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7536867 |
Auger-type ice-making machine
An auger type ice making machine is provided with a freezing cylinder ( 21 ) into which water for making ice is supplied, an ice-scraping auger ( 23 ) for scraping ice formed on the inner surface...
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7494536 |
Method for detecting a fault in an HVAC system
A bypass factor of an evaporator is used to indicate when an air filter of an HVAC is clogged. The bypass factor represents the amount of air that is bypassed without direct contact with the...
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7433890 |
Method and apparatus for storing and retrieving data stored within an associated piece of equipment
A method and apparatus that includes a storage device for securing data about an apparatus. The data is stored in a central location and can be accessed or written based upon privileges granted by...
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7370487 |
Refrigerating cycle device capable of ensuring oil return
Whether or not a flow rate of a circulating refrigerant is higher than a predetermined threshold value is judged and when the flow rate is higher than the predetermined threshold value, the...
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7181922 |
Automotive air conditioner
A cooled air temperature detector detects the temperature of air that has just passed through a refrigerant evaporator. The detector detects air temperatures for a plurality of locations on the...
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7150158 |
Freezing prevention system for refrigeration device and air conditioner using the same
A freezing prevention system for a refrigeration device includes a freezing-prevention temperature sensor for detecting a refrigerant temperature in a refrigerant evaporator, and a control unit for...
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7140191 |
Refrigerator and temperature sensor fixing method in the refrigerator
A direct cooling type refrigerator capable of rapidly and accurately controlling the temperature thereof, reducing the ON/OFF time of its compressor, thereby preventing the temperature deviation of...
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7100383 |
Air conditioner for vehicle capable of recovering vehicle deceleration energy
During the period of deceleration of a vehicle, an air conditioning control unit modifies a target cooling temperature (TEO) of an evaporator to a temperature lower than that before the...
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7032408 |
Refrigerator with internal compartment divisible into independent temperature zones
A refrigerator comprises a refrigerator housing having a compartment, this latter presenting side walls having brackets for at least one removable element for supporting products to be preserved...
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7000414 |
Defrost and refrigerator employing the same
A refrigerator having a main body, and a compressor and an evaporator in the main body, comprises a heat pipe forming a closed loop so as to allow the refrigerant to be circulated therein; a first...
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6840053 |
Temperature control using infrared sensing
A system and method for sensing and controlling the temperature of a heating, ventilation and air conditioning (HVAC) system utilizes an infrared sensor. The infrared sensor is used to detect...
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6708512 |
Vehicle air conditioner with cold accumulator
In a vehicle air conditioner, a cold accumulator is disposed at a downstream air side of an evaporator to be cooled by cold air after passing through the evaporator. A cold accumulating material is...
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6625997 |
Automotive air conditioning system
An automotive air conditioning system is provided comprising a duct for introducing a flow of air into a vehicle cabin, a closed-loop refrigeration circuit including a condenser and an evaporator,...
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6578373 |
Rate of change detector for refrigerant floodback
A floodback detector for refrigerant systems employing any of: minimum suction temperature, temperature rate of change and duration thereof; minimum superheat, superheat rate of change and duration...
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6490876 |
Method and apparatus for de-icing dehumidifier
A method and apparatus for operating a dehumidifier in a de-ice mode is provided wherein the dehumidifier has an evaporator coil, a fan operated by a fan motor to cause a flow of ambient air over...
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6460359 |
Method and device for cool-drying
The present invention concerns a method for cool-drying gas containing water vapor, whereby this gas is guided through the secondary part of a heat exchanger ( 1 ) whose primary part is the...
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6453685 |
Control apparatus and control method for variable displacement compressor
An improved control apparatus for controlling the displacement of a variable displacement compressor. A control valve includes an operating rod, which is urged by a force based on a differential...
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6434958 |
Ambient humidity compensation method for a vehicle climate control system
The control settings of a vehicle climate control system are adjusted in accordance with a relative ambient humidity correction to compensate for variations in relative ambient humidity, and the...
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6427465 |
Compressor control system and method
An apparatus and system for manipulating the air temperature within an interior compartment of a vehicle, the apparatus cycles a compressor between an off and on position based upon a temperature...
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6389824 |
Controller for variable displacement compressor
A controller controls a displacement of a compressor which is installed in a refrigerant circuit of an air-conditioning system. The controller has a pressure difference detector. An air...
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6332329 |
Swash plate type variable displacement compressor
When a solenoid 42 of a flow-rate control valve drive mechanism is demagnetized, a pilot valve 41 is closed for introduction of working pressure into a pressure chamber 35 of a flow-rate control...
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6298673 |
Method of operating a refrigerated merchandiser system
A refrigerated merchandiser system (10) includes a compressor (20), a condenser (30), a display case (100) having an evaporator (40), an expansion device (50), and an evaporator pressure control...
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6293116 |
Humidity control method for a variable capacity vehicle climate control system
An improved vehicle climate control system in which the passenger compartment temperature and humidity are controlled without requiring a humidity sensor. The control is based on the recognition...
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6266967 |
Refrigerant cycle system for vehicle air conditioner
In a refrigerant cycle system for a vehicle air conditioner, when a continuous operation time of a compressor elapses a predetermined time after the compressor operates, operation of the compressor...
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6192698 |
Vehicle-air-conditioning system with cooling degree estimator for left/right temperature control
In an air-conditioning system having two air-conditioning passages serving two different air-conditioning zones but having a cooling degree detector provided in only one of the passages to reduce...
