CN104883005A - Motor cooling structure, air conditioner, and motor cooling method - Google Patents
Motor cooling structure, air conditioner, and motor cooling method Download PDFInfo
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- CN104883005A CN104883005A CN201510320810.XA CN201510320810A CN104883005A CN 104883005 A CN104883005 A CN 104883005A CN 201510320810 A CN201510320810 A CN 201510320810A CN 104883005 A CN104883005 A CN 104883005A
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Abstract
The invention provides a motor cooling structure, an air conditioner, and a motor cooling method. The motor cooling structure includes a motor, a refrigerant pipe, a control valve, a first temperature sensor, a second temperature sensor, and a controller, the refrigerant pipe is arranged on the motor, the first end of the refrigerant pipe is connected with an outlet main pipeline of a condenser of the air conditioner, the second end of the refrigerant pipe is connected with a gas-liquid separator of the air conditioner, the control valve controls the opening and closing of the refrigerant pipe, when the refrigerant pipe is opened, refrigerant of the air conditioner enters into the refrigerant pipe via the first end through the outlet main pipeline and flows into the gas-liquid separator via the second end after passing through the motor, the first temperature sensor detects the outlet pipe temperature of a cooling branch, the second temperature sensor detects the outlet pipe temperature of a four-way valve, and the controller adjusts the opening degree of the control valve based on the difference of the outlet pipe temperature of the cooling branch and the outlet pipe temperature of the four-way valve. According to the invention, the motor cooling effect of the air conditioner is improved, and the energy efficiency of the motor can be maximally performed based on the normal operation of the air conditioner.
Description
Technical field
The present invention relates to air-conditioning technical field, in particular to a kind of motor radiating structure, a kind of air conditioner and a kind of motor radiating method.
Background technology
At present, along with the raising of people's living standard and the enhancing of awareness of saving energy, vast average family come into by convertible frequency air-conditioner, and obtains applying more and more widely.Existing air conditioner is all generally the fin taking to open on the surface of motor different modes, carrys out the method for cooling motor with the air quantity flowing through its surface.The features such as direct current variable frequency motor is energy-conservation with it, flexible, the easy installation and maintenance of control, are applied in air-conditioning system more and more, are substantially increased heat transfer effect and the service efficiency of air-conditioning system.
But, along with the rising of indoor and outdoor temperature, the increase of motor speed, caloric value is also larger, being in this state for a long time can make the operating efficiency of motor reduce, also motor may be burnt out time serious, the effectiveness comparison of this forced-convection heat transfer is poor, when air conditioner runs when some are severe, amount that the motor feels hot can continue to rise, finally motor is likely caused to burn out, due to the heating quantitative limitation of motor, the mode such as Limited Current and rotation speed of fan often taked by convertible frequency air-conditioner, with reduce motor be in operation produce heat, the energy of motor is caused not to be effectively utilized like this, affect the normal operation of air-conditioning, also the safety and reliability that air-conditioning uses can be reduced.
Therefore, how while guarantee air-conditioning normally runs, effectively for electric motor temperature reduction dispels the heat, become current problem demanding prompt solution.
Summary of the invention
The present invention, just based on the problems referred to above, proposes a kind of new technical scheme, while can ensureing that air-conditioning normally runs, is electric motor temperature reduction heat radiation effectively.
For this reason, one object of the present invention is to propose a kind of motor radiating structure.
Another object of the present invention is to propose a kind of air conditioner, has above-mentioned motor radiating structure.
Another object of the present invention is to propose a kind of motor radiating method, uses above-mentioned motor radiating structure.
For achieving the above object, the embodiment of a first aspect of the present invention proposes a kind of motor radiating structure, for air conditioner, comprising: motor, for driving described air conditioner work; Refrigerant pipe, is arranged on described motor, and the first end of described refrigerant pipe is connected to the outlet main line of the condenser of described air conditioner, and the second end of described refrigerant pipe is connected to the gas-liquid separator of described air conditioner; Control valve, be arranged on described refrigerant pipe, for controlling the break-make of described refrigerant pipe, wherein, when described refrigerant pipe conducting, the refrigerant of described air conditioner enters described refrigerant pipe from described outlet main line through described first end, and is flowing into described gas-liquid separator by described second end after described motor; First temperature sensor, is arranged on described refrigerant pipe, for detecting cooling branch road outlet temperature; Second temperature sensor, is arranged on the gaseous coolant export pipeline of the cross valve of described air conditioner, for detecting cross valve outlet temperature; Controller, is connected to described first temperature sensor, described second temperature sensor and described control valve, for adjusting the aperture of described control valve according to the difference of described cooling branch road outlet temperature and described cross valve outlet temperature.
