JPH08128764A - Oil temperature sensor mounting structure for compressor - Google Patents

Abstract

PURPOSE: To mount an oil temperature sensor for detecting the oil temperature in a compressor at the compressor by a simple operation without increasing the cost and the processing man-hour of the compressor. CONSTITUTION: A first compressor 1a which is inverter-controlled and a second compressor controlled to be ON or OFF are connected in parallel with a refrigerant circuit, and the compressors are connected by an oil equalizer. An oil temperature sensor Tho is mounted at an oil equalizer washer 35a of the connecting part of the equalizer of the compressor 1a by a clamp 36. The wet operating state of the compressor 1a is decided according to lubricant temperature detected by the sensor Tho.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a structure for mounting an oil temperature sensor for detecting the temperature of lubricating oil stored in a compressor provided in a refrigerating device or the like.

[0002]

2. Description of the Related Art Conventionally, for example, JP-A-4-20376.
As disclosed in Japanese Unexamined Patent Publication No. 2 (1994), the refrigerant circuit included in the air conditioner includes a compressor. This compressor draws in the gas refrigerant evaporated in the evaporator, compresses it to a high temperature and high pressure, and then discharges it toward the condenser.

In addition, during such operation of the compressor, in an operating state in which the refrigerant is not sufficiently evaporated (for example, during defrost operation or low outside air heating operation), the liquid phase is partially present in the refrigerant. A so-called wet operation state in which the remaining portion is sucked into the compressor is likely to occur, and at this time, there is a risk that the liquid refrigerant dilutes the lubricating oil stored in the compressor, which may hinder the operation of the compressor. is there.

Therefore, in a situation where such a wet operation state is likely to occur, the compressor is operated at a low rotation speed to prevent the liquid refrigerant from being sucked into the compressor.

The temperature of the lubricating oil stored in the compressor is detected as one means for determining whether the operating condition of the compressor is a wet operating condition. That is, when the oil temperature is equal to or lower than the predetermined value, it is determined that the operation is wet, and the compressor is operated at low speed.

Further, as an example of the mounting structure of the oil temperature sensor (thermistor) for detecting the oil temperature to the compressor, as shown in FIGS. 7 and 8, a metal belt-shaped locking band (a) is used. Thus, the oil temperature sensor (c) is integrally wound around the outer surface of the compressor casing (b).

As another mounting structure, the oil temperature sensor (c) is housed in the bottom of the compressor to directly detect the temperature of the lubricating oil.

[0008]

However, the above-mentioned mounting structure has the following problems. In the former configuration, as a work for mounting the oil temperature sensor (c), the retaining band (a) is maintained while the oil temperature sensor (c) is kept in contact with the outer surface of the compressor casing (b). ) Had to be wrapped around the outer surface of the compressor casing (b) having a relatively large diameter, and the work was complicated.

On the other hand, in the latter configuration, a configuration for taking out the signal line of the oil temperature sensor (c) from the inside of the compressor is required, so that the number of processing steps of the compressor and the cost are increased.

The present invention has been made in view of these points, and an oil temperature sensor for detecting the oil temperature inside the compressor causes an increase in the number of processing steps of the compressor and an increase in cost. It is intended to be attached to the compressor without any and with a simple operation.

[0011]

In order to achieve the above object, the present invention utilizes a seat protruding from the compressor casing, and an oil temperature sensor is attached to this seat. Specifically, the invention according to claim 1 is a seat (35a) formed of a pipe for taking out lubricating oil to the outer surface around the bottom of the casing (35) of the compressor (1a) in which lubricating oil is stored, (35c)
And project the casing (3a) around the outer periphery of the seats (35a), (35c).
5) Oil temperature sensor (Tho) to detect the temperature of the lubricating oil inside
Is mounted so that heat can be transferred from the lubricating oil by the mounting bracket (36).

According to a second aspect of the invention, in the structure for mounting the oil temperature sensor of the compressor according to the first aspect, the compressor (1a) is provided.
Is connected to the adjacent compressor (1b) by an oil equalizing pipe (1f),
By circulating the lubricating oil in the oil equalizing pipe (1f), the amounts of lubricating oil inside the compressors (1a), (1b) are made substantially equal. Then, the casing (35) of the compressor (1a) is provided with an oil equalizing pipe seat (35a) for connecting the oil equalizing pipe (1f), and the oil temperature sensor
(Tho) is attached to the oil level pipe seat (35a) of the compressor (1a).

