CN104883005B - Motor radiating structure, air conditioner and motor radiating method - Google Patents
Motor radiating structure, air conditioner and motor radiating method Download PDFInfo
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- CN104883005B CN104883005B CN201510320810.XA CN201510320810A CN104883005B CN 104883005 B CN104883005 B CN 104883005B CN 201510320810 A CN201510320810 A CN 201510320810A CN 104883005 B CN104883005 B CN 104883005B
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Abstract
The present invention proposes a kind of motor radiating structure, a kind of air conditioner and a kind of motor radiating method, wherein motor radiating structure includes：Motor；Refrigerant pipe is arranged on motor, and the first end of refrigerant pipe is connected to the outlet main line of the condenser of air conditioner, and the second end of refrigerant pipe is connected to the gas-liquid separator of air conditioner；Control valve, the break-make for controlling refrigerant pipe, when refrigerant pipe is connected, the refrigerant of air conditioner enters refrigerant pipe from outlet main line through first end, and is flowing into gas-liquid separator by second end after motor；First temperature sensor exports tube temperature for detecting cooling branch；Second temperature sensor, for detecting four-way valve outlet tube temperature；Controller, the aperture for exporting tube temperature and the difference adjustment control valve of four-way valve outlet tube temperature according to cooling branch.By the technical solution, the motor radiating effect of air conditioner is improved, on the basis of ensureing air conditioner normal operation, the efficiency of motor is made to be played to greatest extent.
Description
Technical field
The present invention relates to air-conditioning technical fields, in particular to a kind of motor radiating structure, a kind of air conditioner and one kind
Motor radiating method.
Background technology
Currently, with the improvement of people ' s living standards with the enhancing of awareness of saving energy, convertible frequency air-conditioner come into vast common family
Front yard, and have been more and more widely used.Existing air conditioner is typically all to take to open different modes on the surface of motor
Cooling fin, the method for cooling down motor with the air quantity for flowing through its surface.Direct current variable frequency motor is energy saving with its, control is flexible, easy
The features such as installing and safeguarding is applied in air-conditioning system more and more, substantially increase air-conditioning system heat transfer effect and
Service efficiency.
But with the raising of indoor and outdoor temperature, the increase of motor speed, calorific value is also bigger, is in this for a long time
State can be such that the working efficiency of motor reduces, and be also possible to that motor can be burnt out when serious, the effect of this forced-convection heat transfer compares
Difference, when air conditioner is run in the case where some are severe, motor feels hot can continue to rise, and finally be likely to result in motor burning
Bad, due to the limitation of the calorific value of motor, convertible frequency air-conditioner often takes the limitation modes such as electric current and rotation speed of fan, to reduce motor
The heat generated in operation causes the energy of motor that cannot be effectively utilized, influences the normal operation of air-conditioning in this way,
The safety and reliability that air-conditioning uses can be reduced.
Therefore, it how while ensureing air-conditioning normal operation, effectively radiates for electric motor temperature reduction, becomes and urgently solve at present
Certainly the problem of.
Invention content
The present invention is based on the above problem, it is proposed that a kind of new technical solution, it is ensured that air-conditioning normal operation
Meanwhile it effectively radiating for electric motor temperature reduction.
For this purpose, an object of the present invention is to provide a kind of motor radiating structures.
It is another object of the present invention to propose a kind of air conditioner, there is 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.
To achieve the above object, the embodiment of the first aspect of the present invention proposes a kind of motor radiating structure, for sky
Device is adjusted, including：Motor, for driving the air conditioner to work；Refrigerant pipe is arranged on the motor, and the of the refrigerant pipe
One end is connected to the outlet main line of the condenser of the air conditioner, and the second end of the refrigerant pipe is connected to the air conditioner
Gas-liquid separator；Control valve is arranged on the refrigerant pipe, the break-make for controlling the refrigerant pipe, wherein when the refrigerant
When pipe is connected, the refrigerant of the air conditioner enters the refrigerant pipe from the outlet main line through the first end, and is passing through
The gas-liquid separator is flowed by the second end after the motor；First temperature sensor is arranged on the refrigerant pipe, uses
Tube temperature is exported in the cooling branch of detection；The gaseous coolant outlet in the four-way valve of the air conditioner is arranged in second temperature sensor
On pipeline, for detecting four-way valve outlet tube temperature；Controller is connected to first temperature sensor, the second temperature passes
Sensor and the control valve, for adjusting institute according to the difference of the cooling branch outlet tube temperature and the four-way valve outlet tube temperature
State the aperture of control valve.
