CN111676678A - Ventilation assembly and heat pump clothes dryer - Google Patents
Ventilation assembly and heat pump clothes dryer Download PDFInfo
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- CN111676678A CN111676678A CN202010431219.2A CN202010431219A CN111676678A CN 111676678 A CN111676678 A CN 111676678A CN 202010431219 A CN202010431219 A CN 202010431219A CN 111676678 A CN111676678 A CN 111676678A
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- air outlet
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- 238000009423 ventilation Methods 0.000 title claims abstract description 24
- 238000001035 drying Methods 0.000 claims abstract description 103
- 238000007789 sealing Methods 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 13
- 239000003507 refrigerant Substances 0.000 description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000007791 dehumidification Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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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
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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
- D06F58/02—Domestic laundry dryers having dryer drums rotating about a horizontal axis
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
Abstract
The invention provides a ventilation assembly and a heat pump clothes dryer, and relates to the technical field of clothes dryers. The air exchange assembly is arranged on an air flow channel between a hot air outlet of a drying barrel of the clothes dryer and an air inlet of the evaporator and comprises a body, the body is arranged on the air flow channel, and an air inlet hole is formed in the body; a first cover plate mounted on the body; the output end of the driver is connected with the first cover plate to drive the first cover plate to move, so that the air inlet hole is opened or closed, and when the air inlet hole is opened, cold air enters the air flow channel through the air inlet hole. The subassembly of taking a breath can be with cold wind leading-in dry clothing passageway in, avoid the compressor overload to open repeatedly and stop.
Description
Technical Field
The invention relates to the technical field of clothes dryers, in particular to a ventilation assembly and a heat pump clothes dryer.
Background
A heat pump clothes dryer is a common household appliance for drying clothes.
The heat pump clothes dryer comprises a refrigerant circulating system and an air circulating system; the refrigerant circulating system comprises a compressor, a condenser and an evaporator, and the air circulating system comprises a drying barrel and a fan. When the heat pump clothes dryer works, the refrigerant is subjected to gas-liquid two-phase change in the refrigerant circulating system to absorb or release heat, wherein the refrigerant is condensed at the condenser to release heat; the fan drives air in the air duct to pass through the condenser, the air absorbs heat to be heated and then enters the drying barrel, the heated air and clothes are subjected to heat exchange, the temperature of the clothes is increased and water vapor is released, the temperature of the air is reduced, and the humidity of the air is increased; the air after temperature rise and humidification is discharged out of the drying barrel through a hot air outlet of the drying barrel and enters the evaporator from an evaporator inlet for temperature reduction and dehumidification; the air after temperature reduction and dehumidification is heated up by the condenser in cycles, and clothes are dried.
However, when the temperature of the air flow discharged from the drying tub rises, for example, at the later stage of drying, the humidity of the laundry to be dried decreases, the amount of heat required for drying the laundry decreases, the temperature of the air discharged from the drying tub rises accordingly, and the compressor is in a high-load operation state, and the compressor is stopped or intermittently operated, and the drying speed is low.
Disclosure of Invention
The invention provides a ventilation assembly and a heat pump clothes dryer, which are used for realizing rapid clothes drying.
The invention provides a ventilation assembly, which is arranged on an air flow channel between a hot air outlet of a drying barrel of a clothes dryer and an air inlet of an evaporator, and comprises: the body is arranged on the airflow channel and is provided with an air inlet; a first cover plate mounted on the body; the output end of the driver is connected with the first cover plate to drive the first cover plate to move, so that the air inlet hole is opened or closed, and when the air inlet hole is opened, cold air enters the air flow channel through the air inlet hole.
The ventilation assembly as described above, wherein the body has an air outlet, the body is provided with a second cover plate, the driver is further connected to the second cover plate to drive the second cover plate to move, so as to open or close the air outlet, and when the air outlet is opened, the hot air in the air flow channel is discharged through the air outlet.
The ventilation assembly as described above, wherein the body includes a mounting plate mounted on the air flow channel and a first wall plate disposed on the mounting plate toward an inner side of the air flow channel, the first wall plate being configured to receive hot air discharged from the hot air outlet of the drying tub; the air inlet hole and the air outlet hole are arranged on the mounting plate side by side, and the air outlet hole is located at one side, close to the first wall plate, of the air inlet hole.
The ventilation assembly as described above, wherein the area of the air outlet hole is larger than the area of the air inlet hole.
The ventilation assembly as described above, wherein the area of the first cover plate is larger than the area of the air inlet hole, and a first sealing member is disposed on a surface of the first cover plate facing the body, and the first sealing member is used for sealing the air inlet hole.
The ventilation assembly as described above, wherein one side of the first cover plate has a first rotating shaft rotatably connected to the body; one side of the second cover plate is provided with a second rotating shaft which is rotatably connected to the body, and the driver is used for simultaneously driving the first rotating shaft and the second rotating shaft to rotate towards the inner side of the airflow channel so as to simultaneously open the air inlet hole and the air outlet hole.
