CN2606325Y - Plate fluid heat exchanger - Google Patents
Plate fluid heat exchanger Download PDFInfo
- Publication number
- CN2606325Y CN2606325Y CN 03201600 CN03201600U CN2606325Y CN 2606325 Y CN2606325 Y CN 2606325Y CN 03201600 CN03201600 CN 03201600 CN 03201600 U CN03201600 U CN 03201600U CN 2606325 Y CN2606325 Y CN 2606325Y
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- heat exchanger
- water
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- cylindrical shell
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Abstract
A plate fluid heat exchanger for heat exchange comprises a sleeve, a plurality of heat exchange devices arranged inside the sleeve, an input pipe and an output pipe both communicated with the heat exchange devices and a plurality of connecting pipes connected with the heat exchange devices, wherein, the sleeve is provided with a drum body and a chamber arranged inside the drum body; each heat exchange device is provided with a body having two heat conducting sheets capable of defining a channel formed inside the body; the space between the bodies is bigger than that of the two heat conducting sheets of each of the bodies; a first flow path is defined through the bodies and the drum body; each connecting pipe is provided with a connecting pipe body and a connecting pipeline formed inside the connecting pipe body and communicated with the channels; a second flow path is formed through the connecting pipelines and the channels.
Description
Technical field
The utility model relates to a kind of heat-exchangers of the plate type, particularly relates to a kind of board-like fluid heat exchanger that supplies high temperature fluid and cryogen to carry out heat exchange.
Background technology
It is that the hot boiling water that will boil uses a heat exchanger to reduce its temperature and make warm boiling water with the cold unboiled water of lower temperature that general water dispenser provides the mode of warm boiling water.
As shown in Figure 1, generally be installed in the heat exchanger 9 in the water dispenser, normally by a hollow sleeve 91, a plurality of being arranged at the conducting strip 92 in this hollow sleeve 91, and a plurality of hollow tube 93 that is arranged at 92 of these a plurality of conducting strips is formed with equidistantly being arranged in parallel.These a plurality of conducting strips 92 are separated into the parallel fluid layer 920 that a plurality of water supply streams pass through with the space in this hollow sleeve 91, and, these a plurality of parallel fluid layers 920 are communicated with into the hot water stream that is not interconnected with this cold water stream of cold water stream and independently by respectively this runs through the hollow tube 93 of adjacent two conducting strips 92 in these a plurality of conducting strips 92 respectively.
General water dispenser also comprises a unboiled water groove that is connected with this cold water stream 81, a groove to boil water 82 that is connected with this unboiled water groove 81 usually, and a heating component 83 that is arranged in this groove 82 to boil water.9 of this heat exchangers have more one and are arranged on this hollow sleeve 91 and extend to and make its unboiled water efferent duct 94 that is connected with this cold water stream in this unboiled water groove 81, and one is connected with this cold water stream and extends to this hollow sleeve 91 unboiled water input pipe 95 outward equally.Wherein, after the unboiled water that enters this water dispenser enters in this hollow sleeve 91 by this unboiled water input pipe 95, flow to this unboiled water groove 81 in by this unboiled water efferent duct 94 again through this cold water stream and to store, with additional entering in this groove 82 to boil water in good time.When unboiled water flows in this groove 82 to boil water by this unboiled water groove 82, be to proper temperature by the unboiled water in this this groove 82 to boil water of heating component 83 heating.Above-mentioned water dispenser has more the standpipe 85 of hot water storgae 84, this groove 82 to boil water of a connection and this hot water storgae 84 of a store heat boiling water, and a heat insulation module 86 that is arranged in this hot water storgae 84.Because connecting pipe principle, the hot water in this groove 82 to boil water can carry out the control of the water yield by water-head, is delivered in this hot water storgae 84 via this standpipe 85 to store again.And this heat insulation module 86 is to be used to keep this boiling water that is stored in hot water storgae 84 in a stable temperature, to reach heat insulation effect.