Motor radiating structure according to an embodiment of the invention draws a branch in the condensator outlet of air conditioner, should
Branch, that is, refrigerant pipe, motor of the refrigerant pipe through air conditioner are connected to the gas-liquid separator of air conditioner, meanwhile, it is also set on refrigerant pipe
Control valve is set.The cooling branch that the detection of the first temperature sensor is calculated by controller exports tube temperature and second temperature sensor
The difference of the four-way valve outlet tube temperature of detection illustrates that the operating pressure of air conditioner is larger if difference is more than predetermined threshold range,
Power of motor is excessively high, and heat dissipation effect is bad, it is necessary to increase the aperture of control valve, the part refrigerant of condenser will be from condensation
The outlet main line of device flow to the refrigerant pipe as branch, and the flow of refrigerant is made to increase, to be inhaled for motor when by motor
Heat, the refrigerant after absorbing heat flow into gas-liquid separator through refrigerant pipe again, to be re-circulated to the compressor of air conditioner, so not
Disconnected cycle, so that it may to realize the cooling effect to motor.If difference is not up to predetermined threshold range, illustrate the operation of air conditioner
Pressure is little, is that motor carries out temperature with high efficiency without excessive refrigerant, at this moment reduces the aperture of control valve, reduce the stream of refrigerant
Amount, and then reduce the cooling effect to motor.By the technical solution, cooling branch is exported into tube temperature and four-way valve outlet tube temperature
Difference as the foundation for judging whether motor overheats, efficiently controlled the flow of refrigerant so that the control to motor radiating
It is more flexible and practicability, using the refrigerant of outflow condenser can be that motor radiating cools down when motor temperature is excessively high, save
The cost for electric motor temperature reduction heat dissipation has been saved, and has effectively reduced the operating temperature of motor, from without due to motor temperature is excessively high
It limits the running current of air conditioner or reduces fan blade rotating speed, the efficiency of motor is made to be played to greatest extent.Meanwhile by refrigerant
The refrigerant of pipe outflow returns to the gas-liquid separator of air conditioner, is avoided that the waste of refrigerant, the user experience is improved, has saved air-conditioning
The job costs of device.
In addition, also there is following additional technical feature according to the motor radiating structure that the above embodiment of the present invention provides：
According to one embodiment of present invention, the refrigerant pipe coiling or insertion are arranged on the surface of the motor.
Motor radiating structure according to an embodiment of the invention, refrigerant pipe coiling or insertion are arranged on the surface of motor, can
To increase the surface area of refrigerant pipe, that is, increase the contact area of refrigerant pipe and motor, so as to promote the utilization rate to refrigerant,
To promote the radiating efficiency of motor, certainly, refrigerant pipe can also be matched in the form of other adaptation actual needs with motor.
According to one embodiment of present invention, the control valve is the first expansion valve or solenoid valve.
Motor radiating structure according to an embodiment of the invention, control valve can be expansion valve, can also be solenoid valve,
In, solenoid valve can coordinate the formation such as capillary to control valve arrangement, influence air conditioner just to avoid because cold medium flux is excessive
Often refrigeration.In addition, control valve can also be other valves as needed in addition to this.
According to one embodiment of present invention, further include：Capillary is arranged in the inside of the refrigerant pipe, with the control
Valve series connection processed, for throttling to the refrigerant for flowing into the refrigerant pipe.
Motor radiating structure according to an embodiment of the invention, capillary can be single layer capillary structure or multilayer capillary knot
Structure is arranged on the inner tubal wall of refrigerant pipe, and capillary structure can play throttling action, to facilitate the flow of control refrigerant.
In addition, the length of capillary can be configured according to actual needs, wherein capillary is longer, and restriction effect is more notable.
According to one embodiment of present invention, further include：Second expansion valve, be located at the condenser and the motor it
Between, it is arranged on the outlet main line or on the refrigerant pipe, the flow for controlling the refrigerant.
Motor radiating structure according to an embodiment of the invention needs setting control refrigerant stream between condenser and motor
Second expansion valve of amount, influences the normal refrigeration of air conditioner, and avoid because of cold medium flux to avoid because cold medium flux is excessive
Radiating efficiency that is too small and reducing motor.
According to one embodiment of present invention, the cross sectional shape of the refrigerant pipe is round or polygon.
The cross sectional shape of motor radiating structure according to an embodiment of the invention, refrigerant pipe can be round or polygon,
Or other shapes in addition to this as needed, wherein the number of edges of the cross sectional shape of refrigerant pipe is more or shape is more bent
Folding, it is bigger with the contact area of refrigerant, it is better to the cooling effect of motor.
According to one embodiment of present invention, fan blade is provided on the motor, air quantity is generated when the fan blade rotates is
The motor radiating.
Motor radiating structure according to an embodiment of the invention, fan blade will produce air-flow when rotating, and the air-flow of flowing can be with
For motor radiating.It can ensure still to realize motor radiating demand when refrigerant pipe breaks down by the way that fan blade is arranged, be air conditioner
Normal work provide guarantee.
According to one embodiment of present invention, further include：Motor base is arranged below the motor, for placing
State motor.
Motor radiating structure according to an embodiment of the invention, motor base can be used to place motor, keep motor firm, increase
Add the safety of motor and air conditioner.
According to one embodiment of present invention, the quantity of the refrigerant pipe is one or more.
The quantity of motor radiating structure according to an embodiment of the invention, refrigerant pipe can be single, to reduce air-conditioning
The cost of device, and in the case of user demand, in order to ensure the heat dissipation effect of motor, multiple refrigerant pipes can also be set, with
Increase heat dissipation capacity.
