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公开(公告)号：US3360031A
公开(公告)日：1967-12-26
申请号：US42288264
申请日：1964-12-28
Applicant: SVENSKA FLAEKTFABRIKEN AB
Inventor： SIGVARD MATTS , LARS-OWE GRUDEBORN
Abstract: 1,038,020. Air conditioning; heating and cooling buildings. SVENSKA FLAKTFABRIKEN A.B. Dec. 21, 1964, No. 51927/64. Headings F4V and F4U. In an induction type air conditioning system secondary air is treated in the heat exchangers mounted in the induction units before mixing with primary air and the liquid medium supplied to these heat exchangers is maintained at a temperature common for the whole plant and lower than the temperature of the secondary air, the temperature of the primary air being regulated in dependence on the outdoor conditions. In Fig. 4, 1 designates the heat exchangers within the induction units, 2 a heat exchanger forming part of the central air conditioning plant and 3 pipe lines forming a closed circuit between heat exchangers 1 and 2. 4 and 6 are circulation pumps, pump 6 maintaining through a by-pass line 7 a constant liquid flow through the heat exchanger 2 regardless of the number of heat exchangers 1 being used. During winter, heat is supplied by heated primary air, but in order to eliminate simultaneous cooling by the heat exchangers 1, the heated medium is passed to heat exchanger 2 through which the primary air 5 is taken in. In order to prevent moisture forming on heat exchangers 1 the medium is maintained at a temperature which is above the dew point temperature of the room air by introducing into the circuit a quantity of heated medium from a separate heat source at 8 and withdrawing a corresponding quantity of the medium at 9. In order to maintain, during fluctuations of outdoor air temperature, the medium at a desired temperature quantities of warm or cold medium are added to the circuit, the warm medium added as previously described and the cold medium added at 12 with a corresponding quantity discharged at 13. When the ventilating air 5 is too hot to cool the medium in heat exchanger 2, the medium is maintained at the desired temperature solely by the cold medium supplied at 12, circuit 3a, Fig. 5. If in this case, should the ventilating air also require cooling, a separate cold medium supply line 19 is used regulated by valve 20 which is governed by thermostat 22 located in the air flow 5, the cold medium passing straight to the heat exchanger 2 around circuit 3b. Any warm or cold medium added to the circuit is always added to the circuit immediately after the corresponding quantity has been withdrawn.
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公开(公告)号：US3174507A
公开(公告)日：1965-03-23
申请号：US21905262
申请日：1962-08-23
Applicant: SVENSKA FLAEKTFABRIKEN AB
Inventor： SIGVARD MATTS , BRUNO EKELUND
IPC: F24F11/02
CPC classification number: F24F11/72 , Y10T137/8601 , Y10T137/87877
Abstract: 1,001,560. Ventilation. SVENSKA FLAKTFABRIKEN A.B. May 23, 1962 [May 25, 1961], No. 19916/62. Heading F4V. In a ventilating system comprising a distribution duct 3, a fan 2 and two or more air outlets 4, 5 adjusted by means of dampers and located at a relatively large distance from the fan, a device is provided for maintaining constant the static pressure in the duct near the outlets, the device consisting of a pressuresensitive means 6 connected to a branch duct narrow in relation to the main duct 3 and disposed close to the fan outlet, the pressuresensitive means 6 controlling a fan output adjusting device 12 through a servomotor 7. Upstream of the means 6 in the branch duct there is a throttle 9 having similar pressure-fall characteristics to that of the distribution duct up to said air outlets and in the outlet of the branch duct a damper 10 operated by the pressure-sensitive means 6 so that the position of the damper 10 will correspond approximately to the average position of the dampers of the air outlets. In operation if dampers of the air outlets are nearly all closed the air consumption will be small, and the output of the fan will be reduced to maintain the desired static pressure near these outlets. The setting of the throttle 9 is adjustable.
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公开(公告)号：US2884087A
公开(公告)日：1959-04-28
申请号：US61350656
申请日：1956-10-02
Applicant: SVENSKA FLAEKTFABRIKEN AB
Inventor： SIGVARD MATTS
IPC: B03C3/74
CPC classification number: B03C3/74
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