CN206739578U - A kind of double-tube heat exchanger and air-conditioning - Google Patents
A kind of double-tube heat exchanger and air-conditioning Download PDFInfo
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- CN206739578U CN206739578U CN201621354473.2U CN201621354473U CN206739578U CN 206739578 U CN206739578 U CN 206739578U CN 201621354473 U CN201621354473 U CN 201621354473U CN 206739578 U CN206739578 U CN 206739578U
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- valve
- heat exchanger
- temperature
- sleeve pipe
- double
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 18
- 239000007788 liquid Substances 0.000 claims abstract description 51
- 239000003507 refrigerant Substances 0.000 claims abstract description 15
- 238000006073 displacement reaction Methods 0.000 claims abstract description 10
- 238000009423 ventilation Methods 0.000 claims description 7
- 230000000740 bleeding effect Effects 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 5
- 230000002159 abnormal effect Effects 0.000 abstract description 10
- 230000009172 bursting Effects 0.000 abstract description 9
- 230000008014 freezing Effects 0.000 abstract description 9
- 238000007710 freezing Methods 0.000 abstract description 9
- 230000007423 decrease Effects 0.000 abstract description 3
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 abstract 1
- 238000013461 design Methods 0.000 description 9
- 238000005457 optimization Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 230000002528 anti-freeze Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000003245 working effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011796 hollow space material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000002000 scavenging effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model discloses a kind of double-tube heat exchanger, including hollow sleeve pipe, the heat exchange liquid pipeline and refrigerant pipeline of mutual heat conduction are included in sleeve pipe, is close to sleeve side walls and is provided with temperature-sensitive bag, thermal expansion medium is accommodated in temperature-sensitive bag；The low spot of heat exchange liquid pipeline is provided with and communicated with pressure exhaust-valve, and temperature-sensitive bag is connected by connecting tube and the control terminal of pressure exhaust-valve, by the expansion or shrinkage of thermal expansion medium, the closing of corresponding driving pressure exhaust-valve or opening.When abnormal conditions occurs in system under low temperature environment, temperature anomaly in sleeve pipe reduces, thermal expansion medium temperature in temperature-sensitive bag decreases volume reduction, so the control pressure provided the valve element of pressure exhaust-valve reduces, making valve element corresponding displacement occur causes pressure exhaust-valve to open, the heat exchanging liquid discharge in heat exchange liquid pipeline connected, freezes to cause the situation of pipeline bursting by freezing from the heat exchange liquid avoided in heat exchange liquid pipeline.The invention also discloses a kind of air-conditioning.
Description
Technical field
Technical field of refrigeration equipment is the utility model is related to, more specifically to a kind of double-tube heat exchanger, further relates to one
Kind air-conditioning
Background technology
At present, air conditioner and heat pump unit water-side heat is mostly shell-and-tube heat exchanger, water route (or other liquid such as oil)
Exchanged heat with refrigerant flow with reverse convection.This kind of heat exchanger is relatively low in environment temperature, during such as environment temperature≤0 DEG C, or
Unit hinders for some reason, repair or it is prominent meet under powering-off state, system water route can not normal heating operation, if can not be in time by system water route
In water drain, as temperature reduces, water route, which freezes, will cause the bursting by freezing of system water route, and then influence unit operation, even result in
Unit is scrapped.
Prior art have using design temperature point carry out it is antifreeze, have and heater be set outside heat exchanger, these antifreeze sides
Method will lose antifreeze function when prominent chance has a power failure；There is low spot on heat exchangers that valve draining is set, valve is beaten during power-off
Begin to rehearse water, but this antifreeze method be possible to because incrustation scale or get rusty cause valve invalidation lose antifreeze function；Or another
Unit hinders, repairs and dashed forward for some reason in the case of a little meets manually draining when powering off out of service, and this method has certain hysteresis
Property, it is impossible to timely and effective water-drainage antifreezing, the risk of conduit failure are still very high.
In summary, air-conditioning heat exchanger how is efficiently solved in the case of abnormal work, easy bursting by freezing damage of pipeline etc.
Technical problem, it is current those skilled in the art's urgent problem.
Utility model content
In view of this, first purpose of the present utility model is to provide a kind of double-tube heat exchanger, the double-tube heat exchanger
Structure design can efficiently solve air-conditioning heat exchanger in the case of abnormal work, the technical problem such as easy bursting by freezing damage of pipeline,
Second purpose of the present utility model is to provide a kind of air-conditioning for including above-mentioned steam casing heat exchange of heat pipe.