Second aspect of the present invention embodiment provides a kind of air conditioner, which has any reality of first aspect present invention
The motor radiating structure of example offer is applied, therefore the air conditioner has the whole of the motor radiating structure of any of the above-described embodiment offer
Advantageous effect, details are not described herein.
Third aspect present invention embodiment provides a kind of motor radiating method, is carried using first aspect present invention embodiment
The motor radiating structure of confession, for the air conditioner that second aspect of the present invention embodiment provides, including：Pass through the first temperature sensor
The cooling branch outlet tube temperature of the refrigerant pipe in the motor radiating structure is detected, and institute is detected by second temperature sensor
State the four-way valve outlet tube temperature of the four-way valve of air conditioner；According to the mild four-way valve outlet tube of the cooling branch outlet
Temperature, it is determined whether the aperture for adjusting the control valve in the motor radiating structure, for determining whether to increase in the refrigerant pipe
The condenser from the air conditioner refrigerant flow, wherein the refrigerant pipe is arranged on the motor of the air conditioner.
Motor radiating method according to an embodiment of the invention draws a branch in the condensator outlet of air conditioner, should
Branch, that is, refrigerant pipe, motor of the refrigerant pipe through air conditioner are connected to the gas-liquid separator of air conditioner, meanwhile, it is also set on refrigerant pipe
Control valve is set.The cooling branch that the detection of the first temperature sensor is calculated by controller exports tube temperature and second temperature sensor
The difference of the four-way valve outlet tube temperature of detection illustrates that the operating pressure of air conditioner is larger if difference is more than predetermined threshold range,
Power of motor is excessively high, and heat dissipation effect is bad, it is necessary to increase the aperture of control valve, the part refrigerant of condenser will be from condensation
The outlet main line of device flow to the refrigerant pipe as branch, and the flow of refrigerant is made to increase, to be inhaled for motor when by motor
Heat, the refrigerant after absorbing heat flow into gas-liquid separator through refrigerant pipe again, to be re-circulated to the compressor of air conditioner, so not
Disconnected cycle, so that it may to realize the cooling effect to motor.If difference is not up to predetermined threshold range, illustrate the operation of air conditioner
Pressure is little, is that motor carries out temperature with high efficiency without excessive refrigerant, at this moment reduces the aperture of control valve, reduce the stream of refrigerant
Amount, and then reduce the cooling effect to motor.By the technical solution, cooling branch is exported into tube temperature and four-way valve outlet tube temperature
Difference as the foundation for judging whether motor overheats, efficiently controlled the flow of refrigerant so that the control to motor radiating
It is more flexible and practicability, using the refrigerant of outflow condenser can be that motor radiating cools down when motor temperature is excessively high, save
The cost for electric motor temperature reduction heat dissipation has been saved, and has effectively reduced the operating temperature of motor, from without due to motor temperature is excessively high
It limits the running current of air conditioner or reduces fan blade rotating speed, the efficiency of motor is made to be played to greatest extent.Meanwhile by refrigerant
The refrigerant of pipe outflow returns to the gas-liquid separator of air conditioner, is avoided that the waste of refrigerant, the user experience is improved, has saved air-conditioning
The job costs of device.
According to one embodiment of present invention, described according to the mild four-way valve outlet tube of the cooling branch outlet
Temperature, it is determined whether the aperture for adjusting the control valve in the motor radiating structure specifically includes：When the cooling branch outlet
When the difference of the mild four-way valve outlet tube temperature is greater than or equal to the first predetermined difference value threshold value, the aperture of the control valve is increased
Add the first predetermined opening value, is the motor radiating to increase the flow of the refrigerant in the refrigerant pipe；When the difference
When less than or equal to the second predetermined difference value threshold value, the aperture of the control valve is reduced into the second predetermined opening value, described in reduction
The flow of refrigerant.
Motor radiating method according to an embodiment of the invention can calculate the cooling branch of the first temperature sensor detection
The difference of tube temperature and the four-way valve outlet tube temperature of second temperature sensor detection is exported, if difference is more than predetermined threshold range,
Illustrate that the operating pressure of air conditioner is larger, power of motor is excessively high, and heat dissipation effect is bad, it is necessary to the aperture of control valve is increased,
The part refrigerant of condenser will flow to the refrigerant pipe as branch from the outlet main line of condenser, and the flow of refrigerant is made to increase
Add, to absorb heat for motor when by motor, the refrigerant after absorbing heat flows into gas-liquid separator through refrigerant pipe again, so as to again
It is recycled to the compressor of air conditioner, is so constantly recycled, so that it may to realize the cooling effect to motor.If difference is not up to pre-
Determine threshold range, illustrate that the operating pressure of air conditioner is little, is that motor carries out temperature with high efficiency without excessive refrigerant, it at this moment will control
The aperture of valve processed reduces, and reduces the flow of refrigerant, and then reduce the cooling effect to motor.
According to one embodiment of present invention, further include：When detect the control valve be in open state time it is big
When predetermined time interval, the operating temperature of the motor is detected by motor temperature sensor；According to the motor
Operating temperature, it is determined whether the aperture of the control valve is set as zero.
