Direct expansion type air purification unit
By designing control components in the direct expansion air purifier unit, using electric push rods to drive the sliding plate and using springs and protrusions to slow down the movement speed, the problem of dust entering after the heat dissipation mesh is removed is solved, thus achieving equipment protection and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG OLEIRINA ENVIRONMENTAL TECH CO LTD
- Filing Date
- 2025-05-21
- Publication Date
- 2026-04-14
AI Technical Summary
Existing direct expansion air purifier units are prone to dust accumulation in exposed areas after the heat dissipation mesh is removed, which can damage internal components and pose safety hazards.
A control component was designed, including a movable plate, spring, support block, and shielding component. The movable plate is driven to slide by an electric push rod, the spring and protrusion are used to slow down the movement speed, and a sound-emitting ball is used to alert the operator, thereby protecting the exposed opening.
It effectively prevents dust from entering the unit, avoids safety hazards, and ensures the stability and safety of equipment operation.
Smart Images

Figure CN224121375U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of air purification unit technology, specifically a direct expansion air purification unit. Background Technology
[0002] Direct expansion air handling units mainly consist of two parts: an air handling unit and an air-cooled compressor-condenser unit. The two parts are directly connected by copper pipes, through which refrigerant flows. After the air is cooled by the evaporator, it undergoes a series of treatments before being delivered to the room. This series of products includes constant temperature and humidity, heating and cooling, and heat pump models. Constant temperature and humidity units can meet the needs of places with high temperature and humidity requirements, heating and cooling units can meet the needs of comfortable places, and heat pump units can serve two purposes in one unit, saving heating operating costs. They can be customized according to different usage needs and operating conditions.
[0003] Existing direct expansion air purifier units typically require a heat dissipation mesh to prevent dust accumulation and protect the equipment components. However, after prolonged use, the heat dissipation mesh needs to be removed and cleaned. After removal, the sides of the unit will be exposed, and dust can easily enter the unit from the exposed areas, causing damage to internal components. To address this issue, we propose a direct expansion air purifier unit. Utility Model Content
[0004] The purpose of this invention is to provide a direct expansion air purification unit to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a direct expansion air purification unit, comprising a unit body, a heat dissipation mesh disposed on the side of the unit body, and a cavity formed in the inner wall of the unit body, wherein a control component is disposed within the cavity, the control component comprising:
[0006] A movable plate, which is connected to a support block via a spring;
[0007] The shielding component is used to protect the unit body, thereby protecting the exposed openings while preventing safety hazards caused by excessive movement speed.
[0008] Preferably, the inner wall of the movable plate is fixedly connected to one end of the spring, and the other end of the spring is fixedly installed on the back of the support block. When the cut surface of the support block is no longer in contact, it can spring up under the action of the spring.
[0009] Preferably, the shielding member includes a support block, which is fixedly installed on the side of the support block. The support block is penetrated by a crossbar and slidably connected to the crossbar. The crossbar is fixedly installed on the inner wall of the movable plate. When the support block moves, the support block can make stable lateral movements along the surface of the crossbar.
[0010] Preferably, a baffle is fixedly installed at the bottom of the movable plate, the baffle is in contact with the inner wall of the unit body, the top of the movable plate is fixedly connected to the bottom of the electric push rod, and the electric push rod is fixedly installed on the inner wall of the cavity. When the electric push rod is subjected to force, it can push the movable plate and the baffle to move longitudinally synchronously.
[0011] Preferably, a protrusion is fixedly installed on the inner wall of the cavity, and a fixing plate is fixedly installed on the inner wall of the cavity. The protrusion in the cavity can slow down the movement speed of the moving plate.
[0012] Preferably, the top of the movable plate is fixedly connected to one end of the second spring, and the other end of the second spring is fixedly installed on the bottom of the pressure plate. When the pressure plate is no longer pressed, it can spring up from the surface of the movable plate under the action of the second spring.
[0013] Preferably, the side of the pressure plate is fitted with the inner wall of the cavity, the inner wall of the cavity is fitted with the side of the moving plate, and a sound-emitting ball is fixedly installed on the top of the moving plate. When the sound-emitting ball is squeezed, it can emit a sound to remind the operator.
