Heat exchange equipment structure and air conditioning unit

Abstract

The invention provides a heat exchange equipment structure and an air conditioning unit. The heat exchange equipment structure comprises a shell, a heat exchanger, a water pan and a filter screen, the water pan is arranged at the bottom of the heat exchanger and located above a rear air return opening, and an air return gap is reserved between the water pan and a front panel; and the air return path from the front air return port and the rear air return port to the heat exchanger is blocked. Air filtering of the front air return opening and the rear air return opening is achieved simultaneously through the single filter screen, and the problem that maintenance is complex due to the fact that filter screens need to be independently arranged for front air return and rear air return of a traditional air refrigerator is solved. Meanwhile, the air return clearance formed by the water pan and the front panel is matched with the position design of the filter screen, condensate water and dust are prevented from being condensed into hard blocks on the surface of the filter screen after being mixed, the blocking risk is reduced, and the air volume stability of long-term operation of the unit is kept.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to a heat exchange equipment structure and an air conditioning unit. Background Art

[0002] Traditional air-cooled cabinets, such as Figure 3 As shown, it is mainly composed of a fan (fan blades and motor), a heat exchanger 2 (specifically an evaporator component), a water tray, a front panel 11 (specifically including return air panel and other components), a rear panel 12 (specifically including rear cover and other components), etc., and these components are combined into a complete machine. There are two main ways to install the filter screen of the existing air cooling cabinet. One is to install it at the return air inlet on the front panel 11 (such as Figure 1 This installation method does not cause any problem when the unit only has the front return air function. Figure 2 Another way to install the filter is to install it on the front side of the evaporator (as shown in the figure). Figure 4 As shown in the figure, after a long period of use, dust and water are easily accumulated, and the water and dust mix and condense into hard lumps, which block the filter, thereby affecting the air intake of the unit and affecting the performance of the unit. Summary of the Invention

[0003] In order to solve the technical problem that the filter screen of the conventional wind-cooled refrigerator cannot take into account the front and rear return air vents, the present invention proposes a heat exchange equipment structure and an air-conditioning unit.

[0004] The technical solution adopted in the present invention is:

[0005] The present invention proposes a heat exchange equipment structure, comprising:

[0006] A housing, wherein the front panel of the housing is provided with a front return air vent, the rear panel is provided with a rear return air vent, and the upper portion is provided with an air outlet;

[0007] a heat exchanger, obliquely arranged between the front panel and the rear panel;

[0008] a water receiving tray, arranged at the bottom of the heat exchanger and located above the rear return air outlet, with a return air gap between the tray and the front panel;

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

[0010] In the first embodiment, the filter screen is obliquely arranged 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, a bracket structure for mounting the filter is provided on the left and right inner walls of the shell.

[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 of the upper end of the guide groove passes through the front return air inlet of the front panel, so that the filter can be directly inserted into the upper end of the guide groove from the front return air inlet and slide into the shell along the guide groove.

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

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

[0017] Furthermore, the area where the heat exchanger is projected onto the front panel overlaps with the area where the front return air outlet is provided.

[0018] Preferably, the heat exchange equipment is an air cooling cabinet.

[0019] The present invention also provides an air-conditioning unit, comprising the above-mentioned heat exchange device structure.

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

[0021] 1. A single filter simultaneously filters both front and rear return air vents, eliminating the maintenance complexity associated with traditional air-cooled cabinets, which require separate filters for both front and rear return air. Furthermore, the return air gap formed by the drain pan and the front panel, combined with the filter's position, prevents condensation from mixing with dust and forming lumps on the filter surface, reducing the risk of clogging and maintaining stable airflow throughout long-term operation.

