CN114216358A - High-pressure-bearing corrosion-resistant detachable plate heat exchanger - Google Patents
High-pressure-bearing corrosion-resistant detachable plate heat exchanger Download PDFInfo
- Publication number
- CN114216358A CN114216358A CN202111613651.4A CN202111613651A CN114216358A CN 114216358 A CN114216358 A CN 114216358A CN 202111613651 A CN202111613651 A CN 202111613651A CN 114216358 A CN114216358 A CN 114216358A
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- Prior art keywords
- plate
- heat exchanger
- clamping plate
- high pressure
- resistant
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- 238000005260 corrosion Methods 0.000 title claims abstract description 32
- 230000007797 corrosion Effects 0.000 title claims abstract description 30
- 230000007246 mechanism Effects 0.000 claims abstract description 32
- 239000000428 dust Substances 0.000 claims abstract description 5
- 230000002146 bilateral effect Effects 0.000 claims description 8
- 230000008878 coupling Effects 0.000 claims description 8
- 238000010168 coupling process Methods 0.000 claims description 8
- 238000005859 coupling reaction Methods 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 239000012530 fluid Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 206010028980 Neoplasm Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D9/04—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being formed by spirally-wound plates or laminae
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
- F28F19/02—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/001—Casings in the form of plate-like arrangements; Frames enclosing a heat exchange core
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators
- F28F9/262—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators for radiators
- F28F9/264—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators for radiators by sleeves, nipples
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a high-pressure-bearing corrosion-resistant detachable plate heat exchanger in the technical field of heat exchangers, which comprises a bottom plate, wherein a left clamping plate and a right clamping plate are symmetrically fixed at the upper end of the bottom plate, a guide rod is connected between the left clamping plate and the right clamping plate, a rectangular protection plate is symmetrically connected between the left clamping plate and the right clamping plate from front to back, a dust screen is embedded in the rectangular protection plate, the upper ends of the left clamping plate and the right clamping plate are clamped and provided with a cover frame, a plurality of connecting mechanisms are symmetrically arranged above the guide rod from left to right, a plugging mechanism is connected between every two adjacent connecting mechanisms, and a plurality of heat exchange sheet mechanisms are arranged between the left clamping plate and the right clamping plate; according to the invention, the cover frame is disassembled by unscrewing the bolts, the round blocks are pulled upwards by pulling the pull rings on the corresponding round blocks, and the corresponding heat exchange plates are manually moved, so that the heat exchange plates to be cleaned can be taken out, the single heat exchange plates are respectively taken out, and the convenience of cleaning and maintenance is improved.
Description
Technical Field
The invention relates to the technical field of heat exchangers, in particular to a high-pressure-bearing corrosion-resistant detachable plate heat exchanger.
Background
The plate heat exchanger is a high-efficiency heat exchanger formed by stacking a series of metal sheets with certain corrugated shapes. Thin rectangular channels are formed between the various plates through which heat is exchanged. The plate heat exchanger is an ideal device for heat exchange of liquid-liquid and liquid-vapor. The heat exchanger has the characteristics of high heat exchange efficiency, small heat loss, compact and light structure, small occupied area, wide application, long service life and the like. The plate type heat exchanger mainly comprises two types of frames (detachable type) and brazing type, and the plate type mainly comprises a herringbone corrugated plate, a horizontal straight corrugated plate and a tumor-shaped plate. The detachable plate heat exchanger is formed by punching a plurality of corrugated thin plates at certain intervals, sealing the peripheries of the corrugated thin plates by gaskets, overlapping and pressing by using a frame and pressing screws, forming fluid distribution pipes and fluid collection pipes by four corner holes of the plates and the gaskets, and reasonably separating cold and hot fluids to enable the cold and hot fluids to respectively flow in flow channels on two sides of each plate so as to carry out heat exchange by the plates.
Plate heat exchanger generally all can regularly carry out the scrubbing scale removal, and traditional plate heat exchanger structure is fixed, is not convenient for dismantle cleanly, and can not part and dismantle cleanly to single heat transfer board.
Therefore, it is necessary to design a high pressure-bearing corrosion-resistant detachable plate heat exchanger.
Disclosure of Invention
The invention aims to provide a high-pressure-bearing corrosion-resistant detachable plate heat exchanger to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a high pressure-bearing corrosion-resistant removable plate heat exchanger, includes the bottom plate, the upper end symmetry of bottom plate is fixed with left pinch-off blades and right pinch-off blades, be connected with the guide arm between left pinch-off blades and the right pinch-off blades, symmetrical connection has the rectangle guard plate around between left pinch-off blades and the right pinch-off blades, the embedding is provided with the dust screen on the rectangle guard plate, the upper end joint of left pinch-off blades and right pinch-off blades is provided with the lid frame, the top bilateral symmetry of guide arm is provided with a plurality of coupling mechanisms, and is adjacent be connected with shutoff mechanism between the coupling mechanism, be provided with a plurality of heat exchanger fin mechanisms between left pinch-off blades and the right pinch-off blades.
