Heat pump type drying device

Abstract

The utility model relates to the technical field of drying, and provides a heat pump type drying device which aims at solving the problems that the dehumidification effect of an existing heat pump type drying device is limited, wet air is continuously accumulated in the using process, and then the equipment performance, the drying efficiency and the product quality are affected. The inner cavity of the box body is divided into an equipment placing area and a material drying area by a side plate in the box body; an air supply port is formed in the side plate close to the bottom, and an air return port is formed in the side plate close to the top; a partition plate is horizontally erected on the equipment containing area, a heat pump is arranged below the partition plate, and a dehumidifier is arranged above the partition plate. Hot air generated by the heat pump enters the material drying area from the air supply outlet, the hot air with increased humidity during drying enters the dehumidifier through the air return inlet to be dehumidified and then enters the heat pump to be recycled, the hot air with high humidity can be separated by the partition plate, and therefore the situation that the heating efficiency of the heat pump is affected by too high humidity is avoided. The device is good in dehumidification effect and high in heating efficiency, and the drying efficiency and the product quality can be effectively guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to drying technical field, specifically, relate to a kind of heat pump type drying device. BACKGROUND

[0002] Heat pump is a kind of equipment using heat transfer principle, can be heated or refrigerated in different environments. It realizes this function by extracting heat from one place and transferring it to another. Heat pump drying device is widely used in agriculture, food industry, pharmaceutical, wood processing and other industry fields. However, the existing heat pump drying device will exist wet air accumulation in the process of use, the moisture in wet air can inhibit the moisture evaporation of the product to be dried, reduce the drying speed, affect the drying efficiency. At the same time, too much humidity will increase the risk of product mildew and deterioration.

[0003] As the patent with publication number CN219454609U, provides a kind of drying installation system, it is related to air energy drying heat pump technical field. The drying installation system includes equipment room, air source heat pump unit, drying unit and return air duct, air source heat pump unit is set in equipment room, air source heat pump unit is separated from external environment;Equipment room, drying unit and return air duct are sequentially communicated, so that the air of suitable temperature after being processed by air source heat pump unit and drying unit can circulate in the drying installation system, so that air source heat pump unit can always be in stable operation under suitable temperature, so that it can be used in cold northern region. However, the drying device only uses the evaporator in air source heat pump unit to dehumidify, and the dehumidification effect is limited. In the environment with very high relative humidity, the evaporator in air source heat pump unit may be caused by the accumulation of condensate, so that the efficiency is reduced, and the moisture cannot be removed continuously and effectively, and the air humidity is too large, which affects the heating efficiency of heat pump, and then affects the drying efficiency and product quality.

[0004] Therefore, it is urgent to provide a heat pump drying device with good dehumidification effect and high heating efficiency. UTILITY MODEL CONTENT

[0005] The utility model aims at solving the problem that the existing heat pump drying device has limited dehumidification effect, and wet air accumulates continuously in the process of use, which affects the performance of the equipment, the drying efficiency and the product quality. The present application provides a heat pump drying device, which can achieve the technical effects of good dehumidification effect and high heating efficiency.

[0006] The utility model discloses a heat pump type drying device, including the box, be provided with the side plate in the box, the side plate divides the inner chamber of the box into equipment placement area and material drying area with, the position of the side plate near the bottom is provided with the air supply outlet, and the position of the side plate near the top is provided with the return air inlet, the equipment placement area is provided with heat pump and dehumidifier, and the equipment placement area is horizontally erected with the baffle, and the heat pump is arranged below the baffle, and the dehumidifier is arranged above the baffle, and the import end surface of dehumidifier faces the return air inlet, and the export end of dehumidifier is communicated with the import end of heat pump through the pipeline.

[0007] Preferably, the top of the box is provided with an air inlet, which is vertically above the equipment placement area; further comprising an air induction fan, the air induction fan is arranged at the air inlet, the air outlet pipe of the air induction fan penetrates into the equipment placement area from the air inlet, and the air outlet pipe of the air induction fan is communicated with another import end of the dehumidifier.

[0008] Preferably, the baffle is two, the baffle includes a first baffle and a second baffle, the equipment placement area is also horizontally erected with a filter screen, and the filter screen is arranged between the first baffle and the second baffle; the export end of the dehumidifier is two, the export end of the dehumidifier includes a processing air outlet and a regeneration air outlet, a first air supply pipe of the processing air outlet and a second air supply pipe of the regeneration air outlet away from one end of the dehumidifier all penetrate through the first baffle, and the air inlet pipe of the heat pump import end away from one end of the heat pump penetrates through the second baffle.

[0009] Preferably, the outer wall surface of the box is provided with an electric control box, and the electric control box is provided with a control system, and the control system is electrically connected with the heat pump, the dehumidifier and the air induction fan respectively.

