CN212457663U - Heat pump drying device - Google Patents
Heat pump drying device Download PDFInfo
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- CN212457663U CN212457663U CN202021045275.4U CN202021045275U CN212457663U CN 212457663 U CN212457663 U CN 212457663U CN 202021045275 U CN202021045275 U CN 202021045275U CN 212457663 U CN212457663 U CN 212457663U
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Abstract
The utility model discloses a heat pump drying device, which comprises a box body, two blocking pieces, two condensers and two first evaporators; the box body forms a cavity; the two blocking pieces are fixedly arranged in the box body and divide the cavity into a first cavity, a drying chamber and a second cavity in sequence; the two condensers are respectively fixedly arranged on the barrier piece, positioned at two sides of the drying chamber and communicated with the drying chamber; the two first evaporators are respectively and fixedly arranged in the first chamber and the second chamber; at least one air inlet and at least one air outlet are respectively arranged on the two blocking parts; each air inlet is respectively provided with a fan; the condenser and the first evaporator are opposite to the air inlet and are respectively and correspondingly arranged on the inner side and the outer side of the air inlet; each air outlet communicates first cavity and drying chamber, second cavity and drying chamber respectively. The utility model provides high material drying quality improves economic benefits.
Description
Technical Field
The utility model belongs to the technical field of the heat pump is dried, specifically speaking relates to a heat pump drying device.
Background
The drying of industrial products is an important link in the industrial production process, the drying of products is a high energy consumption process, and drying equipment utilizing the heat pump principle is appeared in order to reduce energy consumption and drying cost and improve drying quality.
The refrigerant is pressurized by a compressor to become high-temperature high-pressure gas which enters a condenser in the drying room; the refrigerant is condensed and liquefied to release high-temperature heat to heat the air in the drying room; the materials in the drying room are vaporized and evaporated in the form of hot air; the evaporated water vapor is discharged by the moisture discharging system to achieve the purpose of drying the materials.
The heat pump drying mode has the advantages of high efficiency, energy conservation, flexible control, environmental friendliness and the like. However, all the existing heat pump drying devices are integral waste heat utilization type heat pump drying devices. Air is blown to the to-be-dried articles from one side after being heated by the condenser, so that the flow field distribution of a drying area is uneven, the temperature distribution of the drying area is uneven, the product is heated unevenly, and the product drying effect is influenced.
Disclosure of Invention
The utility model provides a heat pump drying device, through the regional both sides configuration heat exchanger of drying, the structure of high hot air of two-way blowing in solves the regional flow field of drying and distributes unevenly, and temperature distribution is uneven, makes and treats that the stoving material is heated inhomogeneously, influences the problem of stoving effect.
In order to solve the technical problem, the utility model discloses a following technical scheme realizes:
a heat pump drying device comprises a box body, two blocking pieces, two condensers and two first evaporators;
the box body forms a cavity;
the two blocking pieces are fixedly arranged in the box body and divide the cavity into a first cavity, a second cavity and a drying chamber; the drying chamber is positioned between the first chamber and the second chamber;
the two condensers are respectively fixedly arranged on the barrier piece, positioned at two sides of the drying chamber and communicated with the drying chamber;
the two first evaporators are respectively and fixedly arranged in the first chamber and the second chamber; at least one air inlet and at least one air outlet are respectively arranged on the two blocking parts; a fan is respectively arranged at each air inlet; the condenser and the first evaporator are opposite to the air inlet and are respectively and correspondingly arranged on the inner side and the outer side of the air inlet;
each air outlet is respectively communicated with the first cavity and the drying chamber, and the second cavity and the drying chamber.
Further, the barrier comprises a first partition plate and a second partition plate; the two first partition plates are respectively positioned at the inner sides of the two second partition plates; the two condensers are respectively positioned between the first partition plate and the second partition plate of the two barriers;
the second clapboard is matched with the condenser in an installing way, and the edge of the second clapboard is connected with the first clapboard; the air inlet is formed in the second partition plate; the air outlet is formed in the first partition board on the periphery of the second partition board; and ventilation openings are formed in the positions, corresponding to the second partition plate, of the first partition plate, and are a plurality of uniformly arranged through holes.
Preferably, each of the through holes includes an extension side extending from the first partition to the drying chamber.
Preferably, the first partition plate has a flat plate-shaped structure;
the second partition board is of a flat structure, and the upper end and the lower end of the second partition board are respectively provided with an inward folded edge; the edge of the folded edge is connected with the first clapboard; the condenser is located between the first separator and the second separator.
