A compressor motor rotor temperature control device and an air conditioner

Abstract

This utility model discloses a compressor motor rotor temperature measurement and control device and an air conditioner. The compressor motor rotor temperature measurement and control device includes: a cooling liquid spraying device, a rotor temperature measuring element, a transmission element, a controller, and a power supply system. The spray outlet of the cooling liquid spraying device is connected to the outer wall of the compressor housing. The power supply system is located inside the compressor housing and is connected to the transmission element and the rotor temperature measuring element. The rotor temperature measuring element is located on the male rotor shaft of the compressor, corresponding to the inner circumferential surface of the motor rotor. The transmission element is connected to the rotor temperature measuring element. The controller, transmission element, cooling liquid spraying device, and compressor are all communicatively connected. This utility model achieves precise temperature measurement and control of the motor rotor through the rotor temperature measuring element, transmission element, power supply system, cooling liquid spraying device, and controller.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, specifically to a compressor motor rotor temperature measurement and control device and an air conditioner. Background Technology

[0002] The air conditioning compressor is the core component of the refrigeration system. The compressor motor is generally enclosed inside the compressor. The compressor rotor is driven by the rotation of the motor rotor to compress the gas. When the motor rotor is rotating, the temperature of the motor rotor magnet cannot be tested by conventional means. However, the rotor temperature has a great influence on the magnetism of the motor magnet. This makes it impossible to assess the temperature of the motor rotor during operation to determine whether the compressor motor is reliable. As a result, there is a lack of important basis for assessing the reliability of the motor.

[0003] Some temperature measuring devices are directly installed on the motor rotor, which will affect the magnetism of the magnets in the motor rotor, affecting the normal operation of the motor rotor and temperature detection. In addition, the temperature measuring device is located inside the closed compressor. Most temperature measuring devices are powered by batteries, so the operating time inside the compressor is limited, and they need to be replaced regularly, which is inconvenient to use. Moreover, the motor temperature cannot be reduced in time after temperature measurement, which will lead to motor damage and reduced durability. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a compressor motor rotor temperature measurement and control device and an air conditioner.

[0005] The present invention adopts the following technical solution.

[0006] The first aspect of this utility model discloses a compressor motor rotor temperature measurement and control device, comprising: a coolant spraying device, a rotor temperature measuring element, a transmission element, a controller, and a power supply system. The spray outlet of the cooling liquid spraying device is connected to the outer wall of the compressor housing; The power supply system is located inside the compressor housing and is connected to the transmission element and the rotor temperature sensing element; The rotor temperature sensing element is installed on the male rotor shaft of the compressor at a position corresponding to the inner circumferential surface of the motor rotor. The transmission element is connected to the rotor temperature measuring element; The controller, transmission element, cooling spray device, and compressor are all communicatively connected.

[0007] Preferably, the compressor housing has a compressor suction side and a compressor discharge side, the inner wall of the compressor discharge side is provided with a compressor casting, the compressor suction side is connected through a valve body and a cooling liquid spraying device, and the power supply system is located inside the compressor casting.

[0008] Preferably, the power supply system includes an impeller, a small power generation device, and a conductive ring connected in sequence, wherein the conductive ring is connected to a transmission element and a rotor temperature sensing element.

[0009] The second aspect of this utility model discloses a compressor, including the compressor motor rotor temperature measuring and control device.

[0010] The third aspect of this utility model discloses an air conditioner, including the aforementioned compressor.

[0011] The beneficial effect of this utility model is that, compared with the prior art, This invention achieves precise temperature measurement and control of the motor rotor through a rotor temperature sensing element, a transmission element, a power supply system, a cooling liquid spraying device, and a controller. During compressor operation, the rotor temperature sensing element detects the motor rotor temperature in real time, and the transmission element sends temperature data signals to the controller in real time, thereby realizing real-time monitoring of the motor rotor temperature. At the same time, the controller uses the temperature data to control the opening and closing of the cooling liquid spraying device, adjust the operating status of the compressor, and send warnings. This enables timely reduction of motor temperature and adjustment of compressor status after temperature measurement, avoiding motor damage, improving compressor durability, and enhancing motor operation reliability.

[0012] This invention uses the high-pressure gas compressed by the screw rotor during compressor operation to drive the power supply system, thereby powering the transmission element and the rotor temperature sensing element. This allows the transmission element and the rotor temperature sensing element to operate continuously inside the closed compressor without replacement, making it convenient to use. The conductive ring prevents the circuit from getting tangled during power supply.