[0010] Preferably, the heat pump is an air source heat pump, and the dehumidifier is a rotary dehumidifier.

[0011] Preferably, the top of the box is provided with an air outlet, which is vertically above the material drying area; further comprising a dehumidification fan, and the dehumidification fan is arranged at the air outlet.

[0012] Preferably, further comprising a temperature and humidity sensor, the temperature and humidity sensor is arranged on the inner side wall of the box, the temperature and humidity sensor is arranged in the material drying area, and the temperature and humidity sensor is electrically connected with the control system.

[0013] Preferably, further comprising a fan, the fan is installed on the side plate, and the fan is arranged at the air supply outlet, and the fan is electrically connected with the control system.

[0014] Preferably, a plurality of placing net boards are horizontally arranged in the material drying area, and the plurality of placing net boards are arranged in the vertical direction.

[0015] Preferably, the box is further hinged with a box door for opening or closing the material drying area, and the side wall surface of the box is further provided with an equipment maintenance door arranged on one side close to the equipment placing area, and the box door and the equipment maintenance door are both provided with a handle.

[0016] The technical scheme of the utility model has the following beneficial effects:

[0017] (1) The inner cavity of the box is divided into the equipment placing area and the material drying area by the side plate; the hot air generated by the heat pump enters the material drying area through the air supply port; the hot air with increased humidity in the material drying area enters the dehumidifier through the air return port for dehumidification treatment and then enters the heat pump for recycling, and the hot air with high humidity can be separated by the partition plate, so that the heating efficiency of the heat pump is not affected by the high humidity. The device has good dehumidification effect, high heating efficiency, and can effectively guarantee the drying efficiency and product quality.

[0018] (2) The external air is introduced into the dehumidifier by the induced draft fan, and then enters the heat pump after being dehumidified by the dehumidifier, so that the heating efficiency of the heat pump is effectively improved.

[0019] (3) The first air supply pipe of the dehumidifier treatment air outlet can pass the dehumidified external air from the first partition plate to the filter screen to remove impurities; the second air supply pipe of the dehumidifier regeneration air outlet can pass the dehumidified hot air recycled from the material drying area from the first partition plate to the filter screen to remove impurities. The airflow after filtration and dust removal enters the heat pump through the second partition plate at the air inlet end of the heat pump, which is conducive to the efficient operation of the heat pump.

[0020] (4) When the humidity of the material drying area is too high, the air with too high humidity can be directly discharged by the dehumidification fan, so that the humidity does not affect the drying efficiency and product quality.

[0021] (5) The fan generates airflow by rotating the fan blades, which can effectively push the hot air to the material drying area. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the utility model, and should not be regarded as limiting the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0023] Fig. 1 It is a partial sectional structure schematic view of the heat pump drying device in embodiment 1.

[0024] Fig. 2 Front view of the heat pump drying device in Example 1;

[0025] Fig. 3 Electric connection relationship diagram of the heat pump drying device in Example 1.

[0026] The figure shows: 1-box, 1a-equipment placement area, 1b-material drying area, 1c-air inlet, 1d-air outlet, 2-side plate, 2a-air supply port, 2b-return air port, 3-heat pump, 31-air inlet pipe, 4-dehumidifier, 41-first air supply pipe, 42-second air supply pipe, 5-induced draft fan, 51-air outlet pipe, 6-first partition, 7-second partition, 8-filter screen, 9-electric control box, 10-control system, 11-dehumidification fan, 12-temperature and humidity sensor, 13-fan, 14-placement screen, 15-box door, 16-equipment maintenance door, 17-handle, 18-power supply. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor are within the scope of protection of the present application.

[0029] It should be noted that: similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0030] Example 1

[0031] As Figs. 1 to 3As shown, the embodiment provides a heat pump drying device, which comprises a box body 1 internally provided with a side plate 2, the side plate 2 separates the inner cavity of the box body 1 into a device placing area 1a and a material drying area 1b; the side plate 2 is provided with an air supply port 2a near the bottom, and is provided with an air return port 2b near the top; the device placing area 1a is provided with a heat pump 3 and a dehumidifier 4, and is horizontally provided with a partition plate. The heat pump 3 is arranged below the partition plate, and the dehumidifier 4 is arranged above the partition plate, the inlet end of the dehumidifier 4 faces the air return port 2b, and the outlet end of the dehumidifier 4 is communicated with the inlet end of the heat pump 3 through a pipeline.

[0032] The hot air generated by the heat pump 3 enters the material drying area 1b from the air supply port 2a, and during drying, the moisture in the material is evaporated and released into the air along with the flow of hot air, resulting in a gradual decrease in the humidity of the material, while the hot air will absorb the moisture in the material, resulting in a gradual increase in the humidity of the hot air. The hot air with increased humidity in the material drying area 1b enters the dehumidifier 4 through the air return port 2b, is dehumidified, and then enters the heat pump 3 for recycling, and the partition plate can separate the hot air with high humidity, thereby avoiding the influence of excessive humidity on the heating efficiency of the heat pump 3. The device has good dehumidification effect, high heating efficiency, and can effectively guarantee the drying efficiency and product quality.

