CN201297735Y - Ventilation device with heat recovery function - Google Patents

Abstract

A ventilation device with heat recovery function, including a casing, a fan and its air inlet and outlet, a heat exchange core is arranged in the center of the casing, an indoor air inlet, an air outlet, and an outdoor air inlet and outlet The tuyeres communicate with the heat exchange core body respectively, forming indoor air passages and outdoor air passages in a state of countercurrent to each other. The heat exchanging core is arranged obliquely, and the indoor air passages and the outdoor air passages are arranged alternately. The ventilation channel of the heat exchange core of the utility model adopts a counterflow structure design, and the heat exchange time of the air in the module is greatly prolonged, so the heat exchange is more sufficient, and the recovery efficiency is greatly improved. The ventilation channel adopts a lattice structure, which increases the heat exchange area. The heat exchange core is a nano-microporous heat exchange membrane made of polymer materials, which has good heat conduction and moisture permeability, good air tightness and safety, and heat recovery does not pollute the fresh air. The non-linear channel structure design improves the heat exchange rate between the air and the channel wall.

Description

Ventilator with heat recovery

technical field

The utility model relates to a ventilation device with heat recovery function.

Background technique

With the continuous development of industry, environmental pollution is becoming more and more serious, and energy supply is becoming more and more tense. Environmental protection and energy saving have become the focus of people's attention. Facing the deteriorating living environment, people have come up with various methods to To overcome the harm brought to people by environmental degradation, many environmental protection and energy-saving products have emerged as the times require, and the ventilation device with heat recovery function is one of them. While adjusting the air conditions in people's lives and industrial places, this ventilation device can fully recycle the heat contained in the air exhausted to the outside, so as to reduce energy consumption as much as possible while ventilating. To achieve the purpose of environmental protection and energy saving.

At present, there are some ventilation devices with heat recovery function on the market. Most of them use a heat conduction plate to place between the exhaust pipe and the intake pipe, and separate the two, so that the indoor air can be realized while exchanging air. Heat exchange with outside air. Since the heat conduction plate is used for heat exchange, the design of the air inlet channel and the air outlet channel adopts the cross flow method, as shown in Figure 1, the time of air in the heat exchange module is short, so the gas cannot perform sufficient heat exchange, and the heat exchange effect Poor, there is still a large energy loss, it is necessary to further improve and perfect.

Utility model content

The purpose of the utility model is to provide a ventilation device with heat recovery function with simple and reasonable structure, reliable operation and high heat recovery efficiency, so as to overcome the deficiencies in the prior art.

A ventilation device with heat recovery function designed for this purpose, including a casing, a fan and its air inlet, and air outlet. Its structural feature is that a heat exchange core is arranged in the center of the casing, and the indoor air inlet, The air outlet, the outdoor air inlet, and the air outlet communicate with the heat exchange core respectively, forming indoor air passages and outdoor air passages in a countercurrent state.

Air inlets and air outlets are respectively arranged on both sides of the casing, the heat exchange core is arranged obliquely, and the indoor air passages and outdoor air passages are arranged alternately. The inclination angle of the heat exchange core is 40°-60°. The heat exchange core is a nano-microporous heat exchange membrane made of polymer material. Its ventilation channel is a grid structure. The indoor air passage and the outdoor air passage are non-linear passages; or broken line passages.

The casing and the heat exchange core are provided with upper, lower and left and right air passage partitions to form indoor air passages and outdoor air passages; fans are respectively arranged on the outdoor sides of the indoor air passages and outdoor air passages; the electric control box is located at outside of the enclosure.

The ventilation channel of the heat exchange core of the utility model adopts an advanced counterflow structure design, and the heat exchange time of the air in the module is greatly extended, so the heat exchange is more sufficient and the recovery efficiency is greatly improved. The ventilation channel adopts a lattice structure, which increases the heat exchange area. The heat exchange core is a nano-microporous heat exchange membrane made of polymer materials, which has good heat conduction and moisture permeability, good air tightness and safety, and heat recovery does not pollute the fresh air. The air blower and the electric control box are all located on the outside of the outdoor, so the utility model can be used under the condition that the ambient temperature is relatively high. The non-linear channel structure design can also improve the heat exchange rate between the air and the channel wall.

