Opening and closing integrated heat pump drying unit

Abstract

The utility model relates to an opening and closing integrated heat pump drying unit which comprises a shell, the interior of the shell is divided into a temperature rising evaporation cavity, a compressor cavity, a condensation cavity and a dehumidification evaporation cavity through partition plates, a temperature rising evaporator and a temperature rising fan are installed in the temperature rising evaporation cavity, and a condenser and a condensation fan are installed in the condensation cavity. A dehumidification evaporator and a total heat exchanger are installed in the dehumidification evaporation cavity, a condensation air return opening is formed in the position, corresponding to the dehumidification evaporation cavity, of the shell, a fresh air valve is arranged on the position, corresponding to the condensation cavity, of the shell, the temperature rising fan is a flat plate type fan, and the temperature rising fan, the condensation fan, the fresh air valve and the display screen are all installed in the shell in an embedded mode. The temperature rising fan, the condensation fan, the fresh air valve and the display screen are all of an embedded installation structure, no protruding part is arranged outside the shell, space is saved, stacking and transportation of the unit are facilitated, transportation efficiency is improved, transportation cost is reduced, meanwhile, all the parts do not need to be installed on site, and installation efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of heat pump drying technology, and in particular to an integrated open / close heat pump drying unit. Background Technology

[0002] Heat pump dehumidification and drying units can promote energy substitution in the tobacco industry, support the conversion of tobacco curing barns from coal to electricity, and help achieve economic, social, and ecological benefits.

[0003] Currently, heat pump dehumidification and drying units all include an evaporator chamber and a condenser chamber. The evaporator chamber absorbs heat from the outside, and the condenser chamber releases heat. The evaporator chamber and the condenser chamber are not connected. The heat released by the condenser chamber enters the drying chamber for drying operations. The evaporator chamber is located outside the drying chamber, and the condenser chamber is located inside the drying chamber. The dehumidification device is located below the condenser chamber to dehumidify a portion of the hot air that has completed the drying cycle. The control system controls the heat pump unit to perform heating mode, dehumidification mode, cooling mode, and defrosting mode operations, respectively.

[0004] However, current heat pump dryers generally suffer from the following problems:

[0005] 1. The unit's design dimensions are unreasonable, making it difficult to stack the unit during transportation and resulting in low transportation efficiency.

[0006] 2. The condenser fan, heating fan, and display screen are all installed on the outside of the unit, protruding from the side panel. Due to size limitations, they are not convenient to transport. These components are generally shipped as accessories and need to be installed and wired on-site, which makes construction difficult and the installation workload large.

[0007] 3. The unit code needs to be manually entered on the display screen on site, which is cumbersome and prone to errors. Moreover, since the USB interface of the display screen is on the back, when the unit is installed in a remote area with weak signal, the program cannot be updated online and needs to be updated manually. It is necessary to remove the display screen mounting plate and use an adapter cable to connect to the USB interface on the back of the display screen to update the program. The operation is inconvenient and time-consuming, which seriously affects the efficiency of on-site installation.

[0008] 4. The display screen's height is poorly designed, requiring users to bend over or look up to view it. This makes the screen prone to glare in outdoor environments, resulting in unclear display and affecting daily operation and maintenance. Utility Model Content

[0009] The main technical problem solved by this utility model is to provide an integrated open and close heat pump dryer unit that facilitates unit transportation and on-site installation, and improves installation and transportation efficiency.

[0010] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0011] An integrated openable and closed-loop heat pump dryer unit includes a housing. Inside the housing, a partition separates a heating evaporation chamber, a compressor chamber, a condenser chamber, and a dehumidification evaporation chamber. A heating evaporator and a heating fan are installed in the heating evaporation chamber. A condenser and a condenser fan are installed in the condenser chamber. A dehumidification evaporator and a total heat exchanger are installed in the dehumidification evaporation chamber. A condenser return air vent is opened on the housing corresponding to the dehumidification evaporation chamber, and a fresh air valve is installed on the housing corresponding to the condenser chamber. The heating fan is a flat-plate fan. The heating fan, condenser fan, fresh air valve, and display screen are all embedded in the housing.

[0012] Furthermore, the condenser fan is installed above the condenser, and the top of the condensation chamber is open. A protective cover is installed during transportation, and the protective cover is removed when connecting to the air duct.

[0013] Furthermore, the heating evaporator, dehumidifying evaporator, condenser, and total heat exchanger are all placed obliquely in their respective chambers.