[0033] In the embodiment, the air inlet 1c opened at the top of the box body 1 is arranged vertically above the device placing area 1a; further comprising an air inducer 5 arranged at the air inlet 1c, the air outlet pipe 51 of the air inducer 5 penetrates into the device placing area 1a from the air inlet 1c, and the air outlet pipe 51 of the air inducer 5 is communicated with another inlet end of the dehumidifier 4. The air inducer 5 can introduce external air to the dehumidifier 4, and the external air is dehumidified by the dehumidifier 4 and then introduced into the heat pump 3, which can effectively improve the heating efficiency of the heat pump 3.

[0034] In the embodiment, the partition plate is two, including a first partition plate 6 and a second partition plate 7, and a filter screen 8 horizontally arranged in the device placing area 1a is arranged between the first partition plate 6 and the second partition plate 7; the outlet end of the dehumidifier 4 is two, including a treatment air outlet and a regeneration air outlet, a first air supply pipe 41 of the treatment air outlet, and a second air supply pipe 42 of the regeneration air outlet, which are away from the dehumidifier 4, penetrate through the first partition plate 6, and an air inlet pipe 31 of the heat pump 3, which is away from the heat pump 3, penetrates through the second partition plate 7.

[0035] The presence of more impurities in the air can affect the heat exchange efficiency, especially the heat gas recovered in the material drying area 1b can carry more impurities. The first air supply pipe 41 of the air outlet treated by the dehumidifier 4 can pass the dehumidified external air from the first partition 6 into the filter screen 8 to remove impurities; the second air supply pipe 42 of the air outlet regenerated by the dehumidifier 4 can pass the dehumidified heat gas recovered in the material drying area 1b from the first partition 6 into the filter screen 8 to remove impurities. The airflow filtered and dedusted is then introduced into the heat pump 3 through the second partition 7 at the air inlet end of the heat pump 3, which is conducive to the efficient operation of the heat pump 3.

[0036] In this embodiment, the outer wall surface of the box body 1 is provided with an electric control box 9, and the electric control box 9 is provided with a control system 10. The control system 10 is electrically connected with the heat pump 3, the dehumidifier 4 and the induced draft fan 5 respectively. The start-stop and working state of the heat pump 3, the dehumidifier 4 and the induced draft fan 5 are controlled by the control system 10. The control system 10 includes a controller and a signal processor. The controller can be selected from 8051 series single-chip microcomputer, STM32 series single-chip microcomputer, FPGA programmable controller, etc. The signal processor can be selected from ADSP-21469BBCZ-3 digital signal processor, etc. A power supply 18 is also configured, which is electrically connected with the controller and the signal processor of the control system 10, the heat pump 3, the dehumidifier 4 and the induced draft fan 5. The power supply 18 can adopt a common mobile power supply 18 on the market.

[0037] In this embodiment, the heat pump 3 is an air source heat pump 3, and the dehumidifier 4 is a rotary dehumidifier. The main components of the air source heat pump 3 include an evaporator, a compressor, a condenser and an expansion valve. The air source heat pump 3 is a mature technology, which can continuously absorb the heat of external air and transfer it to the material drying area 1b until the preset temperature is reached. Here, it will not be described in detail. For example, the air source heat pump 3 can be produced and sold by Tianjin Ronghe Shengda Energy-saving and Environmental Protection Technology Co., Ltd.

[0038] The main components of the rotary dehumidifier include a machine body, air inlets and outlets, a rotary wheel and a driving device. The rotary dehumidifier can be a rotary dehumidifier of Prue Tai, Siemens and the like. The rotary dehumidifier has four air inlets, which are a fresh air inlet, a treated air outlet, a regeneration air inlet 1c and a regeneration air outlet. The fresh air inlet is communicated with the air outlet pipe 51 of the induced draft fan 5; the regeneration air inlet 1c faces the return air inlet 2b.

[0039] In this embodiment, the air outlet 1d opened at the top of the box body 1 is arranged vertically above the material drying area 1b; and a dehumidification fan 11 arranged at the air outlet 1d is further included. As the drying process proceeds, the water content in the hot air will increase, and the humidity will gradually rise. When the humidity of the material drying area 1b is too high, the air with too high humidity can be directly discharged through the dehumidification fan 11, so as to avoid that the too high humidity affects the drying efficiency and product quality.

[0040] In the embodiment, the temperature and humidity sensor 12 is arranged on the inner side wall of the box body 1, and is arranged in the material drying area 1b and electrically connected with the control system 10.

[0041] The temperature and humidity sensor 12 can be used to conveniently and timely observe the temperature and humidity of the material drying area 1b. When the temperature and humidity sensor 12 detects that the humidity in the material drying area 1b reaches a preset higher level, the control system 10 controls the dehumidifying fan 11 to start, and when the temperature and humidity sensor 12 detects that the humidity in the material drying area 1b is lower than a preset humidity, the dehumidifying fan 11 is turned off.

[0042] In the embodiment, the fan 13 is arranged on the side plate 2 and at the air supply opening 2a, and is electrically connected with the control system 10. The fan 13 can generate air flow through rotating fan blades, and can effectively push hot air to the material drying area 1b.

[0043] In the embodiment, the multiple placing net plates 14 horizontally arranged in the material drying area 1b are arranged in a vertical direction. The placing net plates 14 are used to place materials to be dried.

[0044] In the embodiment, the box body 1 is further hinged with a box door 15 used to open or close the material drying area 1b. The side wall of the box body 1, near the equipment placing area 1a, is further provided with an equipment maintenance door 16 used to facilitate equipment maintenance. The box door 15 and the equipment maintenance door 16 are both provided with handles 17.

[0045] The above is only the preferred embodiment of the present application, and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A heat pump type drying device, characterized by, Includes a housing (1), and a side panel (2) is provided inside the housing (1). The side panel (2) divides the inner cavity of the housing (1) into an equipment placement area (1a) and a material drying area (1b). The side panel (2) has an air supply vent (2a) near the bottom and an air return vent (2b) near the top. The equipment placement area (1a) is equipped with a heat pump (3) and a dehumidifier (4). The equipment placement area (1a) is horizontally supported by a partition. The heat pump (3) is located below the partition, and the dehumidifier (4) is located above the partition. The inlet end of the dehumidifier (4) faces the return air vent (2b), and the outlet end of the dehumidifier (4) is connected to the inlet end of the heat pump (3) through a pipe.

2. Heat pump (3) dryer according to claim 1, characterized in that The top of the housing (1) is provided with an air inlet (1c), which is located vertically above the equipment placement area (1a); It also includes an exhaust fan (5), which is located at the air inlet (1c). The exhaust pipe (51) of the exhaust fan (5) passes through the air inlet (1c) into the equipment placement area (1a), and the exhaust pipe (51) of the exhaust fan (5) is connected to the other inlet end of the dehumidifier (4).

3. The heat pump (3) type drying device according to claim 2, characterized in that, The partition consists of two parts, including a first partition (6) and a second partition (7). The equipment placement area (1a) is also horizontally equipped with a filter screen (8), which is located between the first partition (6) and the second partition (7). The dehumidifier (4) has two outlets, including a treatment air outlet and a regeneration air outlet. The first air supply pipe (41) of the treatment air outlet and the second air supply pipe (42) of the regeneration air outlet both pass through the first partition (6) at the end away from the dehumidifier (4). The air inlet pipe (31) of the heat pump (3) passes through the second partition (7) at the end away from the heat pump (3).

4. The heat pump (3) type drying device according to claim 3, characterized in that, An electrical control box (9) is provided on the outer wall of the housing (1), and a control system (10) is provided inside the electrical control box (9). The control system (10) is electrically connected to the heat pump (3), the dehumidifier (4), and the induced draft fan (5).

5. The heat pump (3) type drying device according to claim 4, characterized in that, The heat pump (3) is an air source heat pump (3), and the dehumidifier (4) is a rotary dehumidifier.

6. The heat pump (3) type drying device according to claim 4, characterized in that, The top of the box (1) is provided with an exhaust vent (1d), which is located vertically above the material drying area (1b). It also includes a dehumidifying fan (11), which is located at the exhaust port (1d).

7. The heat pump (3) type drying device according to claim 6, characterized in that, It also includes a temperature and humidity sensor (12), which is disposed on the inner side wall of the box (1) and in the material drying area (1b). The temperature and humidity sensor (12) is electrically connected to the control system (10).

8. The heat pump (3) type drying device according to any one of claims 4 to 7, characterized in that, It also includes a fan (13), which is mounted on the side plate (2) and is located at the air outlet (2a). The fan (13) is electrically connected to the control system (10).

9. The heat pump (3) type drying device according to claim 1, characterized in that, Multiple placement screens (14) are horizontally mounted in the material drying zone (1b), and the multiple placement screens (14) are spaced apart in the vertical direction.

10. The heat pump (3) type drying device according to claim 1, characterized in that, The box body (1) is also hinged with a box door (15), which is used to open or close the material drying area (1b). The side wall of the box body (1) is also provided with an equipment maintenance door (16), which is located on the side near the equipment placement area (1a). Both the box door (15) and the equipment maintenance door (16) are provided with handles (17).

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