KR101860267B1 - An air sampling fire detection system including a heat exchanger capable of preventing condensation and freezing - Google Patents

Abstract

The present invention relates to a cold storage air inhalation type fire detection system capable of preventing condensation and freezing. More specifically, a system for detecting a fire in a cold storage comprises: an air inhalation type fire detector installed outside the cold storage, and detecting the fire by introducing the air in the cold storage; an inhalation pipe provided between the cold storage and the fire detector, and introducing the air in the cold storage to the fire detector side; and a heat exchanger provided on one side of the inhalation pipe, and heating the air introduced to the fire detector.

Description

[0001] The present invention relates to an air intake type fire detection system having a heat exchanger for condensation and freezing,

The present invention relates to an air intake type fire detection system capable of preventing condensation and freezing. An air intake type fire detector which can prevent a fire in the same space as a freezing warehouse. The inside of a suction pipe connecting a freezing warehouse and an air intake type fire detector to prevent condensation and freezing caused by cold air discharged from a freezing warehouse The present invention relates to a freeze storage warehouse air intake type fire detection system having a condenser and a frost free heat exchanger capable of maintaining an air temperature at a dew point or more.

The environment inside the freezing warehouse is dried by the air conditioner and has a fast air flow. However, in a fire situation, the fire spreads quickly due to the above environment of the freezing warehouse. Therefore, in order to minimize damage and damage to the freezing warehouse, the fire must be detected at an early stage.

FIG. 1 is a block diagram of a refrigerator air-intake type fire detector. In general, as shown in Fig. 1, an air intake type fire detector is used in a freezing warehouse.

The air intake type smoke detector is disposed outside the freezing warehouse, and the detector absorbs the cold air discharged from the freezing warehouse through the pipe. However, the temperature of the air-intake type sensor is lowered by the inhaled cold air, and condensation freezing phenomenon due to the high dew point of the relatively high temperature and high humidity environment occurs, thereby causing malfunction of the air-intake type sensor.

Particularly, in the case of hot and humid summer and autumn season, the dew point is relatively higher than other seasons, so that the occurrence of condensation freezing becomes more serious.

Therefore, it has been required to develop a method and system that can reliably prevent the occurrence of condensation freezing in such an air intake type fire detector.

Korean Patent Publication No. 2013-0017323 Korean Patent No. 1221768 Korean Patent Publication No. 2008-0075365

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide an air intake type fire detector for preventing a fire in a freezing warehouse, And an object of the present invention is to provide an air intake type fire detection system having a heat exchanger for preventing condensation and freezing from occurring.

According to one embodiment of the present invention, the sub-zero internal air discharged from the refrigerating depot through the suction pipe through the heat exchanger tube and the transfer fan is heated to the dew point or more based on the temperature and humidity of the external environment to prevent condensation and freezing of the fire detector And an object of the present invention is to provide an air intake type fire detection system having a condensation preventing and freezing preventing heat exchanger.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are not intended to limit the invention to the precise form disclosed. It can be understood.

An object of the present invention is to provide a system for detecting a fire in a freezing warehouse, the system comprising: an air intake type fire detector installed outside the freezing warehouse and detecting a fire by flowing air in the freezing warehouse; A suction pipe provided between the freezing storage and the fire detector for introducing the air in the freezing storage to the fire detector side; And a heat exchanger disposed at one side of the suction pipe for heating the air flowing into the fire detector. The refrigeration storage air intake type fire detection system according to claim 1,

The heat exchanger may include: a case having a suction port through which the air and the outside air are heat-exchanged and into which the outside air flows, and an exhaust hole through which the cooled outside air is discharged; A heat exchange tube provided in the case, the heat exchange tube being connected to the suction pipe and having an inlet end into which the air flows and an outlet end through which the air heated by the ambient air is discharged to the fire sensor; And a plurality of fins provided outside the heat exchange tube.

Further, the heat exchange tube may be characterized by being bent in a zigzag shape.

The air conditioner may further include a feed fan provided to introduce the outside air into the case.

The apparatus may further include a plurality of flow guiding members provided on the inner surface of the case to guide the introduced outside air to flow in a staggered manner.

