CN108951047B - Heat pump system capable of adjusting system load, clothes dryer and control method - Google Patents
Heat pump system capable of adjusting system load, clothes dryer and control method Download PDFInfo
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- CN108951047B CN108951047B CN201710349439.9A CN201710349439A CN108951047B CN 108951047 B CN108951047 B CN 108951047B CN 201710349439 A CN201710349439 A CN 201710349439A CN 108951047 B CN108951047 B CN 108951047B
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- 238000000034 method Methods 0.000 title claims abstract description 48
- 239000007788 liquid Substances 0.000 claims abstract description 108
- 238000001035 drying Methods 0.000 claims abstract description 55
- 239000003507 refrigerant Substances 0.000 claims abstract description 49
- 230000008859 change Effects 0.000 claims abstract description 11
- 238000005192 partition Methods 0.000 claims description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 230000005484 gravity Effects 0.000 claims description 4
- 239000011550 stock solution Substances 0.000 abstract description 5
- 238000010438 heat treatment Methods 0.000 description 6
- 238000007789 sealing Methods 0.000 description 6
- 238000009833 condensation Methods 0.000 description 5
- 230000005494 condensation Effects 0.000 description 5
- 238000001704 evaporation Methods 0.000 description 5
- 230000008020 evaporation Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F58/00—Domestic laundry dryers
- D06F58/20—General details of domestic laundry dryers
- D06F58/206—Heat pump arrangements
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F58/00—Domestic laundry dryers
- D06F58/30—Drying processes
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/50—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers related to heat pumps, e.g. pressure or flow rate
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
- D06F2105/26—Heat pumps
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Control Of Washing Machine And Dryer (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The utility model provides a heat pump system and dryer of adjustable system load, includes the drying cylinder, connects the stoving wind channel and the heat pump system that the part in the stoving wind channel was located to the drying cylinder air intake and air outlet, heat pump system is including evaporimeter, compressor, condenser, reservoir and the throttling arrangement who connects gradually, evaporimeter and condenser are located in the stoving wind channel, still are equipped with the reservoir, are equipped with reciprocating motion in the reservoir in order to change the volumetric baffle of stock solution chamber, and the reservoir is established ties on heat pump system to adjust the refrigerant flow in the heat pump system. The invention also provides a control method of the heat pump system clothes dryer capable of adjusting the system load, which adjusts the volume of the refrigerant liquid accumulator according to the operation temperature of the heat pump system and the operation frequency of the compressor so as to adjust the load of the heat pump system.
Description
Technical Field
The invention relates to the technical field of clothes dryers, in particular to a heat pump system capable of adjusting system load, a clothes dryer and a control method.
Background
People pursue the continuous improvement to the quality of life, and the dryer is also more and more accepted by the consumer, and wherein the heat pump system of heat pump dryer can the heat that produces in the drying process of ingenious recovery, does not need the heating pipe to heat, has reduced the waste of energy, and the temperature is stabilized at the medium temperature simultaneously, can not cause high temperature damage to the clothing.
The existing drum-type washing and drying integrated machine or clothes dryer adopting a heat pump drying mode adopts a variable frequency compressor system for accelerating the drying time. High-frequency operation is adopted in the low-temperature stage, and low-frequency operation is adopted in the high-temperature stage. However, this solution has the drawback that the amount of refrigerant used is usually set optimally at low energy consumption, i.e. low operating frequency, the flow rate in the system is small, the evaporation load is small, and the refrigerant is accumulated in the condenser by a large amount. When the compressor runs at low frequency, the load is increased quickly, and the drying effect is facilitated; however, in the high-frequency operation stage of the compressor, the optimized flow of the refrigerant is larger, the evaporation load is large, the condensation load is increased faster, and the increase of the condensation load is accelerated by more refrigerant.
When the frequency conversion system uses the quick drying program, the redundant refrigerant is higher in frequency of the compressor, the load of the compressor is accelerated to be increased, the frequency of the compressor is reduced due to the increase of the load in actual use, the high-frequency stage cannot be operated all the time, the evaporation refrigerating capacity is reduced, the time of the quick drying program is prolonged, and the advantage of high frequency of the compressor is not exerted.
In view of the above, the present invention is particularly proposed.
Disclosure of Invention
The invention aims to provide a heat pump system capable of adjusting system load and a clothes dryer, which adopt a reservoir with variable volume to change the effective usage amount of a refrigerant in the system so as to achieve the purpose of adjusting the system load according to the use condition.
In order to achieve the purpose, the invention specifically adopts the following technical scheme:
the utility model provides a heat pump system of adjustable system load, heat pump system is including evaporimeter 5, compressor 3, condenser 4, reservoir 1 and the throttling arrangement 2 that connect gradually, heat pump system still is equipped with reservoir 1, is equipped with reciprocating motion in the reservoir 1 in order to change the baffle 103 of stock solution chamber 101 volume, and reservoir 1 establishes ties on heat pump system to adjust the refrigerant flow in the heat pump system.