And this heat exchanger 9 has more one and extends in this hollow sleeve 91 and the boiling water input pipe 96 that is connected with this hot water stream by this hot water storgae 84, and one is connected with this hot water stream and extends to this hollow sleeve 91 boiling water efferent duct 97 outward equally.Because in this heat exchanger 9, unboiled water and boiling water are to flow in respectively at this hot water stream and this cold water stream across these a plurality of conducting strips 92, owing to be higher than the temperature of cold unboiled water from the hot boiling water temperature of these hot water storgae 84 outflows, therefore just can make the part heat of hot boiling water be passed to cold unboiled water by these a plurality of conducting strips 92, and make that the boiling water temperature that is flowed out by this boiling water efferent duct 97 is low than the boiling water of this boiling water input pipe 96, the unboiled water height that the unboiled water temperature that is flowed out by this unboiled water efferent duct 94 flows into than this unboiled water input pipe 95, and reach the boiling water cooling simultaneously and the heat exchange effect of unboiled water intensification.
In order to promote the heat exchange effect of unboiled water and boiling water, these a plurality of conducting strips 92 can be furthered during making, the spacing of these a plurality of conducting strips 92 is dwindled, so as to increasing the contact area of boiling water or unboiled water per unit volume and these a plurality of conducting strips 92, generally the spacing of these a plurality of conducting strips 92 is about below 2.5 millimeters.But this measure can make that but the capillarity of this parallel fluid layer 920 is quite remarkable, and causes the viscosity of current to increase.Because this hot water storgae 84 is also little with the difference in height of this heat exchanger 9, can't provide enough pressure to increase flow velocity and the flow that boiling water flows in this hot water stream, so it is too big to be subject to the current viscosity, usually must set up a pressue device 87, when boiling water flows in this heat exchanger 9 by this hot water storgae 84, this pressue device 87 can apply suitable pressure to the boiling water that is positioned at this hot water stream, and is too small and can't satisfy general use with the warm boiling water flow of avoiding being flowed out by this boiling water efferent duct 97.
On the other hand, if spacing that will these a plurality of conducting strips 92 is amplified with same ratio, then will be because of this unboiled water and boiling water unit volume and the minimizing of this conducting strip 92 contacts area, make heat exchange effect significantly reduce, not only the boiling water that is flowed out by this boiling water efferent duct 97 will still have outside the quite high temperature, the unboiled water of this cold water stream of flowing through also can't absorb enough heats, causes this heating component 83 must provide more heat unboiled water can be boiled, and causes cost to raise and energy waste.
More because in the process of making, the parallel fluid layer 920 that these a plurality of conducting strips are 92 is to define out jointly with these 92 of a plurality of conducting strips by this hollow sleeve 91, and two adjacent flat shape fluid layers 920 are not communicated with each other, therefore must consider the watertightness of 91 of these a plurality of conducting strips 92 and this hollow sleeves on making; And because the high cryogenic liquid of heat exchange that this heat exchanger 9 carries out is respectively boiling water and unboiled water, under the requirement of sanitary condition, watertightness has higher requirement, therefore make to become the assembling operation of this heat exchanger 9 to have suitable degree of difficulty and complexity with these hollow sleeve 91 driving fits these a plurality of conducting strips 92, and the check of the watertightness after completing is difficult for carrying out similarly.
The utility model content
The purpose of this utility model is to provide a kind of board-like fluid heat exchanger that does not need extra pressurization and flow abundance.
Another purpose of the present utility model is to provide a kind of making the simple and easy board-like fluid heat exchanger of check.
A purpose more of the present utility model is that a kind of space abundance and good board-like fluid heat exchanger of heat exchanger effectiveness laid in is being provided.
Another purpose of the present utility model is that a kind of water dispenser with board-like fluid heat exchanger is being provided.
