CN219607323U

CN219607323U - Double-temperature control PTC electric heating air curtain machine

Info

Publication number: CN219607323U
Application number: CN202321088001.7U
Authority: CN
Inventors: 赖金桥; 解博超; 甄建柱; 李清泉
Original assignee: Guangdong Nedfon Air System Co Ltd
Current assignee: Guangdong Nedfon Air System Co Ltd
Priority date: 2023-05-08
Filing date: 2023-05-08
Publication date: 2023-08-29
Anticipated expiration: 2033-05-08

Abstract

The utility model provides a double temperature control PTC electric heating air curtain machine, comprising: the device comprises a shell, an air supply assembly, a first contactor and a second contactor. The shell is internally provided with two air channels which are arranged side by side, the two air channels are internally provided with a first PTC heating component and a second PTC heating component, the air supply component is arranged in the shell and communicated with the two air channels, the first contactor is respectively electrically connected with the two PTC heating components of the air channels, and the second contactor is respectively electrically connected with the two PTC heating components of the air channels. According to the double-temperature control PTC electric heating air curtain machine, when in a high-temperature mode, rapid heating of air flow in an air duct is realized through the two PTC heating assemblies; when in a low-temperature mode, the first PTC heating component or the second PTC heating component heats air flow in the air duct, and the single PTC heating component can fully heat the air flow at different positions in the air duct, so that the temperature of the air curtain is uniform, and higher temperature difference at different positions of the air curtain is avoided.

Description

Double-temperature control PTC electric heating air curtain machine

Technical Field

The utility model relates to the technical field of air curtain machines, in particular to a double-temperature control PTC electric heating air curtain machine.

Background

The air curtain machine is a strong air flow generated by the rotation of a fan, sends out curtain-shaped air flow with a certain speed to form an invisible door curtain, and the double-temperature control PTC electric heating air curtain machine heats the air flow generated by the fan, and utilizes high-temperature air flow to block indoor and outdoor cold and heat exchange and prevent indoor heat loss, thereby playing the roles of heat preservation and heating, and being widely applied to public buildings, factories, gymnasiums, movie theatres, casinos and outer doors which are frequently opened in industries such as electronics, instruments, pharmacy, food, precision machining, chemical industry, service, business and the like.

The air curtain machine heats the air in the air duct through a single PTC heating component, and when the air curtain machine heats normally, the PTC heating component can cover most of the area on the cross section of the air duct, so that the heating temperature rise of different positions of the air duct is met, but when the traditional air curtain machine operates in a low-temperature mode, the heating structure of the PTC heating component needs to be powered off, only the heating structure of the PTC heating component heats, so that some positions on the cross section of the air duct cannot be heated, only some positions of the air curtain are heated, and other positions of the air curtain are cold, so that the temperature difference of different positions of the air curtain is obvious, and the user experience is influenced.

Disclosure of Invention

The utility model aims to overcome the defects and shortcomings in the prior art and provides a double-temperature control PTC electric heating air curtain machine.

One embodiment of the present utility model provides a dual temperature control PTC electric heating air curtain machine comprising: the device comprises a shell, an air supply assembly, a first contactor and a second contactor.

The shell is internally provided with two air channels which are arranged side by side, the two air channels are internally provided with a first PTC heating component and a second PTC heating component which are sequentially arranged along the air supply direction of the air channels, the air supply component is arranged in the shell and communicated with the two air channels, the first contactor is respectively electrically connected with the first PTC heating components of the two air channels, and the second contactor is respectively electrically connected with the second PTC heating components of the two air channels.

Compared with the prior art, the double-temperature control PTC electric heating air curtain machine can start the first PTC heating components and the second PTC heating components simultaneously in a high-temperature mode, the rapid temperature rise of air flow in the air duct is realized through the two PTC heating components, the heating efficiency is improved, and in a low-temperature mode, the first contactor controls the two first PTC heating components to stop running or the second contactor controls the two second PTC heating components to stop running, and the single PTC heating component can still fully heat the air flow in the air duct, so that the temperatures of different positions of the air curtain are uniform, the higher temperature difference of different positions of the air curtain is avoided, and the user experience is improved.

In some alternative embodiments, an air supply housing is disposed within the housing, the air duct is formed within the air supply housing, and the first contactor and the second contactor are disposed outside the air supply housing.

In some alternative embodiments, the air supply housing includes two fixing plates arranged side by side and three partition plates disposed between the two fixing plates, the air duct is formed between two adjacent partition plates and two fixing plates, and the first contactor and the second contactor are disposed on one of the fixing plates.

In some alternative embodiments, a mounting bracket is provided on the outside of the blower housing, and the first and second contactors are detachably fastened to the mounting bracket by fasteners.

In some optional embodiments, a main control board is further disposed in the housing, and the main control board is respectively in signal connection with the first contactor, the second contactor and the air supply assembly.