In the above scheme, the drying air duct 8 of the heat pump system is sequentially provided with a drying cylinder 7, an air outlet 702, a filter screen 9, an evaporator 5, a condenser 4, a fan 10 and an auxiliary heating wire 11 from an air inlet 701 in the air flowing direction, wherein the evaporator 5 and the condenser 4 are heat exchange structures in the heat pump system, a refrigerant flows through the evaporator 5 to absorb the waste heat of air flow after drying clothes, is compressed by a compressor 3 to raise the temperature and the pressure, and then exchanges heat with the air flow in the drying air duct 8 after passing through the condenser 4 to raise the temperature of the air flow passing through the condenser 4, then the air flow is guided into the air inlet of the drying cylinder by the fan 10, and the auxiliary heating wire 11 is added in the middle to supplement the temperature.
The invention further comprises the following steps: one side of the partition plate 103 is provided with a sealed liquid storage cavity 101, the other side of the partition plate is connected with a driving structure 104, the driving structure 104 comprises a driving part 1041 arranged on the outer side of the bottom of the liquid storage device 1 and a connecting part 1042 connected with the bottom surface of the partition plate 103, and the driving part 1041 controls the connecting part 1042 to stretch out and draw back inside the liquid storage device 1 to realize the reciprocating motion of the partition plate 103.
In the above solution, the driving portion 1041 of the driving structure 104 is disposed outside the liquid reservoir 1, so that the volume of the liquid reservoir 1 has a larger adjustment space.
The invention further comprises the following steps: reservoir 1 is a column casing, stock solution chamber 101 is for following the elastic cavity of column casing axial setting, including stiff end and expansion end, and arbitrary terminal surface looks sealing connection in the stiff end and the 1 inside axial of reservoir in the both ends face, and the expansion end is close to with baffle 103 one side looks sealing connection of terminal surface.
In the above scheme, the liquid storage cavity 101 is made of a material sensitive to deformation, and is adapted to different volume sizes in the process of adjusting the liquid reservoir 1; in the prior art, a liquid storage cavity is formed by a partition plate axially sealed with a cylindrical liquid storage device, and the leakage of a refrigerant can be caused due to the abrasion of a sealing element after long-term use; and because the baffle leads to the frictional force grow with the reservoir inner wall is sealed, feedback speed is slow in the in-process of volume adjustment, has still improved driving motor's consumption intangibly. Therefore, the liquid storage cavity 101 is made of the deformation material, so that the purposes of quick feedback of volume change and small loss of parts are achieved.
The invention further comprises the following steps: the partition 103 divides the inner space of the liquid reservoir 1 into a liquid storage cavity 101 and an adjustment cavity 102 arranged along the gravity direction, the liquid storage cavity 101 is arranged above the adjustment cavity 102, and the connecting part 1042 of the driving structure 104 is connected with the partition 103 and reciprocates in the adjustment cavity 102 to change the volume of the liquid storage cavity 101.
In the above scheme, since the refrigerant is changed into liquid after passing through the condenser 4, the liquid storage cavity 101 is arranged above the adjusting cavity 102, and the refrigerant flows into the bottom of the liquid storage cavity 101 by gravity for temporary storage; the volume of the reservoir 101 is varied by controlling the up and down movement of the diaphragm 103 by the extension and retraction of the connecting portion 1042 in the adjustment chamber.
The invention further comprises the following steps: the driving portion 1041 is a stepping motor, the connecting portion 1042 is a screw rod driven by the stepping motor, and a screw hole matched with the screw rod is arranged at the bottom of the liquid storage device 1, so that the stepping motor drives the screw rod to rotate to adjust the length of the screw rod extending into the adjusting cavity 102.
The invention further comprises the following steps: stock solution chamber 101 is a bellows that sets up along 1 axial of reservoir, the bellows outer wall sets up with the inner wall phase separation of reservoir 1, and the expansion end links to each other with baffle 103 and realizes reciprocating motion in 1 axial of reservoir.
The invention further comprises the following steps: the top of the liquid storage device 1 is provided with a liquid inlet 105 and a liquid outlet 106 which are connected with the liquid storage cavity 101, the liquid inlet 105 is connected with the condenser 4, the liquid outlet 106 is connected with the throttling device 2, and the refrigerant flowing out of the pipeline of the condenser 4 flows into the throttling device 2 through the liquid storage cavity 101.
In the above scheme, the throttling device 2 is preferably an electronic expansion valve, and when the compressor 3 operates at high frequency, the opening of the expansion valve is adjusted to be large, so that the requirement of the compressor on the flow rate during high-frequency operation can be met; when the compressor operates at low frequency, the flow rate can be reduced by reducing the opening degree of the expansion valve. The invention also provides a clothes dryer applying the heat pump system, which comprises a drying cylinder 7, a drying air duct 8 connecting an air inlet 701 and an air outlet 702 of the drying cylinder 7 and a heat pump system partially arranged in the drying air duct 8, wherein the evaporator 5 and the condenser 4 are arranged in the drying air duct 8, and the clothes dryer can control the flow of refrigerant in the heat pump system through the volume change of the liquid accumulator 1 so as to adjust the operation load of the heat pump system.
