Dual-system full-direct-current frequency conversion control assembly

Abstract

The utility model relates to the technical field of heat pumps, in particular to the field of commercial module machines of air source heat pumps, and particularly relates to a dual-system full-direct-current frequency conversion control assembly, which solves the problem that a large space is occupied or a plurality of electric control boxes are designed due to the problems of heat dissipation of components and the like, reduces the size of a control box assembly, is convenient to place in a unit, and is convenient to use. Comprising a control box internally provided with a cavity, a filtering fixing plate is arranged in the middle area of a back plate of the control box, and the front face of the filtering fixing plate is connected with a main control panel fixing plate through a supporting plate; heat dissipation air channels are arranged on the left side and the right side of the middle area of a back plate of the control box correspondingly, each heat dissipation air channel comprises a draught fan driving fixing plate, a compressor driving fixing plate and a heat dissipation fan fixing plate, and the draught fan driving fixing plates and the compressor driving fixing plates are fixed into the control box from top to bottom. The fan drive fixing plate, the compressor drive fixing plate and the back plate form a channel, and the cooling fan fixing plate is fixed to the lower end of the compressor drive fixing plate.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of heat pump, especially to the field of air source heat pump commercial module machine, specifically relates to a double system full direct current frequency conversion control assembly. BACKGROUND

[0002] The control assembly of full direct current frequency conversion type air source heat pump commercial module machine is usually to install multiple control components in a control box, these components including fan drive, compressor drive, reactor, main control board, UK1.5 terminal block, filter board, power terminal block and capacitor board etc. Due to the reasons of multiple components, component temperature rise requirement, wiring difficulty etc. of full direct current frequency conversion type air source heat pump commercial module machine control assembly, it usually occupies larger space or is designed into multiple electric control boxes, which leads to the problems of difficult layout of compressor, shell pipe, gas distribution, liquid accumulator etc. parts inside the unit, complicated wiring of workers, high production cost etc. INVENTION CONTENTS

[0003] The utility model provides a double system full direct current frequency conversion control assembly, solves the problem of occupying larger space or designing multiple electric control boxes caused by component heat dissipation problem etc., reduces the volume of control box assembly, and is convenient for placing inside the unit.

[0004] The utility model is realized through the following technical schemes:

[0005] A double system full direct current frequency conversion control assembly, including the control box of inside cavity, the middle area of the backboard of control box is equipped with filter fixed plate, the front surface of filter fixed plate is connected with main control board fixed plate through support plate;

[0006] The middle area of the backboard of control box is provided with heat dissipation air duct on both sides respectively, and the heat dissipation air duct includes fan drive fixed plate, compressor drive fixed plate and heat dissipation fan fixed plate, and the fan drive fixed plate and compressor drive fixed plate are fixed in the control box from top to bottom, and the fan drive fixed plate and compressor drive fixed plate form a passageway with the backboard, and the heat dissipation fan fixed plate is fixed at the lower end of compressor drive fixed plate, and the heat dissipation fan fixed plate is installed with heat dissipation fan;

[0007] The top and bottom of control box are provided with a plurality of heat dissipation holes at the position opposite to the heat dissipation air duct, and the bottom of control box is installed with reactor at the position of heat dissipation hole.

[0008] Further, the back surface of fan drive fixed plate and compressor drive fixed plate is equipped with aluminium plate radiator.

[0009] Further, the aluminium plate radiator includes a plurality of vertically distributed aluminium plate pieces, and the aluminium plate pieces are fixedly connected with the back surface of fan drive fixed plate and compressor drive fixed plate.

[0010] Further, the top outer side of the control box is fixed with a rain baffle which is distributed in an inclined manner.

[0011] Further, the fan drive fixing plate and the compressor drive fixing plate are fixed on the sheet metal in the control box through screws.

[0012] Further, the front end face of the control box is open, and the open end is provided with a box cover which is installed through a hinge.

[0013] The beneficial effects achieved by the utility model compared with the prior art are as follows:

[0014] 1. The components with low heat dissipation requirement are concentrated in the middle area of the control box, the filter fixing plate and the main control board fixing plate are designed in a layered manner, the components with high heat dissipation requirement are concentrated in the heat dissipation air duct positions on the left and right sides, heat dissipation is realized through the heat dissipation fan, the layered modular design can effectively reduce the volume of the control box assembly, the heat dissipation air duct design can accelerate heat dissipation, which is beneficial to heat dissipation in the control box and avoids product failure caused by temperature rise;

[0015] 2. The rain baffle can prevent rainwater from entering the control box, effectively protecting the performance failure of components caused by water entering;

[0016] 3. The aluminum plate part of the aluminum plate radiator is fixedly connected with the back surfaces of the fan drive fixing plate and the compressor drive fixing plate, can guide the heat of the fan drive and the compressor drive into the aluminum plate part, and greatly improves the heat dissipation effect by means of the air exhaust of the heat dissipation fan;

[0017] 4. The open end of the control box is provided with a box cover which is installed through a hinge, which is convenient for installation, wiring and after-sales maintenance of the unit. DRAWINGS

[0018] Figure 1 It is a perspective view of a double-system full-DC variable frequency control assembly of the utility model;

[0019] Figure 2 It is an exploded view of the utility model; Figure 1

[0020] Figure 3 It is a back view of the double-system full-DC variable frequency control assembly of the utility model without a control box;

[0021] In the drawing: 1, control box, 2, filter fixing plate, 3, main control board fixing plate, 4, fan drive fixing plate, 5, compressor drive fixing plate, 6, heat dissipation fan fixing plate, 7, heat dissipation fan, 8, heat dissipation hole, 9, aluminum plate radiator, 10, box cover, 11, rain baffle, 12, electric reactance group. CONCRETE IMPLEMENTATION