The air exchange assembly as described above, wherein the first rotating shaft is located at a side of the air inlet hole away from the air outlet hole, and the second rotating shaft is located at a side of the air outlet hole away from the air inlet hole; and a connecting rod assembly is arranged between the first rotating shaft and the second rotating shaft, and the input end of the connecting rod assembly is connected with the output end of the driver.
The ventilation assembly as described above, wherein the connecting rod assembly includes a third rotating shaft connected to the body, and a first connecting rod and a second connecting rod connected to an end surface of the third rotating shaft, and the third rotating shaft is located between the air inlet hole and the air outlet hole; one end of the first connecting rod, which is far away from the third rotating shaft, is connected with the end face of the first rotating shaft, and one end of the second connecting rod, which is far away from the third rotating shaft, is connected with the end face of the second rotating shaft; the output end of the driver is detachably connected with the third rotating shaft to drive the third rotating shaft to rotate, so that the first connecting rod and the second connecting rod are driven to move, the first rotating shaft and the second rotating shaft are simultaneously pushed, and the air inlet hole and the air outlet hole are simultaneously opened.
The present invention provides a heat pump clothes dryer, comprising: a drying tub, an evaporator, and the air exchange assembly; the drying barrel is provided with a hot air outlet, and the evaporator is provided with an air inlet; an air flow channel is arranged between a hot air outlet of the drying barrel and an air inlet of the evaporator, the air flow channel is provided with a mounting hole, and the air exchange assembly is arranged at the mounting hole.
The heat pump clothes dryer comprises a first section and a second section which are communicated, wherein one end of the first section, which is far away from the second section, is communicated with a hot air outlet of the drying barrel, and one end of the second section, which is far away from the first section, is communicated with an air inlet of the evaporator; the first section extends along the direction perpendicular to the axis of the drying barrel, the second section extends along the direction parallel to the axis of the drying barrel, and the mounting hole is formed in the joint of the first section and the second section.
According to the air exchange assembly and the heat pump clothes dryer provided by the invention, the air inlet assembly is arranged on the air flow channel between the hot air outlet of the drying barrel and the air inlet of the evaporator, and comprises a body, a first cover plate and a driver for driving the first cover plate to move; wherein, the body is provided with an air inlet hole penetrating through the channel; when the first cover plate closes the air inlet hole, the channel is in a closed state; when the driver drives the first cover plate to move and open the air inlet, the air flow channel is communicated with the outside through the air inlet, at the moment, partial hot air discharged from a hot air outlet of the drying barrel can flow to the outside through the air inlet, the flow of the hot air flowing to the evaporator is reduced, namely, the load of the compressor is reduced, meanwhile, low-temperature air in the outside, which is lower than the hot air temperature, can enter the air flow channel through the air inlet, the low-temperature air is mixed with the hot air, the air flow temperature flowing to the evaporator is reduced, the load of the compressor is also reduced, the compressor is prevented from being stopped, and the clothes drying speed.
Drawings
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, and it is to be understood that the detailed description set forth herein is merely illustrative and explanatory of the present invention and is not restrictive of the invention as claimed below.
FIG. 1 is a schematic diagram of a part of a heat pump clothes dryer provided by the present invention;
FIG. 2 is a schematic view of the front support and breather assembly of FIG. 1;
FIG. 3 is a schematic structural view of portion A of FIG. 2;
FIG. 4 is a first schematic view illustrating a driving structure of the ventilation assembly shown in FIGS. 2 and 3;
FIG. 5 is a second schematic view illustrating a driving structure of the ventilation assembly shown in FIGS. 2 and 3;
FIG. 6 is a schematic diagram of a part of the structure of the heat pump clothes dryer provided by the present invention;
FIG. 7 is a schematic diagram of the heat pump assembly of FIG. 6;
FIG. 8 is a schematic diagram of a third embodiment of the heat pump clothes dryer according to the present invention;
fig. 9 is a schematic structural view of the rear side plate in fig. 8.
Description of reference numerals:
10: drying the barrel; 11: a hot air outlet;
20: a circulation fan;
30: a heat pump assembly; 31: a compressor; 32: a condenser; 33: an evaporator;
41: a first portion; 411: a first stage; 412: a second stage; 42: a second portion; 43: a third portion;
50: a first filter;
60: a front support; 61: a first through hole; 62: a second through hole;
71: a rear side plate; 711: an air inlet hole;
81: a body; 811: mounting a plate; 812: a first wall panel; 813: a second wall panel; 82: a first cover plate; 821: a first rotating shaft; 83: a second cover plate; 831: a second rotating shaft; 84: a third rotating shaft; 85: a first link; 86: a second link; 87: a cavity; 88: an air inlet; 89: and an air outlet.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, and it is to be understood that the detailed description set forth herein is merely illustrative and explanatory of the present invention and is not restrictive of the invention as claimed below.
