CA1330878C - Ice making and cool storage apparatus of spray type - Google Patents
Ice making and cool storage apparatus of spray typeInfo
- Publication number
- CA1330878C CA1330878C CA 611352 CA611352A CA1330878C CA 1330878 C CA1330878 C CA 1330878C CA 611352 CA611352 CA 611352 CA 611352 A CA611352 A CA 611352A CA 1330878 C CA1330878 C CA 1330878C
- Authority
- CA
- Canada
- Prior art keywords
- water
- refrigerant
- water tank
- circulating system
- upper space
- 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 - Fee Related
Links
Landscapes
- Other Air-Conditioning Systems (AREA)
Abstract
ICE MAKING AND COOL STORAGE
APPARATUS OF SPRAY TYPE
Abstract of the Disclosure Disclosed is an ice making and cool storage apparatus in which water and a refrigerant in liquid form are sprayed to be brought into direct contact with each other. The apparatus comprises a gastight water tank containing water and a refrigerant substan-tially insoluble in water, and the water pumped out from the bottom of the water tank and recovered heat from a medium used for air-conditioning and the refriger-ant recovered from the top of the water tank and then liquefied are sprayed in an upper space of the water tank to produce ice in sherbet form by direct heat exchange with each other.
APPARATUS OF SPRAY TYPE
Abstract of the Disclosure Disclosed is an ice making and cool storage apparatus in which water and a refrigerant in liquid form are sprayed to be brought into direct contact with each other. The apparatus comprises a gastight water tank containing water and a refrigerant substan-tially insoluble in water, and the water pumped out from the bottom of the water tank and recovered heat from a medium used for air-conditioning and the refriger-ant recovered from the top of the water tank and then liquefied are sprayed in an upper space of the water tank to produce ice in sherbet form by direct heat exchange with each other.
Description
~: 1 ICE MaRING AND COOL 8TORAGE
APPARATU8 OF ~PRAY ~YPE
~echnical Fiel~
The invention relates to an ice making and cool storage apparatus which can be widely utilized for various services including air-conditioning of buildings and industrial cooling.
Ba~ground Art Heat storage (cool storage) utilizing ice made by bringing a refrigerant and water into direct contact with each other is already known. In such a prior art method, a liquid refrigerant was directly discharged into water for heat exchange with the water.
However, a first problem encountered by the prior art method described above is that masses of ice made by heat exchange between the refrigerant and the water float up to the surface level of water thereby obstructing later ice making. With a view to solving such a problem, vertically extending pipes may be employed. In spite of the above arrangement, a new problem arises in that masses of ice tend to clog the outlets of the upstanding pipes.
In an attempt to solve this problem of clogging the pipe outlets with the masses of iC8, a proposal has been made in which a fluidizing agent or a surface active agent such as ethylene glycol or propyrene glycol is added to water to enhance the fluidity. However, in order to r CD: vs B
~ 3 , ~ 7 ~
enhance the fluidity, the fluidizing agent is required in a large amount (about 10% of the amount of water), and various secondary problems including the material cost and disposal of wastes additionally arise.
S Further, because of the tendency of vaporization of the refrigerant in the water, a pressure loss corresponding to the depth of water is inevitable, and the compressor suction pressure is lowered, thereby adversely affecting the coefficient of performance. This leads to various disadvantages, and one of the disadvantages is that a water tank having a large depth cannot be utilized.
æummary of the Invention The present invention solves and obviates the prior art problems and defects pointed out above by providing an ice making and cool storage apparatus of spray type comprising: a gastight water tank containing therein water and a refrigerant substantially insoluble in water; a refrigerant circulating system recovering the refrigerant in gas form from the top of the water tank, liquefying the refrigerant gas and spraying the liquefied refrigerant into an upper space of the water tank; a water circulating system recovering the water from the bottom of the water tank and spraying the water into the upper space of the water tank; and water nozzles connected to the water circulating system and refrigerant nozzles connected to the refrigerant circulating system LCD:v8 r ~
~. 3~7~
disposed in the upper space of the water tank, so that the water sprayed from the water nozzles and the refrigerant sprayed from the refrigerant nozzles are brought into direct contact with each other while falling in the upper space of the water tank and on the surface of the water in the water tank.
