CN109307388B - Water pan and heat pump dryer comprising same - Google Patents
Water pan and heat pump dryer comprising same Download PDFInfo
- Publication number
- CN109307388B CN109307388B CN201811210931.9A CN201811210931A CN109307388B CN 109307388 B CN109307388 B CN 109307388B CN 201811210931 A CN201811210931 A CN 201811210931A CN 109307388 B CN109307388 B CN 109307388B
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- water
- condensed water
- heat exchange
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- tray
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 242
- 239000000498 cooling water Substances 0.000 claims description 45
- 238000001816 cooling Methods 0.000 claims description 38
- 238000007791 dehumidification Methods 0.000 claims description 19
- 238000001035 drying Methods 0.000 claims description 16
- 239000003507 refrigerant Substances 0.000 claims description 6
- 238000005265 energy consumption Methods 0.000 abstract description 8
- 239000007788 liquid Substances 0.000 description 14
- 239000002826 coolant Substances 0.000 description 13
- 238000012423 maintenance Methods 0.000 description 11
- 238000004140 cleaning Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 239000000428 dust Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000001704 evaporation Methods 0.000 description 5
- 230000008020 evaporation Effects 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 238000005507 spraying Methods 0.000 description 5
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- SAPGTCDSBGMXCD-UHFFFAOYSA-N (2-chlorophenyl)-(4-fluorophenyl)-pyrimidin-5-ylmethanol Chemical compound C=1N=CN=CC=1C(C=1C(=CC=CC=1)Cl)(O)C1=CC=C(F)C=C1 SAPGTCDSBGMXCD-UHFFFAOYSA-N 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
- F25B39/02—Evaporators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2339/00—Details of evaporators; Details of condensers
- F25B2339/02—Details of evaporators
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
- Drying Of Gases (AREA)
Abstract
The invention relates to a water pan and a heat pump dryer comprising the same, wherein the water pan comprises an upper pan and a lower pan, and the upper pan is positioned above the lower pan; the upper plate is used for receiving condensed water separated out by the dryer, the rear end of the upper plate is provided with a water falling hole, and the bottom surface of the upper plate is inclined downwards towards the rear direction; the lower disc is used for receiving condensed water flowing out of the water falling hole, and the bottom surface of the lower disc is inclined downwards towards the front direction; the inside of the lower disc forms a containing cavity capable of storing condensed water, and a heat exchange tube is arranged in the containing cavity. The invention can fully utilize the hidden cold energy of the condensed water, thereby achieving the purpose of reducing the energy consumption of the dryer.
Description
Technical Field
The invention relates to the technical field of heat exchange, in particular to a water receiving disc and a heat pump dryer comprising the same.
Background
In a general heat exchange device, such as a dryer, a refrigerant in an evaporator is in an evaporation heat absorption state during operation, the surface temperature of the evaporator is low, when air contacts with the surface of the evaporator, the air temperature is reduced, and liquid condensed water is precipitated when the air temperature is lower than a dew point temperature.
In a general water-cooling cooler, the cooling water is generally tap water or reclaimed water obtained by sewage treatment, the water temperature is approximately the wet bulb temperature corresponding to the ambient temperature, and the temperature of condensed water precipitated from an evaporator is very low, so that the temperature of the condensed water is lower than the outdoor ambient temperature and the temperature of an outdoor cooling water source.
From the prior experience, the temperature of the condensed water is 15 ℃ to 20 ℃ when the evaporation temperature is 10 ℃ to 15 ℃ or lower. When the ambient temperature is 33 ℃ (average temperature in summer in China), the temperature of the cooling water source is about 27 ℃ -30 ℃, and the temperature is higher than the condensation water temperature by a few degrees. If the condensed water is directly discharged, the cold energy hidden in the condensed water is wasted, which is equivalent to the loss of energy consumption of some dryers.
The prior technical scheme for recycling the hidden cold energy of the condensed water is that the condensed water is pumped to a spraying system by a water pump, the condensed water is sprayed to equipment needing cooling by the spraying system, but the condensed water has more cold energy consumption in the spraying process by the spraying system, the cooling effect on the equipment is poor, and the installation cost and the maintenance cost of the spraying system are increased.
Disclosure of Invention
In order to overcome at least one defect (deficiency) in the prior art, the invention provides the water receiving disc and the heat pump dryer comprising the water receiving disc, which can fully utilize the cold energy hidden by condensed water and achieve the purposes of energy conservation and emission reduction.
In order to achieve the purpose of the invention, the following technical scheme is adopted:
a water receiving disc comprises an upper disc and a lower disc, wherein the upper disc is positioned above the lower disc;
the upper plate is used for receiving condensed water separated out by the dryer, the rear end of the upper plate is provided with a water falling hole, and the bottom surface of the upper plate is inclined downwards towards the rear direction;
the lower disc is used for receiving condensed water flowing out of the water falling hole, and the bottom surface of the lower disc is inclined downwards towards the front direction;
the inside of the lower disc forms a containing cavity capable of storing condensed water, and a heat exchange tube is arranged in the containing cavity.
