Heat exchange device structure and air conditioning unit

Abstract

The utility model provides a kind of heat exchange equipment structure and air conditioning unit, heat exchange equipment structure includes: shell, heat exchanger, water pan and filter screen, water pan is set in the bottom of heat exchanger, and it is located above rear return air outlet, and return air gap is left between with front panel;Block in the return air path of front return air outlet and rear return air outlet to heat exchanger.The utility model realizes the air filtration of front, rear return air outlet simultaneously by single filter screen, solves the maintenance complex problem caused by the filter screen of traditional air-cooled cabinet due to front and rear return air needs to be separately set.Meanwhile, the position design of return air gap cooperation filter screen formed by water pan and front panel, avoid condensate water and dust mixed after condensation into hard block on filter screen surface, reduce the risk of blockage, maintain the air volume stability of unit long-term operation.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, specifically to a heat exchange equipment structure and an air conditioning unit. Background Technology

[0002] Traditional air-cooled cabinet air conditioners, such as Figure 3 As shown, it mainly consists of a fan (fan blades and motor), heat exchanger 2 (specifically, evaporator components), water tray, front panel 11 (including return air panel and other components), and rear panel 12 (including rear cover and other components), etc., which together form a complete unit. There are two main types of filter installation for existing air-cooled cabinets: one is installed at the return air vent on the front panel 11 (e.g., ...). Figure 1 As shown), this installation method has no problem when the unit only has a front return air function. However, if the unit uses a rear return air function (such as...), Figure 2 If the filter is installed on the front return air panel (as shown), it will lose its filtering function. Another way to install the filter is to install it on the front side of the evaporator (e.g., as shown). Figure 4 As shown in the image, after prolonged use, dust and water tend to accumulate, causing the water and dust to mix and condense into hard lumps that clog the filter screen, thus affecting the air intake of the unit and its performance. Utility Model Content

[0003] In order to solve the technical problem that the filter screen of the air-cooled cabinet cannot take into account both the front and rear return air inlets, this utility model proposes a heat exchange equipment structure and an air conditioning unit.

[0004] The technical solution adopted in this utility model is:

[0005] This utility model proposes a heat exchanger structure, including:

[0006] The housing has a front air return vent on the front panel, a rear air return vent on the rear panel, and an air outlet on the upper part.

[0007] The heat exchanger is inclinedly disposed between the front panel and the rear panel;

[0008] A water receiving tray is located at the bottom of the heat exchanger and above the rear return air inlet, with a return air gap between it and the front panel.

[0009] The filter screen blocks the return air path from the front and rear return air inlets to the heat exchanger and avoids the water collection area above the water collection tray.

[0010] In the first embodiment, the filter screen is inclinedly disposed between the front panel and the front edge of the water receiving tray.

[0011] In the second embodiment, the filter screen is obliquely disposed between the front panel and the front edge of the water receiving tray, and extends toward the bottom surface of the housing.

[0012] Furthermore, the inner walls on the left and right sides of the housing are provided with bracket structures for installing the filter screen.

[0013] Furthermore, the support structure is a guide groove, and the filter screen can slide along the guide groove.

[0014] Furthermore, the vertical extension line at the upper end of the guide groove passes through the front return air vent of the front panel, allowing the filter screen to be directly inserted from the front return air vent into the upper end of the guide groove and slide into the housing along the guide groove.

[0015] Furthermore, a limiting block is provided on the side of the guide channel near the bottom. The limiting block is engaged with the front edge of the water receiving tray, so that the bottom of the guide channel is limited and close to the front outer edge of the water receiving tray.

[0016] Furthermore, the side of the guide groove is provided with a connecting piece, and the connecting piece is provided with a connecting hole.

[0017] Furthermore, the area of ​​the heat exchanger projected onto the front panel overlaps with the area where the front return air vent is located.

[0018] Preferably, the heat exchange device is an air-cooled cabinet.

