CN107883679A - A kind of novel integrated heat pump dryer - Google Patents

Abstract

The invention discloses a novel integrated heat pump dryer, which includes a unit. The middle of the lower part of the unit is a heating chamber, and a circulating fan and a condenser are respectively arranged in the heating chamber. The left and right sides of the heating chamber are to be dried. Dry material storage space, compressor and evaporator are respectively arranged in the upper part of the unit where the heat pump host is placed, and a heat recovery part is also provided on the upper part of the unit, and the heat recovery part includes a sensible heat exchanger. The top is also equipped with an economizer and a gas-liquid separator, and the air duct of the unit is a downward-supply-upward-return air supply mode. The air duct of the invention is unobstructed, the energy efficiency of the system is high, heat waste is avoided, the installation and maintenance are easy, and the occupied space is small.

Description

A new type of integrated heat pump dryer

technical field

The invention relates to the field of heat pump drying, in particular to a novel integrated heat pump drying machine.

Background technique

The heat pump dryer is a heat raising device. The high-temperature heat pump dryer unit uses the reverse Carnot principle to absorb heat from the surrounding environment and transfer it to the heated object (higher temperature object). It is mainly used in food , drying and dehydration process of medicinal materials, wood, agricultural and sideline products, industrial products, etc. The existing technology has the following disadvantages: the heat pump and the drying room are designed separately, the split design and installation are complicated, and the unit occupies a large area; most of the current dehumidification methods for heat pump drying are to add a strong outlet in the drying room to increase the dehumidification capacity. Poor, long drying time; the heat pump dryer currently uses an open circulation system, when the ambient temperature drops, the capacity of the unit attenuates greatly, and the heat required for drying increases, resulting in longer drying time; heat pump drying Although the closed circulation system currently used by the machine is not affected by the ambient temperature, the dehumidification capacity of the unit is determined by the cooling capacity of the unit. Compared with the open circulation system, the dehumidification capacity is worse, the drying time is longer, and the drying The temperature of the room is mainly maintained by electric heating, which consumes a lot of energy; heat pump drying wastes a lot of energy, and the utilization rate is low. At present, there are many ways to use boilers for drying in the industry. However, the pollution is large, and heat pumps are urgently needed for transformation. However, heat pump drying transformation boilers require many units, occupy a large area, and the transformation is complicated. It needs to connect a large amount of copper pipes and refrigerants. To a certain extent, it has affected the promotion of alternatives to heat pumps. At present, the design of the heat pump drying room in the industry is complicated, there are few materials placed, the demand for fans is large, and the installation is complicated. It often takes a long period from the purchase of a heat pump to the completion of the drying room.

Contents of the invention

The purpose of the present invention is to provide a novel integrated heat pump dryer to solve the problems raised in the above-mentioned background technology.

To achieve the above object, the present invention provides the following technical solutions:

A new type of integrated heat pump dryer, including a unit, the middle of the lower part of the unit is a heating chamber, the heating chamber is respectively equipped with a circulating fan and a condenser, and the left and right sides of the heating chamber are the storage space for the materials to be dried A compressor and an evaporator are respectively provided in the upper part of the unit where the heat pump host is placed, and a heat recovery part is provided on the upper part of the unit, and the heat recovery part includes a sensible heat exchanger, and the top of the unit is also provided with There is an economizer and a gas-liquid separator. The air duct of the unit is a downward-supply-upward-return air supply mode, that is, fresh air at normal temperature is heated up into medium-temperature air through a sensible heat exchanger, and then heated up into high-temperature air through a condenser, and the high-temperature air passes through The space where the materials to be dried is cooled down to medium-temperature air, and then the sensible heat is transferred to the fresh air through the sensible heat exchanger, and then the heat in the return air is absorbed by the evaporator and then discharged.

As a further solution of the present invention: the air duct of the unit is provided with a manual baffle for controlling the smoothness of the air duct. The manual baffle can be pushed and pulled from the outside of the door. When pulled outward, the air duct is opened; when pushed inward, The air duct is closed.

As a further solution of the present invention: a deflector is arranged in the middle of the bottom of the unit.

As a further solution of the present invention: the unit is designed as a unitary assembly structure, and when it is a plurality of units, they are placed side by side closely and in parallel.

As a further solution of the present invention: the evaporator is installed at the rear of the sensible heat exchanger.

Compared with the prior art, the beneficial effects of the present invention are: the unit adopts the direct heating type all-new air mode, which greatly increases the dehumidification effect and reduces the drying time; Unobstructed, no need for multiple fans to match; the distance between the copper pipes connected to the system is short, and the system has high energy efficiency; the sensible heat exchanger initially recovers heat, the evaporator is at the rear of the sensible heat exchanger, and the evaporator recovers heat for the second time. The unit can operate with high energy efficiency even at low temperatures, and waste heat is also used to reduce the energy consumption of the unit; the integrated design of the heat pump drying room does not need to connect copper pipes or vacuum during installation, and the installation is very convenient; the installation of the unit takes up little space. It is completely embedded in the drying room, which reduces the footprint of the unit; the compressor, condenser and evaporator are installed separately as parts, and the maintenance and replacement of parts is simple and convenient.

Description of drawings

Fig. 1 is the front view of the present invention.

Fig. 2 is a top view of the present invention.

Fig. 3 is a schematic diagram of the air duct of the present invention.

