Heat recovery device for a refrigeration system

Abstract

The utility model discloses heat recovery device of refrigerating system relates to heat recovery technical field, including heat insulation board no. 1, heat preservation pad, drain valve and heat exchange cavity, the heat exchange box body of heat insulation board no. 1 one side setting, the one side of heat exchange box body is provided with assembly mechanism, heat exchange box body is covered to the heat conduction cavity and is handled through the heat insulation board no. 2 parallel setting of one side, according to the connecting place of heat exchange box body and heat insulation board no. 2 replacement corresponding ring pad according to use demand, the inside of heat exchange box body is provided with recovery mechanism, the recovery mechanism is heated to cold water through the heat exchange cavity of the inside setting of heat exchange box body and handles. The utility model discloses heat insulation board no. 2 through fastener and inner tooth pipe spare screw connection, form detachable mechanical interface. The lamination of sealing groove and heat exchange box body adopts elastic sealing ring, realizes dynamic sealing through compression deformation, and it is convenient to replace ring pad, according to use demand to the inside of heat conduction cavity is cleaned.

Description

Technical Field

[0001] This utility model relates to the field of heat recovery technology, specifically a heat recovery device for a refrigeration system. Background Technology

[0002] A refrigeration system generally consists of a refrigeration unit, a condenser, an evaporator, an expansion valve, etc., which are connected in series by refrigerant flow pipelines. Ammonia is a common refrigerant. During the operation of the refrigeration system, the refrigeration unit usually generates a large amount of heat energy.

[0003] However, most of the heat energy generated by refrigeration units currently in use is low-grade heat energy, which is difficult to utilize. The heat generated by the refrigeration system is generally discharged directly into the outside atmosphere through the condenser. This not only easily leads to the waste of heat energy, but also traditional heat recovery devices are mostly fixed by welding or flange bolts, and disassembly requires special tools, which increases the difficulty of cleaning the inside of the heat conduction cavity. Utility Model Content

[0004] The purpose of this invention is to provide a heat recovery device for a refrigeration system to solve the problems raised in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a heat recovery device for a refrigeration system, comprising a first insulation plate, a heat insulation pad, a drain valve, and a heat exchange chamber. A heat exchange box is provided on one side of the first insulation plate, and an assembly mechanism is provided on one side of the heat exchange box. The heat exchange box covers the heat conduction chamber through a second insulation plate arranged parallel to one side. The corresponding gaskets at the connection between the heat exchange box and the second insulation plate are replaced according to usage requirements. A recovery mechanism is provided inside the heat exchange box. The recovery mechanism heats the cold water through the heat exchange chamber inside the heat exchange box, and transfers and recovers heat through the heat of the refrigerant.

[0006] As a preferred technical solution, the assembly mechanism includes a second heat insulation plate, fasteners, insulation pads, internal threaded tubes, sealing grooves, and mating grooves. The outer side of the second heat insulation plate is threaded with fasteners, and the outer side of the fasteners is threaded with internal threaded tubes. Insulation pads are symmetrically arranged on one side of the second heat insulation plate, and mating grooves are connected to one side of the insulation pads. The mating grooves are symmetrically arranged on the outer side of the first heat insulation plate. A sealing groove is provided on one side of the second heat insulation plate, and the sealing groove fits against one side of the heat exchange box.

[0007] As a preferred technical solution, the insulation board is connected to one side of the insulation pad through symmetrically arranged docking grooves on the outer side.

[0008] As a preferred technical solution, the first insulation plate is connected to the outside of the fastener through internally threaded tubes symmetrically arranged on the outside, and the first insulation plate and the second insulation plate are arranged in parallel.

[0009] As a preferred technical solution, the recycling mechanism includes a heat exchange chamber, a heat conduction cavity, a feed pipe, a discharge pipe, a liquid injection valve, a liquid discharge valve, partition plates, and a heat exchange cavity. The heat exchange chamber has a heat conduction cavity on one side and a heat exchange cavity on the other side. A liquid injection valve is connected through one side of the heat exchange cavity, and a liquid discharge valve is connected through the other side. A feed pipe is connected to one side of the heat conduction cavity, and a discharge pipe is connected through the other side. Multiple sets of partition plates are arranged inside the heat exchange cavity.

