CN110411085A - anti-freezing heat exchange assembly and air conditioner defrosting system - Google Patents
anti-freezing heat exchange assembly and air conditioner defrosting system Download PDFInfo
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- CN110411085A CN110411085A CN201910790394.8A CN201910790394A CN110411085A CN 110411085 A CN110411085 A CN 110411085A CN 201910790394 A CN201910790394 A CN 201910790394A CN 110411085 A CN110411085 A CN 110411085A
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- heat exchanger
- valve
- pipeline
- defrost
- refrigerant
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- 238000010257 thawing Methods 0.000 title claims abstract description 47
- 238000007710 freezing Methods 0.000 title abstract description 8
- 239000003507 refrigerant Substances 0.000 claims abstract description 88
- 238000004378 air conditioning Methods 0.000 claims abstract description 32
- 239000003921 oil Substances 0.000 claims description 26
- 238000010438 heat treatment Methods 0.000 claims description 15
- 238000001035 drying Methods 0.000 claims description 12
- 238000001914 filtration Methods 0.000 claims description 12
- 230000002528 anti-freeze Effects 0.000 claims description 10
- 239000010687 lubricating oil Substances 0.000 claims description 10
- 239000011521 glass Substances 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 18
- 238000000034 method Methods 0.000 abstract description 15
- 230000008569 process Effects 0.000 abstract description 14
- 230000008014 freezing Effects 0.000 abstract description 5
- 238000005336 cracking Methods 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000008676 import Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000004781 supercooling 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
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The invention relates to an anti-freezing heat exchange assembly and an air conditioner defrosting system, wherein the anti-freezing heat exchange assembly comprises a first heat exchanger and a defrosting heat exchange pipe arranged below the heat exchange pipe of the first heat exchanger, defrosting water flows downwards to the defrosting heat exchange pipe in a defrosting process, and the defrosting water is prevented from being deposited at the bottom of the first heat exchanger and being frozen. The first end of the defrosting heat exchange tube is communicated with a first refrigerant port of the first heat exchanger, and a refrigerant flows out of the first refrigerant port and enters the defrosting heat exchange tube after passing through the first heat exchanger during defrosting. The defrosting heat exchanger effectively avoids frost water from freezing on the defrosting heat exchanger, and avoids the condition that the unit fails due to cracking in the defrosting process of the air conditioning system.
Description
Technical field
The present invention relates to field of air conditioning, more particularly to a kind of antifreeze heat-exchanging component and air-conditioning defrosting system.
Background technique
Refrigeration and heating are realized using the heat absorption of refrigerant and exothermic process in air-conditioning system, into the low temperature refrigerant of evaporator
The case where easily causing frosting on evaporator during sucking.Therefore air-conditioning system will do it defrost after running for a period of time
Processing, the frost tied on evaporator is melted, so that the heat exchange efficiency of air-conditioning system maintains higher level.But it is general
The case where easily there is heat exchanger tube later and splits in air-conditioning system defrost, and unit fails.
Summary of the invention
Based on this, it is necessary to a kind of antifreeze heat-exchanging component and air-conditioning defrosting system are provided, to avoid occurring in air-conditioning system
The case where cracking, unit fails.
A kind of antifreeze heat-exchanging component, including First Heat Exchanger and the change being arranged in below the heat exchanger tube of the First Heat Exchanger
White heat exchanger tube, the first end of the defrost heat exchanger tube are connected to the first refrigerant mouth of the First Heat Exchanger, and refrigerant passes through when defrost
It is flowed out from the first refrigerant mouth into the defrost heat exchanger tube after crossing the First Heat Exchanger.