[0014] Compared with the prior art, this utility model provides a direct expansion air purification unit, which has the following beneficial effects:
[0015] 1. This direct expansion air purifier unit is equipped with a control component. When the electric push rod pushes the moving plate to slide within the cavity, the baffle fixed at the bottom of the moving plate can move downwards simultaneously to cover the opening formed after the heat dissipation mesh is removed. At the same time, as the moving plate moves, the support block connected to the moving plate by a spring can move downwards simultaneously. When the protrusion fixed to the inner wall of the cavity abuts against the tangential surface of the support block, it can squeeze the support block multiple times, slowing down the moving speed of the moving plate. This can protect the exposed opening while avoiding safety hazards caused by excessive moving speed.
[0016] 2. This direct expansion air purifier unit is equipped with a baffle. When the moving plate lifts the baffle, the fixed plate fixed to the inner wall of the cavity touches the surface of the pressure plate. The pressure plate can then compress the spring. When the pressure plate is pressed, it can compress the sound-emitting ball, causing the ball to make a sound, thus reminding the operator that the baffle has been fully raised. Attached Figure Description
[0017] Figure 1 This is a front view structural diagram of the present invention;
[0018] Figure 2 This is a frontal cross-sectional view of the present invention.
[0019] Figure 3 This is a schematic diagram of the cavity structure of this utility model;
[0020] Figure 4 This is a schematic diagram of the control component structure of this utility model.
[0021] In the diagram: 1. Unit body; 2. Heat dissipation mesh; 3. Cavity; 4. Control components; 41. Moving plate; 42. Spring 1; 43. Support block; 44. Shielding component; 441. Support block; 442. Crossbar; 443. Baffle; 444. Electric push rod; 445. Protrusion; 446. Fixed plate; 447. Spring 2; 448. Pressure plate; 449. Sound-generating ball. Detailed Implementation
[0022] like Figures 1-4 As shown, this utility model provides a technical solution: a direct expansion air purifier unit, including a unit body 1, a heat dissipation mesh 2 on the side of the unit body 1, and a cavity 3 on the inner wall of the unit body 1. A control component 4 is installed in the cavity 3. The control component 4 includes: a moving plate 41, a spring 42, a support block 43, and a shielding member 44. When the moving plate 41 moves, the protrusion 445 fixed to the inner wall of the cavity 3 will abut against the cross surface of the support block 43. When the cross surface of the support block 43 is abutted, it can squeeze the spring 42. The support block 441 fixed to the surface of the support block 43 can slide laterally on the surface of the cross bar 442. When the support block 43 is squeezed multiple times, the moving speed of the moving plate 41 can be slowed down, thereby protecting the exposed opening while avoiding safety hazards caused by excessive moving speed.
[0023] The inner wall of the movable plate 41 is fixedly connected to one end of the spring 42, and the other end of the spring 42 is fixedly installed on the back of the support block 43. When the cross-section of the support block 43 is no longer in contact, it can spring up under the action of the spring 42. The blocking member 44 includes a support block 441, which is fixedly installed on the side of the support block 43. The support block 441 is penetrated by the crossbar 442 and slidably connected to the crossbar 442. The crossbar 442 is fixedly installed on the inner wall of the movable plate 41. When the support block 43 moves, the support block 441 can move laterally stably along the surface of the crossbar 442. A baffle 443 is fixedly installed at the bottom of the movable plate 41. The baffle 443 is in contact with the inner wall of the unit body 1. The top of the movable plate 41 is fixedly connected to the bottom of the electric push rod 444. The electric push rod 444 is fixedly installed on the inner wall of the cavity 3. When the electric push rod 444 is subjected to force, it can push the movable plate 41 and the baffle 443 to move longitudinally synchronously. A protrusion 445 is fixedly installed on the inner wall of cavity 3, and a fixing plate 446 is also fixedly installed on the inner wall of cavity 3. The protrusion 445 in cavity 3 can slow down the movement speed of moving plate 41. The top of moving plate 41 is fixedly connected to one end of spring 447, and the other end of spring 447 is fixedly installed on the bottom of pressure plate 448. When pressure plate 448 is no longer pressed, it can spring up from the surface of moving plate 41 under the action of spring 447. The side of pressure plate 448 is in contact with the inner wall of cavity 3, and the inner wall of cavity 3 is in contact with the side of moving plate 41. A sound-emitting ball 449 is fixedly installed on the top of moving plate 41. When the sound-emitting ball 449 is squeezed, it can emit a sound to remind the operator.