[0014] Furthermore, an electric heater is installed between the condenser fan and the condenser.

[0015] Furthermore, the housing has an opening for mounting a display screen, a mounting frame is embedded in the opening, an openable and closable cover is installed in front of the mounting frame, and the display screen is installed at an angle inside the mounting frame.

[0016] Furthermore, a USB interface is installed inside the mounting frame, and a USB adapter cable through hole is provided on the mounting frame.

[0017] Furthermore, the display screen has a tilt angle of 80°-90° relative to the horizontal plane, tilting from bottom to top forward.

[0018] Furthermore, the installation height of the display screen is 1500mm-1700mm from the ground.

[0019] Furthermore, it includes a set of fixed-frequency refrigerant circulation systems and a set of variable-frequency refrigerant circulation systems, with the heating evaporator, condenser, dehumidifying evaporator and total heat exchanger in both circulation systems installed side by side.

[0020] Furthermore, the width or depth of the housing is less than or equal to 1400 mm.

[0021] In summary, the integrated open / close heat pump dryer unit provided by this utility model has the following advantages compared with the prior art:

[0022] (1) The heating fan, condenser fan, fresh air valve and display screen of this utility model are all installed inside the shell with an embedded installation structure. There are no protruding parts outside the shell. They can be installed on the shell in advance before the unit is transported. The cables can also be arranged inside the unit in advance. This not only saves space and facilitates the packing and transportation of the unit, but also improves transportation efficiency and reduces transportation costs. At the same time, each component does not need to be installed or wired on site, which reduces the amount of on-site installation work and improves installation efficiency.

[0023] (2) The display screen of this utility model is installed at an angle in the open mounting frame, which makes the display screen less reflective in the outdoor environment. Operators can clearly see the content displayed on the display screen, which is especially convenient for viewing in the outdoor environment and is beneficial for daily operation and maintenance.

[0024] (3) This utility model uses a USB adapter cable to install the USB interface inside the mounting frame. The unit code can be input into the display screen by connecting the USB interface to the barcode scanner. The operation is simple and not prone to errors. At the same time, when the unit is installed in a remote area with weak signal, this USB interface can be used to update the program. The operation is simple and quick, which can greatly improve the installation efficiency.

[0025] (4) Through reasonable layout, the width or depth of the unit is controlled at 1400mm, which can be stacked side by side on the transport vehicle, saving space, improving stacking efficiency and reducing transportation costs.

[0026] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0027] The accompanying drawings, as part of this utility model, are used to provide a further understanding of the present utility model. The illustrative embodiments and descriptions of the present utility model are used to explain the present utility model, but do not constitute an undue limitation of the present utility model. Obviously, the drawings described below are merely some embodiments; those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0028] In the attached diagram:

[0029] Figure 1 This is a schematic diagram of the unit structure of this utility model;

[0030] Figure 2 This is a schematic diagram of the internal structure of the unit of this utility model;

[0031] Figure 3 This is a schematic diagram of the wind farm of the unit of this utility model;

[0032] Figure 4 This is a schematic diagram of the display screen installation structure of this utility model;

[0033] Figure 5 This is a side view of the display screen mounting structure of this utility model;

[0034] Figure 6 This is a front structural cross-sectional view of the display screen mounting structure of this utility model;

[0035] Figure 7 This is a schematic diagram of the refrigerant circulation system of the unit in this utility model.

[0036] In the picture:

[0037] Housing 1, Heating Evaporation Chamber 2, Compressor Chamber 3, Condensation Chamber 4, Dehumidifying Evaporation Chamber 5, Heating Evaporator 6, Heating Fan 7, Compressor 8, Gas-Liquid Separator 9, Four-Way Valve 10, Liquid Receiver 11, Electrical Control Box 12, Condenser 13, Condensing Fan 14, Dehumidifying Evaporator 15, Total Heat Exchanger 16, Condensation Return Air Inlet 17, Fresh Air Valve 18, Display Screen 19, Grille 20, Air Inlet 21, Electric Heating 22, Mounting Frame 23, Side Plate 23a, Back Plate 23b, Mounting Frame 23c, Cover Plate 24, USB Adapter Cable Through Hole 25, Fixing Plate 26, Hinge 27, Locking Assembly 28, Lock Cylinder 281, Lock Tongue 282, Locking Buckle 283, Recessed Mounting Plate 284, Bracket 29, Partition 30, Partition 31.

[0038] It should be noted that the accompanying drawings and text description are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0040] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0041] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0042] like Figures 1 to 3 As shown, this embodiment provides an integrated openable and closed heat pump dryer unit, including a housing 1. Inside the housing 1, a longitudinal partition (not shown) separates the indoor side and the outdoor side. The indoor side and the outdoor side are arranged left and right inside the housing 1. The outdoor side is further divided into an upper heating evaporation chamber 2 and a lower compressor chamber 3 by a transverse partition (not shown). The indoor side is further divided into an upper condensation chamber 4 and a lower dehumidification evaporation chamber 5 by a transverse partition.

[0043] A heating evaporator 6 and a heating fan 7 are installed in the heating evaporation chamber 2. A compressor 8, a gas-liquid separator 9, a four-way valve 10, a liquid receiver 11, and an electrical control box 12 are installed in the compressor chamber 3. A condenser 13 and a condenser fan 14 are installed in the condensing chamber 4. A dehumidifying evaporator 15 and a total heat exchanger 16 are installed in the dehumidifying evaporation chamber 5. A condensing return air vent 17 is opened on the shell 1 corresponding to the dehumidifying evaporation chamber 5. A fresh air valve 18 is installed on the shell 1 corresponding to the condensing chamber 4. The display screen 19 is installed inside the shell 1 in an integral embedded manner.

[0044] In this embodiment, it is preferred that the heating fan 7 is a flat-plate fan, the fan duct is recessed and completely embedded in the side plate of the housing 1 corresponding to the heating evaporation chamber 2, and a grille 20 is installed at the air outlet of the housing 1, the grille 20 does not protrude from the housing 1 after installation.

[0045] A vent (not shown in the figure) is provided on the transverse partition on the air inlet side of the heating evaporator 6. Air inlets 21 are provided on the side panels of the corresponding housings 1 of the heating evaporator chamber 2 and compressor chamber 3. Outdoor air enters the compressor chamber 3 through the air inlets 21 under the action of the heating fan 7, and then enters the heating evaporator chamber 2 through the vents on the transverse partition, exchanging heat with the heating evaporator 6. The air inlets 21 are located on the housing 1 of the compressor chamber 3, which facilitates the use of lower-temperature outdoor air to cool the compressor 8.

[0046] In this preferred embodiment, the condenser fan 14 is installed above the condenser 13 and is completely embedded inside the housing 1. The top of the condenser fan 14 is lower than the top plate of the housing 1. The top opening of the condensing chamber 4 is connected to the air duct, and the other end of the air duct is connected to the drying chamber to deliver high-temperature air into the drying chamber for drying purposes. The top opening of the condensing chamber 4 is fitted with a protective cover (not shown in the figure) during transportation and is removed when connecting to the air duct on site.

[0047] An electric heater 22 is installed above the condenser 13 and side by side with the condenser 13. The electric heater 22 is installed between the condenser fan 14 and the condenser 13 to provide auxiliary heating when the temperature does not meet the requirements.

[0048] In this embodiment, preferably, a fresh air valve 18 is provided on the housing 1 on the air inlet side of the condenser 13 in the condensing chamber 4. The fresh air valve 18 is also embedded and is installed inside the corresponding side plate of the housing 1.

[0049] The heating fan 7, condenser fan 14, fresh air valve 18, and display screen 19 are all installed inside the housing 1 using an embedded mounting structure. There are no protruding parts on the outside of the housing 1. They can be pre-installed on the housing 1 before the unit is transported. The cables can also be pre-laid inside the unit. This not only saves space and facilitates the packing and transportation of the unit, but also improves transportation efficiency and reduces transportation costs. At the same time, each component does not need to be installed or wired on-site, reducing the amount of on-site installation work and improving installation efficiency.

[0050] like Figure 1 , Figures 4 to 6 As shown, in this embodiment, the housing 1 has an opening for mounting the display screen 19. The opening is opened on the side plate of the housing 1 corresponding to the heating evaporation chamber 2. A mounting frame 23 is embedded in the opening. An openable and closable cover plate 24 is installed in front of the mounting frame 23. When closed, the cover plate 24 covers the opening. The display screen 19 is installed at an angle inside the mounting frame 23. A USB interface (not shown in the figure) is installed inside the mounting frame 23. A USB adapter cable through hole 25 is provided on the mounting frame 23.

