25 results about "Outside air temperature" patented technology

Air conditioning system for a vehicle with an idle-stop function, comprising: an indoor / outdoor air ratio control device (21a, 21b, 28) for controlling an introduction ratio between indoor and outdoor air, wherein the indoor / outdoor air ratio control device (21a, 21b, 28) is installed in a vehicle with an idle-stop function of an engine (11) and has an indoor / outdoor air flap (21a) for switching indoor and outdoor air, which is arranged in an air conditioning duct, which introduces outdoor air from outside a vehicle interior via an outdoor air inlet (21i) and indoor air from inside the vehicle interior via an indoor air inlet (21j) and discharges the outdoor and indoor air into the vehicle interior via a nozzle (21k),wherein the indoor / outdoor air flap (21a) is arranged downstream of the indoor and outdoor air inlet and comprises an indoor / outdoor air flap actuator (21b) for actuating the indoor / outdoor air flap (21a); ​​an air flow rate control device (21c, 28) arranged downstream of the indoor / outdoor air ratio control device in the air conditioning duct and which controls an air flow rate of the air to be introduced; a temperature control device (21d, 28) arranged downstream of the air flow rate control device in the air conditioning duct and which controls the temperature of the introduced air in response to activation of the motor; an air conditioning operating section (29) configured for setting the air flow rate, a temperature, and an indoor / outdoor air mode for air conditioning; and an outdoor air temperature sensing device (31) for sensing the outdoor air temperature, characterized in thatthat the air conditioning system has an air conditioning control unit (28), A / C ECU (28), for performing general control of the air conditioning system, wherein the air conditioning control unit (28) is configured, while the vehicle is in an idle-stop state and the outside air mode is set by the air conditioning operating section (29), to adjust the opening degree of the inside / outside air flap (21a) to a first predetermined opening degree (Θ1) by means of the inside / outside air flap actuator (21b), thereby causing the proportion of outside air to be higher than that of inside air when the outside air temperature (Ta) detected by the outside air temperature sensing device (31) is lower than a first predetermined temperature (T1); to adjust the opening degree of the inside / outside air flap (21a) to a second predetermined opening degree (Θ2) to cause the proportion of inside air to be higher than that of outside air,when the outside air temperature (Ta) is greater than or equal to a second preset temperature (T2), and to adjust the opening degree of the inside / outside air flap (21a) according to the outside air temperature (Ta) to a value between the first preset opening degree (Θ1) and the second preset opening degree (Θ2), when the outside air temperature (Ta) is greater than or equal to the first preset temperature (T1) and lower than the second preset temperature (T2), and the air conditioning control (28) is further configured, while the vehicle is in the idle-stop state, for the air flow control device (21c, 28) to set a blower stage of a blower unit (21c) to a preset blower stage (Lo2) when the blower stage is greater than or equal to the preset blower stage (Lo2), and to maintain the blower stage of the blower unit (21c) at the current stage when the The fan speed is lower than the specified speed (Lo2).

To provide a refrigerator that can prevent freezing (malfunction) of dampers and other components, as well as condensation inside the refrigerator compartment, even when the outside temperature is close to the target temperature of the refrigerator compartment. [Solution] The refrigerator 1 comprises a refrigerator compartment 21, an outside air temperature sensor 101, a control unit 130, a door 21X that opens and closes the opening of the refrigerator compartment 21, and a condensation prevention heater 210 provided in the partition separating the inside and outside of the door 21X. The control unit 130 temporarily activates the heater 210 when the outside air temperature measured by the outside air temperature sensor 101 is below a predetermined threshold.

The utility model discloses a kind of over-temperature dehumidification heat pump unit of heat preservation dew condensation supercooling bridge structure swimming, including dehumidification heat pump machine main body and the cabinet for containing dehumidification heat pump machine main body, cabinet includes several plate bodies and door body;Plate body and door body are all provided with thermostatic regulating system, thermostatic regulating system is used for plate body and door body and outside air temperature temperature dynamic keeping consistent, using the effect that thermostatic regulating system makes plate body and door body and outside air temperature temperature dynamic keeping consistent, prevent the surface of cabinet from dew condensation caused by temperature difference, avoid dew water to cause corrosion and damage to equipment, improve heat preservation effect simultaneously, avoid its damage to internal dehumidification heat pump machine main body.