Above scheme provides a kind of antifreeze heat-exchanging component, is arranged by the lower section of the heat exchanger tube in the First Heat Exchanger
The defrost heat exchanger tube, so that melting in the First Heat Exchanger in defrost after refrigerant enters the First Heat Exchanger
Water flows downwardly to avoid defrosting water from being deposited on the First Heat Exchanger at the defrost heat exchanger tube, leads to first heat exchange
The case where freezing on the heat exchanger tube of device.And the refrigerant flowed out from the First Heat Exchanger when defrost can be from the defrost
The first end of heat exchanger tube enters the defrost heat exchanger tube, thus the case where further avoiding defrost heat exchange outside tube pipe ice making hair
It is raw, the case where air-conditioning system defrost is cracked in the process is effectively prevented, unit is avoided to fail.
A kind of air-conditioning defrosting system, including compressor, four-way valve, the second heat exchanger, electric expansion valve and above-mentioned antifreeze
Heat-exchanging component, the second end of the defrost heat exchanger tube are connected to the first refrigerant mouth of second heat exchanger, second heat exchange
The air inlet and exhaust outlet of second refrigerant mouth of device, the second refrigerant mouth of the First Heat Exchanger and the compressor respectively with
Four ports of the four-way valve are connected to, and form refrigerant circulation circuit, and the electric expansion valve is located at the defrost heat exchanger tube
On pipeline between second end and the first refrigerant mouth of second heat exchanger.
Above scheme provides a kind of air-conditioning defrosting system, and the high temperature of the exhaust outlet of compressor is cold in the process of defrosting
Matchmaker is understanding after the First Heat Exchanger subsequently into the defrost heat exchanger tube.It is located at described the based on the defrost heat exchanger tube
Below the heat exchanger tube of one heat exchanger, defrosting water can flow downwardly to the defrost heat exchanger tube in the process of defrosting, effectively avoid melting
The case where bottom that white water is deposited on the First Heat Exchanger freezes, pipeline is caused to burst.And because refrigerant is flowing through
It can be subsequently into the defrost heat exchanger tube, so that defrosting water effectively be avoided to tie on defrost heat exchanger tube after the First Heat Exchanger
Ice, and then the case where air-conditioning system defrost is cracked in the process is effectively prevented, avoid unit from failing.
The air-conditioning defrosting system further includes the first pipeline and the second pipeline in one of the embodiments, is connected in institute
Stating the pipeline between the second end of defrost heat exchanger tube and the first refrigerant mouth of second heat exchanger is third pipeline, the electronics
Expansion valve is arranged on the third pipeline, and one end of first pipeline is connected to the first end of the defrost heat exchanger tube, institute
The other end for stating the first pipeline is connected to the first refrigerant mouth of second heat exchanger, one end of second pipeline and described the
First refrigerant mouth of one heat exchanger is connected to, the other end of second pipeline and the third pipeline connection, and the third pipe
Road and the position of second pipeline connection are located at the electric expansion valve close to the first refrigerant mouth of second heat exchanger
Position, being connected to pipeline between the first end of the defrost heat exchanger tube and the first refrigerant mouth of the First Heat Exchanger is the
Four pipelines, refrigerant successively passes through second heat exchanger, the defrost heat exchanger tube, the electric expansion valve and described when heating
One heat exchanger, refrigerant successively passes through the First Heat Exchanger, the defrost heat exchanger tube, the electric expansion valve and described when defrost
Second heat exchanger.
First pipeline is equipped with the first valve in one of the embodiments, and second pipeline is equipped with the second valve,
The third pipeline is equipped with third valve, and the 4th pipeline is equipped with the 4th valve, and the third valve is located at the electronic expansion
Position of the valve on the side of the first refrigerant mouth of second heat exchanger, the third pipeline with second pipeline connection
Between the electric expansion valve and the third valve.
First valve, the second valve, third valve and the 4th valve are check valve in one of the embodiments, and described
The conducting direction of one valve is the direction for flowing to the defrost heat exchanger tube, and the conducting direction of second valve is to flow to described first to change
The direction of hot device, the conducting direction of the third valve are the direction for flowing to second heat exchanger, the conducting side of the 4th valve
To the direction to flow to the defrost heat exchanger tube.
