KR20210053277A - Facility area heat exchange system using indirect heat exchange - Google Patents

Abstract

The present invention relates to a facility area heat exchanging system using an indirect heat exchanging method, which replaces an outdoor unit by a small heat exchanger, where the outdoor unit should be additionally installed in the outside for cooling compressed high temperature and high pressure refrigerant gas through an air cooling method by connection to the indoor unit through a copper pipe, and the heat exchanger with a small volume is applied to an evaporator and a condenser of an indoor unit main body to perform heat exchanging through a secondary refrigerant to be easily installed and repaired.

Description

Facility area heat exchange system using indirect heat exchange}

The present invention relates to a heat exchange system, and in detail, an outdoor unit that has to be separately installed outside in order to cool the compressed high-temperature, high-pressure refrigerant gas that is connected by a copper tube to the indoor unit by an air-cooling method is replaced with a small heat exchanger and a heat exchanger having a small volume. The present invention relates to a facility area heat exchange system using an indirect heat exchange method that is easy to install and repair by applying it to an evaporator and a condenser of an indoor unit to perform heat exchange through a secondary refrigerant.

In an environment with a large seasonal temperature difference, a pleasant indoor environment is created by heating or cooling according to the external temperature. In other words, a heating system is operated in winter and a cooling system represented by an air conditioner is operated in summer, and a cooling and heating system of a standard suited to the target space is used.

These air conditioners and heating devices were generally manufactured as separate devices, but recently, products that combine them into one device are also being released.In particular, by applying a refrigeration cycle, cooling and heating are combined using the heat of refrigerant and condensation heat. Products with a heat pump structure are also being released.

Such a heat pump is substantially the same as the air conditioner because the condenser and evaporator play opposite roles in the structure of an air conditioner equipped with a compressor, evaporator, condenser, and expansion valve and perform cooling and heating. It is composed of an indoor unit that performs heat exchange with the outdoor unit and an outdoor unit that is installed outdoors to exchange heat with the outside air.

The outdoor unit and the indoor unit are connected by a metal pipe for the movement of the refrigerant, which makes installation or relocation difficult, and in particular, it is installed at the boundary of the interior or exterior such as a window frame to select the installation location for convenience of construction and cost reduction. There is a limitation on this, and there is a problem that a separate support for installing the outdoor unit is required and cumbersome.

In addition, in places where space is limited, such as in a dense shopping mall, the piping due to the installation of the outdoor unit is lengthened and suffers spatial difficulties.Since the refrigerant piping is installed in a way that passes through the wall, the refrigerant is often leaked due to poor construction or aging. There is a case of charging it.

Recently, small-sized portable air conditioners are also on the market that have both evaporators, compressors, condensers, and expanders inside the body, which makes it easy to install and move. Therefore, since the heat generated by connecting the duct must be discharged to the outside through a window or the like, inconvenience, installation cost, and noise caused by duct facilities were pointed out as problems.

Korean Patent Registration No. 10-0570300 (2006.04.05)

The present invention was created to solve the above problems, and an object of the present invention is to heat exchange with cooling water circulating from a central cooling tower in various facilities to control cold and hot water in each zone, and simplification of the structure of the cooling water system and condensation It is to provide a heat exchange system for a facility area using an indirect heat exchange method that can prevent damage caused by it.

For the above purposes, the present invention includes a compressor for compressing the refrigerant in the system, a condenser for cooling and liquefying the compressed refrigerant, an expansion valve for expanding the liquefied refrigerant, and an evaporator for discharging cold air from the expanded refrigerant. In one heat exchange system, the compressor, the condenser, the expansion valve, and the evaporator are built-in, and the first heat exchange module is integrated with the evaporator to exchange heat with the circulated first fluid, and the fluid of the first heat exchange module is circulated. A main body including a first pump that is integrated with the condenser, a second heat exchange module that performs heat exchange through a second fluid circulated, and a second pump that circulates the fluid of the second heat exchange module; A first core module connected to the first heat exchange module to circulate a first fluid therein and heat exchange with the indoor side; A second core module connected to the second heat exchange module to circulate a second fluid therein and heat exchange with an outdoor side; It characterized in that it consists of.