Description of drawings

Fig. 1 is a schematic diagram of the flow of air in the body when the existing ventilation device is in operation.

Fig. 2 is a schematic diagram of the air flow of the utility model during operation.

Fig. 3 is a schematic structural diagram of an embodiment of the present invention.

Detailed ways

Referring to Fig. 2 and Fig. 3, the ventilation device with heat recovery function includes a casing 7, and an air inlet and an air outlet are arranged on both sides of the casing, and the air inlet and the air outlet on both sides are arranged symmetrically, each Each air outlet and inlet air are equipped with air duct connectors. All be provided with blower fan 5 at 8 places of indoor air air outlet and 10 places of outdoor air inlet, two blower fans are separated by right air duct dividing plate 9. A heat exchange core 3 is provided at the center of the casing 7, and the heat exchange core is fixed on the support frame 11 with an inclination of 45 degrees. Inside the casing, there are four air duct partitions, i.e. upper air duct partitions. 12. The lower air channel partition 4, the left air channel partition 2 and the right air channel partition 9, the four air channel partitions and the casing and the heat exchange core are between the air inlet on one side and the air outlet on the other side Two air passages are formed between them, the indoor air passage and the outdoor air passage. An air filter is provided between the air inlet of each air channel and the heat exchange core 3, and a sealing material is provided between the air channel partition and the casing to ensure that the two air channels are not communicated with each other, so that in the delivery Under the action of the fan, the air enters the casing from the air inlet on one side, and is discharged from the air outlet on the other side after passing through an air channel of the heat exchange core 3, so that the air from the room and the air from the outside are two airflows. When the countercurrents meet, the flow direction of the two airflows is shown in Figure 2. Because there is a humidity difference and a water vapor pressure difference in the airflow on both sides of the casing 7, the two airflows simultaneously exhibit heat and mass transfer phenomena for heat exchange. The air enters the room, and the original indoor air is exhausted outside.

In order to improve the heat exchange rate, the air intake channel of the outdoor air channel and the air outlet channel of the indoor air channel are preferably non-linear channels. The outdoor side of the casing is provided with an electric control box 6, and the air blower 5 is all arranged at the position near the outdoor side, so that the utility model can be used in a higher temperature environment.

Claims (7)

1. A ventilation device with heat recovery function, comprising a casing (7), a blower fan (5) and an air inlet and an air outlet thereof, characterized in that a heat exchange core (3) is arranged in the center of the casing, The indoor air inlet (13), the air outlet (8) and the outdoor air inlet (10), the air outlet (1) communicate with the heat exchange core respectively to form an indoor air channel and an outdoor air channel in countercurrent state. 2. The ventilation device with heat recovery function according to claim 1, characterized in that the two sides of the casing are respectively provided with air inlets and air outlets, the heat exchange core is arranged obliquely, and the indoor air passages and outdoor air passages are staggered set up. 3. The ventilation device with heat recovery function according to claim 2, characterized in that the inclination angle of the heat exchange core is 40°-60°. 4. The ventilation device with heat recovery function according to claim 1, characterized in that the heat exchange core is a nano-microporous heat exchange membrane made of polymer material. 5. The ventilation device with heat recovery function according to claim 1, characterized in that the ventilation channels of the heat exchange core are in a lattice structure. 6. The ventilation device with heat recovery function according to claim 1 or 2, characterized in that the indoor air passage and the outdoor air passage are non-linear passages; or zigzag passages. 7. The ventilation device with heat recovery function according to claim 6, characterized in that the upper and lower and left and right air duct partitions (12), (4), (2 ), (9) to form an indoor air passage and an outdoor air passage; fans are respectively arranged on the outdoor sides of the indoor air passage and the outdoor air passage; the electric control box (6) is located outside the casing room.

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