CN100416100C - Hermetic compressor and refrigeration unit - Google Patents
Hermetic compressor and refrigeration unit Download PDFInfo
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- CN100416100C CN100416100C CNB200510069247XA CN200510069247A CN100416100C CN 100416100 C CN100416100 C CN 100416100C CN B200510069247X A CNB200510069247X A CN B200510069247XA CN 200510069247 A CN200510069247 A CN 200510069247A CN 100416100 C CN100416100 C CN 100416100C
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- temperature detector
- seal container
- lubricant oil
- temperature
- type compressor
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Abstract
A hermetic compressor comprises a hermetic container, an electric motor and a compressing mechanism installed inside of the hermetic container, lubricating oil and refrigerant gas enclosed within the hermetic container, a first temperature detector disposed to a predetermined location within the hermetic container, and a second temperature detector disposed to a location adjacent to a surface of the lubricating oil in the hermetic container. The predetermined location where the first temperature detector is disposed is one of a location near an upper end and another location near a lower end within a space inside the hermetic container, and an amount of the lubricating oil in the hermetic container is determined according to temperatures detected by the first temperature detector and the second temperature detector.
Description
Technical field
The present invention relates to carry out the hermetic type compressor of refrigeration agent compression and the refrigerating plant of equipping it.
Background technique
In the past, as this compressor known have compressing mechanism and motor are enclosed in the welded seal container and the hermetic type compressor that forms.For example, in the flat 6-159274 communique of Japanese Patent Application Laid-Open, disclose to some extent.This hermetic type compressor is because refrigeration agent leaks and can not immerse moisture etc. former thereby have higher reliability, thereby is widely used in air-conditioning and the refrigerator.
In above-mentioned hermetic type compressor, be necessary the motor supply capability in seal container.Therefore, will have outstanding resistance to pressure and bubble-tight so-called hermetic terminal and seal container the welding, via the sealing terminal to the motor supply capability.
In addition, in above-mentioned hermetic type compressor, supply to compressing mechanism and bearing and wait and be lubricated being stored in lubricant oil in the seal container.In addition, the lubricant oil in the seal container spues from compressor with the gas refrigerant of compression.Usually, because lubricant oil circulates and turns back to once more in the compressor, it is hereby ensured the storage capacity of the lubricant oil of seal container in refrigerant circuit.
Yet, there is the storage capacity that changes lubricant oil because of operating condition, make the storage capacity deficiency of lubricant oil, thereby cause the low danger of lubrication effect.
For the problems referred to above, thereby proposed to utilize Temperature Detector to detect the scheme that is not enough to protect compressor that the interior pasta position of seal container detects the storage capacity of lubricant oil.That is, reduce, then stop compressor, carry out reclaiming the protection actions such as running of refrigerator oil, to avoid the compressor breakage from refrigerant circuit if detect pasta.In Japanese Patent Application Laid-Open 2001-12351 communique, it is disclosed to some extent.
Yet wherein, when when two measuring points do not have temperature difference, existence can not judge that detected temperatures is the temperature of lubricant oil or the problem of the temperature of refrigerant gas.That is, can not judge whether lubricant oil is sufficient.
At the problems referred to above, proposed on the position that can detect the refrigerant gas temperature usually, to be provided with the scheme of Temperature Detector.For example, in Japanese Patent Application Laid-Open 2001-32772 communique, it is disclosed to some extent.
As mentioned above, in aircondition, the scheme of the pasta of lubricant oil has been proposed to detect for the lubricant oil of controlling compressor.Detect in the method for pasta at this, detect pasta based on the temperature difference of the measuring point in the compressor seal container.
Yet, in order to detect the pasta position in the seal container, be necessary in seal container, to be provided with a plurality of Temperature Detectors etc., also need the signal of Temperature Detector etc. is fetched into outside the seal container.Relative with it, be in seal container, to be mounted with on the basis of a plurality of Temperature Detectors etc. in the past, a plurality of hermetic terminals are set in seal container more in addition wait connection detector etc., thereby take out its signal.Perhaps a plurality of Temperature Detectors etc. are connected with hermetic terminal etc.Therefore, exist complex structure also to cause the airtight bad problem of seal container because setting up terminal.
In addition, because oily temperature detection unit exposes and to be arranged in the seal container, so although exist actual pasta to be positioned at the below of oily temperature detection unit, because of the spittle of lubricant oil splashes the problem of judging the oil-break face on the oily temperature detection unit by accident.
