Vacuum cleaner
First Claim
1. A vacuum cleaner for killing noxious small organisms comprising:
- a body having a dust chamber in which the organisms are trapped, an electric air blower for circulating heated exhaust air through said chamber,means for storing a predetermined temperature corresponding to a temperature fatal to noxious small organisms;
a thermistor element fixed to a bracket of said air blower for sensing the temperature of said heated exhaust air and of the surface of the electric air blower;
means for judging if the temperature sensed by said sensing means reaches said predetermined temperature and for outputting a first signal when this occurs;
means operating separately from but simultaneously with said sensing means for timing a specified interval from a point of time when said electric air blower is started and for outputting a second signal when a timed period corresponds to said specified interval; and
protection means receiving and responsive to the earliest occurring of the first signal outputted from said judging means or the second signal outputted from said timer means for stopping the supply of electric power to said electric air blower to protect said electric air blower.
1 Assignment
0 Petitions
Accused Products
Abstract
A vacuum cleaner for killing noxious small organisms trapped in a dust chamber of the cleaner body by circulating heated exhaust of an electric air blower through the dust chamber, the cleaner having a temperature sensing element for sensing a temperature in the dust chamber, a timer for timing a specified interval from a point of time when the electric air blower is started to kill the noxious small organisms with heat, and a microcomputer for stopping the supply of electric power to the electric air blower when a temperature sensed by the temperature sensing element reaches a temperature fatal to the noxious small organisms or when the timer has timed the specified interval with the sensed temperature being lower than the predetermined temperature.
31 Citations
8 Claims
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1. A vacuum cleaner for killing noxious small organisms comprising:
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a body having a dust chamber in which the organisms are trapped, an electric air blower for circulating heated exhaust air through said chamber, means for storing a predetermined temperature corresponding to a temperature fatal to noxious small organisms; a thermistor element fixed to a bracket of said air blower for sensing the temperature of said heated exhaust air and of the surface of the electric air blower; means for judging if the temperature sensed by said sensing means reaches said predetermined temperature and for outputting a first signal when this occurs; means operating separately from but simultaneously with said sensing means for timing a specified interval from a point of time when said electric air blower is started and for outputting a second signal when a timed period corresponds to said specified interval; and protection means receiving and responsive to the earliest occurring of the first signal outputted from said judging means or the second signal outputted from said timer means for stopping the supply of electric power to said electric air blower to protect said electric air blower. - View Dependent Claims (2, 3, 4, 5)
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6. A vacuum cleaner for killing noxious small organisms comprising:
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a body having a dust chamber in which the organisms are trapped, an electric air blower for circulating heated exhaust air through said chamber, means for storing a predetermined temperature corresponding to a temperature fatal to noxious small organisms; means for sensing a temperature related to said heated exhaust; means for judging if the temperature sensed by said sensing means reaches said predetermined temperature and for outputting a first signal when this occurs; means operating separately from but simultaneously with said sensing means for timing a specified interval from a point of time when said electric air blower is started and for outputting a second signal when a timed period corresponds to said specified interval; protection means receiving and responsive to the earliest occurring of the first signal outputting from said judging means or the second signal outputted from said timer means for stopping the supply of electric power to said electric air blower to protect said electric air blower; second means for storing an unusual temperature representing a malfunction of said sensing means, second judging means for protruding a third signal when a temperature sensed by said sensing means is said unusual temperature, and means responsive to said third signal for informing of the malfunction of said sensing means. - View Dependent Claims (7)
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8. A vacuum cleaner for killing noxious small organisms comprising:
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a body having a dust chamber in which the organisms are trapped, an electric air blower for circulating heated exhaust air through said chamber, means for storing a predetermined temperature corresponding to a temperature fatal to noxious small organisms; means for sensing a temperature related to said heated exhaust; means for judging if the temperature sensed by said sensing means reaches said predetermined temperature and for outputting a first signal when this occurs; means operating separately from but simultaneously with said sensing means for timing a specified interval from a point of time when said electric air blower is started and for outputting a second signal when a timed period corresponds to said specified interval; protection means receiving and responsive to the earliest occurring of the first signal outputted from said judging means or the second signal outputted from said timer means for stopping the supply of electric power to said electric air blower to protect said electric air blower; indicating means having a plurality of indicators whose indication states respectively vary in accordance with the temperature sensed by said sensing means, said indicator means comprising first and second indicators for indicating living and dead states of noxious small organisms and an indication control circuit for controlling said first and second indicators so that said first indicator lights up at the beginning of killing the noxious small organisms, said first and second indicators alternately light up and out during the killing of the noxious small organisms and both said indicators light up when the temperature in said dust chamber reaches a temperature fatal to the noxious small organisms.
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Specification