Evaporative condenser comprising an upper sliding system for opening access covers
The upper sliding system for evaporative condensers addresses ergonomics and access issues by using sliding covers and rails, improving maintenance and cleaning efficiency.
Patent Information
- Application Number
- PCT/BR2025/050007
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2024-01-12
- Filing Date
- 2025-01-10
- Publication Date
- 2025-07-17
AI Technical Summary
Existing evaporative condenser systems face challenges with ergonomics during maintenance and cleaning due to tilting systems that require excessive operator effort and limited access, necessitating disassembly of fan panels for adequate access.
An upper sliding system with lower and upper sliding access covers that utilize rails, rollers, and support beams, allowing for easy, ergonomic access and full opening of the condenser interior, facilitated by manual, electrical, pneumatic, or hydraulic actuation.
Enhances operator ergonomics and access to the condenser interior, providing ease of maintenance and cleaning while maintaining structural stability and ventilation.
Smart Images

Figure BR2025050007_17072025_PF_FP_ABST
Abstract
Description
EVAPORATIVE CONDENSER COMPRISING AN UPPER SLIDING SYSTEM FOR OPENING ACCESS COVERS Technical Field
[0001] The present invention belongs to the field of mechanical engineering, more specifically characterized by machines, installations or refrigeration systems with several condenser circuits. Introduction
[0002] The present invention relates to an evaporative condenser with an upper sliding system, more specifically, an evaporative condenser comprising an upper sliding system for opening access covers comprising a plurality of mobile covers that move on rails. Fundamentals
[0003] Evaporative condensers are used to remove excess heat from a cooling system, where excess heat is removed by evaporating water. Gas or vapor is passed through a system of tubes lined with water. As the water evaporates, it removes heat from the gas or vapor, causing it to condense into a liquid.
[0004] Evaporative condensers are essential for industries across a variety of sectors, including chemical, food, steel, foundry, and plastics, among others. Their cooling system controls the temperature to make the process more efficient and prevent potential damage to industrial equipment.
[0005] To carry out maintenance and cleaning of evaporative condensers it is necessary to have access to the upper part of the condenser, and the solution widely used today is to open the covers using the system tilting device with piston to help with support.
[0006] For the operator to access the inside of the condenser using the tilting system, where the fans are fixed to the top of the tilting lids, it is necessary to squat initially and then slowly lift the lid, which causes the excessive weight of the fan that is fixed to the lid to generate excessive effort for the operator who is handling the lid.
[0007] Furthermore, the tilting system also limits access for cleaning and internal maintenance of the condenser, as its opening is limited by the opening angle. Additionally, to allow better access to the internal area of the condenser, it is necessary to disassemble the fan panel and remove it from its location.
[0008] Finally, it is desirable that access to the evaporative condenser covers is easy and provides good ergonomics for the operator. State of the art
[0009] Known prior art solutions for evaporative condenser cover systems of the nature discussed here can be verified in prior art documents such as Chinese document CN 114340341, entitled "Cabinet Air Conditioning and Cabinet Temperature Control System", which presents an electrical control device that can be overhauled directly from the electrical control overhaul opening, and when the evaporation fan assembly needs to be maintained, the electrical control device can penetrate through the electrical control overhaul opening, meanwhile, during normal work, the electrical control device plays a role in blocking the wind and improving the sealing performance of the air duct, and the air outlet of the evaporation fan assembly is prevented from flowing in other directions, so that the efficiency cooling of the air conditioning cabinet is ensured.
[0010] Document CN 114340341, despite presenting an electrical control device with sliding covers, reveals the use of only two covers, where the fans are fixed to the upper part of only one cover and does not mention the fixation through threaded handles, nor the use of the locking support and covers that slide over each other in a telescopic sliding system.
[0011] Another patent document whose solution may be mentioned is CN 210718187, entitled "Refrigeration System Unit," which relates to a refrigeration system unit comprising an installation base frame, a first, a second, a third, and a fourth sliding connection structure. The wet-film pre-cooling structure is used to pre-cool and cool the heating element in the installation space. The wet-film pre-cooling structure is provided with a second sliding connection structure, and the wet-film pre-cooling structure is detachably mounted to the installation base frame in a sliding manner through the sliding connection matching effect of the second sliding connection structure and the first sliding connection structure.