When the heat pump clothes dryer works, a refrigerant generates gas-liquid two-phase change in a refrigerant circulating system to absorb or release heat, wherein the refrigerant is condensed at the condenser to release heat; the fan drives air in the air duct to pass through the condenser, the air absorbs heat to be heated and then enters the drying barrel, the heated air and clothes are subjected to heat exchange, the temperature of the clothes is increased and water vapor is released, the temperature of the air is reduced, and the humidity of the air is increased; the fan continuously drives the air to flow, and the air is cooled and dehumidified by the evaporator; the air after temperature reduction and dehumidification is heated up by the condenser in cycles, and clothes are dried. The temperature of the air flow as it passes through the evaporator and the condenser is understood to be the ambient temperature of the evaporator and the condenser. When the temperature of the airflow discharged from the hot air outlet of the clothes drying barrel rises, for example, in the later stage of clothes drying, in an over-drying state, or when the temperature of the airflow entering the drying barrel rises, the temperature of the airflow discharged from the hot air outlet of the drying barrel correspondingly rises, the load of the compressor becomes high, the compressor can be continuously started and stopped, and the clothes drying speed is low.
In view of the above, the present invention may consider that the cooling assembly is disposed on the airflow channel between the hot air outlet of the drying tub and the evaporator, and is used to reduce the temperature of the airflow flowing to the evaporator and the condenser, so that the temperature of the airflow meets the working temperature range of the evaporator and the condenser, and the compressor can be in a high-efficiency working state, thereby avoiding the compressor from being stopped.
Fig. 1 is a schematic partial structure diagram of a heat pump clothes dryer according to a first embodiment of the present invention, fig. 2 is a schematic structural diagram of a front support and ventilation assembly in fig. 1, fig. 3 is a schematic structural diagram of a portion a in fig. 2, fig. 4 is a schematic structural diagram of a first driving structure of the ventilation assembly in fig. 2 and 3, fig. 5 is a schematic structural diagram of a second driving structure of the ventilation assembly in fig. 2 and 3, fig. 6 is a schematic structural diagram of a second part of the heat pump clothes dryer according to the present invention, fig. 7 is a schematic structural diagram of a heat pump assembly in fig. 6, fig. 8 is a schematic structural diagram of a third part of the heat pump clothes dryer according to the present invention, and fig. 9 is a schematic structural diagram of a rear side plate in fig. 8, please refer to fig. 1 to 9, the heat pump clothes dryer may include a housing, and a drying tub 10, a circulation fan 20.
The heat pump module 30 may be disposed at any position of the outer circumference of the drying tub 10, and considering that the heat pump module 30 is heavy, the heat pump module 30 may be disposed at the bottom side of the drying tub 10 to prevent dropping due to the loose support of the heat pump module 30.
The heat pump assembly 30 includes a compressor 31, a condenser 32, an evaporator 33, and a drying duct; the two ends of the drying air duct are respectively connected with the barrel opening and the barrel bottom of the drying barrel 10, the barrel opening of the drying barrel 10 is a hot air outlet 11, and the barrel bottom of the drying barrel 10 is provided with a hot air inlet communicated with the drying air duct; the circulating fan 20, the condenser 32 and the evaporator 33 are positioned in the clothes drying air duct, the circulating fan 20 is used for driving air flow to flow in the clothes drying air duct, and when the heat pump assembly 30 is started, refrigerant in the heat pump assembly 30 is subjected to heat absorption and evaporation in the evaporator 33, so that the air flow can be cooled at the evaporator 33 and condensed water is separated out, the air flow is dried, and a water receiving disc can be arranged below the evaporator 33 and used for storing the condensed water; the refrigerant within the heat pump assembly 30 exothermically condenses at the condenser 32 so that the air flow may endothermically warm at the condenser 32.
The drying duct may be divided into a first portion 41 between the hot wind outlet 11 of the drying tub 10 and the evaporator 33, a second portion 42 where the evaporator 33, the condenser 32 and the circulation fan 20 are disposed, a third portion 43 between the circulation fan 20 and the bottom of the drying tub 10, and a fourth portion formed by the drying tub 10. That is, the airflow discharged from the hot wind outlet 11 of the drying tub 10 may flow along the first portion 41 until entering the second portion 42, the airflow entering the second portion 42 may be dehumidified and heated and then enter the third portion 43, and the airflow entering the third portion 43 may enter the drying tub 10 through the hot wind inlet at the bottom of the drying tub 10.
According to the heat pump dryer structure, the structure of the drying duct is different between the respective portions, and illustratively, the first portion 41 may be formed on a front support 60 of the heat pump dryer, the front support 60 further having a support portion for supporting the hot wind outlet 11 of the drying tub 10, the first portion 41 having a first through hole 61 communicating with the hot wind outlet 11 of the drying tub 10 and a second through hole 62 communicating with the inlet of the evaporator 33. The fourth part may be formed by the rear side plate 71 of the casing and an air duct cover plate, the air duct cover plate is disposed on a side of the rear side plate 71 of the casing facing away from the drying tub 10, an air inlet hole 711 is disposed on the rear side plate 71 of the casing corresponding to the hot air inlet, and the air inlet hole 711 may be disposed along the circumferential direction of the drying tub 10.
