CN219913410U - Opening and closing mechanism for ventilation of shell of heating ventilation air conditioner - Google Patents

Abstract

The utility model discloses an opening and closing mechanism for ventilation of a shell of a heating ventilation air conditioner, and belongs to the technical field of heat dissipation of heating ventilation equipment. The mechanism comprises a heat dissipation shell, a motor, a screw rod, a screw block, a telescopic plate and a fixing plate, wherein the motor, the screw rod, the screw block, the telescopic plate and the fixing plate are arranged inside the heat dissipation shell. An output shaft of the motor is connected with the screw rod and drives the screw rod to rotate, and the screw block is movably sleeved outside the screw rod through threads and moves up and down along with the rotation of the screw rod. The fixed plate is fixedly connected with the screw block and the expansion plate, the expansion plate is movably mounted in a chute on the side surface of the opening of the heat dissipation shell, and the screw block drives the fixed plate to enable the expansion plate to slide in the chute, so that the up-and-down reciprocating motion of the expansion plate is realized through forward and reverse rotation of the motor. The emergency vent is opened through the mode of sliding up and down to this opening and closing mechanism, can effectively solve the upset mode of opening and receive wind pressure or foreign matter influence and can't open the problem.

Description

Opening and closing mechanism for ventilation of shell of heating ventilation air conditioner

Technical Field

The utility model belongs to the technical field of heat dissipation of heating ventilation equipment, and particularly relates to an opening and closing mechanism for ventilation of a shell of a heating ventilation air conditioner.

Background

The heating ventilation air conditioning system is an important system for ensuring the stability of the internal environment of a large-scale industrial building or commercial building, is a specific support system for realizing the functions of air conditioning (including heating and refrigerating) of the interior of the building, and is important for ensuring the environmental comfort of personnel in the interior of the building.

With the continuous development of modern building technology, the heating ventilation and air conditioning system is increasingly complicated and intelligent. However, regardless of the change of the hvac system, the air is extracted from the outside environment and the air in the interior of the building is exhausted, so that the air exchange and even the temperature exchange of the air intake and exhaust devices are unavoidable. Among them, the heat dissipating device of the hvac system is an important structure in which air exchange and dissipation of excessive heat are realized. The heat dissipation effect of the heat dissipation device is poor, the adjusting effect of the internal environment of the building is affected if the heat dissipation device is light, and the equipment such as an air conditioner, a fan and the like is shut down due to high temperature if the heat dissipation device is heavy, so that the normal operation of the system is seriously affected.

At present, a heat radiator of a heating ventilation air conditioning system mainly pumps out building hot air from the inside through a fan. Or the heat dissipation effect is improved by means of a heat dissipation sleeve, a heat dissipation patch and the like. The heat dissipation effect of the heat dissipation sleeve, the heat dissipation patch and the like can be improved to a certain extent, but when excessive heat needs to be dissipated, the heat accumulation can not be avoided after the highest heat dissipation effect is achieved. In order to further enhance the heat dissipation effect, some prior art add an emergency heat dissipation door on the heat dissipation shell. For example, the prior patent CN 217209766U discloses a heat dissipation structure of a heating ventilation air conditioner. The two side surfaces of the shell of the heat radiation structure are rotatably provided with rotating shafts through fixed blocks, the outer surfaces of the rotating shafts are fixedly connected with door blocks, and the emergency heat radiation doors are fixedly connected through the bottoms of the door blocks. The emergency heat dissipation door is pushed to rotate outwards to be opened through a heat dissipation assembly arranged in the shell. The heat dissipation assembly comprises a pressure box, a pressure collecting cover positioned at the bottom of the pressure box, a hollow column connected with the bottom of the pressure collecting cover, a pressure rod which is sealed in the hollow column and can slide, and the like. The pressure box is internally provided with a pressure collecting balloon, and the pressure collecting balloon is internally filled with nitrogen. After the temperature rises, nitrogen is heated and expanded, the pressure rod of the hollow column is extruded by hydraulic oil, other structures are finally driven to push the emergency heat dissipation door to rotate reversely, and the side part of the shell is opened, so that internal hot air is released as soon as possible. However, this mechanism still has the following problems:

firstly, the opening direction of the emergency heat-dissipating door is lateral opening, when wind pressure exists outside the shell, the opening of the emergency heat-dissipating door can be influenced, and even the emergency heat-dissipating door can not be opened;

secondly, when the lateral opening tightly-applied heat-dissipating door is opened, the outer space of the shell is required to be occupied, and when an obstacle exists outside, the opening of the emergency heat-dissipating door can be influenced certainly;

thirdly, the power for opening the emergency heat dissipation door comes from the pressure collecting air ball, and two layers of media, namely a shell of the pressure box and hydraulic oil, are coated outside the emergency heat dissipation door. The presence of the two layers of medium has no doubt an effect on the conduction of temperature, resulting in an insufficiently sensitive response to temperature.