Motor radiating method according to an embodiment of the invention, after control valve opens the long period, it is believed that motor is
Heat dissipation effect needed for realizing, so that it may the aperture of control valve is set as zero, stop carrying out radiating treatment to motor.Alternatively,
In order not to waste the cold of refrigerant, a motor temperature sensor is set on motor, is used for the operating temperature of measured motor, works as control
After valve processed opens the long period, when the operating temperature of motor is within the scope of reservation threshold, so that it may to set the aperture of control valve
It is set to zero, stops carrying out radiating treatment to motor.And when the operating temperature of motor exceeds predetermined temperature threshold range, so that it may with
Control valve is opened, and then so that refrigerant is flowed into refrigerant pipe and comes for motor radiating.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obviously, or practice through the invention is recognized.
Description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become in the description from combination following accompanying drawings to embodiment
Obviously and it is readily appreciated that, wherein：
Fig. 1 shows the block diagram of motor radiating structure according to an embodiment of the invention；
Fig. 2 shows the block diagrams 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 of motor radiating method middle pipe temperature difference and control valve aperture regulation shown in fig. 5.
Wherein, the correspondence 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 sensors, 12 condensers, 13 gas-liquids point
From device, 14 four-way valves, 15 shut-off valves, 16 compressors, 17 oil eliminators.
Specific implementation mode
To better understand the objects, features and advantages of the present invention, below in conjunction with the accompanying drawings and specific real
Mode is applied the present invention is further described in detail.It should be noted that in the absence of conflict, the implementation of the application
Feature in example and embodiment can be combined with each other.
Many details are elaborated in the following description to facilitate a thorough understanding of the present invention, still, the present invention may be used also
To be implemented different from other modes described here using other, therefore, protection scope of the present invention is not by described below
Specific embodiment limitation.
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, is used for air conditioner, including：Motor
111, for driving air conditioner to work；Refrigerant pipe 112 is arranged on motor 111, and the first end of refrigerant pipe 112 is connected to air-conditioning
The second end of the outlet main line of the condenser of device, refrigerant pipe 112 is connected to the gas-liquid separator of air conditioner；Control valve 113, if
Set on refrigerant pipe 112, the break-make for controlling refrigerant pipe 112, wherein when refrigerant pipe 112 is connected, the refrigerant of air conditioner from
Outlet main line enters refrigerant pipe 112 through first end, and is flowing into gas-liquid separator by second end after motor 111；First
Temperature sensor 114 is arranged on refrigerant pipe 112, and tube temperature is exported for detecting cooling branch；Second temperature sensor 115, if
It sets on the gaseous coolant outlet pipeline of the four-way valve of air conditioner, for detecting four-way valve outlet tube temperature；Controller 116, connection
To the first temperature sensor 114, second temperature sensor 115 and control valve 113, for exporting tube temperature and four according to cooling branch
Port valve exports the aperture of the difference adjustment control valve 113 of tube temperature.
Motor radiating structure 11 according to an embodiment of the invention draws a branch in the condensator outlet of air conditioner,
Branch, that is, the refrigerant pipe 112, motor 111 of the refrigerant pipe 112 through air conditioner are connected to the gas-liquid separator of air conditioner, meanwhile,
Control valve 113 is also provided on refrigerant pipe 112.The cooling branch of the first temperature sensor 114 detection is calculated by controller 116
The difference for the four-way valve outlet tube temperature that tube temperature is detected with second temperature sensor 115 is exported, if difference is more than predetermined threshold model
It encloses, illustrates that the operating pressure of air conditioner is larger, 111 power of motor is excessively high, and heat dissipation effect is bad, it is necessary to by control valve 113
Aperture increases, and the part refrigerant of condenser will flow to the refrigerant pipe 112 as branch from the outlet main line of condenser, make cold
The flow of matchmaker increases, and to absorb heat for motor 111 when by motor 111, the refrigerant after absorbing heat is flowed into through refrigerant pipe 112 again
Gas-liquid separator so constantly recycles to be re-circulated to the compressor of air conditioner, so that it may to realize dissipating to motor 111
Heat effect.If difference is not up to predetermined threshold range, illustrate that the operating pressure of air conditioner is little, is electricity without excessive refrigerant
Machine 111 carries out temperature with high efficiency, at this moment reduces the aperture of control valve 113, reduces the flow of refrigerant, and then reduce to motor 111
Cooling effect.By the technical solution, the difference that cooling branch is exported to tube temperature and four-way valve outlet tube temperature is electric as judging
The foundation whether machine 111 overheats has efficiently controlled the flow of refrigerant so that the control radiated to motor 111 is more flexible
And practicability, can when motor temperature is excessively high using outflow condenser refrigerant be 111 radiating and cooling of motor, save as electricity
The cost of 111 cooling and heat dissipation of machine, and the operating temperature of motor 111 is effectively reduced, from without being limited because motor temperature is excessively high
The running current of air conditioner processed reduces fan blade rotating speed, and the efficiency of motor 111 is made to be played to greatest extent.Meanwhile it will be cold
The refrigerant that matchmaker's pipe 112 flows out returns to the gas-liquid separator of air conditioner, is avoided that the waste of refrigerant, and the user experience is improved, saves
The job costs of air conditioner.