[0022] 2. By providing a guide slot for filter installation, operators can push and pull the filter in and out through the front return air vent on the front panel, making it particularly suitable for installation environments with limited space. This structure also lowers the installation threshold, allowing even non-professionals to quickly replace the filter, while also shortening maintenance time and improving overall equipment reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 This is a schematic diagram of the return air path of the front return air outlet in the prior art;

[0025] Figure 2 This is a schematic diagram of the return air path of the rear return air outlet in the prior art;

[0026] Figure 3 It is a structural diagram in the prior art;

[0027] Figure 4 This is a structural diagram of the prior art in which the filter is installed close to the heat exchanger;

[0028] Figure 5 is a schematic structural diagram of an embodiment of the present invention;

[0029] Figure 6 This is a structural diagram of the installation direction of the filter screen in an embodiment of the present invention;

[0030] Figure 7 yes Figure 6 A local enlarged view of point A;

[0031] Figure 8 yes Figure 6 A partial enlarged view of point B;

[0032] Figure 9 2 is a schematic structural diagram of a guide groove in an embodiment of the present invention;

[0033] 1. Shell;

[0034] 11. Front panel;

[0035] 12. Rear panel;

[0036] 10. Air outlet;

[0037] 13. Guide groove;

[0038] 131, limit block;

[0039] 132, connecting piece;

[0040] 2. Heat exchanger;

[0041] 3. Water tray;

[0042] 4. Filter;

[0043] 5. Fan. DETAILED DESCRIPTION

[0044] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0045] The principle and structure of the present invention are described in detail below with reference to the accompanying drawings and embodiments.

[0046] The vast majority of air-cooled cabinet units on the market only have front return air functionality. These units are typically installed in industrial locations where air quality is poor and dusty. When the air conditioner is running, only the airflow circulates indoors, without fresh air entering the room, which can easily lead to air quality issues. Furthermore, since air-cooled cabinets are typically installed against a wall, the return air intake is located at the front, making installation flexibility difficult. Connecting an air duct on the front return air side is unsightly and requires more space. Therefore, this unit is designed with both front and rear return air functionality, improving installation flexibility and saving space. The rear return air intake also allows for the introduction of fresh air.

[0047] The filter in the prior art is generally installed on the front panel or the rear panel. If it is installed on the front return air panel, the filter on the front return air panel will lose its filtering effect if the unit uses the rear return air function.

[0048] In this regard, Figure 5 As shown (the right panel is hidden), the present invention proposes a heat exchange equipment structure, including: a shell 1, a heat exchanger 2, a water receiving tray 3 and a filter 4. Among them:

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

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

[0051] The water collecting pan 3 is arranged at the bottom of the heat exchanger 2 and is located above the rear return air outlet, with only a return air gap of a certain width left between it and the front panel 11. The return air path of the rear return air outlet is designed as follows: after the air enters from the rear return air outlet, it first moves horizontally along the lateral area between the bottom surface of the water collecting pan 3 and the inner bottom surface of the shell 1, then passes upward through the return air gap between the water collecting pan 3 and the front panel 11, and finally flows to the surface of the heat exchanger 2. The filter 4 is arranged to be located outside the projection range above the water collecting pan 3, but covers the entire return air path from the front and rear return air outlets to the heat exchanger 2. The filter 4 can be fixed to the inner wall of the shell 1 by a bracket structure such as a buckle or a slide rail to intercept dust particles in the incoming air. Since the filter 4 avoids the area directly above the water collecting pan 3, the condensed water on the surface of the heat exchanger 2 cannot drip directly onto the filter.

[0052] This structure simultaneously filters both front and rear return air vents through a single filter, eliminating the maintenance complexity associated with traditional air-cooled cabinets, which require separate filters for both front and rear return air. Furthermore, the return air gap formed by the drain pan and the front panel, combined with the filter's positioning, prevents condensation from mixing with dust and forming lumps on the filter surface, reducing the risk of clogging and maintaining stable airflow throughout long-term operation.

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

[0054] By confining the filter 4's tilted mounting position between the front panel 11 and the front edge of the water tray 3, a compact structure is achieved using limited space while also improving airflow uniformity through the tilt angle. This layout, combined with the heat exchanger's tilt, creates a more uniform airflow velocity distribution in the return air path, thereby improving overall heat exchange efficiency.

[0055] In the second embodiment, the filter is obliquely positioned between the front panel and the front edge of the water tray, extending toward the bottom of the housing. Specifically, the extension can be linear (or vertically downward), and can be in contact with or out of contact with the bottom of the housing. That is, when viewed from the side, it appears as an oblique line extending between the front panel and the bottom of the housing, close to the front edge of the water tray. The return air path formed by the rear return air outlet passes through the filter twice. This arrangement can enhance the filtering effect of the rear return air outlet path.