First valve, the second valve, third valve and the 4th valve are switch electromagnetic valve in one of the embodiments, system
First valve described in when hot and the second valve are opened, and the third valve and the 4th valve are closed, when defrost the third valve and the 4th valve open
It opens, first valve and the second valve are closed.
It is additionally provided with device for drying and filtering on the third pipeline in one of the embodiments, the device for drying and filtering is located at
The electric expansion valve is close to the side of the defrost heat exchanger tube.
The first ball valve and the second ball valve, first ball are additionally provided on the third pipeline in one of the embodiments,
Valve and second ball valve are located at the two sides of the device for drying and filtering.
Second heat exchanger is shell and tube exchanger in one of the embodiments, and the First Heat Exchanger is air-cooled
Finned heat exchanger, the air cooling fin heat exchanger include axial flow blower and finned heat exchanger, and the axial flow blower is located at the wing
The top of piece heat exchanger, the defrost heat exchanger tube are located at the lower section of the heat exchanger tube of the finned heat exchanger.
The air-conditioning defrosting system further includes oil eliminator in one of the embodiments, the entrance of the oil eliminator
It is connected to the exhaust outlet of the compressor, the refrigerant exit of the oil eliminator is connected to the four-way valve, the oil eliminator
Lubricating oil outlet and the compressor air entry between be communicated with oil return line, the oil return line is equipped with
First shut-off valve, filter, liquid-sighting glass, solenoid valve, capillary and the second shut-off valve, first shut-off valve, the filter,
The liquid-sighting glass, the solenoid valve, the capillary and second shut-off valve are on the oil return line along lubricating oil
Flow direction is set gradually.
Detailed description of the invention
Fig. 1 is the system diagram of air-conditioning defrosting system described in the present embodiment.
Description of symbols:
10, air-conditioning defrosting system；11, compressor；12, four-way valve；13, the second heat exchanger；14, First Heat Exchanger；15, electric
Sub- expansion valve；16, defrost heat exchanger tube；17, oil eliminator；18, oil return line；181, the first shut-off valve；182, filter；
183, liquid-sighting glass；184, solenoid valve；185, capillary；186, the second shut-off valve；19, gas-liquid separator；20, the first pipeline；21,
First valve；30, the second pipeline；31, the second valve；40, third pipeline；41, third valve；42, device for drying and filtering；43, the first ball valve；
44, the second ball valve；50, the 4th pipeline；51, the 4th valve.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing to the present invention
Specific embodiment be described in detail.Many details are explained in the following description in order to fully understand this hair
It is bright.But the invention can be embodied in many other ways as described herein, those skilled in the art can be not
Similar improvement is done in the case where violating intension of the present invention, therefore the present invention is not limited to the specific embodiments disclosed below.
It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
" right side " and similar statement for illustrative purposes only, are not meant to be the only embodiment.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Each technical characteristic of embodiment described above can carry out arbitrarily
Combination, for simplicity of description, it is not all possible to each technical characteristic in above-described embodiment combination be all described, so
And as long as there is no contradiction in the combination of these technical features, it all should be considered as described in this specification.
As shown in Figure 1, providing a kind of antifreeze heat-exchanging component in one embodiment, including First Heat Exchanger 14 and setting
Defrost heat exchanger tube 16 below the heat exchanger tube of the First Heat Exchanger 14.The first end of the defrost heat exchanger tube 16 and described the
First refrigerant mouth of one heat exchanger 14 is connected to, and refrigerant is after the First Heat Exchanger 14 from the first refrigerant mouth stream when defrost
Enter the defrost heat exchanger tube 16 out.
In defrost after refrigerant enters First Heat Exchanger 14, the water that melts in the First Heat Exchanger 14 is to flowing down
At to the defrost heat exchanger tube 16, avoids defrosting water from being deposited on the First Heat Exchanger 14, lead to the First Heat Exchanger 14
Heat exchanger tube on the case where freezing.And the refrigerant flowed out from the First Heat Exchanger 14 when defrost can be from the defrost
The first end of heat exchanger tube 16 enters the defrost heat exchanger tube 16, to further avoid the feelings to freeze outside the defrost heat exchanger tube 16
Condition occurs, and effectively prevents the case where air-conditioning system defrost is cracked in the process, unit is avoided to fail.