After the condensed water precipitated from the dryer is received by the upper tray, the condensed water can smoothly flow to the water falling hole arranged at the rear end of the upper tray along the bottom surface of the upper tray which is inclined downwards towards the rear direction. After the condensed water flowing out of the water falling hole is received by the lower disc, the bottom surface of the lower disc which is inclined downwards along the forward direction can rapidly start to accumulate at the lowest position of the cavity formed by the lower disc. With the continuous accumulation of condensed water, the liquid level in the cavity gradually rises. After the liquid level in the containing cavity reaches a certain height, the heat exchange tube in the containing cavity can be completely immersed, so that the heat exchange tube is fully contacted with condensed water, a cooling medium with the temperature higher than that of the condensed water can be introduced into the heat exchange tube, and the temperature of the cooling medium in the heat exchange tube can be reduced through heat exchange between the condensed water and the cooling medium in the heat exchange tube, so that the cooling medium can cool the dehumidifying air of the dryer. Therefore, the cooling capacity in the condensed water can be fully utilized to cool the cooling medium in the heat exchange tube, so that the cooling effect on the dehumidifying air of the dryer is enhanced, and the aim of reducing the energy consumption of the dryer is fulfilled.
The upper tray with the bottom surface inclined downwards towards the rear direction is arranged, so that the phenomenon that the continuous condensed water is splashed out of the water receiving tray due to the excessively high circulating air flow speed passing through the dryer can be avoided. If fine dust particles exist in the circulating air, the dust particles can be firstly stagnated in the upper disc after being wrapped by the condensed water, and can not be deposited in the lower disc, so that the cleaning and maintenance of the water receiving disc are convenient. And the upper disc is positioned above the lower disc, and when the cavity formed by the lower disc holds a certain amount of condensed water, the upper disc can serve as a top cover of the cavity, so that the evaporation of the water cooling capacity of the condensed water can be reduced.
Further, the heat exchange tube comprises a first calandria, the first calandria comprises a plurality of pipelines which are arranged in the accommodating cavity and are communicated in sequence, and the pipelines are obliquely arranged downwards in the front direction.
Because the bottom surface of the lower disc is inclined downwards forwards, condensed water can be accumulated at the lowest position of the containing cavity when falling into the lower disc from the water falling hole arranged on the upper disc. The pipelines are obliquely arranged downwards in the front direction, and when the liquid level in the accommodating cavity reaches the pipeline which can be arranged at the lowest position in the front direction in a soaking way, the heat exchange between the condensed water and the cooling water introduced into the heat exchange pipe can be started, and the time for each pipeline to be soaked by the condensed water is not required, so that the time for effectively utilizing the cold in the condensed water is increased. Moreover, the plurality of pipelines are arranged obliquely downwards in the forward direction, so that the lower disc with the bottom surface inclined downwards in the forward direction is also suitable, the pipe walls of the pipelines are easier to contact with condensed water at the bottom of the lower disc, and the cooling medium in the pipelines and the condensed water can exchange heat more effectively. The first calandria is formed by arranging a plurality of pipelines, so that the contact area between the heat exchange tube and the condensed water can be increased, the condensed water can exchange heat with the cooling water introduced into the heat exchange tube fully, and the cold energy utilization rate in the condensed water is improved.
Further, the heat exchange tube further comprises a second calandria arranged above the first calandria, the second calandria comprises a plurality of pipelines which are arranged in the accommodating cavity and are communicated in sequence, and the pipelines are horizontally arranged forwards.
The first calandria is formed by a plurality of pipelines downwards inclined arrangement in the forward direction, and the second calandria that is located first calandria top is formed by a plurality of pipelines towards the horizontal arrangement in the forward direction for space between first calandria and the second calandria is bigger, promptly is full of the comdenstion water between first calandria and second calandria more, can improve the comdenstion water and let in the heat exchange efficiency between the cooling water in first calandria and the second calandria, further improves the cold volume utilization ratio in the comdenstion water.
Further, two end plates respectively positioned at two ends of the plurality of pipelines are arranged in the accommodating cavity, and the two ends of the plurality of pipelines respectively penetrate through the end plates and are sequentially communicated through elbows.
The heat exchange tube can be conveniently taken out or put in through the arrangement of the end plate, and the assembly of the water receiving tray and the daily maintenance, disassembly and washing are facilitated.
Further, the water pan also comprises mounting folded plates which are arranged on any two opposite sides of the lower plate or on any three side surfaces of the lower plate or on four side surfaces of the lower plate.
Any two opposite sides of the lower disc or any three sides of the lower disc or four sides of the lower disc are provided with mounting folded plates, so that the water receiving disc can be conveniently mounted below a cabinet of the dryer, and the water receiving disc can be conveniently detached from the lower part of the cabinet of the dryer for maintenance and cleaning.
Further, the front end of the lower disc is provided with an overflow device.
