CA1118026A - Boiling water dispenser - Google Patents
Boiling water dispenserInfo
- Publication number
- CA1118026A CA1118026A CA000303835A CA303835A CA1118026A CA 1118026 A CA1118026 A CA 1118026A CA 000303835 A CA000303835 A CA 000303835A CA 303835 A CA303835 A CA 303835A CA 1118026 A CA1118026 A CA 1118026A
- Authority
- CA
- Canada
- Prior art keywords
- water
- boiling
- water tank
- chamber
- tank
- 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.)
- Expired
Links
Landscapes
- Apparatus For Making Beverages (AREA)
- Devices For Dispensing Beverages (AREA)
Abstract
ABSTRACT FOR THE DISCLOSURE
A boiling water dispenser which includes a cold water tank and a hot water tank which is fed with boiling water only when water boils in a boiling chamber. The boiling chamber is fed by the cold water tank and is situated within the hot water tank. The dispenser also includes condensers to ensure no escape of steam and safety switches to cut off power to one or more of electrical heating elements on failure of the water supply or when the hot water tank is full of boiling water.
A boiling water dispenser which includes a cold water tank and a hot water tank which is fed with boiling water only when water boils in a boiling chamber. The boiling chamber is fed by the cold water tank and is situated within the hot water tank. The dispenser also includes condensers to ensure no escape of steam and safety switches to cut off power to one or more of electrical heating elements on failure of the water supply or when the hot water tank is full of boiling water.
Description
rrhis lnvention relates to improvements in or relating to boiling water dispensers which hea-t water to boiling point, store the water at boiling temperatures and allow boiling water to be periodically drawn off and replenished without causing undue cooling of the remaining boiling water.
Conventional water heaters suffer from the disadvantage that, as the wa-ter in the heater is removed, the heater has to be replenished with cold water which then mixes with the boiling water within the heater to cause a sudden drop in temperature of the remaining water in the heater~ Liquid storage and heating units have also been proposed in which a cold water tank is separated from the area of the tank con-taining the hot water so that addition of further cold water does not have the e~fect of reducing the temperature of all the water within the tank. However, a problem that can be frequently encountered with such equipment is that the interior of the e~uipment can become clogged with scale and other contamlnants which ma.y enter with the watex supply.
It is an object of the present invention to provide an ~0 im~roved boiling water dispenser.
According to the present invention there is pr~videa a boiling water dispenser comprising a tank for cold water in fluid communication with a boiling chamber, said boiling chamber being positioned within a tank for hot water and having means to boil the water, the boiling chambex having an upwardly extending expansion pipe which is arranged i.n use to feed the boiling water to the hot tank only when the water boils in the boiling chamber,- and an outlet positioned in the `~. 2 hot tank to ~llow boiling wa-ter to be dispensed from the dispenser, the water within the hot tank being maintained at boiling temperature due to conduction of hea-t from the heating means through the boiling chamber~
Preferably the free end of the expansion pipe terminates at a level above the normal static level of water in the cold water tank so that water only escapes to the hot water tank by percolating over the free end of the expansion pipe due to boiling in the boiling chamber. The cold water tank is preferably positioned above the hot water tank and the boiling chamber comprises a glass enclosure fed at one end by a conduit from the cold water tank and having the e~pansion pipe extending upwardly from the opposite end.
In a preferred embodiment a primary heating elemen-t and a pilot heating element are positioned within the boiling chamber. A primary switching means is provided to sense the level of boiling water in the hot tank so that at a predetermined level the primary heating element is cut off leaving only the pilot element to maintain the water within the hot tank at boiling tem erature. A secondary switching means may also be provided to switch off both hea-ting elements in the event of water within the cold water tank ~alling below a predetermined level.