When the heat pump clothes dryer works, the heat pump assembly 30 is started, the high-temperature and high-pressure refrigerant discharged from the air outlet of the compressor 31 releases heat and condenses at the condenser 32, the air flow heat absorption temperature at the position of the condenser 32 is increased, the cooled refrigerant absorbs heat and evaporates through the evaporator 33, the air flow heat release temperature at the position of the evaporator 33 is reduced, and then the refrigerant enters the compressor 31 from the air inlet of the compressor 31 to perform the next cycle. Thus, when the air discharged from the hot air outlet 11 of the drying tub 10 passes through the evaporator 33, the water vapor in the air can be cooled and condensed to achieve the purpose of dehumidification, and the condensed water can be accumulated in the water pan at the lower side of the evaporator 33; the dehumidified drying airflow is then heated by the condenser 32, and the heated airflow enters the drying tub 10 through the hot air inlet at the bottom of the drying tub 10 to heat and dry the clothes.
In the later stage of drying, the temperature of the air flow discharged from the drying barrel 10 is high, the load of the compressor 31 is correspondingly increased, and in order to avoid frequent start and stop of the compressor 31, the temperature of the air flow entering the evaporator 33 and the condenser 32 can be reduced by the heat pump clothes dryer. For convenience of explanation, a portion of the drying duct between the hot wind outlet 11 of the drying tub 10 and the air inlet of the evaporator 33 is referred to as an air flow passage, i.e., a first portion 41 in fig. 3.
The present embodiment provides a ventilation assembly, which is installed on an air flow channel between a hot air outlet 11 of a drying tub 10 and an air inlet of an evaporator 33, and includes: a body 81, wherein the body 81 is arranged on the airflow channel, and an air inlet hole 88 is arranged on the body 81; a first cover 82, the first cover 82 being mounted on the body 81; and the output end of the driver is connected with the first cover plate 82 to drive the first cover plate 82 to move, so that the air inlet hole 88 is opened or closed, and when the air inlet hole 88 is opened, cold air enters the air flow channel through the air inlet hole 88.
Specifically, the air flow path is a portion of the drying duct between the hot wind outlet 11 of the drying tub 10 and the air inlet of the evaporator 33, that is, the first portion 41 may be formed on the front support 60 of the heat pump dryer. The first portion 41 has a first through hole 61 communicating with the hot wind outlet 11 of the drying tub 10 and a second through hole 62 communicating with the inlet of the evaporator 33.
The front support 60 is further provided with a plurality of support parts for supporting the hot wind outlet 11 of the drying tub 10, and the plurality of support parts may be located at the same side or both sides of the first through hole 61. In consideration of the supporting stability of the hot air outlet 11 of the drying tub 10, a plurality of supporting parts may be symmetrically disposed at both sides of the first through hole 61, and the first through hole 61 is located at a lower side of the hot air outlet 11 of the drying tub 10, that is, with a vertical plane passing through the axis of the drying tub 10 as a first plane, the first through hole 61 may intersect the first plane or the first through hole 61 may be symmetrically disposed with respect to the first plane.
The front support 60 is also connected to a mounting portion to which the body 81 can seal. The mounting portion may be a through-hole structure provided on the airflow path as long as the first cover plate 82 can be stably mounted.
The body 81 has an air inlet hole 88 for introducing cold air into the air flow passage. It is to be noted that the cool wind herein refers to an air current having a temperature lower than that of the air current discharged at the hot wind outlet 11 of the drying tub 10. The cool air may refer to air outside the heat pump dryer housing, air inside the heat pump dryer housing, or low temperature air flow discharged via the heat exchange device. For example, the cool air cooled and dehumidified by the evaporator 33 in the airflow channel may be reintroduced into the airflow channel through the air inlet holes 88.
Wherein, on the side of the airflow channel that is located at the air inlet of the circulating fan 20, the air pressure is negative, and on the side of the air outlet of the circulating fan 20, the air pressure is positive, that is, the negative pressure is larger on the side of the first portion 41 that is closer to the evaporator 33, so that the air inlet hole 88 can be disposed at the end of the first portion 41 that is closer to the evaporator 33 for facilitating the external cold air to enter the airflow channel.
The cold air enters the airflow channel, the air quantity in the airflow channel is increased, part of hot air can be discharged through the assembly gap of the airflow channel due to low tightness of the airflow channel of the heat pump clothes dryer, part of hot air can also be discharged outwards through the air inlet hole 88, and the air inlet hole 88 can realize the air inlet and exhaust functions at the same time.
