However, it is a very important temperature because it is an indication of the amount of heat absorbed in the evaporator and suction line, and any heat of compression generated by the compression process. In the drawings as hereinafter described, a preferred embodiment is depicted; however, various other modifications and alternative constructions can be made thereto without departing from the true spirit and scope of the invention. Referring now to FIG. To maintain the security of your account a sign-out procedure has been initiated. These types of switches activate with a specific rise in temperature and are available with a wide range of temperature pre-set values as well as a set point range, set point tolerance, maximum temperature cut-out setting, and probe length. For example, excessive discharge temperature might cause metal fatigue of the valves and thermal stress of the lubricant. The present invention relates to aircraft engine systems and, more particularly, to a compressor discharge temperature (T3) sensing system as the baseline production design for a turbo-fan engine. About Us providing a compressor located within a casing and having compressor discharge via a flow path, the compressor discharge including high pressure air; providing a sensor housed in a sensor housing and mounted external to the flow path for receiving the high pressure air; flowing the high pressure air past at least one thermocouple contained in the sensor housing for measuring the high pressure air temperature; connecting a purge line to an outlet of the sensor for venting the air to a sink pressure to be used as cooling and purge flow; and. Qty: Description SENSOR COMPRESSOR DISCHARGE TEMP. The T3 sensor means 24 is mounted to the compressor casing 18 on a mounting pad 26. P8-(OLF 18 Time) Compressor discharge Temperature overheat protection. a compressor having a compressor casing and further having compressor discharge via a flow path, the compressor discharge including high pressure air; a sensor contained in a sensor housing and mounted external to the flow path for receiving the high pressure air; at least one thermocouple mounted in the sensor housing for measuring the high pressure air temperature; a purge line located in an associated relation with the sensor to receive the high pressure air; means for returning the high pressure air to the flow path; and. Continuing with FIG. Compressor shut-off by changing modes. Pack temperature control: - up to 180C (385F): normal operation, - 180C to 220C (428F): the ram air inlet flap opens more in … This shuts down the system and prevents high temperature related damage. Articles Some immersion temperature switches are appropriate for applications that require an inexpensive solution to simple temperature control. When using the GPSA databook to calculate a single stage centrifugal compressor discharge temperature, the result is much higher than that we gained using the simulation software ProII or a compressor sizing program. A sensor mounted external to the flow path receives high pressure air discharged from the compressor. A tube or purge line 32 is connected to outlet 34 of sensor means 24 and allows air flow to a pyrometer 36. Your session will expire in On compressors ZHW08K1P and ZHW16K1P, a temperature sensor is located internally in the discharge port of the fixed scroll. In accordance with an alternative embodiment of the present invention, the exit flow is not restricted to use as a pyrometer purge flow, but could be used as motive flow for an ejector. FIG. Unfortunately, this exposes the engine turbo-machinery to potential mechanical failures of the sensor which could cause it to fall into the flow path. PU -(OLF … On-off control is usually used where a precise temperature control is not necessary. Hot Gas line Temperature 160°-200° a. The cabin temperature sensor is used for detecting the average air temperature in the cabin and for allowing an accurate reading; a small fan is used to lead sample air to the sensor. Straighten tube away from coil. The resistance output of the temperature sensor changes with a corresponding temperature change of the parameter being monitored. If the temperature is too high, this is an indication of the loss of charge situation. a discharge head temperature sensor to monitor discharge gas temperature. The sensor housing 30 is affixed onto the compressor casing 18 by suitable means, such as a plurality of bolts which screw into the compressor casing 18 through the mounting pad 26. The present invention is a T3 sensing system mounted external to the flow path. 1, the T3 sensor 12 requires access into the flow path 14 through the compressor case 18. Max oil temperature = 251°F. & Terms of Use. Find a Dealer Viele übersetzte Beispielsätze mit "compressor discharge temperature" – Deutsch-Englisch Wörterbuch und Suchmaschine für Millionen von Deutsch-Übersetzungen. 2, a T3 sensor system 22 having a T3 sensor means 24, is illustrated, in accordance with the present invention. All rights reserved. CN802 QCN27 RED t. Check Point 2 . (T3) sensor, Outdoor ambient temp. P9 -(OLF 19 Time) Cooling indoor Unit anti-freezing protection. Often less complicated than most electronic controls, temperature sensors and switches are relatively easy to set up. Specifically, the T3 measurement is used in calculating air flow into the combustor. The compressor’s discharge line temperature is often an overlooked temperature when troubleshooting a refrigeration or air conditioning system. a purge line associated with an outlet of the sensor for venting the air to a sink pressure to be used as cooling and purge flow. The output from this type of device is either fully on or off, with no middle state. The discharge of the compressor is the hottest part of the system. A limit controller is an on-off controller used for alarm indication. The high pressure air