Summary of the invention
Close type compressor of the present invention comprises seal container, is installed in motor and the compressing mechanism in this seal container, near second Temperature Detector of pasta of enclosing this seal container interior lubricant oil and refrigerant gas, being configured in first Temperature Detector on the assigned position in this seal container and being configured in the lubricant oil in this seal container.
Here, the assigned position that disposes first Temperature Detector is meant near the interior upper end of seal container or near any one party the lower end, judges the amount of the lubricant oil in the seal container according to the detected temperatures of first Temperature Detector and second Temperature Detector.
Therefore, can provide the simple in structure of a kind of compressor and can detect reliably the pasta in the seal container the position, can improve the hermetic type compressor of the reliability of the refrigerating plant that uses this compressor simultaneously.
Description of drawings
Fig. 1 is the refrigerant circuit explanatory drawing of the refrigerating plant of first embodiment of the invention;
Fig. 2 is the structural drawing of the hermetic type compressor of first embodiment of the invention;
Fig. 3 is the enlarged view of major component of the closed type press of first embodiment of the invention;
Fig. 4 is the structural drawing of the hermetic type compressor of second embodiment of the invention;
Fig. 5 is the enlarged view of major component of the hermetic type compressor of second embodiment of the invention.
Embodiment
Below, with reference to accompanying drawing embodiments of the invention are described.
(first embodiment)
Fig. 1 is the explanatory drawing of refrigerant circuit of the refrigerating plant of first embodiment of the invention.As shown in Figure 1, the refrigerating plant of present embodiment has refrigerant circuit 10, is formed in the aircondition that carries out air conditioning.Refrigerant circuit 10 is the reversible structures of refrigerant cycle direction, can switch between freeze cycle action and heat pump cycle action.
In refrigerant circuit 10, be provided with compressor 11.The exhaust end of compressor 11 is connected with the first port one 3a of four-way switching valve 13 via refrigerant piping 21.The second port one 3b of four-way switching valve 13 is connected with an end of outdoor heat converter 14 via refrigerant piping 22.The other end of outdoor heat exchanger 14 is provided with expansion valve 15 via refrigerant piping 23.
For four-way switching valve 13, it constitutes in the mode that can switch between the first port one 3a and the second port one 3b are communicated with and the 3rd port one 3c and the 4th port one 3d are communicated with the state (state of representing with solid line among Fig. 1) and the first port one 3a and the 4th port one 3d is communicated with and the second port one 3b and the 3rd port one 3c are communicated with state (state that dotted line is represented among Fig. 1).
As shown in Figure 2, compressor 11 is to have taken in compressing mechanism 31 and motor 32 and form in the seal container 30 of cylindrical vessel shape, constitutes so-called high pressure dome.Be provided with the discharge pipe 34 of sending refrigerant compressed gas in the upper end portion of above-mentioned seal container 30, it is equivalent to the refrigerant piping 21 of Fig. 1.
Though scheme not shownly, live axle 35 has centrifugal pump and fuel feeding road, and it connects compressing mechanism 31 and is provided with.Centrifugal pump is set at the underpart of live axle 35, draws the lubricant oil 38 that is stored in seal container 30 bottoms along with the rotation of live axle 35.On the other hand, above-mentioned fuel feeding road, is supplied with the lubricant oil 38 that centrifugal pump is drawn along its axial formation in the inside of live axle 35 to each sliding parts.
Then, the peculiar structure to compressor 11 describes.Fig. 3 is the enlarged view of the major component of first embodiment of the invention.
As shown in Figures 2 and 3, the inside at the seal container 30 of compressor 11 is provided with the first Temperature Detector 39a that is used to detect the refrigerant gas temperature at an upper portion thereof.In addition, near the pasta 37 of lubricant oil 38, be provided with the second Temperature Detector 39b that is used to detect lubricant oil 38 temperature.
The first Temperature Detector 39a is set on the corresponding position, the inside with seal container 30 of the hermetic terminal 12 that is arranged at seal container 30 tops.And this first Temperature Detector 39a directly is installed on the hermetic terminal 12.The second Temperature Detector 39b be set at seal container 30 the bottom and with seal container 30 in the corresponding position of lower limit of pasta position on.