Board-like fluid heat exchanger of the present utility model comprises that one has a cylindrical shell, and is formed at room, an inlet that is connected with this room in this cylindrical shell and the sleeve of an outlet that is connected with this room.It is characterized in that this board-like fluid heat exchanger also comprises a plurality of heat-exchange devices that comprise a free-ended body that does not contact with this cylindrical shell that have respectively, one have one by these a plurality of bodies wherein one extend to the input pipe that the outer input body and of this sleeve is formed at the input channel in this input body, one have one by these a plurality of bodies wherein another extends to the efferent duct that the outer output body and of this sleeve is formed at the output channel in this output body, and a plurality of have respectively one by these a plurality of bodies wherein one extend to wherein another connection body, and one is formed in this connection body and the tube connector of the connecting pipe that is connected with this two intrinsic channel.Respectively this body has two mutually parallelly and can define a conducting strip that is formed at this intrinsic channel, and these a plurality of bodies are located in this room each other abreast, and the spacing of these a plurality of bodies is greater than this two conducting strips spacing of this body respectively; Can define first stream that is connected with this inlet and this outlet by these a plurality of bodies and this cylindrical shell; And can form second stream that is connected with this input channel and this output channel by these a plurality of connecting pipes and this a plurality of channels.
Description of drawings
Below by most preferred embodiment and accompanying drawing board-like fluid heat exchanger of the present utility model is elaborated, in the accompanying drawing:
Fig. 1 is a side schematic view that generally has the water dispenser of heat exchanger;
Fig. 2 is the side schematic view of a preferred embodiment of the utility model heat-exchangers of the plate type, and the water dispenser structure with this heat-exchangers of the plate type is described;
Fig. 3 is the profile along the 3-3 hatching among Fig. 2, and the annexation of a sleeve and a plurality of heat-exchange devices is described; And
Fig. 4 is a part of three-dimensional exploded view of the preferred embodiment, and the marriage relation of these a plurality of heat-exchange devices is described.
The specific embodiment
As shown in Figure 2, a preferred embodiment of the board-like fluid heat exchanger 1 of the utility model is to use on a water dispenser, carries out heat exchange for the high temperature fluid as hot boiling water with the cryogen as cold unboiled water.This water dispenser comprises this a board-like fluid heat exchanger 1 and a water boiler 2 that is connected with this board-like fluid heat exchanger 1.This water boiler 2 comprises hot water storgae 21, a heater 22 that is communicated with this hot water storgae 21 of a store heat boiling water, and a unboiled water groove 23 that is connected with this heater 22.This heater 22 has a groove 221 to boil water and a heating component 222, and is equiped with a heat insulation module 24 in this hot water storgae 21.This heating component 222 all is to form with electrically-heated coil with this heat insulation module 24 in the present embodiment.And this board-like fluid heat exchanger 1 comprises a sleeve 3 that is connected with this hot water storgae 21, a plurality ofly is arranged at heat-exchange device 4 in this sleeve 3, one of them extends to the outer input pipe of this sleeve 35, wherein another extends to the efferent duct 6 that this sleeve 3 is outer and be connected with this unboiled water groove 23 by these a plurality of heat-exchange devices 4 by this a plurality of heat-exchange device 4, and the tube connector 7 of adjacent two heat-exchange devices 4 in these a plurality of heat-exchange devices 4 of a plurality of connection.
As shown in Figures 2 and 3, this sleeve 3 have one comprise two opposite ends 311,311 ' cylindrical shell 31, is formed at the room 30 in this cylindrical shell 31, and one be formed at this a plurality of end 311,311 ' wherein an end 311 and the inlet 301 that is connected with this room 30.This water boiler 2 has more one and extends to the hot-water line 25 that this inlet 301 is connected with this room 30 by this hot water storgae 21.This sleeve 3 has more one and is connected with this room 30 equally but is formed at these a plurality of ends 311,311 ' the wherein outlet 302 of the other end 311 ', and one is close to this inlet 301 and runs through the passage 303 of this cylindrical shell 31.This passage 303 is to be used for the pressure in this cylindrical shell of balance 31 or to let out and remove the gas that resides in this room 30, therefore can be higher than the water pipe (figure does not show) of water level in this hot water storgae 21 in an extended height usually or is connected just like the pressure relief device (scheming not show) of valve switch etc.Because the non-the utility model major technique of these pressure release modes means, and can guess easily, so do not add to give unnecessary details at this for haveing the knack of this skill personage.