[0056] In this specific embodiment, bracket structures are provided on the left and right inner walls of the housing 1 to support the filter 4 and define its installation position. The bracket structures extend laterally or at an angle along the housing 1, matching the inclination angle of the filter 4 to form guide surfaces parallel to the surface of the filter 4. Because the bracket structures are provided on both inner walls of the housing 1, the installation space for the filter 4 is effectively confined to a specific area in the front-to-back direction of the housing 1, preventing obstruction of the return air path due to positional deviation.

[0057] For example, the support structure and the filter screen 4 can be connected by snaps or screws, or can be limitedly connected by a slide groove. The installation method is convenient for later disassembly, cleaning or replacement.

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

[0059] Preferably, if Figure 6 As shown, the bracket structure adopts the form of a guide groove 13 (or guide rail), which extends along the inner walls on the left and right sides of the shell 1. Its cross-sectional shape matches the side of the filter 4 to form a guiding fit. The filter 4 is embedded in the guide groove 13 by sliding, and can be freely moved along the guide groove 13. This sliding design allows the filter 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 shell 1 components. The sliding fit between the guide groove 13 and the side of the filter 4 ensures that the position of the filter 4 in the return air path always remains symmetrical. During the sliding process, the contact surface between the filter 4 and the guide groove 13 is designed as a low-friction structure (for example, adding balls to the inner wall of the guide groove, etc.) 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 (for example, the lower end of the guide groove is directly closed) to prevent the filter 4 from sliding excessively and deviating from the designed position.

[0060] By designing the bracket structure as a guide groove 13 and supporting the sliding of the filter 4, the heat exchanger's maintenance convenience is significantly improved. The sliding installation method reduces the labor intensity of replacing or cleaning the filter 4, making it particularly suitable for high-load operation scenarios that require regular maintenance. The guiding cooperation between the guide groove 13 and the filter 4 further ensures the stability of the return air flow path, reducing local airflow turbulence caused by installation errors.

[0061] In a further embodiment, a vertical extension of the upper end of the guide slot 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 4 to be inserted directly into the upper end of the guide slot 13 from the front return air vent opening and then slide along the guide slot 13 into the housing 1 to a desired position. During insertion, the sides of the filter 4 maintain sliding contact with the inner wall of the guide slot 13, preventing jamming due to lateral displacement.

[0062] This allows operators to push or pull the filter 4 in or 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 slot 13 to the front return air vent, maintenance operations on the heat exchanger are more intuitive and efficient. The insertion direction of the filter 4 aligns with the return air flow direction, minimizing interference with other components within the housing 1 during installation. This structure also lowers the installation threshold, allowing even 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, Figure 7 As shown, the side edge of the guide groove 13 near the bottom is equipped with a stopper 131 that mates with the front edge of the water tray 3. Stopper 131 overlaps the front outer edge of the water tray 3, forming a physical stop. This stopper constrains the bottom of the guide groove 13 to the front edge of the water tray 3, preventing the filter screen 4 from sinking or tilting due to loosening of the guide groove 13. Furthermore, the guide groove 13 can be conveniently installed directly on existing equipment without modifying or relocating the original structure of the housing 1.

[0064] In addition, a connection hole is also provided on the limit block 131 , and a screw is passed through the connection hole to be fixedly connected to the threaded hole of the connection seat provided on the inner wall of the shell 1 .

[0065] In a further embodiment, Figure 8 As shown, a connecting piece 132 is provided on the side of the guide slot 13. Connecting holes are formed in the connecting piece 132, which is screwed through the connecting hole to securely connect to the threaded hole on the inner wall of the housing 1. This screw connection significantly enhances the fixing strength of the guide slot 13 to the housing 1 while maintaining removability for later maintenance. The connecting piece 132 is integrally formed with the side of the guide slot 13 or secured by welding or riveting, and extends perpendicular to the guide slot 13.

