CN220229690U

CN220229690U - Anti-condensation structure of ventilating and smoke discharging pipeline of refrigeration house

Info

Publication number: CN220229690U
Application number: CN202320563633.8U
Authority: CN
Inventors: 刘付伟; 昌爱文; 万东东; 陈焰华
Original assignee: CITIC General Institute of Architectural Design and Research Co Ltd
Current assignee: CITIC General Institute of Architectural Design and Research Co Ltd
Priority date: 2023-03-21
Filing date: 2023-03-21
Publication date: 2023-12-22
Anticipated expiration: 2033-03-21

Abstract

The utility model provides a structure for preventing dewfall of freezer ventilation flue, including tuber pipe I, tuber pipe II, celestial pipe I, celestial pipe II, fan, the electronic airtight valve of normal close, electronic rolling slats door, tuber pipe I, tuber pipe II, celestial pipe I, celestial pipe II and fan all set up in the exhaust air machine room that discharges fume, tuber pipe I is connected with the air outlet of fan through celestial pipe I, tuber pipe I passes the freezer outer wall, the air outlet setting of tuber pipe I is in the freezer outer wall outside, electronic rolling slats door sets up the air outlet at tuber pipe I; the second air pipe passes through the partition wall of the smoke exhaust and air exhaust machine room, and the normally closed electric sealing valve is arranged at the inlet of the second air pipe. When ventilation and smoke discharge are carried out, the rolling door is started first, and then the sealing valve and the fan are opened. The structure can separate indoor and outdoor air circulation, reduce the loss of cold energy generated by heat exchange of the valve, prevent the condensation of the pipeline, reduce the loss of cold energy, and save energy and operation cost.

Description

Anti-condensation structure of ventilating and smoke discharging pipeline of refrigeration house

Technical Field

The utility model belongs to the technical field of ventilation and smoke exhaust engineering, and particularly relates to a condensation prevention structure of a ventilation and smoke exhaust pipeline of a refrigeration house.

Background

The ventilating and smoke discharging pipeline arranged in the hall and the cold storage is characterized in that most of the air pipes adopt galvanized steel plates, and the unavoidable cold quantity is subjected to cold bridge phenomenon of heat exchange with outdoor air through the pipeline, so that cold quantity loss of the cold storage is caused, condensation of the air pipes occurs, condensate water is generated to drop, the evaporator is operated for a long time, the cost is increased, and the evaporator can be possibly damaged. Therefore, after completion and acceptance of many projects, the indoor part pipeline is removed, and the situation is prevented. However, such actions seriously affect fire safety, and when a fire disaster occurs, smoke is gathered and cannot be removed in time, so that fire evacuation and personnel life safety are affected.

In the conventional design, an electric sealing valve or a check valve is arranged at an air pipe inlet and outlet or a cold and hot environment partition wall to prevent air flow. The mode can greatly slow down the cold and heat exchange and the generation of condensed water, but the valve blades are made of metal materials, so that the cooling capacity loss through the blades is very large especially when the indoor and outdoor temperature difference is large.

Disclosure of Invention

The utility model aims to provide a condensation prevention structure for a ventilating and smoke discharging pipeline of a refrigeration house, which can effectively block the flow between cold air and hot air, reduce the loss of cold energy generated by heat exchange of a valve, prevent the pipeline from condensation, reduce the cold energy loss and save energy and operation cost.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

the structure for preventing condensation of the ventilating and smoke discharging pipeline of the refrigeration house comprises a first air pipe, a second air pipe, a first dome pipe, a second dome pipe, a fan, a normally closed electric closed valve and an electric rolling shutter door, wherein the first air pipe, the second air pipe, the first dome pipe, the second dome pipe and the fan are all arranged in a smoke discharging and air discharging machine room of the refrigeration house; the second air pipe passes through the partition wall of the smoke exhaust machine room of the refrigeration house, and the normally closed electric closed valve is arranged at the inlet of the second air pipe.

The utility model connects the electric sealing valve, the fire-proof valve, the air pipe, the dome and the fan in the ventilation and smoke exhaust system together to form a complete pipeline system, and an electric rolling door is arranged at the outlet of the outer wall.

