Reactor mounting structure for air source heat pump machine

Abstract

The utility model discloses an air source heat pump machine's electric reactor installation structure of air conditioning equipment field, including setting up the installation box of fan support side away from fan, be equipped with electric reactor in the installation box, the back of installation box is equipped with the air inlet grille, one side is equipped with the air outlet, the air inlet grille includes the end plate of left and right sides and is along the vertical direction interval and is equipped with a plurality of guide plates between two end plates, the guide plate is inclined to set up, and the inner end is higher than the outer end, and the inner end and the outer end of guide plate are equipped with the bending part that is bent upwards and downwards respectively, and the projection of the bending part of adjacent two guide plates is overlapped each other in horizontal direction. The utility model discloses utilize the guide plate of air inlet grille and the bending part of guide plate inner and outer two ends vertical setting to allow wind to pass through, and the rainwater plays the blocking effect simultaneously, to can satisfy the ventilation heat dissipation demand of electric reactor, can also avoid rainwater to enter electric reactor installation box, ensure the security of electric reactor operation.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning equipment, and in particular to a reactor installation structure for an air source heat pump. Background Technology

[0002] As a highly efficient and energy-saving heating / cooling device, the power system of an air source heat pump unit needs to address issues such as grid fluctuations, harmonic interference, and equipment protection. The inverter modules, rectifier circuits, and other power electronic components in air source heat pump units are prone to generating harmonics, leading to decreased equipment efficiency or damage to capacitor components. Reactors can suppress grid harmonics and improve power quality. Furthermore, the inverter system of an air source heat pump needs to rectify AC to DC and then invert it into AC with an adjustable frequency; reactors can stabilize circuit parameters during this process. Reactors also limit short-circuit current, playing a role in protecting equipment and improving system safety.

[0003] In existing air-source heat pump units, the reactor is typically installed inside the compressor side cavity, resulting in poor heat dissipation and occupying compressor installation space. To address these issues, patent document CN103822315B discloses an outdoor air conditioning unit that installs the reactor on the fan side. Air is drawn in from the rear of the unit through the evaporator, and the fan carries away the heat, achieving excellent heat dissipation while freeing up significant space in the compressor side cavity. However, since the equipment is located outdoors, rainwater can be drawn into the reactor terminals during rainy weather, posing a potential safety hazard. Utility Model Content

[0004] To overcome the shortcomings of existing reactor installation methods, such as poor rain protection, the technical problem to be solved by this utility model is to provide a reactor installation structure for an air source heat pump that can prevent rainwater from wetting the reactor.

[0005] The technical solution adopted by this utility model to solve its technical problem is: The reactor mounting structure of the air source heat pump includes a mounting box mounted on the fan bracket on the side away from the fan. The mounting box contains a reactor. The back of the mounting box has an air inlet grille, and the side has an air outlet. The air inlet grille includes end plates on the left and right sides and multiple guide plates spaced vertically between the two end plates. The guide plates are inclined, with the inner end higher than the outer end. The inner and outer ends of the guide plates are respectively provided with upward and downward bending portions. The horizontal projections of the bending portions at the near ends of two adjacent guide plates overlap each other.

[0006] Furthermore, the tilt angle of the guide plate is 45-60°.

[0007] Furthermore, the mounting box includes a main frame that is open at the top and back, with outwardly folded fixed walls on both sides of the back of the main frame. The end plates on both sides of the air inlet grille are mounted on the fixed walls, the reactor is mounted on the bottom plate of the main frame, and a cover plate is provided on the top of the main frame.

[0008] Furthermore, a first mounting wall is provided below the front end of the main frame, and a second mounting wall is provided above the front end of the cover plate. The mounting box is mounted on the fan bracket via the first mounting wall and the second mounting wall.

[0009] Furthermore, each of the air outlets on both sides of the main frame is provided with an exhaust duct, which is inclined downward and extends to both sides of the fan bracket.

[0010] Furthermore, the exhaust duct is installed on a fixed wall and pressed tightly against the side wall of the main frame by a cover plate.

[0011] Furthermore, the wires used to connect the reactor pass through the exhaust duct, the exhaust duct outlet edge is rolled, and the side wall near the outlet is provided with binding holes.