[0012] However, document CN 210718187 discloses a solution with vertical sliding doors, without the coupling of fans. This document does not describe the use of an upper sliding system comprising at least an upper cover and a lower cover, in which the covers contain rollers that allow the covers to slide along the rails, which are fixed to the support beams, in which the covers are fixed by means of threaded handles, the locking bracket, and in which the covers slide over each other. in a telescopic sliding system.
[0013] Finally, it is worth mentioning that several prior art solutions can be verified in other patent documents such as document CN 218722420. In this document, differences in relation to the proposed solution are also identified, in addition to disadvantages already described for the aforementioned documents.
[0014] The state of the art does not provide simple solutions that allow better ergonomics for the operator and better access to the evaporative condenser.
[0015] There is, therefore, space for an evaporative condenser comprising an upper sliding system for opening access covers, which: a) allows greater ease of operation; b) allows greater ergonomics for the operator during the condenser maintenance and cleaning process; c) allows internal ventilation of the condenser; and d) allows full opening for access to the interior of the condenser for operator access. Objectives of the invention
[0016] The aim of the invention is therefore to provide an evaporative condenser comprising an upper sliding system, in accordance with the features of claim 1 of the attached claim table.
[0017] Other characteristics and details of the characteristics are represented by dependent claims. Description of figures
[0018] For better understanding and visualization of the object of the present invention, it will now be described with reference to the attached figures, representing the functional improvement obtained, in which: Figure 1: shows an image of an evaporative condenser with the solution presented in the state of the art, according to the present invention; Figure 2: shows an image of an evaporative condenser comprising an upper sliding system for opening evaporative condenser access covers, according to the present invention; Figure 3: shows an enlarged perspective view of the evaporative condenser in Figure 2; Figure 4: shows a perspective view of an upper sliding system for opening evaporative condenser access covers, according to the present invention; Figure 5: shows a perspective view of the upper sliding system of Figure 4, with an open access cover; Figure 5a: shows an enlarged perspective view of the upper sliding system in Figure 5, highlighting the support for the access covers; Figure 6: shows a rear perspective view of the upper sliding system of Figure 4, with detail A; Figure 6A: shows a rear perspective view of detail A in Figure 6; Figure 7: shows an enlarged side view of the upper sliding system in Figure 4, highlighting its tracks; Figure 8: presents an enlarged perspective view of the upper sliding system of Figure 4, highlighting the internal details of its tracks. Detailed Description of the Invention
[0019] The following detailed description refers to the accompanying drawings, which illustrate, by way of non-limiting illustration, embodiments of the present invention. These embodiments are described to allow a person skilled in the art to reproduce their results. Other embodiments resulting from structural, mechanical, logical, electrical, and electronic changes are possible and may be implemented without departing from the spirit and scope of the present invention. The following detailed description should therefore not be construed as restrictive or limiting.
[0020] The evaporative condenser (100) comprising an upper sliding system for opening sliding access covers (110, 120), according to the present invention, comprises at least one, preferably two or more lower sliding access covers (110) and at least one upper sliding access cover (120) comprising at least one fan (190) installed in its upper region, at least one pair of internal rails (130) for the at least one lower sliding access cover (110), at least one pair of external rails (135) for the at least one upper sliding access cover (120), in addition to support beams (140) supporting the pairs of rails (130, 135), a plurality of rollers (150) fixed to at least two pairs of supports of the lower covers (160),attached to each of the lower sliding access covers (110) and to at least two pairs of upper cover brackets (165) attached to the upper sliding access cover (120).,
[0021] The lower sliding access covers (110), in turn, are preferably symmetrical and have the same appearance and functionality as each other.
[0022] The combination of the lower sliding access covers (110) with at least one upper sliding access cover (120) comprising at least one fan (190) provides a practical and efficient solution for upper access to the evaporative condenser (100).