According to the present invention, the sprayed water makes direct contact with the similarly sprayed refrigerant in the upper space of the water tank to form drops of ice, and the falling ice drops accumulate on the water surface and gradually migrate toward the lower part of the water tank.
Other objects and advantages of the present invention will become apparent when the specification is read in conjunction with the accompanying drawing.
Brief_Description of the Drawin~
The single figure is a schematic vertical sectional of a preferred embodiment of the ice making and cool storage apparatus according to the present invention.
Description of the Preferred Embodiment Referring to the drawing showing a preferred , ~ embodiment of the present inventiQn~ water and a re-frigerant substantially insoluble~erwater are contained in a gastight heat-insulated water tank 1 made of steel.
The reference numeral 2 generally designates the water (together with ice in sherbet form)l and 2' designates the surface of the water. The reference numeral 3 designates an upper space of the water tank 1 above the water level 2', and this upper space 3 is filled with the refrigerant in gas form.
A water conduit 14 extends to the outside from the bottom of the water tank 1 to return to the interior of the water tank 1 through a water circulating pump 7~
17 and a chilled water heat exchanger 15 and terminates in water nozzles 5 disposed in the upper space 3 of the water tank 1. The above members constitute a water circulating system.
On the other hand, an eliminator 13 is located at the top, that is t above the upper space 3, of the water tank 1, and the refrigerant in gas form passing though this eliminator 13 flows through a refrigerant gas suction conduit 6, a refrigerant compressor 7, a refrigerant condenser 9, an expansion unit 11 such as a gas trap, and a liquid refrigerant con~uit 12 which terminates in refrigerant nozzles 4 disposed in the upper space 3 of the water tank 1, the above members constitute a refrigerant circulating system.
The water nozzles 5 and the refrigerant nozzles 4 are preferably provided in a plurality of pairs so that the sprayed water and the sprayed refrigerant can be thoroughly mixed with each other while falling in the upper space 3 and also on the water surface 2' in the water tank 1.
The operation of the apparatus will now be de-scribed.
The chilled water in~the water tank 1 is pumped out from the bottom of the water tank 1 by the water circulating pump 17 to be seat into the chilled water heat exchanger 15. This chilled water heat exchanger 15 has a chilled water conduit 16 for supplying chilled water to various service facilities including air conditioner coils. The water whose temperature is elevated as a result of heat exchange in the heat ex-changer 15 is fed through the water conduit 14 and sprayed from the water nozzles 5 into the upper space 3 of the water tank 1.
On the other hand, the refrigerant gas warmed in the upper space 3 of the water tank 1 is fed through ~, ~.
i!,, ~ :
the eliminator 13 and the refrigerant gas suction conduit 6 into the refrigerant compressor 7. The refrigerant gas compressed and having its temperature elevated in the compressor 7 is cooled in the refrigerant con-denser 9 by cooling water supplied through a cooling water conduit 10. The cooled refrigerant gas is then subjected to adiabatic expansion and liquefied in the expansion unit 11, and the liquefied refrigerant is fed through the refrigerant conduit 12 to the refrigerant nozzles 4 to be sprayed into the upper space 3 of the water tank 1.
As a result, the water sprayed from the water nozzles 5 makes direct contact with the liquefied refrigerant sprayed from the refrigerant nozzles 4 to form drops of ice, and these ice drops fall to accumu-late on the water surface 2' in the water tank 1.
Ice turns into the form of sherbet and migrates gradually downward to provide the mixture 2 of the water and the ice sherbet.
The chilled water heat exchanger 15 is provided in the illustrated embodiment. However, when so desired, this heat exchanger 15 may be eliminated, and the chilled water in the water tank 1 may be directly circulated to the air conditioner coils. Further, although the water tank 1 of a vertical type is shown, it may be of a horizontal type. Further, the chilled water system leading to the air conditioner coils and the water spraying system may have independent water pumps respec-tively.
Meritorious effects of the apparatus of the present invention will be enumerated as follows:
1) Ice formed by direct contact between the water and the refrigerant accumulates on the water surface from above and merely gradually migrates downward. Therefore, no clogging 7,~
~.
3 ~ 7 ~
:
occurs from the structural aspect.
2) Because of the freedom from the problem of clogging, there is almost no necessity for fluidization. Thus, a fluidizing agent ~such as ethylene glycol) may be required in a very small amount even if such an agent is used.
Such an agent may be utterly unnecessary.