The invention further comprises the following steps: the drying cylinder 7 of the heat pump clothes dryer is provided with a clothes input opening 12, and a detector for detecting the content of water vapor is arranged in the drying cylinder 7 and used for judging whether the clothes are dried or not.
The invention further comprises the following steps: the evaporator 5 is also provided with a water storage and drainage device 6 for collecting and discharging condensed water generated by heat exchange in the drying pipeline 8.
The invention also provides a control method of the heat pump clothes dryer capable of adjusting the system load, the heat pump clothes dryer comprises a refrigerant reservoir with adjustable volume and a compressor for increasing the temperature and the pressure of the refrigerant, the control method adjusts the volume of the refrigerant reservoir according to the running frequency of the compressor of the heat pump clothes dryer, and controls the flow rate of the refrigerant in the heat pump system so as to adjust the running load of the system.
The control method comprises the following steps:
s1, starting a heat pump clothes dryer, and then executing a step S2;
s2, judging whether the heat pump clothes dryer executes a quick drying program, if so, executing a step S3, otherwise, executing a step S4;
s3, the compressor of the heat pump clothes dryer operates at high frequency, and then the step S5 is executed;
s4, running a compressor of the heat pump clothes dryer at a low frequency, and then executing a step S6;
s5, increasing the volume of a liquid storage device of the heat pump clothes dryer, and then executing the step S7;
s6, reducing the volume of a liquid accumulator of the heat pump clothes dryer, and then executing the step S7;
s7, judging whether the clothes are dry or not according to the water vapor content in the drying cylinder, if so, carrying out S8, and if not, carrying out S2;
and S8, finishing the operation of the heat pump clothes dryer.
In the control method, the corresponding adjustment can be carried out according to the specific type of the clothes dryer according to the different quantities and powers of the clothes dryer.
According to the control method, the quick drying program is included, the quick drying program executes high-frequency operation of the compressor, meanwhile, the accumulator volume is increased to reduce the load of the refrigerant on the heat pump system, then whether the clothes are dry or not is judged, if yes, the steps S1, S2, S3, S5, S7 and S8 are executed, and if not, the steps S1, S2, S3, S5 and S7 are executed, and the steps S2, S3, S5 and S7 are executed in a circulating mode until the clothes are dry.
In the above control method, when the rapid drying program is used, the volume of the variable volume accumulator 1 is increased under the drive of the screw by the stepping motor, and the opening degree of the electronic expansion valve is increased, so that the refrigerant can increase the evaporation load due to the increased space of the accumulator 1, and the increase speed of the condensation load is reduced, and the pressure load cannot rapidly increase. Thus, the compressor 3 can run at high frequency for a long time, the condensation of the evaporated steam is accelerated, and the drying speed is increased.
According to the control method, the method further comprises the following steps:
s1, starting a heat pump clothes dryer, and then executing a step S101;
s101, judging whether the heat pump clothes dryer is in high-temperature operation or not, if so, executing a step S2, otherwise, executing a step S3;
s2, judging whether the heat pump clothes dryer executes a quick drying program, if so, executing a step S3, otherwise, executing a step S4;
s3, the compressor of the heat pump clothes dryer operates at high frequency, and then the step S5 is executed;
s4, running a compressor of the heat pump clothes dryer at a low frequency, and then executing a step S6;
s5, increasing the volume of a liquid storage device of the heat pump clothes dryer, and then executing the step S7;
s6, reducing the volume of a liquid accumulator of the heat pump clothes dryer, and then executing the step S7;
s7, judging whether the clothes are dry according to the water vapor content in the drying cylinder, if so, carrying out S8, otherwise, carrying out S101;
and S8, finishing the operation of the heat pump clothes dryer.
According to the control method, the method further comprises a low energy consumption program: starting the heat pump clothes dryer, judging that the clothes dryer is in a high-temperature state, when a quick drying program is not executed, enabling the compressor to run at a low frequency, reducing the volume of an accumulator to increase the flow rate of refrigerant in the system, then judging whether the clothes are dry, if so, executing steps S1, S101, S2, S4, S6, S7 and S8, otherwise, executing steps S1, S101, S2, S4, S6 and S7 and circularly executing steps S101, S2, S4, S6 and S7 until the clothes are dry.
In the control method, when a low-energy-consumption program is used, the average running frequency of the compressor is low, the stepping motor drives the screw to reduce the volume of the liquid storage device, and the refrigerant in the liquid storage tank flows back to the refrigerating system. The opening degree of the expansion valve is reduced, so that the load of the compressor is increased even though the compressor is operated at a low frequency, and the temperature of the inlet cylinder is increased during drying.