According to a third aspect of the invention, in the structure for mounting the oil temperature sensor of the compressor according to the first aspect, the compressor (1a)
In the casing (35) of the above, an oil drain seat (35c) that is opened when the lubricating oil in the casing (35) is discharged is made to project, and an oil temperature sensor (Tho) is attached to this oil drain seat (35c). It is configured to be attached to.

The invention according to claim 4 is the above-mentioned claim 1, 2
Alternatively, in the compressor oil temperature sensor mounting structure described in 3, the mounting bracket (36) is locked to the sensor holding portion (36b) that holds the oil temperature sensor (Tho) and the seats (35a) and (35c). And a locking portion (36a) for locking. Then, the sensor holder (3
6b) holds the oil temperature sensor (Tho) and locks (36a)
Is locked to the seats (35a) and (35c), the oil temperature sensor (T
The ho) is brought into contact with the outer surface of the seats (35a), (35c).

[0015]

With the above construction, the present invention provides the following actions. In the invention according to claim 1, the compressor
During the operation of (1a), when determining whether the operating condition is wet, oil attached to the seats (35a), (35c) protruding from the compressor casing (35) is used. Temperature sensor (Tho)
The internal temperature of the lubricating oil is detected, and the determination is made based on this. Also, attach the oil temperature sensor (Tho) to the mounting bracket (36).
Since it is attached to the seats (35a) and (35c) by the oil temperature sensor (Th
o) can be attached, and its workability is easy.

In the invention according to claim 2, each compressor (1a),
During the operation of (1b), the lubricating oil flows through the oil equalizing pipe (1f) connecting the both, so that the amount of lubricating oil inside the compressors (1a), (1b) is made substantially equal. Then, the oil temperature sensor (T
ho) is an oil equalizing pipe seat (35) for connecting this oil equalizing pipe (1f).
It is attached to a) and detects the temperature of the lubricating oil flowing inside.

According to the third aspect of the invention, the oil temperature sensor (Th
o) is attached to the oil drain seat (35c) and detects the temperature of the lubricating oil inside it.

According to the invention of claim 4, the oil temperature sensor (Th
When attaching (o) to the seats (35a), (35c), first hold the oil temperature sensor (Tho) in the sensor holding part (36b) of the mounting bracket (36), and then lock it in this state. Seat (35a), (3a)
5c). As a result, the oil temperature sensor (Tho) is attached to the seats (35a), (35c) via the mounting bracket (36), and in this state, the oil temperature sensor (Tho) is attached to the seat (35a). , (35c) is in contact with the outer peripheral surface, so that the oil temperature sensor (Tho) detects the temperature of the lubricating oil via the walls of the seats (35a), (35c).

[0019]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 3 shows the refrigerant piping system of the outdoor unit (A) of the multi-type air conditioner according to the present embodiment. Although not shown, this outdoor unit (A) has a plurality of indoor units (B),
(B), ... Are connected in parallel with each other. The indoor units (B) have basically the same configuration, and FIG. 4 shows a refrigerant piping system of one indoor unit (B).

Inside the outdoor unit (A), the capacity is adjusted by an inverter (2a) whose output frequency can be variably switched every 4 to 10 Hz within a range of 30 to 116 Hz.
A variable capacity compressor (1) configured by connecting a compressor (1a) and a second compressor (1b) whose operation is switched to stop depending on the pilot pressure to each other in parallel via a check valve (1e). ) And the above first,
Oil separators (4a) and (4b) for separating the oil in the gas discharged from the second compressors (1a) and (1b) respectively, and switching during cooling operation as shown by the solid line in the figure, and during heating operation in the figure A four-way switching valve (5) that switches as shown by the broken line, an outdoor heat exchanger (6) that serves as a condenser during cooling operation, and an evaporator during heating operation, and the outdoor heat exchanger.
Two outdoor fans (6a) and (6b) attached to (6), an outdoor electric expansion valve (8) that regulates the refrigerant flow rate during cooling operation and throttles the refrigerant during heating operation, and liquefied A receiver (9) for storing the refrigerant and an accumulator (10) are built in as main devices, and each of the devices (1) to (10) is connected by a refrigerant pipe (11) so that the refrigerant can flow. ing.

