CN105318453A - Outdoor unit defrosting device and air conditioner - Google Patents
Outdoor unit defrosting device and air conditioner Download PDFInfo
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- CN105318453A CN105318453A CN201410264724.7A CN201410264724A CN105318453A CN 105318453 A CN105318453 A CN 105318453A CN 201410264724 A CN201410264724 A CN 201410264724A CN 105318453 A CN105318453 A CN 105318453A
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- 238000010257 thawing Methods 0.000 title claims abstract description 61
- 239000003507 refrigerant Substances 0.000 claims abstract description 41
- 230000005540 biological transmission Effects 0.000 claims description 7
- 238000007664 blowing Methods 0.000 claims 2
- 238000010438 heat treatment Methods 0.000 abstract description 19
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 5
- 230000017525 heat dissipation Effects 0.000 description 15
- 238000001704 evaporation Methods 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000003860 sleep quality Effects 0.000 description 1
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Abstract
The invention discloses an outdoor unit defrosting device and an air conditioner with the same. The outdoor unit defrosting device comprises a heat exchange module and an air supply module. The heat exchange module is arranged at the position of a refrigerant conveying pipe between an exhaust port of an air conditioner compressor and a four-way valve and used for controlling heat exchange between the refrigerant conveying pipe and outside air. The air supply module comprises an air supply pipe fitting and a fan. The air supply pipe fitting comprises an air inlet and an air outlet, the air inlet of the air supply pipe fitting corresponds to the heat exchange module, the air outlet of the air supply pipe fitting corresponds to a fin of an outdoor unit, and the fan controls air having undergone heat exchange with the heat exchange module to flow into the air supply pipe fitting through the air inlet. Remaining heat generated in the air conditioner running process is conveyed to the fin of the outdoor unit, and thus the outdoor unit defrosting effect is achieved. The shortcoming that the use of the air conditioner by users is affected due to noise resulting from frequent starting and shutdown is overcome. According to the outdoor unit defrosting device, the heating capacity of the air conditioner is not reduced in the defrosting process, and thus the heating efficiency is guaranteed.
Description
Technical Field
The invention relates to the field of air conditioners, in particular to an outdoor unit defrosting device of an air conditioner and the air conditioner.
Background
When most heat pump type air conditioners operate and heat under the working condition of high humidity at present, the evaporation temperature of a refrigerant is reduced along with the reduction of the outdoor environment temperature. When the evaporation temperature of the refrigerant is lower than 0 ℃, the surface of the outdoor heat exchanger is easily frosted. Along with the increase of the frosting degree, the heating effect of the air conditioner is also continuously reduced. When the air conditioner is frosted seriously, the heating is required to be stopped, and the full defrosting working state is entered. Therefore, the comfort of the user in using the air conditioner is influenced, and the sleep quality of the user is influenced by the noise caused by frequently starting and stopping the air conditioner at night.
In order to avoid the defects caused by shutdown defrosting, most of the existing air conditioners defrost the heat exchanger of the outdoor unit from inside to outside by introducing a high-temperature refrigerant into a copper pipe inside the heat exchanger of the outdoor unit. However, the above defrosting method reduces the heating capacity of the air conditioner, thereby seriously affecting the heating efficiency of the air conditioner.
Disclosure of Invention
The invention provides an outdoor unit defrosting device, which aims to achieve the aim of defrosting an outdoor unit without reducing the heating capacity of an air conditioner or influencing the comfort of a user in using the air conditioner.
In order to achieve the purpose, the invention provides an outdoor defrosting device which comprises a heat exchange assembly and an air supply assembly; wherein,
the heat exchange assembly is arranged at a refrigerant conveying pipe between an exhaust port of an air conditioner compressor and the four-way valve and is used for controlling heat exchange between the refrigerant conveying pipe and outside air;
the air supply assembly comprises an air supply pipe fitting and a fan, the air supply pipe fitting comprises an air inlet and an air outlet, the air inlet of the air supply pipe fitting corresponds to the heat exchange assembly, the air outlet of the air supply pipe fitting corresponds to the fins of the outdoor unit, and the fan controls air after heat exchange with the heat exchange assembly to flow into the air supply pipe fitting from the air inlet so as to convey the air after heat exchange with the heat exchange assembly to the fins of the outdoor unit.
