CN100434819C - Ventilator - Google Patents

Abstract

The invention discloses a ventilation device, which comprises a shell, an air supply device, a heat exchanger, a flow constant flow device, an outdoor air flow guide and an indoor air flow guide. One side of the shell forms an outdoor air suction hole and an indoor air intake hole. The air discharge hole is formed on the opposite side of the outdoor air discharge hole and the indoor air suction hole. The space inside the shell where the outdoor air or indoor air is discharged from the heat exchanger is provided with a flow constant flow device, and the outdoor air or indoor air passing through the heat exchanger It is converted into laminar flow, and the flow constant flow device is arranged at the end of the indoor air flow guide near the heat exchanger or the end of the outdoor air flow guide, so that the ventilation device of the present invention improves the air supply efficiency and makes the outdoor air or indoor Air flows evenly throughout the heat exchanger to increase heat exchange efficiency.

Description

Ventilator

technical field

The present invention relates to a ventilating device, in particular to a ventilating device in which outdoor air and indoor air become laminar flow after passing through a heat exchanger for heat exchange to improve air supply efficiency and heat exchange efficiency . The above-mentioned ventilation device sucks the outdoor air into the room and discharges the indoor air to the outside, so that heat exchange is performed between the indoor air and the outdoor air, and the air in the indoor space is ventilated to maintain a comfortable environment.

Background technique

Typically, the air in an enclosed space has an elevated carbon dioxide content over time due to the respiration of living organisms. When the carbon dioxide content increases, the breathing of the living body will be uncomfortable, so the ventilation device is often used in narrow spaces with many people such as offices and vehicles to replace indoor polluted air with fresh outdoor air. This ventilation device has a blower that blows indoor air and outdoor air forcibly, and the polluted indoor air is discharged to the outside by the blower, and fresh outdoor air is sucked into the room at the same time. However, when indoor cooling and ventilation are carried out at the same time, as the cooled indoor air is discharged and outdoor hot air is sucked in, the temperature of the indoor air rises compared with the cooling temperature, and the cooling efficiency decreases. When indoor heating and ventilation are carried out at the same time, as the heated indoor air is exhausted and outdoor cold air is sucked in, the temperature of the indoor air drops compared with the heating temperature, and the heating efficiency decreases.

The ventilation device is also provided with a heat exchanger for heat exchange between indoor air and outdoor air. 1 and 2 show a perspective view and a cross-sectional view of a ventilator according to the prior art.

Specifically, as shown in FIGS. 1 and 2 , in the conventional ventilator registered in Japanese Patent Laid-Open Publication No. 09-137984, an outdoor air suction hole 4a for sucking in outdoor air is formed on one side of a rectangular housing 2. and the indoor air discharge hole 6b for discharging indoor air; the other side of the casing 2 forms the outdoor air discharge hole 4b for discharging outdoor air and the indoor air suction hole 6a for sucking in indoor air; the center of the casing 2 is provided with a heat exchanger 8, so A flow path for outdoor air and indoor air flows is formed in the heat exchanger 8; an air suction fan 10 for sucking in outdoor air and an exhaust fan 20 for exhausting indoor air are respectively arranged in the center of both sides of the casing 2. In addition, space barriers 7a, 7b and air ducts (duct) 9a, 9b forming air passages are also provided inside the housing 2 . The above-mentioned space barriers 7a, 7b guide the outdoor air sucked from the outdoor air suction hole 4a to the heat exchanger 8 or guide the indoor air sucked from the indoor air suction hole 6a to the heat exchanger 8; The outdoor air passing through the heat exchanger 8 is discharged to the outdoor air discharge hole 4b or the indoor air passing through the heat exchanger 8 is discharged to the indoor air discharge hole 6b. The above-mentioned heat exchanger 8 is detachably arranged in the casing 2 through an inspection opening 2 a formed on the central side of the casing 2 . And the corners of the heat exchanger 8 are slidably inserted into rails 5 formed on both ends of the space barriers 7a, 7b and on and below the air ducts 9a, 9b. In order to improve heat exchange efficiency, a plurality of heat exchangers 8 may be installed in parallel along the longitudinal direction. Above-mentioned suction fan 10 and exhaust fan 20 are arranged on the insides of the fan mounting brackets 12, 22 respectively connected to the air ducts 9a, 9b, and the suction fan 10 and the exhaust fan 20 all adopt the method of sucking outdoor air along the axial direction or A squirrel cage fan (sirocco fan) that discharges the indoor air along the radial direction. The motors 14 , 24 for respectively driving the suction fan 10 and the exhaust fan 20 are fixed on the respective fan mounting frames 12 , 22 . Furthermore, the motor 14 for driving the suction fan 10 and the motor 24 for driving the exhaust fan 20 are provided toward the center of both sides of the heat exchanger 8 .