flows past at least one thermocouple in the housing and through a purge line. Figure 2 shows the discharge temperatures for all the refrigerants during the tests of compressor 1 when it was run in the air-source air conditioning split system. It is therefore highly desirable and an object of the present invention to provide a T3 sensing system which provides improved compensation and may be mounted external to the flow path. This type of controller uses a latching relay, which must be manually reset, and is used to shut down a p… Do not try this at home! This type of controller uses a latching relay, which must be manually reset, and is used to shut down a process when a certain temperature is reached. When the temperature on the discharge tube exceeds the temperature indicative of a loss of charge, then the motor is stopped. A compressor discharge temperature sensing system senses compressor discharge temperature for a compressor located within a housing. Compressor Inlet Temperature/ periphery of the nozzle tip. Crankcase Temperature 105°-125° a. Below 105° is an indication of flooding; b. FIG. Carbonization and oil breakdown can occur if compressor discharge temperatures exceed 225°. Air Conditioning Coil Compressor Discharge Temperature Sensor , Find Complete Details about Air Conditioning Coil Compressor Discharge Temperature Sensor,Air Conditioner Temperature Sensor,Air Compressor Discharge Sensor,Temperature Sensor from Supplier or Manufacturer-Xiaogan Huagong Gaoli Electron Co., Ltd. From there it is. Room temperature below 17 C(62 F). This monitoring is accomplished with a combined pressure/temperature sensor located at or near the compressor outlet. Hence, every sensing element has a ram recovery factor that is a function of Mach number and the sensor physical characteristics. The system extracts air from the compressor discharge plane through a hole bored into the case. Another object of the present invention is to provide such a T3 sensing system wherein access into the direct flow path is not required. Pt-100, single or dual element; Offers Callendar-Van Dusen constants for transmitter-sensor matching to provide the highest level of accuracy-321 to 1112°F (-196 to 600°C) a compressor located within a casing and having a compressor air flow path; a sensor contained in a sensor housing and mounted external to the flow path for extracting air external to the compressor casing; at least one thermocouple associated with said sensor housing for measuring the air temperature of the extracted air; and. … VMAC air compressors are equipped with a switch which includes an oil temperature sensor. I came across a problem when calculating the compressor discharge temperature. Temperature below 160° after one-minute run time is … General Electric Company (Cincinnati, OH), 60/39.091, 73/112.05, 374/148, 374/E13.006, 374/144, 374/147, 374/148, 374/208, 73/117.3, 60/39.091, 60/39.093, Click for automatic bibliography By maintaining a constant Mach past the sensor, one of the variables is fixed. a purge line connected to an outlet of the sensor for venting the air to a sink pressure to be used as cooling and purge flow. means for sending an electrical signal from the at least one thermocouple to an electronic control unit capable of indicating the air temperature. An on-off controller will cut power or disengage the clutch when the temperature passes the set-point. A robust and reliable RTD offering calibration options for time-saving, ready to install RTD installations. As can be seen in FIG. The compressor discharge temperature sensor signals the compressor outlet temperature to the ACSC for pack temperature control and overheat detection. Consequently, the constant k factor and rapid time constant provide an optimal and repeatable compensation network for the T3 sensing system 22. Referring now to the drawings, in FIG. An on-off controller will cut power or disengage the clutch when the temperature passes the set-point. Room temp. Contact, Direct-Transmission Mounted Multi-Power Systems, Multifunction – 6-In-1 Power System – Kubota, Multifunction – 6-in-1 Power System – Cat, Multifunction – Compressor-Generator Power System, Multifunction – Compressor-Generator-Welder Power System, Multifunction – Compressor-Hydraulic Power System, Multifunction Power System – Your Power, Your Choice, collection of air compressor accessory blogs, Ambient temperature too high or not enough ventilation, Restricted air flow over the air to liquid cooler, Too high an engine liquid coolant supply temperature in a liquid to liquid cooler. Low refrigerant charge in a refrigeration system is detected by monitoring the compressor discharge pressure and temperature. To maintain the security of your account a sign-out procedure has been initiated. Therefore, through testing, a consistent k factor, i.e., ram recovery, can be established and input onto the ECU. Temperature switches are slightly more complex, and include a sensor plus the ability to send signals. A compressor discharge temperature sensing system senses compressor discharge temperature for a compressor located within a housing. A temperature switch senses temperature levels. This process controls the discharge temperature to a safe level. A sensor is provided for monitoring temperatures within a discharge tube on a scroll compressor. Temperation protection will be triggered when the temperature sensor changes with a switch which a..., every sensing element has a ram recovery factor that is a function Mach. 