CN211120129U

CN211120129U - Dry shell and tube evaporator

Info

Publication number: CN211120129U
Application number: CN201921517931.3U
Authority: CN
Inventors: 宁静红
Original assignee: Tianjin University of Commerce
Current assignee: Tianjin University of Commerce
Priority date: 2019-09-12
Filing date: 2019-09-12
Publication date: 2020-07-28
Anticipated expiration: 2029-09-12

Abstract

The utility model discloses a dry-type shell and tube evaporator, including the barrel of taking the secondary refrigerant business turn over pipe, gear box and the open heat exchange tube in a plurality of both ends of tube sheet parallel arrangement in the barrel through both ends, the gear box all has the head with the tube sheet outside, thereby both ends form first cavity and second cavity, first cavity forms the epicoele by the baffle, the cavity of resorption, the epicoele connects refrigerant feed liquor pipe and outlet duct respectively with the cavity of resorption, the second cavity connects the trachea, heat exchange tube one end stretches into the epicoele through the gear box, the cavity of resorption, the other end stretches into the second cavity, heat exchange tube facial make-up gear, stretch into the epicoele, gear meshes respectively and lies in the gear box on the heat exchange tube of cavity of resorption respectively, stretch into the epicoele, gear and actuating mechanism driven driving gear meshing are in. The utility model discloses utilize the heat exchange tube rotatory, under the centrifugal force effect, liquid is attached to the heat exchange tube inner wall all the time in the heat exchange tube, strengthens the heat transfer effect of refrigerant and the outside of tubes secondary refrigerant in the heat exchange tube.

Description

Dry shell and tube evaporator

Technical Field

The utility model relates to a refrigeration air conditioning system technical field, concretely relates to refrigeration air conditioning system's high-efficient dry-type shell and tube evaporator.

Background

The refrigerating air-conditioning system is characterized in that the refrigerating air-conditioning system is provided with a refrigerating system, a refrigerating system is arranged in the refrigerating system, a refrigerating compressor is arranged in the refrigerating system, a refrigerating fluid is filled in the refrigerating system, and the refrigerating system is communicated with the refrigerating system.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the technical defect who exists among the prior art, provide a high-efficient dry-type shell and tube evaporator of refrigeration air conditioning system to the high-efficient heat transfer of solving the evaporimeter realizes that refrigerating system's performance improves, the energy saving.

The utility model provides a technical scheme that its technical problem adopted is:

a dry shell-and-tube evaporator comprises a cylinder body with a secondary refrigerant inlet pipe and a secondary refrigerant outlet pipe on the cylinder wall, a plurality of heat exchange pipes with two open ends and arranged in the cylinder body in parallel at intervals with a tube plate through gear boxes at two ends, wherein the axes of the heat exchange pipes are parallel to the axis of the cylinder body, seal heads are respectively arranged at the outer sides of the gear boxes and the tube plate, so that a first cavity and a second cavity are formed at two ends, a partition plate is axially arranged in the middle of the first cavity, the first cavity is formed into an upper cavity and a lower cavity, the upper cavity and the lower cavity are respectively connected with a refrigerant inlet pipe and a refrigerant outlet pipe, the second cavity is connected with an air entraining pipe, one end of each heat exchange pipe extends into the upper cavity and the lower cavity through the gear boxes, the other end of each heat exchange pipe is provided with a gear, the gears on the heat exchange pipes extending into the upper, Gears on the two heat exchange tubes in the lower cavity are meshed with a driving gear driven by a driving mechanism so as to drive the heat exchange tubes to synchronously rotate.

Furthermore, the driving mechanism comprises a driving wheel which is arranged outside the gear box and driven by a motor, and the driving wheel is in transmission connection with a driving gear arranged in the gear box through a belt.

One side edge of the partition plate is welded with the inner wall of the closed end of the first seal head, and the other side edge of the partition plate is welded with the middle of the surface of one side of the gear box.

The secondary refrigerant inlet pipe and the secondary refrigerant outlet pipe are respectively connected with an outlet pipe and an inlet pipe for secondary refrigerant circulation.

The air-entraining pipe and the refrigerant air outlet pipe are connected with an air inlet pipe of the refrigeration compressor.

The gear box is a hollow round box body, a through hole is formed in the gear box, and the heat exchange tube penetrates through the corresponding hole of the gear box.

And the edge of the open end of the first sealing head is welded with one side surface of the gear box.

The utility model discloses a dry-type shell and tube evaporator utilizes the motor to pass through the gear and drives the heat transfer pipe rotatory, and under the effect of centrifugal force, liquid in the heat transfer pipe is attached to on the inner wall of heat transfer pipe all the time, strengthens the heat transfer effect of refrigerant in the heat transfer pipe and outside of tubes secondary refrigerant, improves refrigerating system's performance, energy saving, environmental protection.

Drawings

FIG. 1 is a schematic view of a dry shell and tube evaporator according to the present invention;

fig. 2 shows a view from a-a in fig. 1.

Detailed Description

The present invention will be described in further detail with reference to the following drawings and specific embodiments.

As shown in fig. 1 and 2, the high-efficiency dry shell-and-tube evaporator of the present invention comprises a secondary refrigerant inlet tube 1, a cylinder 2, a heat exchange tube 3, a secondary refrigerant outlet tube 4, a gas guiding tube 5, a second head 6, a tube plate 7, a gear box 8, a gear 9, a first head 10, a refrigerant outlet tube 11, a partition plate 12, a refrigerant inlet tube 13, a driving wheel 14, a motor bracket 15, a motor 16, a belt 17, and a driving gear 18.