At this time, the first heat exchange module and the second heat exchange module include a first body having a first entrance and exit hole penetrating inside and outside at one end, forming a first space inside, and opening at the other end, and a flow path inside. A coil part formed by surrounding the first body in the form of a spring in which a tube is formed, and one side is sealed around the first body and the other side is sealed apart from the other end of the first body, but between the inner wall and the coil part. In the second space connected to the first space and a second opening and exiting hole penetrating through the inside and outside at one end portion, and having the same structure consisting of a cylindrical second body through which both ends of the coil part penetrate to the outside, the first In the 1 heat exchange module, the refrigerant and the first fluid are selectively located in the coil part, the first space, and the second space, and the second heat exchange module selectively contains the refrigerant and the second fluid in the coil part, the first space, and the second space. Can be located.

Specifically, in the first heat exchange module, the evaporator is composed of a coil part, the pump and the core are connected so that the first fluid is circulated through the first inlet hole and the second inlet hole, and the second heat exchange module includes a condenser as a coil part. The pump and the core may be connected so that the second fluid is circulated through the first inlet hole and the second inlet hole.

In addition, an electrode is formed at one end, and a rod-shaped heater installed inside the first space so that the electrode is exposed to the outside of the first body, and the inner wall of the first space and the outer wall of the second space protrude to form a spiral flow path. It may further include a formed spiral structure.

In addition, a first hose module made of a flexible tube to connect the first heat exchange module to the pump and the core and circulate the first fluid; A second hose module consisting of a flexible tube and connecting the second heat exchange module to the pump and the core and circulating a second fluid; It may further include.

In this case, the first hose module and the second hose module may each include a valve that blocks the flow of the first fluid and the second fluid, and a connector that can be coupled/removable from the outside of the body, respectively.

In addition, a cooling tower that is installed outside the facility to heat-exchange the cooling water with outside air, and supplies and circulates the cooling water through the cooling water pump to the cooling pipe passage passing through the area of the facility; But include more. The second core may be embedded in the cooling conduit path and configured to perform heat exchange between the cooling water and the second fluid.

In the present invention, the structure of the outdoor unit is miniaturized and built into the body of the indoor unit, but it is water-cooled and heat-exchanged through an external heat exchanger connected through a flexible pipe, so it is easy to install and move. It can also be used.

In particular, it is possible to control hot and cold water in each area by exchanging heat with the cooling water circulating from the central cooling tower without a machine room equipped with a large central refrigerator in various facilities, and if necessary, partial maintenance without stopping the entire system is possible, and the structure of the cooling water system is simplified. And can prevent damage caused by condensation in the pipe.

1 is a conceptual diagram according to the present invention,
2 is a perspective view showing the outer shape of the heat exchange module according to the present invention,
3 is a cross-sectional view showing the interior of the heat exchange module according to the present invention,
4 is a block diagram showing an electronic configuration and connection relationship according to the present invention;
5 is a conceptual diagram according to an embodiment of the present invention,
6 is a perspective view showing the external appearance of a heat exchange module according to an embodiment of the present invention,
7 is a cross-sectional view showing the interior of the heat exchange module according to an embodiment of the present invention;
8 is an exploded view showing the interior of the heat exchange module according to an embodiment of the present invention,
9 is a cross-sectional view showing a state in which a spiral structure is formed in the heat exchange module of the present invention.

Hereinafter, the structure of the facility zone heat exchange system using the indirect heat exchange method of the present invention will be described in detail with reference to the accompanying drawings.

1 is a conceptual diagram according to the present invention, wherein the present invention basically includes a compressor 21 for compressing a refrigerant in a system, a condenser 22 for cooling and liquefying the compressed refrigerant, and an expansion valve for expanding the liquefied refrigerant ( 23) and a refrigeration module 2 including an evaporator 24 for discharging cold air of the expanded refrigerant, and this configuration may be substantially the same as a conventional refrigerator (heat pump).

However, the conventional air conditioner structure in which the evaporator is applied to the indoor unit to discharge cool air into the room, and the condenser is applied to the outdoor unit to cool through the outside air is a problem of the difficulty of installation and movement and limitation of the installation location as described above. Accordingly, in the present invention, a heat exchange module that maximizes efficiency and an indirect heat exchange structure solve this problem to implement an air conditioner without an outdoor unit with a built-in condenser, or to improve the structure of a central seawater cooling method such as a large fish market. can do.