In an embodiment, the air outlet is respectively arranged at the upper end and/or the lower end of the first partition plate.
In some embodiments, the refrigeration system further comprises two second evaporators and two refrigerant compression assemblies; the two second evaporators are arranged outside the box body and are respectively connected with the two first evaporators in parallel correspondingly; the two groups of first evaporators and the two groups of second evaporators respectively form two heat pump circulating systems with the refrigerant compression assemblies and the condensers.
In some embodiments, the drying device further includes two total heat exchangers, which are disposed outside the cabinet, and each total heat exchanger includes a fresh air channel and an exhaust air channel, and the fresh air channel and the exhaust air channel are respectively communicated with the first chamber, the second chamber and the outdoor space, and the drying chamber and the outdoor space, and are used for introducing fresh air into the first chamber and the second chamber and exhausting waste air in the drying chamber.
In some embodiments, the air conditioner further comprises two third evaporators which are respectively and correspondingly arranged at the tail ends of the two exhaust channels and respectively and correspondingly connected with the two first evaporators and the two second evaporators in parallel.
In some embodiments, the box is a square box comprising two first side plates, two second side plates, a top plate, and a top plate; each first side plate and the barrier piece tend to be arranged in parallel; each second side plate and the barrier piece tend to be vertically arranged; a material conveying port is arranged on each second side plate corresponding to the drying chamber; for transporting the material.
In some embodiments, the air conditioner further comprises a plurality of air outlet channels which are respectively arranged in the first chamber and the second chamber; one end of each air outlet channel is connected with each air outlet, and the other end of each air outlet channel is arranged on the outer side of the first evaporator in the first cavity and the second cavity.
Compared with the prior art, the utility model discloses an advantage is with positive effect: use the utility model discloses a heat pump drying device sets up the condenser respectively through the both sides at the drying chamber to the fan outside by the condenser makes the air current become high fever air through the condenser and gets into the drying chamber by the both sides of drying chamber, makes more even in the flow field in the drying chamber, and then makes the temperature distribution in the drying chamber more even, improves the quality of stoving material, improves economic benefits.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments are briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic view of an overall structure of an embodiment of a heat pump drying device provided in the present invention;
fig. 2 is an exploded view of an embodiment of the heat pump drying apparatus of fig. 1;
fig. 3 is a schematic structural diagram of a heat pump cycle system of the embodiment of the heat pump drying device in fig. 1;
FIG. 4 is a schematic diagram of the construction of one of the heat pump cycle systems of FIG. 3;
fig. 5 is a schematic view of an example of a barrier.
In the figure, the position of the upper end of the main shaft,
1. a box body; 2. a barrier; 3. a condenser; 4. a first evaporator; 5. a second evaporator; 6. a total heat exchanger; 7. a refrigerant compression assembly; 8. a third evaporator; 9. a fan; 11. a first side plate; 12. a second side plate; 13. a top plate; 21. a first separator; 22. a second separator; 61. a fresh air channel; 62. an air exhaust channel; 121. a material conveying port; 211. an air outlet; 212. a through hole; 221. an air inlet; 222. folding edges; 611. a fresh air inlet; 612. a fresh air supply outlet; 613. a fresh air duct; 621. an air exhaust inlet; 622. an air exhaust outlet; 623. an exhaust pipe.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
Referring to fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, the heat pump drying device of the present invention includes a box 1, two barriers 2, two condensers 3, and two first evaporators 4.
The box body 1 forms a cavity for arranging a drying chamber; the two blocking pieces 2 are fixedly arranged in the box body 1, and divide the cavity into three independent spaces which are respectively a first cavity, a second cavity and a drying chamber; the drying chamber is positioned between the first chamber and the second chamber.
The two condensers 3 are respectively and fixedly arranged on the two barrier pieces 2 correspondingly, are positioned at two sides of the drying chamber and are communicated with the drying chamber. At least one air inlet 221 and at least one air outlet 211 are respectively arranged on the two barriers 2; the condenser 3 and the first evaporator 4 are respectively located inside and outside the air inlet 221, and are opposite to the air inlet 221. The air inlets 221 are respectively provided with a fan 9 for blowing air in the first chamber and the second chamber to the condenser 3, raising the temperature of the air by the condenser 3, and then entering the drying chamber. Each air outlet 211 is respectively communicated with the first cavity and the drying chamber, the second cavity and the drying chamber, and high-humidity air in the drying chamber is introduced into the first cavity and the second cavity; two first evaporimeters 4 set up respectively in first cavity, the second cavity in two baffler 2's the outside, condense the dehumidification to the highly humid air by in first cavity, the second cavity respectively, reach the purpose of drying to the interior material of treating of drying chamber.
