CN1847653A - Method and device for temperature control of open style compressor - Google Patents
Method and device for temperature control of open style compressor Download PDFInfo
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- CN1847653A CN1847653A CNA2006100741926A CN200610074192A CN1847653A CN 1847653 A CN1847653 A CN 1847653A CN A2006100741926 A CNA2006100741926 A CN A2006100741926A CN 200610074192 A CN200610074192 A CN 200610074192A CN 1847653 A CN1847653 A CN 1847653A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/01—Heaters
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Abstract
The present invention provides temperature control mathod and device for a open type compressor which improves the reliability and durability of an electromagnetic coil by reducing power consumption required for heating around a sealing device to prevent leak from an open type compressor during a low temperature. When a compressor atmospheric temperature detected by a temperature sensor 36 is lower than a first preset temperature, a compressor heater 28 provided on a casing 11 around the sealing device 15 is energized for heating around the sealing device. When the compressor atmospheric temperature is lower than a second preset temperature which is lower than the first preset temperature, the electromagnetic coil 23 of an electromagnetic clutch 20 is also energized for heating around the sealing device with the electromagnetic coil in addition to the compressor heater. The compressor heaters are provided in numbers and at least either the first or second preset temperatures are set in numbers. The number of compressor heaters can be increased which are energized as the compressor atmospheric temperature lowers.
Description
Technical field
The present invention relates to a kind of temperature control method and device thereof that utilizes the open compressor of prime mover driven via magnetic clutch.
Background technique
As this open compressor, have and open the disclosed technology of 2004-084631 communique (patent documentation 1) as the spy.This is the open compressor that is used for the refrigerant of compressed air modifier, in housing, be provided with the fixed turbine and the movable turbine of the pressing chamber that forms refrigerant etc., external impetus via driving belt and pulley drive is connected with movable turbine from the outstanding axle of housing, housing and spool between be provided with mechanical seal.
The structure of the open compressor of this patent documentation 1 itself, in fact with the open compressor 10 of embodiments of the present invention shown in Figure 2 in the device removed behind compressor heater 28, the 28A just the same.This open compressor 10, the main shaft 12 that is connected with the movable turbine of the compression mechanical part of the turbine shape of the inside that is arranged on housing 11 is supported on the housing 11 by rotary bearing 13a, 13b, and the front end of main shaft 12 is outstanding from the cylindrical portion 11a that forms at housing 11.In main shaft 12 that is communicated with the pressing chamber of compression mechanical part and the gap between the housing 11, be provided with the mechanical seal of forming by Stationary side seal ring 16 and rotary side seal ring 17 15, seal.Stationary side seal ring 16 is at the interior week of cylindrical portion 11a hermetic chimeric O type ring, utilizes the moving towards inner flange and lock ring restriction axial direction of the inner end of cylindrical portion 11a.Rotary side sealing 17 is kept airtight conditions at the intermediate portion of main shaft 12 via O type ring 17a, and along the free friction slip of axis.By and the spring seat 18a of the back side contacts of this O type ring 17a and be installed between the rotary side retaining plate 19 on the main shaft 12 and be fitted with spring 18, the circular protrusion of the front end of rotary side seal ring 17 is pressed on the Stationary side seal ring 16, and can frictional rotation.
The cross section of rear openings is on the periphery of the rotor 21 of the ring-type of the U word shape cylindrical portion 11a that is supported on housing 11 via rotary bearing 21a, and coaxial with main shaft 12.The external impetus of gas engine etc. drives rotor 21 rotations via driving belt.The cross section that comprises front openings is the yoke of being made by magnetic materials such as iron 22 and the electromagnet 24 that constitutes of the electromagnetic coil 23 that is provided with of portion within it of the ring-type of U word shape, separate in the U word shape cross section that certain interval is inserted in this rotor 21, and be installed on the cylindrical portion 11a by supporting plate 24a.Wheel hub 25 combines by the front end of spline with the main shaft of giving prominence to from cylindrical portion 11a 12, and utilizes bolt.The friction plate of being made up of magnetic materials such as iron 26 with the front-end face ring-type in opposite directions of rotor 21 is installed in via leaf spring 32 on the flange part of this wheel hub 25.Described rotor 21, electromagnet 24 and friction plate 26 constitute magnetic clutch 20, under free state as shown in Figure 2, form the clutch play of regulation between the back of the front-end face of rotor 21 and friction plate 25.
In described open compressor, even utilizing external impetus to drive under the state of rotor 21 rotations via line belt (not shown) etc., if not to electromagnetic coil 23 energisings, as shown in Figure 2, magnetic clutch 20 is in disengaged position, have the gap between the front-end face of rotor 21 and the friction plate 26, so main shaft 12 can not rotate.But if to electromagnetic coil 23 energising, friction plate 26 is subjected to the attraction of electromagnet 24 and is inhaled end face at rotor 21, and magnetic clutch 20 is in bonding state, and main shaft 12 is with rotor 21 rotations, and open compressor 10 moves.
In described technology, if electromagnetic coil 23 is switched on for open compressor 10 is moved, the end face that friction plate 26 is inhaled at rotor 21, then the power of the inside effect of axial direction acts on the main shaft 12 via leaf spring 27, and main shaft 12 can occur some in the direction and move.Since rotary side seal ring 17 via O type ring 17a hermetic and can along the free friction slip of axial direction be arranged on the main shaft 12, and be pressed towards Stationary side seal ring 16 by spring 18, therefore even main shaft 12 some occur along axial direction as mentioned above and moves, usually the circular protrusion of the front end of rotary side seal ring 17 can not leave Stationary side seal ring 16 yet, thereby can keep the sealing state of mechanical seal 15.But, do not have at compressor 10 under the state of action, after under low temperature environment, placing certain hour, when the ambient temperature of mechanical seal 15 (hereinafter to be referred as the sealed department ambient temperature) reduces, because with rubber etc. is that the O type ring 17a of the mechanical seal 15 of material hardens, the sliding-frictional resistance of rotary side seal ring 17 relative main shafts 12 increases, therefore if main shaft 12 some occur along axial direction as mentioned above and moves, rotary side seal ring 17 also is moved simultaneously, and the circular protrusion of its front end can leave Stationary side seal ring 16.Therefore, under this state to after electromagnetic coil 23 energising, open compressor 16 being moved, the leakage of refrigerant etc. can take place.
In order to address this is that; in patent documentation 1; when external impetus is out of service; control mechanism carries out the energising of stipulated time to electromagnetic coil; utilize the heating of electromagnetic coil like this; heat near making mechanical seal via shell, thereby can prevent the sclerosis of O type ring, guarantee the sealability of mechanical seal.Also have, in this patent documentation 1, utilize the heating of electromagnetic coil to make near the heating mechanical seal, thereby do not need only to be used for the parts such as heater of the preheating of compressor, can avoid increasing cost.
The concrete action of the technology of this patent documentation 1 then, is described.Shown in Fig. 6 (a), in this technology, when the ambient temperature (hereinafter to be referred as compressor ambient temperature) around the compressor 10 descends, when compressor ambient temperature surpasses predefined decline side mark fixed temperature tf1, electromagnetic coil 23 is switched on, conversely, when compressor ambient temperature rises gradually, compressor ambient temperature surpasses when being set at the uplifted side set point of temperature tf2 that is higher than decline side mark fixed temperature tf1, stops electromagnetic coil 23 energisings.Variation characteristic with respect to the sealed department ambient temperature of compressor ambient temperature, shown in Fig. 6 (b), when not heating by electromagnetic coil 23 is switched on, shown in the dotted line of characteristic L1 and its prolongation, linearly change with respect to compressor ambient temperature, if compressor ambient temperature descends, can reach refrigerant and leak upper limiting temperature (refrigerant leaks the CLV ceiling limit value of the sealed department ambient temperature when taking place) T0.But, compressor ambient temperature descends gradually, surpass decline side mark fixed temperature tf1, electromagnetic coil 23 is switched on, then the sealed department ambient temperature moves to the characteristic L7 of upside owing to the heating of electromagnetic coil 23, even compressor ambient temperature descends, can not reach refrigerant yet and leak upper limiting temperature T0.In addition, compressor ambient temperature rises gradually, surpasses uplifted side set point of temperature tf2, disconnects the energising to electromagnetic coil 23, then can move to original characteristic L1 from the characteristic L7 of upside.In addition, shown in Fig. 6 (c), when descending gradually, compressor ambient temperature seal near the 15 required heats that add by gadgetize, add the position A1 that heat (=0) is located by the minimum that connects decline side mark fixed temperature tf1, represent with the characteristic H of the position A2 at the maximum heating amount place of predefined operation lower limit temperature tr.
In addition, open in the disclosed technology of 2002-031386 communique (patent documentation 2),, adopt heater that compressor is carried out preheating in order to realize same purpose the spy.In this technology, be provided with operation compressor is carried out preheating preheating mode control mechanism and in this control mechanism the control mechanism of compulsory commutation preheating mode, thisly when going out obviously can not move under the situation of air conditioner, can prevent from compressor is carried out preheating, thus can saving power.
Patent documentation 1: the spy opens 2004-084631 communique (paragraph 0001-0004, Fig. 1, Fig. 2)
Patent documentation 2:JP spy open the 2004-031386 communique (paragraph 0001-0007, Fig. 1)
According to the technology of patent documentation 1,, can avoid the cost of installation cost to increase owing to do not need only to be used for the parts such as heater of the preheating of compressor.But, because the specification of electromagnetic coil is set at and satisfies the desired function of magnetic clutch, in addition, owing to do not consider the heat transfer property of the part that is provided with mechanical seal of shell, therefore the consumption electric energy of the electromagnetic coil that uses in order to make sealed department ambient temperature rising specified value can increase.Also have, shown in Fig. 6 (c), when compressor ambient temperature descends gradually, the required required heat that always adds that adds heat shown in the supply characteristics H, be equivalent to link position A1, the A2 of Fig. 6 (c), the leg-of-mutton area of A4, but the energising amount of the regulation of electromagnetic coil is equivalent to maximum heating amount A2 between set point of temperature tf1 and the operation lower limit temperature tr, therefore in fact always adds heat for connecting the quadrilateral of A1, A2, A3, A4, the actual heat that always adds is required 2 times of always adding heat.Like this, the electric energy of electromagnetic coil consumption is many, thereby can be in high temperature, therefore can accelerate to be used for the carrying out of deterioration of resin of the insulation of electromagnetic coil, has the reliability that reduces electromagnetic coil and the problem of durability.
Also have, in the technology of patent documentation 2, adopted the heater of the special use that compressor is heated, optimum specifications that like this can given heating and the position is set, compare with the situation of utilizing the electromagnetic coil heating, can reduce the electric energy that is used to make sealed department ambient temperature rising specified value.But shown in Fig. 6 (c), also having the actual heat that always adds when adopting this heater is required 2 times the problem that always adds heat, therefore differs and fully reduces the electric energy that heater is consumed surely.The objective of the invention is to address these problems.
Summary of the invention
The temperature control method of the open compressor of first invention according to the present invention, wherein, at shell by compressor having internally mounted structure portion, be connected with compression mechanical part and make its action, simultaneously can connect shell with rotating freely, be projected into the outside, via magnetic clutch by the main shaft of prime mover driven, utilize seal arrangement pair main shaft that is communicated with the pressing chamber of compression mechanical part and the gap between the shell to carry out in the open compressor that airtight sealing forms, when the compressor ambient temperature around the open compressor is lower than the 1st set point of temperature, the compressor heater that is arranged near the shell the seal arrangement is switched on, to heating near the seal arrangement, when compressor ambient temperature is lower than than also low the 2nd set point of temperature of the 1st set point of temperature, electromagnetic coil to magnetic clutch is also switched on, except the compressor heater, also utilize electromagnetic coil to heating near the seal arrangement.
In the temperature control method of first described open compressor of invention, at least one side in preferred compressed machine heater and the electromagnetic coil is provided with a plurality of, and at least one side in the 1st and the 2nd set point of temperature is also most to be set, and increases the compressor heater of switching on and the quantity of at least one side in the electromagnetic coil along with the reduction of compressor ambient temperature.
In the temperature control method of first described open compressor of invention, also can increase energising amount along with the reduction of compressor ambient temperature at least one side in compressor heater and the electromagnetic coil.
Temperature control apparatus according to the open compressor of the 6th invention, wherein, at shell by compressor having internally mounted structure portion, be connected with compression mechanical part and make its action, can connect shell simultaneously with rotating freely, be projected into the outside, via magnetic clutch by the main shaft of prime mover driven, utilize seal arrangement pair main shaft that is communicated with the pressing chamber of compression mechanical part and the gap between the shell to carry out in the open compressor that airtight sealing forms, also have: temperature transducer, it detects the compressor ambient temperature around the open compressor; The compressor heater, it is arranged near the shell of seal arrangement; And control mechanism, when this control mechanism is worked as the compressor ambient temperature that is detected and is lower than the 1st set point of temperature, the compressor heater is switched on, to heating near the seal arrangement, and when compressor ambient temperature is lower than than also low the 2nd set point of temperature of the 1st set point of temperature, electromagnetic coil to magnetic clutch is also switched on, and except the compressor heater, also utilizes electromagnetic coil to heating near the seal arrangement.
In the temperature control apparatus of the 6th the described open compressor of invention, at least one side in preferred compressed machine heater and the electromagnetic coil is provided with a plurality of, and at least one side in the 1st and the 2nd set point of temperature is also most to be set, control mechanism is along with the reduction of the compressor ambient temperature that is detected, and compressor heater that increase is switched on and the quantity of at least one side in the electromagnetic coil.
In the temperature control apparatus of the 6th the described open compressor of invention, control mechanism also can increase the energising amount at least one side in compressor heater and the electromagnetic coil along with the reduction of compressor ambient temperature.
Invention according to the temperature control method of the open compressor of first invention, because when the compressor ambient temperature around the open compressor is lower than the 1st set point of temperature, the compressor heater that is arranged near the shell the seal arrangement is switched on, to heating near the seal arrangement, when compressor ambient temperature is lower than than also low the 2nd set point of temperature of the 1st set point of temperature, electromagnetic coil to magnetic clutch is also switched on, except the compressor heater, also utilize electromagnetic coil to heating near the seal arrangement, therefore between the 1st and the 2nd set point of temperature, only the compressor heater is switched on, seal arrangement is heated, when being lower than the 2nd set point of temperature, compressor heater and electromagnetic coil both sides are all switched on, to heating near the seal arrangement.That is,, be used for heating the electric energy that is consumed near the seal arrangement thereby can correspondingly reduce owing between the 1st and the 2nd set point of temperature, electromagnetic coil is not switched on.And owing to reduced the current"on"time of the many electromagnetic coils of the consumption electric energy that is used to make sealed department ambient temperature rising specified value, thereby further reduced heating required consumption electric energy near the seal arrangement, and reduced the temperature and time of the electromagnetic coil of heating thus, postpone to be used for the carrying out of deterioration of resin of the insulation of electromagnetic coil, thereby can improve the reliability and the durability of electromagnetic coil.
Invention according to the temperature control method of the open compressor of second invention, because at least one side in compressor heater and the electromagnetic coil is provided with majority, and at least one side in the 1st and the 2nd set point of temperature is also most to be set, thereby therefore compressor heater that increase is switched on along with the reduction of compressor ambient temperature and the quantity of at least one side in the electromagnetic coil can further reduce near the consumption electric energy that is used for heating the seal arrangement.
Invention according to the temperature control method of the open compressor of the 3rd invention, because reduction along with compressor ambient temperature, increase is to the energising amount of at least one side in compressor heater and the electromagnetic coil, therefore the same with second invention, can further reduce near the consumption electric energy that is used for heating the seal arrangement, and owing to do not need to be provided with a plurality of compressor heaters and electromagnetic coil, thereby can avoid cost to increase.
According to the invention of the temperature control apparatus of the open compressor of the 6th invention, owing to have:, it detects the compressor ambient temperature around open compressor; The compressor heater, it is arranged near the shell of seal arrangement; And control mechanism, when this control mechanism is worked as the compressor ambient temperature that is detected and is lower than the 1st set point of temperature, the compressor heater is switched on, to heating near the seal arrangement, and when compressor ambient temperature is lower than than also low the 2nd set point of temperature of the 1st set point of temperature, electromagnetic coil to magnetic clutch is also switched on, except the compressor heater, also utilize electromagnetic coil to heating near the seal arrangement, therefore control mechanism is only switched on to the compressor heater between the 1st and the 2nd set point of temperature, to heating near the seal arrangement, when being lower than the 2nd set point of temperature, compressor heater and electromagnetic coil both sides are all switched on, to heating near the seal arrangement.That is,, be used for heating the electric energy that is consumed near the seal arrangement thereby can correspondingly reduce owing between the 1st and the 2nd set point of temperature, electromagnetic coil is not switched on.And owing to reduced the current"on"time of the many electromagnetic coils of the consumption electric energy that is used to make sealed department ambient temperature rising specified value, thereby further reduced heating required consumption electric energy near the seal arrangement, and reduced the temperature and time of the electromagnetic coil of heating thus, postpone to be used for the carrying out of deterioration of resin of the insulation of electromagnetic coil, thereby can improve the reliability and the durability of electromagnetic coil.
Invention according to the temperature control apparatus of the open compressor of the 7th invention, because at least one side in compressor heater and the electromagnetic coil is provided with a plurality of, and at least one side in the 1st and the 2nd set point of temperature is also most to be set, therefore compressor heater that the control mechanism increase is switched on along with the reduction of the compressor ambient temperature that is detected and the quantity of at least one side in the electromagnetic coil can further reduce near the consumption electric energy that is used for heating the seal arrangement.
Invention according to the temperature control apparatus of the open compressor of the 8th invention, because control mechanism is along with the reduction of compressor ambient temperature, increase is to the energising amount of at least one side in compressor heater and the electromagnetic coil, therefore the same with the 7th invention, can further reduce near the consumption electric energy that is used for heating the seal arrangement, and owing to do not need to be provided with a plurality of compressor heaters and electromagnetic coil, thereby can avoid cost to increase.
Description of drawings
Fig. 1 is the integrally-built system diagram of a mode of execution of the temperature control apparatus of expression open compressor of the present invention.
Fig. 2 is the side view after key position that expression is used for the open compressor of mode of execution shown in Figure 1 cuts.
Fig. 3 is the explanatory drawing of action of the 1st mode of execution of the temperature control method of explanation open compressor of the present invention.
Fig. 4 is the flow chart of the action of expression the 1st mode of execution shown in Figure 3.
Fig. 5 is the explanatory drawing of action of the 2nd mode of execution of the temperature control method of explanation open compressor of the present invention.
Fig. 6 is the explanatory drawing of action of an example of temperature control method of the open compressor of explanation prior art.
Among the figure: the 1-open compressor; The 11-shell; The 12-main shaft; 15-seal arrangement (mechanical seal); The 20-magnetic clutch; The 23-electromagnetic coil; 28-compressor heater; 30-prime mover (motor); The 35-control computer; The 36-temperature transducer.
Embodiment
Below utilize Fig. 1～Fig. 4, describe with regard to the temperature control method of open compressor of the present invention and the 1st mode of execution of device thereof.As shown in Figure 1, the temperature control apparatus of the open compressor of the 1st mode of execution is by constituting as lower member: open compressor 10; To its gas engine that drives (prime mover) 30; Control computer (control mechanism) 35, the action of its control open compressor 10; The temperature transducer 36 that is connected with control computer 35; Switch starter 37; Stop switch 38.This open compressor 10 is arranged on outdoor special use and accommodates in the case.Therefore, near the temperature the seal arrangement 15 of open compressor 10 is relevant with compressor ambient temperature.Therefore, adopt temperature transducer 36 to detect compressor ambient temperature, have cost advantage, thereby can control near the ambient temperature the seal arrangement 15.
Open compressor 10, except near the part of the shell 11 the mechanical seal (seal arrangement) 15 around being provided with the banded compressor heater 28, identical with the open compressor shown in Figure 2 10 in the DESCRIPTION OF THE PRIOR ART of front, therefore omit its explanation.As shown in Figure 1, by at the trough of belt 21b of the periphery of rotor 21 and be installed in the driving belt of laying between the drive pulley 31 on the output shaft 30a of gas engine 30 32, this open compressor 10 is driven.
Temperature transducer 36 detects compressor ambient temperature, and is input to control computer 35.This open compressor 10 and to its motor that drives 30, can be arranged on indoor, be positioned at that case is accommodated in outdoor special use, outdoor window is inferior, compressor ambient temperature is indoor or accommodate temperature in the case for it in preceding 2 kinds of situations, is atmospheric temperature in latter instance.Switch starter 37 and stop switch 38 be by manually or in a certain order moving, and the signal of starting or shutting engine down 30 is sent to control computer 35.
Also have, shown in Fig. 3 (a), when compressor ambient temperature when compressor heater 28 and electromagnetic coil 23 all descend gradually less than the higher temperature of energising, if the compressor ambient temperature of utilizing temperature transducer 36 to detect is lower than predefined the 1st decline side mark fixed temperature ta1 (for example 5 ℃), control computer 35 at first begins 28 energisings of compressor heater, be lower than predefined the 2nd decline side mark fixed temperature tb1 (for example-5 ℃) if continue to drop to, begin electromagnetic coil 23 energisings.When compressor ambient temperature from compressor heater 28 and electromagnetic coil 23 all when the lower temperature of energising rises gradually, if rising to, compressor ambient temperature surpasses the 2nd uplifted side set point of temperature tb2 (for example 0 ℃) that is set at a little higher than the 2nd decline side mark fixed temperature tb1 (but being lower than the 1st decline side mark fixed temperature ta1), control computer 35 at first stops the energising to electromagnetic coil 23, if continue to rise to the 1st uplifted side set point of temperature ta2 (for example 10 ℃) that surpasses predefined a little higher than the 1st decline side mark fixed temperature ta1, then stop energising to compressor heater 28.The 1st decline side mark fixed temperature ta1 and the 1st uplifted side set point of temperature ta2 lump together as the 1st set point of temperature ta, and the 2nd decline side mark fixed temperature tb1 and the 2nd uplifted side set point of temperature tb2 lump together as the 2nd set point of temperature tb.
Then, utilize Fig. 3 and Fig. 4, the action of the 1st mode of execution is described.Under the state of connecting power supply, though whether exist motor 30 action, whether exist magnetic clutch 20 action, whether have the action of compressor heater 28, control computer 35 is every the control program of stipulated time circular flow flow chart shown in Figure 4.In addition, in this flow chart, motor omits and is expressed as " E/G ", and compressor ambient temperature is omitted and is expressed as " C/P environment ".
The same with the situation of front prior art shown in Figure 6, if electromagnetic coil 23 and not energising of compressor heater 28, variation characteristic with respect to the sealed department ambient temperature of compressor ambient temperature, shown in the dotted line of characteristic L1 (with reference to Fig. 3 (b)) and its prolongation, change point-blank with respect to compressor ambient temperature, compressor ambient temperature can drop to refrigerant and leak below the upper limiting temperature T0, but in the 1st mode of execution, by moving control program shown in Figure 4, even compressor ambient temperature descends, the sealed department ambient temperature can not drop to refrigerant yet and leak below the upper limiting temperature T0.
Control computer 35 at first in the step 101 of the control program of Fig. 4, judge motor 30 stop after whether through more than 30 minutes.Motor 30 is in service, and open compressor 10 is owing to its operation is heated, if motor 30 stops the back not through more than 30 minutes, the sealed department ambient temperature can not drop to refrigerant and leak below the upper limiting temperature T0 (for example 0 ℃).Therefore, owing to do not need electromagnetic coil 23 and compressor heater 28 are switched in the meantime, leak more than the upper limiting temperature T0, at refrigerant so control computer 35 stops the control program of service chart 4 immediately to keep the sealed department ambient temperature.
After motor 30 stops through more than 30 minutes, whether control computer 35 is judged and is utilized compressor ambient temperature that temperature transducer 36 detected for being lower than the 1st decline side mark fixed temperature ta1 (step 102), if be lower than, then to compressor heater 28 heating (step 103) of switching on, the sealed department ambient temperature moves to a characteristic L2 (with reference to Fig. 3 (b)) like this.Then, whether control computer 35 is judged and is utilized compressor ambient temperature that temperature transducer 36 detected for being lower than the 2nd decline side mark fixed temperature tb1 (step 104), if be lower than, then to electromagnetic coil 23 heating (step 105) of also switching on, the sealed department ambient temperature moves to a last characteristic L3 like this, stops the control program of service chart 4 under this state.
If judge that in step 102 compressor ambient temperature that is detected is not less than the 1st decline side mark fixed temperature ta1, whether 35 judgements of control computer utilize compressor ambient temperature that temperature transducer 36 detected for being higher than the 1st uplifted side set point of temperature ta2 (step 106), if not, then remain stationary, if, then stop energising (step 107), stop the control program of service chart 4 compressor heater 28.Under this state, the sealed department ambient temperature is positioned in the solid line portion of characteristic L1.In addition, step 107 is used for the situation that correspondence termination under compressor heater 28 "on" positions moves the control program of last time.
In addition, in step 104, if the compressor ambient temperature that is detected is not less than the 2nd decline side mark fixed temperature tb1,35 of control computer judge that whether the compressor ambient temperature that is detected is for being higher than the 2nd uplifted side set point of temperature tb2 (step 108), if not, then remain stationary, if, then stop energising (step 109), stop the control program of service chart 4 electromagnetic coil 23.Under this state, the sealed department ambient temperature is positioned in the solid line portion of characteristic L2.In addition, step 109 is used for the situation that correspondence termination under electromagnetic coil 23 "on" positions moves the control program of last time.
In addition, control computer 35 is utilized control program (in figure omit) control motor 30 and the magnetic clutch 20 different with flow chart shown in Figure 4, operation open compressor 10.In this control program, if from switch starter 37 input engine start instructions, control computer 35 does not pilot engine 30 at once when electromagnetic coil 23 is switched on, but when electromagnetic coil 23 energisings, engine load when starting in order to reduce, temporarily stop earlier energising, restart motor electromagnetic coil 23.After motor 30 startings,, transmit to carry out original power again to electromagnetic coil 23 energisings.
As above illustrate described, in the 1st mode of execution, shown in Fig. 3 (b), between the 1st set point of temperature ta (ta1 and ta2) and operation lower limit temperature tr, compressor heater 28 is switched on, between the 2nd set point of temperature tb (tb1 and tb2) that is lower than the 1st set point of temperature ta and operation lower limit temperature tr, electromagnetic coil 23 is switched on.By these two heating of 23,28, the sealed department ambient temperature changes shown in solid line L1, L2, L3, even compressor ambient temperature reduces, the sealed department ambient temperature can not be lower than refrigerant yet and leak upper limiting temperature T0.Therefore, the leakage of the aforesaid refrigerant that occurs when energising makes open compressor 10 actions to electromagnetic coil 23 etc. can not take place.
In addition, when compressor ambient temperature descends gradually, should gadgetize near the sealing 15 required to add heat also the same with Fig. 6 (c) in Fig. 3 (c), the characteristic H of position A2 that is added the maximum heating amount of the position A1 of heat (=0) and predefined operation lower limit temperature tr by the minimum of connection the 1st decline side mark fixed temperature ta1 represents.Corresponding therewith, in the 1st mode of execution, utilize compressor heater 28 and electromagnetic coil 23 to provide for the required required heat that always adds that adds heat shown in the supply characteristics H.Utilize the heat that adds that compressor heater 28 provides, be equivalent to from the 1st decline side mark fixed temperature ta1 to quadrilateral A1, A4 the operation lower limit temperature tr, the area of B3, B1, utilize the heat that adds that electromagnetic coil 23 provides, be equivalent to from the 2nd decline side mark fixed temperature tb1 to quadrilateral B2, B3 the operation lower limit temperature tr, the area of A2, C1.Promptly, owing between the 1st decline side mark fixed temperature ta1 and the 2nd decline side mark fixed temperature tb1, electromagnetic coil 23 is not switched on, therefore the heat that always adds of the reality of the 1st mode of execution is compared with quadrilateral A1, A4, A2, the A3 of Fig. 6 (c) of prior art, reduced the area that is equivalent to quadrilateral B1, B2, C1, A3, correspondingly reduced consumption electric energy heating near the mechanical seal 15.And as previously mentioned, owing to reduced the current"on"time of the electromagnetic coil 23 that is used to make the required consumption electric energy ratio piston compressor heater more than 28 of sealing portion ambient temperature rising specified value, thereby further reduced heating required consumption electric energy near the mechanical seal 15, and reduced the temperature and time of the electromagnetic coil 23 of heating thus, postpone to be used for the carrying out of deterioration of resin of the insulation of electromagnetic coil, thereby can improve the reliability and the durability of electromagnetic coil.
Then, utilize Fig. 1 and Fig. 5, the temperature control method of open compressor of the present invention and the 2nd mode of execution of device are described.Shown in the two point dotted line of Fig. 1, the temperature control apparatus of the open compressor of the 2nd mode of execution is except being provided with the 2nd compressor heater 28A, and is identical with the 1st mode of execution, therefore omits more detailed structure explanation.In addition, the 1st compressor heater utilization is represented with the identical symbol 28 that the 1st mode of execution uses.
Shown in Fig. 5 (a), when compressor ambient temperature from the 1st and the 2nd compressor heater 28,28A and electromagnetic coil 23 all less than the higher temperature of energising when descending gradually, if the compressor ambient temperature of utilizing temperature transducer 36 to detect is lower than predefined the 1st decline side mark fixed temperature tc1, control computer 35 at first begins 28 energisings of the 1st compressor heater, be lower than predefined the 2nd decline side mark fixed temperature td1 if continue to drop to, begin the 2nd compressor heater 28A is switched on.Be lower than predefined the 3rd decline side mark fixed temperature te1 if continue to drop to, then begin electromagnetic coil 23 energisings.In addition, when compressor ambient temperature from two compressor heaters 28,28A and electromagnetic coil 23 all at the lower temperature of energising when rising gradually, surpass the 3rd uplifted side set point of temperature te2 (for example 0 ℃) that is set at a little higher than the 3rd decline side mark fixed temperature te1 (but being lower than the 2nd decline side mark fixed temperature td1) if compressor ambient temperature rises to, control computer 35 at first stops the energising to electromagnetic coil 23.If compressor ambient temperature continues to rise to the 2nd uplifted side set point of temperature td2 that surpasses predefined a little higher than the 2nd decline side mark fixed temperature td1 (but being lower than the 1st decline side mark fixed temperature tc1), stop energising to the 2nd compressor heater 28A.If continue to rise to the 1st uplifted side set point of temperature tc2 that surpasses predefined a little higher than the 1st decline side mark fixed temperature tc1, stop energising to the 1st compressor heater 28.The 1st decline side mark fixed temperature tc1 and the 1st uplifted side set point of temperature tc2 lump together as the 1st set point of temperature tc, the 2nd decline side mark fixed temperature td1 and the 2nd uplifted side set point of temperature td2 lump together as the 2nd set point of temperature td, and the 3rd decline side mark fixed temperature te1 and the 3rd uplifted side set point of temperature te2 lump together as the 3rd set point of temperature te.
In the 2nd mode of execution, the explanation of the flow chart of control program and the 1st mode of execution are basic identical, the Therefore, omited explanation.In the 2nd mode of execution, shown in Fig. 5 (b), between the 1st set point of temperature tc (tc1 and tc2) and operation lower limit temperature tr, the 1st compressor heater 28 is switched on, between the 2nd set point of temperature td (td1 and td2) that is lower than the 1st set point of temperature tc and operation lower limit temperature tr, the 2nd compressor heater 28A is switched on, between the 3rd set point of temperature te (te1 and te2) that is lower than the 2nd set point of temperature td and operation lower limit temperature tr, electromagnetic coil 23 is switched on.By this three 28,28A, 23 heating, the sealed department ambient temperature changes shown in each characteristic L1, L4 of solid line, L5, L6, even compressor ambient temperature reduces, the sealed department ambient temperature can not be lower than refrigerant yet and leak upper limiting temperature T0.Therefore, the leakage of the aforesaid refrigerant that occurs when energising makes open compressor 10 actions to electromagnetic coil 23 etc. can not take place.
In addition, when compressor ambient temperature descends gradually, should gadgetize near the sealing 15 required heats that add, also the same with Fig. 3 (c) in Fig. 5 (c) with Fig. 6 (c), represent by the characteristic H of link position A1 and A2.Corresponding therewith, in the 2nd mode of execution, utilize two compressor heaters 28,28A and electromagnetic coil 23 to provide for the required required heat that always adds that adds heat shown in the supply characteristics H.Utilize the heat that adds that the 1st compressor heater 28 provides, be equivalent to from the 1st decline side mark fixed temperature tc1 to quadrilateral A1, A4 the operation lower limit temperature tr, the area of D3, D1, utilize the heat that adds that the 2nd compressor heater 28A provides, be equivalent to from the 2nd decline side mark fixed temperature td1 to quadrilateral D2, D3 the operation lower limit temperature tr, the area of E3, E1, utilize the heat that adds that electromagnetic coil 23 provides, be equivalent to from the 3rd decline side mark fixed temperature te1 to quadrilateral E2, E3 the operation lower limit temperature tr, the area of A2, F1.Promptly, owing between the 1st decline side mark fixed temperature tc1 and the 2nd decline side mark fixed temperature td1, the 2nd compressor heater 28A is not switched on, between the 1st decline side mark fixed temperature tc1 and the 3rd decline side mark fixed temperature te1, electromagnetic coil 23 is not switched on, so quadrilateral A1 of Fig. 6 that always adds heat and prior art (c) of the reality of the 2nd mode of execution, A4, A2, A3 compares, reduced and be equivalent to Hexagon D1, D2, E1, E2, F1, the area of A3, compare with described the 1st mode of execution, further reduced consumption electric energy heating near the mechanical seal 15.And as previously mentioned, owing to reduced the current"on"time of the electromagnetic coil 23 that is used to make the required consumption electric energy ratio piston compressor heater more than 28 of sealing portion ambient temperature rising specified value, thereby further reduced heating required consumption electric energy near the mechanical seal 15, reduced the temperature and time of the electromagnetic coil 23 of heating thus simultaneously, postpone to be used for the carrying out of deterioration of resin of the insulation of electromagnetic coil, thereby can improve the reliability and the durability of electromagnetic coil.
In described the 2nd mode of execution, be provided with 2 compressor heaters 28,28A, in compressor ambient temperature when being minimum, to two compressor heaters 28,28A energising, and when compressor ambient temperature raises, the 1st compressor heater 28 switched on.But the compressor heater more than 3 also can be set,, increase the quantity of the compressor heater of energising along with the reduction of compressor ambient temperature.According to this variation, compare with situation with 2 compressor heaters, can further reduce consumption electric energy to heating near the mechanical seal 15, reduced the temperature and time of the electromagnetic coil 23 that is heated simultaneously, further postpone to be used for the mental state of deterioration of resin of the insulation of electromagnetic coil, thereby can improve the reliability and the durability of electromagnetic coil more.
In addition, in described the 2nd mode of execution and its variation, be provided with a plurality of compressor heaters, but 1 compressor heater also can be set, along with the reduction of compressor ambient temperature, interim ground or increase energising amount continuously to it.Like this,, can reduce heating required consumption electric energy near the mechanical seal, improve the reliability and the durability of electromagnetic coil, and owing to only need 1 compressor heater with aforementioned the same, thus can simplified structure, avoid cost to increase.
Also have, the present invention also can be along with the reduction of compressor ambient temperature, interim ground or increase energising amount to electromagnetic coil 23 continuously.Perhaps electromagnetic coil is divided into a plurality ofly,, increases the quantity of the electromagnetic coil of energising along with the reduction of compressor ambient temperature.Like this owing to reduced heating required consumption electric energy near the mechanical seal 15, thereby also can overcome electromagnetic coil 23 make sealed department ambient temperature rising specified value the time consumption electric energy many problems.
Also have, also can make up a plurality of described each mode of execution and variation during enforcement.
Claims (10)
1. the temperature control method of an open compressor is characterized in that:
At shell by compressor having internally mounted structure portion, with be connected in described compression mechanical part and make its action and can connect described shell with rotating freely, be projected into the outside, via magnetic clutch by the main shaft of prime mover driven, utilize seal arrangement pair described main shaft that is communicated with the pressing chamber of described compression mechanical part and the gap between the described shell to carry out in the open compressor that airtight sealing forms
Compressor ambient temperature around described open compressor is when being lower than the 1st set point of temperature, the compressor heater that is arranged near the described shell the described seal arrangement switched on, and to heating near the described seal arrangement,
When described compressor ambient temperature is lower than than also low the 2nd set point of temperature of described the 1st set point of temperature, electromagnetic coil to described magnetic clutch is also switched on, except described compressor heater, also utilize described electromagnetic coil to heating near the described seal arrangement.
2. the temperature control method of open compressor according to claim 1 is characterized in that:
At least one side in described compressor heater and the electromagnetic coil is provided with a plurality of, and at least one side in the described the 1st and the 2nd set point of temperature also is set with a plurality of, increases the described compressor heater of switching on and the quantity of at least one side in the electromagnetic coil along with the reduction of described compressor ambient temperature.
3. the temperature control method of open compressor according to claim 1 is characterized in that:
Along with the reduction of described compressor ambient temperature, increase energising amount at least one side in described compressor heater and the electromagnetic coil.
4. the temperature control method of open compressor according to claim 1 is characterized in that:
Described the 1st set point of temperature, has the 1st decline side mark fixed temperature, with the 1st uplifted side set point of temperature that is higher than described the 1st decline side mark fixed temperature, when described compressor ambient temperature drops to when being lower than described the 1st decline side mark fixed temperature, described compressor heater is switched on, when described compressor ambient temperature rises to when being higher than described the 1st uplifted side set point of temperature, stop described compressor heater is switched on.
5. the temperature control method of open compressor according to claim 1 is characterized in that:
Described the 2nd set point of temperature, has the 2nd decline side mark fixed temperature, with the 2nd uplifted side set point of temperature that is higher than described the 2nd decline side mark fixed temperature, when described compressor ambient temperature drops to when being lower than described the 2nd decline side mark fixed temperature, described electromagnetic coil is switched on, when described compressor ambient temperature rises to when being higher than described the 2nd uplifted side set point of temperature, stop described electromagnetic coil is switched on.
6. the temperature control apparatus of an open compressor is characterized in that:
At shell by compressor having internally mounted structure portion, with be connected in described compression mechanical part and make its action, simultaneously can connect described shell with rotating freely, be projected into the outside, via magnetic clutch by the main shaft of prime mover driven, utilize seal arrangement pair described main shaft that is communicated with the pressing chamber of described compression mechanical part and the gap between the described shell to carry out in the open compressor that airtight sealing forms
Also have:
Temperature transducer, it detects the compressor ambient temperature around the described open compressor;
The compressor heater, it is arranged near the described shell of described seal arrangement; With
Control mechanism, when this control mechanism is worked as the described compressor ambient temperature that is detected and is lower than the 1st set point of temperature, described compressor heater is switched on, to heating near the described seal arrangement, and when described compressor ambient temperature is lower than than also low the 2nd set point of temperature of described the 1st set point of temperature, electromagnetic coil to described magnetic clutch is also switched on, and except described compressor heater, also utilizes described electromagnetic coil to heating near the described seal arrangement.
7. the temperature control apparatus of open compressor according to claim 6 is characterized in that:
At least one side in described compressor heater and the electromagnetic coil is provided with a plurality of, and at least one side in the described the 1st and the 2nd set point of temperature also is set with a plurality of, described control mechanism, along with the reduction of the described compressor ambient temperature that is detected, and compressor heater that increase is switched on and the quantity of at least one side in the electromagnetic coil.
8. the temperature control apparatus of open compressor according to claim 6 is characterized in that:
Described control mechanism along with the reduction of the described compressor ambient temperature that is detected, increases the energising amount at least one side in described compressor heater and the electromagnetic coil.
9. the temperature control apparatus of open compressor according to claim 6 is characterized in that:
Described the 1st set point of temperature has the 1st decline side mark fixed temperature and is higher than the 1st uplifted side set point of temperature of described the 1st decline side mark fixed temperature,
Described control mechanism, when described compressor ambient temperature drops to when being lower than described the 1st decline side mark fixed temperature, described compressor heater is switched on, when described compressor ambient temperature rises to when being higher than described the 1st uplifted side set point of temperature, stop described compressor heater is switched on.
10. the temperature control apparatus of open compressor according to claim 6 is characterized in that:
Described the 2nd set point of temperature has the 2nd decline side mark fixed temperature and is higher than the 2nd uplifted side set point of temperature of described the 2nd decline side mark fixed temperature,
Described control mechanism, when described compressor ambient temperature drops to when being lower than described the 2nd decline side mark fixed temperature, described electromagnetic coil is switched on,, stop described electromagnetic coil is switched on when described compressor ambient temperature rises to when being higher than described the 2nd uplifted side set point of temperature.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005114019 | 2005-04-11 | ||
| JP2005114019A JP4548189B2 (en) | 2005-04-11 | 2005-04-11 | Temperature control method and apparatus in open type compressor |
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| CN1847653A true CN1847653A (en) | 2006-10-18 |
| CN100447415C CN100447415C (en) | 2008-12-31 |
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|---|---|---|---|
| CNB2006100741926A Active CN100447415C (en) | 2005-04-11 | 2006-04-07 | Method and device for temperature control of open style compressor |
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| Country | Link |
|---|---|
| JP (1) | JP4548189B2 (en) |
| KR (1) | KR100735377B1 (en) |
| CN (1) | CN100447415C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102597659A (en) * | 2009-11-11 | 2012-07-18 | 三菱电机株式会社 | Air conditioner |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3759058A (en) * | 1972-06-30 | 1973-09-18 | Gen Motors Corp | Compressor shaft seal heater |
| JPS54181361U (en) * | 1978-06-13 | 1979-12-21 | ||
| KR960021634A (en) * | 1994-12-27 | 1996-07-18 | 한승준 | Electronic clutch control device of air conditioner compressor |
| KR970011479A (en) * | 1995-08-31 | 1997-03-27 | 배순훈 | Variable clutch for vehicle air conditioner compressor |
| KR970045529A (en) * | 1995-12-29 | 1997-07-26 | 한승준 | Electronic clutch control device of air conditioner compressor |
| CN2282610Y (en) * | 1996-09-11 | 1998-05-27 | 刘淇彬 | Structure of control valve for compressor |
| JPH1127204A (en) * | 1997-07-08 | 1999-01-29 | Furukawa Electric Co Ltd:The | Same optical carrier transmission system of pager signal and cellular telephone signal |
| KR100287718B1 (en) * | 1999-02-23 | 2001-04-16 | 구자홍 | Control method for preheating of compressor in heat pump |
| JP2001073952A (en) * | 1999-09-03 | 2001-03-21 | Yamaha Motor Co Ltd | Heating device for compressor |
| JP3607581B2 (en) * | 2000-07-19 | 2005-01-05 | シャープ株式会社 | Air conditioner |
| JP4181340B2 (en) * | 2002-06-07 | 2008-11-12 | サンデン株式会社 | Compressor protection method and protection structure |
| JP4246976B2 (en) * | 2002-08-28 | 2009-04-02 | サンデン株式会社 | Open type compressor device and air conditioner |
| JP2004204734A (en) * | 2002-12-24 | 2004-07-22 | Calsonic Compressor Seizo Kk | Gas compressor and air conditioning system |
-
2005
- 2005-04-11 JP JP2005114019A patent/JP4548189B2/en active Active
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2006
- 2006-04-07 CN CNB2006100741926A patent/CN100447415C/en active Active
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102597659A (en) * | 2009-11-11 | 2012-07-18 | 三菱电机株式会社 | Air conditioner |
| CN102597659B (en) * | 2009-11-11 | 2015-01-07 | 三菱电机株式会社 | Air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100447415C (en) | 2008-12-31 |
| JP2006291854A (en) | 2006-10-26 |
| KR100735377B1 (en) | 2007-07-04 |
| KR20060107943A (en) | 2006-10-16 |
| JP4548189B2 (en) | 2010-09-22 |
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