[0012] The beneficial effects of this utility model are: by setting an air inlet grille on the back of the reactor mounting box, the inclined guide plate on the air inlet grille and the vertically set bending parts at the inner and outer ends of the guide plate can allow air to pass through, while blocking rainwater. This can both meet the ventilation and heat dissipation requirements of the reactor and prevent rainwater from entering the reactor mounting box, thus ensuring the safe operation of the reactor. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the installation of this utility model inside an air source heat pump unit; Figure 2 This is an exploded view of the structure of this utility model; Figure 3 This is a side sectional view of the air intake grille of this utility model; Figure 4 This is a schematic diagram of the exhaust duct structure of this utility model.

[0014] The markings in the diagram are as follows: 1-mounting box, 2-reactor, 3-air inlet grille, 4-cover plate, 5-exhaust duct, 6-fan bracket, 7-fan, 11-main frame, 12-air outlet, 13-fixed wall, 14-first mounting wall, 31-end plate, 32-guide plate, 33-bending part, 41-second mounting wall, 51-rolled edge, 52-binding hole. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] It should be noted that if this utility model contains directional indicators such as up, down, left, right, front, and back, these terms are used to describe the relative positional relationships between components and are not specific references to the absolute positions of the components or the relationships between them. They are only used to explain the relative positional relationships and movement of the components in a specific posture. If the specific posture changes, the directional indicator will also change accordingly. If this utility model contains terms related to quantity such as "many," "multiple," or "several," these terms specifically refer to two or more.

[0017] like Figure 1 , Figure 2 As shown, the present invention provides a reactor mounting structure for an air source heat pump, including a mounting box 1 mounted on a fan bracket 6 on the side opposite to the fan 7. The mounting box 1 contains a reactor 2. The back of the mounting box 1 has an air inlet grille 3, and the side has an air outlet 12. The air inlet grille 3 includes left and right end plates 31 and multiple guide plates 32 spaced vertically between the two end plates 31. The guide plates 32 are inclined, with the inner end higher than the outer end. The inner and outer ends of the guide plates 32 are respectively provided with upward and downward bending portions 33. The horizontal projections of the bending portions 33 at the near ends of two adjacent guide plates 32 overlap. The mounting box 1 is located on the air inlet side of the fan 7. When the fan 7 rotates, the air flow direction is as follows... Figure 1 As shown, gas enters from the air inlet side at the back of the air source heat pump housing, then passes through the air inlet grille 3 into the mounting box 1, exits from the air outlet 12 on the side of the mounting box 1, and finally exits from the front of the air source heat pump housing, thereby achieving ventilation and heat dissipation for the reactor 2 inside the mounting box 1. To prevent rainwater from entering the mounting box 1 with the airflow on rainy days, this invention employs a special air inlet grille 3, such as... Figure 3 As shown, the inner end of the guide plate 32 is higher than the outer end. The inner end refers to the end closer to the inside of the mounting box 1. When rainwater reaches the air inlet grille 3, the projections of the bends 33 at the near ends of the two adjacent guide plates 32 overlap in the horizontal direction, so the rainwater cannot pass horizontally through the air inlet grille 3. At the same time, due to inertia, the rainwater turns a small angle and hits the guide plate 32 and the bends 33 when it enters the gap between the adjacent guide plates 32. It then flows outward along the guide plate 32 and does not enter the mounting box 1, thus ensuring the safety of the reactor 2.

[0018] When determining the tilt angle of the deflector 32, if the tilt angle is too large, it will affect the airflow, while if the tilt angle is too small, it will not be able to block rainwater sufficiently. According to multiple tests, setting the tilt angle of the deflector 32 to 45-60° can ensure ventilation while preventing rainwater from entering the mounting box 1 with the airflow.

[0019] To facilitate the installation of the air intake grille 3 and the reactor 2, such as Figure 2 As shown, the mounting box 1 includes a main frame 11 with an open top and back. The two sides of the back of the main frame 11 are provided with outwardly folded fixed walls 13. The end plates 31 on both sides of the air inlet grille 3 are installed on the fixed walls 13 by bolts. The reactor 2 is installed on the bottom plate of the main frame 11. The top of the main frame 11 is provided with a cover plate 4. The cover plate 4 is installed on the main frame 11 by screws or buckles after the air inlet grille 3 and the reactor 2 are installed.

[0020] In addition, to facilitate the installation of the entire mounting box 1 onto the fan bracket 6, a first mounting wall 14 is provided below the front end of the main frame 11, and a second mounting wall 41 is provided above the front end of the cover plate 4. Both the first mounting wall 14 and the second mounting wall 41 are provided with through holes for screws to pass through. The mounting box 1 is installed on the fan bracket 6 through the first mounting wall 14 and the second mounting wall 41.

