JPH10111051A - Compressor temperature detecting sensor retaining device for air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To securely retain a compressor temperature detecting sensor even at a high temperature by an annular metallic sensor retaining plate. SOLUTION: In a compressor temperature-detecting sensor, the inner diameter of an annular metallic sensor retaining plate 18 for retaining a sensor main body 141 so as to be contacted closely to a compressor is specified so as to be smaller than the maximum profile of caulking of a detecting surface protecting metallic plate 142 as well as the maximum profile of a terminal 143 but larger than the profile of the sensor main body 141, formed so as to have a cylindrical configuration. Further, the compressor temperature detecting sensor is constituted so as to be retained while being contacted closely with the compressor by a method wherein the inner periphery of the metallic sensor retaining plate 18 is abutted against the cylindrical caulking part of the detecting surface protecting metallic plate 142 and the outer periphery of the same is contacted closely with a part of a terminal protecting cover of the compressor.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner, and more particularly to an air conditioner equipped with a microcomputer, which protects the compressor from operation when refrigerant gas is released from a refrigeration cycle or when overloaded. It is connected to the holding device of the sensor that detects the temperature.

[0002]

2. Description of the Related Art Conventionally, in order to protect a compressor in an air conditioner, an overload relay responding to a temperature or an operating current and a compressor temperature detecting sensor for detecting a compressor temperature are closely attached to the compressor surface. In addition, a rubber-made sensor holder was added to the compressor, and a terminal protection cover for protecting the terminal of the compressor was fixed to the surface of the compressor.

FIG. 9 is a sectional view of a compressor having a compressor temperature detecting sensor in a conventional air conditioner. As shown in the figure, 1 is a compressor, 2 is a terminal, 3 is a terminal protection cover, 4 is a compressor temperature detection sensor, 5 is a compressor temperature detection sensor holder, 6 is a sensor lead wire completed, 7 is compression. The machine lead wire is completed.

[0004]

However, the air conditioner configured as described above has the following problems. That is, in order to make the compressor temperature detection sensor adhere to the compressor, a rubber-made holder was required. That is,
A special clad expensive rubber that can withstand long-term use at high temperatures was required. Further, when the compressor temperature becomes high (for example, around 150 ° C.) due to an abnormality or the like, the rubber may deteriorate and lose its initial elasticity.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has a structure in which a ring-shaped metal sensor holding plate is used to hold a compressor temperature detection sensor. An object of the present invention is to perform reliable holding and improve the accuracy of compressor protection control.

Another object of the present invention is to prevent the outer periphery of the ring-shaped metal sensor holding plate from being bent to the detection surface side of the sensor to prevent the outer periphery from becoming an edge and damaging the lead wire.

Another object of the present invention is to provide a ring-shaped metal sensor holding plate having a plurality of circular holes so as to provide elasticity and secure holding.

Further, the present invention provides a ring-shaped metal sensor holding plate provided with n circular holes at equal intervals, and n / 2 slits having a width smaller than the diameter of the holes so as to connect the two holes. The object of the present invention is to improve elasticity, reduce stress on the terminal protection cover, and prevent deformation (floating) of the terminal protection cover.

Further, according to the present invention, a notch having a size that allows a sensor terminal to pass through the inside of a ring-shaped metal sensor holding plate and does not come out after inserting a sensor lead terminal is provided.
The purpose is to simplify the sensor manufacturing process by providing two locations.

A further object of the present invention is to reduce the number of parts by forming a ring-shaped metal sensor holding plate integrally with the detection surface protection metal plate.