[0013] The rotor temperature sensing element of this invention is set on the male rotor shaft of the compressor to avoid affecting the magnetism of the motor rotor. At the same time, the rotor temperature sensing element is located on the inner circumferential surface of the motor rotor, so the temperature detection of the motor rotor is still accurate. Attached Figure Description

[0014] Figure 1 This is a cross-sectional view of a compressor motor rotor temperature measuring and control device according to the present invention; Figure 2 This is a side view of a compressor motor rotor temperature measuring and control device according to the present invention; In the diagram: 1. Motor stator; 2. Motor rotor; 3. Compressor housing; 4. Rotor temperature sensing element; 5. Temperature sensing element lead wire; 6. Transmission element; 7. Small generator; 8. Impeller; 9. Compressor male rotor shaft; 10. Compressor exhaust side; 11. Compressor suction side; 12. Temperature sensing element lead wire channel; 13. Compressor casting; 14. Conductive ring; 15. Screw rotor; 16. Valve body. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. The embodiments described in this application are merely some embodiments of this utility model, not all embodiments. Based on the spirit of this utility model, other embodiments obtained by those skilled in the art without creative effort are all within the protection scope of this utility model.

[0016] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0017] like Figure 1 and Figure 2 As shown in the figure, Embodiment 1 of this utility model discloses a compressor motor rotor temperature control device, including: a cooling liquid spraying device, a rotor temperature measuring element 4, a transmission element 6, a controller, and a power supply system. The compressor housing 3 has a compressor suction side 11 on the right side and a valve body 16 on the outer wall. The valve body 16 is connected to the cooling liquid spraying device. The rotor temperature measuring element 4 is set on the compressor male rotor shaft 9 at a position corresponding to the inner circumferential surface of the motor rotor 2. The rotor temperature measuring element 4 is used to monitor the temperature data collected by the rotor temperature measuring element 4 and transmit it to the controller through the transmission element 6. The controller, the transmission element, the cooling liquid spraying device, and the compressor are all communicatively connected. The controller uses the temperature data to control the cooling liquid spraying device to spray liquid to cool the motor rotor 2, and also controls the compressor to stop and sends a warning.

[0018] The compressor housing 3 is connected to the motor stator 1 on the right inner circumference. The motor rotor 2 is arranged inside the motor stator 1. The motor rotor 2 is connected to the compressor male rotor shaft 9 on the inner side. The compressor male rotor shaft 9 is provided with a screw rotor 15 on the left end. The compressor male rotor shaft 9 is fixed to the rotor temperature sensing element 4 by a thread at the position corresponding to the connection with the motor rotor 2. The compressor male rotor shaft 9 is fixed to the transmission element 6 by a thread at the left position corresponding to the rotor temperature sensing element 4. The transmission element 6 is used to send signals to the controller. The compressor male rotor shaft 9 is provided with a lead wire channel 12. The lead wire channel 12 is provided with a temperature sensing element lead wire 5. The two ends of the temperature sensing element lead wire 5 are respectively connected to the rotor temperature sensing element 4 and the transmission element 6.

[0019] In a specific embodiment, the rotation of the motor rotor 2 drives the compressor male rotor shaft 9 to rotate. The rotor temperature sensing element 4 detects the temperature inside the motor rotor 2 and sends the temperature data to the transmission element 6. The transmission element 6 transmits the temperature data to the controller. The rotor temperature sensing element 4 is set on the compressor male rotor shaft 9 to avoid affecting the magnetism of the motor rotor 2. At the same time, it is located on the inner circumferential surface of the motor rotor 2 to accurately detect the temperature of the motor rotor 2.

[0020] The compressor housing 3 has a compressor suction side 11 on the right side and a compressor discharge side 10 on the upper side. The compressor discharge side 10 has a compressor casting 13 on its inner wall. The compressor suction side 11 is connected to a cooling liquid spray device through a valve body 16. The power supply system is located inside the compressor casting 13. When the compressor is running, the compressor suction side 11 draws in gas, which can bring the liquid sprayed by the cooling liquid spraying device into the compressor. The gas is compressed by the screw rotor 15 to form high-pressure gas. The high-pressure gas flows back to the compressor discharge side 10 and is sprayed out, so that the power supply system operates under the drive of the high-pressure gas.

[0021] The power supply system includes a small generator 7, an impeller 8, and a conductive ring 14 connected in sequence. The small generator 7 is located inside the compressor casting 13 and has an impeller 8 at its upper end. The conductive ring 14 is sleeved on the compressor male rotor shaft 9 at the position corresponding to the outer side of the transmission element 6. The conductive ring 14 is connected to the small generator 7 and does not rotate synchronously with the compressor male rotor shaft 9. The conductive ring 14 connects the transmission element 6 and the small generator 7, thereby supplying power to the transmission element 6 and the rotor temperature sensing element 4, while preventing the circuit from getting tangled when the transmission element 6 rotates with the compressor male rotor shaft 9.