[0066] By arranging 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 , and 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 outlet is set. This overlapping projection relationship allows the surface of the heat exchanger 2 and the front return air outlet to form a partially coplanar layout. Through the airflow guidance design, the air introduced by the front return air outlet 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 outlet, avoids airflow dead corners caused by layout misalignment, and improves heat exchange efficiency. It shortens the effective path of the airflow from the return air outlet to the heat exchanger 2, reduces the airflow kinetic energy loss, and thus improves the overall heat exchange performance of the heat exchanger 2.

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

[0070] In a preferred embodiment, the heat exchanger is an air-cooled cabinet. In this application scenario, the tilted installation of the filter 4 and the sliding structure of the guide groove 13 significantly improve maintenance convenience. The sliding design of the guide groove 13 eliminates the need to disassemble complex components for filter replacement, reducing maintenance costs. Furthermore, the fixed structure of the stopper 131 and the connecting piece 132 ensures the stability of the guide groove 13 in high-temperature and vibration environments, preventing the filter 4 from shifting due to thermal expansion and contraction.

[0071] By applying this structure to air-cooled cabinets, the heat exchanger achieves efficient heat dissipation and long-term reliability even under high-temperature conditions. The separation of the condensate collection path and the filter 4 prevents clogging caused by water-cement mixing, ensuring stable airflow and heat dissipation performance during long-term operation.

[0072] The present invention also provides an air-conditioning unit, comprising the above-mentioned heat exchange device structure. The air-conditioning unit can specifically be an air-cooling unit.

[0073] The heat exchanger structure described above allows a single filter to filter both the front and rear return air intakes, eliminating the maintenance complexity associated with traditional air-cooled cabinets, which require separate filters for both the front and rear return air intakes. Furthermore, the return air gap formed by the drain pan and the front panel, combined with the filter's position, prevents condensation from mixing with dust and forming lumps on the filter surface, reducing the risk of clogging and maintaining stable airflow throughout the unit's operation.

[0074] It should be noted that the terms used above are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" 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 of the parts and steps, the numerical expressions and the numerical values set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values should be interpreted as being merely exemplary and not as limiting. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0076] In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0077] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0078] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A heat exchange equipment structure, characterized in that: include: A housing, wherein the front panel of the housing is provided with a front return air vent, the rear panel is provided with a rear return air vent, and the upper portion is provided with an air outlet; a heat exchanger, obliquely arranged between the front panel and the rear panel; a water receiving tray, arranged at the bottom of the heat exchanger and located above the rear return air outlet, with a return air gap between the tray and the front panel; The filter screen blocks the return air path from the front return air inlet and the rear return air inlet to the heat exchanger, and avoids the water receiving area above the water receiving tray.

2. The heat exchange equipment structure according to claim 1, characterized in that: The filter screen is obliquely arranged between the front panel and the front edge of the water receiving tray.

3. The heat exchange equipment structure according to claim 1, characterized in that: The filter screen is obliquely arranged between the front panel and the front edge of the water receiving tray and extends toward the bottom surface of the shell.

4. The heat exchange equipment structure according to claim 1, characterized in that: A bracket structure for mounting the filter screen is provided on the left and right inner walls of the shell.

5. The heat exchange equipment structure according to 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 exchange equipment structure according to claim 5, characterized in that: The vertical extension line of the upper end of the guide groove passes through the front return air port of the front panel, so that the filter can be directly inserted into the upper end of the guide groove from the front return air port and slide into the shell along the guide groove.

7. The heat exchange equipment structure according to claim 5, characterized in that: A limiting block is provided on the side of the guide groove close to the bottom, and the limiting block is clamped on the front edge of the water receiving tray, so that the bottom of the guide groove is limited and close to the front outer edge of the water receiving tray.

8. The heat exchange equipment structure according to claim 5, characterized in that: A connecting piece is further provided on the side of the guide groove, and a connecting hole is provided on the connecting piece.

9. The heat exchange equipment structure according to claim 1, characterized in that: The area where the heat exchanger is projected onto the front panel overlaps with the area where the front return air outlet is provided.

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

11. An air conditioning unit, characterized in that: The heat exchange device comprises the structure according to any one of claims 1 to 10.

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