[0024] In this utility model, when the heat dissipation mesh 2 on the side of the unit body 1 needs to be cleaned of dust, the screws are removed with a screwdriver. After removal, the heat dissipation mesh 2 is taken out from the side of the unit body 1. After taking it out, the electric push rod 444 in the cavity 3 is activated. The electric push rod 444 pushes the moving plate 41 to move longitudinally. The baffle 443 fixed at the bottom of the moving plate 41 moves downward simultaneously to block the opening formed by removing the heat dissipation mesh 2. When the moving plate 41 moves, the protrusion 445 fixed on the inner wall of the cavity 3 will abut against the cross-section of the support block 43. When the cross-section of the support block 43 is abutted, the spring 42 can be squeezed. The support block 441 fixed on the surface of the support block 43 can slide laterally on the surface of the crossbar 442. When the support block 43 is squeezed repeatedly, the moving speed of the moving plate 41 can be slowed down, thereby protecting the exposed opening while avoiding safety hazards caused by excessive moving speed. After the heat dissipation mesh 2 is cleaned, it is installed on the side of the unit body 1 with bolts. After installation, the electric push rod 444 drives the moving plate 41 and the baffle 443 to rise. When the baffle 443 is raised to the bottom of the fixed plate 446, the fixed plate 446 will abut against the surface of the pressure plate 448. The pressure plate 448 can be pressed against the spring 447. When the pressure plate 448 is pressed, it can press the sound-emitting ball 449, causing the sound-emitting ball 449 to make a sound, thereby reminding the operator that the baffle 443 has been fully raised.
[0025] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.
Claims
1. A direct expansion air cleaning unit comprising a unit body (1), characterized in that: The side of the unit body (1) is provided with a heat dissipation net (2), the inner wall of the unit body (1) is provided with a cavity (3), the cavity (3) is provided with a control assembly (4), the control assembly (4) comprises: The moving plate (41) is connected with the supporting block (43) through the spring (42); The shielding piece (44) is used for protecting the unit body (1).
2. A direct expansion air handling unit as set forth in claim 1, further comprising: The inner wall of the moving plate (41) is fixedly connected with one end of the spring (42), and the other end of the spring (42) is fixedly installed on the back of the supporting block (43).
3. The direct expansion air handling unit of claim 1, wherein: The shielding piece (44) comprises a supporting block (441), the supporting block (441) is fixedly installed on the side of the supporting block (43), the supporting block (441) is penetrated by a cross rod (442) and is in sliding connection with the cross rod (442), and the cross rod (442) is fixedly installed on the inner wall of the moving plate (41).
4. The direct expansion air handling unit of claim 1, wherein: The bottom of the moving plate (41) is fixedly installed with a baffle (443), the baffle (443) is attached to the inner wall of the unit body (1), the top of the moving plate (41) is fixedly connected with the bottom of the electric push rod (444), and the electric push rod (444) is fixedly installed on the inner wall of the cavity (3).
5. A direct expansion air handling unit as set forth in claim 1, further comprising: The inner wall of the cavity (3) is fixedly installed with a protruding block (445), and the inner wall of the cavity (3) is fixedly installed with a fixed plate (446).
6. A direct expansion air handling unit as set forth in claim 1, further comprising: The top of the moving plate (41) is fixedly connected with one end of the spring (447), and the other end of the spring (447) is fixedly installed on the bottom of the pressing plate (448).
7. A direct expansion air handling unit as set forth in claim 6, wherein: The side of the pressing plate (448) is attached to the inner wall of the cavity (3), the inner wall of the cavity (3) is attached to the side of the moving plate (41), and the top of the moving plate (41) is fixedly installed with a sound emitting ball (449).