In some optional embodiments, the air supply assembly includes two volutes disposed in the housing, two wind wheels correspondingly disposed in the volutes, and a motor in driving connection with the wind wheels, and the volutes are in one-to-one communication with the air duct.

In some alternative embodiments, the first PTC heating assembly and the second PTC heating assembly are removably disposed within the air tunnel by threaded connections.

In some optional embodiments, the air outlet of the air duct is in a strip shape, two air deflectors are arranged in the air duct, and the two air deflectors are gradually close to two sides of the air outlet of the air duct in the direction from the air inlet to the air outlet of the air duct.

In order that the utility model may be more clearly understood, specific embodiments thereof will be described below with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic diagram of a dual temperature control PTC electric heating air curtain machine according to one embodiment of the utility model;

FIG. 2 is a schematic diagram of a dual temperature control PTC electric heating air curtain machine according to an embodiment of the utility model with part of the structure hidden;

FIG. 3 is a cross-sectional view of one of the angles of a dual temperature control PTC electric heating air curtain machine according to one embodiment of the present utility model;

fig. 4 is another angular cross-sectional view of a dual temperature control PTC electrothermal air curtain machine according to one embodiment of the utility model.

Reference numerals illustrate:

10. a housing; 11. an air duct; 111. an air outlet; 112. an air inlet; 113. an air deflector; 12. a first PTC heating element; 13. a second PTC heating assembly; 14. an air supply shell; 15. a fixing plate; 16. a partition plate; 17. a mounting frame; 18. a main control board; 20. an air supply assembly; 21. a volute; 22. a wind wheel; 23. a motor; 30. a first contactor; 40. and a second contactor.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model. In the description of the present utility model, unless otherwise indicated, the meaning of "plurality" is 2 or more, and the meaning of "several" is 1 or more. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated unless otherwise indicated.

Referring to fig. 1 and 2, fig. 1 is a schematic structural diagram of a dual temperature control PTC electric heating air curtain machine according to an embodiment of the present utility model, and fig. 2 is a schematic structural diagram of the dual temperature control PTC electric heating air curtain machine according to an embodiment of the present utility model when hiding a part of the structure, the dual temperature control PTC electric heating air curtain machine comprising: the housing 10, the air blowing assembly 20, the first contactor 30, and the second contactor 40.

Referring to fig. 3, which is a cross-sectional view of one angle of a dual temperature control PTC electric heating air curtain machine according to an embodiment of the present utility model, two air ducts 11 are formed in a housing 10, and a first PTC heating assembly 12 and a second PTC heating assembly 13 are disposed in the two air ducts 11 in sequence along the air supply direction of the air ducts 11, and the first PTC heating assembly 12 and the second PTC heating assembly 13 can generally cover most of the cross section of the air ducts 11, so that each position of the air ducts 11 can be heated, thereby meeting the heating requirement of the air curtain. The air supply assembly 20 is disposed in the housing 10 and is in communication with the two air ducts 11, and the air supply assembly 20 is configured to generate an air flow, and the air flow is blown out through the air ducts 11 to form an air curtain.

The first contactors 30 are electrically connected with the first PTC heating assemblies 12 of the two air channels 11, respectively, the first contactors 30 may be connected with the first PTC heating assemblies 12 through wires, the second contactors 40 are electrically connected with the second PTC heating assemblies 13 of the two air channels 11, respectively, and the second contactors 40 may be connected with the second PTC heating assemblies 13 through wires. In the high temperature mode, the first contactor 30 and the second contactor 40 are connected, so that the first PTC heating component 12 and the second PTC heating component 13 in the two air channels 11 are heated, high-efficiency heating is realized, and the temperature rise is fast.

In the low temperature mode, one of the first contactor 30 and the second contactor 40 is connected, the other is disconnected, in this embodiment, the first contactor 30 is connected, the second contactor 40 is disconnected, for example, the first contactor 30 is connected, the second contactor 40 is disconnected, the first PTC heating component 12 in the air duct 11 is heated, the second PTC heating component 13 stops heating, so that the temperature increased by heating is reduced, different scene requirements are met, the first PTC heating component 12 can still heat the air in the air duct 11, the phenomenon that different positions have larger temperature differences due to local heating of an air curtain can not occur, and the user experience is improved.

In addition, when two first PTC heating assemblies 12 and two second PTC heating assemblies 13 are controlled simultaneously, contactors with larger current carrying specifications are needed, and the first contactors 30 are correspondingly used for respectively controlling the two first PTC heating assemblies 12, and the second contactors 40 are correspondingly used for respectively controlling the two second PTC heating assemblies 13, so that the current carrying specifications of the trigger are reduced, and thus the cost is reduced, for example, the contactors with the two first PTC heating assemblies 12 and the two second PTC heating assemblies 13 needing current carrying 80A are controlled simultaneously.