But according to the ventilation device of the prior art, the outdoor air or indoor air passing through the heat exchanger 8 directly passes through the suction fan or the exhaust fan 20, so that the air is set at the partial flow speed of the suction fan 10 or the exhaust fan 20. Sudden acceleration leads to turbulent flow, which results in flow resistance and flow loss, thereby reducing the air supply efficiency. In addition, according to the ventilation device of the prior art, the suction fan 10 or the exhaust fan 20 are due to being arranged at the central part of the heat exchanger 8, and the air flows uniformly in front of the heat exchanger 8, while the A large pressure difference is generated between one side and the other side at a position close to the suction fan 10 or exhaust fan 20, and a small pressure difference is generated at a position far from the suction fan 10 or exhaust fan 20 , so that a high-speed air flow is formed near the suction fan 10 or the exhaust fan 20 in the heat exchanger 8, so that most of the air is only in the heat exchanger 8 near the suction fan 10 or the exhaust fan 20 Heat exchange occurs on the surface, thereby reducing the heat exchange efficiency.

Contents of the invention

In order to solve the above-mentioned technical problems, the object of the present invention is to provide a ventilator capable of reducing the turbulent flow of outdoor air or indoor air passing through the heat exchanger and at the same time making the outdoor air or indoor air flow uniformly throughout the heat exchanger. .

The technical solution adopted by the present invention to solve its technical problems is:

A ventilation device includes a casing, an air supply device, a heat exchanger, and a flow constant flow device. A pair of suction holes for inhaling outdoor air or indoor air and a pair of outlet holes for discharging outdoor air or indoor air are formed on the casing; air supply devices are respectively arranged inside the pair of outlet holes to blow outdoor air or indoor air; The exchanger is arranged across the inside of the shell to perform heat exchange between the outdoor air and the indoor air; one side of the shell of the ventilation device forms the outdoor air suction hole and the indoor air discharge hole, and the opposite side forms the outdoor air discharge hole and the indoor air. The suction hole, the ventilation device also includes an outdoor air flow guide and an indoor air flow guide. The outdoor air flow guide guides the outdoor air flowing into the outdoor air suction hole to the direction of the heat exchanger while passing through the heat exchanger. The indoor air is guided to the direction of the indoor air discharge hole, and the indoor air flow guide guides the indoor air flowing into the indoor air suction hole to the direction of the heat exchanger, and at the same time guides the outdoor air passing through the heat exchanger to the direction of the outdoor air discharge hole. The flow constant flow device is arranged inside the shell in the space where the outdoor air or indoor air is discharged from the heat exchanger, and the outdoor air or indoor air passing through the heat exchanger is transformed into a laminar flow, and the flow constant flow device is arranged near the heat exchanger. The end of the indoor air flow guide or the end of the outdoor air flow guide of the device, and the flow constant flow device is arranged parallel to one side of the shell, the flow constant flow device is a grid formed by several channels with a certain thickness or A plurality of horizontal louvers arranged at a certain distance in the vertical direction or a plurality of vertical louvers arranged at a certain distance in the horizontal direction can be rotated to open and close the space for discharging outdoor air or indoor air from the heat exchanger.