Further, the indoor unit (B) is provided with an indoor heat exchanger (12) and a fan (12a) thereof which serve as an evaporator during cooling operation and a condenser during heating operation, and the indoor heat exchanger (12) ) On the liquid pipe side, an indoor electric expansion valve that regulates the refrigerant flow rate during heating operation and throttles the refrigerant during cooling operation.
(13) is installed. And each indoor unit (B),
(B), ... Refrigerant pipes are joined, and then manually closed valves (17a), (1
Outdoor unit by connecting pipes (11a), (11b) via 7b)
It is connected to (A). That is, each of the above devices is connected by a refrigerant pipe (11) so that the refrigerant can flow, and the main refrigerant circuit (14) is configured to release the heat obtained by heat exchange with the outdoor air to the indoor air. Is configured.

Further, (40) is a liquid injection bypass passage for injecting a liquid refrigerant into the suction line during heating / cooling operation to adjust the superheat of the suction gas, and the liquid injection bypass passage (40) is Each compressor
It branches into branch pipes (40a) and (40b) connected to the suction part of (1a) and (1b). And, in each of the branch pipes (40a), (40b),
Capillary tubes (41a) and (41b) and injection solenoid valves (42a) and (42b) that are opened when the discharge pipe temperature rises excessively.
And are installed respectively.

Further, (31) cools the suction refrigerant by heat exchange between the suction refrigerant in the suction pipe (11) and the liquid refrigerant in the liquid pipe (11), and the refrigerant overheats in the communication pipe (11b). It is a suction pipe heat exchanger for compensating the increase in temperature.

Further, many sensors are arranged in this apparatus, (Th1) is a room temperature thermostat for detecting the temperature of each room, and (Th2) and (Th3) are liquids of the indoor heat exchanger (12). Indoor liquid temperature sensor and indoor gas temperature sensor that detect the temperature of the refrigerant in the gas side and gas side piping, and (Th4a) and (Th4b) are discharge pipe sensors that detect the discharge pipe temperature of each compressor (1a) and (1b). , (Th5) is a defrost sensor that detects the frosting state from the outlet temperature of the outdoor heat exchanger (6) during heating operation, and (Th6) is the suction pipe (11) on the downstream side of the suction pipe heat exchanger (31). Placed,
Intake pipe sensor for detecting the intake pipe temperature, (Th7) is located at the air intake port of the outdoor heat exchanger (6), the outside air temperature sensor for detecting the intake air temperature, (Tho) is the first compressor (1a) Attached to the oil temperature sensor for detecting the temperature of the lubricating oil stored therein, (P1) is arranged in the discharge pipe, and the main refrigerant circuit (14)
Is a high pressure sensor for detecting the high pressure side pressure, and (P2) is a low pressure sensor disposed in the suction line for detecting the low pressure side pressure.

The outdoor unit (A) is provided with various auxiliary equipment in addition to the above main equipment. (twenty one)
Is installed in a pressure equalizing hot gas bypass line (11d) that connects the discharge pipe (1h) on the first compressor (1a) side and the compressor suction side. Solenoid valve for pressure equalization that operates for a certain period of time before restarting when stopped, (33a), (33b)
Is an oil return pipe for returning the lubricating oil from the oil separators (4a), (4b) to the first and second compressors (1a), (1b) via the capillary tubes (32a), (32b), respectively. Is.

Further, a pressure equalizing passage (30) is provided between the receiver (9) and the pressure equalizing hot gas bypass passage (11d). One end of this pressure equalizing path (30) is connected to the upper end surface of the receiver (9), and the other end is on the upstream side of the pressure equalizing solenoid valve (21) of the pressure equalizing hot gas bypass path (11d). Connected, equalizing hot gas bypass (11d) from receiver (9)
Check valve (3 to allow only refrigerant flow in the direction
0a) is installed. With such a configuration, the gas refrigerant in the receiver (9) can be introduced into the pressure equalizing hot gas bypass passage (11d) and eventually to the suction side of the compressor (1) when the pressure equalizing solenoid valve (21) is opened. Therefore, the pressure of the entire circuit is equalized.

Further, (22) is connected to an oil recovery passageway (11e) connecting the upstream side of the capillary tube (32a) of the oil return pipe (33a) on the first compressor (1a) side and the compressor suction side. It is an intervening solenoid valve. As a result, the lubricating oil recovered in the oil separator (4a) is returned from the oil return pipe (33a) to the compressor (1) via the oil recovery passageway (11e) during the pressure equalizing operation described above. It is supposed to be.