Preferably a condenser is provided to condense steam produced by the boiling chamber to water which is returned to the hot or cold water tank. The condenser preferably comprises a primary condenser formed in the lid of the dispenser and in fluid communica-tion with an enclosure positioned adjacent the free end of the expansion pipe, the steam condensing to water in the lid, which water falls back into the enclosure surrounding the expansion pipe and from there into the hot water tank.
In a preferred embodiment the secondary condenser comprises a conduit extending from the primary condenser down onto a plate located slightly above the full level of water in the cold water tank so that steam not condensed in the primary condenser passes down -the conduit onto the plate and is condensed to water which then falls into the cold water tank.
: 20 - :
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' ':
8~Z~i The present invention will now be described with reference to the accompanying drawings in which:
Figure 1 is a perspec-tive view of a boiling water dispenser in accordance with the present invention; and Figure 2 is a perspective view of an upper part of the dispenser illus-trated in Figure 1.
A boiling water dispenser as illustrated in Figures 1 and 2 comprises an ou-ter rectangular ca~ing 20 having a base 21 and enclosed by a rectangular lid 22. Within the upper part of the casing 20 there is located a rectangular cold wa-ter tank 23 which is fed with cold water viaan inlet pipe 24 and controlled by a conventional float valve 25. A hot water tank 26 is located beneath the cold water tank 23 and is bordered by the base of the outer casing 21 and insulating wall portions 27. An outlet pipe 28 which may be in the form of a ~ispensing tap (not shown) is position2d in the base of the container to allow hot water -to be released from the hot tan~ 26.
Within the lower part of the hot water tank 26 is located a boiling chamber 31 which comprises a copper cylinder 32 mounted with its axis horizontal and arranged to contain a pair of electrical heating elements 34 and 35 which are secured at one end in one end face 37 of the cylinder. The end face 37 of the cylinder is connected to the base of the cold water tank 33 via a conduit 38 which extends through the side wall 27 of the hot water tank. The opposi-te end 40 of the boiling chamber 31 is provided with a vertically ex-tending expansion pipe 42 which extends up through the hot water tank 26 and terminates within an open ended cylindrical enclosure ~3 which is ].ocated in an inverted fashion over the end ~4 of the expansion pipe 42. The end 44 of expansion pipe 42 is arranged to be above -the full level of water in the cold water tank 23.
The level of water in the cold water tank is controlled by the ball valve 25 and an overflow pipe 48 is also provided to ensure against overfilling of the cold water tank due to breakdown of the float valve.
To operate the dispenser the tank 23 is filled with cold water via the inlet 24 and this cold water pours into the boiling chamber 31 via the conduit 38 and up the expansion pipe 42 to find a static level which is common with the level in the cold water tank. At this stage the hot water tank is effectively sealed from the boiling chamber 31 and is empty because the free standing level of the water in the expansîon pipe 42 is below the upper end 4a of the pipe. If the power is then swi~ched on tne electrical heating elements 34 and 35 heat the water within the boiling chamber and the hot water circulates to the top of the expansion pipe q2. Eventually the water within the boiling chamber boils and this has the effect of causing the level in the expansion pipe to rise until the water cascades (arrowed in Figure 1) over the upper end ~4 ana down within the enclosure 43 to fall into the base of the hot water tank 26. The water which falls in the hot water tank 26 is maintained in a-boiling condition by heak from ~he heating elements 34 and 35 which lS conducted through the brass walls of the boiling chamber 31.
As boiling water percolates from the boiling chamber 31 via the expansion pipe 42 it is replenished with cold water at 12iE;
the opposite end 37 of ~he chamber 31 via the conduit 38 connected to the cold water tank 23. Eventually the hot water tank becomes full of boilin~ water to a level at which the boiling wa-ter enters a sealed cylindrical enclosure 50 positioned in the cold water tank and fed via a conduit 51 ~hich extends into the hot water tank 26 as shown in Figure 1. A float 53 is provided in this sealed chamber 50 so that as the hot water enters this chamber the float is lifted to actuate by til~ing a first mercury switch 54 via an arm and spring arrangement 55.