Preferably, the heat exchange assembly comprises a heat dissipation base and a plurality of radiating fins arranged on the heat dissipation base, a through hole matched with the refrigerant conveying pipe is formed in the heat dissipation base, and the heat dissipation base is sleeved on the refrigerant conveying pipe through the through hole and fixedly connected with the refrigerant conveying pipe.
Preferably, the heat exchange assembly further comprises a housing for accommodating the base and the radiating fins, openings are formed in two ends of the housing, and one end of the housing is arranged corresponding to the air inlet of the air supply pipe fitting.
Preferably, the fan can be arranged in the air supply pipe fitting; the fan also can be arranged between the air inlet of the air supply pipe fitting and the heat exchange assembly, and the air outlet side of the fan faces the air inlet of the air supply pipe fitting.
Preferably, the air supply pipe fitting includes a first connection pipe, a second connection pipe, and at least two third connection pipes; one end of the first connecting pipe is an air inlet of the air supply pipe fitting, and the other end of the first connecting pipe is communicated with the second connecting pipe; the third connecting pipe is communicated with the second connecting pipe, at least one first air outlet is formed in the third connecting pipe and faces the outdoor unit fins, and the first air outlet is an air outlet of the air supply pipe fitting.
Preferably, the third connecting pipe is laid on the surface of the windward side of the outdoor unit, the first air outlet is formed in the side, opposite to the surface of the windward side of the outdoor unit, of the third connecting pipe, and the first air outlet faces the outdoor unit fins.
Preferably, the air supply pipe fitting comprises a fourth connecting pipe, a fifth connecting pipe and a transmission assembly, one end of the fourth connecting pipe is an air inlet of the air supply pipe fitting, and the other end of the fourth connecting pipe is communicated with the fifth connecting pipe; at least one second air outlet hole is formed in the fifth connecting pipe, the second air outlet hole faces the outdoor unit fin, and the second air outlet hole is an air outlet of the air supply pipe fitting; the transmission assembly is connected with the fifth connecting pipe and used for controlling the fifth connecting pipe to move along the surface of the outdoor unit fin.
Preferably, the fifth connecting pipe is laid on the surface of the windward side of the outdoor unit, the second air outlet is formed in the side, opposite to the surface of the windward side of the outdoor unit, of the fifth connecting pipe, and the second air outlet faces the outdoor unit fins.
Preferably, the indoor defrosting device further comprises a fan control circuit for controlling the start or stop of the fan; the fan control circuit comprises a temperature sensor for sensing outdoor environment temperature and outputting a temperature signal, and a control module for receiving the temperature signal and outputting a control signal according to the temperature signal to control the fan to start or stop;
the temperature sensor is arranged on the outer surface of the outdoor unit, the temperature signal output end of the temperature sensor is connected with the temperature signal input end of the control module, and the control signal output end of the control module is connected with the fan.
The invention provides an air conditioner, which is provided with an outdoor unit defrosting device, wherein the outdoor unit defrosting device comprises a heat exchange assembly and an air supply assembly; wherein,
the heat exchange assembly is arranged at a refrigerant conveying pipe between an exhaust port of an air conditioner compressor and the four-way valve and is used for controlling heat exchange between the refrigerant conveying pipe and outside air;
the air supply assembly comprises an air supply pipe fitting and a fan, the air supply pipe fitting comprises an air inlet and an air outlet, the air inlet of the air supply pipe fitting corresponds to the heat exchange assembly, the air outlet of the air supply pipe fitting corresponds to the fins of the outdoor unit, and the fan controls air after heat exchange with the heat exchange assembly to flow into the air supply pipe fitting from the air inlet so as to convey the air after heat exchange with the heat exchange assembly to the fins of the outdoor unit.