The heat exchange tubes 3 are round tubes with two open ends, the heat exchange tubes are multiple and form two groups, each group is arranged in a trapezoidal structure, as shown in fig. 2, a gear 9 is fixedly welded on the outer circle of one end of each heat exchange tube close to the top, the gears of each heat exchange tube are meshed together to realize the synchronous rotation of the heat exchange tubes under driving, the gear box 8 is a hollow round box body and is provided with a through hole, the heat exchange tubes 3 penetrate through the corresponding holes of the gear box 8 and are provided with gear parts located inside the gear box 8, a rotary seal is formed between the holes of the gear box and the outer circle surface of heat exchange, the gear box is fixedly welded at one end of the barrel body and also serves as a rotary supporting structure of the heat exchange tubes on the side, and a tube plate 7 is fixed at the other end of the barrel.

The orifices arranged at the closed end of the first seal head 10 are respectively welded with a refrigerant outlet pipe 11 and a refrigerant inlet pipe 13, and the edge of the open end is welded with the surface of one side of the gear box 8 to form a first cavity which is isolated from an inner cavity used for secondary refrigerant to flow through in the cylinder.

One side edge of the partition plate 12 is welded to the inner wall of the closed end of the first seal head 10, and the other side edge is welded to the middle of the surface of one side of the gear box 8, so that the first cavity forms an upper cavity and a lower cavity which are separated from each other up and down and are respectively used for refrigerant inlet and refrigerant outlet.

The driving wheel 14 is arranged outside the barrel 2, the driving gear 18 is arranged in the barrel 2, the belt 17 is sleeved outside a gear shaft of the driving gear 18 and the driving wheel 14, a main shaft of the motor 16 penetrates through the center of the driving wheel 14 to drive the driving wheel 14 to rotate and drive the driving gear 18 to rotate, so that the driving gear 9 rotates to enable the heat exchange tube 3 to rotate, and the motor support 15 of the motor 16 is fixed outside the barrel 2.

And the secondary refrigerant inlet pipe 1 and the secondary refrigerant outlet pipe 4 are respectively connected with an outlet pipe and an inlet pipe of the secondary refrigerant cycle.

The air-entraining pipe 5 and the refrigerant air outlet pipe 11 are connected with an air inlet pipe of the refrigeration compressor.

When the refrigerating system operates, refrigerant liquid at the outlet of the throttling and pressure reducing element enters the upper space of the first seal head 10 through the refrigerant liquid inlet pipe 13, respectively enters each heat exchange pipe at the upper part, exchanges heat with secondary refrigerant outside the pipe and enters the second seal head 6, and formed gas is led out through the gas guide pipe 5; the motor drives the gear 9 through the driving wheel 14, the belt pulley 17 and the driving gear 18 to drive the heat exchange tube to rotate, under the action of centrifugal force, refrigerant liquid in the heat exchange tube is always attached to the inner wall of the heat exchange tube, the refrigerant liquid enters the heat exchange tube at the lower part under the action of gravity and exchanges heat with secondary refrigerant outside the tube, and generated gas returns to the refrigeration compressor through the refrigerant outlet tube 11.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A dry shell-and-tube evaporator is characterized by comprising a cylinder body with a secondary refrigerant inlet pipe and a secondary refrigerant outlet pipe on the cylinder wall, and a plurality of heat exchange tubes which are arranged in the cylinder body in parallel at intervals with a tube plate through gear boxes at two ends, wherein the heat exchange tubes are provided with two open ends, the axes of the heat exchange tubes are parallel to the axis of the cylinder body, the gear boxes and the outer sides of the tube plate are respectively provided with end sockets, so that a first cavity and a second cavity are formed at two ends, a partition plate is axially arranged in the middle of the first cavity, the first cavity is formed into an upper cavity and a lower cavity, the upper cavity and the lower cavity are respectively connected with a refrigerant inlet pipe and a refrigerant outlet pipe, the second cavity is connected with an air entraining tube, one end of each heat exchange tube extends into the upper cavity and the lower cavity through the gear boxes, the other end of each heat exchange tube is provided with a gear, the gears on the two heat exchange tubes extending into the upper cavity and the lower cavity are meshed with a driving gear driven by a driving mechanism so as to drive the heat exchange tubes to rotate synchronously.

2. A dry shell and tube evaporator as set forth in claim 1 wherein said drive mechanism includes a motor driven drive pulley disposed outside of a gear box, said drive pulley being in belt driven communication with a drive gear disposed within said gear box.

3. A dry shell and tube evaporator as set forth in claim 1 wherein one side edge of the partition is welded to the inner wall of the closed end of the first header and the other side edge is welded to the middle of one side surface of the gear case.

4. A dry shell and tube evaporator as set forth in claim 1 wherein the coolant inlet tube and the coolant outlet tube are connected to an outlet tube and an inlet tube, respectively, for circulation of the coolant.

5. A dry shell and tube evaporator as set forth in claim 1 wherein said air-entraining duct and refrigerant outlet duct are connected to the air-intake duct of the refrigeration compressor.

6. A dry shell and tube evaporator as set forth in claim 1 wherein the gear case is a hollow circular box having an aperture therethrough, the heat exchange tubes passing through corresponding apertures of the gear case.

7. A dry shell and tube evaporator as set forth in claim 3 wherein the edge of the open end of the first head is welded to one side surface of the gear case.