Provided is a heat pump device with which it is possible to maintain a high-low pressure difference of a refrigerant circulating in a refrigerant circuit at a prescribed value or greater. In a warming mode in which a water heat exchanger (7) is operated as a condenser and an outdoor heat exchanger (15) is operated as an evaporator, and when the outside air temperature is equal to or higher than a first threshold value, the degree of superheating of low-pressure refrigerant suctioned into a compressor is controlled to a prescribed value by a second expansion valve (13), and the high-pressure refrigerant flowing through the water heat exchanger (7) is controlled so as to be equal to or higher than a prescribed value by a first expansion valve (9).

The objective is to provide a refrigeration cycle system that can achieve improved warm-up and heating performance even under low ambient temperature conditions. [Solution] The refrigeration cycle device comprises a compressor, a condenser that performs heat exchange with a unit to be warmed, an expansion valve, an evaporator that vaporizes a refrigerant, and a control unit that controls the dryness of the refrigerant drawn into the compressor. When the unit to be warmed by the refrigeration cycle device is determined to be in an environment with an outside air temperature lower than a predetermined temperature based on the outside air temperature detected by the outside air temperature detection unit, and a warming request is made for the unit to be warmed, the control unit adjusts the opening of the expansion valve to reduce the dryness, which is estimated based on the discharge temperature, condensation temperature, discharge pressure, and compression ratio of the refrigerant, to a range of dryness that enhances the warming function of the refrigeration cycle device, thereby improving the intake density of the refrigerant.

This utility model discloses a ventilation and air exchange device for an explosion-proof analytical cabin. The structure includes a cabin body, a mounting box fixed to the cabin body by screws, a first motor mounted on the mounting box, a ventilation fan connected to the output end of the first motor, a clamp and a rubber ring mounted on the inner wall of the mounting box, and a first filter plate detachably connected inside the clamp; and an air exchange unit including a mixing chamber. In use, the air inside the cabin body is filtered by a second filter plate and then enters a transition chamber. When the external air temperature is low, a one-way solenoid valve is opened, allowing a portion of the indoor air to enter the exhaust chamber through a second pipe and be discharged through a vent. Another portion of the indoor air enters the mixing chamber through the first pipe, mixing with the external cold air to raise its temperature before entering the cabin body. This utilizes waste heat to heat the air, preventing condensation of the external cold air inside the cabin and thus preventing moisture damage to the equipment.

A control device for an air conditioning device comprises: a reception unit that receives an operation stop command; a reading unit that reads an outside air temperature, an enclosed refrigerant amount, and a predetermined refrigerant amount threshold when the operation stop command is received; a refrigerant amount acquisition unit that acquires an indoor-side refrigerant amount for each elapsed time on the basis of a table including a time from a predetermined operation stop and a ratio of a predicted value of the indoor-side refrigerant amount when the time elapses; a comparison unit that compares the indoor-side refrigerant amount with the refrigerant amount threshold; and a determination unit that determines whether to perform a cooling operation for transferring the refrigerant remaining on the indoor heat exchanger side to the outdoor heat exchanger side on the basis of a result of comparison performed by the comparison unit.

A switching range control device (40) mounted on a vehicle for switching a switching range by controlling a drive actuation of a motor (10), wherein the switching range control device (40) comprises: a feedback control device (60) which performs feedback control based on an actual angle (Cen) of the motor (10) and a motor speed (Msp) corresponding to a rotational speed of the motor (10); a feedback value setting unit (63) which sets a feedback value of the motor speed based on the motor speed (Msp) to advance an excitation phase; a current sensor (81, 82) which detects a motor current (Im) flowing through the motor (10);and a current correction unit (84) which corrects a target motor speed (Msp*) corresponding to a target motor speed (10) determined based on a demand switching range, wherein: a temperature of a coolant used in the vehicle is defined as a coolant temperature (Hc); a temperature of an oil used in the vehicle is defined as an oil temperature (Ho); an outside air temperature is defined as an outside air temperature (Ha); the motor current (Im), which is set based on a preset temperature (Hs), is defined as a normalized motor current (Im_N);The current correction unit (84) corrects the motor current (Im) to match the normalized motor current (Im_N) when at least one quantity from the coolant temperature (Hc) and the oil temperature (Ho) and the outside air temperature (Ha) coincides with the set temperature (Hs), and the current correction unit (84) estimates a temperature of the motor (10) based on the motor current (Im) and the normalized motor current (Im_N).

