Claims
- 1. An absorption refrigerating machine in which water is used as a refrigerant and a water solution of salt is used as an absorption solution, said machine comprising:a first evaporator; a second evaporator, of which refrigerant is a mixed solution to which the absorption solution is added; a first absorber; a second absorber; a regenerator; a condenser; a solution heat exchanger; a mixed refrigerant tank positioned at a lower portion of said second evaporator; a water supplying passage for supplying water to the refrigerant of said second evaporator; a first flow control means disposed in said water supplying passage; an absorption solution supplying passage for supplying the absorption solution to the refrigerant of said second evaporator; a second flow control means disposed in said absorption solution supplying passage; a mixed refrigerant circulation passage for circulating the mixed refrigerant collected in the lower portion of said second evaporator; concentration detection means mounted to said mixed refrigerant circulation passage; liquid level detection means for detecting liquid level of the mixed refrigerant collected in the lower portion of the second evaporator; and control means for controlling said first flow control means on the basis of an output signal of said concentration detection means and for controlling said second flow control means on the basis of an output signal of said liquid level detection means, wherein absorption heat generated at said second absorber is cooled by said first evaporator.
- 2. An absorption refrigerating machine according to claim 1, wherein said control means comprises memory means for storing a predetermined value of concentration of the mixed refrigerant in said second evaporator and a lower limit value of the liquid level in said second evaporator, and controls said first flow control means such that concentration detected by said concentration detection means becomes the predetermined value stored in said memory means, and controls said second flow control means such that said second flow control means opens said absorption solution supplying passage for a predetermined time interval when the liquid level detected by said liquid level detection means is lower than the lower limit value stored in said memory means.
- 3. An absorption refrigerating machine in which water is used as a refrigerant and a water solution of salt is used as an absorption solution, said machine comprising:a first evaporator; a second evaporator, of which refrigerant is a mixed solution to which the absorption solution is added; a first absorber; a second absorber; a regenerator; a condenser; a solution heat exchanger; a mixed refrigerant tank positioned at a lower portion of said second evaporator; a water supplying passage for supplying water to the refrigerant of said second evaporator; a first flow control means disposed in said water supplying passage; an absorption solution supplying passage for supplying the absorption solution to the refrigerant of said second evaporator; a second flow control means disposed in said absorption solution supplying passage; a mixed refrigerant circulation passage for circulating the mixed refrigerant collected in the lower portion of said second evaporator; concentration detection means mounted to said mixed refrigerant circulation passage; a liquid level switch actuated by the mixed refrigerant collected in the lower portion of the second evaporator; and control means for controlling said first flow control means on the basis of an output signal of said concentration detection means and for controlling said second flow control means on the basis of an output signal of said liquid level switch, wherein absorption heat generated at said second absorber is cooled by said first evaporator.
- 4. An absorption refrigerating machine according to claim 2, wherein said control means comprises memory means for storing a predetermined value of the mixed refrigerant in said second evaporator and controls said first flow control means such that concentration detected by said concentration detection means becomes the predetermined value stored in said memory means, and controls said second flow control means such that said second flow control means opens said absorption solution supplying passage for a predetermined time interval when said liquid level switch is actuated and liquid level is detected by said liquid level switch.
Priority Claims (1)
Number |
Date |
Country |
Kind |
10-069792 |
Mar 1998 |
JP |
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Parent Case Info
This is a continuation application of U.S. application Ser. No. 09/248,129, filed Feb. 10, 1999 now U.S. Pat. No. 6,122,930.
US Referenced Citations (5)
Foreign Referenced Citations (7)
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JP |
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Continuations (1)
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Number |
Date |
Country |
Parent |
09/248129 |
Feb 1999 |
US |
Child |
09/618941 |
|
US |