When the liquid level in the containing cavity reaches the overflow limit, the condensed water can uniformly overflow and drain through the overflow device arranged on the lower disc, so that the overflowed condensed water can be conveniently collected.
Further, the overflow device comprises an overflow baffle and a plurality of overflow holes, wherein the overflow baffle is arranged at the front end of the lower disc, the overflow holes are semicircular, and the overflow holes are arranged at the upper edge of the overflow baffle.
The plurality of semicircular overflow holes are arranged at the upper edge of the overflow baffle plate, so that condensed water can overflow from the overflow holes more easily and drain down.
Further, the plurality of overflow apertures form a row.
The overflow holes form a row, which is more beneficial to overcoming the surface tension of the liquid surface, so that the condensed water overflows and leaks from the overflow holes smoothly.
Further, a splash guard is provided at the rear end of the upper disc, and the splash guard is inclined toward the inside of the upper disc.
The air flow can splash the condensed water on the upper disc, and the splash guard which is arranged at the rear end of the upper disc and is inclined towards the inner part of the upper disc can effectively block the splashed condensed water, so that the condensed water cannot enter the dryer and cannot float out of the water receiving disc.
The utility model provides a heat pump drier, includes the dehumidification passageway that is used for with drying room intercommunication, water-cooling cooler and links to each other in proper order and form refrigerant cycle's compressor, evaporimeter, throttling element, condenser, and water-cooling cooler, evaporimeter and condenser set up in the dehumidification passageway, and the air in the drying room loops through water-cooling cooler, evaporimeter, condenser and returns in the drying room after getting into the dehumidification passageway, the below of evaporimeter is equipped with the water collector as described above, and the entry end of heat exchange tube is used for connecting the cooling water source, and the water inlet of water-cooling cooler is connected to the exit end of heat exchange tube.
After the condensed water precipitated from the evaporator below the evaporator of the heat pump dryer is received by the upper tray, the condensed water flowing out from the water falling hole can be smoothly flowed to the water falling hole arranged at the rear end of the lower tray along the bottom surface of the upper tray which is inclined downwards towards the rear direction, and after the condensed water flowing out from the water falling hole is received by the lower tray, the condensed water can be quickly accumulated at the lowest position of a containing cavity formed by the lower tray and the overflow device along the bottom surface of the lower tray which is inclined downwards towards the front direction. The liquid level in the containing cavity reaches a certain height and then can completely immerse the heat exchange tube in the containing cavity, so that the heat exchange tube fully contacts with the condensed water, the inlet end of the heat exchange tube is connected with a cooling water source, cooling water with the temperature higher than that of the condensed water is introduced into the heat exchange tube, the temperature of the cooling water in the heat exchange tube can be reduced through heat exchange between the condensed water and the cooling water in the heat exchange tube, the outlet end of the heat exchange tube is connected with a water cooling cooler, the cooling water with the reduced temperature is continuously led to the water cooling cooler, and therefore the cooling capacity in the condensed water separated out by an evaporator of the heat pump dryer is fully utilized, the cooling water in the water cooling cooler of the heat pump dryer is precooled, the dehumidifying energy efficiency ratio of the heat pump dryer is improved, and the aim of reducing the energy consumption of the dryer is achieved.
Compared with the prior art, the technical scheme of the invention has the beneficial effects that:
(1) Through the inclined design of the bottom surfaces of the upper disc and the lower disc, the bottom surface of the upper disc which is inclined downwards along the backward direction after the condensed water is accepted by the upper disc can smoothly flow to a water falling hole arranged at the rear end of the upper disc, and the bottom surface of the lower disc which is inclined downwards along the forward direction after the condensed water is accepted by the lower disc can rapidly start to accumulate at the lowest position of a containing cavity formed by the lower disc, and after the condensed water in the containing cavity is soaked in a heat exchange pipe in the containing cavity, the heat exchange between the condensed water and the heat exchange pipe can be realized, and the cold quantity in the condensed water is fully utilized;
(2) The design of the upper disc and the lower disc can avoid the condition that the circulating air flow passing through the dryer is too fast to splash the continuous condensed water outside the water receiving disc, and the circulating air has fine dust particles, and the condensed water can be firstly stagnated in the upper disc but not deposited in the lower disc after being wrapped and clamped, so that the cleaning and maintenance of the water receiving disc are convenient;
(3) The upper disc is positioned above the lower disc, and when a certain amount of condensed water is stored in the cavity formed by the lower disc, the upper disc can serve as a top cover of the cavity, so that the consumption of the condensed water cooling capacity can be reduced;
(4) The inclined design of the first calandria is just suitable for the lower disc with the bottom surface inclined downwards in the leading direction, so that the condensed water only needs to soak the lowest pipeline of the first calandria, the heat exchange between the condensed water and the first calandria can be started, the time for effectively utilizing the cold in the condensed water can be increased, the pipeline is easier to contact with the condensed water at the bottom of the lower disc, and the heat exchange efficiency between a cooling medium in the pipeline and the condensed water is improved;
(5) The horizontal design of the second calandria can be matched with the inclined design of the first calandria positioned below the second calandria, so that more condensed water is filled between the first calandria and the second calandria, thereby improving the heat exchange efficiency between the condensed water and cooling water introduced into the first calandria and the second calandria, and further improving the cold energy utilization rate in the condensed water;
(6) The first calandria and the second calandria are integrated through the end plate, so that the first calandria and the second calandria can be conveniently taken out or put in, and the assembly of the water pan and the daily maintenance disassembly and washing are facilitated;
(7) By arranging the mounting folded plate, the water pan and the dryer cabinet can be conveniently mounted and dismounted;
(8) By arranging the overflow device, the condensed water can uniformly overflow and drain through the overflow device arranged on the lower disc, so that the overflowed condensed water can be conveniently collected;
(9) The dehumidification energy efficiency ratio of the heat pump dryer can be improved by precooling cooling water of the condenser of the heat pump dryer through the water receiving disc.