A system and method for monitoring a filter state of an HVAC system in a vehicle, the system including: a blower configured to intake and blow vehicle exterior air; an exterior air temperature sensor configured to determine a temperature of the vehicle exterior air intaken by the blower; an evaporator temperature sensor configured to determine a temperature of an evaporator; and a controller configured to: control an operation of the blower; analyze and determine the filter state based on temperature information determined by the exterior air temperature sensor and the evaporator temperature sensor in a state in which the vehicle exterior air intaken by the blower passes through the filter and the evaporator in sequence; and determine a filter replacement time based on the filter state.

The present invention provides a heat pump device that can ensure a high-low pressure difference of the refrigerant circulating in the refrigerant circuit is greater than or equal to a predetermined value. [Solution] In a heating mode in which the water heat exchanger 7 operates as a condenser and the outdoor heat exchanger 15 operates as an evaporator, and when the outside air temperature is set to a first threshold or higher, the second expansion valve 13 controls the degree of superheating of the low-pressure refrigerant drawn into the compressor to a predetermined value, and the first expansion valve 9 controls the high-pressure refrigerant flowing through the water heat exchanger 7 to be set to a predetermined value or higher.

When the temperature TB of the battery is higher than or equal to a threshold value S and there is a request to cool the battery, the battery is cooled in a second cooling mode in a region where the outside air temperature To is lower than or equal to a threshold value S2. In the second cooling mode, the battery is cooled by heat dissipation from the low-temperature radiator. When the temperature TB is higher than or equal to a threshold value S3, the battery is cooled in a first cooling mode in which the battery is cooled using a refrigeration cycle (refrigerant circuit). In a region where the temperature TB is lower than the threshold value S3 and the outside air temperature To is higher than the threshold value S2, cooling mode switching control is performed.

The present application avoids oil temperature misrecognition and appropriately controls the cooling capacity of the electric component. A control device that controls cooling of a rotating electric machine used for driving a vehicle has an arithmetic unit that performs a prescribed arithmetic process and a storage unit that the arithmetic unit can access, inputs first temperature information of a first temperature detection unit that detects a temperature of a first refrigerant that exchanges heat with the rotating electric machine, second temperature information of a second temperature detection unit that detects a temperature of a second refrigerant that exchanges heat with a winding of the rotating electric machine and is cooled by the first refrigerant, third temperature information of a rotating electric machine temperature detection unit that detects a temperature of the rotating electric machine, and fourth temperature information of an outside air temperature detection unit that detects a temperature of outside air, and verifies the second temperature information using the first temperature information, the second temperature information, the third temperature information, and the fourth temperature information.

A vehicular heat cycle apparatus and a method of ascertaining a refrigerant charge state to appropriately grasp insufficiency of a refrigerant in a refrigerant cycle even in an environment where an outside air temperature is low. The vehicular heat cycle apparatus includes a refrigerant cycle and a heat medium cycle. The heat medium cycle is thermally coupled to the refrigerant cycle. When it is determined that an outside air temperature is lower than a predetermined outside air temperature, a determination operation mode is switched to where an expansion valve is made fully open, and a compressor, a pump, and a heat medium heating device are operated. Thereafter, when a refrigerant temperature exceeds a first predetermined refrigerant temperature, it is determined whether the refrigerant temperature and a refrigerant pressure is lower than a pressure obtained by subtracting a predetermined pressure difference from a saturated vapor pressure curve of the refrigerant.

The present invention aims to provide a heating and dehumidification control method for a vehicle heat pump system that prevents overloading of the heat pump system and improves the performance of the heat pump system by controlling the temperature of the refrigerant circulating in the evaporator to a first set temperature higher than the set temperature when the outside air temperature exceeds a first set temperature range higher than the set temperature of the refrigerant circulating in the evaporator during the operation of the heating and dehumidification mode of the heat pump system under high load conditions, and conversely, controlling the temperature of the refrigerant circulating in the evaporator to a second set temperature higher than the set temperature and lower than the first set temperature when the outside air temperature is below a first set temperature range higher than the set temperature of the refrigerant circulating in the evaporator under low load conditions.

The utility model provides a kind of unmanned aerial vehicle infrared thermal imager, comprising: cabin, infrared thermal imager, first temperature sensor and second temperature sensor, the cabin is equipped with window, infrared glass lens is installed on the window, heating sheet is installed in the position close to infrared glass lens in the cabin, the infrared thermal imager is installed in cabin, and the fixed focus lens of the infrared thermal imager is installed towards window, the first temperature sensor and second temperature sensor are all installed on the cabin, heating sheet is arranged inside, can avoid the temperature difference existing between the temperature inside the fixed focus lens of infrared thermal imager and outside air temperature, so that the surface of fixed focus lens, infrared glass lens is easy to fog blur, affect the effect of aerial photography.

A heat pump system for a hybrid vehicle is capable of engine preheating and cabin heating even at low outside air temperatures, improves fuel efficiency by minimizing engine operation, and improves system operating efficiency by preventing pressure drop of circulating refrigerant. The heat pump system includes a first cooling device, a second cooling device, a cabin heating device, a control valve, a first connection line, a second connection line, and an air conditioner unit, the second line and the second connection line are connected to a condenser to selectively circulate a first cooling liquid and a second cooling liquid, respectively.

The present invention provides an air valve control device that enables the recovery of frozen air valves. [Solution] The device includes a control device 21 that determines whether or not freezing has occurred in the air valve 16, including that the difference between the indicated opening value of the air valve 16 and the detected opening value of the air valve 16 is greater than or equal to a predetermined value, and that the outside air temperature is below a predetermined temperature, and determines whether or not the conditions are met. If the conditions are met and a recovery operation is performed multiple times to cause the air valve 16 to open and close, the control device 21 makes the indicated opening value for the opening operation in the current recovery operation greater than the indicated opening value for the opening operation in the previous recovery operation.

An outside air sensor 60 measures the outside air temperature in an outside air chamber 22, and outputs the measured outside air temperature to a control unit 70. A return air sensor 62 measures the return air temperature of the return air sensor 62, and outputs the measured return air temperature to the control unit 70. In a heat-exchange ventilation mode, the control unit 70 opens an outside air damper 40 and an exhaust damper 42 and closes a central damper 44. In an internal circulation mode, the control unit 70 closes the outside air damper 40 and the exhaust damper 42 and opens the central damper 44. In the internal circulation mode, the control unit 70 detects an abnormality or failure in any of the outside air damper 40, the exhaust damper 42, and the central damper 44 on the basis of the outside air temperature and the return air temperature.

A work machine includes (i) an air cleaner being on the inner side of a motive section relative to a radiator and having an air intake port facing an air intake section of a hood and (ii) an air intake state switcher switchable between an outside air introducing state and a hot air introducing state, wherein in the outside air introducing state, the air intake state switcher causes outside air to be introduced through the air intake port, and in the hot air introducing state, the air intake state switcher causes air to be introduced from a high temperature area hotter than outside air through the air intake port.

A WS heater (2) is provided to a WS (1) of a vehicle and is capable of heating the WS (1). An air conditioning device (3) has: a blower unit (7) capable of adjusting a ratio of an introduction amount of outside air of a vehicle cabin and a circulation amount of inside air of the vehicle cabin; and an air conditioning unit (8) that heats air supplied from the blower unit (7) by an air conditioning heater (35) and blows the air into the vehicle cabin. An outside air temperature sensor (41) detects an outside air temperature. An inside air temperature sensor (42) detects an inside air temperature of the vehicle cabin. An air conditioning ECU (4) drives the WS heater (2) so that the WS (1) does not fog, drives the air conditioning heater (35) so that the inside air temperature of the vehicle cabin becomes a set temperature, and further drives the blower unit (7) so that the ratio of the introduction amount of the outside air of the vehicle cabin is reduced and the ratio of the circulation amount of the inside air of the vehicle cabin is increased, in accordance with the outside air temperature.