Further, as shown in Figure 1, providing a kind of air-conditioning defrosting system 10 in another embodiment, including compression
Machine 11, four-way valve 12, the second heat exchanger 13, electric expansion valve 15 and above-mentioned antifreeze heat-exchanging component.The defrost heat exchanger tube 16
Second end be connected to the first refrigerant mouth of second heat exchanger 13.It is second refrigerant mouth of second heat exchanger 13, described
The air inlet and exhaust outlet of second refrigerant mouth of First Heat Exchanger 14 and the compressor 11 respectively with the four-way valve 12
The connection of four ports, forms refrigerant circulation circuit, the electric expansion valve 15 be located at the defrost heat exchanger tube 16 second end and
On pipeline between first refrigerant mouth of second heat exchanger 13.
As shown in Figure 1, the high temperature refrigerant of 11 exhaust outlet of compressor is changed by described first in the process of defrosting
It can be subsequently into the defrost heat exchanger tube 16 after hot device 14.It is located at the First Heat Exchanger 14 based on the defrost heat exchanger tube 16
Below heat exchanger tube, defrosting water can flow downwardly to the defrost heat exchanger tube 16 in the process of defrosting, and defrosting water is effectively avoided to deposit
The case where the bottom of the First Heat Exchanger 14 freezes, pipeline is caused to burst.And because refrigerant is flowing through described the
Heat can be provided subsequently into the defrost heat exchanger tube 16 after one heat exchanger 14, to also defrosting water effectively be avoided to change in defrost
It freezes on heat pipe 16, and then effectively prevents the case where air-conditioning system defrost is cracked in the process, unit is avoided to fail.
Further, refrigerant further can further increase the supercooling of the refrigerant in the defrost heat exchanger tube 16 with air heat-exchange
Degree improves unit efficiency to improve the heat exchange amount of unit mass refrigerant.
Specifically, second heat exchanger 13 can be shell and tube exchanger, and the First Heat Exchanger 14 can be fin
Heat exchanger or second heat exchanger 13 and the First Heat Exchanger 14 also can choose the heat exchanger of other forms, at this
In be not particularly limited.When second heat exchanger 13 is the shell and tube exchanger, the shell and tube exchanger heat exchange is obtained
The chilled water obtained can be used for the use of water heater supplying hot water.
During heating, the high temperature refrigerant of 11 exhaust outlet of compressor reaches described the by the four-way valve 12
Two heat exchangers 13, exchange heat in second heat exchanger 13, and heat is supplied to user's end equipment.In second heat exchanger
Refrigerant in 13 by heat exchange is subsequent successively after the electric expansion valve 15 and the First Heat Exchanger 14, passes through described four
Port valve 12 enters the compressor 11, forms refrigerant circulation circuit.
And when entering heating operations after defrost process, in order to further avoid on the defrost heat exchanger tube 16 at this time
The water freezing deposited when defrosting before, as shown in Figure 1, can be in the first end and second heat exchange of the defrost heat exchanger tube 16
First pipeline 20 is set between first refrigerant mouth of device 13, so that changing in heating operations by second heat exchanger 13
Refrigerant after heat is able to enter the defrost heat exchanger tube 16, avoids the water freezing outside defrost heat exchanger tube 16.