To shown in Figure 4, respectively this heat-exchange device 4 has a rectangular tabular as Fig. 2, and is the body 41 that vertically is located in this room 30 with this a plurality of ends 311,311 ' online direction.Respectively this body 41 has one and does not extend to the side 413 that this free end 411 also contacts this cylindrical shell 31 respectively with the free end 411 of this cylindrical shell 31 contacts, opposite and that contact with this cylindrical shell 31 contact jaw with this free end 411 412, two by this contact jaw 412, and two conducting strips 42 that are parallel to each other and extended to this free end 411 by this contact jaw 412.Respectively this conducting strip 42 is rectangular and be formed with the flow-disturbing line 421 of a plurality of slowing down fluid speed thereon, and this two edge that constitutes the conducting strip 42 of this body 41 connects airtight mutually and define a channel 410 that is formed in this body 41.
These a plurality of bodies 41 are located in this room 30 each other abreast, and the spacing of these a plurality of bodies 41 is three times of these a plurality of conducting strip 42 spacings of constituting this body 41 respectively.31 of this cylindrical shells have two relatively and for the contact jaw 412 interleaved ground of these a plurality of bodies 41 medial surface 312 of contact respectively, and defining one by these a plurality of bodies 41 and this cylindrical shell 31, to be the S shape tortuous and be connected for the first mobile stream of this high temperature fluid with this inlet 301 and this outlet 302.
This input pipe 5 is arranged in the end 311 ' that this is formed with this outlet 302, and has a body 41 that wherein is adjacent to this end 311 ' by these a plurality of bodies 41 and extend to these sleeve 3 outer input bodys 51 and and be formed at the interior input channel 50 of this input body 51.6 of this efferent ducts are arranged in this end that is formed with this inlet 301 311, and have one by these a plurality of bodies 41 wherein another body 41 that is adjacent to this end 311 extend to this sleeve 3 outer output bodys 61 and and be formed at the interior output channel 60 of this output body 61.
Respectively this tube connector 7 have one by these a plurality of bodies 41 wherein one extend to wherein another connection body 71, an and connecting pipe 70 that is formed in this connection body 71 and is connected with channel 410 in this two body 41.These a plurality of tube connectors 7 are connected to this a plurality of bodies 41 contiguous respectively these side 413 places alternately, and these a plurality of channels 410 are connected by these a plurality of connecting pipes 70, form one and be second stream that the S shape wriggles and is connected with this input channel 50 and this output channel 60 equally, for this cry-fluid flow.
Therefore, when the cryogen in the external world flows into via the input channel 50 of this input pipe 5, owing to just can follow the path of this second stream, enter the unboiled water groove 23 of this water boiler 2 respectively by the pass through channel 410 of 42 of these a plurality of conducting strips of the connecting pipe 70 of this tube connector 7, and from the output channel 60 of this efferent duct 6.At the same time, owing to will be full of high temperature fluid in this first stream, therefore by the conductive force of these a plurality of conducting strips 42, can make this cryogen absorb the heat of this high temperature fluid and intensification gradually, more because the channel 410 in these a plurality of bodies 41 is quite narrow flat thin, therefore can be extremely efficient with the transfer of heat of this high temperature fluid to this cryogen, make the cryogen temperature that enters this unboiled water groove 23 be higher than originally and enter cryogen temperature in this input channel 50 by the external world.In the present embodiment, this cryogen is the extraneous cold unboiled water that enters, because general water system has higher hydraulic pressure usually, although the channel 410 in therefore should a plurality of bodies 41 is comparatively narrow flat thin, this cryogen still can overcome capillarity and mobile in this second stream easily.
After the cryogenic liquid in this unboiled water groove 23 is heated to proper temperature via this heater 22, just forms high temperature fluid and be stored in this hot water storgae 21, and keep the temperature that this is stored in the high temperature fluid in the hot water storgae 21 by this heat insulation module 24.This is stored in the hot water storgae 21 and the high-temperature stream physical efficiency of keeping certain high temperature enters in the room 30 of this sleeve 3 via this hot-water line 25 that is connected with hot water storgae 21 and room 30, and the path flow of following this first stream is through these a plurality of bodies 41 peripheries, because the spacing of these a plurality of bodies 41 is bigger, therefore capillarity is not remarkable, add that this passage that runs through this cylindrical shell 31 303 can provide the approach as these room 30 internal and external pressure balances, make this high-temp liquid only in this first stream, to flow easily by the gravity effect, more because the channel 410 in these a plurality of bodies 41 has cryogen to pass through, therefore the heat of this high temperature fluid just can be released in this cryogen via the conduction of these a plurality of conducting strips 42, and then the reduction temperature, make that the temperature of high-temp liquid that is flowed out via this outlet 302 is lower.In the present embodiment, this high temperature fluid is hot boiling water, therefore carry out heat exchange via this board-like fluid heat exchanger 1 after, hot boiling water just forms potable temperature boiling water, and is flowed out by this outlet 302.