According to the control method, the heat pump clothes dryer is started, the high-temperature state is judged, the compressor is enabled to run at high frequency, meanwhile, the capacity of the liquid storage device is increased to reduce the flow rate of refrigerant in the heat pump system, then whether clothes are dry or not is judged, if yes, steps S1, S101, S3, S5, S7 and S8 are executed, and if not, steps S1, S101, S3, S5 and S7 are executed, and steps S101, S3, S5 and S7 are executed in a circulating mode until clothes are dry.
In the control method, when the temperature of the system is not high, the compressor is enabled to operate at high frequency, the flow of the refrigerant is increased, the load is increased, and the temperature of the inlet cylinder is rapidly increased.
The invention has the beneficial effects that:
1. the heat pump system capable of adjusting the system load provided by the invention is provided with the liquid storage device with adjustable volume, the flow of the refrigerant is adjusted according to the system running condition, and the use efficiency of the heat pump clothes dryer is improved;
2. the liquid storage device with the adjustable volume is provided with the liquid storage cavity made of the deformation sensitive material, and is not in direct contact with the inner wall of the liquid storage device, so that the problem of loss of a sealing element of the liquid storage cavity in the prior art is solved;
3. the invention also provides a control method of the heat pump clothes dryer capable of adjusting the system load, which distributes the refrigerant flow by adjusting the volume of the liquid accumulator, adjusts the system load and realizes the quick drying and the low-energy consumption drying of clothes.
Drawings
Fig. 1 is a schematic structural view of a heat pump clothes dryer of the present invention.
Fig. 2 is a schematic view of the reservoir of the present invention when the volume is increased.
Fig. 3 is a schematic view showing the structure of the reservoir of the present invention when the volume is reduced.
Fig. 4 is a flowchart of a control method provided in embodiment 2 and embodiment 3 of the present invention.
The main components in the figure are: 1-reservoir, 101-stock solution chamber, 102-regulation chamber, 103-baffle, 104-drive structure, 1041-drive division, 1042-connecting portion, 105-inlet, 106-leakage fluid dram, 2-throttling arrangement, 3-compressor, 4-condenser, 5-evaporimeter, 6-storage drainage device, 7-drying cylinder, 701-air intake, 702-air outlet, 8-stoving wind channel, 9-filter screen, 10-fan, 11-auxiliary heating wire, 12-clothing input mouth.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
Example 1
In this embodiment, as shown in fig. 1 to 3, a heat pump system capable of adjusting a system load is provided, the heat pump system includes an evaporator 5, a compressor 3, a condenser 4, a liquid reservoir 1 and a throttling device 2, which are connected in sequence, the liquid reservoir 1 is a cylindrical shell, a partition plate 103 contacting with an inner wall of the cylindrical shell is axially arranged in the interior, one axial side of the partition plate 103 is provided with a liquid storage cavity 101, the other axial side of the partition plate is connected with a driving structure 104, and the partition plate 103 is made to axially reciprocate along the cylindrical shell, so that the volume of the liquid storage cavity 101 changes.
In this embodiment, as shown in fig. 2 and fig. 3, the driving structure 104 includes a driving portion 1041 disposed outside the bottom of the liquid reservoir 1 and a connecting portion 1042 connected to the bottom surface of the partition 103, where the driving portion 1041 controls the connecting portion 1042 to move axially inside the liquid reservoir 1, so as to achieve the reciprocating movement of the partition 103 along the axial direction of the liquid reservoir 1. The driving portion 1041 of the driving structure 104 is disposed outside the liquid reservoir 1, so that the volume of the liquid reservoir 1 has a larger adjustment space.
In this embodiment, as shown in fig. 2 and fig. 3, the liquid storage cavity 101 is an elastic cavity arranged along the axial direction inside the liquid storage device 1, and includes a fixed end and a movable end, the fixed end is connected with any one of the two end faces of the liquid storage device 1 in the axial direction, and the movable end is connected with the partition plate 103 in a sealing manner on one side of the end face. The liquid storage cavity 101 is made of a material sensitive to deformation and is suitable for different volume sizes in the process of adjusting the liquid storage device 1; in the prior art, a liquid storage cavity is formed by a partition plate axially sealed with a liquid storage device, and the leakage of a refrigerant can be caused due to the abrasion of a sealing element after long-term use; and because the baffle leads to the frictional force grow with the reservoir inner wall is sealed, feedback speed is slow in the in-process of volume adjustment, has still improved driving motor's consumption intangibly. Therefore, the liquid storage cavity 101 is made of the deformation material, so that the purposes of quick feedback of volume change and small loss of parts are achieved.