[0011]

SUMMARY OF THE INVENTION In order to solve the above problems, an air conditioner according to the present invention comprises a compressor, a terminal connected to a lead wire for driving a motor of the compressor, and a terminal formed of dust or water. Compressor temperature detection that detects compressor temperature in an air conditioner equipped with a microcomputer equipped with a terminal protection cover to protect the compressor from running out of refrigerant gas from the refrigeration cycle or from overload operation A sensor is provided, the sensor body of this compressor temperature detection sensor is formed in a cylindrical shape, and a detection surface protection metal plate that protects the detection surface is caulked around the cylinder on the detection surface side, and the terminal that outputs the sensor is detected 2 on the other side of the surface
In the compressor temperature detection sensor having a configuration in which a plurality of metal sensors are arranged, a ring-shaped metal sensor holding plate is provided for holding the metal sensor in close contact with the compressor, and the inner diameter of the metal sensor holding plate is the detection surface protection metal plate. The outer diameter of the metal sensor holding plate is made smaller than the maximum outer shape of the caulking and the maximum outer shape of the terminal, and larger than the outer shape of the sensor body. It is provided with a means for holding the machine temperature detection sensor in close contact with the compressor.

[0012]

The operation of the above means is as follows.

That is, in an air conditioner equipped with a microcomputer, comprising a compressor, a terminal connected to a lead wire for driving a motor of the compressor, and a terminal protection cover for protecting the terminal from dust and water.
A compressor temperature detection sensor is provided to detect the compressor temperature to protect the compressor from running out of refrigerant gas from the refrigeration cycle or from overload operation.The sensor body of this compressor temperature detection sensor is formed in a cylindrical shape. On the detection surface side, a detection surface protection metal plate that protects the detection surface is caulked around the cylinder,
In a compressor temperature detection sensor having a configuration in which two terminals for outputting the sensor are arranged on the opposite side of the detection side,
A ring-shaped metal sensor holding plate is provided for holding the compressor in close contact with the compressor, and the inner diameter of the metal sensor holding plate is smaller than the maximum outer shape of the caulking of the detection surface protection metal plate and the maximum outer shape of the terminal. And, the outer diameter of the sensor holding plate is made larger than the outer shape of the sensor main body, and the outer periphery of the sensor holding plate is held in close contact with a part of a terminal protection cover of the compressor so as to hold the compressor temperature detection sensor in close contact with the compressor. With this configuration, the surface temperature of the compressor can be accurately detected.

Further, by providing a compressor temperature detection sensor holding means in which the outer periphery of the ring-shaped metal sensor holding plate is bent toward the detection surface side of the sensor, the compressor mounting process and the vibration during the operation of the compressor are provided. In addition, it is possible to prevent the lead wire from being damaged on the outer periphery of the ring-shaped metal sensor holding plate, to increase the strength of the metal sensor holding plate, and to reduce the plate thickness.

Further, by providing the ring-shaped metal sensor holding plate with a compressor temperature detection sensor holding means having a plurality of circular holes, elasticity can be provided and reliable holding can be performed.

Further, the ring-shaped metal sensor holding plate is provided with n circular holes at equal intervals, and n / 2 slits are provided with a width smaller than the diameter of the holes so as to connect the two holes. By providing the machine temperature detection sensor holding means, it is possible to improve elasticity, reduce stress on the terminal protection cover, and prevent deformation (floating) of the terminal protection cover.

Further, the compressor temperature detection sensor holding means is provided with two notches of a size that allow the sensor terminals to pass through the inside of the ring-shaped metal sensor holding plate and do not come out after inserting the sensor lead terminal. By providing the sensor, the sensor and the metal sensor holding plate are separately manufactured and then integrated, thereby simplifying the handling of the sensor manufacturing process.

Further, by providing a compressor temperature detection sensor holding means in which a ring-shaped metal sensor holding plate is formed integrally with the detection surface protection metal plate, the number of parts can be reduced and the fulcrum for holding is provided. The distance has increased,
Has greater elasticity.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to the drawings.

FIG. 8 shows a refrigeration cycle of an air conditioner according to one embodiment of the present invention. As shown in the figure, 1 is a compressor, 2 is an outdoor heat exchanger, 3 is an outdoor fan, 4 is a decompressor, 5 is an indoor heat exchanger, 6 is an indoor fan, and 7 is a compressor temperature. It is a compressor temperature detecting means (for example, a compressor temperature detecting sensor) for detecting.