The ventilator of the present invention is equipped with flow constant flow devices such as grilles, horizontal louvers, and vertical louvers inside the shell, so that the air passing through the heat exchanger is transformed into laminar flow when passing through these flow constant flow devices, preventing the flow caused by turbulent flow. The flow resistance and flow loss are small, and the air supply efficiency is improved. In addition, in the ventilator of the present invention, the flow constant flow devices such as the grille with a certain thickness of the channel and the guide air flow with a certain thickness such as horizontal louvers and vertical louvers are arranged between the heat exchanger and the fan. The pressure difference between the front and rear ends of the flow device makes the air flow uniformly in front of the flow constant flow device, and the air also flows uniformly throughout the heat exchanger, thereby improving the heat exchange efficiency.

Description of drawings

Fig. 1 is a three-dimensional schematic diagram of a ventilation device according to the prior art;

Fig. 2 is a schematic sectional view of a ventilation device according to the prior art;

Fig. 3 is the three-dimensional schematic view of the ventilation device according to the present invention;

Fig. 4 is a schematic plan view of the ventilation device according to the present invention;

Fig. 5 is a three-dimensional schematic diagram of another embodiment of the constant flow device of the ventilation device according to the present invention;

Fig. 6 is a schematic sectional view along line A-A in Fig. 4;

FIG. 7 is a schematic cross-sectional view along line B-B in FIG. 4 .

Explanation of reference signs of main components

32: Shell 42: Outdoor air suction hole

44: Outdoor air discharge hole 46: Indoor air suction hole

48: Indoor air discharge hole 50: Heat exchanger

60: Suction air supply device 70: Exhaust air supply device

82: Outdoor air flow guide 84: Indoor air flow guide

92: The first grid 94: The second grid

102: Horizontal shutters 104: Vertical shutters

Detailed ways

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings. Fig. 3 and Fig. 4 are the three-dimensional view and the schematic plan view of the ventilating device according to the present invention; Fig. 5 is the three-dimensional schematic diagram according to another embodiment of the constant flow device of the ventilating device according to the present invention; Fig. 6 and Fig. 7 are Fig. 4 kinds Schematic cross-sectional view along line A-A and line B-B.

As shown in Figures 3 and 4, an outdoor air suction hole 42 for sucking in outdoor air and an indoor air discharge hole 48 for discharging indoor air are formed on one side of a rectangular housing 32, and an outdoor air outlet for discharging outdoor air is formed on the other side of the housing 32. The air discharge hole 44 and the indoor air suction hole 46 for sucking in indoor air; the heat exchanger 50 is arranged across the center of the casing 32, and the heat exchanger 50 performs heat exchange between the outdoor air and the indoor air; the above-mentioned discharge hole 44 , The inner side of 48 is provided with the air supply device 60,70 for discharging outdoor air or indoor air; the flow guide 82,84 guides the outdoor air or indoor air sucked through the suction hole to the heat exchanger 50 direction; the flow constant flow device is set In the space inside the casing 32 where the outdoor air or indoor air is exhausted from the heat exchanger 50, the outdoor air or indoor air passing through the heat exchanger 50 is converted into a laminar flow. One side of the housing 32 forms an outdoor air intake hole 42 and an indoor air exhaust hole 48 , and the other side of the housing 32 forms an outdoor air exhaust hole 44 and an indoor air intake hole 46 . And one side of the casing 32 forms an inspection opening 34h for slidingly inserting the heat exchanger 50, and an inspection mask cover 34 is detachably arranged on the inspection opening 34h. And in order to allow the upper and lower ends of the heat exchanger 50 to be slidably inserted, guide grooves 36 are respectively formed on the upper and lower sides of the casing.

The suction holes 42 , 46 and the discharge holes 44 , 48 formed in the casing 32 are respectively formed with pipe connection portions 42 a , 44 a , 46 a , 48 a protruding outward from the casing 32 . The pipe connecting portion 42a formed in the outdoor air suction hole 42 is connected to the outdoor air suction pipe (not shown) connected to the outdoor side; the pipe connecting portion 44a formed in the outdoor air discharge hole 44 is connected to the outdoor air connected to the indoor side. Suction pipe (not shown in the figure); the pipe connection part 46a formed in the indoor air suction hole 46 is connected with the indoor air suction pipe (not shown in the figure) connected to the indoor side; the pipe connection formed in the indoor air discharge hole 48 The portion 48a is connected to an indoor air suction duct (not shown) connected to the outdoor side.