Disclosure of Invention

First, the technical problem to be solved

The utility model aims to solve one of the following technical problems in the prior art or related technologies:

the existing heat dissipating device of the heating ventilation air conditioning system has the technical problems that the temperature response is insensitive, the emergency heat dissipating door is opened in an outward rotation mode, and the heat dissipating door cannot be opened when wind pressure or external foreign matters exist or the space is limited.

(II) technical scheme

In order to solve the technical problems, the utility model provides an opening and closing mechanism for ventilation of a shell of a heating ventilation air conditioning device, which adopts the following specific technical scheme:

an opening and closing mechanism for ventilation of a shell of a heating ventilation air conditioner comprises a heat dissipation shell 1, wherein an opening 11 is respectively arranged on the opposite side surfaces of the heat dissipation shell 1. Meanwhile, the opening and closing mechanism also comprises a motor 2, a screw 4, a screw block 5, a telescopic plate 7 and a fixed plate 8 which are arranged in the heat dissipation shell 1; an output shaft of the motor 2 is connected with the screw 4 and drives the screw 4 to rotate; the screw block 5 is movably sleeved outside the screw 4 through threads and moves up and down along with the rotation of the screw 4; the fixed plate 8 is fixedly connected with the screw block 5 and the expansion plate 7, the expansion plate 7 is movably arranged in the chute 12 on the side wall of the opening 11, and the screw block 5 drives the fixed plate 8 to enable the expansion plate 7 to slide in the chute 12, so that the up-and-down reciprocating motion of the expansion plate 7 is realized through the forward and backward rotation of the motor 2.

Preferably, the opening and closing mechanism further comprises a speed reducer 3; the speed reducer 3 is arranged between the motor 2 and the screw 4, and an output shaft of the motor 2 is fixedly connected with the screw 4 through a pin 9 after passing through the speed reducer 3.

Preferably, the opening and closing mechanism further comprises a temperature sensor 6; the temperature sensor 6 is connected with a motor controller 21 of the motor 2, and the motor controller 21 is used for controlling the on-off of the motor 2.

More preferably, the temperature sensor 6 is mounted in the middle of the top of the heat dissipation housing 1; a lead hole 14 is provided at the bottom of the heat dissipation case 1, and wires of the motor 2 and the temperature sensor 6 are connected to an external power supply through the lead hole 14.

Preferably, the motor 2 is fixedly installed at the top of the heat dissipation shell 1, the output shaft is downward, and a shaft hole 13 is arranged at a corresponding position at the bottom of the heat dissipation shell 1; a bearing is arranged in the shaft hole 13, one end of the screw 4 is connected with the motor output shaft through a pin 9, and the other end is connected with the bearing.

More preferably, the shaft hole 13 is offset from the side opening 11 of the heat dissipation housing 1.

Preferably, the motor 1, the screw 4 and the screw block 5 are arranged in the middle of the rear part in the heat dissipation shell 1, and are fixedly connected with the expansion plates 7 at the two sides simultaneously through a fork-shaped fixing plate 8 fixedly connected with the screw block 5.

More preferably, a screw block mounting hole 81 is formed in the middle of the fork-shaped fixing plate 8; the screw block mounting hole 81 is provided with a threaded hole 82, and is fixedly connected with the screw block 5 through the threaded hole 82 by virtue of a bolt; fork arms 83 extend from two sides of the screw block mounting hole 81, and connecting parts 84 fixedly connected with the expansion plate 7 are arranged on the outer sides of the tail ends of the two fork arms 83.

Preferably, the heat dissipation housing 1 is provided with a side surface of the opening 11, the opening 11 is disposed at a lower half part of the side surface, and an upper half part of the side surface is provided with a telescopic slot into which the telescopic plate 7 enters when ascending.

(III) beneficial effects

Compared with the prior art, the utility model has the beneficial effects that:

1. the opening and closing mechanism adopts the motor to drive the screw rod to drive the screw block to realize up-and-down reciprocating motion, thereby realizing up-and-down motion of the expansion plate on the side surface of the heat dissipation shell. The existing overturning opening mode is changed, and the vertical telescopic mode is adopted, so that the opening of the shell cooling emergency channel does not occupy the outer space of the shell, and the problem that the shell cannot be opened due to the blocking of wind pressure and obstacles can be avoided. Meanwhile, the running stability of the whole device is higher, and the controllability is higher.

2. The temperature sensor linked with the motor controller is arranged in the heat dissipation shell of the opening and closing mechanism, and the starting and stopping temperature of the motor can be preset according to actual conditions, so that the sensitivity of the opening and closing mechanism to the temperature is greatly improved, and the overtemperature problem can be more effectively avoided.

3. According to the utility model, the opening and closing mechanism is provided with the fork-shaped fixing plate and is simultaneously connected with the telescopic plates at the two opposite sides, so that the motor can drive the telescopic plates at the two sides to act, and the cooperative linkage effect is better. Simultaneously, the contralateral expansion plate which is opened and closed is more beneficial to the circulation of outside air, and is convenient for quickly reducing the internal temperature of the overheat radiating shell.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

fig. 1 schematically shows a schematic front view of the opening and closing mechanism of a preferred embodiment of the present utility model (omitting the front end plate and wires of the heat dissipating housing).

Fig. 2 schematically shows a schematic perspective view of fig. 1.

Fig. 3 schematically shows a schematic perspective view of a heat dissipating housing according to a preferred embodiment of the present utility model.

Fig. 4 is a schematic front view schematically showing an opening and closing mechanism installed in a heat dissipating case according to another preferred embodiment of the present utility model (omitting a front end plate and wires of the heat dissipating case).

Fig. 5 is a schematic perspective view schematically showing a fixing plate in a preferred embodiment of the present utility model.

Reference numerals referred to in the above figures are:

1-a heat dissipation shell, 2-a motor, 3-a speed reducer, 4-a screw rod, 5-a screw block, 6-a temperature sensor, 7-a telescopic plate, 8-a fixing plate and 9-a pin,

11-open holes, 12-sliding grooves, 13-shaft holes, 14-lead holes, 15-fan mounting holes,

a 21-a controller of the electric motor,

81-screw mounting holes, 82-screw holes, 83-fork arms and 84-connecting parts.

Description of the embodiments

Embodiments of the utility model are described in detail below with reference to the attached drawings, but the utility model can be implemented in a number of different ways, which are defined and covered by the claims.

In the following description of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and "upright", etc. indicate orientation or positional relationship based on that shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the following description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; the connection may be direct or indirect through an intermediate medium, or may be communication between two components. It will be apparent to those skilled in the art that the terms used in the description herein are to be read in the specific sense.

In addition, in the following description of the present utility model, unless otherwise indicated, the meaning of "plural", "plural sets", "multiple roots" is two or more.

Fig. 1 schematically shows a schematic front view of the opening and closing mechanism of a preferred embodiment of the present utility model (omitting the front end plate and wires of the heat dissipating housing). Fig. 2 schematically shows a schematic perspective view of fig. 1. As can be seen from fig. 1 and 2, in the preferred embodiment, two openings 11 are provided at the bottoms of the two long side surfaces of the hollow rectangular parallelepiped heat dissipation case 1, and a limit chute 12 is provided at the middle of the side and bottom of the opening 11. And a slot (not shown) is provided in the middle of the side of the upper portion of the opening 11. A telescoping plate 7 is mounted in the aperture 11 to form a portal structure to effect opening and closing of the aperture 11. Two groups of opening and closing action mechanisms are correspondingly arranged in the heat dissipation shell 1. Each group of mechanism comprises a motor 2 fixedly connected with the top of the shell, a screw 4 connected with the motor 2 through a speed reducer 3, a screw block 5 movably sleeved on the screw 4, and a fixing plate 8 fixedly connected with the screw block 5. One end of the bottom of the screw 4 is connected with a shaft hole 13 at the bottom of the heat dissipation shell 1 through a bearing. The fixed plate 8 is fixedly connected with the expansion plate 7, so that when the motor 2 rotates, the screw 4 is driven to rotate, the screw 4 drives the screw block 5 to move through threads, and the screw block 5 drives the expansion plate 7 to move up and down through the fixed plate 8. The screw 4 is connected with the power output shaft of the speed reducer 3 in a plug-in fit manner, and a through hole for the fixing pin 9 to be plugged in is formed in the joint of the screw 4 and the power output shaft. In order to prevent the fixing pin 9 from being thrown off during rotation, through holes are provided at both ends of the pin 9 and locked by means of the insertion cotter pin.