Further, in the figure, (HPS) is a high pressure switch for protecting the compressor, and (GP) is a gauge port.

The above solenoid valves and sensors are connected to the control unit (15) together with each main device by a signal line, and the control unit (15) receives signals from the sensors and each motorized valve and solenoid valve. The opening / closing control of the compressor and the capacity control of the compressor are performed.

Each compressor (1) is constructed by a so-called forced differential pressure system. In other words, connect the suction pipe (1d) of the second compressor (1b) whose drive and stop are switched to the middle of the suction pipe (1c) of the first compressor (1a) whose capacity is adjusted by the inverter (2a). In addition, the diameter of the suction pipe (1d) of the second compressor (1b) is set to be smaller than the diameter of the suction pipe (1c) of the first compressor (1a), and the second compressor (1b) ) Of the suction pipe (1d) of the first compressor (1a) is made larger than the pressure loss of the suction pipe (1c) of the first compressor (1a). The compressors (1b) are respectively configured on the low dome side. Further, the first compressor (1a) and the second compressor (1b) are connected by an oil equalizing pipe (1f) having a capillary (1g) interposed, so that the lubricating oil stored inside can be distributed. I have to. As a result, during operation of both compressors (1a), (1b), a pressure difference is generated inside each compressor (1a), (1b) due to the difference in pressure loss, and the first compressor (1
a) The internal lubricating oil will be supplied to the second compressor (1b) via the oil equalizing pipe (1f), whereby each compressor (1a), (1b)
The amount of oil is almost uniform.

Next, as a characteristic configuration of this example, the first
The mounting structure of the oil temperature sensor (Tho) for detecting the temperature of the lubricating oil stored in the compressor (1a) will be described. As shown in FIGS. 1 and 2, this first compressor (1a)
Is equipped with a compression mechanism and an electric motor (not shown) in a substantially cylindrical casing (35) so that the refrigerant sucked from the suction pipe (1c) is compressed by the compression mechanism and then discharged from the discharge pipe (1h). It has become. And this casing (35)
An oil equalizing pipe seat (35a) for connecting the oil equalizing pipe (1f) is horizontally provided at the lower end portion of the above. This oil pipe seat (3
5a) is a pipe having a short length, one end of which is opened to the internal space of the casing (35) and the other end of which is connected to the oil equalizing pipe (1f). Also, this oil pipe seat (35a)
At the tip of the pipe fitting (35) for connecting the oil leveling pipe (1f)
b) is installed.

Further, at the position near the disposition part of the oil equalizing pipe seat (35a) at the lower end of the casing (35),
The oil drain seat (35c) used when draining the lubricating oil is projected horizontally. The oil drain seat (35c) is made of a short pipe similar in length to the oil equalizing pipe seat (35a) .One end of the oil drain seat (35c) opens into the internal space of the casing (35) and the other end opens.
Blocked by (35d). Then, during maintenance of the compressor (1a) or replacement of lubricating oil, this drain plug (35
The d) is removed, and the lubricating oil is discharged from the oil drain seat (35c).

The oil temperature sensor (Tho) is attached to the outer peripheral portion of the oil equalizing pipe seat (35a) by a fitting (36). As shown in FIGS. 5 and 6, this mounting member is formed by bending a thin metal plate. In detail, each large-diameter locking part (36a) with a large radius of curvature and a small-diameter locking part (36b) as a sensor holding part with a small radius of curvature, which are formed in a substantially semi-circular shape, are integrally formed. The end portion of the large-diameter locking portion (36a) is slightly curved in the opposite direction to the large-diameter locking portion (36a). The diameter of each locking part (36a), (36b) is the same as the small diameter locking part (36a).
b) is the diameter of the oil temperature sensor (Tho), and the large-diameter locking part (36a)
Are formed to have a diameter substantially equal to or slightly smaller than the diameter of the oil equalizing pipe seat (35a).

Due to this structure, the oil temperature sensor
When attaching (Tho) to the oil equalizing pipe seat (35a), first fit the oil temperature sensor (Tho) to the small diameter locking part (36b), and in this state, set the large diameter locking part ( 36a) to the oil level pipe seat (35a). As a result, the oil temperature sensor (Tho) is attached to the oil equalizing pipe seat (35a) through the mounting metal fitting (36), and in this state, as shown by the phantom line in FIG. The outer peripheral surface of (Tho) and the outer peripheral surface of the oil equalizing pipe seat (35a) are in contact with each other. That is, the oil temperature sensor (Tho) is arranged so as to detect the temperature of the lubricating oil inside the oil equalizing pipe seat (35a) via the pipe wall of the oil equalizing pipe seat (35a).