Motor radiating structure according to an embodiment of the invention, draws a branch road at the condensator outlet of air conditioner, this branch road and refrigerant pipe, and refrigerant pipe is connected to the gas-liquid separator of air conditioner through the motor of air conditioner, meanwhile, refrigerant pipe is also provided with control valve.Cooling branch road outlet temperature that the first temperature sensor detects and the difference of cross valve outlet temperature that the second temperature sensor detects is calculated by controller, if difference exceedes predetermined threshold range, illustrate that the operating pressure of air conditioner is larger, power of motor is too high, radiating effect is bad, the aperture of control valve is just needed to strengthen, the part refrigerant of condenser will flow to refrigerant pipe as branch road from the outlet main line of condenser, the flow of refrigerant is increased, thus through motor be motor heat absorption, refrigerant after heat absorption flows into gas-liquid separator through refrigerant pipe again, to re-circulate to the compressor of air conditioner, so constantly circulation, just can realize the thermolysis to motor.If difference does not reach predetermined threshold range, illustrate that the operating pressure of air conditioner is little, be that motor carries out temperature with high efficiency without the need to too much refrigerant, at this moment the aperture of control valve reduced, reduce the flow of refrigerant, and then reduce the cooling effect to motor.By this technical scheme, to the difference of branch road outlet temperature and cross valve outlet temperature be cooled as judging the foundation whether motor is overheated, effectively control the flow of refrigerant, make to have more flexibility and practicality to the control of motor radiating, the refrigerant flowing out condenser can be utilized to lower the temperature for motor radiating when motor temperature is too high, save the cost for electric motor temperature reduction heat radiation, and effectively reduce the working temperature of motor, thus the running current of air conditioner need not be limited because motor temperature is too high or reduce fan blade rotating speed, the efficiency of motor is played to greatest extent.Meanwhile, the refrigerant that refrigerant pipe flows out is returned the gas-liquid separator of air conditioner, the waste of refrigerant can be avoided, improve Consumer's Experience, save the job costs of air conditioner.
In addition, the motor radiating structure provided according to the above embodiment of the present invention also has following additional technical feature:
According to one embodiment of present invention, described refrigerant pipe coiling or embedding are arranged on the surface of described motor.
Motor radiating structure according to an embodiment of the invention, refrigerant pipe coiling or embedding are arranged on the surface of motor, the surface area of refrigerant pipe can be increased, namely the contact area of refrigerant pipe and motor is increased, thus the utilance that can promote refrigerant, with the radiating efficiency of lifting motor, certainly, the form that refrigerant pipe also can adapt to actual needs with other matches with motor.
According to one embodiment of present invention, described control valve is the first expansion valve or electromagnetically operated valve.
Motor radiating structure according to an embodiment of the invention, control valve can be expansion valve, and also can be electromagnetically operated valve, wherein, electromagnetically operated valve can coordinate the formation control valve arrangements such as capillary, to avoid the normal refrigeration affecting air conditioner because cold medium flux is excessive.In addition, control valve can also be other valves in addition as required.
According to one embodiment of present invention, also comprise: capillary, be arranged on the inside of described refrigerant pipe, connect with described control valve, for carrying out throttling to the described refrigerant flowing into described refrigerant pipe.
Motor radiating structure according to an embodiment of the invention, capillary can be individual layer capillary structure or multilayer capillary structure, is arranged on the inner tubal wall of refrigerant pipe, and its capillary structure can play throttling action, thus the convenient flow controlling refrigerant.In addition, the length of capillary can be arranged according to actual needs, and wherein, capillary is longer, and restriction effect is more remarkable.
According to one embodiment of present invention, also comprising: the second expansion valve, between described condenser and described motor, being arranged on described outlet main line or on described refrigerant pipe, for controlling the flow of described refrigerant.
Motor radiating structure according to an embodiment of the invention, need to arrange the second expansion valve controlling cold medium flux between condenser and motor, to avoid the normal refrigeration affecting air conditioner because cold medium flux is excessive, and avoid the radiating efficiency reducing motor because cold medium flux is too small.
According to one embodiment of present invention, the cross sectional shape of described refrigerant pipe is circular or polygon.
Motor radiating structure according to an embodiment of the invention, the cross sectional shape of refrigerant pipe can be circular or polygon, also can be other shapes in addition as required, wherein, the limit number of the cross sectional shape of refrigerant pipe is more or shape is more tortuous, the contact area of itself and refrigerant is larger, better to the cooling effect of motor.
According to one embodiment of present invention, described motor is provided with fan blade, producing air quantity when described fan blade rotates is described motor radiating.
Motor radiating structure according to an embodiment of the invention, can produce air-flow when fan blade rotates, the air-flow of flowing can be motor radiating.Can ensure still to realize motor radiating demand when refrigerant pipe breaks down, for the normal work of air conditioner provides guarantee by arranging fan blade.
According to one embodiment of present invention, also comprise: motor base, be arranged on below described motor, for placing described motor.
Motor radiating structure according to an embodiment of the invention, motor base can be used to place motor, makes motor firm, increases the fail safe of motor and air conditioner.
According to one embodiment of present invention, the quantity of described refrigerant pipe is one or more.
Motor radiating structure according to an embodiment of the invention, the quantity of refrigerant pipe can be single, thus reduces the cost of air conditioner, and when user's request, in order to ensure the radiating effect of motor, can also arrange multiple refrigerant pipe, to increase heat dissipation capacity.
Second aspect present invention embodiment provides a kind of air conditioner, this air conditioner has the motor radiating structure that first aspect present invention any embodiment provides, therefore this air conditioner has whole beneficial effects of the motor radiating structure that above-mentioned any embodiment provides, and does not repeat them here.
Third aspect present invention embodiment provides a kind of motor radiating method, use the motor radiating structure that first aspect present invention embodiment provides, for the air conditioner that second aspect present invention embodiment provides, comprise: the cooling branch road outlet temperature being detected the refrigerant pipe in described motor radiating structure by the first temperature sensor, and detected the cross valve outlet temperature of cross valve of described air conditioner by the second temperature sensor; According to the gentle described cross valve outlet temperature of described cooling branch road outlet, determine whether the aperture of the control valve adjusted in described motor radiating structure, for the flow of refrigerant determining whether the condenser from described air conditioner increased in described refrigerant pipe, wherein, described refrigerant pipe is arranged on the motor of described air conditioner.
Motor radiating method according to an embodiment of the invention, draws a branch road at the condensator outlet of air conditioner, this branch road and refrigerant pipe, and refrigerant pipe is connected to the gas-liquid separator of air conditioner through the motor of air conditioner, meanwhile, refrigerant pipe is also provided with control valve.Cooling branch road outlet temperature that the first temperature sensor detects and the difference of cross valve outlet temperature that the second temperature sensor detects is calculated by controller, if difference exceedes predetermined threshold range, illustrate that the operating pressure of air conditioner is larger, power of motor is too high, radiating effect is bad, the aperture of control valve is just needed to strengthen, the part refrigerant of condenser will flow to refrigerant pipe as branch road from the outlet main line of condenser, the flow of refrigerant is increased, thus through motor be motor heat absorption, refrigerant after heat absorption flows into gas-liquid separator through refrigerant pipe again, to re-circulate to the compressor of air conditioner, so constantly circulation, just can realize the thermolysis to motor.If difference does not reach predetermined threshold range, illustrate that the operating pressure of air conditioner is little, be that motor carries out temperature with high efficiency without the need to too much refrigerant, at this moment the aperture of control valve reduced, reduce the flow of refrigerant, and then reduce the cooling effect to motor.By this technical scheme, to the difference of branch road outlet temperature and cross valve outlet temperature be cooled as judging the foundation whether motor is overheated, effectively control the flow of refrigerant, make to have more flexibility and practicality to the control of motor radiating, the refrigerant flowing out condenser can be utilized to lower the temperature for motor radiating when motor temperature is too high, save the cost for electric motor temperature reduction heat radiation, and effectively reduce the working temperature of motor, thus the running current of air conditioner need not be limited because motor temperature is too high or reduce fan blade rotating speed, the efficiency of motor is played to greatest extent.Meanwhile, the refrigerant that refrigerant pipe flows out is returned the gas-liquid separator of air conditioner, the waste of refrigerant can be avoided, improve Consumer's Experience, save the job costs of air conditioner.
According to one embodiment of present invention, described according to the gentle described cross valve outlet temperature of described cooling branch road outlet, determine whether the aperture of the control valve adjusted in described motor radiating structure, specifically comprise: when the difference of the gentle described cross valve outlet temperature of described cooling branch road outlet is more than or equal to the first predetermined difference value threshold value, the aperture of described control valve is increased the first predetermined opening value, to increase the flow of the described refrigerant in described refrigerant pipe, it is described motor radiating; When described difference is less than or equal to the second predetermined difference value threshold value, the aperture of described control valve is reduced the second predetermined opening value, to reduce the flow of described refrigerant.
Motor radiating method according to an embodiment of the invention, cooling branch road outlet temperature that the first temperature sensor detects and the difference of cross valve outlet temperature that the second temperature sensor detects can be calculated, if difference exceedes predetermined threshold range, illustrate that the operating pressure of air conditioner is larger, power of motor is too high, radiating effect is bad, the aperture of control valve is just needed to strengthen, the part refrigerant of condenser will flow to refrigerant pipe as branch road from the outlet main line of condenser, the flow of refrigerant is increased, thus through motor be motor heat absorption, refrigerant after heat absorption flows into gas-liquid separator through refrigerant pipe again, to re-circulate to the compressor of air conditioner, so constantly circulation, just can realize the thermolysis to motor.If difference does not reach predetermined threshold range, illustrate that the operating pressure of air conditioner is little, be that motor carries out temperature with high efficiency without the need to too much refrigerant, at this moment the aperture of control valve reduced, reduce the flow of refrigerant, and then reduce the cooling effect to motor.
According to one embodiment of present invention, also comprise: when the time detecting that described control valve is in opening is more than or equal to predetermined time interval, detected the working temperature of described motor by motor temperature sensor; According to the working temperature of described motor, determine whether the aperture of described control valve to be set to zero.
Motor radiating method according to an embodiment of the invention, after control valve opens the long period, can think that motor has realized required radiating effect, just the aperture of control valve can be set to zero, stop carrying out radiating treatment to motor.Or, in order to not waste the cold of refrigerant, motor arranges a motor temperature sensor, be used for the working temperature of measured motor, after control valve opens the long period, when the working temperature of motor is within the scope of reservation threshold, just the aperture of control valve can be set to zero, stop carrying out radiating treatment to motor.And when the working temperature of motor exceeds predetermined temperature threshold range, just can open control valve, and then refrigerant inflow refrigerant pipe is come for motor radiating.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 shows the block diagram of motor radiating structure according to an embodiment of the invention;
Fig. 2 shows the block diagram of air conditioner according to an embodiment of the invention;
Fig. 3 shows the connection diagram of the motor radiating structure in air conditioner according to an embodiment of the invention;
Fig. 4 shows the flow chart of motor radiating method according to an embodiment of the invention;
Fig. 5 shows the flow chart of motor radiating method according to another embodiment of the invention;
Fig. 6 shows the relation schematic diagram that in the motor radiating method shown in Fig. 5, pipe temperature approach and control valve aperture regulate.
Wherein, the corresponding relation in Fig. 1 to Fig. 3 between Reference numeral and component names is:
1 air conditioner, 11 motor radiating structures, 111 motors, 112 refrigerant pipes, 113 control valves, 114 first temperature sensors, 115 second temperature sensors, 116 controllers, 117 second expansion valves, 118 motor temperature sensor, 12 condensers, 13 gas-liquid separators, 14 cross valves, 15 break valves, 16 compressors, 17 oil eliminators.
Embodiment
In order to more clearly understand above-mentioned purpose of the present invention, feature and advantage, below in conjunction with the drawings and specific embodiments, the present invention is further described in detail.It should be noted that, when not conflicting, the feature in the embodiment of the application and embodiment can combine mutually.
Set forth a lot of detail in the following description so that fully understand the present invention; but; the present invention can also adopt other to be different from other modes described here and implement, and therefore, protection scope of the present invention is not by the restriction of following public specific embodiment.