And when heating, refrigerant after the defrost heat exchanger tube 16 will be from the second end stream of the defrost heat exchanger tube 16
Out, the pipeline into connection between the second end of the defrost heat exchanger tube 16 and the first refrigerant mouth of second heat exchanger 13
In.If the pipeline being connected between the second end of the defrost heat exchanger tube 16 and the first refrigerant mouth of second heat exchanger 13 is
Third pipeline 40, then the electric expansion valve 15 is arranged on the third pipeline 40.And in order to enable heating operations normally into
Row needs to import the refrigerant in the third pipeline 40 in the First Heat Exchanger 14.For this purpose, as shown in Figure 1, can be into one
Step the second pipeline 30 of setting, one end of second pipeline 30 is connected to the third pipeline 40, second pipeline 30 it is another
One end is connected to the first refrigerant mouth of the First Heat Exchanger 14.And it is connected on the third pipeline 40 with second pipeline 30
Position be located at the electric expansion valve 15 close to the position of the first refrigerant mouth of second heat exchanger 13, thus described
Three pipelines 40 import refrigerant can be by the electric expansion valve 15 throttling diffusion before the First Heat Exchanger 14.
Further, as shown in Figure 1, first end and the First Heat Exchanger 14 of the connection in the defrost heat exchanger tube 16
Pipeline between first refrigerant mouth is the 4th pipeline 50.So that heating when refrigerant successively pass through second heat exchanger 13,
The defrost heat exchanger tube 16, the electric expansion valve 15 and the First Heat Exchanger 14, refrigerant successively passes through described when defrost
One heat exchanger 14, the defrost heat exchanger tube 16, the electric expansion valve 15 and second heat exchanger 13.
Further, in one embodiment, as shown in Figure 1, refrigerant being capable of basis in above each pipeline in order to ensure
Demand flowing when the above heating and defrost, can be arranged the first valve 21, second pipeline 30 on first pipeline 20
Third valve 41 is arranged on the third pipeline 40, the 4th valve 51 is arranged on the 4th pipeline 50 for the second valve 31 of upper setting.And institute
It states third valve 41 and is located at the electric expansion valve 15 close to the side of the first refrigerant mouth of second heat exchanger 13, the third
The position being connected on pipeline 40 with second pipeline 30 is between the electric expansion valve 15 and the third valve 41.
It should be noted that herein when for limiting the relative position on pipeline between two location points, it is used
Side or the other side refer to along the side or the other side in corresponding pipeline trend, are not necessarily referring to directional spatial relationships.
To be made after the defrost heat exchanger tube 16 by controlling the third valve 41 during heating
The refrigerant for flowing into the third pipeline 40 can only flow into the First Heat Exchanger 14 from second pipeline 30, complete heating operations
Middle refrigerant circulation.
And in the process of defrosting, then it can be by controlling first valve 21 and the second valve 31, so that the compressor
The high temperature refrigerants of 11 exhausts, which are merely able to flow into the defrost from the 4th pipeline 50 after the First Heat Exchanger 14, to be changed
Heat pipe 16 flows into the third pipeline 40 after the defrost heat exchanger tube 16, finally enters institute by the third pipeline 40
The second heat exchanger 13 is stated, compressor 11 is being flowed back to by second heat exchanger 13, is completing refrigerant circulation during defrost.
And specifically, as shown in Figure 1, in one embodiment, first valve 21, the second valve 31, third valve 41 and
Four valves 51 are check valve.The conducting direction of first valve 21 is the direction for flowing to the defrost heat exchanger tube 16, described second
The conducting direction of valve 31 is the direction for flowing to the First Heat Exchanger 14, and the conducting direction of the third valve 41 is to flow to described the
The direction of two heat exchangers 13, the conducting direction of the 4th valve 51 are the direction for flowing to the defrost heat exchanger tube 16.
To can only enter first pipeline 20 by the refrigerant of second heat exchanger 13 in heating operations, and
The defrost heat exchanger tube 16 can only be entered by first pipeline 20；Described in refrigerant entrance by the defrost heat exchanger tube 16
After third pipeline 40, second pipeline 30 can only flow under the cut-off effect of the third valve 41, and described the
Under the cut-off effect of four valves 51, the refrigerant in second pipeline 30 can only be last cold subsequently into the First Heat Exchanger 14
Matchmaker flows back to compressor 11 by the four-way valve 12 after the First Heat Exchanger 14 outflow.