The invention provides an indoor unit defrosting device.A heat exchange assembly is arranged between an air outlet of a compressor of an air conditioner and a refrigerant conveying pipe between four-way valves. The heat exchange assembly accelerates the heat exchange between the high-temperature refrigerant and the air outside the conveying pipe. The air supply pipe fitting can convey the air after heat exchange to the fins of the outdoor unit, so that the temperature of the fins of the outdoor unit is increased, and the fins are prevented from frosting. The invention intensively transmits the residual heat generated in the operation process of the air conditioner to the fins of the outdoor unit of the air conditioner, and improves the temperature of the fins of the outdoor unit, thereby achieving the effect of defrosting the fins of the outdoor unit. Because the defrosting function can be realized in the heating mode of the air conditioner, compared with the existing air conditioner which needs to be started and stopped frequently for defrosting, the air conditioner can improve the comfort level of a user when in use. On the other hand, the outdoor unit defrosting device of the invention intensively utilizes the residual heat generated in the working process of the air conditioner and does not reduce the heating capacity of the air conditioner, thereby ensuring the heating efficiency of the air conditioner.
Drawings
Fig. 1 is a schematic structural view illustrating an installation state of an outdoor unit defrosting device according to the present invention;
FIG. 2 is a schematic diagram of a portion of the explosion of FIG. 1;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
FIG. 4 is a schematic view of an air supply pipe of the outdoor unit defrosting apparatus according to the first embodiment of the present invention;
FIG. 5 is a partially enlarged view of the third connecting tube shown in FIG. 4;
fig. 6 is a schematic structural view of an air supply pipe of an outdoor unit defrosting apparatus according to a second embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention provides an outdoor defrosting device.
Referring to fig. 1 to 3, fig. 1 is a schematic structural view illustrating an installation state of an outdoor unit defrosting apparatus according to the present invention; FIG. 2 is a schematic diagram of a portion of the explosion of FIG. 1; fig. 3 is a partially enlarged schematic view of a portion a in fig. 2. The outdoor unit defrosting device provided by the embodiment is arranged on an air conditioner. As known to those skilled in the art, the air conditioner includes an indoor unit (not shown), an outdoor unit 1, a compressor 2, and a four-way valve (not shown). When the air conditioner starts a heating mode, the four-way valve connects the input end of the compressor 2 with the outdoor unit 1 and connects the output end of the compressor 2 with the indoor unit. The low-temperature liquid refrigerant passes through the outdoor unit 1 and exchanges heat with the outdoor environment, and the liquid refrigerant absorbs heat and evaporates into a gaseous refrigerant. The gaseous refrigerant enters the compressor 2, is compressed into a high-temperature high-pressure gaseous refrigerant by the compressor 2, is transmitted to the indoor unit, and exchanges heat with the indoor environment through the indoor unit, so that the effect of heating the indoor environment is achieved. The evaporation temperature of the refrigerant in the outdoor unit 1 decreases with the decrease of the outdoor environment temperature, and when the evaporation temperature is lower than 0 ℃, the surface of the heat exchanger of the outdoor unit 1 is easy to frost.
The outdoor unit defrosting device provided by the invention comprises a heat exchange assembly 4 and an air supply assembly 5.
The heat exchange assembly 4 is installed at the refrigerant conveying pipe 3 between the exhaust port of the air conditioner compressor 2 and the four-way valve. It should be noted that the discharge port of the air conditioner compressor 2 always outputs a high-temperature and high-pressure refrigerant regardless of whether the air conditioner is in a heating state or a cooling state. And the refrigeration and heating are switched by reversing the four-way valve. The heat exchange assembly 4 is disposed outside the refrigerant conveying pipe 3 between the exhaust port of the air conditioner compressor 2 and the four-way valve, so that heat exchange between a high-temperature refrigerant and air outside the refrigerant conveying pipe 3 can be promoted. Because the high-temperature refrigerant exchanges heat with the air, the temperature of the air around the heat exchange assembly 4 is improved to a certain extent.