Fig. 1 shows the block diagram of motor radiating structure according to an embodiment of the invention.
As shown in Figure 1, motor radiating structure 11 according to an embodiment of the invention, for air conditioner, comprising: motor 111, for driving air conditioner work; Refrigerant pipe 112, is arranged on motor 111, and the first end of refrigerant pipe 112 is connected to the outlet main line of the condenser of air conditioner, and the second end of refrigerant pipe 112 is connected to the gas-liquid separator of air conditioner; Control valve 113, is arranged on refrigerant pipe 112, for controlling the break-make of refrigerant pipe 112, wherein, when refrigerant pipe 112 conducting, the refrigerant of air conditioner enters refrigerant pipe 112 from outlet main line through first end, and is flowing into gas-liquid separator by the second end after motor 111; First temperature sensor 114, is arranged on refrigerant pipe 112, for detecting cooling branch road outlet temperature; Second temperature sensor 115, is arranged on the gaseous coolant export pipeline of the cross valve of air conditioner, for detecting cross valve outlet temperature; Controller 116, is connected to the first temperature sensor 114, second temperature sensor 115 and control valve 113, for adjusting the aperture of control valve 113 according to the difference of cooling branch road outlet temperature and cross valve outlet temperature.
Motor radiating structure 11 according to an embodiment of the invention, draw a branch road at the condensator outlet of air conditioner, this branch road and refrigerant pipe 112, refrigerant pipe 112 is connected to the gas-liquid separator of air conditioner through the motor 111 of air conditioner, meanwhile, refrigerant pipe 112 is also provided with control valve 113.Cooling branch road outlet temperature that the first temperature sensor 114 detects and the difference of cross valve outlet temperature that the second temperature sensor 115 detects is calculated by controller 116, if difference exceedes predetermined threshold range, illustrate that the operating pressure of air conditioner is larger, motor 111 power is too high, radiating effect is bad, the aperture of control valve 113 is just needed to strengthen, the part refrigerant of condenser will flow to refrigerant pipe 112 as branch road from the outlet main line of condenser, the flow of refrigerant is increased, thus be that motor 111 absorbs heat when through motor 111, refrigerant after heat absorption flows into gas-liquid separator through refrigerant pipe 112 again, to re-circulate to the compressor of air conditioner, so constantly circulation, just can realize the thermolysis to motor 111.If difference does not reach predetermined threshold range, illustrate that the operating pressure of air conditioner is little, be that motor 111 carries out temperature with high efficiency without the need to too much refrigerant, at this moment the aperture of control valve 113 reduced, reduce the flow of refrigerant, and then reduce the cooling effect to motor 111.By this technical scheme, to the difference of branch road outlet temperature and cross valve outlet temperature be cooled as judging the foundation whether motor 111 is overheated, effectively control the flow of refrigerant, the control to motor 111 dispels the heat is made to have more flexibility and practicality, the refrigerant flowing out condenser can be utilized to be motor 111 radiating and cooling when motor temperature is too high, save the cost for motor 111 cooling, and effectively reduce the working temperature of motor 111, thus the running current of air conditioner need not be limited because motor temperature is too high or reduce fan blade rotating speed, the efficiency of motor 111 is played to greatest extent.Meanwhile, the refrigerant that refrigerant pipe 112 flows out is returned the gas-liquid separator of air conditioner, the waste of refrigerant can be avoided, improve Consumer's Experience, saved the job costs of air conditioner.
According to one embodiment of present invention, refrigerant pipe 112 coils or embeds the surface being arranged on motor 111.
Motor radiating structure 11 according to an embodiment of the invention, refrigerant pipe 112 coils or embeds the surface being arranged on motor 111, the surface area of refrigerant pipe 112 can be increased, namely the contact area of refrigerant pipe 112 and motor 111 is increased, thus the utilance that can promote refrigerant, with the radiating efficiency of lifting motor 111, certainly, the form that refrigerant pipe 112 also can adapt to actual needs with other matches with motor 111.
According to one embodiment of present invention, control valve 113 is the first expansion valve or electromagnetically operated valve.
Motor radiating structure 11 according to an embodiment of the invention, control valve 113 can be expansion valve, also can be electromagnetically operated valve, wherein, electromagnetically operated valve can coordinate formation control valve 113 structures such as capillary, to avoid the normal refrigeration affecting air conditioner because cold medium flux is excessive.In addition, control valve 113 can also be other valves in addition as required.
According to one embodiment of present invention, also comprise: capillary, be arranged on the inside of refrigerant pipe 112, connect with control valve 113, for carrying out throttling to the refrigerant flowing into refrigerant pipe 112.
Motor radiating structure 11 according to an embodiment of the invention, capillary can be individual layer capillary structure or multilayer capillary structure, and be arranged on the inner tubal wall of refrigerant pipe 112, its capillary structure can play throttling action, thus the convenient flow controlling refrigerant.In addition, the length of capillary can be arranged according to actual needs, and wherein, capillary is longer, and restriction effect is more remarkable.
According to one embodiment of present invention, also comprising: the second expansion valve, between condenser and motor 111, being arranged on outlet main line or on refrigerant pipe 112, for controlling the flow of refrigerant.
Motor radiating structure 11 according to an embodiment of the invention, need to arrange the second expansion valve controlling cold medium flux between condenser and motor 111, to avoid the normal refrigeration affecting air conditioner because cold medium flux is excessive, and avoid the radiating efficiency reducing motor 111 because cold medium flux is too small.
According to one embodiment of present invention, the cross sectional shape of refrigerant pipe 112 is circular or polygon.