Conclude above-mentioned, consider that the cryogenic fluid pressure that enters this water dispenser is bigger, and the high temperature fluid pressure that is provided by this hot water storgae 21 is less, the board-like fluid heat exchanger 1 of the utility model keeps the small distance of 42 of these a plurality of conducting strips, and will these a plurality of bodies 41 distance strengthen, make this cryogen and this high-temperature stream physical efficiency flow in easily respectively in this second stream and this first stream simultaneously.Contact jaw 412 by these a plurality of bodies 41 contacts with the cylindrical shell 31 of this sleeve 3 with side 413 again, stop and force this high temperature fluid just can finish first stream that this is the S shape through the free end 411 of these a plurality of bodies 41, following in the situation of not using any pressue device fully, still can keep sufficient flow, and the mechanism that keeps this high temperature fluid and cryogen to carry out heat exchange.
Simultaneously, because for the cryogen of replenishing capacity enters this unboiled water groove 23 in good time, the flow velocity of the cryogen in this first stream will be very fast, and can take away this and be present in this second stream and certain heat of the high temperature fluid that flow velocity is slower, can be not big than the cryogen that this is present in first stream because of this volume that is present in the high temperature fluid in second stream, and influence the total amount of heat that it can exchange.More, make this water dispenser have bigger space, can store sufficient cooling fluid with the board-like fluid heat exchanger 1 of the utility model because second stream that this high temperature fluid exists has bigger accommodation space in this board-like fluid heat exchanger 1.
On the other hand, because in the process of making, these a plurality of bodies 41 are to be combined in twos by these a plurality of conducting strips 42 earlier, be connected to form this independently first stream with these a plurality of tube connectors 7 again, so when actual production, do not need to consider the watertightness of 41 of this cylindrical shell 31 and this a plurality of conducting strips 42 or this a plurality of bodies fully, and make manufacturing process simple relatively, and can promote and make yield.This first stream and this second stream watertightness independently particularly, just determine by these 42 of a plurality of conducting strips and these a plurality of bodies 41 obturation effect with 7 of this tube connectors, therefore when check, can check the respectively watertightness of this body 41 respectively, maybe should be a plurality of bodies 41 with should a plurality of tube connectors 7 assemblings finish after carry out watertightness and check, can guarantee the airtight quality of this first stream and this second stream, the method of inspection is with respect to heat-exchangers of the plate type was easy in the past, and more can guarantee to check quality, and reach the purpose of this utility model really.
Be noted that, outside board-like fluid heat exchanger 1 decapacitation of the utility model is used on the water dispenser, also can be with high and low temperature fluid mobile in this first stream and this second stream respectively with gases such as air and ammonias, or liquid such as oil, refrigerant and water are replaced, and be used in condenser system, cooling system, air-conditioning system, and heat recovery system etc.; The fluid temperature (F.T.) that does not limit this first stream circulation even must be higher than the fluid temperature (F.T.) of this second stream circulation, with its high and low temperature fluid flow location swap, heats or heating system, warm water or hot-water heating system and can be used in, and heating system etc.More because this first stream of the board-like fluid heat exchanger 1 of the utility model and the particular design of this second stream, therefore be fit to be used in relatively large and must be in the extreme on the higher heat-exchange system of impurities tolerance in the water as the amount of heat exchange water such as usefulness water heater, heated swimming pool, warm water fishpond and warm water cultivation pond of having a bath.