Actuation o the first mercury switch 54 causes the power to be cut off from the primary heating element 35 thereby maintaining the pilot element 34 to maintain the water in the hot ~ank at boiling tempera-ture bu-t not causing boiling water to be ejected from the expansion pipe 42~. When in this condition the dispenser contains a full tank of boiling ~ater which can be drawn ofE from the outlet 28 whilsl: at the same time contains cold water in the cold water tank to replenish any boiling water which may be periodically removed.
As boiliny water is dispensed via the outlet 28, the : 20 level in the sealed enclosure 50 drops and accordingly the float 53 re-actuates the mercury switch 54 to allow the heating element 35 to operate thereby causin~ further percolation of boiling water out of the expansion pipe to top up the hot water tank.
The dispenser also includes a safety device to ensure that neither heating element will operate in the event o~
failure of the cold water supply. A cylindrical enclosure 60 is located adjacent the inlet 2~ of the cold water tank and is provided wi-th a float 61 connected via an arm and spring arranyem2nt 62 to a second mercury switch 63. If the level oE cold water within the scaled chamber 60 drops below a predetermined level, the floa-t sinks to a level at which the secondary mercury switch is closed cut-ting off all power to both heating elements 34 and 35 and -therefore ensuriny against damage to the heating elements. The enclosure 60 surrounding the float 61 is provided to ensure that water entering the cold water tank does not cause undue turbulence of the ~loat 61.
Another feature of the boiling water dispenser is provision of primary and secondary condensers in the roo~ of the unit to ensure that steam generated by the boiling chamber 31 is condensed into water which is returned to hot water and cold water tanks. As shown in Figure 1 the enclosure 43 of the expansion pipe 42 terminates a-t one end into an outlet pipe 70 which is connec-ted to the lid 22 of the container via a pipe 71~
~i~ure 2 is an illustrat:ion of the cold water tank and lid assembly 22 and illustrates the primary and secondary condensers. The rectangular lid 22 is constructed of copper and has a metal base 81 which locates upon a ledge 82 provided in the top of the cold water tank 23~ The pipe 71 ~eeds the steam from the enclosure 43 into a chamber defined by the roo~
80 constituting the primary condenser within the space enclosed within the lid 22. As the steam which escapes from the expansion pipe ~2 passes up the pipe 70 and into the primary condenser via the pipe 71, the majority of the steam condenses into water droplets which collect on the base plate 81 and pour 21~
back down the pipe 71 into the enclosure 43 and from there into the ho-t water -tank.
However, some steam may not condense into droplets and this steam escapes from the primary condenser via a pipe 85 down onto a small brass plate 86 located in the side wall of the cold water tank 23 adjacent the upper level of cold water and constituting the secondary condenser. The cold water has the effect of reducing the temperature o the brass plate 86 so that any remaining steam which does descend the pipe 85 immediately condenses into droplets which fall of~ the plate 86 into the cold water tank.
The provision o:E dual condensers ensures that there is no escape of steam from the dispenser and the secondary condenser particularl~ ensures that the steam does not circula-te within the cold water tank to a) raise the temperature of the cold water; and b) affect the sensiti~e mercury switches~
The dispenser described above is capable of ~uickly producing boiling water because a small quantity o water is initially heated to boiling point in the comparatively small boiling chamber. The dispenser is also capable of storing boiling water in the hot water tank whils-t using only a pilot element 34. As boiling water is drawn off the dispenser, cold water does not enter the hot water chamber but enters the boiling chamber and therefore the temperature in the hot water tank should not drop below boiling point. Furthermore~ various safety devices ensure that there is no dangex that the elements will burn out due to water failure or that overflow of either the hot or cold water tank can take place. The dual condensers ensure there is no escape of steam so that the device can be used withln a room wi-thout danger of escaping steam damaging room furnishlngs. Since -the cold water is fed into a cold water tank any sedimen-t or scale that may enter via the cold water inlet settles in the base of the tank and is unlike to be fed into the boiling chamber and hot water tank.