[0019] This utility model also proposes an air conditioning unit, including the above-mentioned heat exchange equipment structure.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] 1. By using a single filter to simultaneously filter air from both the front and rear return air vents, the complex maintenance issues caused by the need for separate filters for the front and rear return air in traditional air-cooled cabinets are resolved. Furthermore, the return air gap formed by the drip tray and the front panel, combined with the filter's position design, prevents condensation and dust from mixing and hardening on the filter surface, reducing the risk of blockage and maintaining stable airflow during long-term unit operation.

[0022] 2. By incorporating guide channels for filter installation, operators can push or pull the filter in or out through the front and return air vents on the front panel, making it particularly suitable for installation environments with limited space. This structure also lowers the installation threshold, allowing non-professionals to quickly replace the filter, while shortening maintenance time and improving the overall operational reliability of the equipment. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the return air path of the front return air inlet in the existing technology;

[0025] Figure 2 This is a schematic diagram of the return air path in the existing technology for the rear return air inlet;

[0026] Figure 3 This is a schematic diagram of the structure in the prior art;

[0027] Figure 4 This is a schematic diagram of a structure in the prior art where the filter screen is installed close to the heat exchanger;

[0028] Figure 5 This is a schematic diagram of the structure in an embodiment of the present utility model;

[0029] Figure 6 This is a structural schematic diagram of the filter screen installation direction in an embodiment of this utility model;

[0030] Figure 7 yes Figure 6 A magnified view of part A;

[0031] Figure 8 yes Figure 6 A magnified view of section B;

[0032] Figure 9 This is a schematic diagram of the guide groove structure in an embodiment of this utility model;

[0033] 1. Shell;

[0034] 11. Front panel;

[0035] 12. Rear panel;

[0036] 10. Air vent;

[0037] 13. Guide groove;

[0038] 131. Limit block;

[0039] 132. Connecting piece;

[0040] 2. Heat exchanger;

[0041] 3. Water drip tray;

[0042] 4. Filter screen;

[0043] 5. Fan. Detailed Implementation

[0044] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0045] The principle and structure of this utility model will be described in detail below with reference to the accompanying drawings and embodiments.

[0046] Most air-cooled air conditioning units on the market only have front return air functionality. Air-cooled units are typically installed in industrial environments where indoor air quality is poor and dusty. During operation, the air conditioning only circulates the existing indoor air, without introducing fresh air, easily leading to air quality problems. Furthermore, because air-cooled units are usually installed against a wall, with the return air vent at the front, installation flexibility is limited. Connecting the ductwork on the front return air side is aesthetically unappealing and requires more installation space. Therefore, this unit is designed with both front and rear return air functionality, improving installation flexibility, saving installation space, and also featuring a rear return air vent for introducing fresh air.

[0047] In existing technologies, filters are typically installed on the front or rear panel. If installed on the front return air panel, the filter on the front return air panel will lose its filtering function if the unit uses the rear return air function.

[0048] In this regard, such as Figure 5 As shown (right panel hidden), this utility model proposes a heat exchanger structure, including: a shell 1, a heat exchanger 2, a water receiving tray 3, and a filter screen 4. Wherein:

[0049] The front panel 11 of the housing 1 is provided with a front return air vent (corresponding to the front return air panel that can be opened and closed), the rear panel 12 is provided with a rear return air vent (corresponding to the rear return air panel that can be opened and closed), the upper part is provided with an air outlet 10, and a fan 5 that blows air out of the air outlet 10 is installed near the air outlet 10, and the inner cavity of the housing 1 forms an independent return air path.

[0050] The heat exchanger 2 is inclined between the front panel 11 and the rear panel 12, and its inclination angle can be adjusted according to the heat exchange requirements to achieve effective contact between the airflow and the surface of the heat exchanger 2.

[0051] The water collection tray 3 is located at the bottom of the heat exchanger 2, above the rear return air vent, with only a certain width of return air gap between it and the front panel 11. The return air path of the rear return air vent is designed as follows: after entering from the rear return air vent, the air first moves horizontally along the transverse area between the bottom surface of the water collection tray 3 and the inner bottom surface of the shell 1, then rises through the return air gap between the water collection tray 3 and the front panel 11, and finally flows to the surface of the heat exchanger 2. The filter screen 4 is positioned outside the projected area above the water collection tray 3, but covers the entire return air path from the front and rear return air vents to the heat exchanger 2. The filter screen 4 can be fixed to the inner wall of the shell 1 by a bracket structure such as clips or sliding rails to intercept dust particles in the incoming air. Because the filter screen 4 avoids the area directly above the water collection tray 3, condensate on the surface of the heat exchanger 2 cannot drip directly onto the filter screen.