In this refrigeration cycle, during operation, the refrigerant discharged from the compressor 1 flows through the outdoor heat exchanger 2, the pressure reducer 4, and the outdoor heat exchanger 5, and is sucked into the compressor 1.

Next, the configuration of the present invention will be described with reference to FIGS. FIG. 1 is a mounting diagram of a compressor temperature detection sensor according to a first embodiment of the present invention. In FIG. 1, 11 is a compressor, 12 is a terminal connected to a lead wire for driving a motor of the compressor, 13 is a terminal protection cover for protecting the terminal from dust, water, etc., 14
In an air conditioner equipped with a microcomputer, a compressor temperature detecting means (for example, a compressor temperature detecting sensor for detecting a compressor temperature in order to protect the compressor from an operation when the refrigerant gas escapes from the refrigeration cycle or when the compressor is overloaded) ), 1
Reference numerals 5 and 16 denote terminal protection cover fixing bolts and nuts for attaching the terminal protection cover 13 to the compressor. 17 is the completion of the sensor lead wire connected to the compressor temperature detection sensor. FIG. 2 is a detailed configuration diagram of the compressor temperature detection sensor holding means in the first embodiment of the present invention. Here, a detailed configuration of the compressor temperature detecting means 14 will be described. The sensor body 141 is formed in a cylindrical shape, and on the detection surface side, a detection surface protection metal plate 142 for protecting the detection surface is caulked around the cylinder, and two terminals 143 for outputting the sensor are arranged on the opposite side of the detection surface. In order to hold the compressor temperature detecting means 14 in close contact with the compressor 11, a ring-shaped metal sensor holding plate 18 is provided, and the inner diameter (for example, φ15) of the metal sensor holding plate 18 is provided. ) Is the maximum outer shape of the caulking of the detection surface protection metal plate (for example, φ
17) and the maximum outer shape of the terminal 143 (for example, φ1
6.5) smaller than the outer diameter of the sensor body 141, and the metal sensor holding plate 1
8, the compressor temperature detection sensor 14 is compressed so that the outer circumference (for example, φ29) closely contacts a part of the terminal protection cover 13 of the compressor 11. It is configured to be held in close contact with the machine 11.

Next, a second embodiment of the present invention will be described. FIG. 3 is a detailed configuration diagram of the compressor temperature detection sensor holding means according to the second embodiment of the present invention. In FIG. 3, reference numeral 21 denotes a ring-shaped sensor holding plate, which is a compressor temperature sensor holding means characterized in that the outer periphery is bent toward the detection surface side of the sensor (for example, 1.5 mm at R0.3). The outer periphery of the ring-shaped metal sensor holding plate 21 is bent toward the detection surface side of the sensor, so that the compressor 1
In the mounting process to 1 and vibration during compressor operation,
The strength is improved while preventing the lead wire from being damaged on the outer periphery of the ring-shaped metal sensor holding plate 21,
The plate thickness can be reduced (for example, t = 0.15).

Next, a third embodiment of the present invention will be described. FIG. 4 is a detailed configuration diagram of the compressor temperature detection sensor holding means according to the third embodiment of the present invention. In FIG. 4, 31
Is a ring-shaped metal sensor holding plate provided with a plurality (for example, eight) of circular holes 32 (for example, φ3 holes);
A hole 32 is formed in a part of the terminal protection cover 13 of the compressor 11.
The temperature of the compressor temperature detection sensor 1 is reduced by reducing the rigidity of the metal sensor holding plate 31 to make it elastic.
4 is a means for holding a compressor temperature detecting sensor.