[0022] ​The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0023] In the description of the utility model, it should be understood that the terms "front", "rear", "up", "down", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0024] like Figures 1-3 As shown, this embodiment discloses a dual-system all-DC inverter control assembly, mainly including a control box 1. The control box 1 has a cuboid structure with an internal cavity. The control box 1 needs to house a fan drive, a compressor drive, a cooling fan, a reactor, a main control board, a terminal block (including power terminals and UK1.5 terminals), a filter board, and a capacitor board. To rationally allocate the components, components with low heat dissipation requirements are placed in the middle, such as the main control board, terminal block, filter board, and capacitor board, while components with high heat dissipation requirements are placed on both sides, such as the fan drive, compressor drive, and reactor. The specific scheme is as follows:

[0025] A filter mounting plate 2 is installed in the middle area of ​​the back panel of control box 1. A main control board mounting plate 3 is connected to the front of the filter mounting plate 2 via a support plate. The front of the filter mounting plate 2 is used to install the capacitor board and filter board, while the front of the main control board mounting plate 3 is used to install the main control board and terminal blocks. Components are arranged in layers according to their reliability, wiring sequence, and ease of maintenance. Each component is modularly designed for easy replacement.

[0026] Cooling ducts are provided on both the left and right sides of the middle area of ​​the back panel of control box 1. These ducts include a fan drive mounting plate 4, a compressor drive mounting plate 5, and a cooling fan mounting plate 6. The fan drive mounting plate 4 and compressor drive mounting plate 5 are fixed to the sheet metal inside control box 1 from top to bottom with screws. A gap is left between the fan drive mounting plate 4 and compressor drive mounting plate 5 and the back panel to form a channel. The cooling fan mounting plate 6 is fixed to the lower end of the compressor drive mounting plate 5, and a cooling fan 7 is installed on the cooling fan mounting plate 6. Multiple heat dissipation holes 8 are machined on the top and bottom of control box 1, directly opposite the cooling ducts. The reactor assembly 12 is mounted on the bottom of control box 1 at the heat dissipation hole positions via a bracket. With this design, when the cooling fan is working, the airflow can sequentially pass through the heat dissipation holes 8 and the cooling ducts for heat dissipation.

[0027] In order to further improve the heat dissipation effect, the back surface of the fan drive fixed plate 4 and the compressor drive fixed plate 5 is connected with an aluminum plate radiator 9. The aluminum plate radiator 9 comprises a plurality of vertically distributed aluminum plate pieces, which are fixedly connected with the back surface of the fan drive fixed plate 4 and the compressor drive fixed plate 5, can guide the heat generated by the compressor drive and the fan drive to the aluminum plate pieces, increase the contact area with air, and improve the heat dissipation effect. An inclined rain shield 11 is welded on the top outer side of the control box 1 to avoid rainwater and condensed water from splashing in. The front end surface of the control box 1 is open, and the open is provided with a box cover 10 which is installed through a hinge and has a left-right symmetrical door structure. Each door can be opened and closed by 120°, which is convenient for the installation of the unit, the connection and the after-sales maintenance.

[0028] Through the design of the utility model, the components with low heat dissipation requirement are concentrated in the middle area of the control box 1, the filter fixed plate 2 and the main control board fixed plate 3 are designed in layers, the components with high heat dissipation requirement are concentrated in the heat dissipation air duct positions on the left and right sides, and heat dissipation is realized through the heat dissipation fan. The layered modular design can effectively reduce the volume of the control box 1 assembly, facilitate the placement of the unit inside, the design of the heat dissipation air duct can accelerate the heat dissipation, is beneficial to the heat dissipation of the control box 1 inside, and avoids product failure caused by temperature rise.

Claims

1. A dual system all-direct current frequency conversion control assembly, comprising a control box with a cavity, characterized in that, a filter fixing plate is arranged in the middle region of the back plate of the control box, and the front surface of the filter fixing plate is connected with a main control board fixing plate through a support plate; heat dissipation air ducts are arranged on the left and right sides of the middle region of the back plate of the control box, the heat dissipation air ducts comprise a fan drive fixing plate, a compressor drive fixing plate and a heat dissipation fan fixing plate, the fan drive fixing plate and the compressor drive fixing plate are fixed in the control box from top to bottom, the fan drive fixing plate and the compressor drive fixing plate form channels with the back plate, the heat dissipation fan fixing plate is fixed at the lower end of the compressor drive fixing plate, and the heat dissipation fan fixing plate is installed with a heat dissipation fan; a plurality of heat dissipation holes are arranged on the top and bottom of the control box at positions opposite to the heat dissipation air ducts, and an electric reactor is installed on the bottom of the control box at the positions of the heat dissipation holes.

2. The dual system all-direct current variable frequency control assembly of claim 1, wherein, The back surfaces of the fan drive fixing plate and the compressor drive fixing plate are each provided with an aluminum plate radiator.

3. The dual system all-dc variable frequency control assembly of claim 2, wherein, The aluminum plate radiator comprises a plurality of vertically distributed aluminum plate pieces, and the aluminum plate pieces are fixedly connected with the back surfaces of the fan drive fixing plate and the compressor drive fixing plate.

4. The dual system all-dc variable frequency control assembly of claim 1, wherein, An inclined rain baffle is fixed on the outside of the top of the control box.

5. A dual system all-dc variable frequency control assembly according to any one of claims 1-4, characterized in that, The fan drive fixing plate and the compressor drive fixing plate are fixed on the sheet metal in the control box through screws.

6. A dual system all-dc variable frequency control assembly according to any one of claims 1-4, characterized in that, The front end surface of the control box is open, and the open part is installed with a box cover through a hinge.

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