[0021] Since rainwater can still enter the housing of the air source heat pump unit during rainy days, and the fan 7 may throw rainwater from the air outlet 12 into the mounting box 1 during rotation, a further solution is to provide an exhaust duct 5 at each of the air outlets 12 on both sides of the main frame 11. The exhaust duct 5 is connected to the air outlet 12, slopes downward, and extends to both sides of the fan bracket 6. The outlet of the exhaust duct 5 faces downward and is not obstructed by the fan bracket 6, ensuring that rainwater cannot enter the mounting box 1 from the outlet of the exhaust duct 5 when the fan 7 is rotating. At the same time, it can keep the outlet of the exhaust duct 5 in a low-pressure state, so that the gas enters the mounting box 1 from the air inlet grille 3 and is discharged from the outlet of the exhaust duct 5, thereby achieving ventilation and heat dissipation of the reactor 2.

[0022] To facilitate the installation of the exhaust duct 5, it can first be bolted to the fixed wall 13, and then pressed tightly against the side wall of the main frame 11 by the folded edge of the cover plate 4. Additionally, the exhaust duct 5 can also serve as a wiring channel for the conductors connecting the reactor 2, avoiding the need for drilling holes in the mounting box 1, thereby improving the waterproof performance of the mounting box 1. Figure 4 As shown, to prevent scratches on the reactor wiring harness, a rolled edge 51 is provided at the outlet edge of the exhaust duct 5 to increase the smooth transition of the edge. To prevent the wires from swaying in the wind, a bundling hole 52 for bundling the wiring harness is provided on the side wall near the outlet of the exhaust duct 5.

[0023] This utility model provides an air inlet grille 3 on the back of the mounting box 1 of the reactor 2. The guide plate 32 inclined on the air inlet grille 3 and the vertically arranged bending parts 33 at the inner and outer ends of the guide plate 32 allow air to pass through while blocking rainwater. This satisfies the ventilation and heat dissipation needs of the reactor 2 and prevents rainwater from entering the mounting box 1, ensuring the safe operation of the reactor 2. It has good practicality and application value.

Claims

1. A reactor mounting structure for an air source heat pump, comprising a mounting box (1) disposed on the side of a fan bracket (6) away from the fan (7), wherein a reactor (2) is disposed within the mounting box (1), characterized in that: The mounting box (1) has an air inlet grille (3) on the back and an air outlet (12) on the side. The air inlet grille (3) includes end plates (31) on the left and right sides and multiple guide plates (32) spaced vertically between the two end plates (31). The guide plates (32) are inclined and the inner end is higher than the outer end. The inner end and the outer end of the guide plate (32) are respectively provided with upward and downward bending parts (33). The projections of the bending parts (33) at the near ends of two adjacent guide plates (32) overlap each other in the horizontal direction.

2. The reactor mounting structure of the air source heat pump as described in claim 1, characterized in that: The tilt angle of the guide plate (32) is 45-60°.

3. The reactor mounting structure of the air source heat pump as described in claim 1, characterized in that: The mounting box (1) includes a main frame (11) with an open top and back. The main frame (11) has outwardly folded fixed walls (13) on both sides of the back. The end plates (31) on both sides of the air inlet grille (3) are mounted on the fixed walls (13). The reactor (2) is mounted on the bottom plate of the main frame (11). The top of the main frame (11) is provided with a cover plate (4).

4. The reactor mounting structure of the air source heat pump as described in claim 3, characterized in that: The main frame (11) has a first mounting wall (14) at the lower front end and a second mounting wall (41) at the upper front end. The mounting box (1) is mounted on the fan bracket (6) through the first mounting wall (14) and the second mounting wall (41).

5. The reactor mounting structure of the air source heat pump as described in claim 3, characterized in that: Each of the air outlets (12) on both sides of the main frame (11) is provided with an exhaust duct (5), which is inclined downward and extends to both sides of the fan bracket (6).

6. The reactor mounting structure of the air source heat pump as described in claim 5, characterized in that: The exhaust duct (5) is installed on the fixed wall (13) and pressed against the side wall of the main frame (11) by the cover plate (4).

7. The reactor mounting structure of the air source heat pump as described in claim 5, characterized in that: The wires used to connect the reactor (2) pass through the exhaust duct (5), the exhaust duct (5) has a rolled edge (51) at the outlet edge, and a binding hole (52) is provided on the side wall near the outlet.

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