Next, the operation of the air conditioner constructed as described above will be described. 3 and 4,
During cooling operation of the air conditioner, the four-way selector valve (5) switches to the solid line side in the figure, the refrigerant compressed by the compressor (1) is condensed by the outdoor heat exchanger (6), and the connecting pipe (11a ), And is branched and sent to each indoor unit (B), (B), .... Each indoor unit
In (B), (B), ..., decompressed by each indoor electric expansion valve (13), ..., evaporated by each indoor heat exchanger (12) ,. It returns in the state and circulates so as to be sucked into the compressor (1). In other words, the liquid refrigerant is the indoor heat exchanger (1
In 2), the indoor air is cooled by exchanging heat with the indoor air and evaporating.

Further, during the heating operation, the four-way switching valve (5) is switched to the broken line side in the figure, the flow of the refrigerant is opposite to that during the cooling operation, and the refrigerant compressed by the compressor (1) is discharged. After being condensed in each indoor heat exchanger (12), merged, flow in the liquid state to the outdoor unit (A), decompressed by the outdoor electric expansion valve (8), and evaporated in the outdoor heat exchanger (6) Circulate back to the compressor (1). That is, the gas refrigerant heats the indoor air by exchanging heat with the indoor air in the indoor heat exchanger (12) and condensing. Also, when the outdoor heat exchanger (6) frosts during this heating operation, it is switched to defrost operation, the four-way switching valve (5) is on the solid line side in the figure, and each electric expansion valve (8), (13). Is fully opened and defrosted by the high temperature refrigerant discharged from the compressor (1).

Further, in such a driving operation, when both compressors (1a), (1b) are driven, the second
The pressure loss of the suction pipe (1d) of the compressor (1b) is larger than the pressure loss of the suction pipe (1c) of the first compressor (1a), and due to the difference in this pressure loss, each compressor (1a) , (1b) causes a pressure difference inside, and the lubricating oil inside the first compressor (1a) is supplied to the second compressor (1b) through the oil equalizing pipe (1f), whereby each compressor (1a) ,
(1b) The amount of lubricating oil inside is made approximately equal.

Then, in each of these operating states,
As a characteristic operation of this example, a so-called wet operation state in which the liquid phase remains in a part of the refrigerant and is sucked into the compressor (1) occurs during defrost operation or low outside air heating operation. In the easy operating condition, the temperature of the lubricating oil in the compressor (1) is detected and the wetness is judged by this lubricating oil temperature. Specifically, the oil temperature sensor (Tho) attached to the oil leveling pipe seat (35a) of the first compressor (1a) is used to
The temperature of the lubricating oil inside it is detected through the pipe wall in 5a) .If the detected temperature is lower than the predetermined wetness judgment temperature, it is determined that the compressor is in the wet operation state and the compressor (1 The operating frequency of) is reduced to prevent the introduction of liquid refrigerant into the compressor (1). As a result, the liquid refrigerant is prevented from diluting the lubricating oil and the like, thereby preventing the operation of the compressor (1) from being hindered, and a stable continuous operation is performed.

As described above, according to the configuration of this example, the oil temperature sensor (Tho) for detecting the temperature of the lubricating oil is attached to the oil equalizing pipe seat (35c) by the attachment fitting (36). During the mounting operation, the mounting bracket (3
This can be done by fitting the locking part (36a) and (36b) in 6), and since it is attached to a part with a relatively small diameter,
As in the prior art, the oil temperature sensor is integrally wound around the outer surface of the compressor casing by the locking band (see FIGS. 7 and 8).
It is possible to simplify the installation work compared to (See). Further, unlike the case where the oil temperature sensor is housed in the bottom of the compressor, there is no need for a configuration for taking out the signal line of the oil temperature sensor, so that it is possible to reduce the processing man-hour and cost of the compressor. .

In this example, the oil temperature sensor (Tho) is attached to the oil equalizing pipe seat (35a), but the present invention is not limited to this, and the oil temperature sensor (Tho) is attached to the oil drain seat (35c). Good.
At this time, if the outer diameter dimensions of the oil equalizing pipe seat (35a) and the oil drain seat (35c) are approximately the same, attach the mounting bracket (36) of the above-mentioned shape to the
It can be used as it is for mounting on the oil drain seat (35c).