3) Because the ice is made on the surface of water contained in the water tank, there is no restriction on the depth of water in the water tank, and the water tank may have a large dimension in its vertical direction.
While a preferred embodiment of the present invention has been described in detail, it is apparent that the present invention is in no way limited to such a specific embodiment, and various changes and modifications may be made therein without departing from the spirit of the present invention~
. . .
, . -:
APPARATU8 OF ~PRAY ~YPE
~echnical Fiel~
The invention relates to an ice making and cool storage apparatus which can be widely utilized for various services including air-conditioning of buildings and industrial cooling.
Ba~ground Art Heat storage (cool storage) utilizing ice made by bringing a refrigerant and water into direct contact with each other is already known. In such a prior art method, a liquid refrigerant was directly discharged into water for heat exchange with the water.
However, a first problem encountered by the prior art method described above is that masses of ice made by heat exchange between the refrigerant and the water float up to the surface level of water thereby obstructing later ice making. With a view to solving such a problem, vertically extending pipes may be employed. In spite of the above arrangement, a new problem arises in that masses of ice tend to clog the outlets of the upstanding pipes.
In an attempt to solve this problem of clogging the pipe outlets with the masses of iC8, a proposal has been made in which a fluidizing agent or a surface active agent such as ethylene glycol or propyrene glycol is added to water to enhance the fluidity. However, in order to r CD: vs B
~ 3 , ~ 7 ~
enhance the fluidity, the fluidizing agent is required in a large amount (about 10% of the amount of water), and various secondary problems including the material cost and disposal of wastes additionally arise.
S Further, because of the tendency of vaporization of the refrigerant in the water, a pressure loss corresponding to the depth of water is inevitable, and the compressor suction pressure is lowered, thereby adversely affecting the coefficient of performance. This leads to various disadvantages, and one of the disadvantages is that a water tank having a large depth cannot be utilized.
æummary of the Invention The present invention solves and obviates the prior art problems and defects pointed out above by providing an ice making and cool storage apparatus of spray type comprising: a gastight water tank containing therein water and a refrigerant substantially insoluble in water; a refrigerant circulating system recovering the refrigerant in gas form from the top of the water tank, liquefying the refrigerant gas and spraying the liquefied refrigerant into an upper space of the water tank; a water circulating system recovering the water from the bottom of the water tank and spraying the water into the upper space of the water tank; and water nozzles connected to the water circulating system and refrigerant nozzles connected to the refrigerant circulating system LCD:v8 r ~
~. 3~7~
disposed in the upper space of the water tank, so that the water sprayed from the water nozzles and the refrigerant sprayed from the refrigerant nozzles are brought into direct contact with each other while falling in the upper space of the water tank and on the surface of the water in the water tank.
According to the present invention, the sprayed water makes direct contact with the similarly sprayed refrigerant in the upper space of the water tank to form drops of ice, and the falling ice drops accumulate on the water surface and gradually migrate toward the lower part of the water tank.
Other objects and advantages of the present invention will become apparent when the specification is read in conjunction with the accompanying drawing.
Brief_Description of the Drawin~
The single figure is a schematic vertical sectional of a preferred embodiment of the ice making and cool storage apparatus according to the present invention.
Description of the Preferred Embodiment Referring to the drawing showing a preferred , ~ embodiment of the present inventiQn~ water and a re-frigerant substantially insoluble~erwater are contained in a gastight heat-insulated water tank 1 made of steel.
The reference numeral 2 generally designates the water (together with ice in sherbet form)l and 2' designates the surface of the water. The reference numeral 3 designates an upper space of the water tank 1 above the water level 2', and this upper space 3 is filled with the refrigerant in gas form.
A water conduit 14 extends to the outside from the bottom of the water tank 1 to return to the interior of the water tank 1 through a water circulating pump 7~
17 and a chilled water heat exchanger 15 and terminates in water nozzles 5 disposed in the upper space 3 of the water tank 1. The above members constitute a water circulating system.
On the other hand, an eliminator 13 is located at the top, that is t above the upper space 3, of the water tank 1, and the refrigerant in gas form passing though this eliminator 13 flows through a refrigerant gas suction conduit 6, a refrigerant compressor 7, a refrigerant condenser 9, an expansion unit 11 such as a gas trap, and a liquid refrigerant con~uit 12 which terminates in refrigerant nozzles 4 disposed in the upper space 3 of the water tank 1, the above members constitute a refrigerant circulating system.