In the figure: 1-compressor, 2-evaporator, 3-sensible heat exchanger, 4-circulation fan, 5-condenser, 6-economizer, 7-gas-liquid separator, 8-heat pump host placement area, 9-heat recovery part, 10-heating chamber, 11-placement space for materials to be dried, 12-deflector, 13-manual baffle.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Please refer to Figures 1 to 3. In the embodiment of the present invention, a new type of integrated heat pump dryer includes a unit. The middle of the lower part of the unit is a heating chamber 10, and the heating chamber 10 is respectively equipped with a circulating fan 4 and a condenser. 5. The left and right sides of the heating chamber 10 are the storage space 11 for the materials to be dried. The compressor 1 and the evaporator 2 are respectively arranged in the upper part of the unit where the heat pump host is placed. The upper part of the unit is also equipped with The heat recovery part 9, the heat recovery part 9 includes a sensible heat exchanger 3, and the top of the unit is also equipped with an economizer 6 and a gas-liquid separator 7, and the air duct of the unit is a bottom-supply and top-return air supply mode Specifically, fresh air at normal temperature is heated up into medium-temperature air through sensible heat exchanger 3, and then heated up into high-temperature air through condenser 5. 3 Transfer the sensible heat to the fresh air, then absorb the heat in the return air through the evaporator 2 and discharge it.

In this embodiment, the air duct of the unit is provided with a manual baffle 13 for controlling the smoothness of the air duct. The manual baffle 13 can be pushed and pulled from the outside of the door. When pulled outward, the air duct is opened; when pushed inward, the air duct is opened. The air duct is closed, which is convenient for customers to open the drying room door and work without being affected by hot air.

In this embodiment, a deflector 12 is arranged in the middle of the bottom of the unit to make the air passage more smooth.

In this embodiment, the unit is designed as a unit assembly structure, which can be configured in a modular manner according to customer needs. If multiple units are required, they can be placed side by side closely and in parallel, saving the space occupied by the unit.

In this embodiment, the evaporator 2 is installed at the rear of the sensible heat exchanger 3 .

After starting up, the circulating fan 4 is turned on, and after a short time, the compressor 1 is turned on, and the heat pump system starts to work; the dry normal-temperature fresh air passes through the sensible heat exchanger 3 to become dry medium-temperature air, and then passes through the condenser 5 to become dry The dry hot air passes through the material to be dried, takes away the moisture in the material, and becomes humid medium-temperature air, and then passes through the sensible heat exchanger 3, transferring a large amount of sensible heat to the fresh air, and then becomes close to normal temperature The humid gas passes through the evaporator 2, and the evaporator 2 absorbs the heat in the return air, and then the return air becomes dry air at room temperature and then discharged; in this way, the material is finally dried.

The unit adopts the direct heating fresh air method, which greatly increases the dehumidification effect and reduces the drying time; the unique down-supply and top-return air supply mode, the air duct is smooth, and there is no need for multiple fans; the distance between the copper pipes connected to the system is short , the system has high energy efficiency; sensible heat exchanger 3 initially recovers heat, evaporator 2 is at the rear of sensible heat exchanger 3, and evaporator 2 recovers heat for the second time. This design enables the unit to operate with high energy efficiency even at low temperatures. Waste heat is also used to reduce the energy consumption of the unit; the integrated design of the heat pump drying room does not need to connect copper pipes or vacuum during installation, and the installation is very convenient; the installation of the unit occupies a small space and is completely embedded in the drying room, reducing The unit occupies an area; the compressor 1, the condenser 5 and the evaporator 2 are installed separately as parts, and the maintenance and replacement of parts is simple and convenient.

The above are only preferred embodiments of the present invention, and it should be pointed out that for those skilled in the art, some modifications and improvements can be made without departing from the concept of the present invention, and these should also be regarded as protection of the present invention. None of these will affect the effect of implementing the present invention and the practicability of the patent.

Claims (5)

1. a kind of novel integrated heat pump dryer, including unit, it is characterised in that be heating chamber among the bottom of the unit （10）, heating chamber（10）Inside it is respectively equipped with circulating fan（4）And condenser（5）, the heating chamber（10）The left and right sides to treat Material drying placement space（11）, the top heat pump main frame placement region of the unit（8）Inside it is respectively equipped with compressor（1）And steaming Send out device（2）, the top of the unit is additionally provided with heat recovery section（9）, heat recovery section（9）Including sensible heat exchanger（3）, it is described Economizer is further respectively had at the top of unit（6）And gas-liquid separator（7）, formula air-supply side is served go back in the air channel of the unit under being Formula, i.e. normal temperature fresh air is through sensible heat exchanger（3）Heat up into middle warm air, then condensed device（5）High temperature air is heated up into, high temperature is empty Gas passes through material placement space to be dried（11）Cool for middle warm air, then through sensible heat exchanger（3）Sensible heat is transmitted to fresh air, after Through evaporator（2）Discharged after absorbing the heat in return air.

2. novel integrated heat pump dryer according to claim 1, it is characterised in that be provided with the air channel of the unit For controlling the unobstructed manual baffle plate in air channel（13）, manual baffle plate（13）Can be from push-and-pull before and after progress outdoors, when being pulled outwardly, wind Open in road；When pushing inward, air channel is closed.

3. novel integrated heat pump dryer according to claim 1 or 2, it is characterised in that in the bottom of the unit Between be provided with deflector（12）.

4. novel integrated heat pump dryer according to claim 1, it is characterised in that the unit is modular assembly Structure design, when being multiple units, laid parallel is adjacent to side by side.

5. novel integrated heat pump dryer according to claim 1, it is characterised in that the evaporator（2）It is arranged on Sensible heat exchanger（3）Rear portion.