Meanwhile, a temperature sensor 6 is arranged in the middle of the inner top of the heat dissipation shell 1, and the temperature sensor 6 is connected with a motor controller 21 of the motor 2, so that temperature information can be transmitted to the motor controller 21 to control the on-off of the motor 2. A lead hole 14 is further provided at the bottom of the heat dissipation case 1 to facilitate connection of the motor, the temperature sensor, etc. to an external power source. The temperature sensor can be a logic output type temperature sensor, such as LM56, MAX6501-MAX6504 and the like. The temperature sensor does not need to display specific measured values, and can be used for starting the motor and starting and running for a set time in a linkage manner when reaching a preset temperature threshold according to a corresponding self-set temperature range. And when the temperature is lower than the preset temperature threshold, the motor controller can be linked to start the motor to rotate reversely, and the motor is started and operated for a set time.

Fig. 3 schematically shows a schematic perspective view of a heat dissipating housing according to a preferred embodiment of the present utility model. As can be seen from fig. 3, in the preferred embodiment, two shaft holes 13 at the bottom of the heat dissipation housing 1 are provided at the middle of the opening 11, so as to facilitate the installation of the fixing plate 8, and make it easier for the fixing plate 8 to drive the expansion plate 7 to move up and down. In addition, a fan mounting hole 15 for mounting a fan is provided in the heat dissipation case 1 so as to dissipate heat under normal conditions. In order to reduce the ventilation of the components such as the screw block, the position of the shaft hole 13 may be changed so that the mounting positions of the components such as the motor 2, the speed reducer 3, and the screw 4 are set aside by the positions corresponding to the two openings 11. In order to facilitate the installation of the expansion plate 7, the end plate at the front part of the heat dissipation shell 1 can be installed in a detachable and fixed connection mode by bolts and the like, so that the end cover at the front end is installed after the expansion plate 7 is installed.

Fig. 4 is a schematic front view schematically showing an opening and closing mechanism installed in a heat dissipating case according to another preferred embodiment of the present utility model (omitting a front end plate and wires of the heat dissipating case). As can be seen from fig. 4, in the preferred embodiment, a set of motors is provided to drive the expansion plates 7 on both sides simultaneously. The power and transmission structure of the opening and closing mechanism main body is basically the same as that shown in fig. 1, and the main change is that the two sides of the opening and closing mechanism main body are simultaneously connected with the expansion plates 7 through the fixed plates 8 at the bottom. The arrangement mode can save a group of motors, screws and screw blocks, and is beneficial to reducing the cost. Meanwhile, as lifting is realized through the same motor, the synchronicity of the expansion plates at the two sides is better.

Fig. 5 is a schematic perspective view schematically showing a fixing plate in a preferred embodiment of the present utility model. As can be seen from fig. 5, in the preferred embodiment, the fixing plate 8 is shown as a fork, with a screw mounting hole 81 in the middle. Screw holes 82 are respectively arranged on opposite sides of the screw block mounting holes 81, and the fixing plate 8 can be fixedly connected with the screw block through bolts and the screw holes 82 by a fixed amount. Of course, the fixing connection can be performed by welding or other known fixing methods. Two fork arms 83 are formed by extending in opposite directions on two sides of the screw block mounting hole 81 and then bending in the same direction. Two protruding connecting portions 84 are provided on the outer sides of the distal ends of the fork arms 83, and the connecting portions 84 are fixedly connected to the expansion plate 7. The fork-shaped fixing plate 8 can be driven by the middle screw block 8 and simultaneously drives the telescopic plates 7 at two sides to move up and down. Meanwhile, the installation position of the screw block 5 can be close to the rear side of the shell in the arrangement mode, so that after the emergency heat radiation door is opened, the components such as the motor 2, the speed reducer 3, the screw 4 and the like can not block the ventilation of air.

The working process of the opening and closing mechanism is that when the temperature in the heat dissipation shell 1 is continuously increased and reaches the preset action temperature threshold value of the temperature sensor 6, the motor controller enables the motor 2 to start to drive the screw 4 to rotate, and the screw block 5 moves upwards along the screw thread of the screw 4. The screw block 5 drives the fixing plate 8 and the expansion plate 7 connected with the fixing plate 8 to rise upwards in the upward movement process, so that the emergency heat dissipation port is opened. Stopping opening the emergency cooling port to the maximum when the motor reaches the preset action time or rotates to the preset number of turns. When the temperature is reduced to a preset temperature threshold, the motor controller enables the motor 2 to rotate reversely to enable the screw block 5 to descend, the expansion plate 7 is driven to descend, and finally the emergency heat dissipation opening is closed. The opening and closing mechanism realizes the opening and closing of the emergency heat dissipation port in an up-and-down telescopic opening mode, and can effectively avoid the problem that the opening cannot be opened due to wind pressure or foreign matter limitation when the opening and closing mechanism is turned over. Meanwhile, the mode is more stable in operation, stronger in controllability and more sensitive to the response of temperature change.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model. What is not described in detail in this specification is prior art known to those skilled in the art.