Motor radiating structure 11 according to an embodiment of the invention, the cross sectional shape of refrigerant pipe 112 can be circular or polygon, also can be other shapes in addition as required, wherein, the limit number of the cross sectional shape of refrigerant pipe 112 is more or shape is more tortuous, the contact area of itself and refrigerant is larger, better to the cooling effect of motor 111.
According to one embodiment of present invention, motor 111 is provided with fan blade, producing air quantity when fan blade rotates is that motor 111 dispels the heat.
Motor radiating structure 11 according to an embodiment of the invention, can produce air-flow when fan blade rotates, the air-flow of flowing can dispel the heat for motor 111.Can ensure still to realize motor 111 radiating requirements when refrigerant pipe 112 breaks down, for the normal work of air conditioner provides guarantee by arranging fan blade.
According to one embodiment of present invention, also comprise: motor base, be arranged on below motor 111, for placing motor 111.
Motor radiating structure 11 according to an embodiment of the invention, motor base can be used to place motor 111, makes motor 111 firm, increases the fail safe of motor 111 and air conditioner.
According to one embodiment of present invention, the quantity of refrigerant pipe 112 is one or more.
Motor radiating structure 11 according to an embodiment of the invention, the quantity of refrigerant pipe 112 can be single, thus reduces the cost of air conditioner, and when user's request, in order to ensure the radiating effect of motor 111, multiple refrigerant pipe 112 can also be set, to increase heat dissipation capacity.
Fig. 2 shows the block diagram of air conditioner according to an embodiment of the invention.
As shown in Figure 2, the air conditioner 1 of one embodiment of the present of invention has the motor radiating structure 11 that any embodiment shown in Fig. 1 provides, therefore, air conditioner 1 has whole beneficial effects of the motor radiating structure 11 that above-mentioned any embodiment provides, and does not repeat them here.Meanwhile, this air conditioner 1 also comprises the parts such as compressor, condenser, gas-liquid separator, cross valve, oil eliminator, not shown in fig. 2.
Fig. 3 shows the connection diagram of the motor radiating structure in air conditioner according to an embodiment of the invention.
As shown in Figure 3, in air conditioner 1, control valve 113 is arranged on refrigerant pipe 112, and refrigerant pipe 112 one end is connected to motor 111, and the other end is connected to gas-liquid separator 13.Wherein, after control valve 113 is connected with the second expansion valve 117, in parallel with through the condensed primary flow path of condenser 12, the entrance of control valve 113 is between control valve 113 and break valve 15, or between condenser 12 and the second expansion valve 117, or be positioned at condenser 12 and export in the primary flow path of optional position.
The refrigerant pipe 112 of motor cooling branch road is wound around or is embedded on motor 111, the port of export of branch road is positioned on gas-liquid separator 13 entrance pipe, motor temperature sensor 118 is arranged on motor 111, the working temperature of motor 111 can be detected, first temperature sensor 114 is arranged on refrigerant pipe 112, for detecting cooling branch road outlet temperature, the second temperature sensor 115 is arranged on the gaseous coolant export pipeline of the cross valve 14 of air conditioner 1, for detecting cross valve outlet temperature.Compressor 16 is connected with oil eliminator 17, and oil eliminator 17 is connected to cross valve 14, and refrigerant can flow through compressor 16, oil eliminator 17, cross valve 14 successively.
When the unit of air conditioner 1 receives power-on command, compressor 16 is opened, work temperature d, the cooling branch road outlet temperature T9 and cross valve outlet temperature T10 of automatically controlled mainboard moment detection motor.
When satisfy condition Td >=e time, e is the first predetermined temperature threshold, control valve 113 is opened to initial opening Y, after unlatching t minute, the aperture of control valve 113 can be controlled by the difference DELTA T of cooling branch road outlet temperature T9 and cross valve outlet temperature T10, wherein, Δ T=T9-T10, as Δ T≤m, m is the first preset difference value threshold value, control valve 113 aperture is reduced n step; As a< Δ T<m, control valve 113 aperture remains unchanged, and wherein, a is the second difference threshold; As Δ T >=a, control valve 113 aperture is increased b step.Refrigerant is out divided into two-way afterwards from condenser 12, one road is flowed out from primary flow path pipe and is entered evaporation side, one tunnel enters motor 111 through control valve 113 and cools branch road, refrigerant arrives motor 111 after control valve 113 further throttling, motor 111 is dispelled the heat, absorb the refrigerant of motor heat, after the gaseous coolant after cross valve 14 converges, enter gas-liquid separator 13 with from evaporation side.When detecting that control valve 113 opens duration t >=c minute, can judge the work temperature d of motor, c is wherein predetermined time interval, as the work temperature d≤f of motor, f is the second predetermined temperature threshold, and control valve 113 is closed, and exits motor cooling order.Otherwise, continue to perform above-mentioned steps.
Fig. 4 shows the flow chart of motor radiating method according to an embodiment of the invention.
As shown in Figure 4, motor radiating method according to an embodiment of the invention, uses the motor radiating structure that above-mentioned any embodiment provides, and for air conditioner, comprising:
Step 402, detects the cooling branch road outlet temperature of the refrigerant pipe in motor radiating structure by the first temperature sensor, and passes through the cross valve outlet temperature that the second temperature sensor detects the cross valve of air conditioner.
Step 404, according to cooling branch road outlet gentle cross valve outlet temperature, determine whether the aperture of the control valve adjusted in motor radiating structure, for the flow of the refrigerant of the condenser from air conditioner determined whether in increase refrigerant pipe, wherein, refrigerant pipe is arranged on the motor of air conditioner.