Claims (8)
1. a board-like fluid heat exchanger comprises that one has the sleeve that a cylindrical shell, is formed at room, an inlet that is connected with this room and an outlet that is connected with this room in this cylindrical shell; It is characterized in that: this board-like fluid heat exchanger also comprises a plurality of heat-exchange devices that comprise a free-ended body that does not contact with this cylindrical shell that have respectively, one have one by these a plurality of bodies wherein one extend to the input pipe that the outer input body and of this sleeve is formed at the input channel in this input body, one have one by these a plurality of bodies wherein another extends to the efferent duct that the outer output body and of this sleeve is formed at the output channel in this output body, and a plurality of have respectively one by these a plurality of bodies wherein one extend to wherein another connection body, and one is formed in this connection body and the tube connector of the connecting pipe that is connected with this two intrinsic channel; Respectively this body has two mutually parallelly and can define a conducting strip that is formed at this intrinsic channel, and these a plurality of bodies are located in this room each other abreast, and the spacing of these a plurality of bodies is greater than this two conducting strips spacing of this body respectively; Can define first stream that is connected with this inlet and this outlet by these a plurality of bodies and this cylindrical shell; And can form second stream that is connected with this input channel and this output channel by these a plurality of connecting pipes and this a plurality of channels.
2. board-like fluid heat exchanger as claimed in claim 1, it is characterized in that: respectively this body has more a contact jaw opposite with this free end, and this cylindrical shell has two medial surfaces that relatively also contact respectively for this a plurality of contact jaw interleaved ground, defines first stream of these complications so as to making these a plurality of bodies and this cylindrical shell.
3. board-like fluid heat exchanger as claimed in claim 1, it is characterized in that: this body has more two and is extended to this free end and contacted the side of this cylindrical shell respectively by this contact jaw, and these a plurality of tube connectors then are connected to contiguous respectively this side edge of these a plurality of bodies alternately to form second stream that this wriggles.
4. board-like fluid heat exchanger as claimed in claim 1 is characterized in that: the spacing of these a plurality of bodies is three times of this two conducting strips spacing of constituting this body respectively.
5. board-like fluid heat exchanger as claimed in claim 1, it is characterized in that: this cylindrical shell has two opposite and online directions and is vertical end with these a plurality of body parallel directions, this inlet be formed at these a plurality of ends wherein one, this outlet then be formed at these a plurality of ends wherein another.
6. board-like fluid heat exchanger as claimed in claim 5 is characterized in that: this efferent duct is arranged in this end that is formed with this inlet, and this input pipe then is arranged in this end that is formed with this outlet.
7. board-like fluid heat exchanger as claimed in claim 1 is characterized in that: this sleeve has more a passage that runs through this cylindrical shell.
8. board-like fluid heat exchanger as claimed in claim 1 is characterized in that: respectively this conducting strip is formed with a plurality of flow-disturbing lines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03201600 CN2606325Y (en) | 2003-03-11 | 2003-03-11 | Plate fluid heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03201600 CN2606325Y (en) | 2003-03-11 | 2003-03-11 | Plate fluid heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2606325Y true CN2606325Y (en) | 2004-03-10 |
Family
ID=34157604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03201600 Expired - Fee Related CN2606325Y (en) | 2003-03-11 | 2003-03-11 | Plate fluid heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2606325Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101728180A (en) * | 2008-10-31 | 2010-06-09 | 乐金电子(天津)电器有限公司 | Heat radiation structure of magnetron |
| CN110514034A (en) * | 2019-09-02 | 2019-11-29 | 王春霞 | A kind of polyvinyl chloride dehydration optimization equipment |
| CN113865376A (en) * | 2021-09-14 | 2021-12-31 | 田方 | Fractal microchannel heat exchanger |
-
2003
- 2003-03-11 CN CN 03201600 patent/CN2606325Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101728180A (en) * | 2008-10-31 | 2010-06-09 | 乐金电子(天津)电器有限公司 | Heat radiation structure of magnetron |
| CN110514034A (en) * | 2019-09-02 | 2019-11-29 | 王春霞 | A kind of polyvinyl chloride dehydration optimization equipment |
| CN113865376A (en) * | 2021-09-14 | 2021-12-31 | 田方 | Fractal microchannel heat exchanger |
| CN113865376B (en) * | 2021-09-14 | 2024-05-10 | 甘肃一德新能源设备有限公司 | Fractal micro-channel heat exchanger |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |