CN112923676B - Heat pump drying unit - Google Patents
Heat pump drying unit Download PDFInfo
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- CN112923676B CN112923676B CN202110177329.5A CN202110177329A CN112923676B CN 112923676 B CN112923676 B CN 112923676B CN 202110177329 A CN202110177329 A CN 202110177329A CN 112923676 B CN112923676 B CN 112923676B
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- dehumidification
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
- F26B9/06—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
- F26B21/002—Drying-air generating units, e.g. movable, independent of drying enclosure heating the drying air indirectly, i.e. using a heat exchanger
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/02—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure
- F26B21/04—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure partly outside the drying enclosure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
- F26B21/08—Humidity
- F26B21/086—Humidity by condensing the moisture in the drying medium, which may be recycled, e.g. using a heat pump cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Drying Of Gases (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses a heat pump drying unit which comprises a shell and a dehumidification unit arranged in the shell, wherein the shell is provided with an air inlet, an air supply outlet, a dehumidification outlet, a ventilation opening and an air outlet, the shell is internally divided into an independent circulating air cavity and an independent air exchange cavity, the ventilation opening enables the circulating air cavity to be communicated with the outside, the dehumidification opening is communicated with the air exchange cavity, and the air outlet is used for being communicated with an inner cavity of a drying chamber to enable wet air in the drying chamber to enter the air exchange cavity. In the dehumidification mode and the dehumidification and dehumidification mode, a single evaporator in the dehumidification unit participates in work, the evaporator participates in air drying heat exchange in the dehumidification mode, air in a drying chamber and air supplemented by a ventilation port both pass through the evaporator in the dehumidification and dehumidification mode, the evaporator has functions similar to those of the conventional external evaporator, the dehumidification function and the dehumidification and dehumidification function can be realized through one evaporator, and the structure of the unit is simplified.
Description
Technical Field
The invention relates to the technical field of dryers, in particular to a heat pump dryer group.
Background
The heat pump drying unit generally utilizes the inverse Carnot principle to absorb heat from the surrounding environment and convey hot air into the drying chamber, and is mainly applied to the drying and dehydrating processes of drying objects such as food, medicinal materials, wood, agricultural and sideline products, industrial products and the like.
Disclosure of Invention
In view of this, the present invention provides a heat pump dryer set, in which one evaporator can be used as both an inner evaporator and an outer evaporator to achieve the humidity discharging and dehumidifying functions, thereby simplifying the structure of the heat pump dryer set.
The invention provides a heat pump drying unit which comprises a shell and a dehumidification unit arranged in the shell, wherein the shell is provided with an air inlet, an air supply outlet, a dehumidification outlet, a ventilation opening and an air outlet, the shell is internally divided into an independent circulating air cavity and an independent air exchange cavity, the ventilation opening enables the circulating air cavity to be communicated with the outside, the air inlet is communicated with an inner cavity of a drying chamber and enables cold air in the drying chamber to enter the shell, the air supply outlet is communicated with the inner cavity of the drying chamber and enables hot air in the shell to enter the drying chamber, the dehumidification opening is communicated with the air exchange cavity and is used for sucking air in the air exchange cavity to enable negative pressure environment to be formed in the air exchange cavity, the air outlet is communicated with the inner cavity of the drying chamber and enables humid air in the drying chamber to enter the air exchange cavity, the dehumidification unit comprises a compressor, a condenser and an evaporator which are sequentially connected, the evaporator is arranged at the air inlet and is used for condensing and dehumidifying air flowing in through the ventilation opening, and the condenser is arranged in the circulating air cavity and then flows out through the air supply outlet.
Further, the casing is the cuboid structure, be provided with the U-shaped baffle in the casing, U-shaped baffle opening side and casing front side board fixed connection, the U-shaped baffle inner wall encloses into independent cavity with casing front side board, roof and bottom plate, separates for the installation cavity that is located the top and the ventilation chamber that is located the below through the horizontal dividing plate in this independent cavity, the circulation wind chamber is enclosed into with casing inner wall to the U-shaped baffle outer wall, the compressor is located the installation cavity.
Further, form the circulation wind channel between U-shaped baffle left side wall and the casing left side board and between U-shaped baffle right side wall and the casing right side board, the condenser includes two lateral part condensers, two the lateral part condenser is installed respectively in two circulation wind channels, the air intake is seted up on the casing front side board and is provided with two, two air intakes respectively with two circulation wind channel intercommunications.
Further, install air intake fan on the air intake, install the air inlet box with the air intake intercommunication in the casing front side board, install in the air inlet box the evaporimeter, air inlet box inner chamber and circulating air duct intercommunication are in order to flow the air drainage after the condensation dehumidification to circulating air duct.
Further, the air inlet box is located trades the wind intracavity, the air exit is located between two air inlet boxes.
Further, the supply-air outlet is opened in the casing roof, the supply-air outlet is located between casing posterior lateral plate and the U-shaped baffle posterior lateral wall, install air supply fan on the supply-air outlet, the condenser still includes the top condenser, the top condenser is installed in the circulation wind intracavity and is located the supply-air outlet inboard.
Furthermore, the moisture exhaust port is arranged on the rear side plate of the shell, and a moisture exhaust fan is arranged on the moisture exhaust port.
Furthermore, an air exhaust one-way valve is arranged on the air outlet, and air supply flow flows from the drying chamber to the air exchange cavity.
Furthermore, the scavenge port is opened on the casing front side board, be connected with the scavenging box in the casing front side board, the scavenging box passes through the pipeline intercommunication with the air inlet box, install the check valve of taking a breath that supplies the ambient air to get into the scavenging box on the scavenge port.
Further, the moisture exhaust port is communicated with the air exchange cavity through a moisture exhaust pipeline, and the moisture exhaust port, the air inlet end of the moisture exhaust pipe and the air outlet are arranged right front to back.
The invention has the beneficial effects that:
in the invention, under a dehumidification mode and a dehumidification and dehumidification mode, a single evaporator participates in work, the evaporator under the dehumidification mode participates in air drying and heat exchange, the evaporator has a function similar to that of the existing inner steam, under the dehumidification and dehumidification mode, the air in a drying chamber and the air supplemented by a ventilation port both pass through the evaporator, at the moment, the evaporator has a function similar to that of the existing outer evaporator, the temperature of the supplemented air is increased by mixing the air at two positions, and further, the refrigerant in the evaporator can be evaporated and gasified, the influence of the low external environment temperature in the refrigerant evaporation link is prevented, the reliable operation of the heat pump drying unit under the low-temperature environment is ensured, the operation range of the unit is expanded, the dehumidification function and the dehumidification and dehumidification function can be realized through one evaporator, and the structure of the unit is simplified.
Drawings
The invention is further described below with reference to the figures and examples.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic sectional view of I-I of FIG. 1;
FIG. 3 is a schematic sectional view of II-II of FIG. 1;
description of the reference numerals:
1-a machine shell; 2-circulating air cavity; 2 a-a circulating air duct; 3-ventilating cavity; 4-a compressor; 5 a-side condenser; 5 b-Top condenser; 6-an evaporator; 7-U-shaped baffles; 8-diaphragm plate; 9-mounting a cavity; 10-an air intake fan; 11-an air inlet box; 12-an air supply fan; 13-a moisture removal fan; 14-air exhaust one-way valve; 15-a ventilation box; 16-a ventilation check valve; 17-a moisture removal pipe;
101-an air inlet; 102-air supply outlet; 103-a moisture removal port; 104-a ventilation port; 105-air outlet.
Detailed Description
In this embodiment, the air intake blower 10 is correspondingly installed at the air intake 101, the air supply blower 12 is correspondingly installed at the air supply port 102, the moisture exhaust blower 13 is correspondingly installed at the moisture exhaust port 103, the ventilation check valve 16 is correspondingly installed at the ventilation port 104, and the air exhaust check valve 14 is correspondingly installed at the air exhaust port 105;
the embodiment provides a heat pump drying unit, which comprises a machine shell 1 and a dehumidification unit arranged in the machine shell 1, wherein the machine shell 1 is provided with an air inlet 101, an air supply outlet 102, a dehumidification outlet 103, a ventilation opening 104 and an air exhaust outlet 105, the interior of the machine shell 11 is divided into an independent circulating air cavity 2 and an independent air exchange cavity 3, the ventilation opening 104 enables the circulating air cavity 2 to be communicated with the outside, the air inlet 101 is used for being communicated with the inner cavity of a drying chamber and enabling cold air in the drying chamber to enter the shell, the air supply outlet 102 is used for being communicated with the inner cavity of the drying chamber and enabling hot air in the shell to enter the drying chamber, the dehumidification opening 103 is communicated with the air exchange cavity 3 and used for sucking air in the air exchange cavity 3 to form a negative pressure environment in the air exchange cavity 3, the air exhaust outlet 105 is used for being communicated with the inner cavity of the drying chamber and enabling the wet air in the drying chamber to enter the air exchange cavity 3, the dehumidification unit comprises a compressor 4, a condenser and an evaporator 6 which are sequentially connected, the evaporator 6 is arranged at the air inlet 101 and used for condensing and dehumidifying air flowing in the dehumidification unit after the air inlet 101 and the air flows out through the ventilation opening 102, and the condenser is arranged in the dehumidifying unit.
The compressor 4 is used for compressing the refrigerant, the high-temperature and high-pressure refrigerant generated by compression flows into the condenser, the air flowing through the condenser in the circulating air cavity 2 is heated and is sent into the drying chamber through the air supply opening 102, the high-temperature gas flows into the drying chamber and dries and dehydrates the objects to be dried in the drying chamber, then the wet air in the drying chamber flows back to the circulating air cavity 2 through the air inlet 101 in a circulating manner, the low-temperature refrigerant in the evaporator 6 in the circulating air cavity 2 exchanges heat and condenses, and the moisture in the high-temperature air is attached to the surface of the evaporator 6 during condensation, so that the moisture in the air is removed, and the drying and dehumidifying purposes are achieved.
Specifically, the unit has a dehumidification mode and a dehumidification mode, when the dehumidification mode is performed, the dehumidification opening 103, the air outlet 105 and the ventilation opening 104 do not participate in the whole air flow circulation, at the time, the air flow completes the circulation through the air supply opening 102, the drying chamber and the air inlet 101, at the time, the evaporator 6 is equivalent to the inner evaporator 6, when the dehumidification mode is performed, at the time, the dehumidification opening 103, the air outlet 105 and the ventilation opening 104 participate in the whole air flow circulation, the dehumidification opening 103 draws air outwards, so that a negative pressure environment is formed in the air exchange chamber 3, further, the air in the drying chamber is sucked into the air exchange chamber 3 through the air outlet 105, so that the air in the drying chamber is exhausted to the outside, in addition, the air flow completes the drying circulation through the air supply opening 102, the drying chamber and the air inlet 101, because part of the air is exhausted from the outside, so that the air circulation chamber 2 has a pressure difference with the outside, at the moment, the outside air flows into the circulation chamber 2 through the ventilation opening 104, and dehumidified air is dehumidified through the evaporator 6, wherein in the dehumidification mode and the dehumidification mode, further, the evaporator 6 works, the evaporator 6 is capable of ensuring that the air is capable of supplementing and the evaporator 6, the evaporator 6 is capable of ensuring that the evaporator temperature of supplementing operation of the evaporator 6 is increased under the low temperature of the indoor air-temperature of the dehumidification mode, and the evaporator 6, thereby, and the evaporator is ensured.
In this embodiment, casing 1 is the cuboid structure, be provided with U-shaped baffle 7 in the casing 1, U-shaped baffle 7 opening side and casing 1 preceding curb plate fixed connection, 7 inner walls of U-shaped baffle surround into independent cavity with casing 1 preceding curb plate, roof and bottom plate, separate for the installation cavity 9 that is located the top and the ventilation chamber 3 that is located the below through horizontal baffle 8 in this independent cavity, 7 outer walls of U-shaped baffle surround into circulation wind chamber 2 with casing 1 inner wall, compressor 4 is located installation cavity 9. In the embodiment, the front-back and left-right directions are the same as the directions in fig. 1, the arrangement of the U-shaped baffle 7 is favorable for separating the interior of the machine shell 1 into different chambers, three chambers are arranged in the machine shell 1, components such as a unit, a liquid storage tank and the like of the compressor 4 are positioned in the installation cavity 9, and in order to be favorable for subsequent overhaul of the compressor 4, an overhaul door can be arranged on the front side wall of the machine shell 1 to facilitate overhaul in the installation cavity 9; circulation wind cavity 2, trade wind cavity 3 and the three cavity mutual independence of installation cavity 9, each part wind current is relatively independent, does not influence each other, does benefit to orderly, the high efficiency of each mode and goes on, can accomplish the functional area division in the casing 1 through two parts of U-shaped baffle 7 and cross slab 8 in addition, does benefit to the part quantity that reduces casing 1 inside, simplifies the structure in the casing 1.
In this embodiment, form circulation wind channel 2a between 7 left side walls of U-shaped baffle and the 1 left side board of casing and 7 right side walls of U-shaped baffle and the 1 right side board of casing, the condenser includes two lateral part condensers 5a, two the lateral part condenser is installed respectively in two circulation wind channels 2a, air intake 101 is seted up on the 1 front side board of casing and is provided with two, two air intake 101 respectively with two circulation wind channels 2a intercommunications. Combine shown in fig. 3, circulation wind channel 2a belongs to a part of circulation wind chamber 2, and in two circulation wind channels 2a were got into respectively to the indoor air current of drying through two air intakes 101, respectively set up a lateral part condenser 5a in two circulation wind channels 2a alone for to the air current heating of process, this structure does benefit to the air current of air inlet and forms two branches, does benefit to the heat exchange of air current, does benefit to and improves the air current temperature, and then improves the stoving effect.
In this embodiment, install air intake fan 10 on the air intake 101, install the air inlet box 11 with air intake 101 intercommunication in the casing 1 front side board, install in the air inlet box 11 evaporimeter 6, air inlet box 11 inner chamber and circulation wind channel 2a intercommunication are in order to be in the air drainage to circulation wind channel 2a after the condensation dehumidification. As shown in fig. 3, each air inlet 101 is provided with an air inlet box 11, the two air inlet boxes 11 are separately communicated with the two circulation air ducts 2a, so that the air flow from the air inlet 101 is divided into two branches, the lateral parts of the air inlet boxes 11 are communicated with the circulation air ducts 2a through pipes, and the air flow in the drying chamber is pumped into the air inlet boxes 11 by the air inlet fans and generates sufficient heat exchange with the evaporators 6 in the air inlet boxes 11, thereby improving the dehumidification effect.
In this embodiment, the air inlet boxes 11 are located in the ventilation cavity 3, and the air outlet 105 is located between the two air inlet boxes 11. The air inlet box 11 is installed in the air exchange cavity 3, when in a dehumidification and dehumidification mode, hot air in the drying chamber flows to the air exchange cavity 3, and is favorable for generating heat exchange with the air inlet box 11, so that the temperature of the air inlet box 11 is increased, the temperature of air in the air inlet box 11 is further increased, the evaporation and gasification of a refrigerant in the evaporator 6 at the moment are further ensured, and the refrigerant evaporation link is prevented from being influenced due to too low external environment temperature.
In this embodiment, the air supply opening 102 is opened in the top plate of the casing 1, the air supply opening 102 is located between the rear side plate of the casing 1 and the rear side wall of the U-shaped baffle 7, the air supply opening 102 is provided with an air supply fan 12, the condenser further includes a top condenser 5b, and the top condenser 5b is installed in the circulating air cavity 2 and located inside the air supply opening 102. The air current in two circulation wind channel 2a flows backward to the mixture of circulation wind chamber 2 rear side, and it is indoor to flow to get into the drying chamber through supply-air outlet 102 upwards, combine shown in fig. 1, supply-air outlet 102 has seted up two, all install air supply fan 12 on every supply-air outlet 102 with increase circulation air quantity, top condenser 5b is used for carrying out further heating to the air current before getting into the drying chamber, in order to improve the stoving effect, wherein lateral part condensate gas and top condenser 5b all are connected with compressor 4 and evaporimeter 6, refrigerant in the compressor 4 flows respectively to three condenser through three branch road, then flow to in the evaporimeter 6, concrete not being in the repeated description.
In this embodiment, the moisture exhaust port 103 is provided on a rear side plate of the casing 1, and the moisture exhaust fan 13 is installed on the moisture exhaust port 103. The moisture exhaust port 103 is arranged on the rear side plate of the machine shell 1, the air inlet 101 is arranged on the front side plate of the machine shell 1, and the air supply port 102 is arranged on the top plate of the machine shell 1, so that the positions of the air ports are not interfered with each other, the layout of parts of corresponding parts in the machine shell 1 is facilitated, and the difficulty of the spatial layout of the parts in the machine shell 1 is reduced.
In this embodiment, the air outlet 105 is provided with an air outlet check valve 14 through which the air supply flow flows from the drying chamber to the air exchanging chamber 3. Referring to fig. 1, in this embodiment, in order to ensure a large circulation air volume, three air outlets 105 are provided, and an air exhaust check valve 14 is disposed at the air outlets 105, so that when a negative pressure environment is formed in the air exchange cavity 3, resulting in a pressure difference between the air exchange cavity 3 and the drying chamber, the air exhaust check valve 14 is automatically opened, and the opening pressure of the air exhaust check valve 14 should be controlled to ensure accurate opening of the air exhaust check valve 14.
In this embodiment, the ventilation port 104 is opened on a front side plate of the casing 1, a ventilation box 15 is connected in the front side plate of the casing 1, the ventilation box 15 is communicated with the air intake box 11 through a pipeline, and a ventilation check valve 16 for allowing outside air to enter the ventilation box 15 is installed on the ventilation port 104. Referring to fig. 1, the plurality of air exchanging ports 104 are arranged horizontally, each air exchanging port 104 is provided with an air exchanging check valve 17, the air exchanging box 15 is of an elongated box-shaped structure and covers the inside of the air exchanging port 104, so that each air exchanging port 104 is communicated with the inner cavity of the air exchanging box 15, wherein the air exchanging box 15 is located in the installation cavity 9, that is, the air exchanging port 104 is located above the air inlet 101, that is, the air entering through the air exchanging port 104 is far away from the air at the air inlet 101, so as to prevent mutual interference.
In this embodiment, the moisture discharging port 103 is communicated with the ventilation cavity 33 through the moisture discharging pipeline 17, and the moisture discharging port 103, the air inlet end of the moisture discharging pipe and the air outlet 105 are arranged right front and back. Referring to fig. 3, the moisture exhaust pipe is a straight pipe, and the moisture exhaust port 103, the moisture exhaust pipe and the air exhaust port 105 are located on a straight line to reduce wind flow resistance and accelerate air exchange.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (8)
1. The utility model provides a heat pump drying unit which characterized in that: the dehumidifying unit comprises a shell and a dehumidifying unit arranged in the shell, wherein the shell is provided with an air inlet, an air supply outlet, a dehumidifying outlet, a scavenging vent and an air outlet, the shell is internally divided into an independent circulating air cavity and an air exchange cavity, the scavenging vent enables the circulating air cavity to be communicated with the outside, the air inlet is used for being communicated with an inner cavity of a drying chamber and enabling cold air in the drying chamber to enter the shell, the air supply outlet is used for being communicated with the inner cavity of the drying chamber and enabling hot air in the shell to enter the drying chamber, the dehumidifying outlet is used for sucking air in the air exchange cavity to enable the air exchange cavity to form a negative pressure environment, the air outlet is used for being communicated with the inner cavity of the drying chamber and enabling humid air in the drying chamber to enter the air exchange cavity, the dehumidifying unit comprises a compressor, a condenser and an evaporator which are sequentially connected, the evaporator is arranged at the air inlet and used for condensing and dehumidifying air flowing in through the scavenging vent, and the condenser is arranged in the circulating air after being heated and flowing out through the air supply outlet;
the shell is of a cuboid structure, a U-shaped baffle is arranged in the shell, the opening side of the U-shaped baffle is fixedly connected with the front side plate of the shell, the inner wall of the U-shaped baffle, the front side plate of the shell, the top plate and the bottom plate enclose an independent cavity, the independent cavity is divided into an installation cavity positioned above and an air exchange cavity positioned below through a transverse partition plate, the outer wall of the U-shaped baffle and the inner wall of the shell enclose a circulating air cavity, and the compressor is positioned in the installation cavity;
form the circulation wind channel between U-shaped baffle left side wall and the casing left side board and U-shaped baffle right side wall and the casing right side board, the condenser includes two lateral part condensers, two the lateral part condenser is installed respectively in two circulation wind channels, the air intake is seted up on the casing front side board and is provided with two, two air intakes communicate with two circulation wind channels respectively.
2. The heat pump dryer group of claim 1, wherein: install air intake fan on the air intake, install the air inlet box with the air intake intercommunication in the casing front side board, install in the air inlet box the evaporimeter, air inlet box inner chamber and circulation wind channel intercommunication are in order to flow the air drainage to the circulation wind channel after the condensation dehumidifies.
3. The heat pump dryer group of claim 2, wherein: the air inlet boxes are located in the air exchange cavity, and the air outlet is located between the two air inlet boxes.
4. The heat pump dryer group of claim 1, wherein: the air supply outlet is arranged on the top plate of the casing and located between the rear side plate of the casing and the rear side wall of the U-shaped baffle, the air supply outlet is provided with an air supply fan, the condenser further comprises a top condenser, and the top condenser is arranged in the circulating air cavity and located on the inner side of the air supply outlet.
5. The heat pump dryer group of claim 4, wherein: the dehumidifying port is arranged on the rear side plate of the casing, and a dehumidifying fan is arranged on the dehumidifying port.
6. The heat pump dryer group of claim 1, wherein: and an air exhaust one-way valve for supplying air flow from the drying chamber to the air exchange cavity is arranged on the air outlet.
7. The heat pump dryer group of claim 2, wherein: the air exchange port is arranged on a front side plate of the machine shell, the air exchange box is connected in the front side plate of the machine shell and is communicated with the air inlet box through a pipeline, and the air exchange check valve for allowing outside air to enter the air exchange box is arranged on the air exchange port.
8. The heat pump dryer group of claim 5, wherein: the moisture exhaust port is communicated with the air exchange cavity through a moisture exhaust pipeline, and the moisture exhaust port, the air inlet end of the moisture exhaust pipe and the air outlet are arranged right front to back.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110177329.5A CN112923676B (en) | 2021-02-07 | 2021-02-07 | Heat pump drying unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110177329.5A CN112923676B (en) | 2021-02-07 | 2021-02-07 | Heat pump drying unit |
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| CN112923676A CN112923676A (en) | 2021-06-08 |
| CN112923676B true CN112923676B (en) | 2022-10-18 |
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