Drawings
FIG. 1 is an assembled view of a drip tray according to an embodiment of the present invention;
FIG. 2 is an exploded view of a drip tray according to an embodiment of the present invention;
FIG. 3 is a left side cross-sectional view of a drip tray according to an embodiment of the invention;
FIG. 4 is a schematic view of a heat exchange tube according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of the operation of a heat pump dryer according to an embodiment of the present invention;
fig. 6 is an assembled view of a heat pump dryer according to an embodiment of the present invention.
Description: 10. a top plate; 11. a water falling hole; 12. a splash guard; 20. a lower plate; 21. a cavity; 22. an overflow baffle; 23. an overflow aperture; 30. a heat exchange tube; 31. a first gauntlet; 32. a second gauntlet; 33. an elbow; 34. an end plate; 35. a pull rod; 36. an outlet end; 37. an inlet end; 40. installing folded plates; 41. bolt holes; 42. an outlet conduit; 43. an inlet duct; 44. an outlet elbow; 45. an inlet elbow; 50. a water collection tank; 51. a drain pipe; 61. a drying room; 71. a compressor; 72. an evaporator; 73. a throttle element; 74. a condenser; 75. a water-cooled cooler; 76. a blower; 77. and a cabinet.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the present patent;
for the purpose of better illustrating the embodiments, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the actual product dimensions;
it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and are not to be interpreted as indicating or implying a relative importance or number of technical features being indicated. Thus, a feature of a "first" or "second" as defined may include one or more such feature, either explicitly or implicitly. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "inclined", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operate in a specific orientation.
In the description of the present invention, unless explicitly stated and limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, or may include both the first and second features not being in direct contact but being in contact by another feature therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally connected; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, so to speak, the two elements are communicated internally. It will be understood by those of ordinary skill in the art that the terms described above are in the specific sense of the present invention.
The technical scheme of the invention is further described below with reference to the accompanying drawings and examples.
Examples
As shown in fig. 1-3, a water receiving tray comprises an upper tray 10 and a lower tray 20, wherein the upper tray 10 is positioned above the lower tray 20;
the upper plate 10 is used for receiving condensed water precipitated by the dryer, the rear end of the upper plate 10 is provided with a water falling hole 11, and the bottom surface of the upper plate 10 is inclined downwards towards the rear direction;
the bottom surface of the lower tray 20 is used for receiving the condensed water flowing out of the water falling hole 11, and the bottom surface of the condensed water tray 20 is inclined downwards towards the front direction;
the bottom wall 20 has a cavity 21 for storing condensed water, and a heat exchange tube 30 is disposed in the cavity 21.
After the condensed water precipitated from the dryer is received by the upper tray 10, the bottom surface of the upper tray 10 inclined downward in the rear direction can smoothly flow to the water falling hole 11 provided at the rear end of the upper tray 10. After the condensed water flowing out from the water falling hole 11 is received by the lower tray 20, the bottom surface of the lower tray 20 inclined downward in the forward direction can rapidly start to accumulate at the lowest position of the cavity 21 formed by the lower tray 20. As the condensed water is continuously accumulated, the liquid level in the cavity 21 gradually rises. After the liquid level in the containing cavity 21 reaches a certain height, the heat exchange tube 30 in the containing cavity 21 can be completely immersed, so that the heat exchange tube 30 is fully contacted with condensed water, a cooling medium with the temperature higher than that of the condensed water can be introduced into the heat exchange tube 30, and the temperature of the cooling medium in the heat exchange tube 30 can be reduced through heat exchange between the condensed water and the cooling medium in the heat exchange tube 30, so that the cooling medium can cool the dehumidifying air of the dryer. Therefore, the cooling capacity in the condensed water can be fully utilized to cool the cooling medium in the heat exchange tube, so that the cooling effect on the dehumidifying air of the dryer is enhanced, and the aim of reducing the energy consumption of the dryer is fulfilled.
The upper tray 10 with the bottom surface inclined downwards towards the rear is arranged, so that the phenomenon that the circulating air flow speed passing through the dryer is too high to splash the continuous condensed water outside the water receiving tray can be avoided. If fine dust particles exist in the circulating air, the dust particles can be firstly stored in the upper disc 10 without being deposited in the lower disc 20 after being wrapped by the condensed water, so that the cleaning and maintenance of the water receiving disc are convenient. Moreover, the upper tray 10 is located above the lower tray 20, and when the cavity 21 formed by the lower tray 20 holds a certain amount of condensed water, the upper tray 10 can serve as a top cover of the cavity 21, so that the evaporation of the condensed water can be reduced.
In an embodiment, the upper and lower trays 10 and 20 may be made of smooth stainless steel. The seam of the stainless steel plate is tightly waterproof welded, so that condensed water can be prevented from leaking.
Preferably, the bottom surface of the upper tray 10 and/or the lower tray 20 is provided with reinforcing ribs, which may increase the load-bearing strength and deformation resistance of the upper tray 10 and/or the lower tray 20.
As shown in fig. 4, in the present embodiment, the heat exchange tube 30 includes a first tube bank 31 and a second tube bank 32 located above the first tube bank 31, the first tube bank 31 includes a plurality of tubes disposed in the cavity 21 and sequentially connected, the plurality of tubes are arranged obliquely downward toward the front, and the second tube bank 32 includes a plurality of tubes disposed in the cavity 21 and sequentially connected, the plurality of tubes are arranged horizontally toward the front.
Since the bottom surface of the lower tray 20 is inclined downward toward the front, condensed water is first accumulated at the lowest position of the chamber 21 when falling from the water falling hole 11 provided in the upper tray 10 to the lower tray 20. The plurality of pipes are arranged obliquely downward toward the front, and when the liquid level in the accommodating chamber 21 reaches the pipe which can be arranged at the lowest position in front in a flooding manner, heat exchange between the condensed water and the cooling water introduced into the heat exchange pipe 30 can be started without waiting until each pipe is flooded by the condensed water, thereby increasing the time for which the cold in the condensed water is effectively utilized. Moreover, the plurality of pipes are arranged obliquely downwards in the forward direction, so that the lower disc 20 with the bottom surface inclined downwards in the forward direction is also suitable, the pipe walls of the pipes are easier to contact with condensed water at the bottom of the lower disc 20, and the cooling medium in the pipes and the condensed water can exchange heat more effectively. The first drain pipes 31 are formed by arranging a plurality of pipes, so that the contact area between the heat exchange pipe 30 and the condensed water can be increased, the condensed water can exchange heat with the cooling water flowing into the heat exchange pipe 30 sufficiently, and the cold energy utilization rate in the condensed water is improved.
The first calandria 31 is formed by a plurality of pipelines downwards inclined arrangement in the forward direction, and the second calandria 32 that is located first calandria 31 top is formed by a plurality of pipelines downwards horizontal arrangement in the forward direction for space between first calandria 31 and the second calandria 32 is bigger, promptly is full of the comdenstion water between first calandria 31 and second calandria 32 more, can improve the comdenstion water and let in the heat exchange efficiency between the cooling water in first calandria 31 and the second calandria 32, further improves the cold utilization ratio in the comdenstion water.
In the specific implementation process, the first calandria 31 and the second calandria 32 can be mutually communicated, and cooling water can be firstly introduced into the first calandria 31 and then introduced into the second calandria 32 or firstly introduced into the second calandria 32 and then introduced into the first calandria 31, so that the cooling water can fully exchange heat with condensed water, and the heat exchange efficiency is improved; the first calandria 31 and the second calandria 32 may not be communicated with each other, and two cooling water flows may enter the first calandria 31 and the second calandria 32 to exchange heat with condensed water, so that a certain heat exchange efficiency may be ensured, and the cooling water volume for realizing heat exchange in unit time may be increased.
Preferably, the heat exchange tube 30 is made of a corrosion-resistant high-efficiency metal heat exchange tube, so that the inner wall of the heat exchange tube 30 is in long-term contact with cooling water (reclaimed water) and the outer wall of the heat exchange tube is not corroded and damaged even if the inner wall of the heat exchange tube is in long-term contact with condensed water (slightly acidic water), and the heat exchange performance is prevented from being influenced.
The outlet ends 36 of the heat exchange tubes 30 may extend from the bottom surface of the upper tray 10 and connect to outlet bends 44, the outlet bends 44 connecting to the outlet tubes 42; the outlet ends 36 of the heat exchange tubes 30 may also extend from the gap between the upper and lower trays 10, 20 as shown in fig. 1 and connect to outlet bends 44, the outlet bends 44 connecting to the outlet tubes 42.
Similarly, the inlet end 37 of the heat exchange tube 30 may extend from the bottom surface of the upper plate 10 and be connected to an inlet elbow 45, the inlet elbow 45 being connected to the inlet pipe 43; the inlet ends 37 of the heat exchange tubes 30 may also extend from the gap between the upper and lower trays 10, 20 as shown in fig. 1 and connect to inlet bends 45, the inlet bends 45 connecting to inlet tubes 43.