The water nozzles 5 and the refrigerant nozzles 4 are preferably provided in a plurality of pairs so that the sprayed water and the sprayed refrigerant can be thoroughly mixed with each other while falling in the upper space 3 and also on the water surface 2' in the water tank 1.
The operation of the apparatus will now be de-scribed.
The chilled water in~the water tank 1 is pumped out from the bottom of the water tank 1 by the water circulating pump 17 to be seat into the chilled water heat exchanger 15. This chilled water heat exchanger 15 has a chilled water conduit 16 for supplying chilled water to various service facilities including air conditioner coils. The water whose temperature is elevated as a result of heat exchange in the heat ex-changer 15 is fed through the water conduit 14 and sprayed from the water nozzles 5 into the upper space 3 of the water tank 1.
On the other hand, the refrigerant gas warmed in the upper space 3 of the water tank 1 is fed through ~, ~.
i!,, ~ :
the eliminator 13 and the refrigerant gas suction conduit 6 into the refrigerant compressor 7. The refrigerant gas compressed and having its temperature elevated in the compressor 7 is cooled in the refrigerant con-denser 9 by cooling water supplied through a cooling water conduit 10. The cooled refrigerant gas is then subjected to adiabatic expansion and liquefied in the expansion unit 11, and the liquefied refrigerant is fed through the refrigerant conduit 12 to the refrigerant nozzles 4 to be sprayed into the upper space 3 of the water tank 1.
As a result, the water sprayed from the water nozzles 5 makes direct contact with the liquefied refrigerant sprayed from the refrigerant nozzles 4 to form drops of ice, and these ice drops fall to accumu-late on the water surface 2' in the water tank 1.
Ice turns into the form of sherbet and migrates gradually downward to provide the mixture 2 of the water and the ice sherbet.
The chilled water heat exchanger 15 is provided in the illustrated embodiment. However, when so desired, this heat exchanger 15 may be eliminated, and the chilled water in the water tank 1 may be directly circulated to the air conditioner coils. Further, although the water tank 1 of a vertical type is shown, it may be of a horizontal type. Further, the chilled water system leading to the air conditioner coils and the water spraying system may have independent water pumps respec-tively.
Meritorious effects of the apparatus of the present invention will be enumerated as follows:
1) Ice formed by direct contact between the water and the refrigerant accumulates on the water surface from above and merely gradually migrates downward. Therefore, no clogging 7,~
~.
3 ~ 7 ~
:
occurs from the structural aspect.
2) Because of the freedom from the problem of clogging, there is almost no necessity for fluidization. Thus, a fluidizing agent ~such as ethylene glycol) may be required in a very small amount even if such an agent is used.
Such an agent may be utterly unnecessary.
3) Because the ice is made on the surface of water contained in the water tank, there is no restriction on the depth of water in the water tank, and the water tank may have a large dimension in its vertical direction.
While a preferred embodiment of the present invention has been described in detail, it is apparent that the present invention is in no way limited to such a specific embodiment, and various changes and modifications may be made therein without departing from the spirit of the present invention~
. . .
, . -:
Claims (7)
1. An ice making and cool storage apparatus of spray type comprising: a gastight water tank containing therein water and a refrigerant substantially insoluble in water; a refrigerant circulating system for recovering said refrigerant in gas form from the top of said water tank, liquefying the refrigerant gas and spraying the liquefied refrigerant into an upper space of said water tank; a water circulating system for recovering the water from the bottom of said water tank and spraying the water into the upper space of said water tank; and water nozzles connected to said water circulating system and refrigerant nozzles connected to said refrigerant circulating system disposed in the upper space of said water tank so that he water sprayed from said water nozzles and the refrigerant sprayed from said refrigerant nozzles are brought into direct contact with each other while falling in the upper space of said water tank and on the surface of the water in said water tank.
2. An apparatus according to Claim 1, further comprising a heat exchanger located midway of said water circulating system so as to supply chilled water from said heat exchanger as a result of heat exchange.
3. An apparatus according to Claim 1, wherein the water flowing through said water circulating system is directly circulated to an air conditioner.
4. An apparatus according to Claim 1, wherein a chilled water system connected to an air conditioner and having a water pump is provided independently of said water circulating system.