In order to reach above-mentioned first purpose, the utility model provides following technical scheme：
A kind of double-tube heat exchanger, including hollow sleeve pipe, heat exchange liquid pipeline in described sleeve pipe including mutual heat conduction and cold
Matchmaker's pipeline, it is close to described sleeve pipe side wall and is provided with temperature-sensitive bag, thermal expansion medium is accommodated in the temperature-sensitive bag；The heat exchange liquid pipe
The low spot on road is provided with and communicated with pressure exhaust-valve, and the temperature-sensitive bag is terminated by the control of connecting tube and the pressure exhaust-valve
It is logical, by the expansion or shrinkage of thermal expansion medium, the closing of the corresponding driving pressure exhaust-valve or opening.
Preferably, in above-mentioned double-tube heat exchanger, described sleeve pipe is set in multi-turn rolled side by side, outside the temperature-sensitive bag
It is close to the inner circumferential setting that described sleeve pipe winds the encirclement structure to be formed week.
Preferably, in above-mentioned double-tube heat exchanger, the feed tube of the heat exchange liquid pipeline is arranged at its pipeline low spot, the pressure
Power exhaust-valve is arranged on the feed tube.
Preferably, in above-mentioned double-tube heat exchanger, the high point of the heat exchange liquid pipeline is provided with ventilation valve, for balancing
State the air pressure in heat exchange liquid pipeline.
Preferably, in above-mentioned double-tube heat exchanger, the ventilation valve includes being arranged at the heat exchange liquid pipeline high point difference
The check valve and air bleeding valve of position, the check valve are provided with the air pressure core assembly for being capable of air-breathing.
Preferably, in above-mentioned double-tube heat exchanger, the pressure exhaust-valve is provided with produces difference according to different driving pressure
The fine motion valve element of displacement, it is corresponding to be turned on and off valve when the displacement reaches switching threshold.
Preferably, in above-mentioned double-tube heat exchanger, the periphery of described sleeve pipe and temperature-sensitive bag is enclosed with heat-insulation layer.
Preferably, in above-mentioned double-tube heat exchanger, the refrigerant outlet pipe of described sleeve pipe is adjacent with the feed tube position, the set
The refrigerant inlet pipe of pipe is adjacent with the drain pipe position for the liquid pipeline that exchanges heat.
Preferably, in above-mentioned double-tube heat exchanger, the outer wall of described sleeve pipe is mounted with props up a spacing by described sleeve pipe
From bearing.
Double-tube heat exchanger provided by the utility model, including hollow sleeve pipe, interior the changing including mutual heat conduction of described sleeve pipe
Hydrothermal solution pipeline and refrigerant pipeline, it is close to described sleeve pipe side wall and is provided with temperature-sensitive bag, thermal expansion medium is accommodated in the temperature-sensitive bag；
The low spot of the heat exchange liquid pipeline is provided with and communicated with pressure exhaust-valve, and the temperature-sensitive bag passes through connecting tube and the pressure exhaust-valve
Control terminal connect, by the expansion or shrinkage of thermal expansion medium, the closing of the corresponding driving pressure exhaust-valve or opening.
This double-tube heat exchanger provided by the utility model, tighten to be sticked in sleeve pipe and put temperature-sensitive bag, and the thermal expansion in temperature-sensitive bag is situated between
Matter connects a pressure exhaust-valve by pipeline, and the emptying of the heat exchange liquid pipeline in sleeve pipe is realized by the exhaust-valve；Work as low temperature
There are abnormal conditions in system under environment, when the temperature in sleeve pipe starts abnormal reduce, in the temperature-sensitive bag that is brought into close contact with sleeve pipe
Thermal expansion medium temperature decreases, and volume contraction reduces, because temperature-sensitive bag passes through connecting tube and the control terminal of pressure exhaust-valve
Connection, so the control pressure provided the valve element of pressure exhaust-valve reduces, valve element is made corresponding displacement occur so that pressure is arranged
Empty valve is opened, and the heat exchanging liquid discharge in heat exchange liquid pipeline connected, this design effectively prevent due to system cut-off
Or circulate to stop or slow down during other failure situations, in heat exchanger and cause its interior temperature anomaly to reduce, so as to make heat exchange liquid pipeline
Interior heat exchange liquid freezes to cause the situation of pipeline bursting by freezing.The design is not required to manual operation, it is not necessary to introduces automatically controlled design, Ke Yitong
The regular movable valve of change of excess temperature pressure, be less prone to scale build-up or get rusty consolidation the problem of, its working effect
Stable, dangerous situation response in time, efficiently solves air-conditioning heat exchanger in the case of abnormal work, the skill of the easy bursting by freezing damage of pipeline
Art problem.