[0010] As a preferred technical solution, the heat exchange box is connected to one side of the feed pipe and the discharge pipe through a heat-conducting cavity set inside.

[0011] As a preferred technical solution, the heat exchange box is connected to multiple sets of partition plates through an internally configured heat exchange cavity, and the multiple sets of partition plates are staggered inside the heat exchange cavity.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. The insulation plate of this utility model is connected to the internal threaded pipe fitting via fasteners to form a detachable mechanical interface. An elastic sealing ring is used at the contact point between the sealing groove and the heat exchange chamber, achieving dynamic sealing through compression deformation. This facilitates gasket replacement and allows for cleaning of the interior of the heat conduction cavity according to usage requirements. Combined with the buffering effect of the insulation pad, it enables quick disassembly, assembly, and sealing adjustment. The separation design between the heat exchange cavity and the heat conduction cavity, combined with the insulation effect of the insulation plate, reduces the impact of external temperature on heat recovery efficiency and improves heat transfer efficiency.

[0013] 2. This utility model uses the recovered refrigerant heat to heat cold water through a heat exchange chamber, which can be directly used for heating or process water, reducing boiler or electric heating energy consumption. Multiple sets of partition plates of the same size are staggered inside the heat exchange chamber to form a serpentine or swirling flow channel, which extends the refrigerant flow path and increases the heat exchange area. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present utility model; Figure 2 This is a schematic diagram of the recycling mechanism of this utility model; Figure 3 This is a schematic diagram of the assembly mechanism of this utility model; Figure 4 This is a side view of the heat exchanger box of this utility model. Figure 5 This is a schematic diagram of the insulation board of this utility model from two sides.

[0015] The components include: 1. Insulation plate one; 2. Insulation plate two; 3. Fasteners; 4. Insulation pad; 5. Internal threaded tube fittings; 6. Assembly mechanism; 7. Heat exchange box; 8. Heat conduction cavity; 9. Feed pipe; 10. Discharge pipe; 11. Recovery mechanism; 12. Injection valve; 13. Drain valve; 14. Sealing groove; 15. Partition plate; 16. Heat exchange cavity; 17. Connecting groove. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Example: Figures 1 to 5 As shown, this utility model provides the following technical solution: a heat recovery device for a refrigeration system, including a heat insulation plate 1, a heat insulation pad 4, a drain valve 13, and a heat exchange chamber 16. A heat exchange box 7 is provided on one side of the heat insulation plate 1, and an assembly mechanism 6 is provided on one side of the heat exchange box 7. The heat exchange box 7 covers the heat conduction chamber 8 through a heat insulation plate 2 arranged parallel to one side. The corresponding gaskets at the connection between the heat exchange box 7 and the heat insulation plate 2 are replaced according to the usage requirements. A recovery mechanism 11 is provided inside the heat exchange box 7. The recovery mechanism 11 heats the cold water through the heat exchange chamber 16 inside the heat exchange box 7, and the heat is transferred and recovered through the heat of the refrigerant.

[0018] like Figure 1 , Figure 2 and Figure 3 As shown, the assembly mechanism 6 includes a second heat insulation plate 2, fasteners 3, heat insulation pads 4, internal threaded tubes 5, sealing grooves 14, and mating grooves 17. The outer side of the second heat insulation plate 2 is threaded with fasteners 3, and the outer side of the fasteners 3 is threaded with internal threaded tubes 5. Heat insulation pads 4 are symmetrically arranged on one side of the second heat insulation plate 2, and mating grooves 17 are connected to one side of the heat insulation pads 4. The mating grooves 17 are symmetrically arranged on the outer side of the first heat insulation plate 1. The sealing grooves 14 are arranged on one side of the second heat insulation plate 2 and fit against one side of the heat exchange box 7. The first heat insulation plate 1 is connected to one side of the heat insulation pads 4 through the symmetrically arranged mating grooves 17 on its outer side. The first heat insulation plate 1 is connected to the outer side of the fasteners 3 through the symmetrically arranged internal threaded tubes 5 on its outer side. The first heat insulation plate 1 and the second heat insulation plate 2 are arranged parallel to each other.