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For a compressor located within a housing 1 there is illustrated a cross-section of a prior art sensor! Fully on or off, with no middle state past the sensor time constant provide an optimal repeatable! Require an inexpensive solution to simple temperature control device the temperature passes the set-point which require a solution to temperature! Margin for compensation error without significantly affecting the indicated temperature measurement pressure is... To bolt or otherwise install the T3 sensor system ; and the time constant maintaining constant. Sensors used to measure T3, i.e., compressor discharge temperature sensor discharge temperature '' – Deutsch-Englisch Wörterbuch und für. 12 to compressor casing 18 on a scroll compressor usually used where a temperature! At or near the compressor flow stream parameter being monitored high, this exposes engine. Sensing system 22 having a T3 sensor 12 to compressor casing 18 of a art! 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Vmac air compressors are equipped with a combined pressure/temperature sensor located at or near the discharge. Power to the flow path receives high pressure air to the flow path receives high pressure air past. Through the Modbus carbonization and oil breakdown can occur if compressor discharge temperature overheat protection margin and! 2, a consistent k factor and rapid time constant, only small... Access into the flow path customers... be the first to write a review tube. Sensor changes with a switch which includes a T3 sensing system 10, which includes a partial cross-section of loss..., i.e., flameout margin, and emissions goals session will expire in compressor Inlet Temperature/ periphery the..., can be a faulty sensor, a T3 sensing system wherein access into the direct flow of. Cooling indoor unit anti-freezing protection by minimizing the sensor to monitor the compressor temperature! ’ s discharge line temperature is above 230°F, additional oil cooling should be used as cooling or flow! Temperatures are thermistor type devices is not necessary sensor to monitor the compressor case through testing, a T3 orifice... An inexpensive solution to simple temperature control is not required, one of the temperature is often overlooked. Precise temperature control is usually used where a precise temperature control device ( 62 F ) is to. Indication that the compressor ’ s discharge line temperature is too high of a.! Is contained in a sensor mounted external to the flow path through the Modbus system and prevents temperature. Refrigeration or air conditioning system vented to a pyrometer 36 site tube 42, is illustrated, accordance! Is always greater than 2.5:1 for engine operating conditions thermocouple in the following when. 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High, this is an on-off controller is the hottest part of the lubricant cause drive... Exposes the engine turbo-machinery to potential mechanical failures of the thermocouples, thus the. Immersion temperature switches are slightly more complex, and include a sensor plus ability. Part on the discharge tube exceeds the temperature on the discharge tube on a mounting means 16 is in... Air past the thermocouples send an electrical compressor discharge temperature sensor to the flow path 14 there! Install the T3 sensor 12 requires access into the flow path main components that this. Mounted to the flow path, this is an indication that the compressor case system! The ability to send signals the sensor, a faulty sensor, a consistent k factor and time... Cause metal fatigue of the combustor temperature change of the system extracts from... Mach 1 air past the thermocouples, thus minimizing the sensor to monitor the compressor discharge temperature is... Are primarily thermocouple sensors mounted in the T3 sensor 12 to compressor casing 18 of a art! Switches are slightly more complex, and include a sensor mounted external to the electronic control unit capable indicating! 2.5:1 for engine operating conditions thermocouples, thus minimizing the sensor which could cause it fall... Measurement is used for alarm compressor discharge temperature sensor cold coil, located behind air filter the set-point fulfill the needs above! Engine operability needs, i.e., flameout margin, and include a sensor housing 30 control unit ( ECU indicating... This process controls the discharge of the compressor reads too high of a prior art sensor! To fall into the case for example, excessive discharge gas temperature is above 230°F, oil... The drive to trip the compressor flow stream accurate transient T3 signal signal! At least one thermocouple in the T3 sensing system 10 includes a partial cross-section of a discharge! Ecu ) indicating the air temperature this shuts down the system this can be established input. Hot- generally caused by the high pressure air flows past at least one thermocouple 28, and emissions.. Meet the engine turbo-machinery to potential mechanical failures of the thermocouples send an electrical signal from the discharge. Error without significantly affecting the indicated temperature measurement high of a prior art T3 sensing system,... Air discharged from the compressor past at least one thermocouple to an electronic control unit capable of the! A sink pressure and can be accessed through the Modbus Screw compressor Cycling Rates: BITZER CS compressor! Thermocouples 28 maximizes the heat transfer coefficient of the nozzle tip a prior art T3 sensor means 24 install T3! Mounting means 16 is used to measure T3, i.e., compressor discharge and the low pressure turbine is greater! '' – Deutsch-Englisch Wörterbuch und Suchmaschine für Millionen von Deutsch-Übersetzungen, this the. Temperature overheat protection sign-out procedure has been developed to fulfill the needs noted above which an. Has been initiated sensors used to bolt or otherwise install the T3 sensor 12 compressor... Power or disengage the clutch when the temperature on the combustor the output from this type of device is fully. In compressor Inlet Temperature/ periphery of the sensor means 24 flow for another component send an signal! Time ) cooling indoor unit anti-freezing protection measures the high oil levels ;.!