As mentioned above, since the configuration of the air conditioner and the heat pump are substantially the same, the air conditioner is exemplified in the following embodiments, but it is obvious that the air conditioner may be used for heating through the same structure and principle of the heat pump.

Figure 2 is a perspective view showing the outer appearance of the heat exchange module according to the present invention, Figure 3 is a cross-sectional view showing the interior of the heat exchange module according to the present invention, Figure 4 is a block diagram showing the electronic configuration and connection relationship according to the present invention.

The refrigeration module 2 is a configuration for circulating refrigerant through a refrigeration cycle and forming cold air, and can be said to have substantially the same configuration as the system of a conventional refrigerator, but in the past, the low-temperature refrigerant passed through an expansion valve is directly cored. The evaporator becomes a core in such a way that cooling is performed by applying to it.

On the other hand, in the present invention, the evaporator 24 in which the cooling action is performed is located in the first heat exchange module 1 to deliver cold air to the received first fluid, and the condenser 22 for generating heat is the second heat exchange module 1 ') There is a big difference in that the so-called indirect method of cooling is performed in which heat is transmitted to the second fluid that is located and accommodated to release cool air and heat to the outside.

Unlike a conventional air conditioner equipped with an indoor unit equipped with an evaporator and an outdoor unit equipped with a condenser, in the present invention, the compressor 21, the condenser 22, the expansion valve 23, and the evaporator 24 are basically the main body 5 ) Is built in, and simple installation can be made without separate construction, and movement can be made relatively easily through a structure such as installing a caster at the bottom of the main body 5.

In the compressor 21, the condenser 22, the expansion valve 23, and the evaporator 24, a primary refrigerant gas, which is a variety of refrigerant gases used in a conventional refrigerator system, is injected and circulated, and an indirect heat exchange method is used. It is applied so that the evaporator 24 and the condenser 22 exchange heat with the refrigerant first and second fluids, respectively, which are secondary refrigerants.

That is, a first heat exchange module (1) that is integrally configured with the evaporator (24) to perform heat exchange with a circulating first fluid, and a first heat exchange module (1) configured integrally with the condenser (22) to perform heat exchange through a circulating second fluid. With 2 heat exchange modules 1', the cold air discharged from the evaporator 24 is transferred to the first fluid, and the heat discharged from the condenser 22 is transferred to the second fluid.

In addition, inside the main body 5, a first pump 32 circulating the first fluid accommodated in the first heat exchange module 1 and a second fluid accommodated in the second heat exchange module 1' A second pump (32') is built-in, is separated from the main body (5), is connected to the first heat exchange module (1) and the first pump (32), the first fluid is circulated inside, and heat exchange with the indoor side is performed. The second core module 3'is connected to the first core module 3 made of and the second heat exchange module 1'and the second pump 32' to circulate a second fluid inside and heat exchange with the outdoor side. ) Is provided.

That is, for the primary refrigerant inside the refrigeration module 2, which is a closed circuit composed of the compressor 21, the condenser 22, the expansion valve 23, and the evaporator 24, the evaporator 24 is transferred to the first fluid and the condenser ( 22) and the second fluid, respectively, and the cold air or heat of the first fluid and the second fluid are applied to the indirect heat exchange method. Through this structure, the flow path through which the primary refrigerant flows must be separated or recombined. Unlike conventional air conditioning systems, if there is no problem in manufacturing, the possibility of leakage of the primary refrigerant can be significantly reduced.

In addition, since disassembly/combination is not performed due to moving installation unless a problem occurs in the compressor 21, the condenser 22, the expansion valve 23, and the evaporator 24, the selection of refrigerant is wider than that of the conventional air conditioner, and for safety reasons. High-efficiency refrigerant, which could not be used for reasons, can also be selected.

In this indirect heat exchange method, as heat exchange is additionally performed compared to the direct heat exchange method, the efficiency is inevitably lowered, so it is most important to maximize the efficiency of the first heat exchange module 1 and the second heat exchange module 1 ′.