In defrost, the high temperature refrigerant of 11 exhaust outlet of compressor is introduced into described first by the four-way valve 12 and changes
Hot device 14, under the cut-off effect of second valve 31 and first valve 21, by the refrigerant of the First Heat Exchanger 14
The defrost heat exchanger tube 16 can only be entered by the 4th pipeline 50, the refrigerant after exchanging heat in the defrost heat exchanger tube 16 is then
Into the third pipeline 40, subsequently into second heat exchanger 13.
Optionally, in one embodiment, first valve 21, the second valve 31, third valve 41 and the 4th valve 51 are out
Powered-down magnet valve.Open and-shut mode by controlling each switch electromagnetic valve adjusts the on-off of each pipeline.Specifically, in heating when institute
The first valve 21 and the second valve 31 is stated to open, the third valve 41 and the 4th valve 51 are closed, when defrost the third valve 41 and the 4th
Valve 51 is opened, and first valve 21 and the second valve 31 are closed.
Further, as shown in Figure 1, in one embodiment, being additionally provided with device for drying and filtering 42 on the third pipeline 40,
The device for drying and filtering 42 is located at the electric expansion valve 15 close to the side of the defrost heat exchanger tube 16.To pass through describedization
Filtering is first dried before entering the electric expansion valve 15 in the refrigerant of frostization heat pipe heat exchanging in the drier.
And in one embodiment, in order to further increase the convenience for replacing the device for drying and filtering 42, such as Fig. 1 institute
Show, the first ball valve 43 and the second ball valve 44, first ball valve 43 and second ball valve are additionally provided on the third pipeline 40
44 are located at the two sides of the device for drying and filtering 42.It, can be by described first when needing replacing the device for drying and filtering 42
Ball valve 43 and second ball valve 44 are closed, to avoid secondary refrigerant leakage in the third pipeline 40.
Further specifically, as shown in Figure 1, in one embodiment, the First Heat Exchanger 14 is air cooling fin heat exchange
Device, the air cooling fin heat exchanger include axial flow blower and finned heat exchanger, and the axial flow blower is located at the finned heat exchanger
Top, the defrost heat exchanger tube 16 is located at the lower section of the heat exchanger tube of the finned heat exchanger.
It is shown it should be noted that not distinguishing First Heat Exchanger 14 clearly with defrost heat exchanger tube 16 in Fig. 1, but
The two is combined and is shown, but the overlying relation between the defrost heat exchanger tube 16 and the First Heat Exchanger 14
It determines, the defrost heat exchanger tube 16 is located at the lower section of the First Heat Exchanger 14.
Further, in one embodiment, as shown in Figure 1, the air-conditioning defrosting system 10 further includes oil eliminator 17,
The entrance of the oil eliminator 17 is connected to the exhaust outlet of the compressor 11, the refrigerant exit of the oil eliminator 17 with it is described
Four-way valve 12 is connected to, and oil is communicated between the lubricating oil outlet of the oil eliminator 17 and the air entry of the compressor 11 and is returned
Flow tube road 18.It is separated to first pass through the oil eliminator 17 from the refrigerant of the vent of the compressor 11, it will
Lubricating oil is separated from refrigerant, and then lubricating oil flows back to the compressor 11 from the oil return line 18.
And as shown in Figure 1, the first shut-off valve 181, filter can further be arranged on the oil return line 18
182, liquid-sighting glass 183, solenoid valve 184, capillary 185 and the second shut-off valve 186, first shut-off valve 181, the filter
182, the liquid-sighting glass 183, the solenoid valve 184, the capillary 185 and second shut-off valve 186 are returned in the oil
It is set gradually on flow tube road 18 along lubricating oil flow direction.On the one hand lubricating oil in the oil return line 18 can flexibly be monitored
Flow back situation, on the other hand can flexibly control whether the progress for allowing lubricating oil reflux course.