When drying operation is carried out, the fan 9 blows air to the two condensers 3 in the drying chamber, and high-temperature air flow is formed after the air is heated by the condensers 3 and blows the materials to be dried in the drying chamber. Because the drying chamber is positioned between the two condensers 3, high-heat air flows enter from two sides of the drying chamber, so that the flow field in the drying chamber is more uniform, the temperature distribution in the drying chamber is more uniform, the drying quality of materials to be dried in the drying chamber is improved, and the economic benefit is increased.
In one embodiment, referring to fig. 1, 2, 3 and 4, the barrier 2 includes a first partition 21 and a second partition 22; the two first partition plates 21 are respectively positioned at the inner sides of the two second partition plates 22; the two condensers 3 are located between the first partition 21 and the second partition 22 of the two barriers 2, respectively. Each air inlet 221 is arranged on the second partition plate 22; each air outlet 211 is provided on the first partition 21.
The shape and size of the second partition plate 22 are matched with the shape and size of the condenser 3; the edges of the second partition plates 22 are respectively connected with the first partition plates 21; the first partition 21 is uniformly provided with a plurality of ventilation openings at positions corresponding to the condenser 3, and the ventilation openings are uniformly formed through holes 212 for communicating the condenser 3 with the drying chamber.
When the fan 9 drives the air flow to blow to the condenser 3 and become high-heat air, the high-heat air enters the drying chamber through the through holes 212 uniformly formed in the first partition plate 21, so that the high-heat air uniformly enters the drying chamber, the uniformity of a flow field in the drying chamber is further improved, the uniformity of temperature distribution in the drying chamber is further improved, the drying quality of materials to be dried in the drying chamber is finally further improved, and the economic benefit is improved.
Preferably, the first separator 21 and the second separator 22 are both flat plate-shaped structures; inward folded edges 222 are arranged at the upper edge and the lower edge of the second clapboard 22; the edge of the folded edge 222 is connected with the first partition board 21, so that the first partition board 21 and the second partition board 22 partition the cavity in the box body 1 into a first chamber, a second chamber and a drying chamber. Each air inlet 221 is arranged on the second partition plate 22; each of the air outlets 211 is provided on the first partition 21 located outside the periphery of the second partition 22. The barrier 2 has simple structure, simple operation process, convenient operation and improved assembly efficiency.
Preferably, each through hole 212 includes an extending edge extending from the first partition 21 to the inside of the drying chamber, and has guiding and pressurizing functions for the high-heat air flow formed by heating through the condenser 3, so that the high-heat air in the drying chamber has higher flow rate, the penetrating power of the high-heat air is increased, the materials to be dried are heated comprehensively, the regions which cannot be heated are avoided, the drying quality of the materials to be dried is improved, and the economic benefit is improved.
In an embodiment, referring to fig. 2, the air outlets 211 are respectively disposed at the upper end and the lower end of the first partition 21, and guide the lower low heat humid air and the upper high heat humid air to the first chamber and the second chamber for dehumidification. The ventilation opening is arranged between the air outlet 211 at the upper end and the air outlet 211 at the lower end of the first clapboard 21; the second partition 22 is located between the air outlet 211 at the upper end and the air outlet 211 at the lower end of the first partition 21.
Preferably, referring to fig. 2, two air inlets 221 are formed on the second partition 22; the size of the air outlet 211 on the first partition 21 is smaller than that of the air inlet 221, and a plurality of air outlets are provided.
In addition, it should be noted that the air outlet 211 may be disposed at any one, two, or three positions of the upper end, the lower end, or the middle portion of the first partition 21; the number of the air outlets 211 may also be set as desired.
In some embodiments, referring to fig. 1, 2, 3 and 4, the refrigerant compressor further includes two second evaporators 5 and two sets of refrigerant compression assemblies 7; the two second evaporators 5 are arranged above the box body 1 and are respectively connected with the two first evaporators 4 in parallel correspondingly; the two sets of the first evaporator 4 and the second evaporator 5 respectively form two heat pump circulation systems with the refrigerant compression assemblies 7 and the condensers 3.