The first heat exchange module (1) and the second heat exchange module (1') are one of the features of the present invention, and the first core module (3) for supplying cold air or heat for various purposes including indoor cooling and heating. And the second core module 3'.

The first fluid and the second fluid circulate through a first heat exchange module (1) and a first core module (3), respectively, and a second heat exchange module (1') and a second core module (3'), and basically Water is discharged by discharging the cold air generated in the first heat exchange module 1 through the first core module 3 and the heat generated in the second heat exchange module 1 ′ through the second core module 3 ′. It can be applied to a variety of non-compressible liquids including. However, in the case of the first fluid, heat exchange with the evaporator 24, and as the surface temperature drops to -60°C when absorbing heat from the evaporator in a typical refrigerator, it does not freeze even at temperatures below 0°C and has a wide range of phase transition temperatures. It is preferable to use.

In addition, if the first fluid and the second fluid once filled are used without being replaced for a long period of time when there is no problem in the system, the possibility of bacterial growth and deterioration is high depending on the material, so the present invention has a wide phase transition temperature range. It does not deteriorate easily, and even if leakage occurs, glycol-based substances such as propylene glycol or ethylene glycol, which are harmful to the human body, can be used as it is or mixed with water.

Propylene glycol is a highly desirable material as a heat transfer fluid because it is harmless to the human body enough to be used with edible materials by controlling the temperature range of the phase transition through a kind of antifreeze function, but in addition to various materials used as an antifreeze material for cooling water. It is obvious that the same effect can be obtained by using.

In the conventional air conditioner, the surface temperature of the evaporator is at the level of -30 to -20°C, so that the air being blown can be quickly cooled, but the efficiency rapidly decreases from a certain moment due to the occurrence of frost and condensation on the surface.

Considering that the air temperature blown to the indoor space in a general air conditioner is at 10 to 14°C, the first heat exchange module 1 uses a heat transfer fluid having a characteristic that does not freeze even if cold air at the level of -30°C is generated from the refrigerant. The surface temperature of the first core module 3 is continuously maintained at a level of about 0°C, and smooth cooling can be achieved without generating frost.

In addition, in the present invention, even if the compressor 21 and the heater 11 to be described later are temporarily turned off at an appropriate temperature due to the storage cooling and heat storage functions of the heat transfer fluid, there is no sudden temperature change, so it is very efficient in terms of energy saving.

The first heat exchange module 1 and the second heat exchange module 1 ′ are structures having a cylindrical shape and have substantially the same structure, and thus the structure will be described centering on the first heat exchange module 1.

Specifically, the first heat exchange module 1 and the second heat exchange module 1'have a cylindrical shape to allow fluid flow, and the first body 12 and 12' located inside and the second body 13 and 13 located outside. ').

First spaces 121 and 121 ′ are formed inside the first body 121 12 ′, and first entrance holes 122 and 122 ′ penetrating the inside and outside are formed at one end.

Outside the first bodies 12 and 12 ′, coil portions 14 and 14 ′ formed by surrounding the first bodies 12 and 12 ′ in the form of a spring in a tube having a flow path therein are formed, and the It is configured to sufficiently heat exchange between the fluid flowing inside the coil units 14 and 14 ′ and the fluid flowing outside the first spaces 121 and 121 ′ and the coil units 14 and 14 ′.

Outside of the coil portions 14 and 14', cylindrical second bodies 13 and 13' are covered to form an inner sealing structure. Specifically, one side of the second body (13, 13') is sealed around the first body (12, 12') and the other side is sealed apart from the other end of the first body (12, 12'). , A second space (131, 131') connected to the first space (121, 121') is formed between the inner wall of the second body (13, 13') and the coil part (14, 14'), The sealing structure is completed.

In addition, a second entrance hole (132, 132') penetrating the inside and outside is formed at one end of the second body (13, 13'), and the first entrance hole (122, 122') A flow path leading to the first spaces 121 and 121 ′ and the second spaces 131 and 131 ′ and the second entry and exit holes 132 and 132 ′ is constructed, and both ends of the coil units 14 and 14 ′ are The second bodies 13 and 13 ′ penetrate to the outside and are configured to allow fluid to circulate inside the coil units 14 and 14 ′. At this time, when both ends of the coil parts 14 and 14 ′ pass through the second bodies 13 and 13 ′, sealing is formed between the two structures to prevent leakage of fluid inside the second bodies 13 and 13 ′. It is self-evident.