Further, as shown in Figure 1, in one embodiment, to avoid the compressor 11 from occurring in the process of running
The case where absorbing gas belt liquid, in the air-conditioning defrosting system 10, further setting gas-liquid separator 19, the gas-liquid separator 19 connect
Lead between the air entry and the four-way valve 12 of the compressor 11.To enter the compressor by the four-way valve 12
11 refrigerant need to first pass through the gas-liquid separator 19, extend the service life of the compressor 11.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of antifreeze heat-exchanging component, which is characterized in that including First Heat Exchanger (14) and be arranged in the First Heat Exchanger
(14) the defrost heat exchanger tube (16) below heat exchanger tube, the first end of the defrost heat exchanger tube (16) and the First Heat Exchanger
(14) the first refrigerant mouth connection, when defrost refrigerant after the First Heat Exchanger (14) from the first refrigerant mouth flow out into
Enter the defrost heat exchanger tube (16).
2. a kind of air-conditioning defrosting system (10), which is characterized in that including compressor (11), four-way valve (12), the second heat exchanger
(13), electric expansion valve (15) and antifreeze heat-exchanging component described in claim 1, the second end of the defrost heat exchanger tube (16) with
First refrigerant mouth of second heat exchanger (13) is connected to, and the second refrigerant mouth of second heat exchanger (13), described first are changed
The air inlet and exhaust outlet of second refrigerant mouth of hot device (14) and the compressor (11) respectively with the four-way valve (12)
Four port connections, form refrigerant circulation circuit, and the electric expansion valve (15) is located at connection in the defrost heat exchanger tube (16)
Second end and second heat exchanger (13) the first refrigerant mouth between pipeline on.
3. air-conditioning defrosting system (10) according to claim 2, which is characterized in that further include the first pipeline (20) and second
Pipeline (30) is connected between the second end of the defrost heat exchanger tube (16) and the first refrigerant mouth of second heat exchanger (13)
Pipeline be third pipeline (40), the electric expansion valve (15) is arranged on the third pipeline (40), first pipeline
(20) one end is connected to the first end of the defrost heat exchanger tube (16), the other end and described second of first pipeline (20)
First refrigerant mouth of heat exchanger (13) is connected to, and the first of one end of second pipeline (30) and the First Heat Exchanger (14) is cold
Matchmaker mouthful connection, the other end of second pipeline (30) are connected to the third pipeline (40), and on the third pipeline (40)
The position being connected to second pipeline (30) is located at the electric expansion valve (15) close to the of second heat exchanger (13)
The position of one refrigerant mouth is connected to the first end in the defrost heat exchanger tube (16) and first refrigerant of the First Heat Exchanger (14)
Pipeline between mouthful is the 4th pipeline (50), and refrigerant successively passes through second heat exchanger (13), the defrost heat exchange when heating
Manage (16), the electric expansion valve (15) and the First Heat Exchanger (14), refrigerant successively exchanges heat by described first when defrost
Device (14), the defrost heat exchanger tube (16), the electric expansion valve (15) and second heat exchanger (13).
4. air-conditioning defrosting system (10) according to claim 3, which is characterized in that first pipeline (20) is equipped with the
One valve (21), second pipeline (30) are equipped with the second valve (31), and the third pipeline (40) is equipped with third valve (41), institute
The 4th pipeline (50) is stated equipped with the 4th valve (51), the third valve (41) is located at the electric expansion valve (15) close described the
The side of first refrigerant mouth of two heat exchangers (13), the position being connected to second pipeline (30) on the third pipeline (40)
Between the electric expansion valve (15) and the third valve (41).
5. air-conditioning defrosting system (10) according to claim 4, which is characterized in that first valve (21), the second valve
(31), third valve (41) and the 4th valve (51) are check valve, and the conducting direction of first valve (21) is to flow to the defrost
The direction of heat exchanger tube (16), the conducting direction of second valve (31) is the direction for flowing to the First Heat Exchanger (14), described
The conducting direction of third valve (41) is the direction for flowing to second heat exchanger (13), and the conducting direction of the 4th valve (51) is
Flow to the direction of the defrost heat exchanger tube (16).