The above-mentioned heat exchanger 50 is composed of a plurality of first and second heat exchange elements 52, 54 stacked on a quadrangular or hexagonal heat exchange film 50a, and the guide ribs of the first and second heat exchange elements 52, 54 (guiderib) 50b are arranged side by side along the diagonal direction. At this time, with the heat exchanger 50 as a reference, the outdoor air flows in from the lower part of one side of the housing and then is discharged from the upper part of the other side; the indoor air uses the heat exchanger 50 as a reference, flows in from the upper part of the other side of the housing and then flows from the upper part of one side. The lower part is discharged, so that the outdoor air and the indoor air perform heat exchange. A bypass flow path (not shown in the figure) is formed between the rear end of the heat exchanger 50 and the shell 32, and a bypass damper 38 that can be opened and closed is arranged on the bypass flow path. The bypass damper 38 allows the room air taken in from the room air suction hole 46 to be discharged directly through the room air discharge hole 48 without passing through the heat exchanger 50 .

Above-mentioned suction blowing device 60 is made of suction fan 62, fan housing 64, motor 66, motor support platform 68, and described suction fan 62 is a kind of squirrel-cage fan, is arranged on the inside of outdoor air discharge hole 44; A suction fan 62 is arranged inside the fan casing 64 to guide the outdoor air to the direction of the outdoor air discharge hole 44; the motor 66 is used to drive the suction fan 62; the motor support table 68 fixes the motor 66 on the fan casing 64 . Above-mentioned exhaust blower 70 is made of exhaust fan 72, fan casing 74, motor 76, motor support platform 78 the same as suction blower 60, and described exhaust fan 72 is a kind of squirrel-cage fan, is arranged on The inside of the indoor air discharge hole 48; the inside of the fan housing 74 is provided with an exhaust fan 72 to guide the indoor air to the direction of the indoor air discharge hole 48; the motor 76 is used to drive the exhaust fan 72; the motor support table 78 handles The motor 76 is fixed on the fan housing 74 . The motor 66 for driving the suction fan 62 and the motor 76 for driving the exhaust fan 72 are arranged toward the side of the housing 32 forming the inspection opening 34h, so that the user can easily disassemble through the inspection opening 34h for inspection and maintenance.

The flow guides 82, 84 include an outdoor air flow guide 82 and an indoor air flow guide 84, and the outdoor air flow guide 82 directs the outdoor air flowing into the outdoor air suction hole 42 toward the heat exchanger 50. While guiding, the indoor air discharged from the heat exchanger 50 is guided to the indoor air discharge hole 48; the indoor air flow guide 84 is arranged between the shell 32 and the other side of the heat exchanger 50, and the inflowing indoor air is sucked The indoor air in the hole 46 is guided toward the heat exchanger 50 and the outdoor air discharged from the heat exchanger 50 is guided to the outdoor air discharge hole 44 . At this time, the outdoor air flow guide 82 is arranged between the outdoor air suction hole 42 and the indoor air discharge hole 48 inside the housing 32 and one side of the heat exchanger 50, and protrudes upward at the part connected to the outdoor air suction hole 42. formed so that the outdoor air sucked through the outdoor air suction hole 42 is guided to the lower part of one side of the heat exchanger 50; The air is guided to the room air discharge hole 48 . The exhaust blower 70 is provided inside the indoor air discharge hole 48 at the portion where the outdoor air flow guide 82 protrudes downward. The indoor air flow guide 84 is arranged between the outdoor air discharge hole 44 and the indoor air suction hole 46 on the inner side of the casing 32 and the other side of the heat exchanger 50, and the part connected with the outdoor air discharge hole 44 is formed to bulge downward, so that the air can be discharged The outdoor air to the other side of the heat exchanger 50 is guided to the outdoor air discharge hole 44; the part connected with the indoor air suction hole 46 is formed to protrude upward so that the indoor air sucked through the indoor air suction hole 46 is guided to the heat exchanger 50 the lower part of the other side. The suction and blowing device 60 is provided inside the outdoor air discharge hole 44 at the portion where the indoor air flow guide 84 protrudes downward. The ends of the outdoor air flow guide 82 and the indoor air flow guide 84 form guide grooves 82a, 84a, and the two sides of the heat exchanger 50 form guide protrusions 82b, 84b that can be slidably inserted into the guide grooves 82a, 84a. . In this way, the heat exchanger 50 is slidably combined between the outdoor air flow guide 82 and the indoor air flow guide 84 .