To facilitate the production and assembly, in some alternative embodiments, the blower housing 14 is disposed in the casing 10, the air duct 11 is formed in the blower housing 14, and the first contactor 30 and the second contactor 40 are disposed outside the blower housing 14. Of course, the formation of the air duct 11 is not limited thereto, and those skilled in the art can select other suitable structures according to the teachings of the present utility model.

To facilitate forming the duct 11, in some alternative embodiments, the air supply housing 14 includes two fixing plates 15 arranged side by side and three partition plates 16 disposed between the two fixing plates 15, the duct 11 is formed between two adjacent partition plates 16 and the two fixing plates 15, and the first and second contactors 30 and 40 are disposed on one of the fixing plates 15. Of course, the configuration of blower housing 14 is not limited thereto and those skilled in the art can select other suitable configurations in light of the teachings of the present utility model.

To facilitate the installation of the first and second contactors 30, 40, in some alternative embodiments, the outside of the air supply housing 14 is provided with a mounting bracket 17, and the first and second contactors 30, 40 are detachably fastened to the mounting bracket 17 by fasteners. In this embodiment, the fastener is a bolt.

In some alternative embodiments, a main control board 18 is further disposed in the casing 10, where the main control board 18 is respectively in signal connection with the first contactor 30, the second contactor 40 and the air supply assembly 20, and the main control board 18 is used for controlling the opening and closing of the first contactor 30 and the second contactor 40, and also is used for controlling the starting and stopping of the air supply assembly 20.

The air supply assembly 20 may be appropriately designed according to actual needs, and in some alternative embodiments, the air supply assembly 20 includes two volutes 21 disposed in the housing 10, two wind wheels 22 correspondingly disposed in the volutes 21, and a motor 23 in driving connection with the wind wheels 22, where the volutes 21 are in one-to-one correspondence with the air channels 11. Of course, other types of blower arrangements may be used for the blower assembly 20, and are not limited to centrifugal blowers. In the present embodiment, the motor 23 is in signal connection with the main control board 18.

For ease of service, in some alternative embodiments, the first PTC heating assembly 12 and the second PTC heating assembly 13 are detachably disposed within the air tunnel 11 by threaded connections.

Referring to fig. 4, which is a cross-sectional view of another angle of the PTC electric heating air curtain machine with dual temperature control according to an embodiment of the present utility model, because the length of the air curtain to be covered is longer, in order to make the wind pressure at each position of the air curtain more uniform, in some alternative embodiments, the air outlet 111 of the air duct 11 is in a strip shape, two air deflectors 113 are disposed in the air duct 11, the two air deflectors 113 gradually approach two sides of the air outlet 111 of the air duct 11 in a direction from the air inlet 112 to the air outlet 111 of the air duct 11, the air deflectors 113 guide the air flow at the air inlet 112 to two sides of the air outlet 111, so as to avoid the situation that the wind pressure at the position where the air outlet 111 approaches the two sides is lower than the wind pressure at the middle position of the air outlet 111, which is beneficial to equalizing the wind pressure at each position of the air curtain.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A dual temperature control PTC electric heating air curtain machine comprising: the device comprises a shell, an air supply assembly, a first contactor and a second contactor;

2. A dual temperature control PTC electric heating air curtain machine according to claim 1, wherein: an air supply shell is arranged in the shell, the air duct is formed in the air supply shell, and the first contactor and the second contactor are arranged on the outer side of the air supply shell.

3. A dual temperature control PTC electric heating air curtain machine according to claim 2, wherein: the air supply shell comprises two fixing plates which are arranged side by side and three separation plates which are arranged between the two fixing plates, the air duct is formed between the two adjacent separation plates and the two fixing plates, and the first contactor and the second contactor are arranged on one fixing plate.

4. A dual temperature control PTC electric heating air curtain machine according to claim 3, wherein: the outside of air supply shell is provided with the mounting bracket, first contactor with the second contactor passes through the fastener detachably fastening on the mounting bracket.

5. A dual temperature control PTC electric air curtain machine according to any one of claims 1 to 4, wherein: and a main control board is further arranged in the shell and is respectively in signal connection with the first contactor, the second contactor and the air supply assembly.

6. A dual temperature control PTC electric air curtain machine according to any one of claims 1 to 4, wherein: the air supply assembly comprises two spiral cases arranged in the shell, two wind wheels correspondingly arranged in the spiral cases and a motor in transmission connection with the wind wheels, and the spiral cases are communicated with the air channels in a one-to-one correspondence mode.

7. A dual temperature control PTC electric air curtain machine according to any one of claims 1 to 4, wherein: the first PTC heating component and the second PTC heating component are detachably arranged in the air duct through threaded connectors.

8. A dual temperature control PTC electric air curtain machine according to any one of claims 1 to 4, wherein: the air outlet of the air duct is in a strip shape, two air deflectors are arranged in the air duct, and the two air deflectors are gradually close to two sides of the air outlet of the air duct in the direction from the air inlet to the air outlet of the air duct.