The air supply assembly 5 comprises an air supply pipe 51 and a fan 52, the air supply pipe 51 comprises an air inlet and an air outlet, the air inlet of the air supply pipe 51 corresponds to the heat exchange assembly 4, the air outlet of the air supply pipe 51 corresponds to the fins 11 of the outdoor unit 1, and the fan 52 controls air after heat exchange with the heat exchange assembly 4 to flow into the air supply pipe 51 from the air inlet so as to convey the air after heat exchange with the heat exchange assembly 4 to the fins 11 of the outdoor unit 1. The fan 52 drives the air to flow, so that the heat-exchanged air can flow into the air supply pipe 51 and flow from the outlet of the air supply pipe 51 to the fins 11 of the outdoor unit 1. The heat exchange assembly 4, the air supply pipe 51 and the fan 52 can be arranged in sequence in various ways. There are roughly two main categories: the fan 52 blows air flow and the fan 52 sucks air flow. The first type: when the fan 52 blows air, the air outlet side of the fan 52 faces the heat exchange assembly 4, and the air inlet of the air supply pipe 5 faces the heat exchange assembly 4. When the fan 52 is started, air around the heat exchange assembly 4 is driven to flow into the air supply pipe 51. The second type: when the fan 52 draws air, the air inlet side of the fan 52 is arranged to face the heat exchange assembly 4, and the air outlet side of the fan 52 faces the air inlet of the air supply pipe 51. When the fan 52 is rotated, the fan 52 sucks air around the heat exchange unit 4, and blows the air at its air outlet side and drives the air into the air supply duct 51. In addition, the fan 52 can also be disposed inside the air supply pipe 51, as long as the air inlet side of the fan 52 faces the air inlet of the air supply pipe 51, and the air outlet side of the fan 52 faces the air outlet of the air supply pipe 51.
In this embodiment, the fan 52 is an axial flow fan, and the axial flow fan is disposed at the inlet of the air supply pipe 51. The air inlet side of the axial flow fan faces the heat exchange assembly 4, and the air outlet side of the axial flow fan faces the inside of the air supply pipe 51. When the ambient temperature of the outdoor unit 1 is low, specifically, lower than 0 ℃, the axial flow fan is started to rotate, so that negative pressure is formed inside the air supply pipe 51. The air inlet side of the axial flow fan sucks high-temperature air around the heat exchange assembly 4, so that the high-temperature air flows into the air supply pipe 51 and flows onto the fins 11 of the outdoor unit 1 from the air outlet of the air supply pipe 51, and the purpose of defrosting or preventing frosting of the outdoor unit 1 is achieved.
The indoor machine defrosting device provided by the invention is characterized in that a heat exchange assembly 4 is arranged between an air outlet of an air conditioner compressor 2 and a refrigerant conveying pipe 3 between four-way valves. The heat exchange assembly 4 accelerates the heat exchange between the high-temperature refrigerant and the air outside the conveying pipe. The air supply pipe 5 can transmit the heat-exchanged air to the fins 11 of the outdoor unit 1, thereby increasing the temperature of the fins 11 of the outdoor unit 1 and preventing the fins 11 from frosting. The invention intensively transmits the residual heat generated in the running process of the air conditioner to the fins 11 of the outdoor unit 1 of the air conditioner, and improves the temperature of the fins 11 of the outdoor unit 1, thereby achieving the defrosting effect of the fins 11 of the outdoor unit 1. Because the defrosting function can be realized in the heating mode of the air conditioner, compared with the existing air conditioner which needs to be started and stopped frequently for defrosting, the air conditioner can improve the comfort level of a user when in use. On the other hand, the outdoor unit defrosting device of the invention intensively utilizes the residual heat generated in the working process of the air conditioner and does not reduce the heating capacity of the air conditioner, thereby ensuring the heating efficiency of the air conditioner.