[0052] This structure achieves air filtration for both the front and rear return air vents simultaneously through a single filter, solving the maintenance complexity problem caused by the need for separate filters for the front and rear return air in traditional air-cooled cabinets. Simultaneously, the return air gap formed by the condensate tray and the front panel, combined with the filter's position design, prevents condensate and dust from mixing and hardening on the filter surface, reducing the risk of blockage and maintaining stable airflow during long-term unit operation.

[0053] In the first embodiment, the filter screen is inclined between the front panel and the front edge of the water tray, aligning with the inclination direction of the heat exchanger 2 and forming an angle between the heat exchangers 2. This inclined arrangement optimizes dust adhesion distribution and avoids localized accumulation problems caused by vertical installation.

[0054] By limiting the inclined installation position of the filter screen 4 between the front panel 11 and the front edge of the drip tray 3, both structural compactness is achieved within the limited space, and airflow uniformity is improved through the tilt angle. This layout works in conjunction with the tilt direction of the heat exchanger to make the airflow velocity distribution in the return air path more uniform, thereby improving the overall heat exchange efficiency.

[0055] In the second embodiment, the filter screen is obliquely disposed between the front panel and the front edge of the drip tray, extending towards the bottom surface of the housing. Specifically, it can extend in a straight line (or vertically downwards), and can be in contact with or not in contact with the bottom surface of the housing. That is, viewed from the side, it appears as an oblique line between the front panel and the bottom plate of the housing, close to the front edge of the drip tray. The return air path formed by the rear return air vent will pass through this filter screen twice. This arrangement can enhance the filtration effect of the rear return air vent path.

[0056] In a specific embodiment, the inner walls of the left and right sides of the housing 1 are provided with support structures to support the filter screen 4 and define its installation position. The support structures extend laterally or laterally and obliquely along the housing 1, matching the tilt angle of the filter screen 4 to form a guide surface parallel to the surface of the filter screen 4. Since the support structures are set on the inner walls of the two sides of the housing 1, the installation space of the filter screen 4 is effectively limited to a specific area in the front-back direction of the housing 1, avoiding obstruction of the return air path due to positional displacement.

[0057] For example, the bracket structure and the filter screen 4 can be connected by clips or screws, or by a sliding groove for limiting connection. The installation method facilitates disassembly, cleaning or replacement later.

[0058] By incorporating a dedicated support structure on the inner walls of both sides of the housing 1, the installation stability and maintainability of the filter 4 are improved. The synergistic effect of the support structure and the inclined layout of the filter 4 further optimizes the airflow uniformity in the return air path, while providing reliable support for the long-term operation of the filter 4.

[0059] Preferably, such as Figure 6 As shown, the support structure adopts the form of guide groove 13 (or guide rail). Guide groove 13 extends along the inner walls of the left and right sides of the housing 1, and its cross-sectional shape matches the side of the filter screen 4, forming a guiding fit. The filter screen 4 is embedded in the guide groove 13 by sliding, realizing free movement along the guide groove 13. This sliding design allows the filter screen 4 to be pushed in or pulled out along the guide groove 13 during installation, and maintenance operations can be completed without completely disassembling the housing 1 components. Through the sliding fit between the guide groove 13 and the side of the filter screen 4, the position of the filter screen 4 in the return air path is always kept symmetrical. During the sliding process, the contact surface between the filter screen 4 and the guide groove 13 is designed with a low-friction structure (e.g., adding ball bearings to the inner wall of the guide groove) to avoid wear or jamming due to frequent operation. At the same time, a stop structure is provided at the end of the guide groove 13 (e.g., the lower end of the guide groove is directly closed) to prevent the filter screen 4 from sliding excessively and deviating from the designed position.