The first Temperature Detector 39a and the second Temperature Detector 39b are connected with an end of each electrode pin 43, and signaling line (omitting among the figure) is connected with the other end.In addition, the other end of above-mentioned each electrode pin 43 is connected with controller 50.
That is because the above-mentioned first Temperature Detector 39a is set at the upper space of compressor 11 inside, so usually detected be the temperature of refrigerant gas.
On the other hand because the second Temperature Detector 39b is set at the lower position of pasta position, so usually detected be the temperature of lubricant oil 38.Therefore, when the detected temperatures of the detected temperatures of the second Temperature Detector 39b and the first Temperature Detector 39a was consistent, the second Temperature Detector 39b is detected to be the temperature of refrigerant gas.Therefore, determining device 51 is judged the lubricant oil deficiency.
Here, on-stream for high pressure dome compressor, the temperature of lubricant oil is 60 ℃, and the temperature of refrigerant gas is 80 ℃, and obviously there is difference in both.But these values are an example just, though it changes because of operating condition, the temperature of lubricant oil can be not consistent with the temperature of refrigerant gas.
In the running, because lubricant oil spues with the refrigeration agent that spues from compressor, so the position change of the pasta 37 in when running seal container 10.Therefore, the detected temperatures of the second Temperature Detector 39b shifts to high-temperature area through variable domain from low-temperature region corresponding to the minimizing of lubricants capacity.By with the detected temperatures comparison that detects the first Temperature Detector 39a of high-temperature area at ordinary times and the pasta 37 that can judge lubricant oil 38 in above-mentioned variable domain or high-temperature area.
As mentioned above, in the present embodiment, can be with simple structure, correctly judge lubricated pasta according to the temperature difference of the detected temperatures of two Temperature Detectors.
(second embodiment)
Fig. 4 is the structural drawing of the hermetic type compressor of the second embodiment of the present invention, and Fig. 5 is the enlarged view of the major component of this compressor.In addition, because the refrigerant circuit explanatory drawing of refrigerating plant is identical with Fig. 1 of first embodiment, omit its explanation.In addition, the structural element identical with first embodiment marked identical reference number and omit its explanation.
As Fig. 4 and shown in Figure 5, the inside at the seal container 30 of compressor 11 disposes the first Temperature Detector 40a that is used to detect lubricant oil 38 temperature in its underpart.In addition, near the pasta 37 of lubricant oil 38, be provided with the second Temperature Detector 40b that is used to detect lubricant oil 38 temperature.
Because the first Temperature Detector 40a is configured in the foot of seal container 30, so detection at ordinary times is the temperature of lubricant oil.The second Temperature Detector 40b be set at seal container 30 the bottom and with seal container 30 in the corresponding position of lower limit of pasta position on.
The first Temperature Detector 40a is connected with an end of each electrode pin 43 with the second Temperature Detector 40b, and the other end is connected with signaling line (omitting among the figure).Then, the other end of above-mentioned each electrode pin 43 is connected with controller 50.
That is, because the above-mentioned first Temperature Detector 40a is configured in the foot of seal container 30, so common detection is the temperature of lubricant oil.In addition, because the second Temperature Detector 40b is set at the lower position of pasta position, so common detection is the temperature of lubricant oil 38.
Therefore, because the common first Temperature Detector 40a and the second Temperature Detector 40b detect the temperature of lubricant oil together, so two detected temperatures unanimities.When lubricant oil than specified value hour, what the second Temperature Detector 40b detected is the temperature of refrigerant gas.Therefore, when the detected temperatures of the first Temperature Detector 40a and the second Temperature Detector 40b was inconsistent, determining device 51 was judged the lubricant oil deficiency.
For high pressure dome compressor, on-stream, the temperature of lubricant oil is 60 ℃, and the temperature of refrigerant gas is 80 ℃, and obviously there is difference in both.But these values are an example just, though it changes because of operating condition, the temperature of lubricant oil and the temperature of refrigerant gas are inconsistent.
In the running, because lubricant oil spues with the refrigeration agent that spues from compressor, so the shift in position of the pasta 37 in the seal container 10 in when running.Therefore, the detected temperatures of the second Temperature Detector 40b, corresponding with the minimizing of lubricants capacity and from low-temperature region through variable domain and moving to high-temperature area.By with the detected temperatures of the first Temperature Detector 40a that detects low-temperature region at ordinary times relatively, and the pasta 37 that can judge lubricant oil 38 is in above-mentioned variable domain or high-temperature area.