The above-mentioned flow constant device is the first and second grids (Straightner) 92, 94 formed by several channels 92a, 94a having a certain thickness W in the horizontal direction. The first and second grilles 92, 94 are respectively arranged at the end of the outdoor air flow guide 82 or the end of the indoor air flow guide 84 close to the heat exchanger 50, and are formed parallel to the suction holes 42, 46 or discharge holes. Holes 44, 48 on one side of housing 32. Because the first and second grids 92, 94 form several passages 92a, 94a along the horizontal direction, so that the air flows along the passages 92a, 94a and becomes laminar flow, preventing the flow caused by the turbulent flow. Resistance and flow loss, thereby improving air supply efficiency. And the first and second grids 92, 94 are composed of several passages 92a, 94a with a certain thickness W. With the driving of the suction fan 62 or the exhaust fan 72, the pressure of the suction fan 62 or the exhaust fan 72 reduce, so that a pressure difference is generated at the front and rear ends of the first and second grids 92, 94, thus the air flows uniformly in front of the first and second grids 92, 94; The air flows uniformly in front of the grids 92, 94, and the air flows uniformly in front of the heat exchanger 50, thereby improving the heat exchange efficiency.

As shown in FIG. 5 , the flow constant flow device can also be several horizontal louvers 102 arranged at a certain distance in the vertical direction or several vertical louvers 104 arranged at a certain distance in the horizontal direction. The above-mentioned louvers 102, 104 have a certain width in order to guide the flow of air. The flow constant flow device can be composed of only the horizontal louvers 102 or only the vertical louvers 104 , and the horizontal louvers 102 and the vertical louvers 104 can also be arranged together. When the horizontal louvers 102 are set, the air discharged from the heat exchanger 50 is constant flow in the horizontal direction along the two sides of the horizontal louvers 102; Direction of constant flow, thereby transforming turbulent flow into laminar flow. And the horizontal louvers 102 and the vertical louvers 104 are rotatably arranged so that the space for discharging outdoor air or indoor air can be opened and closed, and the space for discharging outdoor air or indoor air from the heat exchanger 50 is blocked when the arousing device stops running. Specifically, the rotating protrusions 102a protruding from both sides of the horizontal louver 102 are rotatably arranged on the support platforms 103 on both sides, and are connected to each other through an additional connecting member (not shown) that is vertically arranged on the rotating protrusions 102a, One of the rotation protrusions 102a in the horizontal shutter 102 is connected to a step motor (not shown in the figure) so as to be rotated. The vertical louvers 104 are similar to the horizontal louvers 102, and the protruding rotating protrusions 104a at the front and rear ends are rotatably arranged on the upper and lower support platforms 105, and are connected to each other by horizontally setting the additional connecting parts (not shown) of the rotating protrusions 104a One of the rotation protrusions 104a in the vertical shutter 104 is connected to a stepping motor (not shown in the figure) so as to be rotated.