[0051] In this embodiment, the mounting frame 23 consists of four side plates 23a, a back plate 23b, and a mounting frame 23c. The mounting frame 23c extends vertically outward from the front end of the side plates 23a. The mounting frame 23c is generally square in shape and surrounds the opening, being fixedly connected to the housing 1 at the opening with screws. The mounting frame 23c fits snugly against the surface of the housing 1 without protruding from it. The four sides of the back plate 23b are fixedly connected to the four side plates 23a, either by screws or by direct welding. The mounting frame 23 is preferably made of the same material as the housing 1.

[0052] In this embodiment, preferably, the USB interface is installed on the front of the back panel 23b, and the USB interface is fixed to the back panel 23b by a fixing plate 26. A USB adapter cable through hole 25 is provided on the back panel 23b. By installing the USB interface of the USB adapter cable onto the back panel 23b of the mounting frame 23, the unit can be encoded by connecting the barcode scanner to the USB interface and inputting the data into the display screen 19. The operation is simple and error-free. At the same time, when the unit is installed in a remote area with weak signal, this USB interface can be used to update the program. The operation is simple and quick, which can greatly improve the installation efficiency.

[0053] In this embodiment, it is further preferred that the back panel 23b has a forward tilt angle relative to the horizontal plane, and the display screen 19 is mounted on the back panel 23b. All four side panels 23a extend vertically inward from their openings, and the back panel 23b is inclinedly connected to the side panels 23a. The back panel 23b adopts a forward tilt angle from bottom to top, preferably with an angle α of 80°-90°, and more preferably with an angle α of 85°. Thus, after installation, the display screen 19 also has a forward tilt angle from bottom to top, making it less prone to glare in outdoor environments. Operators can clearly see the content displayed on the display screen 19, making it particularly convenient for viewing in outdoor environments, which is beneficial for daily operation and maintenance.

[0054] In this embodiment, it is further preferred that the installation height of the display screen 19 is 1500mm-1700mm from the ground, and more preferably 1500mm. This design height of the display screen 19 is reasonable and suitable for operators of all heights, eliminating the need for operators to bend over or look up, making the design more user-friendly.

[0055] In this embodiment, the cover plate 24 is connected to the mounting frame 23c via a hinge 27. When it is not necessary to view or operate, the cover plate 24 can be closed to protect the internal display screen 19 and USB interface, and it is only opened when it is necessary to view or operate.

[0056] The cover plate 24 can be made of the same material as the housing 1. To make it easier for operators to view the display screen 19, the relevant content on the display screen 19 can be viewed without opening the cover plate 24 when no operation is required. More preferably, the cover plate 24 consists of a ring-shaped frame and a transparent material (not shown in the figure) in the middle. The transparent material can be glass or acrylic, etc. Of course, the cover plate 24 can also be made of a completely transparent material.

[0057] In this embodiment, a locking assembly 28 is provided between the cover plate 24 and the mounting frame 23. The locking assembly 28 includes a lock cylinder 281, a bolt 282, and a latch 283. The lock cylinder 281 and bolt 282 are mounted on the cover plate 24, and the latch 283 is mounted on the mounting frame 23. When an operator rotates the lock cylinder 281 with a key, the bolt 282 rotates, causing the bolt 282 to engage with the latch 283 to achieve locking. When the bolt 282 disengages from the latch 283, the cover plate 24 is unlocked, and the cover plate 24 can be opened. The cover plate 24 has a recessed mounting plate 284, on which the lock cylinder 281 and bolt 282 are fixedly mounted. The keyhole is located on the recessed mounting plate 284.

[0058] like Figures 1 to 3 As shown, in this embodiment, it is further preferred that the heating evaporator 6 in the heating evaporation chamber 2, the condenser 13 in the condensation chamber 4, and the dehumidification evaporator 15 in the dehumidification evaporation chamber 5 are all installed in an inclined manner in the chamber, so as to save internal space, increase the heat exchange area, and improve the heating performance of the unit.

[0059] like Figures 1 to 3 As shown, in this embodiment, it is further preferred that the total heat exchanger 16 is installed at an angle inside the housing 1. The first corner of the total heat exchanger 16 (the angle between the inlet of the first flow channel and the outlet of the second flow channel of the total heat exchanger 16) is fixedly connected to the housing 1 by a bracket 29. The bracket 29 has an open structure, so that when the dehumidifying evaporator 23 is not required to work, the condensing return air directly enters the condensing chamber 12. The second corner of the total heat exchanger 16 (the angle between the outlet of the first flow channel and the outlet of the second flow channel of the total heat exchanger 16) is fixedly connected to the shell 1 through the partition 30, separating the outlet of the first flow channel and the outlet of the second flow channel of the total heat exchanger 16. The third corner of the total heat exchanger 16 (the angle between the outlet of the first flow channel and the inlet of the second flow channel of the total heat exchanger 16) is fixedly connected to the shell 1 and the tube sheet of the dehumidifying evaporator 15 through the partition (not shown in the figure), so that the air flowing out of the outlet of the first flow channel of the total heat exchanger 16 passes through the dehumidifying evaporator 15 and then enters the second flow channel. The fourth corner of the total heat exchanger 16 (the angle between the inlet of the first flow channel and the inlet of the second flow channel of the total heat exchanger 16) is fixedly connected to the shell 1 through the partition 31, separating the inlet of the first flow channel and the inlet of the second flow channel of the total heat exchanger 16.

[0060] Inside the dehumidifying evaporator chamber 5, the inlet of the first flow channel of the total heat exchanger 16 is connected to the condenser return air inlet 5 on the shell 1. The condenser return air exchanges heat with the dehumidifying evaporator 15 after passing through the total heat exchanger 16. The air after heat exchange passes through the second flow channel of the total heat exchanger 16 and exchanges heat with the condenser return air inside the total heat exchanger 16. The air after heat exchange can directly exchange heat with the condenser 13 and is finally sent to the drying room through the air duct. Alternatively, the fresh air valve 18 can be opened to mix with fresh air and then exchange heat with the refrigerant in the condenser 13 before being sent to the drying room through the air duct. When the dehumidifying evaporator 15 is not required to operate, the condenser return air can directly enter the condensing chamber 4, or directly exchange heat with the condenser 13, or mix with fresh air and then exchange heat with the condenser 13.

[0061] When the temperature inside the drying room is high and the outdoor temperature is low, the refrigerant system can be left off. Simply open the fresh air valve 18 and use the condenser fan 14 to introduce low-temperature, dry fresh air into the drying room to cool it down. This process does not require turning on the compressor 8, etc. Reduced power consumption helps lower costs.

[0062] like Figure 2 and Figure 7 As shown in this embodiment, more preferably, the unit includes two independent refrigerant circulation systems, namely a fixed-frequency refrigerant circulation system and a variable-frequency refrigerant circulation system.

[0063] The fixed-frequency refrigerant circulation system includes a fixed-frequency compressor 8a, a gas-liquid separator 9a, a four-way valve 10a, a liquid receiver 11a, a condenser 13a, a dehumidifying evaporator 15a, a heating evaporator 6a, and a total heat exchanger 19a. The variable-frequency refrigerant circulation system includes a variable-frequency compressor 8b, a gas-liquid separator 9b, a four-way valve 10b, a liquid receiver 11b, a condenser 13b, a dehumidifying evaporator 15b, a heating evaporator 6b, and a total heat exchanger 19b. This dual-system setup allows for more precise temperature control of the drying room, thereby ensuring the quality of tobacco and other products.

[0064] In this embodiment, the fixed-frequency compressor 8a and the variable-frequency compressor 8b are installed side by side in the compressor cavity 3. The four-way valve 10a and the four-way valve 10b are both fixedly installed on the longitudinal partition between the compressor cavity 3 and the dehumidification evaporation cavity 5. The gas-liquid separator 9a and the liquid receiver 11a are installed on one side of the corresponding fixed-frequency compressor 8a, and the gas-liquid separator 9b and the liquid receiver 11b are installed on one side of the corresponding variable-frequency compressor 8b.

[0065] Condenser 13a and condenser 13b are installed side-by-side to form a complete condenser 13, and are placed at an angle within the condensation chamber 4. Dehumidifying evaporators 15a and 15b are installed side-by-side to form a complete dehumidifying evaporator 15, and are placed at an angle within the dehumidifying evaporation chamber 5. Heating evaporators 6a and 6b are installed side-by-side to form a complete heating evaporator 6, and are placed at an angle within the heating evaporation chamber 2. Total heat exchangers 16a and 16b are installed side-by-side to form a complete total heat exchanger 16.

[0066] In this embodiment, in the fixed-frequency system and the variable-frequency system, the heating fan 7 and the condensing fan 14 can be set separately, both of which are installed in the housing 1 by an embedded installation method. Of course, it is more preferable that they share one, which helps to simplify the unit structure and reduce costs.

[0067] In this embodiment, through a reasonable layout, the overall dimensions of the machine can be controlled within a height of 2200mm, a width of 1500mm, and a depth of 1400mm, or a width of 1400mm and a depth of 1500mm. Moreover, the casing 1 has no protruding parts, which facilitates the stacking and transportation of the unit, improves transportation efficiency, and reduces transportation costs.

[0068] The heat pump drying unit provided by this utility model has the following advantages:

[0069] 1. The unit uses an embedded installation structure to install the heating fan, condenser fan, fresh air valve, and display screen inside the casing. There are no protruding parts on the outside of the casing. The components can be installed on the casing in advance before the unit is transported. The cables can also be laid inside the unit in advance. This not only saves space and facilitates the packing and transportation of the unit, but also improves transportation efficiency and reduces transportation costs. At the same time, each component does not need to be installed or wired on site, reducing the amount of on-site installation work and improving installation efficiency.

[0070] 2. The unit tilts the display screen within the open mounting frame, making it less reflective in outdoor environments. This allows operators to clearly see the content displayed on the screen, making it particularly convenient for viewing in outdoor environments and facilitating daily operation and maintenance.

[0071] 3. The unit uses a USB adapter cable to install the USB interface inside the mounting frame. The unit code can be input into the display screen via a barcode scanner connected to the USB interface. The operation is simple and error-free. At the same time, when the unit is installed in a remote area with weak signal, this USB interface can be used to update the program. The operation is simple and quick, which can greatly improve the installation efficiency.

[0072] 4. The unit's display screen is designed at a reasonable height, suitable for operators of all heights, so that operators do not have to bend over or look up to view it, making the design more user-friendly.

[0073] 5. With a reasonable layout, the unit's width or depth is controlled within 1400mm, allowing it to be stacked side-by-side on transport vehicles, saving space, improving stacking efficiency, and reducing transportation costs.

[0074] 6. The unit adopts two refrigerant circulation systems, one with fixed frequency and the other with variable frequency, which can more accurately control the temperature of the drying room, thereby ensuring the quality of tobacco and other products.

[0075] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. The implementation schemes in the above embodiments can be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. An integrated heat pump drying unit, comprising a housing, characterized in that: The inside of the shell is separated into a temperature-raising evaporation cavity, a compressor cavity, a condensation cavity and a dehumidification evaporation cavity by partitions, a temperature-raising evaporator and a temperature-raising fan are installed in the temperature-raising evaporation cavity, a condenser and a condensation fan are installed in the condensation cavity, a dehumidification evaporator and a total heat exchanger are installed in the dehumidification evaporation cavity, a condensation return air opening is formed on the shell corresponding to the dehumidification evaporation cavity, and a fresh air valve is arranged on the shell corresponding to the condensation cavity, the temperature-raising fan is a flat fan, and the temperature-raising fan, the condensation fan, the fresh air valve and a display screen are embedded in the shell.

2. The open-close integrated heat pump drying unit according to claim 1, characterized in that: The condensation fan is installed above the condenser, the top of the condensation cavity is open, and a protective cover is installed during transportation, which is removed when connected with the air duct.

3. The open-close integrated heat pump drying unit according to claim 1, characterized in that: The temperature-raising evaporator, the dehumidification evaporator, the condenser and the total heat exchanger are all inclined in the corresponding cavities.

4. The open-close integrated heat pump drying unit according to claim 1, characterized in that: An electric heater is installed between the condensation fan and the condenser.

5. The open-close integrated heat pump drying unit according to claim 1, characterized in that: The shell has an opening for installing a display screen, an installation frame is embedded in the opening, a cover that can be opened and closed is installed in front of the installation frame, and the display screen is inclined and installed in the installation frame.

6. The open-close integrated heat pump drying unit according to claim 5, characterized in that: A USB interface is installed in the installation frame, and a USB adapter hole is arranged on the installation frame.

7. The open-close integrated heat pump drying unit according to claim 5, characterized in that: The display screen has an angle of inclination from bottom to top and forward relative to the horizontal plane, and the inclination angle is 80°-90°.

8. The open-close integrated heat pump drying unit according to claim 5, characterized in that: The installation height of the display screen is 1500mm-1700mm from the ground.

9. The integrated on-off heat pump drying unit according to claim 1, characterized in that: A set of fixed-frequency refrigerant circulation systems and a set of variable-frequency refrigerant circulation systems are included, and the temperature-raising evaporators, the condensers, the dehumidification evaporators and the total heat exchangers in the two sets of circulation systems are installed side by side.

10. The integrated on-off heat pump drying unit according to any one of claims 1-9, characterized in that: The width or depth of the shell is less than or equal to 1400mm.

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