In this embodiment, two end plates 34 are disposed in the cavity 21 and located at two ends of the multiple pipes, and the two ends of the multiple pipes respectively pass through the end plates 34 and are sequentially communicated through the elbow 33.
The heat exchange tube 30 can be conveniently taken out or put in integrally through the arrangement of the end plate 34, which is beneficial to the assembly of the water receiving tray and the disassembly and the cleaning of the daily maintenance.
Preferably, a tie rod 35 is connected between the two end plates 34, so as to keep the first row of tubes 31 and the second row of tubes 32 from deforming. At least two pull rods 35 are provided, and the two pull rods 35 are respectively connected between the front end and the rear end of the two end plates 34.
In a specific implementation process, the pull rod 35 is connected with the end plate 34 through the fixed nut and the movable nut, and when the heat exchange tube 30 is assembled, the first drain tube 31 and the second drain tube 32 can be fastened without deformation by tightening the movable nut.
Preferably, the lower end of the end plate 34 is provided with an everting plate, so that the heat exchange tube 30 can be stably placed on the bottom surface of the cavity 21 formed by the lower plate 20.
In this embodiment, the drip tray further includes mounting flaps 40, the mounting flaps 40 being mounted on either opposite sides of the bottom wall 20 or on either three sides of the bottom wall 20 or on four sides of the bottom wall 20.
The installation folded plates 40 are arranged on any two opposite sides of the lower disc 20 or around the lower disc 20, so that the water pan can be conveniently installed below the cabinet 77 of the dryer, and the water pan can be conveniently detached from the lower side of the cabinet 77 of the dryer for maintenance and cleaning.
In the specific implementation process, the installation folded plate 40 is provided with the bolt holes 41, and the water pan can be conveniently installed below the cabinet 77 of the dryer by adopting the bolt connection, and also can be conveniently detached from the lower part of the cabinet 77 of the dryer for maintenance and cleaning.
Preferably, the mounting flaps 40 provided at the front side and/or the left and right sides of the lower tray 20 may protrude from the lower tray 20 and extend to the upper tray 10, and at this time the mounting flaps 40 extending to the upper tray 10 may serve as a barrier for the upper tray 10 so that condensed water falling on the upper tray 10 does not leak from the upper side of the upper tray 10.
In this embodiment, the front end of the bottom wall 20 is provided with an overflow device.
When the liquid level in the containing cavity 21 reaches the overflow limit, the condensed water can uniformly overflow and drain through the overflow device arranged on the lower disc 20, so that the overflowed condensed water can be conveniently collected.
In this embodiment, the overflow device includes an overflow baffle 22 and a plurality of overflow holes 23, the overflow baffle 22 is disposed at the front end of the lower disc 20, the overflow holes 23 are semicircular, and the plurality of overflow holes 23 are arranged on the upper edge of the overflow baffle 22 to form a row.
The plurality of semicircular overflow holes 23 are arranged on the upper edge of the overflow baffle 22, so that condensed water can overcome the surface tension of the liquid level more easily and overflow from the overflow holes 23 and drain down smoothly.
Preferably, the overflow barrier 22 is removably coupled to the bottom wall 20.
The overflow baffle 22 can be flexibly detached from the front end of the lower disc 20, and condensed water in the accommodating cavity 21 can be conveniently poured out during daily maintenance.
In this embodiment, the rear end of the upper disc 10 is provided with a splash guard 12, which splash guard 12 is inclined towards the inside of the upper disc 10.
The air flow may splash the condensed water of the upper tray 10, and the splash guard 12 provided at the rear end of the upper tray 10 and inclined toward the inside of the upper tray 10 may effectively block the splashed condensed water so that the condensed water does not enter the dryer and does not float out of the water receiving tray.
Preferably, the water receiving tray further comprises a water collecting tank 50, and the water collecting tank 50 is arranged at the front side of the overflow device.
The water collecting tank 50 provided at the front side of the overflow device can collect condensed water overflowed from the overflow device and uniformly drain the condensed water.
Preferably, the water collecting tank 50 is provided with a water outlet, the water outlet is connected with a drain pipe 51, the bottom surface of the water collecting tank 50 is inclined towards the direction of the water outlet, and condensed water in the water collecting tank 50 can quickly flow to the water outlet along the inclined bottom surface and be discharged out of the water receiving disc through the drain pipe 51.
Preferably, the lower tray 20 and the water collecting tank 50 are of an integrated structure.
The lower tray 20 and the water collecting tank 50 may be integrally formed by welding a stainless steel plate, and the stainless steel plate may be smooth.