As mentioned above, in the present embodiment, can utilize simple structure, correctly judge lubricated pasta according to the temperature difference of the detected temperatures of two Temperature Detectors.
Claims (7)
1. a hermetic type compressor (11), comprise: seal container (30), be installed in the motor (32) in the described seal container, be configured in the described seal container, by described electric motor driven compressing mechanism (31), be enclosed in the described seal container, the lubricant oil (38) that is used for lubricated described compressing mechanism, be enclosed in the described seal container, refrigerant gas as the medium that forms freeze cycle, be configured in the first Temperature Detector (39a on the assigned position in the described seal container, 40a), near and the second Temperature Detector (39b of pasta that is configured in the described lubricant oil in the described seal container, 40b), it is characterized in that:
Described assigned position is meant near near any one party that the upper end is or the lower end is in the described seal container, based on the described first Temperature Detector (39a, 40a) (39b, detected temperatures 40b) is judged the amount of the described lubricant oil (38) in the described seal container with described second Temperature Detector
In described seal container, also have hermetic terminal (12), described first Temperature Detector (39a, 40a) and described second Temperature Detector (39b 40b) is connected with described hermetic terminal,
Described hermetic terminal (12) is three terminals, and (39a, (39b, side 40b) is connected with a terminal described first Temperature Detector jointly for side 40a) and described second Temperature Detector.
2. hermetic type compressor as claimed in claim 1 is characterized in that:
(39b 40b) is configured in according to operating condition and immerses or expose on the position of described lubricant oil (38) described second Temperature Detector.
3. hermetic type compressor as claimed in claim 1 is characterized in that:
When described second Temperature Detector (39b, 40b) detected be judged as when being the temperature of described lubricant oil (38) normal, the detected quantity not sufficient that is judged as described lubricant oil when being the temperature of described refrigerant gas.
4. hermetic type compressor as claimed in claim 1 is characterized in that:
Described first Temperature Detector (39a) is configured near the interior upper end of described seal container, detects the temperature of described refrigerant gas.
5. hermetic type compressor as claimed in claim 4 is characterized in that:
Consistent according to the detected temperatures of described first Temperature Detector (39a) and described second Temperature Detector (39b) judged the deficiency of the amount of described lubricant oil (38).
6. hermetic type compressor as claimed in claim 1 is characterized in that:
Described first Temperature Detector (40a) is configured near the interior lower end of described seal container, detects the temperature of described lubricant oil (38).
7. hermetic type compressor as claimed in claim 6 is characterized in that:
Inconsistent according to the detected temperatures of described first Temperature Detector (40a) and described second Temperature Detector (40b) judged the deficiency of the amount of described lubricant oil (38).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004143460 | 2004-05-13 | ||
| JP2004143460A JP2005325733A (en) | 2004-05-13 | 2004-05-13 | Hermetic compressor |
| JP2004165274 | 2004-06-03 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1696506A CN1696506A (en) | 2005-11-16 |
| CN100416100C true CN100416100C (en) | 2008-09-03 |
Family
ID=35349364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200510069247XA Expired - Fee Related CN100416100C (en) | 2004-05-13 | 2005-05-12 | Hermetic compressor and refrigeration unit |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2005325733A (en) |
| CN (1) | CN100416100C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009138693A (en) | 2007-12-10 | 2009-06-25 | Mitsubishi Electric Corp | Hermetic compressor |
| US9341187B2 (en) * | 2013-08-30 | 2016-05-17 | Emerson Climate Technologies, Inc. | Compressor assembly with liquid sensor |
| JP6273573B2 (en) * | 2014-02-06 | 2018-02-07 | パナソニックＩｐマネジメント株式会社 | Refrigeration circuit |
| CN106321440B (en) * | 2016-10-18 | 2018-06-01 | 珠海格力节能环保制冷技术研究中心有限公司 | The control method of compressor, electric refrigerator and compressor |
| CN107288886B (en) * | 2017-06-16 | 2020-02-11 | 特灵空调系统(中国)有限公司 | Oil level control method for low-pressure cavity compressor system |
-
2004
- 2004-05-13 JP JP2004143460A patent/JP2005325733A/en active Pending
-
2005
- 2005-05-12 CN CNB200510069247XA patent/CN100416100C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1696506A (en) | 2005-11-16 |
| JP2005325733A (en) | 2005-11-24 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080903 Termination date: 20110512 |