If the dispenser is switched off with water in the hot water tank and then switched on again when the water has cooled, the cold water can be drained rom the hot tank thereby causing the primary element to operate to quickly produce boiling water.
The dispenser described above may simply be mounted on a wall, plugged into a supply o-f electricity and mains water to produce a completely automatic, economical and eficient boiling water dispenser which is both clean, safe and very hygenic. Not only can boiling water be quickly produced but the hot water tank is sufficiently large to cater for a substantial demand without a drop in temperature of the water output. The dispenser is considered particularly useful for schools, restaurants and hotels where boiling water is frequently required in varying quantities at periodic intervals.
Conventional water heaters suffer from the disadvantage that, as the wa-ter in the heater is removed, the heater has to be replenished with cold water which then mixes with the boiling water within the heater to cause a sudden drop in temperature of the remaining water in the heater~ Liquid storage and heating units have also been proposed in which a cold water tank is separated from the area of the tank con-taining the hot water so that addition of further cold water does not have the e~fect of reducing the temperature of all the water within the tank. However, a problem that can be frequently encountered with such equipment is that the interior of the e~uipment can become clogged with scale and other contamlnants which ma.y enter with the watex supply.
It is an object of the present invention to provide an ~0 im~roved boiling water dispenser.
According to the present invention there is pr~videa a boiling water dispenser comprising a tank for cold water in fluid communication with a boiling chamber, said boiling chamber being positioned within a tank for hot water and having means to boil the water, the boiling chambex having an upwardly extending expansion pipe which is arranged i.n use to feed the boiling water to the hot tank only when the water boils in the boiling chamber,- and an outlet positioned in the `~. 2 hot tank to ~llow boiling wa-ter to be dispensed from the dispenser, the water within the hot tank being maintained at boiling temperature due to conduction of hea-t from the heating means through the boiling chamber~
Preferably the free end of the expansion pipe terminates at a level above the normal static level of water in the cold water tank so that water only escapes to the hot water tank by percolating over the free end of the expansion pipe due to boiling in the boiling chamber. The cold water tank is preferably positioned above the hot water tank and the boiling chamber comprises a glass enclosure fed at one end by a conduit from the cold water tank and having the e~pansion pipe extending upwardly from the opposite end.
In a preferred embodiment a primary heating elemen-t and a pilot heating element are positioned within the boiling chamber. A primary switching means is provided to sense the level of boiling water in the hot tank so that at a predetermined level the primary heating element is cut off leaving only the pilot element to maintain the water within the hot tank at boiling tem erature. A secondary switching means may also be provided to switch off both hea-ting elements in the event of water within the cold water tank ~alling below a predetermined level.
Preferably a condenser is provided to condense steam produced by the boiling chamber to water which is returned to the hot or cold water tank. The condenser preferably comprises a primary condenser formed in the lid of the dispenser and in fluid communica-tion with an enclosure positioned adjacent the free end of the expansion pipe, the steam condensing to water in the lid, which water falls back into the enclosure surrounding the expansion pipe and from there into the hot water tank.
In a preferred embodiment the secondary condenser comprises a conduit extending from the primary condenser down onto a plate located slightly above the full level of water in the cold water tank so that steam not condensed in the primary condenser passes down -the conduit onto the plate and is condensed to water which then falls into the cold water tank.
: 20 - :
~5 ' ~ ~ : '~':
' ':
8~Z~i The present invention will now be described with reference to the accompanying drawings in which:
Figure 1 is a perspec-tive view of a boiling water dispenser in accordance with the present invention; and Figure 2 is a perspective view of an upper part of the dispenser illus-trated in Figure 1.