Motor radiating method according to an embodiment of the invention, draws a branch road at the condensator outlet of air conditioner, this branch road and refrigerant pipe, and refrigerant pipe is connected to the gas-liquid separator of air conditioner through the motor of air conditioner, meanwhile, refrigerant pipe is also provided with control valve.Cooling branch road outlet temperature that the first temperature sensor detects and the difference of cross valve outlet temperature that the second temperature sensor detects is calculated by controller, if difference exceedes predetermined threshold range, illustrate that the operating pressure of air conditioner is larger, power of motor is too high, radiating effect is bad, the aperture of control valve is just needed to strengthen, the part refrigerant of condenser will flow to refrigerant pipe as branch road from the outlet main line of condenser, the flow of refrigerant is increased, thus through motor be motor heat absorption, refrigerant after heat absorption flows into gas-liquid separator through refrigerant pipe again, to re-circulate to the compressor of air conditioner, so constantly circulation, just can realize the thermolysis to motor.If difference does not reach predetermined threshold range, illustrate that the operating pressure of air conditioner is little, be that motor carries out temperature with high efficiency without the need to too much refrigerant, at this moment the aperture of control valve reduced, reduce the flow of refrigerant, and then reduce the cooling effect to motor.By this technical scheme, to the difference of branch road outlet temperature and cross valve outlet temperature be cooled as judging the foundation whether motor is overheated, effectively control the flow of refrigerant, make to have more flexibility and practicality to the control of motor radiating, the refrigerant flowing out condenser can be utilized to lower the temperature for motor radiating when motor temperature is too high, save the cost for electric motor temperature reduction heat radiation, and effectively reduce the working temperature of motor, thus the running current of air conditioner need not be limited because motor temperature is too high or reduce fan blade rotating speed, the efficiency of motor is played to greatest extent.Meanwhile, the refrigerant that refrigerant pipe flows out is returned the gas-liquid separator of air conditioner, the waste of refrigerant can be avoided, improve Consumer's Experience, save the job costs of air conditioner.
According to one embodiment of present invention, step 404 specifically comprises: when the difference cooling branch road outlet gentle cross valve outlet temperature is more than or equal to the first predetermined difference value threshold value, the aperture of control valve is increased the first predetermined opening value, to increase the flow of the refrigerant in refrigerant pipe, it is motor radiating; When difference is less than or equal to the second predetermined difference value threshold value, the aperture of control valve is reduced the second predetermined opening value, to reduce the flow of refrigerant.
Motor radiating method according to an embodiment of the invention, cooling branch road outlet temperature that the first temperature sensor detects and the difference of cross valve outlet temperature that the second temperature sensor detects can be calculated, if difference exceedes predetermined threshold range, illustrate that the operating pressure of air conditioner is larger, power of motor is too high, radiating effect is bad, the aperture of control valve is just needed to strengthen, the part refrigerant of condenser will flow to refrigerant pipe as branch road from the outlet main line of condenser, the flow of refrigerant is increased, thus through motor be motor heat absorption, refrigerant after heat absorption flows into gas-liquid separator through refrigerant pipe again, to re-circulate to the compressor of air conditioner, so constantly circulation, just can realize the thermolysis to motor.If difference does not reach predetermined threshold range, illustrate that the operating pressure of air conditioner is little, be that motor carries out temperature with high efficiency without the need to too much refrigerant, at this moment the aperture of control valve reduced, reduce the flow of refrigerant, and then reduce the cooling effect to motor.
According to one embodiment of present invention, also comprise: when the time detecting that control valve is in opening is more than or equal to predetermined time interval, detected the working temperature of motor by motor temperature sensor; According to the working temperature of motor, determine whether the aperture of control valve to be set to zero.
Motor radiating method according to an embodiment of the invention, after control valve opens the long period, can think that motor has realized required radiating effect, just the aperture of control valve can be set to zero, stop carrying out radiating treatment to motor.Or, in order to not waste the cold of refrigerant, motor arranges a motor temperature sensor, be used for the working temperature of measured motor, when the working temperature of motor is within the scope of reservation threshold, just the aperture of control valve can be set to zero, stop carrying out radiating treatment to motor.And when the working temperature of motor exceeds predetermined temperature threshold range, just can open control valve, and then refrigerant inflow refrigerant pipe is come for motor radiating.
Fig. 5 shows the flow chart of motor radiating method according to another embodiment of the invention.
As shown in Figure 5, motor radiating method according to another embodiment of the invention, comprising:
Step 502, detects the work temperature d of motor, cooling branch road outlet temperature T9 and cross valve outlet temperature T10.
Step 504, judges whether the work temperature d >=e of motor, and wherein, e is the first predetermined temperature threshold.When judged result is for being, entering step 506, when judged result is no, returning step 502.
Step 506, opening controlling valve, so that the refrigerant in condenser is imported refrigerant pipe, is motor radiating.
Step 508, as Δ T≤m, reduces n step by control valve aperture; As a< Δ T<m, retentive control valve opening is constant; As Δ T >=a, control valve aperture is increased b step, wherein, Δ T is the temperature gap of T9 and T10, and a is the first predetermined difference value threshold values, and m is the second predetermined difference value threshold values, and n is the first predetermined opening value, and b is the second predetermined opening value.Wherein, the relation that regulates of pipe temperature approach Δ T and control valve aperture as shown in Figure 6.
Step 510, detect that control valve opens duration t >=c minute, wherein, c is predetermined time interval.
Step 512, judges motor temperature Td, and as motor temperature Td≤f, wherein, f is the second predetermined temperature threshold values.When judged result is for being, entering step 514, when judged result is no, returning step 508.
Step 514, closed control valve, to forbid that refrigerant flows into refrigerant pipe, stops as motor radiating, and returns step 502.