An airflow generation system includes: an outside air temperature detector that detects an outside air temperature that is a temperature of an outdoor area; an inside air temperature detector that detects an inside air temperature of a space separated from the outdoor area by a structure that is upright; an airflow generation device that generates airflow that flows along the structure from a ceiling to a floor or from the floor to the ceiling in the space; and a control device that controls the airflow generation device based on the outside air temperature detected and the inside air temperature detected.

An air conditioning device (10) is mounted in a vehicle and performs air conditioning, the air conditioning device comprising: an air conditioning mechanism (13) that includes a heating mechanism (131) and a cooling mechanism (132) and sends conditioned air into the vehicle cabin; an air conditioning sensor group (11) for detecting outside air temperature, temperature inside the vehicle cabin, and an amount of solar radiation; a display unit (121) that displays the operating state of the air conditioning mechanism (13); an input operation unit (122); and a controller (14) that controls operation of the air conditioning mechanism (13) and the image display on the display unit (121). The controller (14) executes a process for acquiring a set temperature on the basis of an input operation performed on the input operation unit (122), a process for calculating a target blowing temperature to be used for temperature control of the conditioned air in at least the air conditioning mechanism (13) on the basis of the set temperature, the outside air temperature, the temperature inside the vehicle cabin (1a), and the amount of solar radiation, and a process for displaying air conditioning air images (61a to 61f) showing the state of the conditioned air on the display unit (121) in a display color corresponding to the target blowing temperature.

[Problem] To more accurately measure biological information during listening to audio by using wireless earphones and provide an alert regarding a change in health condition.　[Solution] Wireless earphones 1-1, 1-2: are provided with ear-type body temperature sensors; transmit, to a wireless terminal 2, periodic measurement results of the body temperature measured in the ears by the ear-type body temperature sensors; and, if an alert message is received from the wireless terminal 2 while playing / outputting audio data, interrupt the output of the audio data or reduce the output volume and output the alert message. The wireless terminal 2 periodically acquires the outside air temperature, and if the acquired outside air temperature and the measurement results of the body temperature received from the wireless earphones 1-1, 1-2 indicate the possibility of a change in the health condition of a user, transmits an alert message indicating said possibility to the wireless earphones 1-1, 1-2.

Vehicle vision sensor system comprehensive: at least one vision sensor (20, 22, 24) with a housing (200) defining a cavity (212) and a sensor element arranged inside the cavity (212), a voltage-controlled heating element wound around the housing (200), a local temperature and humidity sensor (30) arranged near the housing (200) and configured to detect temperature and relative humidity in the cavity (212); and a control unit (40) connected to the local temperature and humidity sensor (30) and an outside air temperature sensor (32), wherein the control unit (40) includes a memory in which commands are stored that cause the control unit (40) to determine a dew point in the cavity (212), to compare the temperature of the cavity (212) with the dew point and to apply a voltage to the voltage-controlled heating element when the temperature of the cavity (212) is below the dew point.

This invention provides a technology for determining whether or not the internal air circulation is functioning correctly in internal air circulation mode. [Solution] The outside air sensor 60 measures the outside air temperature of the outside air chamber 22 and outputs the measured outside air temperature to the control unit 70. The return air sensor 62 measures the return air temperature and outputs the measured return air temperature to the control unit 70. In heat exchange mode, the control unit 70 opens the outside air damper 40 and the exhaust damper 42 and closes the central damper 44. In internal circulation mode, the control unit 70 closes the outside air damper 40 and the exhaust damper 42 and opens the central damper 44. In internal circulation mode, the control unit 70 detects an abnormality or malfunction in any of the outside air damper 40, exhaust damper 42, or central damper 44 based on the outside air temperature and the return air temperature.