In the heat pump drying device of the embodiment, the two first evaporators 4 condense the hot and humid air in the first chamber and the second chamber to generate condensed water to be discharged, so as to realize dehumidification; the heat is absorbed by the second evaporator 5 arranged outside the box body 1, and the efficiency of the heat pump drying device is improved.
This embodiment makes the setting of pipeline simpler and convenient through setting up two sets of heat pump circulations, reduces the production degree of difficulty, improves production efficiency.
In some embodiments, referring to fig. 1, 2, 3 and 4, two total heat exchangers 6 are further included, which are disposed outside the box body 1, and each of the two total heat exchangers includes a fresh air channel 61 and an exhaust air channel 62, and respectively communicate the first chamber, the second chamber and the outdoor space, and the drying chamber and the outdoor space, so as to introduce fresh air into the first chamber and the second chamber and exhaust waste air from the drying chamber.
Specifically, the fresh air channel 61 includes a fresh air inlet 611, a fresh air outlet 612, and a fresh air duct 613; the air exhaust channel 62 includes an air exhaust inlet 621, an air exhaust outlet 622, and an air exhaust duct 623. The two fresh air inlets 611 are respectively arranged above the first cavity and the second cavity, and the fresh air entering the drying chamber is heated by the condenser 3; preferably, the fresh air supply opening 612 is provided inside the first evaporator 4. The two air exhaust air inlets 621 are respectively arranged at different positions above the drying chamber; when the waste gas needs to be discharged, the waste gas in the drying chamber is discharged as much as possible. The fresh air pipe 613 and the exhaust pipe 623 exchange heat alternately, so that heat in the waste gas is recovered.
The embodiment introduces fresh air and exhaust waste gas through the total heat exchanger 6, changes the air in the drying chamber, avoids the influence of the smell released by the materials to be dried in the drying chamber, and improves the drying quality. In addition, the efficiency of the heat pump drying device is improved by recovering the heat of the exhaust gas by the total heat exchanger 6.
In an embodiment, referring to fig. 1, 2, 3 and 4, two third evaporators 8 are further included, which are respectively and correspondingly disposed at the end of the exhaust channel 62, i.e., inside the exhaust outlet 622, and are connected in parallel with the first evaporator 4 and the second evaporator 5 to form a heat pump cycle system with one refrigerant compression assembly 7, so as to further recover heat carried by the exhausted waste gas, thereby further improving the efficiency of the heat pump drying device.
Preferably, the first evaporator 4, the second evaporator 5 and the third evaporator 8 are connected in parallel and are controlled to be connected or disconnected by an electromagnetic valve, and the operation mode of the heat pump drying device is controlled by controlling the opening or closing of the electromagnetic valve. For example, only the electromagnetic valve for controlling the first evaporator 4 is opened, and the electromagnetic valves for the second evaporator 5 and the third evaporator 8 are closed, so that the heat pump drying device works in the temperature stabilizing dehumidification mode; and only opening the electromagnetic valve for controlling the second evaporator 5, and closing the electromagnetic valves for controlling the first evaporator 4 and the third evaporator 8, so that the heat pump drying device works in a temperature rising mode. Opening electromagnetic valves for controlling the first evaporator 4 and the second evaporator 5, and closing electromagnetic valves for controlling the third evaporator 8 to enable the heat pump drying device to be in a temperature-raising dehumidification mode; and opening an electromagnetic valve for controlling the third evaporator 8 and electromagnetic valves of any first evaporator 4 and any second evaporator 5 to enable the heat pump drying device to work in a fresh air mode.
The heat pump drying device of this embodiment includes a plurality of mode, and can realize a tractor serves several purposes and a dragon stoving operation according to different stages and different material adjustment mode, improves user experience, improves economic benefits.
In an example, referring to fig. 4 and 5, the condenser 3 and the first evaporator 4 located at two sides of the drying chamber form a heat pump cycle system, so that the refrigerant pipeline of the heat pump cycle system is more convenient to set.