[0042]

As described above, according to the present invention, the following effects are exhibited. According to the invention of claim 1, since the oil temperature sensor is attached to the outer peripheral portion of the seat projecting on the outer surface around the bottom portion of the compressor casing by the attachment fitting, the comparison is made during the attaching operation of the oil temperature sensor. Since the oil temperature sensor can be attached to the part where the target diameter size is small, compared to the conventional method in which the oil temperature sensor is integrally wound around the outer surface of the compressor casing by the locking band, the installation work is easier. It is possible to simplify.
Further, unlike the case where the oil temperature sensor is housed in the bottom of the compressor, there is no need for a configuration for taking out the signal line of the oil temperature sensor, so that it is possible to reduce the processing man-hour and cost of the compressor. . Therefore, it is possible to improve the practicality of the structure for mounting the oil temperature sensor on the compressor.

According to the second and third aspects of the present invention, the mounting position of the oil temperature sensor on the compressor can be specifically obtained, and the practicality can be further improved.

According to the fourth aspect of the present invention, since the mounting metal piece is provided with the sensor holding portion for holding the oil temperature sensor and the locking portion for locking with the seat, the mounting metal member is attached to the sensor holding portion. After fitting the oil temperature sensor, the oil temperature sensor can be attached to the compressor by a simple operation such as locking the locking portion to the seat.

[Brief description of drawings]

FIG. 1 is a plan view of a compressor according to an embodiment.

FIG. 2 is a front view of a compressor.

FIG. 3 is a diagram showing a refrigerant piping system of an outdoor unit.

FIG. 4 is a diagram showing a refrigerant piping system of an indoor unit.

FIG. 5 is a side view showing a locking fitting.

FIG. 6 is a front view showing a locking fitting.

FIG. 7 is a perspective view of a compressor showing a conventional oil temperature sensor mounting structure.

FIG. 8 is a plan view of a compressor showing a conventional oil temperature sensor mounting structure.

[Explanation of symbols]

 (1a) 1st compressor (1b) 2nd compressor (1f) Oil level pipe (35) Casing (35a) Oil level seat (35c) Oil drain seat (36) Mounting bracket (36a) Large diameter locking part (36b) ) Small diameter locking part (sensor holding part) (Tho) Oil temperature sensor

Claims (4)

[Claims] 1. Seats (35a), (35c) made up of pipes for taking out lubricating oil project from the outer surface around the bottom of the casing (35) of the compressor (1a) in which lubricating oil is stored. An oil temperature sensor (Tho) for detecting the temperature of the lubricating oil in the casing (35) is installed on the outer periphery of the seats (35a), (35c) by means of the mounting metal fitting (36). An oil temperature sensor mounting structure for a compressor, which is mounted so that heat can be transferred from the compressor. 2. The compressor (1a) is connected to an adjacent compressor (1b) by an oil equalizing pipe (1f), and the lubricating oil flows through the oil equalizing pipe (1f), whereby each compressor (1a), (1b) The amount of lubricating oil inside is made approximately equal, and the casing (35) of the compressor (1a) has an oil equalizing pipe for connecting the oil equalizing pipe (1f). The compressor oil according to claim 1, characterized in that the seat (35a) is provided so as to project, and the oil temperature sensor (Tho) is attached to the oil level pipe seat (35a) of the compressor (1a). Temperature sensor mounting structure. 3. A casing (35) of the compressor (1a) is provided with an oil drain seat (35c) which is opened when the lubricating oil in the casing (35) is discharged, so that the oil temperature The oil temperature sensor mounting structure for a compressor according to claim 1, wherein the sensor (Tho) is mounted on the oil drain seat (35c). 4. The mounting bracket (36) includes a sensor holding portion (36b) for holding an oil temperature sensor (Tho) and a locking portion (36a) locked to the seats (35a), (35c). It is equipped with the above sensor holder
The oil temperature sensor (Tho) is held on (36b) and the locking part (36
When (a) is locked to the seats (35a), (35c), the oil temperature sensor (Tho) is brought into contact with the outer surface of the seats (35a), (35c). The oil temperature sensor mounting structure for a compressor according to claim 1, 2, or 3.