A boiling water dispenser as illustrated in Figures 1 and 2 comprises an ou-ter rectangular ca~ing 20 having a base 21 and enclosed by a rectangular lid 22. Within the upper part of the casing 20 there is located a rectangular cold wa-ter tank 23 which is fed with cold water viaan inlet pipe 24 and controlled by a conventional float valve 25. A hot water tank 26 is located beneath the cold water tank 23 and is bordered by the base of the outer casing 21 and insulating wall portions 27. An outlet pipe 28 which may be in the form of a ~ispensing tap (not shown) is position2d in the base of the container to allow hot water -to be released from the hot tan~ 26.
Within the lower part of the hot water tank 26 is located a boiling chamber 31 which comprises a copper cylinder 32 mounted with its axis horizontal and arranged to contain a pair of electrical heating elements 34 and 35 which are secured at one end in one end face 37 of the cylinder. The end face 37 of the cylinder is connected to the base of the cold water tank 33 via a conduit 38 which extends through the side wall 27 of the hot water tank. The opposi-te end 40 of the boiling chamber 31 is provided with a vertically ex-tending expansion pipe 42 which extends up through the hot water tank 26 and terminates within an open ended cylindrical enclosure ~3 which is ].ocated in an inverted fashion over the end ~4 of the expansion pipe 42. The end 44 of expansion pipe 42 is arranged to be above -the full level of water in the cold water tank 23.
The level of water in the cold water tank is controlled by the ball valve 25 and an overflow pipe 48 is also provided to ensure against overfilling of the cold water tank due to breakdown of the float valve.
To operate the dispenser the tank 23 is filled with cold water via the inlet 24 and this cold water pours into the boiling chamber 31 via the conduit 38 and up the expansion pipe 42 to find a static level which is common with the level in the cold water tank. At this stage the hot water tank is effectively sealed from the boiling chamber 31 and is empty because the free standing level of the water in the expansîon pipe 42 is below the upper end 4a of the pipe. If the power is then swi~ched on tne electrical heating elements 34 and 35 heat the water within the boiling chamber and the hot water circulates to the top of the expansion pipe q2. Eventually the water within the boiling chamber boils and this has the effect of causing the level in the expansion pipe to rise until the water cascades (arrowed in Figure 1) over the upper end ~4 ana down within the enclosure 43 to fall into the base of the hot water tank 26. The water which falls in the hot water tank 26 is maintained in a-boiling condition by heak from ~he heating elements 34 and 35 which lS conducted through the brass walls of the boiling chamber 31.
As boiling water percolates from the boiling chamber 31 via the expansion pipe 42 it is replenished with cold water at 12iE;
the opposite end 37 of ~he chamber 31 via the conduit 38 connected to the cold water tank 23. Eventually the hot water tank becomes full of boilin~ water to a level at which the boiling wa-ter enters a sealed cylindrical enclosure 50 positioned in the cold water tank and fed via a conduit 51 ~hich extends into the hot water tank 26 as shown in Figure 1. A float 53 is provided in this sealed chamber 50 so that as the hot water enters this chamber the float is lifted to actuate by til~ing a first mercury switch 54 via an arm and spring arrangement 55.
Actuation o the first mercury switch 54 causes the power to be cut off from the primary heating element 35 thereby maintaining the pilot element 34 to maintain the water in the hot ~ank at boiling tempera-ture bu-t not causing boiling water to be ejected from the expansion pipe 42~. When in this condition the dispenser contains a full tank of boiling ~ater which can be drawn ofE from the outlet 28 whilsl: at the same time contains cold water in the cold water tank to replenish any boiling water which may be periodically removed.
As boiliny water is dispensed via the outlet 28, the : 20 level in the sealed enclosure 50 drops and accordingly the float 53 re-actuates the mercury switch 54 to allow the heating element 35 to operate thereby causin~ further percolation of boiling water out of the expansion pipe to top up the hot water tank.