The action process of the ventilation device of the present invention will be described below. After the arousal device is activated, the suction fan 62 and the exhaust fan 72 are driven to blow outdoor air or indoor air, and the outdoor air or indoor air flowing into the casing 32 passes through the heat exchanger 50 for heat exchange, and then the outdoor air is supplied The indoor air is exhausted to the outdoor side at the same time as the indoor side. The process of supplying outdoor air is described below with reference to accompanying drawing 6, and along with the rotation of suction fan 62, the outdoor air of outdoor side flows into casing 32 interiors through outdoor air suction hole 42 after the outdoor air suction duct. The outdoor air flowing into the casing 32 is guided to the lower part of one side of the heat exchanger 50 by the outdoor air flow guide 82 , and exchanges heat with the indoor air while passing through the heat exchanger 50 , and then flows from the heat exchanger 50 After the other side of the discharge passes through each channel 92a of the first grid 92, it is transformed into a laminar flow. Because the first grid 92 is composed of several passages 92a with a certain thickness W in the horizontal direction, the outdoor air is transformed into a laminar flow while flowing along the passages 92a, which reduces the flow resistance and flow caused by the turbulent flow. loss, which improves the air supply efficiency, and because there is a pressure difference between the front and rear ends of the first and second grilles 92, the air in front of the first grill 92 flows evenly, and as the air in front of the first grill 92 Uniform flow, the outdoor air also flows uniformly in front of the heat exchanger 50, thereby improving heat exchange efficiency. The outdoor air passing through the first grille 92 is finally discharged to the outside of the housing 32 after passing through the suction fan 62 . When discharged, it passes through the outdoor air discharge hole 44 and then is supplied to the indoor side through the outdoor air discharge duct.

The process of supplying indoor air is described below with reference to accompanying drawing 7, along with the rotation of exhaust fan 72, the indoor air of indoor side flows into housing 32 inside through indoor air suction hole 44 after passing through indoor air suction duct. The indoor air flowing into the housing 32 is guided to the lower part of the other side of the heat exchanger 50 by the indoor air flow guide 84, and exchanges heat with the outdoor air during the process of passing through the heat exchanger 50, and then flows from the heat exchanger 50 is converted into a laminar flow while passing through each channel 94a of the second grid 94 after being discharged from one side. Since the second grille 94 is composed of several passages 94a having a certain thickness W in the horizontal direction, the room air is transformed into a laminar flow while flowing along the passages 94a. At this time, the second grille 94 plays the same role as the first grille 92, which not only improves the air supply efficiency but also improves the heat exchange efficiency. The indoor air passing through the second grille 94 is finally exhausted to the outside of the housing 32 after passing through the exhaust fan 72 . When discharged, it passes through the indoor air discharge hole 48 and then is supplied to the indoor side through the indoor air discharge duct.

Claims (6)

1, a kind of air interchanger, comprise shell, air-supply arrangement, heat exchanger, the constant current device flows, be formed with a pair of inlet hole and a pair of tap of discharging outdoor air or room air of suction chamber outer air or room air on the shell, air-supply arrangement is separately positioned on a pair of tap inboard, blow outdoor air or room air, heat exchanger portion in the enclosure crosses and is provided with, for carrying out heat exchange action between outdoor air and the room air, the one side of shell forms outdoor air inlet hole and room air tap, opposing face forms outdoor air tap and room air inlet hole, air interchanger also comprises outdoor air stream guider and room air stream guider, when outdoor air stream guider guides the outdoor air heat exchanger direction that flows into the outdoor air inlet hole room air through over-heat-exchanger is guided to room air tap direction, when room air stream guider guides the room air heat exchanger direction that flows into the room air inlet hole outdoor air through over-heat-exchanger is guided to outdoor air tap direction, it is characterized in that: described mobile constant current device is arranged on the space from heat exchanger discharge outdoor air or room air of enclosure, outdoor air or room air by heat exchanger are transformed into Laminar Flow, and the constant current device that flows is arranged on room air stream guider end or the outdoor air stream guider end near heat exchanger.

2, air interchanger according to claim 1 is characterized in that: described mobile constant current device is parallel to the one side of shell.

3, air interchanger according to claim 2 is characterized in that: described mobile constant current device is to have the grid that certain thickness several passages form.

4, air interchanger according to claim 2 is characterized in that: described mobile constant current device several horizontal louvres for keeping at a certain distance away in vertical direction and being provided with.

5, air interchanger according to claim 2 is characterized in that: described mobile constant current device several vertical blinds for keeping at a certain distance away in the horizontal direction and being provided with.

6, according to claim 4 or 5 described air interchangers, it is characterized in that: the rotatable setting of described several shutters makes it possible to open and close the space of discharging outdoor air or room air from heat exchanger.

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