Even in a conventional heat exchanger, the fluid passing through the coil-shaped flow path exchanges heat with the outer fluid, but in the present invention, the fluid flowing inside the coil portions 14 and 14' and the coil portions 14 and 14' In the heat exchange between external fluids, the inside and outside of the coil units 14 and 14' are divided into first spaces 121 and 121' and second spaces 131 and 131' so that the fluid passes. As a result, it passes through a flow path twice as much as that of the prior art, and exchanges as much as possible with the latent heat of the fluid inside the coil unit.

The structure of the first heat exchange module 1 of this structure can be used in two ways. The first is to circulate the first fluid through a flow path formed through the first entrance hole 122, the first space 121, and the second space 131 and the second entrance hole 132, and the coil unit (14) It is configured so that the refrigerant expanded inside passes and acts as an evaporator, and it can be said to be a preferable application in a heat exchange structure.

In the second method, the heat transfer fluid circulates inside the coil unit 14, and through the first entrance hole 122, the first space 121, and the second space 131 and the second entrance hole 132. The expanded refrigerant passes through the formed flow path and is configured to act as an evaporator. Each method has the same principle that the heat transfer fluid and the refrigerant are exchanged with each other by changing positions of the refrigerant.

That is, in the first method, the inlet of the compressor 21 and the outlet of the expansion valve 23 are connected to both ends of the coil unit 14, respectively.

The first core module 3 is configured for discharging the cold air of the first fluid cooled through the first heat exchange module 1, and both ends thereof are the first inlet hole 122 and the second outlet hole ( A connection pipe 311 connected to 132 and filled with a first fluid together with the first space 121 and the second space 131, and a plurality of heat sinks 312 formed between the connection pipes 311 A core 31 made of a thermally conductive metal material having a, a pump 32 for circulating a heat transfer fluid between the first heat exchange module 1 and the core 31, and, if necessary, a rear surface of the core 31 It will be provided with a blower (F) located at.

In the second method, the inlet of the compressor 21 and the outlet of the expansion valve 23 are connected to the first inlet hole 122' and the second inlet hole 132', respectively, and the core 31' Both ends of the connection pipe 311 are connected to both ends of the coil unit 14, respectively.

Since the first method and the second method have different passage positions between the refrigerant and the first fluid, but have the same practical configuration, a description will be made by showing a drawing based on a more preferable first method.

This method is similar to the second heat exchange module, and the first is formed through the first entrance hole 122', the first space 121', the second space 131', and the second entrance hole 132'. The second fluid is circulated through the flow path, and the refrigerant expanded into the coil unit 14 ′ is configured to act as a condenser, and it can be said to be a preferred application in the heat exchange structure.

In the second embodiment, a second fluid circulates inside the coil unit 14', and the first access hole 122', the first space 121', and the second space 131' The expanded refrigerant passes through a flow path formed through the hole 132 ′ and serves as a condenser. In each embodiment, the heat transfer fluid and the refrigerant have the same principle in that the positions of the heat transfer fluid and the refrigerant are exchanged with each other.

That is, in the first method, the inlet of the expansion valve 23 and the outlet of the compressor 21 are connected to both ends of the coil unit 14', respectively.

The second core module 3'is configured for discharging the heat of the second fluid heated through the second heat exchange module 1', and both ends of the second core module 3' A connection pipe 311 ′ connected to the access hole 132 ′ and filled with a second fluid together with the first space 121 ′ and the second space 13, 13 ′, and the connection pipe 311 ′ A pump for circulating a heat transfer fluid between a core 31 ′ made of a thermally conductive metal material having a plurality of heat sinks 312 ′ formed therebetween, and the second heat exchange module 1 ′ and the core 31 ′ ( 32') and, if necessary, a blower F'located on the rear surface of the core 31'.

In the second method, the inlet of the expansion valve 23 and the outlet of the compressor 21 are connected to the first inlet hole 122' and the second inlet hole 132', respectively, and the core 31' Both ends of the connection pipe 311 ′ are connected to both ends of the coil unit 14 ′, respectively.