In order to reach above-mentioned second purpose, the utility model additionally provides a kind of air-conditioning, and the air-conditioning includes any of the above-described
Kind double-tube heat exchanger.Because above-mentioned double-tube heat exchanger has above-mentioned technique effect, the air-conditioning with the double-tube heat exchanger also should
With corresponding technique effect.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation for the double-tube heat exchanger that the utility model embodiment provides.
Marked in accompanying drawing as follows：
Sleeve pipe 1, temperature-sensitive bag 2, pressure exhaust-valve 3, feed tube 4, connecting tube 5, refrigerant outlet pipe 6, refrigerant inlet pipe 7, drain pipe
8th, check valve 9, air bleeding valve 10, bearing 11.
Embodiment
The utility model embodiment discloses a kind of double-tube heat exchanger, to solve air-conditioning heat exchanger in abnormal work situation
Under, the technical problem of the easy bursting by freezing damage of pipeline.
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
Referring to Fig. 1, Fig. 1 is the structural representation for the double-tube heat exchanger that the utility model embodiment provides.
The double-tube heat exchanger that the utility model embodiment provides, including hollow sleeve pipe 1, described sleeve pipe 1 is interior to be included mutually
The heat exchange liquid pipeline and refrigerant pipeline of heat conduction, it is close to the side wall of described sleeve pipe 1 and is provided with temperature-sensitive bag 2, accommodated in the temperature-sensitive bag 2
Thermal expansion medium；The low spot of the heat exchange liquid pipeline is provided with and communicated with pressure exhaust-valve 3, the temperature-sensitive bag 2 by connecting tube 5 with
The control terminal of the pressure exhaust-valve 3 is connected, by the expansion or shrinkage of thermal expansion medium, the corresponding driving pressure emptying
The closing of valve 3 or opening.
This double-tube heat exchanger provided in the present embodiment, tighten to be sticked in sleeve pipe and put temperature-sensitive bag, and by temperature-sensitive bag
Thermal expansion medium connects a pressure exhaust-valve by pipeline, and the row of the heat exchange liquid pipeline in sleeve pipe is realized by the exhaust-valve
It is empty.
When abnormal conditions occurs in system under low temperature environment, and the temperature in sleeve pipe starts abnormal reduce, closely pasted with sleeve pipe
Thermal expansion medium temperature in the temperature-sensitive bag of conjunction decreases, and volume contraction reduces, because temperature-sensitive bag passes through connecting tube and pressure
The control terminal connection of exhaust-valve, so the control pressure provided the valve element of pressure exhaust-valve reduces, valve element is made to occur corresponding
Displacement causes pressure exhaust-valve to open, and the heat exchanging liquid discharge in heat exchange liquid pipeline connected, this design effectively avoids
Circulation, which stops or slowed down, during due to system cut-off or other failure situations, in heat exchanger causes its interior temperature anomaly to reduce, from
And the heat exchange liquid in heat exchange liquid pipeline is made to freeze to cause the situation of pipeline bursting by freezing.
The design is not required to manual operation, it is not necessary to automatically controlled design is introduced, can be regular by the change of temperature, pressure
Movable valve, is less prone to scale build-up or the problem of consolidating of getting rusty, its working effect stabilization, dangerous situation respond in time, effectively
Air-conditioning heat exchanger is solved in the case of abnormal work, the technical problem of the easy bursting by freezing damage of pipeline.
For further optimization above-mentioned technical proposal, selected on the basis of above-described embodiment, in above-mentioned double-tube heat exchanger, institute
State sleeve pipe 1 to set in multi-turn rolled side by side, the encirclement knot that the winding of described sleeve pipe 1 is formed is close in the periphery of the temperature-sensitive bag 2
The inner circumferential of structure is set.
In the technical scheme that the present embodiment provides, sleeve pipe is shaped as the shape of multi-turn winding, and temperature-sensitive bag is arranged at
It is wound in the middle cavity formed, makes the size of temperature-sensitive bag and sleeve pipe wind the hollow space size to be formed and match,
In order to make the outer wall of the two is bonded to each other, the area of heat transfer is increased, to obtain better heat-conducting effect.
It is preferable on the basis of above-described embodiment for further optimization above-mentioned technical proposal, in above-mentioned double-tube heat exchanger,
The feed tube 4 of the heat exchange liquid pipeline is arranged at its pipeline low spot, and the pressure exhaust-valve 3 is arranged on the feed tube 4.
In the technical scheme that the present embodiment provides, feed tube is arranged to the low spot of pipeline, pressure exhaust-valve is arranged at
The position of feed tube, it can ensure when also to empty the liquid in pipeline, pressure exhaust-valve is opened and can thoroughly arrange liquid
It is empty；And because pressure exhaust-valve is arranged at entrance point, the heat exchange that will enter heat exchange liquid pipeline in evacuation procedure again can be made
Liquid can be expelled directly out not entering pipeline.