[0022] The controller controls the switching of the cooling liquid spray device and the compressor and issues warnings based on the temperature data of the rotor temperature measuring element 4. This enables timely reduction and adjustment of the motor rotor 2 temperature after temperature measurement, avoiding motor damage, improving compressor durability, and enhancing motor operation reliability.

[0023] Preferably, the rotor temperature sensing element 4 can be a resistor and form a complete circuit with the transmission element 6.

[0024] In a specific embodiment, when the compressor is running, the compressor male rotor shaft 9 rotates, the screw rotor 15 rotates synchronously, and the conductive ring 14 remains stationary. The gas is compressed by the screw rotor 15 to form high-pressure gas, which flows back to the compressor exhaust side 10 and is ejected. The high-pressure gas drives the impeller 8 to rotate and drives the small power generation device 7 to operate. The small power generation device 7 supplies power to the transmission element 6 and the rotor temperature sensing element 4 through the conductive ring 14, so that the transmission element 6 and the rotor temperature sensing element 4 can operate continuously inside the closed compressor without replacement and are easy to use. When the cooling liquid spray device is running, the liquid sprayed from the valve body 6 will follow the gas from the compressor suction side 11 into the compressor to cool the motor rotor 2.

[0025] The beneficial effect of this utility model is that, compared with the prior art, This invention achieves precise temperature measurement and control of the motor rotor through a rotor temperature sensing element, a transmission element, a power supply system, a cooling liquid spraying device, and a controller. During compressor operation, the rotor temperature sensing element detects the motor rotor temperature in real time, and the transmission element sends temperature data signals to the controller in real time, thereby realizing real-time monitoring of the motor rotor temperature. At the same time, the controller uses the temperature data to control the opening and closing of the cooling liquid spraying device, adjust the operating status of the compressor, and send warnings. This enables timely reduction of motor temperature and adjustment of compressor status after temperature measurement, avoiding motor damage, improving compressor durability, and enhancing motor operation reliability.

[0026] This invention uses the high-pressure gas compressed by the screw rotor during compressor operation to drive the power supply system, thereby powering the transmission element and the rotor temperature sensing element. This allows the transmission element and the rotor temperature sensing element to operate continuously inside the closed compressor without replacement, making it convenient to use. The conductive ring prevents the circuit from getting tangled during power supply.

[0027] The rotor temperature sensing element of this invention is set on the male rotor shaft of the compressor to avoid affecting the magnetism of the motor rotor. At the same time, the rotor temperature sensing element is located on the inner circumferential surface of the motor rotor, so the temperature detection of the motor rotor is still accurate.

[0028] Embodiment 2 of this utility model discloses a compressor, including the compressor motor rotor temperature measurement and control device.

[0029] Embodiment 3 of this utility model discloses an air conditioner, including the aforementioned compressor.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of this utility model. Any modifications or equivalent substitutions that do not depart from the spirit and scope of this utility model should be covered within the protection scope of the claims of this utility model.

Claims

1. A compressor motor rotor temperature measurement and control device, comprising: The cooling liquid spraying device, rotor temperature measuring element, transmission element, controller, and power supply system are characterized by: The spray outlet of the cooling liquid spraying device is connected to the outer wall of the compressor housing; The power supply system is located inside the compressor housing and is connected to the transmission element and the rotor temperature sensing element; The rotor temperature sensing element is installed on the male rotor shaft of the compressor at a position corresponding to the inner circumferential surface of the motor rotor. The transmission element is connected to the rotor temperature measuring element; The controller, transmission element, cooling spray device, and compressor are all communicatively connected.

2. The compressor motor rotor temperature measurement and control device according to claim 1, characterized in that: The compressor housing has a compressor suction side and a compressor discharge side. A compressor casting is installed on the inner wall of the compressor discharge side. The compressor suction side is connected through a valve body and a cooling liquid spraying device. The power supply system is located inside the compressor casting.

3. The compressor motor rotor temperature measurement and control device according to claim 1, characterized in that: The power supply system includes an impeller, a small power generation device, and a conductive ring connected in sequence. The conductive ring is connected to a transmission element and a rotor temperature sensing element.

4. A compressor, characterized in that, The compressor motor rotor temperature control device includes any one of claims 1 to 3.

5. An air conditioner, characterized in that, Includes a compressor as described in claim 4.

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