5. An apparatus according to Claim 1, wherein said water tank is of a heat-insulated vertical type.
6. An apparatus according to Claim 1, wherein said water tank is of a heat-insulated horizontal type.
7. An apparatus according to Claim 1, wherein said refrigerant circulating system forms a loop which is traced from an eliminator located at the top of said water tank and passes through a refrigerant compressor, a refrigerant condenser and an expansion unit to return to the upper space of said water tank.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63249910A JP2623129B2 (en) | 1988-10-05 | 1988-10-05 | Spray-type ice heat storage device |
| JP249,910/88 | 1988-10-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1330878C true CA1330878C (en) | 1994-07-26 |
Family
ID=17200015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 611352 Expired - Fee Related CA1330878C (en) | 1988-10-05 | 1989-09-14 | Ice making and cool storage apparatus of spray type |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2623129B2 (en) |
| CA (1) | CA1330878C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110500833A (en) * | 2019-08-27 | 2019-11-26 | 华北水利水电大学 | A kind of direct contact type fluidised form ice slurry preparation device and preparation method |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104236198B (en) * | 2014-09-23 | 2016-08-24 | 珠海格力电器股份有限公司 | Water circulation refrigerating system and method for preventing freezing and cracking of water circulation refrigerating system |
| CN104990337B (en) * | 2015-06-19 | 2017-07-07 | 青岛华控能源科技有限公司 | Recirculating cooling water system and its method |
| JP6712200B2 (en) * | 2016-08-25 | 2020-06-17 | 大陽日酸株式会社 | Slurry ice manufacturing method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU592216B2 (en) * | 1986-10-17 | 1990-01-04 | Cbi Research Corporation | Direct contact evaporator/freezer |
-
1988
- 1988-10-05 JP JP63249910A patent/JP2623129B2/en not_active Expired - Lifetime
-
1989
- 1989-09-14 CA CA 611352 patent/CA1330878C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110500833A (en) * | 2019-08-27 | 2019-11-26 | 华北水利水电大学 | A kind of direct contact type fluidised form ice slurry preparation device and preparation method |
| CN110500833B (en) * | 2019-08-27 | 2021-05-11 | 华北水利水电大学 | Direct contact type flow state ice slurry making device and making method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02101366A (en) | 1990-04-13 |
| JP2623129B2 (en) | 1997-06-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100449226C (en) | Ammonia/CO2refrigeration systems, CO2brine production systems for use therein, and ammonia cooling units incorporating such production systems | |
| CA2260157C (en) | Evaporator refrigerant distributor | |
| KR100632530B1 (en) | Compact absorption chiller and solution flow method for the absorption chiller | |
| US4408654A (en) | Accumulator for storing heat or cold | |
| EP0580276B1 (en) | Refrigeration system for a natural gas liquefaction process | |
| CN1184923A (en) | Chiller with hybrid falling film evaporator | |
| CA1330878C (en) | Ice making and cool storage apparatus of spray type | |
| US2434374A (en) | Unitary refrigerated carbonated beverage dispensing apparatus | |
| US5572883A (en) | Cold storage apparatus | |
| US4377402A (en) | CO2 Snow-making process | |
| JPH02133309A (en) | System and method for dispensing liquid carbon dioxide | |
| US5475982A (en) | Method for storing a coolant fluid in melting equilibrium | |
| JPH11257808A (en) | Refrigerating device having ice storage container | |
| US4420317A (en) | Process for recovering vaporized solvent which eliminates heat exchangers | |
| US2016056A (en) | Liquid circulating system | |
| US4220015A (en) | Hydraulic fluid cooling system | |
| JPS6438129A (en) | Dehumidifying apparatus with ice heat accumulating function | |
| CN107339839A (en) | A kind of novel energy-conserving moves ice machine | |
| US3041854A (en) | Refrigeration system for heat exchangers | |
| CA1195130A (en) | Slush ice maker | |
| CN214987603U (en) | Secondary refrigerant circulating system | |
| JP3901839B2 (en) | Cooling mechanism and cooling method for plastic molding apparatus | |
| GB2179129A (en) | Apparatus for cooling and dispensing drinks | |
| JPH0579662A (en) | Direct contact type air cooling device | |
| CA1195131A (en) | Method and apparatus for removing condensate and oil particles from a stream of compressed air used in the production of snow |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |