CN101153600A - Rotary compressor and heat pump system - Google Patents
Rotary compressor and heat pump system Download PDFInfo
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- CN101153600A CN101153600A CNA2007101532566A CN200710153256A CN101153600A CN 101153600 A CN101153600 A CN 101153600A CN A2007101532566 A CNA2007101532566 A CN A2007101532566A CN 200710153256 A CN200710153256 A CN 200710153256A CN 101153600 A CN101153600 A CN 101153600A
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Abstract
A problem to be solved by the present invention is that the temperature of a refrigerant discharged from a compression section can be detected more exactly without being influenced by variable factors existing around the compression section. In a rotary compressor 1 having a motor 6 and a compression section 3 provided in a closed container 2 , and also having a discharge pipe 26 provided in an upper part of the closed container 2 to discharge a refrigerant compressed by the compression section 3 to the outside of the closed container 2 , a refrigerant discharge part 462 for discharging the refrigerant compressed by the compression section 3 toward the inner peripheral surface of the closed container 2 is provided, and a discharge temperature sensor 20 for detecting the discharge temperature of compressed refrigerant is arranged in a portion opposed to the refrigerant discharge part 462 on the outer peripheral surface side of the closed container 2.
Description
Technical field
The present invention relates to the rotary compressor that in the heat pump of air conditioner or hot-water supply device etc., uses, more particularly, relate to and detect by the temperature that spues of the refrigeration agent of compressing section compresses exactly, effectively utilize the technology of guaranteeing in the reliability of the ability control of heat pump and compressor.
Background technique
If its degree of superheat that sucks refrigeration agent of the compressor that uses in the refrigeration cycle of heat pump is excessive, then have because of the diminish temperature of problem that ability and efficient reduces and compressor integral body of the density that sucks refrigeration agent to uprise the problem that the durability of the coiling of the reliability of compressor, particularly motor and insulating paper reduces.
On the other hand, otherwise not superheat state but moisture state, be the large percentage of liquid if suck refrigeration agent, then the lubricant oil of press part is formed by the liquid refrigerating dilution agent and is insufficient lubrication, if it is big that the ratio of liquid further becomes, then become the liquid compression state, the problem that causes the damage of press part because of the abnormal ascending of pressure is arranged.
Thereby, for the ability of suitably controlling heat pump and the reliability of guaranteeing compressor, need suitably keep the degree of superheat of suction refrigeration agent of state, the particularly compressor of the refrigeration agent in the refrigeration cycle of heat pump.
Here, because the state of the suction refrigeration agent of compressor is if moisture state promptly reaches the two-phase state, no matter then how temperature does not change the size of the ratio of liquid, so the general temperature that detects the refrigeration agent that spues after compressing is that heat insulation process is inferred suction condition according to compression substantially.
So, for example in patent documentation 1 (Japanese Patent Application Publication 2005-147437 number), the temperature transducer that spues is set in the discharge pipe of compressor, in addition, in patent documentation 2 (Japanese Patent Application Publication H07-174417), the temperature transducer that spues is set in the inside of compressor, with the refrigerant temperature that spues of detected compressor as one of information, infer the degree of superheat of the suction refrigeration agent of compressor, for making it become suitable state, the rotating speed of the fan of the amount of restriction of control expansion valve, rotating speed, condenser or the vaporizer of compressor.
But,, in the temperature transducer that will spue is located at form in the discharge pipe on compressor top, following problem is arranged as patent documentation 1.
That is, the press part of general closed rotary compressor is configured in the bottom of seal container, and the refrigeration agent that will spue from press part is via outside spuing seal container from the discharge pipe on top around the motor that is configured in the top in the seal container thus.
Thereby, possess simultaneously from press part and spue discharge pipe with the heat absorption of the lost heat of motor and the reason that temperature rises and by from the peripherad heat radiation of compressor and the reason that temperature reduces, the temperature generation difference after detected temperature of the discharge pipe on compressor top and press part have just spued.
Moreover, in the transition state when starting etc., because of the difference of the thermal capacity of the motor temperature after the detected temperature of the discharge pipe on compressor top and press part have just spued becomes big, for the temperature accurately that detects after the press part that needs for the degree of superheat of inferring the suction refrigeration agent has just spued is inadequate, need improve it.
In addition, in the temperature transducer that will spue is arranged on form in the compressor inside,, withstand voltage relaying terminal need be set on the seal container of compressor for the signal of temperature transducer that this is spued is fetched into the outside as patent documentation 2, cost rises, so it need be improved.
And then, among refrigeration cycle, in gas blowing circulation, also need suitably to keep the degree of superheat or the degree of dryness of compressor suction condition for being drawn into ejector refrigeration agent in the compressor.
Owing to the ejector refrigeration agent generally is not inhaled in the compressor via storage, so, need detect the temperature that spues of compressor more accurately for the degree of superheat or the degree of dryness of the compressor suction condition that suitably keeps the ejector refrigeration agent.
Summary of the invention
Thereby, the problem that the present invention will solve is to take in seal container in the rotary compressor of motor and press part, can be present in press part around the change reason influence and detect the temperature of the refrigeration agent that spues from press part more accurately, suitably control the ability of heat pump thus and guarantee the reliability of compressor.
In order to solve above-mentioned problem, the present invention is a kind of top of the seal container cylindraceous inside in vertical configuration form of having motor, have press part in the bottom, will being spued to the outside from the discharge pipe of the upper end portion of seal container after by the inside of seal container by the refrigeration agent of compressing section compresses, the closed rotary compressor of so-called internal high pressure form, it is characterized in that having at the upside of press part and be used for the anechoic chamber that the pressure pulsation of the refrigeration agent that will spue from press part reduces; For noise reduction in above-mentioned seal container that refrigeration agent is spued from above-mentioned anechoic chamber spue the hole near the temperature of detection compressed refrigerant, noise reduction spues near the height that the hole was positioned on the outer circumferential face of above-mentioned seal container above-mentioned, is provided with the temperature transducer that spues of the temperature that detects compressed refrigerant.
As preferred technological scheme of the present invention, it is characterized in that, last noise reduction lid have substantially horizontal end plate portion, vertical direction side plate and on the above-mentioned side plate on above-mentioned seal container inner peripheral surface opening the noise reduction hole that spues; With above-mentioned on noise reduction spue and be provided with the temperature transducer that spues of the temperature that detects compressed refrigerant on the outer circumferential face of the opposed seal container in hole.
It is characterized in that, last noise reduction lid have substantially horizontal end plate portion, vertical direction side plate and on the above-mentioned side plate as on spue hole and of noise reduction towards the portion of having cut of above-mentioned seal container inner peripheral surface opening; With above-mentioned on noise reduction spue and be provided with the temperature transducer that spues of the temperature that detects compressed refrigerant on the outer circumferential face of the opposed seal container in hole.
It is characterized in that, have be fixed on above-mentionedly go up that noise reduction covers, an end to above-mentioned go up anechoic chamber's inner opening and the other end as the last noise reduction last hush pipe of hole that spue towards above-mentioned seal container inner peripheral surface opening; With above-mentioned on noise reduction spue and be provided with the temperature transducer that spues of the temperature that detects compressed refrigerant on the outer circumferential face of the opposed seal container in hole.
It is characterized in that, above-mentioned go up side plate that the noise reduction lid has end plate portion, the vertical direction of substantially horizontal, the extension of the inner peripheral surface that approaches above-mentioned seal container on the above-mentioned side plate and on the above-mentioned extension on above-mentioned seal container inner peripheral surface opening the noise reduction hole that spues; With above-mentioned on noise reduction spue and be provided with the temperature transducer that spues of the temperature that detects compressed refrigerant on the outer circumferential face of the opposed seal container in hole.
It is characterized in that, have on the end plate of above-mentioned upper bearing (metal) an end on above-mentioned anechoic chamber's inner opening and the other end as on the noise reduction hole path that in the bearing end plate of above-mentioned seal container inner peripheral surface opening, spues that spues; With above-mentioned on noise reduction spue and be provided with the temperature transducer that spues of the temperature that detects compressed refrigerant on the outer circumferential face of the opposed seal container in hole.
On the other hand, preferably to be applied in rotating speed be in the variable rotary compressor in the present invention.
Preferably be applied in the following two stage compression rotary compressor: above-mentioned press part has the rudimentary side press part that is configured in downside, the senior side press part that is configured in upside, be connected with the suction side of above-mentioned senior side press part by the exhaust end of middle connecting path above-mentioned rudimentary side press part, constitute two stage compression portion thus, and have the low pressure suction pipe of the suction side that is connected to above-mentioned rudimentary side press part and press suction pipe via the centre that above-mentioned middle connecting path is connected to the suction side of above-mentioned senior side press part.
And then, in the present invention,, comprise following any technological scheme as the heat pump that uses rotary compressor of the present invention.That is,
This heat pump, possess refrigeration cycle that compressor, condenser, expansion mechanism, vaporizer are connected with pipe arrangement successively and the temperature that detects a plurality of positions of above-mentioned refrigeration cycle and control the control gear of the amount of restriction of the rotating speed of above-mentioned compressor and above-mentioned expansion mechanism, it is characterized in that, as above-mentioned compressor, each described rotary compressor in the operation technique scheme 1～7; The detected temperatures of the temperature transducer that spues on the outer circumferential face of the seal container by being located at above-mentioned compressor is controlled the rotating speed of the amount of restriction and the above-mentioned compressor of above-mentioned expansion mechanism, suitably keeps being drawn into the degree of superheat of the refrigeration agent in the above-mentioned compressor.
This heat pump is a gas blowing circuit heat pump, possess compressor, condenser, basic circulation expansion mechanism, the basic refrigeration cycle that vaporizer connects with pipe arrangement successively, and possess the part of the high-pressure refrigerant behind the above-mentioned condensator outlet as the branched pipe of ejector refrigeration agent from above-mentioned basic refrigeration cycle branch, make the injection expansion mechanism of above-mentioned ejector refrigeration agent decompression for the intermediate pressure of the pressure of the pressure of above-mentioned condenser and above-mentioned vaporizer, inner heat exchanger with the high-pressure refrigerant heat exchange of the above-mentioned basic refrigeration cycle after post-decompression above-mentioned ejector refrigeration agent and the branch, the injection pipe arrangement that above-mentioned ejector refrigeration agent after the above-mentioned heat exchange is sucked in the compression of above-mentioned compressor midway, control the rotating speed of above-mentioned compressor with the temperature at a plurality of positions of detecting above-mentioned refrigeration cycle, the control gear that above-mentioned basic circulation is used the amount of restriction of expansion mechanism with the amount of restriction and the above-mentioned injection of expansion mechanism, it is characterized in that, as above-mentioned compressor, operation technique scheme 8 described rotary compressors, the discharge pipe of above-mentioned compressor is connected with above-mentioned condenser, the low pressure suction pipe of above-mentioned compressor is connected with above-mentioned vaporizer, will presses suction pipe to be connected in the middle of the above-mentioned compressor with above-mentioned injection pipe arrangement; The detected temperatures of the temperature transducer that spues on the outer circumferential face of the seal container by being located at above-mentioned compressor, control above-mentioned the injection amount of restriction of expansion mechanism and the rotating speed of above-mentioned compressor, suitably keep being drawn into the middle degree of superheat or the degree of dryness of pressing the refrigeration agent in the suction pipe of above-mentioned compressor.
This heat pump is a gas blowing circuit heat pump, with compressor, condenser, the 1st expansion mechanism, the intermediate pressure gas liquid/gas separator, the 2nd expansion mechanism, vaporizer constitutes basic refrigeration cycle with the pipe arrangement connection successively, and possesses the injection pipe arrangement that the gas refrigerant of above-mentioned intermediate pressure gas liquid/gas separator is sucked from basic refrigeration cycle branch and in the compression of above-mentioned compressor as the ejector refrigeration agent midway, control the rotating speed of above-mentioned compressor with the temperature at a plurality of positions of detecting above-mentioned refrigeration cycle, the control gear of the amount of restriction of the amount of restriction of above-mentioned the 1st expansion mechanism and above-mentioned the 2nd expansion mechanism, it is characterized in that, as above-mentioned compressor, operation technique scheme 7 described rotary compressors, the discharge pipe of above-mentioned compressor is connected with above-mentioned condenser, the low pressure suction pipe of above-mentioned compressor is connected with above-mentioned vaporizer, will presses suction pipe to be connected in the middle of the above-mentioned compressor with above-mentioned injection pipe arrangement; The detected temperatures of the temperature transducer that spues on the outer circumferential face of the seal container by being located at above-mentioned compressor, control the amount of restriction of the amount of restriction of above-mentioned the 1st expansion mechanism, above-mentioned 2 expansion mechanisms and the rotating speed of above-mentioned compressor, suitably keep being drawn into the middle degree of superheat or the degree of dryness of pressing the refrigeration agent in the suction pipe of above-mentioned compressor.
According to the present invention, in seal container, take in the rotary compressor of motor and press part, can be present in press part around motor etc. the change reason influence and detect the temperature of the refrigeration agent that spues from press part more accurately.
Thus, can infer more accurately that the state that is drawn into the refrigeration agent in the compressor is the degree of superheat or degree of dryness, can realize that the ability of heat pump is controlled and the reliability of compressor is guaranteed with low cost.
In addition, in the rotating speed changeable type compressor, requiring ability less and under the situation that rotating speed is less as heat pump, promptly under the less situation of circulating mass of refrigerant, from press part just spued the back till the discharge pipe on compressor top around the temperature variation brought of influence become big, so that effect of the present invention becomes is big.
And then, according to the present invention, in the gas blowing circulation, can suitably guarantee to be drawn into the degree of superheat or the degree of dryness of the ejector refrigeration agent in the compressor.
Description of drawings
Fig. 1 a is the whole sectional view of the rotary compressor of the 1st mode of execution of the present invention.
Fig. 1 b is the sectional elevation of press part of the rotary compressor of the 1st mode of execution of the present invention.
Fig. 1 c is the structural drawing of the refrigeration cycle of the 1st mode of execution of the present invention.
Fig. 2 is the partial sectional view of bottom of the rotary compressor of the 2nd mode of execution of the present invention.
Fig. 3 a is the stereogram that the last noise reduction of the rotary compressor of the 3rd mode of execution of the present invention is covered.
Fig. 3 b is the partial sectional view of bottom of the rotary compressor of the 3rd mode of execution of the present invention.
Fig. 4 is the partial sectional view of bottom of the rotary compressor of the 4th mode of execution of the present invention.
Fig. 5 a is the stereogram that the last noise reduction of the rotary compressor of the 5th mode of execution of the present invention is covered.
Fig. 5 b is the partial sectional view of bottom of the rotary compressor of the 5th mode of execution of the present invention.
Fig. 6 is the partial sectional view of bottom of the rotary compressor of the 6th mode of execution of the present invention.
Fig. 7 a is the whole sectional view of the rotary compressor of the 7th mode of execution of the present invention.
Fig. 7 b is the structural drawing of the refrigeration cycle of the 7th mode of execution of the present invention.
Fig. 8 is the structural drawing of the refrigeration cycle of the 8th mode of execution of the present invention.
Embodiment
At first, utilize Fig. 1 a to Fig. 1 c that the 1st mode of execution of the present invention is described.Fig. 1 a is the whole sectional view of the rotary compressor of the 1st mode of execution, and Fig. 1 b is the sectional elevation of press part of the rotary compressor of the 1st mode of execution, and Fig. 1 c is the structural drawing of the refrigeration cycle of the 1st mode of execution.
As shown in Figure 1a, rotary compressor 1 vertically disposes seal container 2 cylindraceous, and the top in seal container possesses motor 6, possesses press part 3 in the bottom.In this embodiment, press part 3 is the rotary compressors with twin-tub type of the 1st press part 3A and the 2nd press part 3B.
Be provided with in the upper end portion of seal container 2 and be used for the spue discharge pipe 26 of seal container outside of the refrigeration agent the seal container inside that spues from press part 3.Stator 61 hot chargings of motor 6 are on seal container 2, and rotor 62 hot chargings of motor 6 are fixed on the axle 31 that motor 6 and press part 3 mechanically are connected.
Shown in Fig. 1 b, press part 3 has 32 and be accommodated in piston cylindraceous 33 in the inside of cylinder thorax cylindraceous (シ リ Application ダ ボ ア) 321 of the inboard that is formed at cylinder 32, is formed with the operating chamber 11 of refrigeration agent between the outer circumferential face of the inner peripheral surface of cylinder thorax 321 and piston 33.On cylinder 32, be provided with wing groove 322 from cylinder thorax 321 towards peripheral direction, in wing groove 322, have the flat wing 34.
Between the inner peripheral surface of the wing 34 and seal container 2, be provided with spring 38, make the outer circumferential face sliding contact of the end and the piston 33 of the wing 34, operating chamber 11 is divided into suction chamber 111 and pressing chamber 112 by the application of force by spring 38.
In press part 3, the 1st press part 3A of upside and the 2nd press part 3B of downside are 180 ° of the phase differences mutually of piston 33, and basic structure is identical.Then, utilize Fig. 1 a once more, carry out the explanation of compressor integral body.
At the upside of upper bearing (metal) 36 and the downside of lower bearing, have last noise reduction lid 46, noise reduction lid 47 down respectively, be formed be used for reducing spue refrigeration agent pressure pulsation last anechoic chamber 56 and under anechoic chamber 57.
Last noise reduction lid 46, upper bearing (metal) the 36, the 1st cylinder 32A, intermediate clapboard the 35, the 2nd cylinder 32B, lower bearing 37, following noise reduction lid 47 are fixed integratedly by bolt (not shown), and the peripheral part of upper bearing (metal) end plate portion 361 is fixed on the seal container 2 by spot welding.
Upper bearing (metal) 36 and lower bearing 37 have bearing portion 362,372 respectively, rotate supporting axle 31 freely on it by axle 31 is embedded in.
Axle 31 has to two crank portion 311a, 311b differing 180 ° direction off-centre, and two crank portion are chimeric in the piston separately 33 of the 1st press part 3A and the 2nd press part 3B.
Along with the rotation of axle 31, Yi Bian piston 33 sliding contacts on one side rotatablely move on each cylinder thorax 321 inwalls, the wing 34 follows it and to-and-fro motion, and the volume of each suction chamber 111 and pressing chamber 112 changes continuously thus.
The suction chamber 111 of the 1st press part 3A is connected on the low pressure suction pipe 71 via the inlet hole 323A that is located on the 1st cylinder 32A, and the pressing chamber 112 of the 1st press part 3A is communicated to anechoic chamber 56 via being located at press part in the upper bearing (metal) end plate portion 361 hole 363 that spues.
More particularly, low pressure suction pipe 71 is connected to inlet hole 323A via suction connection 27, and is provided with safety check 364 on press part spues hole 363.
Suction chamber 111 as the suction side of the 2nd press part 3B is connected on the low pressure suction pipe 71 via the inlet hole 323B that is located on the 2nd cylinder 32B, and the pressing chamber 112 of the 2nd press part 3B is communicated to down anechoic chamber 52 via being located at press part on the lower bearing hole 373 that spues.
More particularly, low pressure suction pipe 71 is connected to inlet hole 323B via suction connection 27, and is provided with safety check 374 on press part spues hole 373.
In addition, on safety check 364,374, set up valve guard 364a, 374a, in Fig. 1 a, safety check 364,374 is to be connected to the state representation on valve guard 364a, the 374a respectively.
In the end plate portion 371 of the 361, the 1st cylinder 32A of end plate portion, intermediate clapboard the 35, the 2nd cylinder 32B of upper bearing (metal), lower bearing, be provided with and they are connected and connect and will go up anechoic chamber's intercommunicating pore (not shown) of anechoic chamber 56 and 57 connections of following anechoic chamber.
In addition, on last noise reduction lid 46, be provided with last noise reduction to the inside opening of seal container 2 hole 462 that spues, noise reduction spues and the temperature transducer 20 that spues is installed near the outer circumferential face of the seal container 2 the height in hole 462 on this.
In the side of compressor 1, has the storage 7 that constitutes by seal container independently.Have the storage inlet duct 72 that is connected with the low voltage side of refrigeration cycle on the top of storage 7,, have two low pressure suction pipes 71 that the inside with storage 7 is connected with the suction chamber 111 of the 1st press part 3A, the 2nd press part 3B in the bottom of storage 7.
Then, flowing of refrigeration agent in the compressor of above structure is described.From the low voltage side (vaporizer side) of refrigeration cycle via storage inlet duct 72 flow in the storage 7 refrigeration agent by piston 33 rotatablely move, the volume of suction chamber 111 enlarges, be inhaled into via low pressure suction pipe 71 among the 1st press part 3A, the 2nd press part 3B suction chamber 111 separately of compressor 1.
After rotating a circle, suction chamber 111 becomes the position that disconnects with suction port 323, by switch to pressing chamber 112 under this state, refrigeration agent is compressed.
If reaching, compressed refrigeration agent pressure is located at the spue pressure inside of seal container 2 in the outside of the safety check 364,374 on the hole 363,373 of press part, then as shown in Figure 1a, safety check 364,374 opens wide, in spued respectively last anechoic chamber 56 and the following anechoic chamber 57.
After in anechoic chamber 57 down, having been reduced pressure pulsation by the refrigeration agent in the following anechoic chamber 57 of being spued, flow in the anechoic chamber 56 via noise reduction intercommunicating pore (not shown), with the refrigeration agent interflow that spues from the 1st press part 3A as the reason of noise.
Refrigeration agent behind the interflow has reduced pressure pulsation as the reason of noise in last anechoic chamber 56 after, spued the inside of seal container 2 by the hole 462 that spues from last noise reduction.
And then, the gap of the notch (not shown) of the stator core 612 by motor 6, stator core 612 and coiling 611, stator 61 and the gap of rotor 62 are guided the top of motor 6, are spued to the high pressure side of refrigeration cycle (condenser side) by discharge pipe 26.
Like this, spued in the inside of seal containers 2 by 56 backs, last anechoic chamber by the 1st press part 3A, the 2nd press part 3B refrigerant compressed, and around by motor 6 back by the outside of the seal container 2 that spues from discharge pipe 26.
Shown in Fig. 1 c, refrigeration cycle connects compressor 1, condenser 91, basic circulation successively with expansion mechanism 93, vaporizer 92 and constitutes with pipe arrangement 99.In addition, in Fig. 1 c, Ta is the temperature transducer of refrigerant temperature that detects the outlet side of condenser 91, Tb is the temperature transducer that detects the refrigerant temperature in the neutral position in the condenser 91, Tc is the temperature transducer that detects the refrigerant temperature in the neutral position in the vaporizer 92, and Td detects the sensor that sucks refrigerant temperature.
Gas refrigerant heat release with air heat exchange condenser 91 of the High Temperature High Pressure that spues from compressor 1 becomes the supercooling state.The refrigeration agent of supercooling state is become the two-phase state of low-temp low-pressure with expansion mechanism 93 decompressions by basic circulation.The refrigeration agent of the two-phase state of low-temp low-pressure in vaporizer 92 with air heat exchange endothermic gasification, promptly become state with degree of superheat, be inhaled in the compressor 1.
Under situation about vaporizer 92 being configured in the indoor set, indoor air is cooled, so become refrigerator, under situation about condenser 91 being configured in the indoor set, indoor air is heated, so become the system warming-up.Though not expression if append pipe arrangement and the switching valve that is used for switching vaporizer and condenser, then becomes the dual-purpose machine of cooling/heating in Fig. 1 c.In addition, if the hydrothermal exchange that condenser 91 and hot water supply are used then becomes hot-water supply device.
In addition, in the heat pump of this mode of execution, possess and be used for the state of the refrigeration agent of refrigeration cycle is remained the control gear 97 of suitable state.
Here, in the present invention, by with the inside of the seal container 2 of compressor 1 in compressed refrigeration agent through motor 6 around before on the outer circumferential face of the opposed seal container of part that contact with seal container 2, the installation temperature transducer 20 that spues, can substantially directly detect with motor 6 heat exchanges before, be the refrigerant temperature after press part has just spued, so can be according to the basic circulation of this detected temperatures control with the amount of restriction of expansion mechanism 93, the rotating speed of compressor 1, more suitably keep the degree of superheat of refrigeration agent of the low pressure suction pipe 71 of compressor 1.
In addition, in the rotating speed changeable type compressor, requiring ability less and under the situation that rotating speed is less, promptly under the less situation of circulating mass of refrigerant as heat pump, owing to become big, so that effect of the present invention becomes is big from the press part temperature variation that the influence of back around till the discharge pipe 26 on the top of seal container 2 bring that just spued.
Then, utilize Fig. 2 that the 2nd mode of execution of the present invention is described.Fig. 2 is the partial sectional view of bottom of the rotary compressor of expression the 2nd mode of execution, gives identical reference character and omits its detailed explanation for the structural element identical with Fig. 1 a of above-mentioned the 1st mode of execution of expression.In addition, refrigeration cycle is identical with the refrigeration cycle of the 1st mode of execution shown in Fig. 1 c.
As shown in Figure 2, last noise reduction lid 46 has end plate portion 463 and side plate 464, being provided with the noise reduction hole 462 that spues on the side plate 464, will be directly injected on the inner peripheral surface of seal container 2 from the refrigeration agent that last anechoic chamber 56 spues.And then, on the outer circumferential face of the seal container 2 of the part that is opposite to injection, the temperature transducer 20 that spues is installed.
Thus, can make the difference of the refrigerant temperature after the seal container temperature of the part that the temperature transducer 20 that spues has been installed and press part have just spued become littler, so can precision suitably keep sucking the degree of superheat of refrigeration agent better with respect to the 1st mode of execution.
Then, utilize Fig. 3 a, Fig. 3 b that the 3rd mode of execution of the present invention is described.Fig. 3 a is the stereogram that the last noise reduction of the rotary compressor of expression the 3rd mode of execution is covered, Fig. 3 b is the partial sectional view of bottom of the rotary compressor of expression the 3rd mode of execution, gives identical reference character and omits its detailed explanation for the structural element identical with Fig. 1 a of above-mentioned the 1st mode of execution of expression.In addition, refrigeration cycle is identical with the refrigeration cycle of the 1st mode of execution shown in Fig. 1 a.
Shown in Fig. 3 a, in the 3rd mode of execution, in the end plate portion 463 of last noise reduction lid 46, be provided with the portion of having cut 465 that can carry out punch process simultaneously with last noise reduction lid integral body.
Shown in Fig. 3 b, with the above-mentioned portion 465 of having cut as spue hole 462 and, will being directly injected on the inner peripheral surface of seal container of last noise reduction from the refrigeration agent that last anechoic chamber 56 spues towards the inner peripheral surface opening of seal container 2.And then, on the outer circumferential face of the seal container 2 of the part that is opposite to injection, the temperature transducer 20 that spues is installed.
Thus, can on the side plate 46 of last noise reduction lid 464, not carry out other processing and form on seal container inner peripheral surface opening the noise reduction hole 462 that spues with respect to the 2nd mode of execution, can suitably keep sucking the degree of superheat of refrigeration agent accurately with lower cost.
Then, utilize Fig. 4 that the 4th mode of execution of the present invention is described.Fig. 4 is the partial sectional view of bottom of the rotary compressor of expression the 4th mode of execution, gives identical reference character and omits its detailed explanation for the structural element identical with Fig. 1 a of above-mentioned the 1st mode of execution of expression.In addition, refrigeration cycle is identical with the refrigeration cycle of the 1st mode of execution shown in Fig. 1 a.
As shown in Figure 4, in the 4th mode of execution, in the end plate portion 463 of last noise reduction lid 46, be fixed with make progress anechoic chamber's 56 openings, the other end of an end and spue hole 462 towards the last hush pipe 466 of the L word shape of the inner peripheral surface opening of seal container 2, will be directly injected on the inner peripheral surface of seal container 2 from the refrigeration agent that last anechoic chamber 56 spues as last noise reduction.And then, on the outer circumferential face of the seal container 2 of the part that is opposite to injection, the temperature transducer 20 that spues is installed.
Thus, can make the noise reduction hole 462 that spues approach the inner peripheral surface of seal container 2 and opening, can more suitably keep sucking the degree of superheat of refrigeration agent with respect to above-mentioned the 2nd, 3 mode of executions.
Then, utilize Fig. 5 a, Fig. 5 b that the 5th mode of execution of the present invention is described.Fig. 5 a is the stereogram that the last noise reduction of the rotary compressor of expression the 5th mode of execution is covered, Fig. 5 b is the partial sectional view of bottom of the rotary compressor of expression the 5th mode of execution, gives identical reference character and omits its detailed explanation for the structural element identical with Fig. 1 a of above-mentioned the 1st mode of execution of expression.In addition, refrigeration cycle is identical with the refrigeration cycle of the 1st mode of execution shown in Fig. 1 a.
Shown in Fig. 5 a, in the 5th mode of execution, the part that the side plate 464 that makes noise reduction lid 46 is set approaches the extension 467 of the inner peripheral surface of seal container 2, and is provided with opening portion 468 on this extension 467.
Shown in Fig. 5 b, the opening portion 468 of above-mentioned extension as the hole 462 that spues of the last noise reduction towards the inner peripheral surface opening of seal container 2, will be directly injected on the inner peripheral surface of seal container 2 from the refrigeration agent that last anechoic chamber 56 spues.And then, on the outer circumferential face of the seal container 2 of the part that is opposite to injection, the temperature transducer 20 that spues is installed.
Thus, with respect to above-mentioned the 4th mode of execution can form the inner peripheral surface that approaches seal container 2 on the last noise reduction lid 46 pipe of split not being installed and opening on the noise reduction hole 462 that spues, can suitably keep sucking the degree of superheat of refrigeration agent with lower cost accurately.
Then, utilize Fig. 6 that the 6th mode of execution of the present invention is described.Fig. 6 is the partial sectional view of bottom of the rotary compressor of expression the 6th mode of execution, gives identical reference character and omits its detailed explanation for the structural element identical with Fig. 1 a of above-mentioned the 1st mode of execution of expression.In addition, refrigeration cycle is identical with the refrigeration cycle of the 1st mode of execution shown in Fig. 1 a.
As shown in Figure 6, in the 6th mode of execution, be provided with in the end plate portion 361 of upper bearing (metal) an end make progress anechoic chamber's 56 openings, the other end as on noise reduction spue hole 462 towards the bearing end plate of the inner peripheral surface opening of seal container 2 path 365 that spues, will be directly injected on the inner peripheral surface of seal container 2 from the refrigeration agent that last anechoic chamber 56 spues.And then, on the outer circumferential face of the seal container 2 of the part that is opposite to injection, the temperature transducer 20 that spues is installed.
Thus, can be not be provided with on the main body of last noise reduction lid 46 that noise reduction spues hole 462 and the inner peripheral surface opening that approaches seal container 2, can suitably keep sucking the degree of superheat of refrigeration agent accurately.
Here, the compressor of the 1st to the 6th mode of execution is the twin-tub type rotary compressor that possesses two press parts, but the present invention is not limited to this, also can be applied to press part and is in 1 the single cylinder type rotary compressor.
Then, utilize Fig. 7 a and Fig. 7 b that the 7th mode of execution of the present invention is described.Fig. 7 a is the whole sectional view of the rotary compressor of expression the 7th mode of execution, and Fig. 7 b is the structural drawing of the refrigeration cycle of the 7th mode of execution.In Fig. 7 a, give identical reference character and omit its detailed explanation for the structural element identical with Fig. 1 a of above-mentioned the 1st mode of execution of expression.
Shown in Fig. 7 a, the compressor 1 of the 7th mode of execution is the rotary compressor that possesses two press parts with the compressor of the 1st mode of execution equally, and different places is described here.
The compressor of the 1st mode of execution connects the stream of two press parts with respect to refrigeration agent in parallel, and the compressor 1 of the 7th mode of execution is by being connected the exhaust end of rudimentary side press part 3L and the suction side of senior side press part 3H by intermediate connection tube 82, with respect to the stream of refrigeration agent two press part 3L, 3H is connected in series.
The suction side of rudimentary side press part 3L is connected to storage 7 via low pressure suction pipe 71.Thus, in the middle of by rudimentary side press part 3L boil down to, press the back to be inhaled among the senior side press part 3H by the low pressure refrigerant that storage 7 is inhaled among the rudimentary side press part 3L, be compressed to high pressure from the centre by senior side press part 3H by intermediate connection tube 82.
And then compressor 1 is drawn into low pressure refrigerant the low pressure suction pipe 71 among the rudimentary side press part 3L except being used for, also possess be connected with injection pipe arrangement 991 described later and be used for the ejector refrigeration agent that press the centre suck in the middle of press suction pipe 81.
Middle intermediate connection tube 82 connections of pressing suction pipe 81 to be connected with suction side with the exhaust end of rudimentary side press part 3L and senior side press part 3H.Thus, ejector refrigeration agent bypass is crossed rudimentary side press part 3L and is inhaled among the senior side press part 3H.
In addition, in this two stage compression rotary compressor 1, spued in the inside of seal container 2 by last anechoic chamber 56 by senior side press part 3H refrigerant compressed, and around by motor 6 back by the outside of the seal container 2 that spues from discharge pipe 26.
Last noise reduction spues hole 462 towards the inner peripheral surface opening of seal container 2, and the refrigeration agent that will spue from last anechoic chamber 56 is towards the inner peripheral surface direct injection of seal container 2.And then, with the outer circumferential face of the opposed seal container 2 of part that sprays on the temperature transducer 20 that spues is installed.
As the form of last noise reduction lid 46, made the form identical, but also can be and the the 1st to the 4th or the 6th identical form of mode of execution with the 5th mode of execution.
Shown in Fig. 7 b, the refrigeration cycle of the 7th mode of execution is that compressor 1, condenser 91, basic circulation are constituted basic circulation with pipe arrangement 99 connections successively with expansion mechanism 93, vaporizer 92.In addition, in this circulates substantially, except each the temperature transducer Ta～Td that in Fig. 1 c, illustrates, also be provided with the temperature transducer Te of the temperature that detects the ejector refrigeration agent and detect the temperature transducer Tf of refrigerant temperature of the outlet side of inner heat exchanger 95.
This basic circuit effect is identical with the refrigeration cycle of the 1st mode of execution, so the effect of following gas blowing to relevant this 7th mode of execution describes.
By the branched pipe after the outlet of condenser 91 96 with the refrigeration agent of a part as the ejector refrigeration agent from basic loop branches, and by spraying with expansion mechanism 94 decompressions.Basic circuit refrigeration agent after post-decompression ejector refrigeration agent and the branch is passed through inner heat exchanger 95 heat exchanges.
Made enthalpy become big ejector refrigeration agent is injected in the middle pressure suction pipe 81 of compressor 1 by injection pipe arrangement 991 by inner heat exchanger 95 heat exchanges.Here, it is liquid spraying with the amount of restriction of expansion mechanism 94, the ejector refrigeration agent is gasified totally make a part by control, compressor 1 cooling is improved the compression efficiency of compressor.
On the other hand, basic circuit refrigeration agent diminishes enthalpy by the heat exchange of inner heat exchanger 95, and then in vaporizer 92, making enthalpy become big with expansion mechanism 93 decompression back by basic circulation, the storage 7 by compressor 1 is inhaled in the low pressure suction pipe 71.
In the circulation that possesses this gas blowing, with shown in the 1st mode of execution do not carry out gas blowing the time circulation compare, in condenser 91, the heat release ability is increased by the increase of refrigerant cycle flow, and the enthalpy of the refrigeration agent by evaporator inlet in vaporizer 92 diminishes heat absorbing property is increased, and improves as the ability of refrigeration cycle.
Here, under situation about vaporizer 92 being configured in the indoor set, indoor air is cooled, so become refrigerator, under situation about condenser 91 being configured in the indoor set, indoor air is heated, so become the system warming-up.Though not expression in Fig. 7 b if compressor 1, inner heat exchanger 95 and basic circulation are appended pipe arrangement and the switching valve that is used for switching vaporizer and condenser with expansion mechanism 93, then becomes the dual-purpose machine of cooling/heating.In addition, if the hydrothermal exchange that condenser 91 and hot water supply are used then becomes hot-water supply device.
In addition, in the heat pump of present embodiment, possess and be used for the state of the refrigeration agent of refrigeration cycle is remained the control gear 97 of suitable state.
Here, in the present invention, by with the inside of the seal container 2 of compressor 1 in compressed refrigeration agent through motor 6 around before on the outer circumferential face of the opposed seal container 2 of part that contacts with seal container 2, the installation temperature transducer 20 that spues, can substantially directly detect with motor 6 heat exchanges before, it is the refrigerant temperature after senior side press part 3H has just spued, so can be according to the amount of restriction of the basic circulation of this detected temperatures control with expansion mechanism 93, spray amount of restriction with expansion mechanism 94, and the rotating speed of compressor 1, more suitably keep being drawn into the degree of dryness or the degree of superheat of the refrigeration agent among the senior side press part 3H of compressor 1.
Then, utilize Fig. 8 that the 8th mode of execution of the present invention is described.Fig. 8 is the structural drawing of the refrigeration cycle of the 8th mode of execution.In addition, compressor is identical with the compressor of the 7th mode of execution shown in Fig. 7 a.
As shown in Figure 8, the refrigeration cycle of the 8th mode of execution is that compressor 1, condenser the 91, the 1st expansion mechanism 931, intermediate pressure gas liquid/gas separator the 98, the 2nd expansion mechanism 932, vaporizer 92 are connected and the basic circulation of formation with pipe arrangement 99 successively.In addition, in Fig. 8, Tg is the temperature transducer of refrigerant temperature that detects the downstream side of the 1st expansion mechanism 931.
This basic circuit effect is identical with the refrigeration cycle of the 1st mode of execution, so the effect of following gas blowing to relevant this 8th mode of execution describes.
Reduce pressure intermediate pressure and the refrigeration agent that becomes the two-phase state is separated into gas refrigerant and liquid refrigerant by intermediate pressure gas liquid/gas separator 98 by the 1st expansion mechanism 931, gas refrigerant as the ejector refrigeration agent by spray pipe arrangement 991 be injected into compressor 1 in the middle of press in the suction pipe 81.
Here, open wide appropriate amount, liquid refrigerant is blended in the part of ejector refrigeration agent,, the compression efficiency of compressor is improved compressor 1 cooling by spraying with fluid flow control mechanism 942.
On the other hand, the liquid refrigerant of intermediate pressure gas liquid/gas separator 98 is made enthalpy become big in vaporizer 92 by the 2nd expansion mechanism 932 decompression back, and the storage 7 by compressor 1 is inhaled in the low pressure suction pipe 71.
In this gas blowing circulation, same with the internal heat exchange formula, circulation when not carrying out gas blowing is compared, increase and the increase of heat release ability by refrigerant cycle flow in condenser 91, and the enthalpy by the refrigeration agent of evaporator inlet in vaporizer 92 diminishes heat absorbing property is increased, and improves as the ability of refrigeration cycle.
Here, under situation about vaporizer 92 being configured in the indoor set, indoor air is cooled, so become refrigerator, under situation about condenser 91 being configured in the indoor set, indoor air is heated, so become the system warming-up.Though not expression if append pipe arrangement and the switching valve that is used for switching vaporizer and condenser, then becomes the dual-purpose machine of cooling/heating in Fig. 8.In addition, if the hydrothermal exchange that condenser 91 and hot water supply are used then becomes hot-water supply device.
In addition, in the heat pump of present embodiment, possess and be used for the state of the refrigeration agent of refrigeration cycle is remained the control gear 97 of suitable state.
Here, in the present invention, compressor 1 is identical with the compressor of the 7th mode of execution, by with through motor 6 around before the outer circumferential face of the opposed seal container 2 of part that contacts with seal container 2 of refrigeration agent on, the installation temperature transducer 20 that spues, can substantially directly detect with motor 6 heat exchanges before, it is the refrigerant temperature after senior side press part 3H has just spued, so can control the amount of restriction of the 1st expansion mechanism 931 according to this detected temperatures, the amount of restriction of the 2nd expansion mechanism 932, gas jet refrigerant flow control mechanism 941, the rotating speed of atomizing of liquids refrigerant flow control mechanism 942 and compressor 1 more suitably keeps being drawn into the degree of dryness or the degree of superheat of the refrigeration agent among the senior side press part 3H of compressor.
Claims (11)
1. rotary compressor,
Have seal container cylindraceous with vertical configuration,
Top in above-mentioned seal container have motor,
Bottom in above-mentioned seal container has the epitrochanterian shaft-driven press part that is fixed on above-mentioned motor;
And then, as above-mentioned press part, have:
Cylinder possesses pressing chamber in inside;
Upper bearing (metal) and lower bearing possess and are fixed on the above-mentioned cylinder and with the end plate portion of the end face sealing of above-mentioned pressing chamber, and possess the bearing portion that above-mentioned axle is supported in rotation freely;
The press part hole that spues is in the end plate portion of above-mentioned upper bearing (metal), to above-mentioned pressing chamber opening;
Last noise reduction is covered, and is fixed on the upside of the end plate portion of above-mentioned upper bearing (metal), covers above-mentioned press part and spues the hole and form the anechoic chamber;
The last noise reduction hole that spues, noise reduction covers on above-mentioned, to the seal container inner opening;
Discharge pipe is equipped on the upper end portion of above-mentioned seal container, and the outside of the refrigeration agent in the above-mentioned seal container to above-mentioned seal container spued;
It is characterized in that,
Noise reduction spues near the height that the hole was positioned on the outer circumferential face of above-mentioned seal container above-mentioned, is provided with the temperature transducer that spues of the temperature that detects compressed refrigerant.
2. rotary compressor as claimed in claim 1 is characterized in that,
Above-mentioned go up the noise reduction lid have substantially horizontal end plate portion, vertical direction side plate and on the above-mentioned side plate on above-mentioned seal container inner peripheral surface opening the noise reduction hole that spues;
With above-mentioned on noise reduction spue and be provided with the temperature transducer that spues of the temperature that detects compressed refrigerant on the outer circumferential face of the opposed seal container in hole.
3. rotary compressor as claimed in claim 1 is characterized in that,
Above-mentioned go up the noise reduction lid have substantially horizontal end plate portion, vertical direction side plate and on the above-mentioned side plate as on spue hole and of noise reduction towards the portion of having cut of above-mentioned seal container inner peripheral surface opening;
With above-mentioned on noise reduction spue and be provided with the temperature transducer that spues of the temperature that detects compressed refrigerant on the outer circumferential face of the opposed seal container in hole.
4. rotary compressor as claimed in claim 1 is characterized in that,
Have be fixed on above-mentionedly go up that noise reduction covers, an end to above-mentioned go up anechoic chamber's inner opening and the other end as the last noise reduction last hush pipe of hole that spue towards above-mentioned seal container inner peripheral surface opening;
With above-mentioned on noise reduction spue and be provided with the temperature transducer that spues of the temperature that detects compressed refrigerant on the outer circumferential face of the opposed seal container in hole.
5. rotary compressor as claimed in claim 1 is characterized in that,
Above-mentioned go up side plate that the noise reduction lid has end plate portion, the vertical direction of substantially horizontal, the extension of the inner peripheral surface that approaches above-mentioned seal container on the above-mentioned side plate and on the above-mentioned extension on above-mentioned seal container inner peripheral surface opening the noise reduction hole that spues;
With above-mentioned on noise reduction spue and be provided with the temperature transducer that spues of the temperature that detects compressed refrigerant on the outer circumferential face of the opposed seal container in hole.
6. rotary compressor as claimed in claim 1 is characterized in that,
Have on the end plate of above-mentioned upper bearing (metal) an end on above-mentioned anechoic chamber's inner opening and the other end as on the noise reduction hole path that in the bearing end plate of above-mentioned seal container inner peripheral surface opening, spues that spues;
With above-mentioned on noise reduction spue and be provided with the temperature transducer that spues of the temperature that detects compressed refrigerant on the outer circumferential face of the opposed seal container in hole.
7. as each described rotary compressor in the claim 1～6, it is characterized in that rotating speed is variable.
8. as each described rotary compressor in the claim 1～7, it is characterized in that, the low pressure suction pipe of above-mentioned press part has the rudimentary side press part that is configured in downside, the senior side press part that is configured in upside, be connected the exhaust end of above-mentioned rudimentary side press part with the suction side of above-mentioned senior side press part middle connecting path, the suction side that is connected to above-mentioned rudimentary side press part and be connected to above-mentioned in the middle of connecting path in the middle of press suction pipe.
9. heat pump, possess refrigeration cycle that compressor, condenser, expansion mechanism, vaporizer are connected with pipe arrangement successively and the temperature that detects a plurality of positions of above-mentioned refrigeration cycle and control the control gear of the amount of restriction of the rotating speed of above-mentioned compressor and above-mentioned expansion mechanism, it is characterized in that
As above-mentioned compressor, use each described rotary compressor in the claim 1～7;
The detected temperatures of the temperature transducer that spues on the outer circumferential face of the seal container by being located at above-mentioned compressor is controlled the rotating speed of the amount of restriction and the above-mentioned compressor of above-mentioned expansion mechanism, suitably keeps being drawn into the degree of superheat of the refrigeration agent in the above-mentioned compressor.
10. heat pump, it is gas blowing circuit heat pump, possess compressor, condenser, basic circulation expansion mechanism, the basic refrigeration cycle that vaporizer connects with pipe arrangement successively, and possess the part of the high-pressure refrigerant behind the above-mentioned condensator outlet as the branched pipe of ejector refrigeration agent from above-mentioned basic refrigeration cycle branch, make the injection expansion mechanism of above-mentioned ejector refrigeration agent decompression for the intermediate pressure of the pressure of the pressure of above-mentioned condenser and above-mentioned vaporizer, inner heat exchanger with the high-pressure refrigerant heat exchange of the above-mentioned basic refrigeration cycle after post-decompression above-mentioned ejector refrigeration agent and the branch, the injection pipe arrangement that above-mentioned ejector refrigeration agent after the above-mentioned heat exchange is sucked in the compression of above-mentioned compressor midway, control the rotating speed of above-mentioned compressor with the temperature at a plurality of positions of detecting above-mentioned refrigeration cycle, the control gear that above-mentioned basic circulation is used the amount of restriction of expansion mechanism with the amount of restriction and the above-mentioned injection of expansion mechanism, it is characterized in that
As above-mentioned compressor, use the described rotary compressor of claim 8, the discharge pipe of above-mentioned compressor is connected with above-mentioned condenser, the low pressure suction pipe of above-mentioned compressor is connected with above-mentioned vaporizer, press suction pipe to be connected in the middle of will above-mentioned compressor with above-mentioned injection pipe arrangement;
The detected temperatures of the temperature transducer that spues on the outer circumferential face of the seal container by being located at above-mentioned compressor, control above-mentioned the injection amount of restriction of expansion mechanism and the rotating speed of above-mentioned compressor, suitably keep being drawn into the middle degree of superheat or the degree of dryness of pressing the refrigeration agent in the suction pipe of above-mentioned compressor.
11. heat pump, it is gas blowing circuit heat pump, with compressor, condenser, the 1st expansion mechanism, the intermediate pressure gas liquid/gas separator, the 2nd expansion mechanism, vaporizer constitutes basic refrigeration cycle with the pipe arrangement connection successively, and possesses the injection pipe arrangement that the gas refrigerant of above-mentioned intermediate pressure gas liquid/gas separator is sucked from basic refrigeration cycle branch and in the compression of above-mentioned compressor as the ejector refrigeration agent midway, control the rotating speed of above-mentioned compressor with the temperature at a plurality of positions of detecting above-mentioned refrigeration cycle, the control gear of the amount of restriction of the amount of restriction of above-mentioned the 1st expansion mechanism and above-mentioned the 2nd expansion mechanism, it is characterized in that
As above-mentioned compressor, use the described rotary compressor of claim 8, the discharge pipe of above-mentioned compressor is connected with above-mentioned condenser, the low pressure suction pipe of above-mentioned compressor is connected with above-mentioned vaporizer, press suction pipe to be connected in the middle of will above-mentioned compressor with above-mentioned injection pipe arrangement;
The detected temperatures of the temperature transducer that spues on the outer circumferential face of the seal container by being located at above-mentioned compressor, control the amount of restriction of the amount of restriction of above-mentioned the 1st expansion mechanism, above-mentioned 2 expansion mechanisms and the rotating speed of above-mentioned compressor, suitably keep being drawn into the middle degree of superheat or the degree of dryness of pressing the refrigeration agent in the suction pipe of above-mentioned compressor.
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| JP2006266429 | 2006-09-29 | ||
| JP2006266429 | 2006-09-29 | ||
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| CNA2007101532566A Pending CN101153600A (en) | 2006-09-29 | 2007-09-29 | Rotary compressor and heat pump system |
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