Next, a fourth embodiment of the present invention will be described. FIG. 5 is a detailed configuration diagram of a compressor temperature detection sensor holding unit according to a fourth embodiment of the present invention. In FIG. 5, 41
Denotes a ring-shaped metal sensor holding plate, which is provided with n (for example, 8) circular holes (for example, φ3 holes) at equal intervals and n / 2 (for example, 4) slits. The diameter of the hole (for example, φ
3) A notch having the following width (for example, 1 mm) is provided, and the compressor temperature detection sensor 14 is provided with a part of the terminal protection cover 13 of the compressor 11 so as to have elasticity while securing the strength of the outer periphery. By holding so as to hold down, the elasticity can be improved, the stress on the terminal protection cover 13 can be reduced, and the deformation (floating) of the terminal protection cover 13 made of resin is prevented.

Next, a fifth embodiment of the present invention will be described. FIG. 6 is a detailed configuration diagram of a compressor temperature detection sensor holding unit according to a fifth embodiment of the present invention. In FIG. 6, 51
Is a ring-shaped metal sensor holding plate, through which a terminal 143 of the compressor temperature detection sensor 14 can pass, and a notch 53 (for example, having a width of 7 mm; By providing two locations (pitch: 15.7 mm), the compressor temperature detection sensor 14 and the metal sensor holding plate 51 are manufactured in a separate process and then combined to simplify handling of the sensor manufacturing process. Compressor temperature sensor holding means.

Next, a sixth embodiment of the present invention will be described. FIG. 7 is a detailed configuration diagram of the compressor temperature detection sensor holding means in the sixth embodiment of the present invention. In FIG. 7, 61
Is a ring-shaped metal sensor holding plate, which is formed integrally with the detection surface protection metal plate 142 to reduce the number of components, increase the holding fulcrum distance, and have a larger elastic force. This is a device temperature sensor holding means.

[0028]

As is clear from the above embodiments, the present invention provides
By using a ring-shaped metal sensor holding plate, which is hardly affected by temperature deterioration, in the compressor temperature sensor holding device of the air conditioner, the compressor temperature detection error due to temperature changes (retention force decrease due to rubber deterioration) Floating of the heat-sensitive surface due to heat) is minimized, and the compressor temperature detection sensor can be firmly held even at high temperatures and accurate compressor temperature detection can be performed, so that the compressor can be protected accurately. To play.

Further, the present invention comprises a compressor temperature detection sensor holding means in which the outer periphery of a ring-shaped metal sensor holding plate is bent toward the detection surface side of the sensor, so that the compressor mounting process and the operation of the compressor can be performed. It is possible to prevent the lead wire from being damaged on the outer periphery of the ring-shaped metal sensor holding plate in the vibration of the device, and to improve the strength of the metal sensor holding plate and reduce the thickness. .

Further, the present invention provides a compressor temperature detection sensor holding means in which a plurality of circular holes are provided in a ring-shaped metal sensor holding plate, thereby providing elasticity.
An effect such as reliable holding is provided.

Further, according to the present invention, a ring-shaped metal sensor holding plate is provided with n circular holes at equal intervals, and n / 2 slits are connected to the two holes so that the width is smaller than the diameter of the holes. By providing a notched compressor temperature detection sensor holding means, it is possible to improve elasticity and reduce stress on the terminal protection cover, and prevent deformation (floating) of the resin terminal protection cover It has the effect of doing.

Further, a compressor temperature detection sensor holding means provided with two notches having a size that allows the sensor terminal to pass through the inside of the ring-shaped metal sensor holding plate and does not come out after inserting the sensor lead terminal. By providing the sensor, the sensor and the metal sensor holding plate are separately manufactured, and then integrated, whereby effects such as simplification of handling of the sensor manufacturing process can be obtained.

Further, by providing a compressor temperature detection sensor holding means in which a ring-shaped metal sensor holding plate is formed integrally with the detection surface protection metal plate, the number of parts can be reduced and the fulcrum for holding is provided. The distance has increased,
It has the effect of having a greater elastic force.