Specifically, the heat exchange assembly 4 includes a heat dissipation base 41 and a plurality of heat dissipation fins 42 disposed on the heat dissipation base 41, a through hole adapted to the refrigerant conveying pipe 3 is disposed on the heat dissipation base 41, and the heat dissipation base 41 is sleeved on the refrigerant conveying pipe 3 through the through hole and is fixedly connected to the refrigerant conveying pipe 3.
The heat sink 42 is mounted outside the refrigerant conveying pipe 3 through the heat sink base 41, and the heat sink 42 is mainly used to promote heat exchange between the high-temperature refrigerant and the air. Specifically, the heat sink 42 may be made of a metal material having a good thermal conductivity, such as aluminum or copper. In order to reduce the cost of the product, aluminum is preferably used. In order to improve the heat dissipation efficiency, the outer surface of the heat dissipation fin 42 is provided with a wave shape or a corrugated shape to enlarge the heat dissipation area of the heat sink 41. In the present embodiment, the heat dissipation plate 42 made of an aluminum material is attached to the refrigerant transport pipe 3 between the compressor 2 and the four-way valve via the heat dissipation base 41, and the outer surface of the heat dissipation plate 42 is corrugated. The air inlet of the air supply pipe 51 faces the heat sink 42.
Further, the heat exchanging assembly 4 further includes a housing 43 for accommodating the base and the heat sink 42, two ends of the housing 43 are opened, and one end of the housing 43 is disposed corresponding to the air inlet of the air supply pipe 51.
In this embodiment, an air passage is formed between the two openings of the housing 43, and one end of the housing 43 faces the air inlet of the air supply pipe 51. When the blower 52 is activated to supply air, air enters the interior of the housing 43 through an opening in the housing 43. The air is heat-exchanged with the high-temperature refrigerant, and then discharged from the other outlet, and is then sent to the fins 11 of the outdoor unit 1 through the air-sending pipe 51. The casing 43 of the heat exchange assembly 4 can prevent the air after heat exchange with the high temperature refrigerant from dissipating, so that the air after heat exchange is more concentrated, and the efficiency of the air supply pipe 51 for transmitting hot air is improved, thereby improving the defrosting efficiency of the outdoor unit defrosting device.
Further, based on the above embodiment, the air supply assembly 5 further includes a connecting piece 53, and the connecting piece 53 is disposed between the air supply pipe 51 and the heat exchange assembly 4, and is used for connecting the heat exchange assembly 4 and the air supply pipe 51, so that air after heat exchange with the heat exchange assembly 4 can flow into the air supply pipe 51. The connecting member 53 is a flared cavity having a first open end and a second open end. The first open end is a flared end, the first open end faces the heat exchange assembly 4, and the second open end is communicated with an air inlet of the air supply pipe fitting 51. It will be appreciated that when the housing 43 described above is employed, the first open end of the connector 53 is connected to and extends through an open end of the housing 43. When the fan 52 is disposed between the air inlet of the air supply pipe 51 and the heat exchange module 4, the fan 52 is preferably accommodated in the connecting member 53. The connecting piece 53 can prevent the hot air after heat exchange with the heat exchange assembly 4 from dissipating, so that the hot air conveying efficiency is improved, and the defrosting efficiency of the outdoor unit defrosting device is improved. It should be noted that the fan 52 may be disposed inside the through hole of the connector 53.
Specifically, the specific structure of the air supply pipe member 51 may be set according to actual needs.
Referring to fig. 4 and 5 in combination, for example, in the first embodiment, air supply duct member 51 includes first connection pipe 511B, second connection pipe 512B, and at least two third connection pipes 513B. One end of the first connection pipe 511B is an air inlet of the air supply pipe 51, and the other end is communicated with the second connection pipe 512B. The third connecting pipe 513B is communicated with the second connecting pipe 512B, and the third connecting pipe 513B is provided with at least one first air outlet 5131B, the first air outlet 5131B is disposed toward the fins 11 of the outdoor unit 1, and the first air outlet 5131B is an air outlet of the air supply pipe 51.