Further, among the above-mentioned corrosion-resistant removable plate heat exchanger of high pressure-bearing, heat exchanger fin mechanism includes heat transfer board, cooperation groove and inside lining hole, cooperation groove has been seted up to heat transfer board bilateral symmetry from top to bottom, the inside lining hole has all been seted up all around on the heat transfer board, the edge in inside lining hole all is provided with sealed cushion.
Furthermore, among the above-mentioned high pressure-bearing corrosion-resistant removable plate heat exchanger, coupling mechanism includes guide block, spacing ring, jack and connecting rod, a plurality of jacks have been seted up to bilateral symmetry on the guide block, the fixed cover in the outside of guide block is equipped with the spacing ring, be fixed with the connecting rod on the spacing ring, connecting rod and rear side rectangle guard plate fixed connection.
Furthermore, in the above-mentioned corrosion-resistant removable plate heat exchanger of high pressure-bearing, shutoff mechanism includes circle piece, dog, pull ring, recess, inserted block and spring, the outer end of circle piece is fixed with the pull ring, the outer end of circle piece is fixed with the dog, a plurality of recesses have been seted up to the symmetry on the circle piece, the recess in-connection has the spring, the outer end of spring is connected with the inserted block.
Furthermore, in the detachable plate heat exchanger with high pressure bearing and corrosion resistance, the outer side of the heat exchange plate is coated with the corrosion-resistant layer.
Furthermore, in the high-pressure-bearing corrosion-resistant detachable plate heat exchanger, the cover frame is connected with the left clamping plate and the right clamping plate through a plurality of bolts.
Furthermore, in the high-pressure-bearing corrosion-resistant detachable plate heat exchanger, the outer end of the insert block is arc-shaped.
Furthermore, in the high-pressure-bearing corrosion-resistant detachable plate heat exchanger, the matching groove at the lower side is matched with the guide rod, and the matching groove at the upper side is matched with the guide block.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the cover frame, the rectangular protection plate and the dustproof net are used as protection mechanisms, so that the use protection performance is improved.
2. According to the invention, the cover frame is disassembled by unscrewing the bolts, the round blocks are pulled upwards by pulling the pull rings on the corresponding round blocks, and the corresponding heat exchange plates are manually moved, so that the heat exchange plates to be cleaned can be taken out, the single heat exchange plates are respectively taken out, and the convenience of cleaning and maintenance is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the plugging mechanism of the present invention;
FIG. 3 is a schematic structural view of a heat exchanger plate mechanism according to the present invention;
FIG. 4 is a schematic view of the connecting mechanism of the present invention;
FIG. 5 is a schematic diagram of the distribution of the insert blocks of the present invention;
in the drawings, the components represented by the respective reference numerals are listed below:
1-bottom plate, 2-left clamping plate, 3-right clamping plate, 4-rectangular protective plate, 5-dust screen, 6-heat exchange sheet mechanism, 61-heat exchange plate, 62-matching groove, 63-lining hole, 7-guide rod, 9-connecting mechanism, 91-guide block, 92-limiting ring, 93-jack, 94-connecting rod, 10-cover frame, 12-blocking mechanism, 121-round block, 122-stop block, 123-pull ring, 124-groove, 125-insert block and 126-spring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
The invention provides a technical scheme that: the utility model provides a high pressure-bearing corrosion-resistant removable plate heat exchanger, comprising a base plate 1, the upper end symmetry of bottom plate 1 is fixed with left pinch-off blades 2 and right pinch-off blades 3, be connected with guide arm 7 between left pinch-off blades 2 and the right pinch-off blades 3, front and back symmetric connection has rectangle guard plate 4 between left pinch-off blades 2 and the right pinch-off blades 3, rectangle guard plate 4 adopts steel to support, the embedding is provided with dust screen 5 on the rectangle guard plate 4, the upper end joint of left pinch-off blades 2 and right pinch-off blades 3 is provided with apron frame 10, apron frame 10 adopts steel to support, apron frame 10 passes through a plurality of bolts and left pinch-off blades 2, right pinch-off blades 3 is connected, the top bilateral symmetry of guide arm 7 is provided with a plurality of coupling mechanism 9, be connected with shutoff mechanism 12 between the adjacent coupling mechanism 9, be provided with a plurality of heat exchanger fin mechanisms 6 between left pinch-off blades 2 and the right pinch-off blades 3.