[0019] Among them: rotating the fastener 3 counterclockwise, the internal threaded tube 5 has a tubular structure with internal threads, which cooperates with the fastener 3 to form a threaded connection, separating the insulation plate 2 and the internal threaded tube 5; simultaneously loosening the locking part between the insulation pad 4 and the docking groove 17, and using the locking between the docking groove 17 and the insulation pad 4 to achieve quick positioning. The insulation pad 4 is made of elastic material and can be embedded in the docking groove 17. Pre-tightening and fixing are achieved through the cooperation of the threaded fastener 3 and the internal threaded tube 5, which facilitates the maintenance of the equipment and the replacement of the sealing gasket.

[0020] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the recovery mechanism 11 includes a heat exchange chamber 7, a heat conduction cavity 8, a feed pipe 9, a discharge pipe 10, a liquid injection valve 12, a liquid discharge valve 13, partition plates 15, and a heat exchange cavity 16. The heat exchange chamber 7 has a heat conduction cavity 8 on one side and a heat exchange cavity 16 on the other side. A liquid injection valve 12 is connected through one side of the heat exchange cavity 16, and a liquid discharge valve 13 is connected through the other side. The feed pipe 9 is connected to one side of the heat conduction cavity 8, and the discharge pipe 10 is connected through the other side. Multiple sets of partition plates 15 are arranged inside the heat exchange cavity 16. The heat exchange chamber 7 is connected to one side of the feed pipe 9 and the discharge pipe 10 through the internally arranged heat conduction cavity 8. The heat exchange chamber 7 is connected to multiple sets of partition plates 15 through the internally arranged heat exchange cavity 16, and the multiple sets of partition plates 15 are staggered inside the heat exchange cavity 16.

[0021] Specifically, the partition plate 15 divides the heat exchange chamber 16 into multiple micro-channels, forming a "Z" or "S" shaped flow path, which significantly increases the heat exchange area. The refrigerant and cold water flow in opposite directions, maximizing the utilization of the temperature difference and improving the logarithmic average temperature difference. The high-temperature refrigerant enters the serpentine heat exchange chamber 16 from the injection valve 12 and flows in the channel formed by the partition plate 15. It transfers heat through the pipe wall to the cold water in the heat-conducting chamber 8 set on the other side of the heat exchange box 7, and uses the cold water to perform heat recovery treatment on the hot gas.

[0022] The working principle of this utility model is as follows: The compressor compresses the low-temperature, low-pressure refrigerant gas into a high-temperature, high-pressure gas. The high-temperature, high-pressure refrigerant enters the heat exchange chamber 16 through the feed pipe 9. The heat exchange chamber 16 is bends in a serpentine pattern to increase the heat exchange area. At the same time, cooling water is injected into the heat exchange chamber 16 using the liquid injection valve 12. The interior of the heat exchange chamber 16 is divided into equal-spaced sections by the equally spaced partition plates 15, thereby controlling the flow rate of the liquid. The liquid injection valve 12 controls the flow rate of the injected liquid and controls the efficiency of the liquid's heat absorption. The high-temperature gas is then cooled by the cooling water. The cooling water flows in the opposite direction to the refrigerant. The discharge valve 13 controls the rate at which the heat-absorbing liquid is discharged. The operator welds one side of the heat exchange chamber 16 to one side of the insulation plate 1, so that the insulation plate 1 seals one side of the heat exchange box 7. The heat conduction chamber 8 set on one side of the heat exchange box 7 contacts the mating groove 17 opened on one side of the insulation plate 2. The width of the groove 17 matches the thickness of the outer wall of the heat conduction chamber 8 to ensure an interference fit after insertion. At the same time, a fluororubber sealing ring is set at the bottom of the mating groove 17 to increase the sealing performance. The operator heat-presses the rectangularly distributed insulation pads 4 onto the outer side of the second insulation plate 2, ensuring that the insulation pads 4 are parallel to the mating grooves 17, aligning the rectangularly distributed mating grooves 17 with the insulation pads 4, and inserting the insulation pads 4 into the mating grooves 17. Simultaneously, the second insulation plate 2 is parallel to the first insulation plate 1, and the fasteners 3 are parallel to the internal threaded tube fittings 5, inserting the fasteners 3 into the internal threaded tube fittings 5. This ensures that the first insulation plate 1 contacts and locks onto the heat exchange box 7 located on one side. The operator can connect the feed pipe 9 to the output end of the gas injection pump that compresses the low-temperature and low-pressure refrigerant gas into high-temperature and high-pressure gas. The discharge pipe 10 will further cool the liquid refrigerant after condensation and the remaining other substances through the heat exchanger. The liquid that has absorbed heat will be discharged through the drain valve 13. Alternatively, it can be injected back into the heat exchange box 7 through the circulation pump as needed to heat the liquid a second time.