Claims (9)

1. An opening and closing mechanism for ventilation of a shell of a heating ventilation air conditioning device comprises a heat dissipation shell (1), wherein an opening (11) is respectively arranged on the opposite side surfaces of the heat dissipation shell (1); the heat dissipation device is characterized by further comprising a motor (2), a screw (4), a screw block (5), a telescopic plate (7) and a fixing plate (8) which are arranged in the heat dissipation shell (1); an output shaft of the motor (2) is connected with the screw (4) and drives the screw (4) to rotate; the screw block (5) is movably sleeved outside the screw (4) through threads and moves up and down along with the rotation of the screw (4); the fixed plate (8) is fixedly connected with the screw block (5) and the expansion plate (7), the expansion plate (7) is movably mounted in the side wall sliding groove (12) of the opening (11), the screw block (5) enables the expansion plate (7) to slide in the sliding groove (12) by driving the fixed plate (8), and accordingly up-and-down reciprocating motion of the expansion plate (7) is achieved through forward and reverse rotation of the motor (2).

2. The opening and closing mechanism for ventilation of a casing of a heating ventilation air conditioning apparatus according to claim 1, characterized by further comprising a speed reducer (3); the speed reducer (3) is arranged between the motor (2) and the screw (4), and an output shaft of the motor (2) is fixedly connected with the screw (4) through a pin (9) after passing through the speed reducer (3).

3. The opening and closing mechanism for ventilation of a casing of a hvac device according to claim 1, further comprising a temperature sensor (6); the temperature sensor (6) is connected with a motor controller (21) of the motor (2), and the motor controller (21) is used for controlling the on-off of the motor (2).

4. An opening and closing mechanism for ventilation of a housing of a heating ventilation air conditioning device according to claim 3, characterized in that the temperature sensor (6) is mounted in the middle of the top of the heat dissipation casing (1); the bottom of the heat dissipation shell (1) is provided with a lead hole (14), and the electric wires of the motor (2) and the temperature sensor (6) are connected with an external power supply through the lead hole (14).

5. The opening and closing mechanism for ventilation of a shell of a heating ventilation air conditioning device according to claim 1, wherein the motor (2) is fixedly arranged at the top of the heat dissipation shell (1), and an output shaft is downward, and a shaft hole (13) is arranged at a corresponding position at the bottom of the heat dissipation shell (1); the bearing is arranged in the shaft hole (13), one end of the screw rod (4) is connected with the motor output shaft through a pin (9), and the other end is connected with the bearing.

6. The opening and closing mechanism for ventilation of a housing of a heating ventilation air conditioning unit according to claim 5, characterized in that the shaft hole (13) is located offset from the side opening (11) of the heat dissipation housing (1).

7. The opening and closing mechanism for ventilation of a shell of a heating ventilation air conditioning device according to claim 1, wherein the motor (2), the screw (4) and the screw block (5) are arranged in the middle of the rear part in the heat dissipation shell (1) and are fixedly connected with the telescopic plates (7) at the two sides simultaneously through a fork-shaped fixing plate (8) fixedly connected with the screw block (5).

8. The opening and closing mechanism for ventilation of a housing of a heating ventilation air conditioning device according to claim 7, characterized in that a screw block mounting hole (81) is provided in the middle of the fork-shaped fixing plate (8); the screw block mounting hole (81) is provided with a threaded hole (82) and is fixedly connected with the screw block (5) through the threaded hole (82) by virtue of a bolt; fork arms (83) extend out of two sides of the screw block mounting hole (81), and connecting parts (84) fixedly connected with the expansion plates (7) are arranged on the outer sides of the tail ends of the two fork arms (83).

9. The opening and closing mechanism for ventilation of a housing of a heating ventilation air conditioning device according to claim 1, characterized in that the heat dissipation housing (1) is provided with a side surface of the opening (11), the opening (11) is provided at a lower half part of the side surface, and an upper half part of the side surface is provided with a telescopic groove into which the telescopic plate (7) enters when ascending.