It should be noted that the number of the third connection pipes 513B may be set according to the area size of the fins 11 of the actual outdoor unit 1. When the air conditioner starts the heating mode and the blower fan 52 starts the air supply, the first connection pipe 511B transfers the air heat-exchanged with the heat exchange assembly 4 to the second connection pipe 512B. Second connection tube 512B then diverts air to third connection tube 513B. The first outlet hole 5131B of the third connection pipe 513B faces the fins 11 of the outdoor unit 1. In this embodiment, at least two third connecting pipes 513B are provided, so that the air outlet area is enlarged, the fins 11 can fully receive the hot air, and the defrosting efficiency of the outdoor unit 1 is improved.
Further, in the first embodiment, the third connecting pipes 513B are disposed on the windward side surface of the outdoor unit 1, the first air outlet 5131B is disposed on the opposite side of the third connecting pipes 513B to the windward side surface of the outdoor unit 1, and the first air outlet 5131B faces the fins 11 of the outdoor unit 1. It should be noted that the first air outlet 5131B is distributed along the length direction of the third connecting pipe 513B, so as to enlarge the air outlet area, and the fins 11 of the outdoor unit 1 can more fully receive the hot air, thereby improving the defrosting efficiency. It should be noted that, in order to ensure that the air flowing out of the first air outlet 5131B can reach the fins 11 of the outdoor unit 1, the aperture of the first air outlet 5131B is set to be small, so that the speed of the air outlet is higher, and therefore, the air can reach the fins 11 of the outdoor unit 1 with sufficient power.
Further, to enlarge the air outlet area of each third connection pipe 513B, the first air outlet 5131B of the third connection pipe 513B may be disposed in different orientations. When the outdoor unit 1 is installed, the plurality of third connecting pipes 513B are laid on the windward side surface of the outdoor unit 1, and the first air outlet 5131B of each third connecting pipe 513B faces the fins 11 of the outdoor unit 1. When the air supply is started, the hot air flows onto the fins 11 of the outdoor unit 1 from different directions, so that the air outlet area is further enlarged, the fins 11 of the outdoor unit 1 can more fully receive the hot air, and the defrosting efficiency of the outdoor unit 1 can be improved.
Referring to fig. 6, in the second embodiment, the air supply pipe 51 includes a fourth connection pipe 511C, a fifth connection pipe 512C and a transmission assembly 513C, one end of the fourth connection pipe 511C is an air inlet of the air supply pipe 51, and the other end is communicated with the fifth connection pipe 512C. The fifth connecting pipe 512C is provided with at least one second air outlet (not shown in the figure) facing the fins 11 of the outdoor unit 1, and the second air outlet is an air outlet of the air supply pipe 51. The driving assembly 513C is connected to the fifth connecting pipe 512C, and is used for controlling the fifth connecting pipe 512C to move along the surface of the fins 11 of the outdoor unit 1.
When the air conditioner starts the heating mode and the blower 52 starts to supply air, the fourth connection pipe 511C transmits the air heat-exchanged with the heat exchange assembly 4 to the fifth connection pipe 512C, and it should be noted that the fourth connection pipe 511C is a hose, so that the requirement of the position change of the fifth connection pipe 512C can be fully satisfied. One fifth connection pipe 512C is provided, and the fifth connection pipe 512C can reciprocate along the windward side surface of the outdoor unit 1. One end of the fourth connection pipe 511C is fixed to the air conditioner, and the other end is connected to the fifth connection pipe 512C. The second air outlet of the fifth connecting pipe 512C faces the fins 11 of the outdoor unit 1. The driving assembly 513C is also activated when the fan 52 is activated, and the driving assembly 513C can drive the fifth connecting pipe 512C to reciprocate along the outer surface of the windward side of the outdoor unit 1, so that the hot air blown from the fifth connecting pipe 512C can sufficiently reach each corner of the fins 11 of the outdoor unit 1. It should be noted that the transmission assembly 513C only needs to drive the fifth connection pipe 512C to reciprocate along the windward side surface of the outdoor unit 1, and the specific structure of the transmission assembly is not limited in this embodiment.