[0023] It should be noted that the lower sliding access covers (110) have a difference in height in relation to the upper sliding access cover (120). This difference is intended to allow the lower sliding access covers (110) to slide underneath the upper sliding access cover (120), whereby this sliding, partial or total, frees up a gap of variable size that allows access to the interior of the evaporative condenser (100).
[0024] In the context of the present invention the term "height difference" refers to a difference between the vertical distances between the opposite faces of the sliding access covers (110, 120).
[0025] Preferably, the lower sliding access covers (110) slide underneath the upper sliding access cover (120) due to the difference in height or vertical dimension between the pairs of supports of the lower covers (160) and the pairs of supports of the upper cover (165), wherein this difference in height should preferably be greater than the height of the lower sliding access covers (110).
[0026] Preferably, the length of the upper sliding access cover (120) should be equal to or greater than the sum of the length of the lower sliding access covers (110), so that the lower sliding access covers (110) can be slid completely underneath the upper sliding access cover (120), whereby this sliding, partial or total, frees up an access gap of variable size, enabling access to the interior of the evaporative condenser (100).
[0027] It should also be noted that there may be one or more lower sliding access covers (110) interspersed with one or more upper sliding access covers (120), depending on the design specifications and dimensions of the equipment. Preferably, the lengths of the sliding access covers (110, 120) should be chosen in a similar manner as described for the non-limiting example of two lower sliding access covers (110) in combination with an upper sliding access cover (120).
[0028] In a non-limiting example of the present invention, it is possible that the evaporative condenser (100) comprises a set of interchangeable sliding access covers (110, 120), wherein the arrangement of the upper sliding access covers (120) and the lower sliding access covers (110) can be freely modified.
[0029] In a non-limiting example of the present invention, a system comprising three upper sliding access covers (120) and two lower sliding access covers (110) can be converted to a system comprising one upper sliding access cover (120) and four lower sliding access covers (110) by moving two upper sliding access covers (120) to the bottom row.
[0030] Whichever arrangement is chosen, the fan (190) or fans (190) will always be installed in the upper sliding access covers (120).
[0031] The lower sliding access covers (110) are attached to at least two pairs of lower cover supports (160) that slide underneath at least one upper sliding access cover (120) that is in turn attached to at least two pairs of upper cover supports (165), thus allowing access to the interior of the evaporative condenser (100). through one or more uncovered gaps in the evaporative condenser (100), with the user or operator being responsible for sliding the sliding access covers (110, 120) fully or partially, as in a telescopic sliding system.
[0032] The rail system comprises at least one pair of inner rails (130) for the lower sliding access covers (110) and at least one pair of outer rails (135) for at least one upper sliding access cover (120).
[0033] It should be noted that the rail system may comprise more than two pairs of rails (130, 135) for, for example and without limiting the invention, the installation of other covers or additional equipment.
[0034] The actuation of the lower sliding access covers (110) and the upper sliding access cover (120) may be, preferably, but without limiting the invention, manually, and may also be electrical, pneumatic or hydraulic, using, for example and without limiting the invention, a transmission via chains, belts, pinion / rack or other similar mechanism appropriate for the application.
[0035] The support beams (140), also known as support beams or support beams, are structural parts used in the support and stability of the structure of the upper sliding system for opening the sliding access covers (110, 120). These support beams (140) are designed to resist vertical and / or horizontal loads and distribute them efficiently so that the structure remains stable and safe.
[0036] The rollers (150) are attached to at least two pairs of lower cover supports (160) attached to each of the lower sliding access covers (110), wherein the rollers (150) of the pairs of lower cover supports (160) slide on the pair of inner tracks (130).
[0037] The rollers (150) are also attached to at least two pairs of top cover supports (165) attached to the upper sliding access cover (120), wherein the rollers (150) of the pairs of top cover supports (165) slide on the pair of outer tracks (135).
[0038] Alternatively, without prejudice to the invention, the rollers (150) may be fixed to the rails (130, 135), instead of being fixed to the supports (160, 165). In this way, the sliding access covers (110, 120), which would be free of rollers (150), would slide along the rollers (150) of the rails (130, 135).