[0060] By designing the support structure as a guide channel 13 and supporting the sliding of the filter 4, the ease of maintenance of the heat exchange equipment is significantly improved. The sliding installation method reduces the labor intensity of replacing or cleaning the filter 4, and is especially suitable for high-load operation scenarios that require regular maintenance. The guiding cooperation between the guide channel 13 and the filter 4 further ensures the airflow stability of the return air path and reduces local airflow turbulence caused by installation errors.

[0061] In a further embodiment, the vertical extension line of the upper end of the guide groove 13 passes through the front return air vent of the front panel 11, forming a guide channel aligned with the front return air vent. This allows the filter screen 4 to be directly inserted into the upper end of the guide groove 13 from the opening of the front return air vent, and then slide along the guide groove 13 into the housing 1 to the designated position. During insertion, the side of the filter screen 4 maintains sliding contact with the inner wall of the guide groove 13 to avoid jamming due to lateral displacement.

[0062] This allows operators to push or pull the filter 4 in and out through the front return air vent without completely removing the front panel 11, making it particularly suitable for installation environments with limited space. By extending the upper end of the guide channel 13 to the front return air vent, maintenance of the heat exchanger becomes more intuitive and efficient. The insertion direction of the filter 4 is consistent with the airflow return direction, reducing interference with other components inside the housing 1 during installation. This structure also lowers the installation threshold, allowing non-professionals to quickly replace the filter 4, while shortening maintenance time and improving the overall operational reliability of the equipment.

[0063] In a further embodiment, such as Figure 7 As shown, a limiting block 131 matching the front edge of the water receiving tray 3 is provided on the side of the guide channel 13 near the bottom. The limiting block 131 overlaps with the outer front edge of the water receiving tray 3, forming a physical limiting relationship. This limiting structure constrains the bottom position of the guide channel 13 to the front edge of the water receiving tray 3, preventing the filter screen 4 from sinking or tilting due to loosening of the guide channel 13. Moreover, it is very convenient to directly install this guide channel 13 on the existing equipment, without modifying or relocating the original structure of the housing 1.

[0064] In addition, the limiting block 131 is also provided with a connecting hole, which is fixedly connected to the threaded hole of the connecting seat provided on the inner wall of the housing 1 by passing a screw through the connecting hole.

[0065] In a further embodiment, such as Figure 8 As shown, a connecting piece 132 is provided on the side of the guide groove 13. The connecting piece 132 has a connecting hole, and a screw is passed through the connecting hole to fix it to the threaded hole on the inner wall of the housing 1. The screw connection method significantly improves the fixing strength between the guide groove 13 and the housing 1, while retaining the disassembly capability for later maintenance. The connecting piece 132 is integrally formed with the side of the guide groove 13 or fixed by welding / riveting, and its extension direction is perpendicular to the guide groove 13.

[0066] By setting a connecting piece 132 with a connecting hole on the side of the guide groove 13 and fixing it with screws, a standardized disassembly and assembly interface is provided for subsequent maintenance, ensuring the installation accuracy of the filter screen 4 while extending the service life of the equipment.

[0067] like Figure 9As shown, the limiting block 131 and the connecting piece 132 are both arranged perpendicular to the length direction of the guide groove 13, and the limiting block 131 is arranged on the upper side of the guide groove 13, while the connecting piece 132 is arranged on the lower side of the guide groove 13.

[0068] In a specific embodiment, the projected area of ​​the heat exchanger 2 on the front panel 11 partially overlaps with the area where the front return air vent is located. This overlapping projection creates a partially coplanar layout between the surface of the heat exchanger 2 and the front return air vent. Through airflow guidance design, the air introduced by the front return air vent can flow directly along the surface of the heat exchanger 2, reducing local resistance in the return air path. This structure optimizes the spatial matching between the heat exchanger 2 and the return air vent, avoiding airflow dead zones caused by misalignment, while improving heat exchange efficiency. It shortens the effective path of airflow from the return air vent to the heat exchanger 2, reducing airflow kinetic energy loss, thereby improving the overall heat exchange performance of the heat exchanger 2.

[0069] By setting the projected area of ​​heat exchanger 2 to partially overlap with the front return air vent, the heat exchange equipment achieves a compact layout of the airflow path within a limited space.