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6161393 |
Control system for mobile air conditioning apparatus
A control system for mobile air conditioning systems for controlling the rate at which the system compressor or clutch is cycled between operational and decreased refrigerant flow, by selectively...
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6138465 |
Method for controlling the temperature of a refrigeration unit and temperature control arrangement for a refrigeration unit
The invention concerns a method for controlling the temperature of a refrigeration unit (1) with a refrigerating compartment (3), a freezing compartment (2) and a common evaporator (4) of a cooling...
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6116036 |
Self regulating device for controlling refrigerators and freezers
A self-regulating device for controlling refrigerating appliances, such as refrigerators or freezers, preferably domestic, which comprise a refrigerating circuit with compressor, evaporator,...
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6109048 |
Refrigerator having a compressor with variable compression capacity
Disclosed is a refrigerator comprising: a compressor having a driving motor with controllable rotation speed, an exterior sensor for sensing an exterior temperature, an evaporator sensor for...
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6092380 |
Method for regulating the cooling performance of an air conditioning system
In a method for the temperature regulation of an air conditioning system having a condenser, an evaporator, an expansion device and a compressor, the stroke of which can be set via a valve, the...
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6038874 |
Refrigeration circuit having series evaporators and modulatable compressor
A refrigeration system having a modulatable compressor and a Rankine cycle refrigeration circuit having at least two evaporators. The flow rate of the compressor is modulated in response to the...
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6029466 |
Method for evaporator temperature control as a function of the outside dew point
A method for controlling the evaporator temperature of an air conditioner as a function of the outside dew point, in which the air temperature and the dew point temperature of the incoming air...
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5992163 |
Process and arrangement for an air conditioner control with an evaporator protected against icing
A process and an arrangement for controlling an air conditioner utilize an evaporator protected against icing and a refrigerant circulating system which includes at least one compressor and the...
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5918476 |
Replacement kit for vehicle air conditioning circuit pressure operable valves
A replacement kit allows the replacement of a pressure operable valve of a vehicle air conditioning circuit, from a mechanically operated valve to an electrically actuated switch. The kit includes...
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5904047 |
Air conditioner control apparatus and method therefor
This invention provides an air conditioner for simultaneously cooling or heating a plurality of rooms by using a single outdoor unit and at least two and more indoor units connected to the outdoor...
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5884497 |
Automotive air conditioner
An automotive air conditioner which is capable of suppressing periodic torque variation in an engine-driven refrigerant compressor while ensuring performance of returning oil thereto to circumvent...
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5826439 |
Method and circuit for on/off control of the compressor of a motor vehicle air conditioner
A method and circuit are provided for on/off control of the compressor of a motor vehicle air conditioner, in which the compressor is shut off when the evaporator temperature measured by an...
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5806327 |
Compressor capacity reduction
The present invention is a method for operating an air conditioner chiller system under high ambient air conditions. When the temperature of the standard discharge saturation temperature increases...
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5675976 |
Controller of air-conditioner
Freezing is prevented when either of two blow ports of a bidirectional blow air-conditioner is closed. A first blowing fan is disposed on one of the sides of a heat exchanger on the utilization...
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5669226 |
Air conditioning apparatus for a vehicle
An air conditioning apparatus for an electric vehicle includes an electrically-driven compressor. A desired temperature is set which relates to one of a temperature of air discharged into a vehicle...
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5533353 |
Method and apparatus for controlling the clutch of an air conditioner system
A method and an apparatus are provided for variably controlling the temperature at which the clutch of an air conditioner compressor is engaged and disengaged. The temperature at which the...
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5522231 |
Apparatus and method for mass flow control of a working fluid
A mass flow control apparatus and method for use in combination with a heat transfer system having a compressor, condenser, expansion valve, evaporator and working fluid in a fluid circuit. The...
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5467605 |
System for preventing fogging in climate control system
A system for preventing fogging in air conditioning systems is disclosed. The system employs a strategy whereby if fogging conditions are present, the temperature of the evaporator is stepped...
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5335514 |
Vehicle air conditioner refrigeration, automatic variable set point evaporator system therefor
A method and software/firmware fixed capacity compressor control system for varying the set point temperature of a evaporator in response to changes in ambient temperature in order to produce...
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5319942 |
Automatic control for an air conditioner
An automatic control for an air conditioner having a compressor motor and a fan motor and a method for its operation are provided. While the control operates both motors to cool an enclosed space,...
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5295363 |
Method and apparatus of controlling a compressor of an air conditioner
A method and apparatus of controlling an air conditioner. The discharge temperature of a compressor and the indoor heat exchanger temperature are steadily controlled to set temperatures as close as...
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5247807 |
Salad bar with replaceable modular refrigerated condiments container
A modular (unitary) refrigerated condiments container is provided for use in a conventional restaurant-type salad bar. The modular refrigerated condiments container comprises a housing having a...
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5218836 |
Measuring evaporator load in an automotive air conditioning system for compressor clutch control using evaporator inlet temperature
An electronic controller receives an evaporator inlet (or outlet) temperature sensor signal and measures the time required for the evaporator to be heated from compressor clutch cut-out to...
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5214930 |
Method for regulating the temperature of a medium by means of a temperature control loop, and a temperature-regulating device for implementing the method
Method and apparatus for controlling a prior art refrigeration system of the type having an evaporator, a variable capacity compressor arrangement, and switching apparatus between a control unit...
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5201862 |
Low refrigerant charge protection method
A microprocessor based control for an automotive air conditioner receives inputs from transducers which measure suction gas pressure and temperature and ambient air temperature and provides outputs...
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