More than be described with reference to the accompanying drawings technical scheme of the present invention, by technical scheme of the present invention, to the difference of branch road outlet temperature and cross valve outlet temperature be cooled as judging the foundation whether motor is overheated, effectively control the flow of refrigerant, make to have more flexibility and practicality to the control of motor radiating, the refrigerant flowing out condenser can be utilized to lower the temperature for motor radiating when motor temperature is too high, save the cost for electric motor temperature reduction heat radiation, and effectively reduce the working temperature of motor, thus the running current of air conditioner need not be limited because motor temperature is too high or reduce fan blade rotating speed, the efficiency of motor is played to greatest extent.Meanwhile, the refrigerant that refrigerant pipe flows out is returned the gas-liquid separator of air conditioner, the waste of refrigerant can be avoided, improve Consumer's Experience, save the job costs of air conditioner.
In the present invention, term " first ", " second ", " the 3rd " object only for describing, and instruction or hint relative importance can not be interpreted as; Term " multiple " represents two or more; Term " is connected ", " connection " etc. all should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be directly be connected, also indirectly can be connected by intermediary.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the description of this specification, specific features, structure, material or feature that the description of term " embodiment ", " another embodiment " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a motor radiating structure, for air conditioner, is characterized in that, comprising:
Motor, for driving described air conditioner work;
Refrigerant pipe, is arranged on described motor, and the first end of described refrigerant pipe is connected to the outlet main line of the condenser of described air conditioner, and the second end of described refrigerant pipe is connected to the gas-liquid separator of described air conditioner;
Control valve, be arranged on described refrigerant pipe, for controlling the break-make of described refrigerant pipe, wherein, when described refrigerant pipe conducting, the refrigerant of described air conditioner enters described refrigerant pipe from described outlet main line through described first end, and is flowing into described gas-liquid separator by described second end after described motor;
First temperature sensor, is arranged on described refrigerant pipe, for detecting cooling branch road outlet temperature;
Second temperature sensor, is arranged on the gaseous coolant export pipeline of the cross valve of described air conditioner, for detecting cross valve outlet temperature;
Controller, is connected to described first temperature sensor, described second temperature sensor and described control valve, for adjusting the aperture of described control valve according to the difference of described cooling branch road outlet temperature and described cross valve outlet temperature.
2. motor radiating structure according to claim 1, is characterized in that, described refrigerant pipe coiling or embedding are arranged on the surface of described motor.
3. motor radiating structure according to claim 2, is characterized in that, described control valve is the first expansion valve or electromagnetically operated valve.
4. motor radiating structure according to claim 3, is characterized in that, also comprises:
Capillary, is arranged on the inside of described refrigerant pipe, connects with described control valve, for carrying out throttling to the described refrigerant flowing into described refrigerant pipe.
5. motor radiating structure according to claim 3, is characterized in that, also comprises:
Second expansion valve, between described condenser and described motor, is arranged on described outlet main line or on described refrigerant pipe, for controlling the flow of described refrigerant.
6. motor radiating structure according to any one of claim 1 to 5, is characterized in that, the quantity of described refrigerant pipe is one or more.
7. an air conditioner, is characterized in that, comprises the motor radiating structure according to any one of claim 1 to 6.
8. a motor radiating method, uses the motor radiating structure according to any one of claim 1 to 6, for air conditioner, it is characterized in that, comprising:
Detected the cooling branch road outlet temperature of the refrigerant pipe in described motor radiating structure by the first temperature sensor, and detected the cross valve outlet temperature of cross valve of described air conditioner by the second temperature sensor;
According to the gentle described cross valve outlet temperature of described cooling branch road outlet, determine whether the aperture of the control valve adjusted in described motor radiating structure, for the flow of refrigerant determining whether the condenser from described air conditioner increased in described refrigerant pipe, wherein, described refrigerant pipe is arranged on the motor of described air conditioner.
9. motor radiating method according to claim 8, is characterized in that, described according to the gentle described cross valve outlet temperature of described cooling branch road outlet, determines whether the aperture of the control valve adjusted in described motor radiating structure, specifically comprises:
When the difference of the gentle described cross valve outlet temperature of described cooling branch road outlet is more than or equal to the first predetermined difference value threshold value, the aperture of described control valve is increased the first predetermined opening value, to increase the flow of the described refrigerant in described refrigerant pipe, it is described motor radiating;
When described difference is less than or equal to the second predetermined difference value threshold value, the aperture of described control valve is reduced the second predetermined opening value, to reduce the flow of described refrigerant.
10. motor radiating method according to claim 9, is characterized in that, also comprise:
When the time detecting that described control valve is in opening is more than or equal to predetermined time interval, detected the working temperature of described motor by motor temperature sensor;
According to the working temperature of described motor, determine whether the aperture of described control valve to be set to zero.