[0070] In a preferred embodiment, the heat exchange device is an air-cooled cabinet. In air-cooled cabinet applications, the inclined installation of the filter screen 4 and the sliding structure of the guide channel 13 significantly improve maintenance convenience. The sliding design of the guide channel 13 allows for filter screen 4 replacement without disassembling complex components, reducing maintenance costs. Simultaneously, the fixing structure of the limiting block 131 and the connecting piece 132 ensures the stability of the guide channel 13 under high-temperature vibration environments, preventing the filter screen 4 from shifting due to thermal expansion and contraction.

[0071] By applying the above structure to the air-cooled cabinet, the heat exchange equipment achieves efficient heat dissipation and long-term reliability under high-temperature conditions. The separation structure between the condensate collection path and the filter screen 4 avoids the problem of water and ash mixing and clogging, ensuring that the air-cooled cabinet maintains stable airflow and heat dissipation performance during long-term operation.

[0072] This utility model also proposes an air conditioning unit, including the aforementioned heat exchange equipment structure. Specifically, the air conditioning unit can be an air-cooled unit.

[0073] The air conditioning unit, through the aforementioned heat exchange equipment structure, enables a single filter to simultaneously filter air from both the front and rear return air vents, solving the maintenance complexity issue caused by the need for separate filters for the front and rear return air in traditional air-cooled units. Simultaneously, the return air gap formed by the drip tray and the front panel, combined with the filter's position design, prevents condensate and dust from mixing and hardening on the filter surface, reducing the risk of blockage and maintaining stable airflow during long-term unit operation.

[0074] It should be noted that the terminology used above is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0075] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0076] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" 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 this utility model and simplifying the description. Unless otherwise stated, these directional terms 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, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0077] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, these terms have no special meaning and therefore should not be construed as limiting the scope of protection of this utility model. The above description is only a preferred embodiment of this utility model and is not intended to limit this utility model. For those skilled in the art, this utility model can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A heat exchanger structure, characterized in that, include: The housing has a front air return vent on the front panel, a rear air return vent on the rear panel, and an air outlet on the upper part. The heat exchanger is inclinedly disposed between the front panel and the rear panel; A water receiving tray is located at the bottom of the heat exchanger and above the rear return air inlet, with a return air gap between it and the front panel. The filter screen blocks the return air path from the front and rear return air inlets to the heat exchanger and avoids the water collection area above the water collection tray.

2. The heat exchanger structure as described in claim 1, characterized in that, The filter screen is inclinedly positioned between the front panel and the front edge of the water receiving tray.

3. The heat exchanger structure as described in claim 1, characterized in that, The filter screen is inclinedly disposed between the front panel and the front edge of the water receiving tray, and extends toward the bottom surface of the housing.

4. The heat exchanger structure as described in claim 1, characterized in that, The inner walls on the left and right sides of the housing are provided with bracket structures for installing the filter screen.

5. The heat exchanger structure as described in claim 4, characterized in that, The support structure is a guide groove, and the filter screen can slide along the guide groove.

6. The heat exchanger structure as described in claim 5, characterized in that, The vertical extension line at the upper end of the guide groove passes through the front return air vent of the front panel, allowing the filter screen to be directly inserted from the front return air vent into the upper end of the guide groove and slide into the housing along the guide groove.

7. The heat exchanger structure as described in claim 5, characterized in that, A limiting block is provided on the side of the guide channel near the bottom. The limiting block is locked on the front edge of the water receiving tray, so that the bottom of the guide channel is limited and close to the front outer edge of the water receiving tray.

8. The heat exchanger structure as described in claim 5, characterized in that, The guide groove is also provided with a connecting piece on its side, and the connecting piece is provided with a connecting hole.

9. The heat exchanger structure as described in claim 1, characterized in that, The area of ​​the heat exchanger projected onto the front panel overlaps with the area where the front return air vent is located.

10. The heat exchanger structure according to any one of claims 1 to 9, characterized in that, The heat exchange equipment is an air-cooled cabinet.

11. An air conditioning unit, characterized in that, Includes the heat exchanger structure as described in any one of claims 1 to 10.

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