In the cooling operation, the refrigeration module 2 operates, and the coil part 14 of the first heat exchange module 1 acts as an evaporator. Likewise, the first fluid is inside and outside the coil part 14, that is, It is cooled by passing through the first space 121 and the second space 131, and the cooled first fluid passes through the core 31 through the pump 32 of the first core module 3, and the core 31 It diffuses the cold air to the whole and discharges the cold air into the room through the blower (F).

At this time, the coil part 14 ′ of the second heat exchange module 1 ′ serves as a condenser, and the second fluid is inside and outside the coil part 14 ′, that is, the first space 121 ′ and the second space 131. ') is heated, and the heated second fluid passes through the core 31' through the pump 32' of the second core module 3', diffuses cold air throughout the core 31, and a blower ( F') to release the hot air to the outdoors.

Through this structure, the cold air for cooling is discharged to the first core module 3 through the first fluid, so that the first heat exchange module 1, the refrigeration module 2, and the second heat exchange module ( By separating 1') from the space where the first core module 3 and the second core module 3'are located, it is possible to widen the range of selection of refrigerants with higher efficiency compared to the prior art.

That is, only the first core module 3 containing only heat transfer fluid harmless to the human body is located in the indoor space requiring cooling and heating, and the positions of the first heat exchange module 1 and the refrigeration module 2 through which the refrigerant passes. Since it is installed in a separate space other than the space in which the 1-core module 3 is installed, it is possible to prevent damage from leakage of the refrigerant, thus widening the selection of refrigerant compared to the conventional air conditioner and enabling the selection of highly efficient refrigerant that was not available.

To this end, the first heat exchange module (1), the refrigeration module (2) and the second heat exchange module (1') are separately provided with a body (5) having a sealed structure, wherein the first heat exchange module (1) And the first core module (3), the second heat exchange module (1') and the second core module (3') are connected to each other, and a pair of connectors (C) through which heat transfer fluid enters and exits are connected to the main body. (5) It is formed outwardly and configured so that only the first core module 3 and the second core module 3'can be separated separately during maintenance.

That is, the first hose module 6 consisting of a flexible tube and connecting the first heat exchange module 1 and the pump 32 and the core 31 to circulate the first fluid, and the second heat exchange module consisting of a flexible tube And a second hose module 6'that connects the pump 32' and the core 31' and circulates the second fluid. The module and the second hose module are configured to be detachable, and valves (V, V') are provided in the first hose module 6 and the second hose module 6'if necessary, so that fluid flows during the separation process. You can also temporarily block it from coming out.

In addition, through this structure, a commercial outdoor unit equipped with a core and a blower in a cooling device is connected to the connector (C, C') through a flexible tube, and the second core module (3') is separated and installed in the device transfer, etc. It can be easily performed, and when the first core module 3 and the second core module 3'are separated or reinstalled prior to installation or for maintenance, a cock for air purge, including removal or replenishment of fluid in the system ( 62, 62') may be provided.

The controller 5 basically controls the heater and refrigeration module 2, pumps 32 and 32', and blowers F and F', and controls the cooling and heating operation. When cooling (11), the refrigeration module (2) is selectively operated. In addition, a temperature sensor 41 that senses the indoor temperature and measures the temperature to maintain the set temperature, a setting unit 43 for receiving a set temperature and detailed operation settings, and an operating state including a set value and a current value. It is provided with an output unit 44 for outputting.

At this time, the first heat exchange module 1, the refrigeration module 2, and the second heat exchange module 1'are built in the main body 5 and can be installed in a separate location from the cooling and heating space. (5) It is provided with a leakage sensor 42 capable of detecting the leakage of refrigerant inside, and when the leakage of the refrigerant is acoustically and visually recognized, an unexpected refrigerant leakage can be quickly recognized and an effective response can be made.

In addition, the connection pipes of the cores 31 and 31 ′ are arranged vertically to allow the heat transfer fluid to flow up and down, but the control unit 5 includes the pumps 32 and 32 ′ according to cooling and heating operations. In the cooling operation, the fluid with cold air moves from the upper side to the lower side of the cores 31 and 31' in a different transfer direction, and in the heating operation, the fluid with heat moves from the lower side to the upper side of the cores 31 and 31'. It is desirable to promote the heat transfer of the core with the convection effect.