It is preferable on the basis of above-described embodiment for further optimization above-mentioned technical proposal, in above-mentioned double-tube heat exchanger,
The high point of the heat exchange liquid pipeline is provided with ventilation valve, for balancing the air pressure in the heat exchange liquid pipeline.
In the technical scheme that the present embodiment provides, by being connected inside scavenging air valve goalkeeper heat exchange liquid pipeline with ambient atmosphere,
When carrying out topping up or discharge opeing, the spatial volume to exchange heat in liquid pipeline changes, and corresponding can passes through heat exchange valve door-inhale
Enter or discharge air, to realize air pressure balance, the topping up of order heat exchange liquid pipeline or the operation of discharge opeing can be smoothed out.
It is preferable on the basis of above-described embodiment for further optimization above-mentioned technical proposal, in above-mentioned double-tube heat exchanger,
The ventilation valve includes the check valve 9 and air bleeding valve 10 for being arranged at the heat exchange liquid pipeline high point diverse location, described unidirectional
Valve 9 is provided with the air pressure core assembly for being capable of air-breathing.
In the technical scheme that the present embodiment provides, the check valve for air-breathing being provided separately and the exhaust for exhaust
Valve, the action of air-breathing is carried out by the core assembly of energy structure air-breathing in check valve, and itself also has liquid in limitation pipeline
The function of direction of flow, heat exchanging liquid reverse flow is prevented, and realize multi-purpose valve, without additionally increasing device device again；
And the action that the air bleeding valve by being provided separately is discharged, it ensure that the gas flow at each valve is single, this design
It is easy to ensure the hydraulic seal performance of air valve position, prevents from ventilation valve leakage.
It is preferable on the basis of above-described embodiment for further optimization above-mentioned technical proposal, in above-mentioned double-tube heat exchanger,
The pressure exhaust-valve 3 is provided with the fine motion valve element that different displacements are produced according to different driving pressure, when the displacement arrives
It is corresponding to be turned on and off valve during up to switching threshold.
In the technical scheme that the present embodiment provides, the valve element in pressure exhaust-valve is fine motion valve element, when the temperature in sleeve pipe
Not up to dangerous values when, that is to say, that when the displacement of corresponding valve element is not up to threshold value, valve element can be only carried out in certain limit
Fine motion, the on off state without changing valve, this fine motion can effectively ensure what valve spool of valve docked with around it
Regular carry out activity between inwall, without influenceing working condition, this activity can prevent the accumulation and corrosion of incrustation scale
Accumulation, make and keep cleaning to move in other words smooth around valve element, valve element can be made not get stuck when needed, build-up of pressure row
Empty valve can not be opened when needing and opening discharge opeing, be effectively guaranteed the reliability of device.
It is preferable on the basis of above-described embodiment for further optimization above-mentioned technical proposal, in above-mentioned double-tube heat exchanger,
The periphery of described sleeve pipe 1 and temperature-sensitive bag 2 is enclosed with heat-insulation layer.
In the technical scheme that the present embodiment provides, heat-insulation layer is respectively provided with the periphery of the periphery of sleeve pipe and temperature-sensitive bag, is passed through
The two is bundled together by heat-insulation layer, the heat transfer process for making therebetween try one's best it is few disturbed by the external world, ensure that logical
The accuracy of excess temperature change driving emptying rate of liquid work.
It is preferable on the basis of above-described embodiment for further optimization above-mentioned technical proposal, in above-mentioned double-tube heat exchanger,
The refrigerant outlet pipe 6 of described sleeve pipe 1 is adjacent with the position of feed tube 4, refrigerant inlet pipe 7 and the heat exchange liquid pipeline of described sleeve pipe 1
The position of drain pipe 8 is adjacent.In the technical scheme that the present embodiment provides, by the inlet and outlet of refrigerant pipeline and the disengaging of heat exchange liquid pipeline
Mouth is oppositely arranged, makes heat exchanging liquid and refrigerant reverse flow, ensure that the abundant progress of heat exchange.
It is preferable on the basis of above-described embodiment for further optimization above-mentioned technical proposal, in above-mentioned double-tube heat exchanger,
The outer wall of described sleeve pipe 1 is mounted with the bearing 11 that described sleeve pipe 1 is propped up to certain distance.Branch is provided with the present embodiment
Seat, a certain distance is propped up by bearing by sleeve pipe, makes it not contact any case side wall structure, ensures as far as possible few progress
Non-essential heat conduction, has saved the energy.