[Brief description of the drawings]

FIG. 1A is a plan view of a first embodiment of the present invention, in which a compressor temperature detection sensor is mounted. FIG.

FIG. 2A is a plan view of a compressor temperature detecting sensor holding means according to the first embodiment of the present invention. FIG. 2B is a front view of the holding means. FIG.

3A is a plan view of a compressor temperature detecting sensor holding means according to a second embodiment of the present invention, FIG. 3B is a front view of the same, and FIG.

FIG. 4A is a plan view of a compressor temperature detection sensor holding unit according to a third embodiment of the present invention. FIG.

FIG. 5A is a plan view of a compressor temperature detection sensor holding unit according to a fourth embodiment of the present invention, and FIG.

6 (a) is a plan view of a compressor temperature detection sensor holding means according to a fifth embodiment of the present invention. FIG. 6 (b) is a front view thereof. Partly cutaway front view

FIG. 7 (a) is a plan view of a compressor temperature detecting sensor holding means according to a sixth embodiment of the present invention. FIG. 7 (b) is a front view thereof.

FIG. 8 is a refrigeration cycle diagram of the air conditioner of the present invention.

FIG. 9A is a plan view of a conventional compressor temperature detection sensor mounting part, and FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 11 Compressor 12 Terminal 13 Terminal protection cover 14 Compressor temperature detection means 18, 21, 31, 41, 51, 61 Metal sensor holding plate 32 Hole 141 Sensor main body 142 Detection surface protection metal plate 143 Terminal

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Koji Toyomoto 1006 Kazuma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (6)

[Claims] An air conditioner equipped with a microcomputer, comprising a compressor, a terminal connected to a lead wire for driving a motor of the compressor, and a terminal protection cover for protecting the terminal from dust and water. A compressor temperature detection sensor that detects the compressor temperature to protect the compressor from running out of refrigerant gas from the cycle or from overload operation is provided, and the sensor body of this compressor temperature detection sensor is formed in a cylindrical shape, In the compressor temperature detection sensor having a configuration in which a detection surface protection metal plate for protecting the detection surface is caulked around the cylinder on the detection surface side, and two terminals for outputting the sensor are arranged on the opposite side of the detection surface, A ring-shaped metal sensor holding plate is provided to hold the compressor in close contact with the compressor, and the inner diameter of the metal sensor holding plate is the same as that of the detection surface protection metal plate. The maximum outer shape of the caulking and the maximum outer shape of the terminal, and larger than the outer shape of the sensor body, furthermore, the outer periphery of the metal sensor holding plate is in close contact with a part of the terminal protection cover of the compressor. A compressor temperature sensor holding device for an air conditioner, which holds the compressor temperature sensor in close contact with the compressor. 2. The compressor temperature detection sensor holding device for an air conditioner according to claim 1, wherein the outer periphery of the ring-shaped metal sensor holding plate is bent toward the detection surface of the sensor. 3. A ring-shaped metal sensor holding plate is provided with a plurality of circular holes, and a part of a terminal protection cover of the compressor has elasticity to hold the sensor. The holding device for a compressor temperature detection sensor of an air conditioner according to claim 2. 4. A ring-shaped metal sensor holding plate is provided with n circular holes at equal intervals, and n / 2 slits are provided with a width equal to or less than the diameter of the holes so as to connect the two holes. 3. The compressor temperature detection sensor holding device for an air conditioner according to claim 2, wherein the sensor is held so that a part of the terminal protection cover of the machine has elasticity. 5. A notch having a size that allows a sensor terminal to pass through the inside of a ring-shaped metal sensor holding plate and does not come off after inserting a sensor lead terminal. A holding device for a compressor temperature detection sensor of the air conditioner according to the above. 6. The compressor temperature detection sensor holding device for an air conditioner according to claim 4, wherein a ring-shaped metal sensor holding plate is formed integrally with said detection surface protection metal plate.