In this embodiment, as shown in fig. 2 and fig. 3, the partition plate 103 divides the inner space of the liquid reservoir 1 into a liquid storage cavity 101 and an adjustment cavity 102, the liquid storage cavity 101 is disposed above the adjustment cavity 102, and the connecting portion 1042 of the driving structure 104 is connected to the partition plate 103 and reciprocates in the adjustment cavity 102 along the axial direction, so that the volume of the liquid storage cavity 101 changes. The refrigerant is changed into liquid after passing through the condenser 4, the liquid storage cavity 101 is arranged above the adjusting cavity 102, and the refrigerant flows into the bottom of the liquid storage cavity 101 by utilizing gravity to be temporarily stored; the volume of the reservoir 101 is varied by controlling the up and down movement of the diaphragm 103 by the extension and retraction of the connecting portion 1042 in the adjustment chamber.
In this embodiment, as shown in fig. 2 and fig. 3, the driving portion 1041 is a stepping motor, the connecting portion 1042 is a screw rod driven by the stepping motor, and the bottom of the liquid reservoir 1 is provided with a screw hole matched with the screw rod, so that the stepping motor drives the screw rod to rotate to adjust the length of the screw rod extending into the adjusting cavity 102.
In this embodiment, as shown in fig. 2 and fig. 3, the liquid storage cavity 101 is a corrugated pipe disposed along the axial direction of the liquid storage device 1, the outer wall of the corrugated pipe is separated from the inner wall of the liquid storage device 1, and the movable end is connected to the partition plate 103 and reciprocates in the axial direction of the liquid storage device 1.
In this embodiment, as shown in fig. 2, the screw of the connecting portion 1042 is connected to the partition plate 3, the stepping motor drives the screw to rotate, the screw passes through the screw hole at the bottom of the liquid storage device 1, the length of the screw in the adjusting cavity 102 is shortened, the partition plate 3 descends, and meanwhile, the bellows of the liquid storage cavity 101 is lengthened, so that the volume of the liquid storage device 1 is increased.
In this embodiment, as shown in fig. 3, the screw of the connecting portion 1042 is connected to the partition plate 3, the stepping motor drives the screw to rotate, the screw passes through the screw hole at the bottom of the liquid storage device 1, the length of the screw in the adjusting cavity 102 is increased, the partition plate 3 rises, and the bellows of the liquid storage cavity 101 is compressed, so that the volume of the liquid storage device 1 is decreased.
In this embodiment, as shown in fig. 2 and fig. 3, a liquid inlet 105 and a liquid outlet 106 connected to the liquid storage cavity 101 are disposed at the top of the liquid storage device 1, the liquid inlet 105 is connected to the condenser 4, and the liquid outlet 106 is connected to the throttling device 2, so that the refrigerant flowing out from the pipeline of the condenser 4 flows into the throttling device 2 through the liquid storage cavity 101.
In this embodiment, as shown in fig. 1, the throttling device 2 is preferably an electronic expansion valve, and when the compressor 3 operates at a high frequency, the flow rate required by the high-frequency operation of the compressor can be met by adjusting the opening degree of the expansion valve to be larger; when the compressor operates at low frequency, the flow rate can be reduced by reducing the opening degree of the expansion valve.
In this embodiment, a clothes dryer using the heat pump system is further provided, which includes a drying cylinder 7, a drying air duct 8 connecting an air inlet 701 and an air outlet 702 of the drying cylinder 7, and a heat pump system partially disposed in the drying air duct 8, wherein the evaporator 5 and the condenser 4 are disposed in the drying air duct 8, and the clothes dryer can control a flow rate of a refrigerant in the heat pump system through a volume change of the liquid reservoir 1 to adjust an operation load of the heat pump system.
In this embodiment, the drying air duct 8 of the heat pump clothes dryer is sequentially provided with a drying cylinder 7, an air outlet 702, a filter screen 9, an evaporator 5, a condenser 4, a fan 10, and an auxiliary heating wire 11 from an air inlet 701 in an air flowing direction, wherein the evaporator 5 and the condenser 4 are heat exchange structures in a heat pump system, a refrigerant flows through the evaporator 5 to absorb waste heat of air flow after clothes drying, is compressed by a compressor 3 to raise temperature and pressure, and then exchanges heat with air flow in the drying air duct 8 after passing through the condenser 4 to raise temperature of the air flow passing through the condenser 4, then the air flow is guided into the air inlet of the drying cylinder by the fan 10, and the auxiliary heating wire 11 is added in the middle to supplement the temperature.
In this embodiment, as shown in fig. 1, the drying drum 7 of the heat pump clothes dryer is provided with a clothes input opening 12, and a detector for detecting the content of water vapor is arranged in the drying drum 7 for determining whether the clothes are completely dried. The evaporator 5 is also provided with a water storage and drainage device 6 for collecting and discharging condensed water generated by heat exchange in the drying pipeline 8.