Based on the double-tube heat exchanger provided in above-described embodiment, the utility model additionally provides a kind of air-conditioning, the air-conditioning bag
Include any one double-tube heat exchanger in above-described embodiment.The double-tube heat exchanger in above-described embodiment, institute are employed due to the air-conditioning
Above-described embodiment refer to the beneficial effect of the air-conditioning.
Each embodiment is described by the way of progressive in this specification, what each embodiment stressed be and other
The difference of embodiment, between each embodiment identical similar portion mutually referring to.
The foregoing description of the disclosed embodiments, professional and technical personnel in the field are enable to realize or new using this practicality
Type.A variety of modifications to these embodiments will be apparent for those skilled in the art, determine herein
The General Principle of justice can be realized in other embodiments in the case where not departing from spirit or scope of the present utility model.Cause
This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The most wide scope consistent with features of novelty.
Claims (10)
1. a kind of double-tube heat exchanger, including hollow sleeve pipe, the interior heat exchange liquid pipeline and refrigerant for including mutual heat conduction of described sleeve pipe
Pipeline, it is characterised in that be close to described sleeve pipe side wall and be provided with temperature-sensitive bag, thermal expansion medium is accommodated in the temperature-sensitive bag；Institute
The low spot for stating heat exchange liquid pipeline is provided with and communicated with pressure exhaust-valve, and the temperature-sensitive bag passes through connecting tube and the pressure exhaust-valve
Control terminal is connected, by the expansion or shrinkage of thermal expansion medium, the closing of the corresponding driving pressure exhaust-valve or opening.
2. double-tube heat exchanger according to claim 1, it is characterised in that described sleeve pipe is set in multi-turn rolled side by side
Put, the inner circumferential setting that described sleeve pipe winds the encirclement structure to be formed is close in the periphery of the temperature-sensitive bag.
3. double-tube heat exchanger according to claim 2, it is characterised in that the feed tube of the heat exchange liquid pipeline is arranged at it
Pipeline low spot, the pressure exhaust-valve are arranged on the feed tube.
4. double-tube heat exchanger according to claim 3, it is characterised in that the high point of the heat exchange liquid pipeline is provided with ventilation
Valve, for balancing the air pressure in the heat exchange liquid pipeline.
5. double-tube heat exchanger according to claim 4, it is characterised in that the ventilation valve includes being arranged at the heat exchange
The check valve and air bleeding valve of liquid pipeline high point diverse location, the check valve are provided with the air pressure core assembly for being capable of air-breathing.
6. according to the double-tube heat exchanger described in any one of claim 3 to 5, it is characterised in that the pressure exhaust-valve is provided with
The fine motion valve element of different displacements is produced according to different driving pressure, it is corresponding to open when the displacement reaches switching threshold
Open or close valve.
7. double-tube heat exchanger according to claim 6, it is characterised in that the periphery of described sleeve pipe and temperature-sensitive bag is enclosed with
Heat-insulation layer.
8. double-tube heat exchanger according to claim 7, it is characterised in that the refrigerant outlet pipe of described sleeve pipe and the feed tube
Position is adjacent, and the refrigerant inlet pipe of described sleeve pipe is adjacent with the drain pipe position for the liquid pipeline that exchanges heat.
9. double-tube heat exchanger according to claim 8, it is characterised in that the outer wall of described sleeve pipe is mounted with will be described
Covering pipe distance, it installs stationary plane, props up the bearing of certain distance.
10. a kind of air-conditioning, it is characterised in that including the double-tube heat exchanger as described in claim any one of 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621354473.2U CN206739578U (en) | 2016-12-09 | 2016-12-09 | A kind of double-tube heat exchanger and air-conditioning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621354473.2U CN206739578U (en) | 2016-12-09 | 2016-12-09 | A kind of double-tube heat exchanger and air-conditioning |
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| Publication Number | Publication Date |
|---|---|
| CN206739578U true CN206739578U (en) | 2017-12-12 |
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ID=60554355
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621354473.2U Active CN206739578U (en) | 2016-12-09 | 2016-12-09 | A kind of double-tube heat exchanger and air-conditioning |
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| CN (1) | CN206739578U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106482323A (en) * | 2016-12-09 | 2017-03-08 | 广东高而美制冷设备有限公司 | A kind of double-tube heat exchanger and air-conditioning |
-
2016
- 2016-12-09 CN CN201621354473.2U patent/CN206739578U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106482323A (en) * | 2016-12-09 | 2017-03-08 | 广东高而美制冷设备有限公司 | A kind of double-tube heat exchanger and air-conditioning |
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