Example two
Based on the first removable plate heat exchanger of high pressure-bearing corrosion-resistant that provides of the embodiment of this application, the second embodiment of this application provides another kind of removable plate heat exchanger of high pressure-bearing corrosion-resistant. The second embodiment is only a further mode of the first embodiment, and the implementation of the second embodiment does not affect the implementation of the first embodiment alone.
The second embodiment of the present invention will be further described with reference to the drawings and the following embodiments.
Compare with the first embodiment, provide a concrete heat exchanger plate mechanism 6 in this embodiment and include heat transfer board 61, cooperation groove 62 and inside lining hole 63, the cooperation groove 62 has been seted up to the bilateral symmetry about heat transfer board 61, inside lining hole 63 has all been seted up all around on the heat transfer board 61, the edge of inside lining hole 63 all is provided with sealed cushion, the outside coating of heat transfer board 61 has the anti-corrosion coating, the middle part of heat transfer board 61 is provided with the ripple architecture.
EXAMPLE III
Based on the first removable plate heat exchanger of high pressure-bearing corrosion-resistant that provides of the embodiment of this application, the third embodiment of this application provides another kind of removable plate heat exchanger of high pressure-bearing corrosion-resistant. The third embodiment is only a further mode of the first embodiment, and the implementation of the third embodiment does not affect the single implementation of the first embodiment.
The third embodiment of the present invention is further described below with reference to the drawings and the following embodiments.
Compared with the first embodiment, the first embodiment provides a specific connecting mechanism 9 including guide block 91, spacing ring 92, jack 93 and connecting rod 94, and bilateral symmetry has seted up a plurality of jacks 93 on the guide block 91, and the fixed cover in outside of guide block 91 is equipped with spacing ring 92, is fixed with connecting rod 94 on the spacing ring 92, connecting rod 94 and rear side rectangle guard plate 4 fixed connection. The lower engaging groove 62 engages with the guide bar 7, and the upper engaging groove 62 engages with the guide block 91.
Example four
Based on the first removable plate heat exchanger of high pressure-bearing corrosion-resistant that provides of the embodiment of this application, the fourth embodiment of this application provides another kind of high pressure-bearing corrosion-resistant removable plate heat exchanger. The fourth embodiment is only a further mode of the first embodiment, and the implementation of the fourth embodiment does not affect the single implementation of the first embodiment.
The fourth embodiment of the present invention is further described with reference to the drawings and the following embodiments.
Compared with the first embodiment, the specific plugging mechanism 12 provided in this embodiment includes a circular block 121, a stop block 122, a pull ring 123, a groove 124, an insert block 125 and a spring 126, the pull ring 123 is fixed to the outer end of the circular block 121, the stop block 122 is fixed to the outer end of the circular block 121, the circular block 121 is symmetrically provided with a plurality of grooves 124, the spring 126 is connected in the groove 124, the insert block 125 is connected to the outer end of the spring 126, and the outer end of the insert block 125 is set to be arc-shaped.
The working principle is as follows: when the dustproof cover is used, protection is achieved through the cover frame 10, the rectangular protection plate 4 and the dustproof net 5. When the cover frame 10 needs to be disassembled for cleaning, the bolts are unscrewed to disassemble the cover frame 10, the pull rings 123 on the corresponding round blocks 121 are pulled, the round blocks 121 are pulled upwards, the corresponding heat exchange plates 61 are manually moved (moved rightwards), and the heat exchange plates 61 needing to be cleaned can be taken out. Can take out single heat transfer board respectively promptly, improve the convenience of cleanness and maintenance.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (8)
1. The utility model provides a removable plate heat exchanger of high pressure-bearing corrosion-resistant, includes bottom plate (1), its characterized in that: the upper end symmetry of bottom plate (1) is fixed with left clamp plate (2) and right clamp plate (3), be connected with guide arm (7) between left side clamp plate (2) and right clamp plate (3), symmetrical connection has rectangle guard plate (4) around between left side clamp plate (2) and right clamp plate (3), the embedding is provided with dust screen (5) on rectangle guard plate (4), the upper end joint of left side clamp plate (2) and right clamp plate (3) is provided with lid frame (10), the top bilateral symmetry of guide arm (7) is provided with a plurality of coupling mechanism (9), and is adjacent be connected with shutoff mechanism (12) between coupling mechanism (9), be provided with a plurality of heat exchanger fin mechanisms (6) between left side clamp plate (2) and right clamp plate (3).
2. The high pressure-bearing corrosion-resistant detachable plate heat exchanger according to claim 1, characterized in that: the heat exchange plate mechanism (6) comprises a heat exchange plate (61), a matching groove (62) and lining holes (63), the matching groove (62) is symmetrically formed in the upper side and the lower side of the heat exchange plate (61), the lining holes (63) are formed in the periphery of the heat exchange plate (61), and sealing rubber gaskets are arranged at the edges of the lining holes (63).
3. The high pressure-bearing corrosion-resistant detachable plate heat exchanger according to claim 2, characterized in that: coupling mechanism (9) are including guide block (91), spacing ring (92), jack (93) and connecting rod (94), a plurality of jacks (93) have been seted up to bilateral symmetry on guide block (91), the fixed cover in the outside of guide block (91) is equipped with spacing ring (92), be fixed with connecting rod (94) on spacing ring (92), connecting rod (94) and rear side rectangle guard plate (4) fixed connection.
4. The high pressure-bearing corrosion-resistant detachable plate heat exchanger according to claim 1, characterized in that: the plugging mechanism (12) comprises a round block (121), a stop block (122), a pull ring (123), a groove (124), an insert block (125) and a spring (126), wherein the pull ring (123) is fixed to the outer end of the round block (121), the stop block (122) is fixed to the outer end of the round block (121), a plurality of grooves (124) are symmetrically formed in the round block (121), the spring (126) is connected in the groove (124), and the outer end of the spring (126) is connected with the insert block (125).
5. The high pressure-bearing corrosion-resistant detachable plate heat exchanger according to claim 2, characterized in that: the outer side of the heat exchange plate (61) is coated with an anti-corrosion layer.
6. The high pressure-bearing corrosion-resistant detachable plate heat exchanger according to claim 1, characterized in that: the cover frame (10) is connected with the left clamping plate (2) and the right clamping plate (3) through a plurality of bolts.
7. The high pressure-bearing corrosion-resistant detachable plate heat exchanger according to claim 4, characterized in that: the outer end of the insert block (125) is arc-shaped.
8. A high pressure-bearing corrosion-resistant removable plate heat exchanger according to claim 3, characterized in that: the matching groove (62) on the lower side is matched with the guide rod (7), and the matching groove (62) on the upper side is matched with the guide block (91).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111613651.4A CN114216358A (en) | 2021-12-27 | 2021-12-27 | High-pressure-bearing corrosion-resistant detachable plate heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111613651.4A CN114216358A (en) | 2021-12-27 | 2021-12-27 | High-pressure-bearing corrosion-resistant detachable plate heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114216358A true CN114216358A (en) | 2022-03-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111613651.4A Pending CN114216358A (en) | 2021-12-27 | 2021-12-27 | High-pressure-bearing corrosion-resistant detachable plate heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114216358A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115388685A (en) * | 2022-10-26 | 2022-11-25 | 江苏金凯锐科技发展有限公司 | Condensing cold-heat exchanger |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20180075800A (en) * | 2016-12-27 | 2018-07-05 | 대원열판(주) | Plate type heat exchanger preventing corrosion by seawater cooling water |
| CN210220787U (en) * | 2019-07-26 | 2020-03-31 | 刘家帆 | Plate heat exchanger convenient to installation |
| CN212227817U (en) * | 2020-05-15 | 2020-12-25 | 南京普兰特换热设备有限公司 | Detachable plate heat exchanger |
| CN212567036U (en) * | 2020-05-11 | 2021-02-19 | 南京工大釜鼎能源技术有限公司 | Special plate heat exchanger of petrochemical convenient to equipment |
| CN213841854U (en) * | 2020-12-14 | 2021-07-30 | 洪湖市兴达石化设备制造有限公司 | Plate type heat exchanger |
| CN113739604A (en) * | 2021-09-03 | 2021-12-03 | 江苏八通换热设备有限公司 | High-efficient removable wide passageway plate heat exchanger |
-
2021
- 2021-12-27 CN CN202111613651.4A patent/CN114216358A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20180075800A (en) * | 2016-12-27 | 2018-07-05 | 대원열판(주) | Plate type heat exchanger preventing corrosion by seawater cooling water |
| CN210220787U (en) * | 2019-07-26 | 2020-03-31 | 刘家帆 | Plate heat exchanger convenient to installation |
| CN212567036U (en) * | 2020-05-11 | 2021-02-19 | 南京工大釜鼎能源技术有限公司 | Special plate heat exchanger of petrochemical convenient to equipment |
| CN212227817U (en) * | 2020-05-15 | 2020-12-25 | 南京普兰特换热设备有限公司 | Detachable plate heat exchanger |
| CN213841854U (en) * | 2020-12-14 | 2021-07-30 | 洪湖市兴达石化设备制造有限公司 | Plate type heat exchanger |
| CN113739604A (en) * | 2021-09-03 | 2021-12-03 | 江苏八通换热设备有限公司 | High-efficient removable wide passageway plate heat exchanger |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115388685A (en) * | 2022-10-26 | 2022-11-25 | 江苏金凯锐科技发展有限公司 | Condensing cold-heat exchanger |
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Application publication date: 20220322 |
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