The ventilation assembly provided by the embodiment can introduce external cold air into the air flow channel, and simultaneously discharge partial hot air discharged from the drying barrel 10, so that the temperature of the air flow flowing to the evaporator 33 and the condenser 32 is reduced, and the compressor 31 is prevented from being started and stopped frequently.
Further, hot air can not be discharged from the air inlet holes 88, namely, the front support 60 can be provided with air outlet holes 89, the front support 60 is positioned on the rear side wall of the drying barrel 10, the front side wall of the front support 60, which deviates from the drying barrel 10, and the connecting side wall between the rear side wall and the front side wall can be provided with air outlet holes 89, and the positions of the air outlet holes 89 are not influenced by air pressure.
Optionally, the air outlet 89 may also be disposed on the body 81, the body 81 is provided with a second cover 83, and the driver is further connected to the second cover 83 to drive the second cover 83 to move, so as to open or close the air outlet 89, and when the air outlet 89 is opened, the hot air in the air flow channel is discharged through the air outlet 89.
The number of the drivers may be two, and the drivers respectively drive the first cover plate 82 and the second cover plate 83 to move. Because the first cover plate 82 and the second cover plate 83 are both arranged on the body 81 in the embodiment, the distance between the first cover plate 82 and the second cover plate 83 is short, the number of the drivers can be one, and one driver drives the first cover plate 82 and the second cover plate 83 to move so as to open or close the air inlet hole 88 and the air outlet hole 89 simultaneously.
The actuator may be a motor, a cylinder, etc. according to the movement pattern of the first cover 82 and the second cover 83.
Further, the first portion 41 of the airflow passage on the front support 60 may be integrally provided, for example, the first portion 41 may be arc-shaped; the first portion 41 may also be provided in a sectional manner, for example, it may include a first section 411 and a second section 412, the first section 411 extends along a direction perpendicular to the axis of the drying tub 10, the second section 412 extends along a direction parallel to the axis of the drying tub 10, and the first section 411 and the second section 412 are both provided to fit the housing of the heat pump clothes dryer, so that the space in the housing of the heat pump clothes dryer can be effectively utilized.
The exit aperture 89 may be located at the first section 411, the second section 412, or the intersection of the first section 411 and the second section 412.
To facilitate the hot wind discharging from the air flow channel, the body 81 includes a mounting plate 811 mounted on the air flow channel and a first wall 812 provided at the mounting plate 811 toward the inside of the air flow channel, the first wall 812 for receiving the hot wind discharged from the hot wind outlet 11 of the drying tub 10; the inlet holes 88 and the outlet holes 89 are arranged side by side on the mounting plate 811, and the outlet holes 89 are located on the side of the inlet holes 88 near the first wall plate 812.
At this time, the first wall plate 812 may be disposed along a radial direction of the air flow passage, the air outlet holes 89 are disposed at a side of the first wall plate 812 facing the incoming hot air, and the air inlet holes 88 are disposed at a side of the air outlet holes 89 facing away from the first wall plate 812.
When the heat pump dryer is operated, hot wind discharged from the hot wind outlet 11 of the drying tub 10 may impinge on the first wall 812, and a portion of the hot wind impinging on the first wall 812 may flow along the first wall 812 and be discharged from the outlet hole 89. And the air inlet hole 88 at one side of the air outlet hole 89 can introduce cold air into the air flow passage by the negative pressure of the circulating fan 20.
When the air outlet holes 89 are provided in the first section 411 or the second section 412, the first wall 812 may be provided in a radial direction perpendicular to the wall surface of the gas flow passage as long as the first wall 812 does not block the gas flow passage. When the air outlet 89 is disposed at the intersection of the first section 411 and the second section 412, the first wall 812 may be disposed at different positions according to the extending direction of the first section 411, referring to fig. 3, the body 81 may include a first wall 812, a second wall 813, and a third wall connecting the first wall 812 and the second wall 813, and the first wall 812, the second wall 813, and the third wall are attached to the inner wall of the air flow passage. The first wall plate 812, the second wall plate 813 and the third wall plate enclose a cavity 87 with an opening, the opening faces the hot air outlet 11 of the drying barrel 10, one end of the cavity 87 along the axial direction of the drying barrel 10 is communicated with the air inlet of the evaporator 33, and the other end of the cavity 87 along the axial direction of the drying barrel 10 is provided with a mounting plate 811.
When the first section 411 extends in the vertical direction, hot air strikes the third wall plate, and at this time, the air inlet holes 88 may be disposed above the air outlet holes 89 or the air inlet holes 88 may be disposed side by side with the air outlet holes 89 in the horizontal direction.
Considering that both sides of the first through hole 61 have support portions to support the drying tub 10, the first through hole 61 is located at the middle of the front support 60, and the evaporator 33 may be located at one side of the first plane, the first section 411 may be inclined to extend to the side of the heat pump dryer, in which case the hot wind may impinge on the first wall 812, and the inlet hole 88 and the outlet hole 89 may be provided on the first wall 812 or the mounting plate 811. Alternatively, to avoid adding an opening on the shell of the heat pump clothes dryer and reduce the processing cost, the air inlet holes 88 and the air outlet holes 89 in this embodiment may be both disposed on the mounting plate 811, and the air inlet holes 88 are located on the side of the air outlet holes 89 away from the first wall plate 812.
The body 81 can be provided with a first filter 50, the first filter 50 is installed at one end of the cavity 87 close to the evaporator 33, and hot air enters the cavity 87 and then enters the evaporator 33 after being filtered by the filter, so that foreign matters are prevented from entering the airflow channel. To facilitate access to the first filter 50, the body 81 may be detachably connected to the airflow channel, such as by snapping or screwing.
Since part of the hot air is guided out of the air outlet 89, a second filter may be disposed in the first through hole 61 or the first section 411 to prevent foreign matters in the hot air from entering the air.
The first filter 50 and the second filter may be lint filters well known to those skilled in the art.
The circulating fan 20 passes through the third part 43, the fourth part and the first section 411, the flowing path of hot air is long, the loss is large, the air inlet hole 88 is close to the circulating fan 20, namely the inlet flow of cold air is larger than the outlet flow of hot air, the pressure of an air flow channel is balanced, the area of the air outlet hole 89 is larger than that of the air inlet hole 88, the inlet flow of the cold air and the outlet flow of the hot air can be automatically balanced, and the problem that the cold air is introduced too much and cannot be heated in time by a heat pump system is avoided, so that the clothes drying efficiency is reduced.
When it is not necessary to cool the air flow to the evaporator 33, the inlet holes 88 and the outlet holes 89 are closed. First apron 82 and second apron 83 can be laminated with the wall of inlet port 88 and venthole 89 respectively, and for optimizing the closure effect, the area of first apron 82 is greater than the area of inlet port 88 in this embodiment, and first apron 82 is provided with first sealing member towards the surface of body 81, and first sealing member is used for sealing up inlet port 88.
It will be appreciated that the area of the second cover plate 83 is greater than the area of the air outlet 89 and that the surface of the second cover plate 83 facing the body 81 is also provided with a second seal for sealing the air outlet 89.
When the first cover 82 and the second cover 83 are closed, a first seal may be compressed between the first cover 82 and the body 81, and a second seal may be compressed between the second cover 83 and the body 81.
The first and second seals may be rubber rings as is well known to those skilled in the art.
The first cover 82 and the second cover 83 may be disposed on an outer wall surface of the airflow passage, and in order to prevent the first cover 82 and the second cover 83 from protruding out of the housing of the heat pump dryer when the first cover 82 and the second cover 83 are opened, the first cover 82 and the second cover 83 may be translated along the outer wall surface of the airflow passage or rotated toward the inside of the airflow passage.
In consideration of the small gap between the outer wall surface of the air flow path and the housing of the heat pump dryer, the present embodiment is coupled to the air flow path in such a manner that the first cover 82 and the second cover 83 are rotated toward the inside of the air flow path. Wherein, one side of the first cover plate 82 is provided with a first rotating shaft 821 which is rotatably connected on the body 81; one side of the second cover 83 has a second rotating shaft 831 rotatably coupled to the body 81, and a driver for simultaneously driving the first rotating shaft 821 and the second rotating shaft 831 to rotate toward the inside of the air flow passage to simultaneously open the air inlet hole 88 and the air outlet hole 89.
When the first rotating shaft 821 is located at the middle of one end of the first cover 82 and the second rotating shaft 831 is also located at the middle of one end of the second cover 83, the first cover 82 and the second cover 83 can rotate in the same direction. In order to drive the first cover 82 and the second cover 83 simultaneously, the ventilation assembly further includes a link assembly connecting the first cover 82 and the second cover 83, and a driving member is connected to any one of the link assembly, the first rotating shaft 821 and the second rotating shaft 831.
For example, referring to fig. 4, the connecting rod assembly may include a connecting rod connecting the first rotating shaft 821 and the second rotating shaft 831, the connecting rod is connected to end surfaces of the first rotating shaft 821 and the second rotating shaft 831, and the connecting rod does not intersect with axes of the first rotating shaft 821 and the second rotating shaft 831, that is, the first rotating shaft 821, the second rotating shaft 831, the connecting rod and the air flow passage may form a parallelogram link mechanism, which enables the first cover plate 82 and the second cover plate 83 to rotate in the same direction. At this time, the driver may be connected with any one of the first cover plate 82, the second cover plate 83, and the connection rod.
Referring to fig. 5, when the first rotating shaft 821 is located at a side of the air inlet hole 88 away from the air outlet hole 89, and the second rotating shaft 831 is located at a side of the air outlet hole 89 away from the air inlet hole 88, the first cover 82 and the second cover 83 can rotate in opposite directions.
The connecting rod assembly can comprise a third rotating shaft 84 connected with the body 81, and a first connecting rod 85 and a second connecting rod 86 connected to the end face of the third rotating shaft 84, wherein the third rotating shaft 84 is positioned between an air inlet hole 88 and an air outlet hole 89; one end of the first link 85 away from the third rotating shaft 84 is connected to an end surface of the first rotating shaft 821, and one end of the second link 86 away from the third rotating shaft 84 is connected to an end surface of the second rotating shaft 831; the output end of the driver is detachably connected to the third rotating shaft 84 to drive the third rotating shaft 84 to rotate, and further drive the first connecting rod 85 and the second connecting rod 86 to move, so as to simultaneously push the first rotating shaft 821 and the second rotating shaft 831, and simultaneously open the air inlet hole 88 and the air outlet hole 89.
The third rotating shaft 84 is located between the first rotating shaft 821 and the second rotating shaft 831, and the first rotating shaft 821, the second rotating shaft 831 and the third rotating shaft 84 may not be located in the same plane, so as to save the internal space of the heat pump clothes dryer for the convenience of manufacturing and manufacturing, and in this embodiment, the first rotating shaft 821, the second rotating shaft 831 and the third rotating shaft 84 may be located in the same plane.
The first link 85 connects the first rotating shaft 821 and the third rotating shaft 84, the second link 86 connects the second rotating shaft 831 and the third rotating shaft 84, in order to realize the simultaneous rotation of the first cover 82 and the second cover 83, the first link 85, the first rotating shaft 821, the third rotating shaft 84 and the airflow passage constitute a first four-bar linkage, the second link 86, the second rotating shaft 831, the third rotating shaft 84 and the airflow passage constitute a second four-bar linkage, one of the first four-bar linkage and the second four-bar linkage is a positive parallelogram linkage, and the other is an inverse parallelogram linkage, so as to realize the rotation of the first cover 82 and the second cover 83 in opposite directions.
To avoid the driver occupying the airflow channel and increasing the wind resistance, the driver may be arranged outside the airflow channel. Illustratively, when the air exchange assembly is disposed at the intersection of the first section 411 and the second section 412, the driver may be disposed in the gap between the front support 60 and the bottom side plate of the housing, the output shaft of the driver vertically penetrates through the sidewall of the airflow channel and extends into the airflow channel, and the third rotating shaft 84 is detachably connected to the output shaft, so as to facilitate the taking of the body 81 and the filter mounted on the body 81.
The first, second, and third shafts 821, 831, and 84 may be formed of POM, nylon, or the like, and may be self-lubricating and wear-resistant.
The present embodiment also provides a heat pump dryer, which includes: a drying tub 10, an evaporator 33, and a ventilation assembly; the drying tub 10 has a hot wind outlet 11, and the evaporator 33 has an air inlet; an air flow channel is provided between the hot air outlet 11 of the drying tub 10 and the air inlet of the evaporator 33, the air flow channel having a mounting hole, and an air exchange assembly is provided at the mounting hole, wherein the structure and operation of the air exchange assembly are described in the above embodiments, and will not be described herein.
The opening of the drying barrel 10 is supported on the front support 60, the opening of the drying barrel 10 is the hot air outlet 11, the evaporator 33 is arranged on one side of the opening of the drying barrel 10, and the air flow channel is formed on the front support 60 and is communicated with the hot air outlet 11 and the inlet of the evaporator 33.
The front support 60 is further provided with a mounting hole, the air exchange assembly is arranged at the mounting hole, and cold air can be introduced into the air flow channel, so that the temperature of air flow flowing to the evaporator 33 is reduced, the compressor 31 is prevented from being started and stopped frequently due to overload, and the clothes drying speed is reduced.
Wherein, the airflow channel comprises a first section 411 and a second section 412 which are communicated, one end of the first section 411, which is far away from the second section 412, is communicated with the hot air outlet 11 of the drying barrel 10, and one end of the second section 412, which is far away from the first section 411, is communicated with the air inlet of the evaporator 33; the first section 411 extends in a direction perpendicular to the axis of the drying tub 10, the second section 412 extends in a direction parallel to the axis of the drying tub 10, and a mounting hole is provided at a junction of the first section 411 and the second section 412.
The airflow passage may include a first section 411 and a second section 412, and the ventilation assembly may be disposed at the first section 411, the second section 412, and a position where the first section 411 and the second section 412 intersect, which is not limited in this embodiment.
Considering that the heat pump dryer may be provided with the first filter 50 at a position where the first section 411 and the second section 412 meet for filtering the air flow toward the evaporator 33, the air exchange assembly may be provided at the same position as the first filter 50, avoiding the formation of a plurality of empty slots on the heat pump dryer or the front supporter 60, reducing the manufacturing cost.
The heat pump clothes dryer is further provided with a shell, the shell surrounds the outside of the drying barrel 10 and the front support 60, the mounting hole is formed in the front support 60, and the shell is provided with a vent hole opposite to the mounting hole.
It should be noted that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description above, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A ventilation assembly for installation in an air flow path between a hot air outlet of a drying tub and an air inlet of an evaporator of a clothes dryer, comprising:
the body is arranged on the airflow channel and is provided with an air inlet;
a first cover plate mounted on the body;
the output end of the driver is connected with the first cover plate to drive the first cover plate to move, so that the air inlet hole is opened or closed, and when the air inlet hole is opened, cold air enters the air flow channel through the air inlet hole.
2. The ventilation assembly as claimed in claim 1, wherein the body has an air outlet, the body has a second cover plate, the driver is further connected to the second cover plate to drive the second cover plate to move so as to open or close the air outlet, and when the air outlet is opened, the hot air in the air flow channel is discharged through the air outlet.
3. The air exchange assembly according to claim 2, wherein the body includes a mounting plate mounted on the air flow passage and a first wall plate provided at the mounting plate toward an inner side of the air flow passage, the first wall plate being adapted to receive hot air discharged from the hot air outlet of the drying tub;
the air inlet hole and the air outlet hole are arranged on the mounting plate side by side, and the air outlet hole is located at one side, close to the first wall plate, of the air inlet hole.
4. The air exchange assembly according to claim 2, wherein the area of the air outlet hole is larger than the area of the air inlet hole.
5. The air exchange assembly according to any one of claims 1 to 4, wherein the area of the first cover plate is larger than the area of the air inlet hole, and a surface of the first cover plate facing the body is provided with a first sealing member for sealing the air inlet hole.
6. The air exchange assembly according to any one of claims 2 to 4, wherein one side of the first cover plate has a first rotation shaft rotatably connected to the body; one side of the second cover plate is provided with a second rotating shaft which is rotatably connected to the body, and the driver is used for simultaneously driving the first rotating shaft and the second rotating shaft to rotate towards the inner side of the airflow channel so as to simultaneously open the air inlet hole and the air outlet hole.
7. The air exchange assembly according to claim 6, wherein the first rotation shaft is located on a side of the air inlet hole away from the air outlet hole, and the second rotation shaft is located on a side of the air outlet hole away from the air inlet hole; and a connecting rod assembly is arranged between the first rotating shaft and the second rotating shaft, and the input end of the connecting rod assembly is connected with the output end of the driver.
8. The air exchange assembly according to claim 7,
the connecting rod assembly comprises a third rotating shaft connected with the body, and a first connecting rod and a second connecting rod which are connected to the end face of the third rotating shaft, and the third rotating shaft is positioned between the air inlet hole and the air outlet hole;
one end of the first connecting rod, which is far away from the third rotating shaft, is connected with the end face of the first rotating shaft, and one end of the second connecting rod, which is far away from the third rotating shaft, is connected with the end face of the second rotating shaft;
the output end of the driver is detachably connected with the third rotating shaft to drive the third rotating shaft to rotate, so that the first connecting rod and the second connecting rod are driven to move, the first rotating shaft and the second rotating shaft are simultaneously pushed, and the air inlet hole and the air outlet hole are simultaneously opened.
9. A heat pump clothes dryer comprising a drying tub, an evaporator and the air exchange assembly of any one of claims 1 to 8;
the drying barrel is provided with a hot air outlet, and the evaporator is provided with an air inlet;
an air flow channel is arranged between a hot air outlet of the drying barrel and an air inlet of the evaporator, the air flow channel is provided with a mounting hole, and the air exchange assembly is arranged at the mounting hole.
10. The heat pump clothes dryer of claim 9 wherein the air flow path includes a first section and a second section in communication, an end of the first section facing away from the second section being in communication with the hot air outlet of the drying tub, and an end of the second section facing away from the first section being in communication with the air inlet of the evaporator;
the first section extends along the direction perpendicular to the axis of the drying barrel, the second section extends along the direction parallel to the axis of the drying barrel, and the mounting hole is formed in the joint of the first section and the second section.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010431219.2A CN111676678B (en) | 2020-05-20 | 2020-05-20 | Ventilation assembly and heat pump clothes dryer |
| PCT/CN2021/090851 WO2021213530A1 (en) | 2020-05-20 | 2021-04-29 | Heat pump clothes dryer and control method for heat pump clothes dryer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010431219.2A CN111676678B (en) | 2020-05-20 | 2020-05-20 | Ventilation assembly and heat pump clothes dryer |
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| CN111676678A true CN111676678A (en) | 2020-09-18 |
| CN111676678B CN111676678B (en) | 2023-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2021213530A1 (en) * | 2020-05-20 | 2021-10-28 | 青岛海尔滚筒洗衣机有限公司 | Heat pump clothes dryer and control method for heat pump clothes dryer |
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| CN111676678B (en) | 2023-08-15 |
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Effective date of registration: 20230712 Address after: Room 221, management committee of Sino German ecological park, 2877 Tuanjie Road, Huangdao District, Qingdao City, Shandong Province, 266100 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. Applicant before: Haier Smart Home Co., Ltd. |
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