[0023] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A heat recovery device for a refrigeration system, characterized in that: It includes a heat insulation plate (1), a heat insulation pad (4), a drain valve (13), and a heat exchange chamber (16). A heat exchange box (7) is provided on one side of the heat insulation plate (1). An assembly mechanism (6) is provided on one side of the heat exchange box (7). The heat exchange box (7) covers the heat conduction chamber (8) through a heat insulation plate (2) arranged parallel to one side. The corresponding gaskets are replaced at the connection between the heat exchange box (7) and the heat insulation plate (2) according to the usage requirements. A recovery mechanism (11) is provided inside the heat exchange box (7). The recovery mechanism (11) heats the cold water through the heat exchange chamber (16) provided inside the heat exchange box (7) and transfers and recovers heat through the heat of the refrigerant.

2. The heat recovery device for the refrigeration system according to claim 1, characterized in that: The assembly mechanism (6) includes a second heat insulation plate (2), fasteners (3), heat insulation pads (4), internal threaded tubes (5), sealing grooves (14) and mating grooves (17). The outer side of the second heat insulation plate (2) is threaded with fasteners (3), and the outer side of the fasteners (3) is threaded with internal threaded tubes (5). The heat insulation pads (4) are symmetrically arranged on one side of the second heat insulation plate (2), and the mating grooves (17) are connected to one side of the heat insulation pads (4). The mating grooves (17) are symmetrically arranged on the outer side of the first heat insulation plate (1). The sealing grooves (14) are provided on one side of the second heat insulation plate (2), and the sealing grooves (14) are fitted to one side of the heat exchange box (7).

3. The heat recovery device for the refrigeration system according to claim 2, characterized in that: The insulation board (1) is connected to one side of the insulation pad (4) through the symmetrically arranged docking grooves (17) on the outside.

4. The heat recovery device for the refrigeration system according to claim 3, characterized in that: The first insulation plate (1) is connected to the outside of the fastener (3) through the internal threaded tube (5) symmetrically arranged on the outside. The first insulation plate (1) and the second insulation plate (2) are arranged in parallel.

5. The heat recovery device for the refrigeration system according to claim 1, characterized in that: The recycling mechanism (11) includes a heat exchange box (7), a heat conduction cavity (8), a feed pipe (9), a discharge pipe (10), a liquid injection valve (12), a liquid discharge valve (13), a partition plate (15), and a heat exchange cavity (16). The heat exchange box (7) has a heat conduction cavity (8) on one side and a heat exchange cavity (16) on the other side. The heat exchange cavity (16) has a liquid injection valve (12) connected through one side and a liquid discharge valve (13) connected through the other side. The heat conduction cavity (8) has a feed pipe (9) connected to one side and a discharge pipe (10) connected through the other side. Multiple partition plates (15) are arranged inside the heat exchange cavity (16).

6. The heat recovery device for the refrigeration system according to claim 5, characterized in that: The heat exchange box (7) is connected to one side of the feed pipe (9) and the discharge pipe (10) through the heat conduction cavity (8) set inside.

7. The heat recovery device for the refrigeration system according to claim 6, characterized in that: The heat exchange box (7) is connected to multiple sets of partition plates (15) through the heat exchange cavity (16) set inside, and the multiple sets of partition plates (15) are staggered inside the heat exchange cavity (16).

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