In the embodiment, the control method of the heat pump clothes dryer capable of adjusting the system load comprises a rapid drying program of high-frequency operation of a compressor, the control method adjusts the volume of an accumulator according to the operating frequency of the compressor of the heat pump clothes dryer, and controls the flow rate of refrigerant in a heat pump system so as to adjust the operating load of the system. The control method comprises the following steps:
s1, starting a heat pump clothes dryer, and then executing a step S2;
s2, judging whether the heat pump clothes dryer executes a quick drying program, if so, executing a step S3, otherwise, executing a step S4;
s3, the compressor of the heat pump clothes dryer operates at high frequency, and then the step S5 is executed;
s4, running a compressor of the heat pump clothes dryer at a low frequency, and then executing a step S6;
s5, increasing the volume of a liquid storage device of the heat pump clothes dryer, and then executing the step S7;
s6, reducing the volume of a liquid accumulator of the heat pump clothes dryer, and then executing the step S7;
s7, judging whether the clothes are dry or not according to the water vapor content in the drying cylinder, if so, carrying out S8, and if not, carrying out S2;
and S8, finishing the operation of the heat pump clothes dryer.
In this embodiment, according to the control method, the amount and power of the clothes dryer can be adjusted according to the specific type of the clothes dryer.
In this embodiment, according to the above control method, the rapid drying program performs high frequency operation of the compressor, increases the accumulator volume to reduce the load of the refrigerant on the heat pump system, and then determines whether the laundry is dried, if so, performs steps S1, S2, S3, S5, S7, and S8, and if not, performs steps S1, S2, S4, S6, and S7 and performs steps S2, S4, S6, and S7 in a loop until the laundry is dried.
In the embodiment, in the above control method, when the rapid drying program is used, the volume of the variable-volume accumulator 1 is increased under the drive of the screw by the stepper motor, and the opening degree of the electronic expansion valve is increased, so that the refrigerant is accommodated in the accumulator 1 to be increased, and the evaporation load is increased while the condensing pressure load is not increased rapidly. Thus, the compressor 3 can run at high frequency for a long time, the condensation of the evaporated steam is accelerated, and the drying speed is increased.
Example 2
The implementation manner of the heat pump clothes dryer capable of adjusting the system load in the embodiment on hardware is the same as that in embodiment 1.
In the embodiment, a control method of a heat pump clothes dryer capable of adjusting system load is provided, which comprises a low energy consumption program, the control method adjusts the volume of an accumulator according to the operating temperature of the heat pump clothes dryer and the operating frequency of a compressor, and controls the flow rate of refrigerant in a heat pump system so as to adjust the operating load of the system. The control method comprises the following steps:
s1, starting a heat pump clothes dryer, and then executing a step S101;
s101, judging whether the heat pump clothes dryer is in high-temperature operation or not, if so, executing a step S2, otherwise, executing a step S3;
s2, judging whether the heat pump clothes dryer executes a quick drying program, if so, executing a step S3, otherwise, executing a step S4;
s3, the compressor of the heat pump clothes dryer operates at high frequency, and then the step S5 is executed;
s4, running a compressor of the heat pump clothes dryer at a low frequency, and then executing a step S6;
s5, increasing the volume of a liquid storage device of the heat pump clothes dryer, and then executing the step S7;
s6, reducing the volume of a liquid accumulator of the heat pump clothes dryer, and then executing the step S7;
s7, judging whether the clothes are dry according to the water vapor content in the drying cylinder, if so, carrying out S8, otherwise, carrying out S101;
and S8, finishing the operation of the heat pump clothes dryer.
In this embodiment, according to the control method, the selection range of the high temperature is different according to the different quantities and powers of the dryers, and the selection range can be adjusted according to the specific types of the dryers.
In this embodiment, the low energy consumption procedure is as follows: starting the heat pump clothes dryer, judging that the clothes dryer is in a high-temperature state, when a quick drying program is not executed, enabling the compressor to run at a low frequency, reducing the volume of an accumulator to increase the flow rate of refrigerant in the system, then judging whether the clothes are dry, if so, executing steps S1, S101, S2, S4, S6, S7 and S8, otherwise, executing steps S1, S101, S2, S4, S6 and S7, and circularly executing steps S101, S2, S4, S6 and S7 until the clothes are dry.
In this embodiment, when a low-energy-consumption program is used, the average operating frequency of the compressor is low, and the stepper motor drives the screw rod to reduce the volume of the liquid storage device, so that the refrigerant in the liquid storage device flows back to the refrigeration system. The opening degree of the expansion valve is reduced, so that the load of the compressor is increased even though the compressor is operated at a low frequency, and the temperature of the inlet cylinder is increased during drying.
Example 3
The implementation manner of the heat pump clothes dryer capable of adjusting the system load in the embodiment on hardware is the same as that in embodiment 1.