The dispenser also includes a safety device to ensure that neither heating element will operate in the event o~
failure of the cold water supply. A cylindrical enclosure 60 is located adjacent the inlet 2~ of the cold water tank and is provided wi-th a float 61 connected via an arm and spring arranyem2nt 62 to a second mercury switch 63. If the level oE cold water within the scaled chamber 60 drops below a predetermined level, the floa-t sinks to a level at which the secondary mercury switch is closed cut-ting off all power to both heating elements 34 and 35 and -therefore ensuriny against damage to the heating elements. The enclosure 60 surrounding the float 61 is provided to ensure that water entering the cold water tank does not cause undue turbulence of the ~loat 61.
Another feature of the boiling water dispenser is provision of primary and secondary condensers in the roo~ of the unit to ensure that steam generated by the boiling chamber 31 is condensed into water which is returned to hot water and cold water tanks. As shown in Figure 1 the enclosure 43 of the expansion pipe 42 terminates a-t one end into an outlet pipe 70 which is connec-ted to the lid 22 of the container via a pipe 71~
~i~ure 2 is an illustrat:ion of the cold water tank and lid assembly 22 and illustrates the primary and secondary condensers. The rectangular lid 22 is constructed of copper and has a metal base 81 which locates upon a ledge 82 provided in the top of the cold water tank 23~ The pipe 71 ~eeds the steam from the enclosure 43 into a chamber defined by the roo~
80 constituting the primary condenser within the space enclosed within the lid 22. As the steam which escapes from the expansion pipe ~2 passes up the pipe 70 and into the primary condenser via the pipe 71, the majority of the steam condenses into water droplets which collect on the base plate 81 and pour 21~
back down the pipe 71 into the enclosure 43 and from there into the ho-t water -tank.
However, some steam may not condense into droplets and this steam escapes from the primary condenser via a pipe 85 down onto a small brass plate 86 located in the side wall of the cold water tank 23 adjacent the upper level of cold water and constituting the secondary condenser. The cold water has the effect of reducing the temperature o the brass plate 86 so that any remaining steam which does descend the pipe 85 immediately condenses into droplets which fall of~ the plate 86 into the cold water tank.
The provision o:E dual condensers ensures that there is no escape of steam from the dispenser and the secondary condenser particularl~ ensures that the steam does not circula-te within the cold water tank to a) raise the temperature of the cold water; and b) affect the sensiti~e mercury switches~
The dispenser described above is capable of ~uickly producing boiling water because a small quantity o water is initially heated to boiling point in the comparatively small boiling chamber. The dispenser is also capable of storing boiling water in the hot water tank whils-t using only a pilot element 34. As boiling water is drawn off the dispenser, cold water does not enter the hot water chamber but enters the boiling chamber and therefore the temperature in the hot water tank should not drop below boiling point. Furthermore~ various safety devices ensure that there is no dangex that the elements will burn out due to water failure or that overflow of either the hot or cold water tank can take place. The dual condensers ensure there is no escape of steam so that the device can be used withln a room wi-thout danger of escaping steam damaging room furnishlngs. Since -the cold water is fed into a cold water tank any sedimen-t or scale that may enter via the cold water inlet settles in the base of the tank and is unlike to be fed into the boiling chamber and hot water tank.
If the dispenser is switched off with water in the hot water tank and then switched on again when the water has cooled, the cold water can be drained rom the hot tank thereby causing the primary element to operate to quickly produce boiling water.
The dispenser described above may simply be mounted on a wall, plugged into a supply o-f electricity and mains water to produce a completely automatic, economical and eficient boiling water dispenser which is both clean, safe and very hygenic. Not only can boiling water be quickly produced but the hot water tank is sufficiently large to cater for a substantial demand without a drop in temperature of the water output. The dispenser is considered particularly useful for schools, restaurants and hotels where boiling water is frequently required in varying quantities at periodic intervals.