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| CN201510320810.XA CN104883005B (en) | 2015-06-11 | 2015-06-11 | Motor radiating structure, air conditioner and motor radiating method |
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| CN201510320810.XA CN104883005B (en) | 2015-06-11 | 2015-06-11 | Motor radiating structure, air conditioner and motor radiating method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106871375A (en) * | 2017-03-21 | 2017-06-20 | 广东美的暖通设备有限公司 | The condensation prevention control method and device of radiator in air-conditioning system and air-conditioning system |
| WO2018196741A1 (en) * | 2017-04-26 | 2018-11-01 | 珠海格力电器股份有限公司 | Air conditioner indoor unit |
| CN111895577A (en) * | 2020-07-27 | 2020-11-06 | 宁波奥克斯电气股份有限公司 | Four-way valve reversing control method and device, storage medium and air conditioner |
| CN112653293A (en) * | 2020-12-10 | 2021-04-13 | 珠海格力电器股份有限公司 | Temperature control equipment, motor refrigerant cold heat dissipation method, device, equipment and storage medium |
| CN112747391A (en) * | 2019-10-29 | 2021-05-04 | 青岛海尔空调电子有限公司 | Air conditioning unit and compressor cooling control method thereof |
| CN115076888A (en) * | 2022-05-07 | 2022-09-20 | 宁波奥克斯电气股份有限公司 | Motor temperature control method and device and air conditioner |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0751356A2 (en) * | 1995-06-26 | 1997-01-02 | Nippondenso Co., Ltd. | Air conditioning apparatus |
| JP2000146313A (en) * | 1998-11-02 | 2000-05-26 | Daikin Ind Ltd | Operation controller for refrigerating machine |
| CN101813358A (en) * | 2009-02-20 | 2010-08-25 | 乐金电子(天津)电器有限公司 | Air conditioning unit and method for detecting operation state thereof |
| CN201667606U (en) * | 2010-01-15 | 2010-12-08 | 珠海格力电器股份有限公司 | Air conditioner with heat dissipation function |
| CN201885479U (en) * | 2010-12-20 | 2011-06-29 | 天津柯瑞斯空调设备有限公司 | Variable frequency air cooling cold and hot water unit |
| CN103062851A (en) * | 2013-01-07 | 2013-04-24 | 青岛海信日立空调系统有限公司 | Air conditioning system and dehumidification method thereof |
| CN103375386A (en) * | 2012-04-26 | 2013-10-30 | 珠海格力电器股份有限公司 | Refrigeration compressor and air conditioner using same |
| CN103900222A (en) * | 2014-03-07 | 2014-07-02 | 广东美的暖通设备有限公司 | Method for cooling air conditioner electronic control frequency conversion module and air conditioner |
| CN204006853U (en) * | 2014-07-24 | 2014-12-10 | 美的集团武汉制冷设备有限公司 | Air-conditioning system |
| CN204345959U (en) * | 2014-12-15 | 2015-05-20 | 珠海格力电器股份有限公司 | Air-conditioner |
-
2015
- 2015-06-11 CN CN201510320810.XA patent/CN104883005B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0751356A2 (en) * | 1995-06-26 | 1997-01-02 | Nippondenso Co., Ltd. | Air conditioning apparatus |
| JP2000146313A (en) * | 1998-11-02 | 2000-05-26 | Daikin Ind Ltd | Operation controller for refrigerating machine |
| CN101813358A (en) * | 2009-02-20 | 2010-08-25 | 乐金电子(天津)电器有限公司 | Air conditioning unit and method for detecting operation state thereof |
| CN201667606U (en) * | 2010-01-15 | 2010-12-08 | 珠海格力电器股份有限公司 | Air conditioner with heat dissipation function |
| CN201885479U (en) * | 2010-12-20 | 2011-06-29 | 天津柯瑞斯空调设备有限公司 | Variable frequency air cooling cold and hot water unit |
| CN103375386A (en) * | 2012-04-26 | 2013-10-30 | 珠海格力电器股份有限公司 | Refrigeration compressor and air conditioner using same |
| CN103062851A (en) * | 2013-01-07 | 2013-04-24 | 青岛海信日立空调系统有限公司 | Air conditioning system and dehumidification method thereof |
| CN103900222A (en) * | 2014-03-07 | 2014-07-02 | 广东美的暖通设备有限公司 | Method for cooling air conditioner electronic control frequency conversion module and air conditioner |
| CN204006853U (en) * | 2014-07-24 | 2014-12-10 | 美的集团武汉制冷设备有限公司 | Air-conditioning system |
| CN204345959U (en) * | 2014-12-15 | 2015-05-20 | 珠海格力电器股份有限公司 | Air-conditioner |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106871375A (en) * | 2017-03-21 | 2017-06-20 | 广东美的暖通设备有限公司 | The condensation prevention control method and device of radiator in air-conditioning system and air-conditioning system |
| WO2018196741A1 (en) * | 2017-04-26 | 2018-11-01 | 珠海格力电器股份有限公司 | Air conditioner indoor unit |
| CN108800306A (en) * | 2017-04-26 | 2018-11-13 | 珠海格力电器股份有限公司 | A kind of air conditioner room unit |
| CN112747391A (en) * | 2019-10-29 | 2021-05-04 | 青岛海尔空调电子有限公司 | Air conditioning unit and compressor cooling control method thereof |
| CN111895577A (en) * | 2020-07-27 | 2020-11-06 | 宁波奥克斯电气股份有限公司 | Four-way valve reversing control method and device, storage medium and air conditioner |
| CN112653293A (en) * | 2020-12-10 | 2021-04-13 | 珠海格力电器股份有限公司 | Temperature control equipment, motor refrigerant cold heat dissipation method, device, equipment and storage medium |
| CN112653293B (en) * | 2020-12-10 | 2022-03-18 | 珠海格力电器股份有限公司 | Temperature control equipment, motor refrigerant cold heat dissipation method, device, equipment and storage medium |
| CN115076888A (en) * | 2022-05-07 | 2022-09-20 | 宁波奥克斯电气股份有限公司 | Motor temperature control method and device and air conditioner |
| CN115076888B (en) * | 2022-05-07 | 2023-10-20 | 宁波奥克斯电气股份有限公司 | Motor temperature control method and device and air conditioner |
| CN116073596A (en) * | 2022-12-07 | 2023-05-05 | 国能大渡河枕头坝发电有限公司 | Temperature rise control system and method for stator of generator set |
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