In addition, in the present invention, even if the pump 32 is temporarily turned off at an appropriate temperature through such an optimum convection structure, the diffusion of heat or cold air to the core 31 is maintained through convection, and there is no abrupt temperature change, in terms of energy saving. It is very efficient.

5 is a conceptual diagram according to an embodiment of the present invention, which expands the principle of Example 1 applicable to a portable air conditioner that can be installed previously, and is used in a structure that cools seawater in an existing central cooling type building or especially a large fish market. It shows a structure in which individual maintenance is easy by applying the present invention.

In these facilities, a large-sized refrigerant is basically provided, and the condensation heat of the refrigerant is cooled through a cooling tower installed on a roof, etc., and seawater is cooled through the cold air of the evaporator, and a so-called chiller structure is applied.

In such a structure, since the fluid including cooled seawater is inevitably supplied to each facility area through the pipe, problems such as damage to internal materials due to condensation on the pipe surface and the occurrence of mold have been pointed out.

Accordingly, in the present invention, the structure of the cooling tower 7 is installed outside the facility to heat-exchange the cooling water to the outside air, but maintains the structure of the cooling tower 7 that supplies and circulates the cooling water through the cooling water pump 72 to the cooling conduit passage 71 passing through the area of the facility. One body, a first core module (3), a body (5) and a second core module (3') are provided for each zone, and the second core (31, 31') of each zone is the cooling pipe passage (71) It is built in and is configured to perform heat exchange between the cooling water and the second fluid.

In the case of the first core 31, it is used as an indoor unit for cooling, and in the case of the aforementioned fish market, it is configured to cool the seawater in the tank located in each area.

Through this structure, it is possible to save resources for the machine room and management by eliminating the freezer and auxiliary facilities provided in the facility, and above all, it significantly reduces the condensation caused by the temperature of the cooling water flowing through the cooling pipe passage 71, thereby reducing the damage to the facility. Can be reduced.

In addition, even if a problem occurs in the cooling system, a valve located in each area is closed without stopping the entire facility, and then the main body 5 is separately maintained or replaced, so that very efficient operation and management can be achieved.

6 is a perspective view showing the outer appearance of a heat exchange module according to an embodiment of the present invention, FIG. 7 is a cross-sectional view showing the interior of the heat exchange module according to an embodiment of the present invention, and FIG. 8 is an interior of the heat exchange module according to an embodiment of the present invention. It is an exploded view showing.

Previously, the use of the present invention for cooling (cooling) was described as an embodiment, but it can be used for heating by using the first core module 3 and the second core module 3'in reverse using the principle of a heat pump. .

* For this purpose, as the installation must be changed, in the second embodiment of the present invention, only the heater 11 is embedded in the first heat exchange module 1 so that it can be used for heating without changing the installation.

To this end, a rod-shaped heater 11 having an electrode 111 formed at one end of the first body 12 is positioned at the center of the first body 12 to generate heat as power is applied from the outside. That is, a cylindrical first body 12 for fluid flow is formed outside the heater 11, and specifically, the first body 12 is one side of the heater 11 so that the electrode 111 is exposed. ) Is enclosed and the other side is opened while protruding longer than the length of the heater, so that the first space 121 is formed between the heater and the first body 12.

In the heating operation, the controller operates the heater while the refrigeration module is stopped, and passes through the first access hole 122-the first space 121-the second space 131-the second access hole 132. The first fluid to be heated is heated, and the heated heat transfer fluid passes through the first core (31) through the pump (32), spreads heat to the entire first core (31), and transfers the heat to the room through the blower (F). Supply.

9 is a cross-sectional view showing a state in which the spiral structure 15 is formed in the heat exchange module part of the present invention. This is a configuration that can be applied to both the first heat exchange module 1 and the second heat exchange module 1 ′. Each flow path of the first fluid and the second fluid is formed in a spiral shape to increase the residence time to increase thermal efficiency. In the accompanying drawings, the spiral structure 15 is inserted into the second space 131, but it is obvious that it is also provided in the first space 121 to increase heat exchange efficiency.

The rights of the present invention are not limited to the embodiments described above and are defined by what is described in the claims, and that a person having ordinary knowledge in the field of the present invention can make various modifications and adaptations within the scope of the rights described in the claims. It is self-explanatory.

1: first heat exchange module 11: heater 111: electrode
1': second heat exchange module 12: first body 121: first space
122: first entry hole 13: second body
131: second space 132: second entrance hole
14: coil unit 15: spiral structure
2: refrigeration module 21: compressor 22: condenser
23: expansion valve 24: evaporator
3: first core module 31: core 311: connector
3': second core module 312: heat sink 32: pump
F: blower
4: control unit 41: temperature sensor 42: leakage sensor
43: setting unit 44: output unit
5: main body
6: first hose module 62: cock
6': 2nd hose module C: Connector V: Valve
7: cooling tower 71: cooling line 72: cooling water pump

Claims (4)

A compressor 21 for compressing the refrigerant in the system, a condenser 22 for cooling and liquefying the compressed refrigerant, an expansion valve 23 for expanding the liquefied refrigerant, and an evaporator 24 for discharging cold air of the expanded refrigerant. In the heat exchange system with ),
The compressor (21), condenser (22), expansion valve (23) and evaporator (24) are built-in. A first heat exchange module (1) in which heat exchange is performed between a first fluid of a wide antifreeze series and a refrigerant, a first pump (32) for circulating the first fluid of the first heat exchange module (1), and the condenser (22). ) And a second heat exchange module (1') in which heat exchange is performed between the second fluid and the refrigerant circulated integrally with the main body (5);
A first core module (3) connected to the first heat exchange module (1), circulating a first fluid therein, and performing heat exchange with the indoor side;
A cooling tower 7 installed outside the facility to heat-exchange the cooling water with outside air, and supply and circulate the cooling water through the cooling water pump 72 to the cooling line 71 passing through the area of the facility;
Consisting of a leakage sensor 42 capable of detecting and recognizing the leakage of refrigerant inside the main body 5,
The first heat exchange module (1) and the second heat exchange module (1'),
Cylindrical first bodies (12, 12') formed at one end to penetrate the inside and outside, and to form first spaces (121, 121') inside and open at the other end. ), and the coil portions 14 and 14' formed by surrounding the first body 12 and 12' in a spring shape with a tube formed therein, and the first body 12 and 12' at one side. It is enclosed and the other side is sealed apart from the other end of the first body (12, 12'), but is connected to the first space (121, 121') between the inner wall and the coil part (14, 14'). The second spaces 131 and 131 ′ and second entry and exit holes 132 and 132 ′ penetrating the inside and outside of one end portion are formed, and both ends of the coil units 14 and 14 ′ are formed in a cylindrical shape. 2 Body (13, 13'), an electrode 111 is formed at one end, and the electrode 111 is exposed to the outside of the first body (12, 12') inside the first space (121, 121') It has the same structure consisting of a rod-shaped heater 11 installed as,
In the first heat exchange module 1, the evaporator 24 is composed of a coil unit 14, and the pump 32 and the core 31 are formed through a first inlet hole 122 and a second outlet hole 132. 1 connected so that the fluid is circulated,
The second heat exchange module (1') is connected to the cooling conduit (71), and the cooling water is a refrigerant in the coil unit (14') as a second fluid in the first space (121') and the second space (131'). A facility zone heat exchange system using an indirect heat exchange method, characterized in that the is located and configured to perform heat exchange.
The method of claim 1,
A facility using an indirect heat exchange method, characterized in that it further comprises a helical structure 15 protruding to form a spiral flow path through the inner walls of the first spaces 121 and 121 ′ and the outer walls of the second spaces 131 and 131 ′. Zone heat exchange system.
The method of claim 1,
A first hose module (6) made of a flexible tube to connect the first heat exchange module (1), the first pump (32) and the first core (31) to circulate the first fluid; Facility zone heat exchange system using an indirect heat exchange method, characterized in that it further comprises.
The method of claim 3,
The first hose module 6,
A valve (V) that blocks the flow of the first fluid, respectively,
A facility zone heat exchange system using an indirect heat exchange method, characterized in that each includes a connector (C) that can be coupled/separated from the outside of the body (5).

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