Claims (10)
1. A boiling water dispenser comprising a cold water tank for cold water in fluid communication with a boiling chamber, said boiling chamber being positioned within a hot water tank for hot water and having heating means to boil the water, the boiling chamber having an upwardly extending expansion pipe which is arranged in use to feed the boiling water to the hot tank only when the water boils in the boiling chamber, said ex-pansion pipe having a free end which is located in an upward ex-tension of said hot water tank, and an outlet positioned in the hot tank to allow boiling water to be dispensed from the dis-penser, the water within the hot water tank being maintained at boilding temperature due to conduction of heat from the heating means through the boiling chamber said dispenser further in-cluding a steam condensing chamber which is connected to said upward extension so as to receive steam therefrom and return con-densed water thereto, said condensing chamber having a steam outlet which communicates with the cold water tank, whereby uncondensed steam passes from the condensing chamber to the cold water tank.
2. A dispenser according to claim 1, wherein the free end of the expansion pipe terminates at a level above the normal static level of water in the cold water tank so that water only escapes to the hot water tank by overflowing from the free end of the expansion pipe due to thermal expansion of the water in the boiling chamber.
3. A dispenser according to either claim 1 or claim 2 wherein the cold water tank is positioned above the hot water tank and the boiling chamber comprises an enclosure fed at a con-duit from the cold water tank and having the expansion pipe ex-tending upwardly.
4. A dispenser according to claim 1, wherein a primary heating element and a pilot heating element are positioned within the boiling chamber.
5. A dispenser according to claim 4, wherein a primary switching means is provided to sense the level of boiling water in the hot tank so that at a predetermined level the primary heating element is cut off leaving only the pilot element to maintain the water within the hot tank at boiling temperature.
6. A dispenser according to claim 5, wherein the switching means comprises a float within a chamber located within the cold water tank, the float being connected to a mer-cury switch so that when the level within the float chamber reaches the predetermined level, the mercury switch switches off the primary heating element.
7. A dispenser according to claim 4, wherein a fur-ther switching means is provided to switch off both heating elements in the event that the water within the cold water tank falls below a predetermined level.
8. A dispenser according to claim 7, wherein the further means comprises a float coupled to a mercury switch and positioned within the cold water tank.
9. A dispenser according to claim 1, wherein the level of water in the cold tank is controlled by a float valve.
10. A dispenser as claimed in claim 1, 2 or 4, wherein the steam outlet of the condensing chamber includes a conduit which has its lower end in the cold water chamber and wherein a condensation plate is located adjacent to the lower end of said conduit, said plate serving o condense steam issuing from said conduit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000303835A CA1118026A (en) | 1978-05-23 | 1978-05-23 | Boiling water dispenser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000303835A CA1118026A (en) | 1978-05-23 | 1978-05-23 | Boiling water dispenser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1118026A true CA1118026A (en) | 1982-02-09 |
Family
ID=4111519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000303835A Expired CA1118026A (en) | 1978-05-23 | 1978-05-23 | Boiling water dispenser |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1118026A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005024312A1 (en) * | 2003-09-09 | 2005-03-17 | International Thermal Investments Ltd. | Diesel fired compact and accessible potable water heater |
| US8118239B2 (en) | 2004-05-18 | 2012-02-21 | International Thermal Investments Ltd. | Potable water heater |
| US9074779B2 (en) | 2004-05-18 | 2015-07-07 | International Thermal Investments Ltd. | Distribution module for water heater |
-
1978
- 1978-05-23 CA CA000303835A patent/CA1118026A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005024312A1 (en) * | 2003-09-09 | 2005-03-17 | International Thermal Investments Ltd. | Diesel fired compact and accessible potable water heater |
| US8118239B2 (en) | 2004-05-18 | 2012-02-21 | International Thermal Investments Ltd. | Potable water heater |
| US9074779B2 (en) | 2004-05-18 | 2015-07-07 | International Thermal Investments Ltd. | Distribution module for water heater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |