upper portion lower portion primary fluid circuit secondary fluid circuit first pipe turbulence means second pipe tubes first inlet 60 first outlet ~ :
expansion area air vent perforated tube ~.
: 80 openings 85 first connection ~ ~;
second connection first perforated tube ~ lOo second perforated tube `~ ~ 105 boiler `
110 supply line :::. 115 return line ~:
`~ 120 first pumping means 125 regulating valve 130 supply line I ~ 135 heated water line ~:
140 aquastat ; 145 second pumping means 150 mixing valve 155 thermostat controlled regulating valve :' ~
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Claims (11)
1- A fluid heating system to be used in connection with a boiler or other heat generating means, said system comprising:
- a shell having an upper and a lower portion;
- a primary fluid circuit within said shell and having a first inlet and a first outlet, said first primary circuit inlet and outlet extending through said shell;
- first fluid circulating means forcing said primary fluid through said primary circuit;
- a secondary fluid circuit having a first inlet and a first outlet, said first secondary circuit inlet and outlet extending through said shell;
- a second fluid circulating means forcing said secondary fluid through said secondary fluid circuit;
- turbulence means, within said shell, connected to said primary fluid circuit;
wherein said secondary fluid circuit comprises a plurality of tubes extending within said shell between said first inlet and said outlet, and said fluid in the secondary circuit is in heat exchange relationship with the fluid from the primary circuit.
- a shell having an upper and a lower portion;
- a primary fluid circuit within said shell and having a first inlet and a first outlet, said first primary circuit inlet and outlet extending through said shell;
- first fluid circulating means forcing said primary fluid through said primary circuit;
- a secondary fluid circuit having a first inlet and a first outlet, said first secondary circuit inlet and outlet extending through said shell;
- a second fluid circulating means forcing said secondary fluid through said secondary fluid circuit;
- turbulence means, within said shell, connected to said primary fluid circuit;
wherein said secondary fluid circuit comprises a plurality of tubes extending within said shell between said first inlet and said outlet, and said fluid in the secondary circuit is in heat exchange relationship with the fluid from the primary circuit.
2- A fluid heating system according to claim 1, wherein said secondary fluid circuit comprises a by-passing means.
3- A fluid heating system according to claim 2, wherein said by-passing means is formed of a valve controlling the quantity of fluid going through said secondary fluid circuit.
4- A fluid heating system according to claim 1, wherein said first fluid circulating means is a pump.
5- A fluid heating system according to claim 1, wherein said turbulence means comprise a tube provided with a plurality of perforations and placed in the portion of said shell which is distal to said first inlets and outlets of said primary and said secondary circuits.
6- A fluid heating system according to claim 5, wherein said tubes further comprises constriction means and said tubes are coiled.
7- A fluid heating system according to claim 1, wherein said first fluid is water.
8- A fluid heating system according to claim 7, wherein the secondary fluid is water.
9- A fluid heating system according to claim 7, wherein the first fluid is oil.
10- A fluid heating system according to claim 7, wherein the secondary fluid is oil.
11- A fluid heating system to be used in connection with a boiler or the like, said system comprising:
- a shell having an upper and a lower portion;
- a primary fluid circuit within said shell and having a first inlet and a first outlet, said first inlet and outlet extending through said shell:
- a secondary fluid circuit having a first inlet and a first outlet, said first inlet and outlet extending through said shell;
- turbulence means, within said shell, connected to said primary fluid circuit;
- fluid circulating means forcing said fluid through said secondary fluid circuit;
wherein said secondary fluid circuit comprises a plurality of coiled of tubes extending within said shell between said first inlet and said outlet, and said fluid in the secondary circuit is in heat exchange relationship with the fluid from the primary circuit by means of the turbulence means and said turbulence means comprises a tube provided with a plurality of perforations in which is placed in the portion opposed to said first inlet and outlet of said primary and said secondary circuit.
- a shell having an upper and a lower portion;
- a primary fluid circuit within said shell and having a first inlet and a first outlet, said first inlet and outlet extending through said shell:
- a secondary fluid circuit having a first inlet and a first outlet, said first inlet and outlet extending through said shell;
- turbulence means, within said shell, connected to said primary fluid circuit;
- fluid circulating means forcing said fluid through said secondary fluid circuit;
wherein said secondary fluid circuit comprises a plurality of coiled of tubes extending within said shell between said first inlet and said outlet, and said fluid in the secondary circuit is in heat exchange relationship with the fluid from the primary circuit by means of the turbulence means and said turbulence means comprises a tube provided with a plurality of perforations in which is placed in the portion opposed to said first inlet and outlet of said primary and said secondary circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2028693 CA2028693A1 (en) | 1990-10-26 | 1990-10-26 | Fluid heater system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2028693 CA2028693A1 (en) | 1990-10-26 | 1990-10-26 | Fluid heater system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2028693A1 true CA2028693A1 (en) | 1992-04-27 |
Family
ID=4146273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2028693 Abandoned CA2028693A1 (en) | 1990-10-26 | 1990-10-26 | Fluid heater system |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2028693A1 (en) |
-
1990
- 1990-10-26 CA CA 2028693 patent/CA2028693A1/en not_active Abandoned
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| Date | Code | Title | Description |
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| FZDE | Dead |