The air conditioner may further include heating means provided at one side of the case for heating the outside air introduced into the case.

Further, it is preferable to further include a suction pump provided at one side of the suction pipe to provide power for sucking air in the freezing storage and a regulating valve provided at one side of the suction pipe to regulate a flow rate of air introduced into the heat exchanger .

The apparatus may further include at least one of an outside temperature sensor for measuring an outside temperature in real time, an outside air humidity sensor for measuring outside humidity in real time, and a temperature sensor for measuring the temperature of the air flowing into the fire sensor in real time .

The control unit controls the flow of the outside air flowing into the case by controlling the driving of the conveying fan and controls the amount of air flowing into the heat exchanger by controlling the suction pump and the control valve, And a control unit for controlling the temperature of the outside air in the case.

The control unit controls the temperature of the air to be introduced into the fire sensor to be higher than the dew point based on the temperature measured by the outside air temperature sensor and the outside air humidity sensor and the temperature sensor. , And the control valve is controlled.

The control unit may further include a monitoring unit for monitoring a measured value transmitted to the control unit, a control signal controlled by the control unit, and a value detected by the fire sensor in real time.

The mobile terminal may further include communication means for establishing a communication connection between the monitoring unit and the set user terminal, and may transmit a control signal to the control unit through the set user terminal.

According to the air intake type fire detection system having a heat exchanger for preventing condensation and freezing according to an embodiment of the present invention, damage due to condensation and icing occurring in the air intake type fire detector chamber can be prevented, Not only is it easy to install in existing facilities, but also there is little energy provided for maintenance of the apparatus, which is advantageous in terms of economy.

It should be understood, however, that the effects obtained by the present invention are not limited to the above-mentioned effects, and other effects not mentioned may be clearly understood by those skilled in the art to which the present invention belongs It will be possible.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate preferred embodiments of the invention and, together with the description, serve to further the understanding of the technical idea of the invention, It should not be construed as limited.
1 is a block diagram of a refrigerator-type air intake type fire detector,
FIG. 2 is a configuration diagram of a refrigeration warehouse air-intake type fire detection system capable of preventing condensation and freezing according to an embodiment of the present invention;
FIG. 3A is a configuration diagram of a heat exchanger according to the first embodiment of the present invention,
FIG. 3B is a cross-sectional view of the heat exchanger according to the first embodiment of the present invention,
3C is a side view of the heat exchange tube according to the first embodiment of the present invention,
FIG. 4A is a configuration diagram of a heat exchanger according to a second embodiment of the present invention, FIG.
FIG. 4B is a perspective view of a heat exchanger according to a second embodiment of the present invention, FIG.
FIG. 4C is a plan view of a heat exchanger according to a second embodiment of the present invention, FIG.
5 is a configuration diagram of a heat exchanger according to a third embodiment of the present invention.
FIG. 6 is a block diagram illustrating a signal flow of a control unit according to an embodiment of the present invention. Referring to FIG.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features, and advantages of the present invention will become more readily apparent from the following description of preferred embodiments with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein but may be embodied in other forms. Rather, the embodiments disclosed herein are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the invention to those skilled in the art.

In this specification, when an element is referred to as being on another element, it may be directly formed on another element, or a third element may be interposed therebetween. Also in the figures, the thickness of the components is exaggerated for an effective description of the technical content.

Embodiments described herein will be described with reference to cross-sectional views and / or plan views that are ideal illustrations of the present invention. In the drawings, the thicknesses of the films and regions are exaggerated for an effective description of the technical content. Thus, the shape of the illustrations may be modified by manufacturing techniques and / or tolerances. Accordingly, the embodiments of the present invention are not limited to the specific forms shown, but also include changes in the shapes that are produced according to the manufacturing process. For example, the area shown at right angles may be rounded or may have a shape with a certain curvature. Thus, the regions illustrated in the figures have attributes, and the shapes of the regions illustrated in the figures are intended to illustrate specific forms of regions of the elements and are not intended to limit the scope of the invention. Although the terms first, second, etc. have been used in various embodiments of the present disclosure to describe various components, these components should not be limited by these terms. These terms have only been used to distinguish one component from another. The embodiments described and exemplified herein also include their complementary embodiments.

The terminology used herein is for the purpose of illustrating embodiments and is not intended to be limiting of the present invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. The terms "comprises" and / or "comprising" used in the specification do not exclude the presence or addition of one or more other elements.

In describing the specific embodiments below, various specific details have been set forth in order to explain the invention in greater detail and to assist in understanding it. However, it will be appreciated by those skilled in the art that the present invention may be understood by those skilled in the art without departing from such specific details. In some instances, it should be noted that portions of the invention that are not commonly known in the description of the invention and are not significantly related to the invention do not describe confusing reasons to explain the present invention.

Hereinafter, the configuration and function of the air-intake type fire detection system 100 for preventing condensation and freezing according to an embodiment of the present invention will be described. The refrigeration warehouse (2) described in the specification of the present invention should be construed as a concept including all chambers and warehouses having an internal temperature lower than the ambient temperature such as a refrigerator and a freezer. 2 is a block diagram of a freeze storage warehouse air intake type fire detection system 100 capable of preventing condensation and freezing according to an embodiment of the present invention.

As shown in FIG. 2, the freeze storage warehouse air-intake type fire detection system 100 capable of preventing condensation and freezing according to an embodiment of the present invention basically includes cold air in the freezing warehouse 2 to the outside 1 To the side of the installed air suction type fire detector (50), and then circulated back into the freezer warehouse (2). And a heat exchanger (10) for preheating the air before the fire detection is introduced into the fire detector (50) to prevent freezing and condensation in the fire detector (50) by air introduced into the air intake type fire detector .

The air suction type fire detector 50 is installed on the outside 1 of the freezing warehouse 2, and air in the freezing warehouse 2 is inflowed to detect a fire. The fire detector 50 applied to the present invention is not limited in its specific configuration, form, and type as long as it can detect a fire including a smoke detector.

The suction pipe 3 connects between the freezer compartment 2 and the fire detector 50 and allows the air in the freezer compartment 2 to flow into the fire detector 50 side. As shown in FIG. 2, a suction pump 4 is provided at one side of the suction pipe 3 to provide power for sucking air in the freezing storage 2. The suction pump 4 is provided at one side of the suction pipe 3, And a control valve 5 for controlling the flow rate of the air flowing into the combustion chamber 10.

A heat exchanger (10) for preventing condensation and freezing of the fire detector (50) is provided at the end of the suction pipe (3) to heat the air flowing into the fire detector (50). That is, the air passes through the heat exchanger 10 and increases the temperature of the air to above the dew point before entering the fire detector 50.

A connection pipe 30 is provided between the heat exchanger 10 and the air intake type fire detector 50. The air passing through the fire detector 50 is supplied to the freezing storage 2 through the circulation pipe 40, . The air in the freezing storage 2 is discharged from the freezing storage 2 through the suction pipe 3 and heated to a temperature higher than the dew point by passing through the heat exchanger 10 and then passed through the connection pipe 30 to the smoke detector 50, And then flows into the freezing storage 2 through the circulation pipe 40.

The heat exchanger 10 according to the embodiment of the present invention is basically configured to increase the temperature of the air through heat exchange with the outside air without consuming any energy. Hereinafter, the structure of the heat exchanger 10 according to the present invention will be described in more detail. However, the heat exchanger 10 described below is merely an example of preferred embodiments, and the scope of the right should not be construed to be limited to these embodiments.

FIG. 3A shows a configuration diagram of a heat exchanger 10 according to a first embodiment of the present invention. FIG. 3B is a cross-sectional view of the heat exchanger 10 according to the first embodiment of the present invention, and FIG. 3C is a side view of the heat exchange tube 11 according to the first embodiment of the present invention.

In the heat exchanger 10 according to the first embodiment of the present invention, the air sucked in the freezing storage 2 and the outside air are heat-exchanged, and the air is heated to the dew point or more and discharged to the fire detector 50, (11), a case (15), and a pin (14).

As shown in FIGS. 3A and 3B, the case 15 includes an inlet 16 through which outside air flows into the inside of the case 15 and an outlet 17 through which the cooled outside air is exhausted.

The heat exchange tube 11 is provided in the case 15 and has an inlet end 12 connected to the suction pipe 3 and through which air flows and an outlet end 12 through which the air heated by the ambient air is discharged to the fire detector 50 (13). In the first embodiment, it is configured as an intuitive shape. The heat exchange tube 11 is made of a metal material having high thermal conductivity such as copper or aluminum.

The heat exchanger 10 according to the first embodiment of the present invention includes a plurality of fins 14 provided outside the heat exchange pipe 11 to increase heat exchange performance. These fins 14 are arranged along the longitudinal direction of the heat exchange tube 11 and are arranged in a plurality of spaces spaced apart from one another in the circumferential direction. The fin 14 is also made of a metal material having high thermal conductivity such as copper or aluminum.

In order to increase the efficiency of heat exchange, the flow of the outside air flowing into the case 15 is preferably opposite to the flow of air flowing in the heat exchange pipe 11, so that the flows of the outside air flow opposite to each other.

FIG. 4A shows the structure of a heat exchanger 10 according to a second embodiment of the present invention. 4B is a perspective view of the heat exchanger 10 according to the second embodiment of the present invention, and FIG. 4C is a plan view of the heat exchanger 10 according to the second embodiment of the present invention.

4A to 4B, the heat exchanger 10 according to the second embodiment of the present invention includes a zigzag heat exchange tube 11, a fin 14, a case 15, a transfer fan 20, As shown in FIG. The heat exchange tube 11 according to the second embodiment of the present invention has a zigzag shape bent twice at 180 degrees and the outer air is blown toward the suction port 16 side of the case 15 by driving the transfer fan 20 And can be exhausted through the exhaust port 17.

In addition, the controller 70 controls the driving of the feed fan 20 to adjust the air flow and the flow rate of the external air. A plurality of fins 14 for increasing the heat exchange efficiency are provided on the outer surface of the heat exchange tube 11 according to the second embodiment as in the first embodiment.

FIG. 5 shows the structure of a heat exchanger 10 according to a third embodiment of the present invention. As shown in FIG. 5, the heat exchanger 10 according to the third embodiment of the present invention has a zigzag heat exchanger tube 11, and a plurality of heat exchanger tubes 11 are provided on the outer surface of the heat exchanger tube 11, It can be seen that the pin 14 is installed.

The case 15 according to the third embodiment of the present invention is provided with a plurality of flow guiding members 18 on the inner surface of the case 15 so that the inflow air flowing in the zig- And the heat exchange efficiency is increased.

A heating means may be provided at one side of the case 15 so as to heat the outside air introduced into the case 15. The temperature sensor 31 may be provided on the side of the discharge end 13 of the heat exchange pipe 11 to measure the temperature of the air flowing into the fire detector 50 in real time.

FIG. 6 is a block diagram of a frozen storage air intake type fire detection system 100 capable of preventing condensation and freezing, illustrating a signal flow of the control unit 70 according to an embodiment of the present invention.

As described above, a suction pump 4 is provided at one side of the suction pipe 3 to provide power for sucking air in the freezer compartment 2, and a control valve 5 provided at one side of the suction pipe 3 The flow rate of the air flowing into the heat exchanger 10 can be adjusted.

According to an embodiment of the present invention, there is provided a refrigeration warehouse air-intake type fire detection system 100 capable of preventing condensation and freezing from occurring, comprising an outside temperature sensor 6 for measuring an outside temperature in real time, And a temperature sensor 31 for measuring the temperature of the air flowing into the fire detector 50 in real time.

The control unit 70 controls the driving of the feed fan 20 to adjust the flow rate of the outside air flowing into the case 15 and controls the suction pump 4 and the control valve 5 to control the heat exchanger 10, And the temperature of the outside air in the case 15 is controlled by controlling the heating means.

The control unit 70 calculates the dew point based on the values measured by the outside air temperature sensor 6 and the outside air humidity sensor 7 and calculates the dew point based on the values measured by the temperature sensor 31, The heating means, and the regulating valve 5 so that the temperature of the air flowing into the regulating valve 5 is maintained above the dew point.