Further, in the second embodiment, the fifth connecting pipe 512C is laid on the windward side surface of the outdoor unit 1, the second air outlet is formed on the opposite side of the fifth connecting pipe 512C to the windward side surface of the outdoor unit 1, and the second air outlet faces the fins 11 of the outdoor unit 1. It should be noted that the second air outlet holes are distributed along the length direction of the fifth connecting pipe 512C, so that the air outlet area is enlarged, the fins 11 of the outdoor unit 1 can more sufficiently receive the hot air, and the defrosting efficiency is improved. It should be noted that, in order to ensure that the air flowing out from the second air outlet holes can reach the fins 11 of the outdoor unit 1, the aperture of the second air outlet holes is set to be small, so that the speed of the outlet air is greater, and therefore, the air can reach the fins 11 of the outdoor unit 1 with sufficient power.
Further, in order to further enlarge the air outlet area of the fifth connecting pipe 512C, the second air outlet holes may be arranged in different orientations. When installed, the fifth connecting pipe 512C is laid on the windward side surface of the outdoor unit 1, and the second air outlet of the fifth connecting pipe 512C faces the fins 11 of the outdoor unit 1. When the air supply is started, the hot air flows onto the fins 11 of the outdoor unit 1 from different directions, so that the air outlet area is further enlarged, the fins 11 of the outdoor unit 1 can more fully receive the hot air, and the defrosting efficiency of the outdoor unit 1 can be improved.
Further, the outdoor unit defrosting apparatus further includes a fan 52 control circuit (not shown) for controlling the start or stop of the fan 52. The fan 52 control circuit comprises a temperature sensor for sensing the outdoor environment temperature and outputting a temperature signal, and a control module for receiving the temperature signal and outputting a control signal according to the temperature signal to control the fan 52 to start or stop. Wherein, the temperature sensor is arranged on the outer surface of the outdoor unit 1, the temperature signal output end of the temperature sensor is connected with the temperature signal input end of the control module, and the control signal output end of the control module is connected with the fan 52.
In the present embodiment, a temperature sensor is disposed outside the outdoor unit 1 to detect the temperature of the outdoor environment in real time, and convert the detected temperature into a voltage value to be transmitted to the control module. When the outdoor temperature detected by the temperature sensor is lower than a preset value, such as lower than 0 ℃. The control module controls the fan 52 to be energized and start operation. The fan 52 is operated to transfer hot air around the heat exchange unit 4 to the fins 11 of the outdoor unit 1, thereby defrosting or preventing frost formation. When the outdoor temperature is high, the control module controls the fan 52 to be powered off and stops delivering hot air. The fan 52 control circuit arranged in the outdoor unit defrosting device realizes the intelligent control of the start and stop of the fan 52, thereby playing the role of saving electric energy.
The invention also provides an air conditioner which comprises an outdoor unit defrosting device. The structure of the outdoor unit defrosting device can refer to the above embodiments, and is not described herein again. It should be understood that, since the air conditioner of the present embodiment adopts the technical solution of the outdoor unit defrosting device, the air conditioner has all the beneficial effects of the outdoor unit defrosting device.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. An outdoor defrosting device is characterized by comprising a heat exchange assembly and an air supply assembly; wherein,
the heat exchange assembly is arranged at a refrigerant conveying pipe between an exhaust port of an air conditioner compressor and the four-way valve and is used for controlling heat exchange between the refrigerant conveying pipe and outside air;
the air supply assembly comprises an air supply pipe fitting and a fan, the air supply pipe fitting comprises an air inlet and an air outlet, the air inlet of the air supply pipe fitting corresponds to the heat exchange assembly, the air outlet of the air supply pipe fitting corresponds to the fins of the outdoor unit, and the fan controls air after heat exchange with the heat exchange assembly to flow into the air supply pipe fitting from the air inlet so as to convey the air after heat exchange with the heat exchange assembly to the fins of the outdoor unit.
2. The outdoor unit defrosting device of claim 1, wherein the heat exchanging assembly comprises a heat dissipating base and a plurality of heat dissipating fins disposed on the heat dissipating base, the heat dissipating base is provided with through holes adapted to the refrigerant conveying pipes, and the heat dissipating base is sleeved on the refrigerant conveying pipes through the through holes and is fixedly connected to the refrigerant conveying pipes.
3. The outdoor unit defrosting apparatus of claim 2, wherein the heat exchanging unit further comprises a casing for accommodating the base and the heat dissipating fins, the casing is opened at both ends, and one end of the casing is disposed corresponding to the air inlet of the air supply pipe.
4. An outdoor unit defrosting apparatus as claimed in claim 1, wherein the fan is installed in the blowing pipe member; the fan also can be arranged between the air inlet of the air supply pipe fitting and the heat exchange assembly, and the air outlet side of the fan faces the air inlet of the air supply pipe fitting.
5. The outdoor unit defrosting apparatus of claim 1, wherein the blowing pipe member comprises a first connection pipe, a second connection pipe, and at least two third connection pipes; one end of the first connecting pipe is an air inlet of the air supply pipe fitting, and the other end of the first connecting pipe is communicated with the second connecting pipe; the third connecting pipe is communicated with the second connecting pipe, at least one first air outlet is formed in the third connecting pipe and faces the outdoor unit fins, and the first air outlet is an air outlet of the air supply pipe fitting.
6. The outdoor unit defrosting apparatus of claim 5, wherein the third connecting pipe is installed on a windward side surface of the outdoor unit, the first outlet hole is installed on a side of the third connecting pipe opposite to the windward side surface of the outdoor unit, and the first outlet hole faces the outdoor unit fin.
7. The outdoor unit defrosting apparatus of claim 1, wherein the air supply pipe member comprises a fourth connection pipe, a fifth connection pipe and a transmission assembly, one end of the fourth connection pipe is an air inlet of the air supply pipe member, and the other end of the fourth connection pipe is communicated with the fifth connection pipe; at least one second air outlet hole is formed in the fifth connecting pipe, the second air outlet hole faces the outdoor unit fin, and the second air outlet hole is an air outlet of the air supply pipe fitting; the transmission assembly is connected with the fifth connecting pipe and used for controlling the fifth connecting pipe to move along the surface of the outdoor unit fin.
8. The outdoor unit defrosting apparatus of claim 7, wherein the fifth connecting pipe is installed on a windward side surface of the outdoor unit, the second outlet hole is installed on a side of the fifth connecting pipe opposite to the windward side surface of the outdoor unit, and the second outlet hole faces the outdoor unit fin.
9. The outdoor unit defrosting apparatus of claim 1, further comprising a fan control circuit for controlling the start or stop of the fan; the fan control circuit comprises a temperature sensor for sensing outdoor environment temperature and outputting a temperature signal, and a control module for receiving the temperature signal and outputting a control signal according to the temperature signal to control the fan to start or stop;
the temperature sensor is arranged on the outer surface of the outdoor unit, the temperature signal output end of the temperature sensor is connected with the temperature signal input end of the control module, and the control signal output end of the control module is connected with the fan.
10. An air conditioner, comprising the outdoor unit defrosting apparatus of any one of claims 1 to 9.
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| CN201410264724.7A CN105318453B (en) | 2014-06-13 | 2014-06-13 | Outdoor unit defrosting device and air conditioner |
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| CN111750693A (en) * | 2020-07-08 | 2020-10-09 | 华北电力科学研究院有限责任公司 | Heat exchange equipment and indirect air cooling system |
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