According to one embodiment of present invention, the coiling of refrigerant pipe 112 or insertion are arranged on the surface of motor 111.
Motor radiating structure 11 according to an embodiment of the invention, the coiling of refrigerant pipe 112 or insertion are arranged in motor 111
Surface can increase the surface area of refrigerant pipe 112, that is, increase the contact area of refrigerant pipe 112 and motor 111, so as to carry
The utilization rate to refrigerant is risen, to promote the radiating efficiency of motor 111, certainly, refrigerant pipe 112 can also be needed so that other adaptations are practical
The form wanted is matched with motor 111.
According to one embodiment of present invention, control valve 113 is the first expansion valve or solenoid valve.
Motor radiating structure 11 according to an embodiment of the invention, control valve 113 can be expansion valve, can also be electromagnetism
Valve, wherein solenoid valve can coordinate capillary etc. to form 113 structure of control valve, influence sky to avoid because cold medium flux is excessive
Adjust the normal refrigeration of device.In addition, control valve 113 can also be other valves as needed in addition to this.
According to one embodiment of present invention, further include：Capillary is arranged in the inside of refrigerant pipe 112, with control valve
113 series connection, for throttling to the refrigerant for flowing into refrigerant pipe 112.
Motor radiating structure 11 according to an embodiment of the invention, capillary can be single layer capillary structure or multilayer capillary
Structure is arranged on the inner tubal wall of refrigerant pipe 112, and capillary structure can play throttling action, to facilitate control refrigerant
Flow.In addition, the length of capillary can be configured according to actual needs, wherein capillary is longer, and restriction effect is more notable.
According to one embodiment of present invention, further include：Second expansion valve, between condenser and motor 111, setting
On outlet main line or on refrigerant pipe 112, the flow for controlling refrigerant.
Motor radiating structure 11 according to an embodiment of the invention needs that control is arranged between condenser and motor 111
Second expansion valve of cold medium flux influences the normal refrigeration of air conditioner to avoid because cold medium flux is excessive, and avoids because cold
Matchmaker's flow is too small and reduces the radiating efficiency of motor 111.
According to one embodiment of present invention, the cross sectional shape of refrigerant pipe 112 is round or polygon.
The cross sectional shape of motor radiating structure 11 according to an embodiment of the invention, refrigerant pipe 112 can be round or more
Side shape, or other shapes in addition to this as needed, wherein the number of edges of the cross sectional shape of refrigerant pipe 112 it is more or
Shape is more tortuous, bigger with the contact area of refrigerant, better to the cooling effect of motor 111.
According to one embodiment of present invention, fan blade is provided on motor 111, it is motor that air quantity is generated when fan blade rotates
111 heat dissipations.
Motor radiating structure 11 according to an embodiment of the invention, fan blade will produce air-flow when rotating, and the air-flow of flowing can
Think that motor 111 radiates.It can ensure still to realize that the heat dissipation of motor 111 is needed when refrigerant pipe 112 breaks down by the way that fan blade is arranged
It asks, guarantee is provided for the normal work of air conditioner.
According to one embodiment of present invention, further include：Motor base is arranged 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, make motor
111 is firm, increases the safety of motor 111 and air conditioner.
According to one embodiment of present invention, the quantity of refrigerant pipe 112 is one or more.
The quantity of motor radiating structure 11 according to an embodiment of the invention, refrigerant pipe 112 can be single, to reduce
The cost of air conditioner, and in the case of user demand, in order to ensure the heat dissipation effect of motor 111, can also be arranged multiple cold
Matchmaker's pipe 112, to increase heat dissipation capacity.
Fig. 2 shows the block diagrams of air conditioner according to an embodiment of the invention.
As shown in Fig. 2, the air conditioner 1 of one embodiment of the present of invention has the electricity that any embodiment shown in FIG. 1 provides
Machine radiator structure 11, therefore, air conditioner 1 have any of the above-described embodiment provide motor radiating structure 11 all beneficial to imitate
Fruit, details are not described herein.Meanwhile the air conditioner 1 further includes compressor, condenser, gas-liquid separator, four-way valve, oil eliminator
Equal parts, are 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 112 one end of refrigerant pipe is connected to
Motor 111, the other end are connected to gas-liquid separator 13.Wherein, after control valve 113 is connected with the second expansion valve 117, with through supercooling
12 condensed primary flow path of condenser is in parallel, and the entrance of control valve 113 is between control valve 113 and shut-off valve 15, or is located at cold
Between condenser 12 and the second expansion valve 117, or in the primary flow path that condenser 12 exports any position.