In the embodiment, a control method of a heat pump clothes dryer capable of adjusting system load is provided, the control method adjusts the volume of an accumulator according to the operation temperature of the heat pump clothes dryer and the operation frequency of a compressor, and controls the flow rate of refrigerant in a heat pump system so as to adjust the operation load of the system. The control method comprises the following steps:
s1, starting a heat pump clothes dryer, and then executing a step S101;
s101, judging whether the heat pump clothes dryer is in high-temperature operation or not, if so, executing a step S2, otherwise, executing a step S3;
s2, judging whether the heat pump clothes dryer executes a quick drying program, if so, executing a step S3, otherwise, executing a step S4;
s3, the compressor of the heat pump clothes dryer operates at high frequency, and then the step S5 is executed;
s4, running a compressor of the heat pump clothes dryer at a low frequency, and then executing a step S6;
s5, increasing the volume of a liquid storage device of the heat pump clothes dryer, and then executing the step S7;
s6, reducing the volume of a liquid accumulator of the heat pump clothes dryer, and then executing the step S7;
s7, judging whether the clothes are dry according to the water vapor content in the drying cylinder, if so, carrying out S8, otherwise, carrying out S101;
and S8, finishing the operation of the heat pump clothes dryer.
In this embodiment, according to the control method, the selection range of the high temperature is different according to the different quantities and powers of the dryers, and the selection range can be adjusted according to the specific types of the dryers.
In this embodiment, according to the control method, the heat pump dryer is turned on, the heat pump dryer is determined not to be in a high temperature state, the compressor is operated at a high frequency, the volume of the accumulator is increased to reduce the flow rate of the refrigerant in the heat pump system, and then whether the laundry is dried is determined, if yes, steps S1, S101, S3, S5, S7 and S8 are performed, and if not, steps S1, S101, S3, S5 and S7 are performed, and steps S101, S3, S5 and S7 are performed in a circulating manner until the laundry is dried.
In this embodiment, when the temperature of the system is not high, the compressor is operated at a high frequency, and the flow rate of the refrigerant is increased to increase the load, so that the temperature of the inlet cylinder is rapidly increased.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included in the scope of the present invention.
Claims (7)
1. A heat pump system capable of adjusting system load comprises an evaporator (5), a compressor (3), a condenser (4) and a throttling device (2) which are sequentially connected, and is characterized in that the heat pump system is further provided with a liquid storage device (1), a partition plate (103) which reciprocates to change the volume of a liquid storage cavity (101) is arranged in the liquid storage device (1), and the liquid storage device (1) is connected in series with the heat pump system to adjust the flow of a refrigerant in the heat pump system;
the liquid storage device (1) is a cylindrical shell, the liquid storage cavity (101) is a corrugated pipe which is arranged along the axial direction of the liquid storage device (1) and comprises a fixed end and a movable end, the outer wall of the corrugated pipe is separated from the inner wall of the liquid storage device (1), and the movable end is hermetically connected with one side, close to the fixed end, of the partition plate (103);
the heat pump system adjusts the volume of the liquid storage device according to the running frequency of the dryer compressor, and controls the flow of the refrigerant in the heat pump system so as to adjust the running load of the system; the method specifically comprises the following steps:
s1, turning on the heat pump clothes dryer, and then executing the step S2;
s2, judging whether the heat pump clothes dryer executes the quick drying program, if so, executing a step S3, otherwise, executing a step S4;
s3, the compressor of the heat pump clothes dryer runs at high frequency, and then step S5 is executed;
s4, the compressor of the heat pump clothes dryer runs at low frequency, and then step S6 is executed;
s5, increasing the volume of the liquid storage device of the heat pump clothes dryer, and then executing the step S7;
s6, reducing the volume of the liquid storage device of the heat pump clothes dryer, and then executing the step S7;
s7, judging whether the clothes are dry according to the water vapor content in the drying cylinder, if so, carrying out S8, otherwise, carrying out S2;
and S8, finishing the operation of the heat pump clothes dryer.
2. The heat pump system capable of adjusting the system load according to claim 1, wherein one side of the partition (103) is provided with a sealed reservoir (101), and the other side of the partition is connected with a driving structure (104), the driving structure (104) comprises a driving part (1041) arranged outside the bottom of the reservoir (1) and a connecting part (1042) connected with the bottom surface of the partition (103), and the driving part (1041) controls the connecting part (1042) to extend and retract inside the reservoir (1) to realize the reciprocating motion of the partition (103).
3. The system load adjustable heat pump system according to claim 2, wherein the partition (103) divides the inner space of the reservoir (1) into a reservoir chamber (101) and a regulation chamber (102) arranged along the direction of gravity, the reservoir chamber (101) is arranged above the regulation chamber (102), and the connecting portion (1042) of the driving structure (104) is connected to the partition (103) and reciprocates in the regulation chamber (102) to change the volume of the reservoir chamber (101).
4. A clothes dryer using the heat pump system according to any one of claims 1 to 3, comprising a drying cylinder (7), a drying air duct (8) connecting an air inlet (701) and an air outlet (702) of the drying cylinder (7), and a heat pump system partially arranged in the drying air duct (8), wherein the evaporator (5) and the condenser (4) are arranged in the drying air duct (8), and the clothes dryer is characterized in that the flow rate of the refrigerant in the heat pump system can be controlled by the volume change of the liquid reservoir (1) to adjust the operation load of the heat pump system.