In this embodiment, the assembling process of the water receiving tray is as follows: the overflow baffle 22 with a row of overflow holes 23 at the upper edge is arranged at the front end of the lower disc 20, then the heat exchange tube 30 is placed in the containing cavity 21 formed in the lower disc 20, the upper disc 10 is stacked above the lower disc 20, finally the outlet end 36 of the heat exchange tube 30 extends upwards and is connected with the outlet pipeline 42 through the outlet elbow 44, the inlet end 37 of the heat exchange tube 30 extends upwards and is connected with the inlet pipeline 43 through the inlet elbow 45, and the water outlet of the water collecting tank 50 is connected with the water outlet pipe 51.
As shown in fig. 5 and 6, a heat pump dryer comprises a dehumidification channel, a water-cooling cooler 75, a compressor 71, an evaporator 72, a throttling element 73 and a condenser 74, wherein the dehumidification channel is communicated with a drying room 61, the compressor 71, the evaporator 72, the throttling element 73 and the condenser 74 are sequentially connected to form refrigerant circulation, the water-cooling cooler 75, the evaporator 72 and the condenser 74 are arranged in the dehumidification channel, air in the drying room 61 sequentially passes through the water-cooling cooler 75, the evaporator 72 and the condenser 74 after entering the dehumidification channel and returns to the drying room 61, the water receiving tray is arranged below the evaporator 72, the inlet end 37 of a heat exchange tube 30 is used for being connected with a cooling water source, and the outlet end 36 of the heat exchange tube 30 is connected with a water inlet of the water-cooling cooler 75.
After the hot and humid air in the drying room 61 enters the dehumidification channel, the primary cooling is realized through heat exchange between the water cooling cooler 75 and cooling water in the water cooling cooler 75, the heat is absorbed through evaporation of the refrigerant in the evaporator 72, the hot and humid air is further cooled, liquid condensed water can be separated out when the air temperature is lower than the dew point temperature, the cooled and dehumidified air passes through the condenser 74 again, and the refrigerant in the condenser 74 is condensed to release heat, so that the air is warmed again to form hot and dry air to return to the drying room 61.
The water receiving tray is arranged below the evaporator 72 of the heat pump dryer, after the condensed water precipitated from the evaporator 72 is received by the upper tray 10, the condensed water can smoothly flow to the water falling hole 11 arranged at the rear end of the lower tray 20 along the bottom surface of the upper tray 10 inclined downwards towards the rear direction, and after the condensed water flowing out of the water falling hole 11 is received by the lower tray 20, the condensed water can rapidly start to accumulate at the lowest position of the containing cavity 21 formed by the lower tray 20 and the overflow device along the bottom surface of the lower tray 20 inclined downwards towards the front direction. After the liquid level in the containing cavity 21 reaches a certain height, the heat exchange tube 30 in the containing cavity 21 can be completely immersed, so that the heat exchange tube 30 is fully contacted with condensed water, the inlet end 37 of the heat exchange tube 30 is connected with a cooling water source, cooling water with the temperature higher than that of the condensed water is introduced into the heat exchange tube 30, the temperature of the cooling water in the heat exchange tube 30 can be reduced through heat exchange between the condensed water and the cooling water in the heat exchange tube 30, the outlet end 36 of the heat exchange tube 30 is connected with the water inlet of the water-cooling cooler 75, and the cooling water with the reduced temperature is continuously led to the water-cooling cooler 75, thereby fully utilizing the cold quantity in the condensed water precipitated by the evaporator 72 of the heat pump dryer, pre-cooling the cooling water of the water-cooling cooler 75 in the heat pump dryer, improving the dehumidification energy efficiency ratio of the heat pump dryer, and achieving the purpose of reducing the energy consumption of the dryer.
Generally, the pre-cooling of the cooling water by the condensed water in the water receiving tray can reduce the temperature of the pre-cooled cooling water and the cooling water which is not pre-cooled by 2-3 ℃, and the pre-cooled cooling water is conveyed to the water cooling cooler 75 to exchange heat with the hot and humid air from the drying room 61, so that the hot and humid air has more temperature reduction range, and the dehumidification efficiency is improved.
Preferably, a cooling water pump is further provided at the inlet end 37 or the outlet end 36 of the heat exchange tube 30, so that cooling water in the cooling water source is continuously introduced into the heat exchange tube 30 and is supplied to the water-cooled cooler 75.
In a specific implementation process, the heat pump dryer is further provided with a fan 76, so that the hot dry air coming out of the dehumidification channel flows into the drying room 61 quickly, and meanwhile, the hot humid air in the drying room 61 flows into the dehumidification channel quickly, thereby accelerating the dehumidification efficiency.
The process of assembling the drip tray below the evaporator 72 of the heat pump dryer is: the heat pump dryer is placed in a cabinet 77, a water receiving disc is placed on a base of the cabinet 77, a drain pipe 51 penetrates out of a circular hole pre-opened in the base, then mounting folded plates 40 arranged on any two opposite sides of a lower disc 20 or on the periphery of the lower disc 20 are fixedly connected with the base of the cabinet 77 through bolts, and finally an outlet pipeline 42 is connected with a water inlet of a water cooling cooler 75, and an inlet pipeline 43 is connected with a water conveying pipeline of a cooling water source.