The winding of refrigerant pipe 112 of motor cooling branch is embedded on motor 111, and the outlet end of branch is located at gas-liquid separation
On 13 entrance pipe of device, motor temperature sensor 118 is arranged on motor 111, the operating temperature of detectable motor 111, and first
Temperature sensor 114 is arranged on refrigerant pipe 112, exports tube temperature for detecting cooling branch, second temperature sensor 115 is arranged
On the gaseous coolant outlet pipeline of the four-way valve 14 of air conditioner 1, for detecting four-way valve outlet tube temperature.Compressor 16 and oil
It is connected from device 17, oil eliminator 17 is connected to four-way valve 14, and refrigerant can be followed by compressor 16, oil eliminator 17, four-way
Valve 14.
When the unit of air conditioner 1 receives power-on command, compressor 16 is opened, the work of automatically controlled mainboard moment detection motor
Make temperature Td, cooling branch outlet tube temperature T9 and four-way valve outlet tube temperature T10.
When meeting condition Td >=e, e is the first predetermined temperature threshold, and control valve 113 is opened to initial opening Y, is being opened
After opening t minutes, the aperture of control valve 113 can export the difference of tube temperature T9 and four-way valve outlet tube temperature T10 by cooling branch
Δ T controls, wherein Δ T=T9-T10, as Δ T≤m, m is the first preset difference value threshold value, and 113 aperture of control valve is reduced n
Step；Work as a<ΔT<When m, 113 aperture of control valve remains unchanged, wherein a is the second difference threshold；As Δ T >=a, by control valve
113 apertures increase b steps.Refrigerant is divided into two-way after being come out from condenser 12, exits into evaporation side from primary flow path pipe all the way, all the way
Enter motor 111 by control valve 113 and cool down branch, refrigerant reaches motor 111 after control valve 113 further throttling, to electricity
Machine 111 radiates, and absorbs the refrigerant of motor heat, converges by the gaseous coolant after four-way valve 14 with from evaporation side
Enter gas-liquid separator 13 afterwards.It, can be to the work temperature of motor when detecting that control valve 113 opens duration t >=c minute
Degree Td is judged that c therein is predetermined time interval, and as work temperature d≤f of motor, f is the second predetermined temperature threshold
Value, control valve 113 are closed, and motor cooling order is exited.Otherwise, above-mentioned steps are continued to execute.
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, is provided using any of the above-described embodiment
Motor radiating structure, be used for air conditioner, including：
Step 402, the cooling branch outlet of the refrigerant pipe in motor radiating structure is detected by the first temperature sensor
Temperature, and by second temperature sensor detect air conditioner four-way valve four-way valve outlet tube temperature.
Step 404, according to the cooling mild four-way valve outlet tube temperature of branch outlet, it is determined whether adjustment motor radiating structure
In control valve aperture, for determine whether increase refrigerant pipe in the condenser from air conditioner refrigerant flow,
In, refrigerant pipe is arranged on the motor of air conditioner.
Motor radiating method according to an embodiment of the invention draws a branch in the condensator outlet of air conditioner, should
Branch, that is, refrigerant pipe, motor of the refrigerant pipe through air conditioner are connected to the gas-liquid separator of air conditioner, meanwhile, it is also set on refrigerant pipe
Control valve is set.The cooling branch that the detection of the first temperature sensor is calculated by controller exports tube temperature and second temperature sensor
The difference of the four-way valve outlet tube temperature of detection illustrates that the operating pressure of air conditioner is larger if difference is more than predetermined threshold range,
Power of motor is excessively high, and heat dissipation effect is bad, it is necessary to increase the aperture of control valve, the part refrigerant of condenser will be from condensation
The outlet main line of device flow to the refrigerant pipe as branch, and the flow of refrigerant is made to increase, to be inhaled for motor when by motor
Heat, the refrigerant after absorbing heat flow into gas-liquid separator through refrigerant pipe again, to be re-circulated to the compressor of air conditioner, so not
Disconnected cycle, so that it may to realize the cooling effect to motor.If difference is not up to predetermined threshold range, illustrate the operation of air conditioner
Pressure is little, is that motor carries out temperature with high efficiency without excessive refrigerant, at this moment reduces the aperture of control valve, reduce the stream of refrigerant
Amount, and then reduce the cooling effect to motor.By the technical solution, cooling branch is exported into tube temperature and four-way valve outlet tube temperature
Difference as the foundation for judging whether motor overheats, efficiently controlled the flow of refrigerant so that the control to motor radiating
It is more flexible and practicability, using the refrigerant of outflow condenser can be that motor radiating cools down when motor temperature is excessively high, save
The cost for electric motor temperature reduction heat dissipation has been saved, and has effectively reduced the operating temperature of motor, from without due to motor temperature is excessively high
It limits the running current of air conditioner or reduces fan blade rotating speed, the efficiency of motor is made to be played to greatest extent.Meanwhile by refrigerant
The refrigerant of pipe outflow returns to the gas-liquid separator of air conditioner, is avoided that the waste of refrigerant, the user experience is improved, has saved air-conditioning
The job costs of device.
According to one embodiment of present invention, step 404 specifically includes：When the cooling mild four-way valve outlet of branch outlet
When the difference of tube temperature is greater than or equal to the first predetermined difference value threshold value, the aperture of control valve is increased by the first predetermined opening value, to increase
Add the flow of the refrigerant in refrigerant pipe, is motor radiating；When difference is less than or equal to the second predetermined difference value threshold value, by control valve
Aperture reduce the second predetermined opening value, to reduce the flow of refrigerant.
Motor radiating method according to an embodiment of the invention can calculate the cooling branch of the first temperature sensor detection
The difference of tube temperature and the four-way valve outlet tube temperature of second temperature sensor detection is exported, if difference is more than predetermined threshold range,
Illustrate that the operating pressure of air conditioner is larger, power of motor is excessively high, and heat dissipation effect is bad, it is necessary to the aperture of control valve is increased,
The part refrigerant of condenser will flow to the refrigerant pipe as branch from the outlet main line of condenser, and the flow of refrigerant is made to increase
Add, to absorb heat for motor when by motor, the refrigerant after absorbing heat flows into gas-liquid separator through refrigerant pipe again, so as to again
It is recycled to the compressor of air conditioner, is so constantly recycled, so that it may to realize the cooling effect to motor.If difference is not up to pre-
Determine threshold range, illustrate that the operating pressure of air conditioner is little, is that motor carries out temperature with high efficiency without excessive refrigerant, it at this moment will control
The aperture of valve processed reduces, and reduces the flow of refrigerant, and then reduce the cooling effect to motor.
According to one embodiment of present invention, further include：When detect control valve be in open state time be more than or
When equal to predetermined time interval, the operating temperature of motor is detected by motor temperature sensor；According to the operating temperature of motor, really
It is fixed whether the aperture of control valve to be set as zero.
Motor radiating method according to an embodiment of the invention, after control valve opens the long period, it is believed that motor is
Heat dissipation effect needed for realizing, so that it may the aperture of control valve is set as zero, stop carrying out radiating treatment to motor.Alternatively,
In order not to waste the cold of refrigerant, a motor temperature sensor is set on motor, is used for the operating temperature of measured motor, works as electricity
When the operating temperature of machine is within the scope of reservation threshold, so that it may which, the aperture of control valve is set as zero, stopping dissipates motor
Heat treatment.And when the operating temperature of motor exceeds predetermined temperature threshold range, so that it may to open control valve, and then make refrigerant stream
Enter refrigerant pipe to 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, including：
Step 502, the work temperature d of motor, cooling branch outlet tube temperature T9 and four-way valve outlet tube temperature T10 are detected.
Step 504, judge whether work temperature d >=e of motor, wherein e is the first predetermined temperature threshold.When judgement is tied
Fruit is when being, to enter step 506, when judging result is no, return to step 502.
Step 506, the refrigerant in condenser is imported refrigerant pipe by opening controlling valve, is motor radiating.
Step 508, as Δ T≤m, control valve opening is reduced into n steps；Work as a<ΔT<When m, control valve opening is kept not
Become；As Δ T >=a, control valve opening is increased into b steps, wherein Δ T is the temperature gap of T9 and T10, and a is the first predetermined difference value
Threshold values, m are the second predetermined difference value threshold values, and n is the first predetermined opening value, and b is the second predetermined opening value.Wherein, tube temperature difference DELTA T
It is as shown in Figure 6 with the relationship of control valve aperture regulation.
Step 510, detect that control valve opens duration t >=c minute, wherein c is predetermined time interval.
Step 512, motor temperature Td is judged, as motor temperature Td≤f, wherein f is the second predetermined temperature valve
Value.When judging result is to be, 514 are entered step, when judging result is no, return to step 508.
Step 514, closing control valve is stopped as motor radiating, and return to step 502 with forbidding refrigerant to flow into refrigerant pipe.
Technical scheme of the present invention is described in detail above in association with attached drawing, technical solution through the invention, by cooling branch
The difference of way outlet tube temperature and four-way valve outlet tube temperature has efficiently controlled refrigerant as the foundation for judging whether motor overheats
Flow so that the control of motor radiating is more flexible and practicability, outflow condensation can be utilized when motor temperature is excessively high
The refrigerant of device cools down for motor radiating, saves the cost to radiate for electric motor temperature reduction, and effectively reduce the operating temperature of motor,
From without because motor temperature is excessively high limit air conditioner running current or reduce fan blade rotating speed, so that the efficiency of motor is obtained most
The performance of limits.Meanwhile the refrigerant of refrigerant pipe outflow being returned to the gas-liquid separator of air conditioner, it is avoided that the waste of refrigerant,
The user experience is improved, has saved the job costs of air conditioner.
In the present invention, term " first ", " second ", " third " are only used for the purpose of description, and should not be understood as indicating
Or imply relative importance；Term " multiple " indicates two or more；Term " connected ", " connection " etc. should all do broad sense reason
Solution, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can be directly connected, it can also
Indirectly connected through an intermediary.For the ordinary skill in the art, above-mentioned art can be understood as the case may be
The concrete meaning of language in the present invention.
In the description of this specification, the description of term " one embodiment ", " another embodiment " etc. means to combine and be somebody's turn to do
Embodiment or the particular features, structures, materials, or characteristics of example description are contained at least one embodiment of the present invention or example
In.In the present specification, schematic expression of the above terms are not necessarily referring to identical embodiment or example.Moreover, retouching
The particular features, structures, materials, or characteristics stated can in any one or more of the embodiments or examples in an appropriate manner
In conjunction with.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any made by repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of motor radiating structure is used for air conditioner, which is characterized in that including：
Motor, for driving the air conditioner to work；
Refrigerant pipe is arranged on the motor, and the first end of the refrigerant pipe is connected to the outlet of the condenser of the air conditioner
Main line, the second end of the refrigerant pipe are connected to the gas-liquid separator of the air conditioner；
Control valve is arranged on the refrigerant pipe, the break-make for controlling the refrigerant pipe, wherein when the refrigerant pipe is connected
When, the refrigerant of the air conditioner enters the refrigerant pipe from the outlet main line through the first end, and is passing through the electricity
The gas-liquid separator is flowed by the second end after machine；
First temperature sensor is arranged on the refrigerant pipe, and tube temperature is exported for detecting cooling branch；
Second temperature sensor is arranged on the gaseous coolant outlet pipeline of the four-way valve of the air conditioner, for detecting four-way
Valve outlet tube temperature；
Controller is connected to first temperature sensor, the second temperature sensor and the control valve, for according to institute
State the aperture that cooling branch outlet tube temperature adjusts the control valve with the difference of the four-way valve outlet tube temperature；
Motor temperature sensor is arranged on the motor, the operating temperature for detecting the motor.
2. motor radiating structure according to claim 1, which is characterized in that the refrigerant pipe coiling or embedded setting are in institute
State the surface of motor.
3. motor radiating structure according to claim 2, which is characterized in that the control valve is the first expansion valve or electromagnetism
Valve.
4. motor radiating structure according to claim 3, which is characterized in that further include：
Capillary is arranged in the inside of the refrigerant pipe, connects with the control valve, for flowing into described in the refrigerant pipe
Refrigerant throttles.
5. motor radiating structure according to claim 3, which is characterized in that further include：
Second expansion valve is arranged between the condenser and the motor on the outlet main line or the refrigerant
Guan Shang, the flow for controlling the refrigerant.
6. motor radiating structure according to any one of claim 1 to 5, which is characterized in that the quantity of the refrigerant pipe
For one or more.
7. a kind of air conditioner, which is characterized in that including motor radiating structure such as according to any one of claims 1 to 6.
8. a kind of motor radiating method is used for air-conditioning using motor radiating structure such as according to any one of claims 1 to 6
Device, which is characterized in that including：
The cooling branch that the refrigerant pipe in the motor radiating structure is detected by the first temperature sensor exports tube temperature, Yi Jitong
Cross the four-way valve outlet tube temperature that second temperature sensor detects the four-way valve of the air conditioner；
According to the mild four-way valve outlet tube temperature of the cooling branch outlet, it is determined whether adjust the motor radiating structure
In control valve aperture, for determining whether to increase the refrigerant of the condenser from the air conditioner in the refrigerant pipe
Flow, wherein the refrigerant pipe is arranged on the motor of the air conditioner；
When the air conditioner receives power-on command, compressor is opened, and motor temperature sensor detects the motor in real time
Operating temperature；
When the operating temperature is more than or equal to the first predetermined temperature threshold, the control valve is opened to initial opening；
When detecting that the control valve is in the time of open state more than or equal to predetermined time interval, pass through the motor
Temperature sensor detects the operating temperature of the motor；
According to the operating temperature of the motor, it is determined whether the aperture of the control valve is set as zero.
9. motor radiating method according to claim 8, which is characterized in that described to export tube temperature according to the cooling branch
With the four-way valve outlet tube temperature, it is determined whether the aperture for adjusting the control valve in the motor radiating structure specifically includes：
When the cooling branch outlet mildly the four-way valve outlet tube temperature difference be greater than or equal to the first predetermined difference value threshold
When value, the aperture of the control valve is increased by the first predetermined opening value, to increase the flow of the refrigerant in the refrigerant pipe,
For the motor radiating；
When the difference is less than or equal to the second predetermined difference value threshold value, the aperture of the control valve is reduced into the second predetermined aperture
Value, to reduce the flow of the refrigerant.
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| 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 |
| 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 |
| CN111895577B (en) * | 2020-07-27 | 2021-07-06 | 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 |
| 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 |
| 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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| US5701753A (en) * | 1995-06-26 | 1997-12-30 | Nippondenso Co., Ltd. | Air conditioning apparatus |
| JP4273547B2 (en) * | 1998-11-02 | 2009-06-03 | ダイキン工業株式会社 | Operation control device for refrigerator |
| CN101813358B (en) * | 2009-02-20 | 2013-09-11 | 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 |
| CN103062851B (en) * | 2013-01-07 | 2015-12-09 | 青岛海信日立空调系统有限公司 | Air-conditioning system and dehumanization method thereof |
| CN103900222B (en) * | 2014-03-07 | 2017-05-24 | 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 |
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