[0039] As explained above, the rail assembly comprises at least one pair of inner rails (130) for the at least one lower sliding access cover (110) and at least one pair of outer rails (135) for the at least one upper sliding access cover (120), the pairs of rails (130, 135) being fixed to the support rails (140).
[0040] After the maintenance of the evaporative condenser (100) is completed, the sliding access covers (110, 120) will be fixed to the support beams (140) using fastening and locking elements (170), which comprise fastening or locking elements known from the state of the art such as, for example, but without limiting the invention, handles (171) threaded into supports (172) and / or holes with internal threads fixed and / or drilled in one or more static and fixed parts of the structure of the evaporative condenser (100).
[0041] It should be noted that the fixing and locking of the sliding access covers (110, 120) in their working position can be done in any usual manner known in the prior art.
[0042] Furthermore, it is possible to provide the fastening and locking elements (170) in such a way that it is possible to lock the sliding access covers (110, 120) in more than one position other than fully closed, to prevent them from the sliding access covers (110, 120) from accidentally sliding off during maintenance of the evaporative condenser (100).
[0043] In other words, it is possible for the sliding access covers (110, 120) to be in a half-open or fully open position, in which case the sliding access covers (110, 120) may be prevented from involuntary movement by means of fastening and locking elements (170), such as latches and pins.
[0044] The lower sliding access cover (110) and the upper sliding access cover (120) can be constructed with different materials, according to the need and application, such as, but without limiting the invention, with galvanized steel sheets, stainless steel sheets, aluminum sheets, polymers, or any other material that has appropriate rigidity.
[0045] The electrical wiring that powers the fan (190) can pass through the support beams (140) and through passage channels (not shown in the figures) comprised of the upper sliding system.
[0046] It should be noted that the manual movement solution is preferably used to promote the sliding translation of the sliding access covers (110, 120) of the present invention. However, the sliding translation of the sliding access covers (110, 120) of the present invention may occur through the use of other solutions, such as, in non-limiting examples of the present invention, by means of a motorized system, with a direct or alternating current motor, pneumatic or hydraulic system and other movement solutions suitable for the application, with transmission through chains, belts or rack and pinion and other transmission solutions suitable for the application. Conclusion
[0047] As can be inferred from the description above, the object, according to the present invention, surpasses the solutions provided by the state of the art, being an object, perfectly susceptible to industrial application, which presents novelty and inventive step.
Claims
CLAIMS 1. Evaporative condenser comprising an upper sliding system for opening access covers, characterized in that the upper sliding system comprises at least one, preferably two or more lower sliding access covers (110) and at least one upper sliding access cover (120) comprising at least one fan (190) installed in its upper region.
2. Evaporative condenser comprising an upper sliding system for opening access covers, according to claim 1, characterized in that the upper sliding system additionally comprises at least one pair of internal rails (130) and at least one pair of external rails (135).
3. Evaporative condenser comprising an upper sliding system for opening access covers, according to claim 2, characterized in that the upper sliding system additionally comprises a plurality of support rails (140) that support the pairs of rails (130, 135), a plurality of rollers (150) fixed to at least two pairs of lower cover supports (160), fixed to the lower sliding access cover (110) and to at least two pairs of upper cover supports (165) fixed to the upper sliding access cover (120).
4. Evaporative condenser comprising an upper sliding system for opening access covers, according to claim 3, characterized in that the difference in height or vertical dimension between the pairs of supports of the lower covers (160) and the pairs of supports of the upper cover (165) is greater than the height of the lower sliding access covers (110).
5. Evaporative condenser comprising an upper sliding system for opening access covers, according to claim 3, characterized in that the sliding access covers (110, 120) are fixed to the support beams (140) by means of a plurality of fastening and locking elements (170).
6. Evaporative condenser comprising an upper sliding system for opening access covers, according to claim 1, characterized in that the actuation of the lower sliding access covers (110) and the upper sliding access cover (120) is done manually, electrically, pneumatically or hydraulically, with a transmission via chains, belts or rack and pinion.
Citation Information
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