When the heat pump dryer with the assembled water receiving disc is operated, the cooling water pump is started, so that cooling water is led into the heat exchange tube 30 in the water receiving disc, pre-cooling is realized by heat exchange between the cooling water and condensed water through the heat exchange tube 30 in the water receiving disc, and then the cooling water enters the water cooling cooler 75 to exchange heat with hot and humid air from the drying room 61, so that the temperature of the hot and humid air is initially reduced before the hot and humid air enters the evaporator 72, more condensed water is precipitated in the evaporator 72, and a higher dehumidification effect is achieved. Meanwhile, more condensed water precipitated from the evaporator 72 can flow into the lower disc 20 through the water falling hole 11 after being received by the upper disc 10, and the condensed water is stored in the cavity 21 formed in the lower disc 20, so that the condensed water can permeate the heat exchange tube 30 in the cavity 21, and cooling water introduced into the heat exchange tube 30 can exchange heat with the condensed water better, and the pre-cooling effect is further improved. Therefore, the heat pump dryer can fully utilize the cold energy hidden by the condensate water generated by the heat pump dryer, improve the dehumidification energy efficiency ratio of the heat pump dryer, and achieve the purpose of reducing the energy consumption of the dryer.
The same or similar reference numerals correspond to the same or similar components;
the positional relationship depicted in the drawings is for illustrative purposes only and is not to be construed as limiting the present patent;
it is to be understood that the above examples of the present invention are provided by way of illustration only and not by way of limitation of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (7)
1. The water receiving disc is characterized by comprising an upper disc and a lower disc, wherein the upper disc is positioned above the lower disc;
the upper plate is used for receiving condensed water separated out by the dryer, the rear end of the upper plate is provided with a water falling hole, and the bottom surface of the upper plate is inclined downwards towards the rear direction;
the lower disc is used for receiving condensed water flowing out of the water falling hole, and the bottom surface of the lower disc is inclined downwards towards the front direction;
a cavity capable of storing condensed water is formed in the lower disc, and a heat exchange tube is arranged in the cavity;
the heat exchange tube comprises a first calandria which comprises a plurality of pipelines which are arranged in the accommodating cavity and are communicated in sequence, and the pipelines are obliquely arranged downwards forwards
The heat exchange tube also comprises a second calandria which is positioned above the first calandria, the second calandria comprises a plurality of pipelines which are arranged in the accommodating cavity and are communicated in sequence, and the pipelines are horizontally arranged forwards;
the front end of the lower disc is provided with an overflow device communicated with the containing cavity;
the water receiving disc further comprises a water collecting tank, and the water collecting tank is arranged at the front side of the overflow device.
2. The water pan as claimed in claim 1, wherein two end plates are disposed in the cavity, the two end plates being disposed at two ends of the plurality of pipes, respectively, and the two ends of the plurality of pipes are respectively connected through the end plates and are sequentially connected through the elbow.
3. The drip tray of claim 1, further comprising mounting flaps mounted on either of the opposite sides of the bottom tray or on either three sides of the bottom tray or on four sides of the bottom tray.
4. The drip tray of claim 1, wherein said overflow means comprises an overflow baffle and a plurality of overflow apertures communicating with the cavity, said overflow baffle being disposed at the front end of the lower tray, said overflow apertures being semi-circular in shape, said plurality of overflow apertures being disposed at the upper edge of the overflow baffle.
5. The drip tray of claim 4, wherein said plurality of overflow apertures form a row.
6. The drip tray of claim 1, wherein a rear end of said upper tray is provided with a splash guard, said splash guard being inclined toward the interior of the upper tray.
7. The utility model provides a heat pump drier, includes the dehumidification passageway that is used for with drying room intercommunication, water-cooling cooler and links to each other in proper order and form refrigerant circulation's compressor, evaporimeter, throttling element, condenser, and water-cooling cooler, evaporimeter and condenser set up in the dehumidification passageway, and the air in the drying room loops through water-cooling cooler, evaporimeter, condenser and returns to in the drying room after getting into the dehumidification passageway, its characterized in that, the below of evaporimeter is equipped with the water collector of any one of claims 1-6, and the entry end of heat exchange tube is used for connecting the cooling water source, and the water inlet of water-cooling cooler is connected to the exit end of heat exchange tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811210931.9A CN109307388B (en) | 2018-10-17 | 2018-10-17 | Water pan and heat pump dryer comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811210931.9A CN109307388B (en) | 2018-10-17 | 2018-10-17 | Water pan and heat pump dryer comprising same |
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| Publication Number | Publication Date |
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| CN109307388A CN109307388A (en) | 2019-02-05 |
| CN109307388B true CN109307388B (en) | 2024-03-26 |
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| CN201811210931.9A Active CN109307388B (en) | 2018-10-17 | 2018-10-17 | Water pan and heat pump dryer comprising same |
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| CN109307388A (en) | 2019-02-05 |
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