5. A control method of a heat pump clothes dryer capable of adjusting system load,
the heat pump clothes dryer comprises a refrigerant accumulator with adjustable volume and a compressor for increasing temperature and pressure of refrigerant,
the control method is characterized in that the control method adjusts the volume of the liquid storage device according to the running frequency of the compressor of the heat pump clothes dryer, and controls the flow rate of the refrigerant in the heat pump system so as to adjust the running load of the system;
the control method comprises the following steps:
s1, turning on the heat pump clothes dryer, and then executing the step S2;
s2, judging whether the heat pump clothes dryer executes the quick drying program, if so, executing a step S3, otherwise, executing a step S4;
s3, the compressor of the heat pump clothes dryer runs at high frequency, and then step S5 is executed;
s4, the compressor of the heat pump clothes dryer runs at low frequency, and then step S6 is executed;
s5, increasing the volume of the liquid storage device of the heat pump clothes dryer, and then executing the step S7;
s6, reducing the volume of the liquid storage device of the heat pump clothes dryer, and then executing the step S7;
s7, judging whether the clothes are dry according to the water vapor content in the drying cylinder, if so, carrying out S8, otherwise, carrying out S2;
and S8, finishing the operation of the heat pump clothes dryer.
6. The control method of the system load adjustable heat pump clothes dryer according to claim 5, characterized in that the method comprises the steps of:
s1, starting the heat pump clothes dryer, and then executing the step S101;
s101, judging whether the heat pump clothes dryer is in high-temperature operation, if so, executing a step S2, otherwise, executing a step S3;
s2, judging whether the heat pump clothes dryer executes the quick drying program, if so, executing a step S3, otherwise, executing a step S4;
s3, the compressor of the heat pump clothes dryer runs at high frequency, and then step S5 is executed;
s4, the compressor of the heat pump clothes dryer runs at low frequency, and then step S6 is executed;
s5, increasing the volume of the liquid storage device of the heat pump clothes dryer, and then executing the step S7;
s6, reducing the volume of the liquid storage device of the heat pump clothes dryer, and then executing the step S7;
s7, judging whether the clothes are dry according to the water vapor content in the drying cylinder, if so, carrying out S8, otherwise, carrying out S101;
and S8, finishing the operation of the heat pump clothes dryer.
7. The control method of the heat pump clothes dryer capable of adjusting the system load according to claim 5 or 6, wherein the control method comprises a quick drying process, the quick drying process comprises a step S3 of performing high-frequency operation of the compressor, a step S5 of increasing the accumulator volume to reduce the load of the refrigerant on the heat pump system, a step S7 of judging whether the clothes are dry is performed, if yes, a step S8 is performed, and if not, S3, S5 and S7 are performed in a circulating mode until the clothes are dry.
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| CN116748469B (en) * | 2023-08-11 | 2023-10-20 | 秦皇岛旌铸德科技有限公司 | Steam dewaxing kettle |
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| EP2540905B1 (en) * | 2011-06-29 | 2015-02-25 | Electrolux Home Products Corporation N.V. | A laundry dryer with heat pump system |
| CN103882665B (en) * | 2012-12-21 | 2018-03-30 | 青岛海尔洗衣机有限公司 | A kind of control method and heat pump clothes dryer of heat pump clothes dryer frequency-changeable compressor |
| CN105316920B (en) * | 2014-06-19 | 2019-01-25 | 杭州三花研究院有限公司 | Dryer and dryer heat pump system and its control method |
| CN105466078A (en) * | 2014-08-18 | 2016-04-06 | 青岛海尔洗衣机有限公司 | Heat pump system, washing-drying integrated machine and clothes dryer |
| CN105839376B (en) * | 2015-01-12 | 2020-01-24 | 青岛海尔洗衣机有限公司 | Control method for variable-frequency heat pump clothes dryer |
| CN104695193A (en) * | 2015-02-12 | 2015-06-10 | 珠海格力电器股份有限公司 | Heat pump clothes dryer and control method thereof |
| CN106482303B (en) * | 2016-11-25 | 2022-05-17 | 广州华凌制冷设备有限公司 | Air conditioner and refrigeration control method thereof |
| CN106524276A (en) * | 2016-12-06 | 2017-03-22 | 北京盛公达新能源科技有限公司 | Heat storage type hydrothermal combined supply control system and control method for air source heat pump |
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Effective date of registration: 20210902 Address after: Room 221, management committee of Sino German ecological park, 2877 Tuanjie Road, Huangdao District, Qingdao, Shandong 266510 Applicant after: QINGDAO HAIER WASHING ELECTRIC APPLIANCES Co.,Ltd. Applicant after: Haier Smart Home Co., Ltd. Address before: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao Applicant before: QINGDAO HAIER DRUM WASHING MACHINE Co.,Ltd. |
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