In an embodiment, referring to fig. 1 and 2, the box 1 is a square box, and includes two first side plates 11, two second side plates 12, a top plate 13, and a bottom plate; each first side plate 11 and the barrier 2 tend to be arranged in parallel; each second side plate 12 tends to be arranged perpendicular to barrier 2; the refrigerant compression component 7 and the total heat exchanger 6 are both arranged on the top plate 13; a material conveying port 121 is arranged on each second side plate 12 corresponding to the drying chamber and used for putting in or taking out materials; or the track is arranged to penetrate through the drying chamber through the material conveying port 121, so that production line type drying is realized, and the drying efficiency is improved.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., 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 are not necessarily intended to 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. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (10)
1. A heat pump drying device is characterized by comprising:
a case forming a cavity;
the two blocking pieces are fixedly arranged in the box body and divide the cavity into a first cavity, a second cavity and a drying chamber; the drying chamber is positioned between the first chamber and the second chamber;
the two condensers are respectively fixedly arranged on the barrier piece, positioned at two sides of the drying chamber and communicated with the drying chamber;
the two first evaporators are respectively and fixedly arranged in the first chamber and the second chamber; at least one air inlet and at least one air outlet are respectively arranged on the two blocking parts; a fan is respectively arranged at each air inlet; the condenser and the first evaporator are opposite to the air inlet and are respectively and correspondingly arranged on the inner side and the outer side of the air inlet;
each air outlet is respectively communicated with the first cavity and the drying chamber, and the second cavity and the drying chamber.
2. The heat pump drying apparatus of claim 1, wherein the barrier comprises a first partition, a second partition; the two first partition plates are respectively positioned at the inner sides of the two second partition plates; the two condensers are respectively positioned between the first partition plate and the second partition plate of the two barriers;
the second clapboard is matched with the condenser in an installing way, and the edge of the second clapboard is connected with the first clapboard; the air inlet is formed in the second partition plate; the air outlet is formed in the first partition board on the periphery of the second partition board; and the first partition plate is provided with a vent which is a plurality of uniformly arranged through holes corresponding to the second partition plate.
3. The heat pump drying apparatus of claim 2, wherein each of the through holes includes an extension side extending from the first partition toward the drying chamber.
4. The heat pump drying apparatus according to claim 2,
the first partition plate is of a flat plate-shaped structure;
the second partition board is of a flat structure, and the upper end and the lower end of the second partition board are respectively provided with an inward folded edge; the edge of the folded edge is connected with the first clapboard; the condenser is located between the first separator and the second separator.
5. The heat pump drying device according to claim 2, wherein the air outlet is disposed at an upper end and/or a lower end of the first partition plate, respectively.
6. The heat pump drying device according to any one of claims 1 to 5, further comprising two second evaporators, two refrigerant compression assemblies; the two second evaporators are arranged outside the box body and are respectively connected with the two first evaporators in parallel correspondingly; the two groups of first evaporators and the two groups of second evaporators respectively form two heat pump circulating systems with the refrigerant compression assemblies and the condensers.
7. The heat pump drying device of claim 6, further comprising two total heat exchangers disposed outside the cabinet, each comprising a fresh air channel and an exhaust air channel, and respectively communicating the first chamber, the second chamber and the outdoor space, and the drying chamber and the outdoor space, for introducing fresh air into the first chamber and the second chamber and exhausting waste air from the drying chamber.
8. The heat pump drying device according to claim 7, further comprising two third evaporators respectively disposed at the ends of the two exhaust channels, and respectively connected in parallel with the two first evaporators and the two second evaporators.
9. The heat pump drying device according to any one of claims 1 to 5, wherein the box is a square box comprising two first side plates, two second side plates, a top plate and a bottom plate; each first side plate and the barrier piece tend to be arranged in parallel; each second side plate and the barrier piece tend to be vertically arranged; a material conveying port is arranged on each second side plate corresponding to the drying chamber; for transporting the material.
10. The heat pump drying device according to any one of claims 1 to 5, further comprising a plurality of air outlet channels respectively disposed in the first chamber and the second chamber; one end of each air outlet channel is connected with each air outlet, and the other end of each air outlet channel is arranged on the outer side of the first evaporator in the first cavity and the second cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021045275.4U CN212457663U (en) | 2020-06-09 | 2020-06-09 | Heat pump drying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021045275.4U CN212457663U (en) | 2020-06-09 | 2020-06-09 | Heat pump drying device |
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| Publication Number | Publication Date |
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| CN212457663U true CN212457663U (en) | 2021-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021045275.4U Expired - Fee Related CN212457663U (en) | 2020-06-09 | 2020-06-09 | Heat pump drying device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113883845A (en) * | 2021-10-19 | 2022-01-04 | 江苏慧朗能源科技有限公司 | Double-condensing box type dryer hopper |
-
2020
- 2020-06-09 CN CN202021045275.4U patent/CN212457663U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113883845A (en) * | 2021-10-19 | 2022-01-04 | 江苏慧朗能源科技有限公司 | Double-condensing box type dryer hopper |
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