6. air-conditioning defrosting system (10) according to claim 4, which is characterized in that first valve (21), the second valve
(31), third valve (41) and the 4th valve (51) are switch electromagnetic valve, when heating described in the first valve (21) and the second valve (31) open
Open, the third valve (41) and the 4th valve (51) are closed, when defrost the third valve (41) and the 4th valve (51) unlatching, described the
One valve (21) and the second valve (31) are closed.
7. air-conditioning defrosting system (10) according to claim 3, which is characterized in that be additionally provided on the third pipeline (40)
Device for drying and filtering (42), the device for drying and filtering (42) are located at the electric expansion valve (15) close to the defrost heat exchanger tube (16)
Side.
8. air-conditioning defrosting system (10) according to claim 7, which is characterized in that be additionally provided on the third pipeline (40)
First ball valve (43) and the second ball valve (44), first ball valve (43) and second ball valve (44) are located at the drying
The two sides of filter (42).
9. according to the described in any item air-conditioning defrosting systems (10) of claim 2 to 8, which is characterized in that second heat exchanger
It (13) is shell and tube exchanger, the First Heat Exchanger (14) is air cooling fin heat exchanger, and the air cooling fin heat exchanger includes
Axial flow blower and finned heat exchanger, the axial flow blower are located at the top of the finned heat exchanger, the defrost heat exchanger tube (16)
Positioned at the lower section of the heat exchanger tube of the finned heat exchanger.
10. according to the described in any item air-conditioning defrosting systems (10) of claim 2 to 8, which is characterized in that further include oil eliminator
(17), the entrance of the oil eliminator (17) is connected to the exhaust outlet of the compressor (11), the oil eliminator (17) it is cold
Matchmaker outlet is connected to the four-way valve (12), the lubricating oil outlet of the oil eliminator (17) and the air-breathing of the compressor (11)
It is communicated with oil return line (18) between mouthful, the oil return line (18) is equipped with the first shut-off valve (181), filter
(182), liquid-sighting glass (183), solenoid valve (184), capillary (185) and the second shut-off valve (186), first shut-off valve
(181), the filter (182), the liquid-sighting glass (183), the solenoid valve (184), the capillary (185) and described
Two shut-off valves (186) are set gradually on the oil return line (18) along lubricating oil flow direction.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910790394.8A CN110411085A (en) | 2019-08-26 | 2019-08-26 | anti-freezing heat exchange assembly and air conditioner defrosting system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910790394.8A CN110411085A (en) | 2019-08-26 | 2019-08-26 | anti-freezing heat exchange assembly and air conditioner defrosting system |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10205933A (en) * | 1997-01-20 | 1998-08-04 | Fujitsu General Ltd | Air conditioner |
| CN104729163A (en) * | 2013-12-24 | 2015-06-24 | 珠海格力电器股份有限公司 | Air conditioning system and defrosting control method thereof |
| CN207268552U (en) * | 2017-09-05 | 2018-04-24 | 宁波港菱环境科技股份有限公司 | A kind of mechanism for preventing heat pump apparatus of air source exchanger base from freezing |
| CN208901670U (en) * | 2018-08-13 | 2019-05-24 | 瀚润联合高科技发展（北京）有限公司 | Evaporate cold low form total heat recovery Air-Cooled Heat Pump Unit |
-
2019
- 2019-08-26 CN CN201910790394.8A patent/CN110411085A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10205933A (en) * | 1997-01-20 | 1998-08-04 | Fujitsu General Ltd | Air conditioner |
| CN104729163A (en) * | 2013-12-24 | 2015-06-24 | 珠海格力电器股份有限公司 | Air conditioning system and defrosting control method thereof |
| CN207268552U (en) * | 2017-09-05 | 2018-04-24 | 宁波港菱环境科技股份有限公司 | A kind of mechanism for preventing heat pump apparatus of air source exchanger base from freezing |
| CN208901670U (en) * | 2018-08-13 | 2019-05-24 | 瀚润联合高科技发展（北京）有限公司 | Evaporate cold low form total heat recovery Air-Cooled Heat Pump Unit |
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