And a fire-proof valve is arranged on the second air pipe, and the fire-proof valve is positioned between the second dome pipe and the normally closed electric sealing valve.

The normally-closed electric closed valve is a normally-closed electric heat-insulating closed valve; the power supply is AC220V and is mounted close to the split body of the low-temperature environment and the high-temperature environment.

When the fireproof valve is used for a smoke exhaust system, a fireproof valve at 70 ℃ is adopted; when the air-conditioner is used for ventilation at ordinary times, the fireproof valve is a 280 ℃ fireproof valve. The utility model can effectively separate the flow between cold air and hot air, reduce the loss of cold energy generated by heat exchange of the valve, prevent the condensation of pipelines, reduce the loss of cold energy, and save energy and operation cost.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

fig. 2 is a top view of fig. 1.

Description of the embodiments

Referring to fig. 1 and 2, a structure for preventing condensation of a ventilation and smoke exhaust pipeline of a refrigeration house comprises a first air pipe 1.1, a second air pipe 1.2, a first dome pipe 2.1, a second dome pipe 2.2, a fan 3, a normally closed electric closed valve 5 and an electric rolling shutter door 6, wherein the first air pipe 1.1, the second air pipe 1.2, the first dome pipe 2.1, the second dome pipe 2.2 and the fan 3 are all arranged in a smoke exhaust and air exhaust machine room 7 of the refrigeration house, the first air pipe 1.1 is connected with an outlet of the fan 3 through the first dome pipe 2.1, the first air pipe 1.1 passes through an outer wall 8 of the refrigeration house, an air outlet of the first air pipe 1.1 is arranged outside an outer wall 8 of the refrigeration house, and the electric rolling shutter door 6 is arranged at an air outlet of the first air pipe 1.1; the second air pipe 1.2 is connected with the inlet of the fan 3 through the second dome pipe 2.2, the second air pipe 1.2 passes through a partition wall 9 of a smoke exhaust and air exhaust machine room of the refrigerator, and the normally closed electric sealing valve 5 is arranged at the inlet of the first air pipe 1.1.

The utility model is composed of an electric closed valve 5, a fireproof valve 4, an air pipe I1.1, an air pipe II 1.2, a round-sky-earth pipe I2.1, a round-sky-earth pipe II 2.2, a fan 3 and an electric rolling shutter door 6 in sequence, when the system operates, the electric rolling door 6 is firstly opened, then the electric sealing valve 5 is opened, and finally the fan is opened.

The air temperature between the electric rolling door 6 and the electric closed valve is between outdoor high-temperature air and indoor low-temperature air and is in a static state, and the electric rolling door 6 has the functions of heat preservation and air isolation, so that the heat exchange between cold and hot air is greatly slowed down, and the possibility of condensation of a ventilation and smoke exhaust pipeline is avoided.

Claims

1. The utility model provides a freezer ventilation flue structure of preventing dewfall which characterized in that: the air-conditioning system comprises an air pipe I, an air pipe II, a dome square tube I and a dome square tube II, a fan, a normally closed electric closed valve and an electric rolling door, wherein the air pipe I, the air pipe II, the dome square tube I, the dome square tube II and the fan are all arranged in a smoke exhaust and air exhaust machine room, the air pipe I is connected with an air outlet of the fan through the dome square tube I, the air pipe I passes through an outer wall of a cold storage, the air outlet of the air pipe I is arranged on the outer side of the outer wall of the cold storage, and the electric rolling door is arranged at the air outlet of the air pipe I; the second air pipe passes through the partition wall of the smoke exhaust and air exhaust machine room, and the normally closed electric sealing valve is arranged at the inlet of the second air pipe.

2. The refrigerator ventilation and smoke exhaust duct condensation prevention structure according to claim 1, wherein: the second air pipe is provided with a fireproof valve, and the fireproof valve is positioned between the second dome pipe and the normally closed electric sealing valve.

3. The refrigerator ventilation and smoke exhaust duct condensation prevention structure according to claim 2, wherein: the fire damper is a 280 ℃ fire damper or a 70 ℃ fire damper.

4. The refrigerator ventilation and smoke exhaust duct condensation prevention structure according to claim 1, 2 or 3, wherein: the normally-closed electric sealing valve is a normally-closed electric heat-preserving sealing valve.