SE500273C2

SE500273C2 - KITCHEN FAN

Info

Publication number: SE500273C2
Application number: SE8902800A
Authority: SE
Inventors: Hans Gunnar Lind
Original assignee: Electrolux Ab
Priority date: 1989-08-22
Filing date: 1989-08-22
Publication date: 1994-05-24
Also published as: SE8902800D0; FI96061B; FI96061C; DK172836B1; DK200390A; DE4026296A1; NO903654L; DK200390D0; NO903654D0; FI904142A0; SE8902800L

Abstract

A switch (22) controlled by the withdrawable screen (15), switches the electric motor (13) on and off. A control device is provided for the stepless control of the motor r.p.m. according to the position of the screen. The control device (24) is a slide resistance. A follower is arranged at the rear edge of the screen (15). which, upon withdrawal of the screen, works in conjunction with the slider (25) of the resistance. The slider resistance is spring loaded to hold it in its rear end position. USE/ADVANTAGE - Fume exhaust hook. Gives improved control and is simpler to operate.

Description

580 273 I fig. 2 visas köksfläkten med skärmen 15 i inskjutet läge, vilket är det läge den intar, då köksfläkten ej är i drift. Den sneda styrytan 26 samverkar med kontakternas 20, 22 manöverdon och när skärmen utdrages en kortare sträcka, så att styrytan passerar kontakten 20, omställes denna till läget i fig. 2, varvid lamporna 16 tänds. Vid ytterligare utdragning av skärmen 15 kommer även kontakten 22 att omställas, varvid motorn 13 börjar arbeta vid sin lägsta hastighet. Fig. 2 shows in Fig. 2 the kitchen fan with the screen 15 in the retracted position, which is the position it assumes when the kitchen fan is not in operation. The inclined guide surface 26 cooperates with the actuators of the contacts 20, 22 and when the screen is extended a shorter distance, so that the guide surface passes the contact 20, it is adjusted to the position in Fig. 2, whereby the lamps 16 are lit. Upon further extension of the screen 15, the contact 22 will also be switched, whereby the motor 13 starts to operate at its lowest speed.

Om skärmen 15 från detta läge utdrages ännu ett stycke, kommer med- bringaren 2? att ingripa med styrorganets 24 skjutreglage 25. Fortsatt utdragning av skärmen medför att skjutreglaget successivt omställes, varvid motorns hastig- het steglöst ökar tills reglaget intar läget i fig. 2. I detta läge arbetar motorn vid sin högsta hastighet och fläktens 12 sugeffekt är följaktligen maximal. Skjut- reglaget 25 är fjäderpåverkat att inta sitt vänstra ändläge och då skärmen 15 inskjutes kommer således styrorganet 24 och kontakterna 20, 22 att påverkas i omvänd ordning, så att fläktens 12 hastighet successivt minskar, varefter motorn 13 stängs av helt och slutligen lamporna 16 släcks.If the screen 15 is pulled out of this position one more piece, will the carrier 2? to engage with the slider 25 of the control member 24. Continued extension of the screen causes the slider to be gradually adjusted, whereby the speed of the motor increases steplessly until the control takes the position in Fig. 2. In this position the motor operates at its highest speed and the suction power of the fan 12 is consequently maximum. . The slider 25 is spring-actuated to assume its left end position and when the screen 15 is pushed in, the control means 24 and the contacts 20, 22 will thus be actuated in reverse order, so that the speed of the fan 12 gradually decreases, after which the motor 13 is switched off completely and finally the lamps 16 are switched off. .

Av det ovanstående framgår att den beskrivna köksfläktens funktion helt och hållet kan regleras endast genom omställning av den utdragbara skärmen i olika lägen och utan att några ytterligare manöverdon erfordras.From the above it appears that the function of the described kitchen fan can be regulated completely only by adjusting the extendable screen in different positions and without any additional actuators being required.

Claims

A kitchen fan intended for use with a stove for sucking up vapors and gases generated during cooking and comprising a housing (10) with a suction fan (12), which is driven by an electric motor (14), a substantially horizontally extendable screen (15) and a contact means (22) actuatable by the screen for starting and shutting off the motor, characterized by a control means (24) actuatable by the screen (15) and arranged to steplessly regulate the rotational speed of the motor (13) in depending on the position of the screen (15).