6, the freeze storage warehouse air intake type fire detection system 100 capable of preventing condensation and freezing according to an embodiment of the present invention detects a difference between a measured value transmitted to the controller 70 and a measured value transmitted to the controller 70 And a monitoring unit 60 for monitoring a value sensed by the fire detector 50 in real time.

The monitoring unit 60 and the set user terminal 8 can be communicatively connected by the communication unit. Therefore, the manager or the like using the set user terminal 8 can monitor the state of the refrigeration warehouse air intake type fire detection system 100 capable of preventing condensation and freezing through the user terminal 8 in real time, To the control unit (70) through the user terminal (8).

It should be noted that the above-described apparatus and method are not limited to the configurations and methods of the embodiments described above, but the embodiments may be modified so that all or some of the embodiments are selectively combined .

1: External
2: Frozen warehouse
3: suction pipe
4: Suction pump
5: Regulating valve
6: Outside temperature sensor
7: Ambient humidity sensor
8: User terminal
10: Heat exchanger
11: Heat exchanger tube
12: inlet end
13: Discharge end
14:
15: Case
16: inlet
17: Exhaust
18: Flow guide member
20: Feeding fan
30: Connector
31: Temperature sensor
40: Circulation tube
50: Air intake type smoke detector
60: Monitoring section
70:
100: An air intake type fire detection system (100) having a heat exchanger for preventing condensation and freezing,

Claims (12)

CLAIMS 1. A system for detecting a fire in a refrigeration warehouse,
An air intake type fire detector installed outside the freezing warehouse and detecting the fire by flowing air in the freezing warehouse;
A suction pipe provided between the freezing storage and the fire detector for introducing the air in the freezing storage to the fire detector side;
A heat exchanger provided at one side of the suction pipe to heat the air flowing into the fire detector to exchange heat between the air and the outside air;
A case having an inlet through which outside air flows into the inside and an outlet through which the cooled outside air is exhausted;
A heat exchange tube provided in the case, the heat exchange tube being connected to the suction pipe and having an inlet end into which the air flows and an outlet end through which the air heated by the ambient air is discharged to the fire sensor;
A plurality of fins provided outside the heat exchange tube;
A transfer fan provided to introduce the outside air into the case; And
And a plurality of flow guide members provided on an inner surface of the case and guiding the introduced outside air to flow in a staggered manner,
Wherein the heat exchange pipe has a shape bent in a zigzag shape, wherein the condensation and frost prevention can be prevented.
delete delete delete delete The method according to claim 1,
Further comprising a heating means provided at one side of the case for heating the outside air introduced into the case, wherein the condensing and freezing prevention can be prevented.
The method according to claim 6,
A suction pump provided at one side of the suction pipe for providing power for sucking air in the freezing storage and a control valve provided at one side of the suction pipe for controlling a flow rate of air flowing into the heat exchanger, Refrigeration warehouse with condensation and freezing prevention. Air intake type fire detection system.
8. The method of claim 7,
An outdoor temperature sensor for measuring an outdoor temperature in real time, an outdoor humidity sensor for measuring an outdoor humidity in real time, and a temperature sensor for measuring a temperature of air flowing into the fire sensor in real time. Freezing warehouse with freeze protection Air intake type fire detection system.
9. The method of claim 8,
Controls the driving of the conveying fan to adjust the flow rate of outside air introduced into the case, controls the suction pump and the control valve to adjust the amount of air flowing into the heat exchanger, and controls the heating means Further comprising a control unit for controlling the temperature of the outside air in the case.
10. The method of claim 9,
Wherein the control unit controls the transfer fan and the heating unit so that the temperature of the air flowing into the fire sensor is maintained at a dew point or more based on the temperature measured by the outside air temperature sensor, Wherein the control valve is controlled by a control unit.
11. The method of claim 10,
And a monitoring unit for monitoring in real time the measured value transmitted to the controller, the control signal controlled by the controller, and the value detected by the fire detector. Fire detection system.
12. The method of claim 11,
Wherein the control unit further comprises communication means for establishing a communication connection between the monitoring unit and the set user terminal and transmitting a control signal to the control unit through the set user terminal. system.

Images