JP2014095490A - Air-conditioning system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air-conditioning system for which freezing of a radiation panel during cooling and overheat of the radiation panel during heating and the like are prevented, an overload of a compressor is prevented from becoming a factor of shortening a service life, and energy consumption is prevented from being wasted by an unstable operation of a refrigeration cycle, by improving heat exchange efficiency with air of the radiation panel during cooling and during heating in the air-conditioning system for which an air conditioner and the radiation panel are combined.SOLUTION: An air-conditioning system A1 includes: an air conditioner 9 which has an outdoor unit 90 and an indoor unit 91 incorporated in the refrigeration cycle; and a radiation type heat exchanger R1 which has a heating element 1 configured including pipelines where a refrigerant passes through, and for which pipelines 10, 11 and 12 configuring the heating element 1 are connected in series to a pipeline 92 where the refrigerant passes through and which connects the outdoor unit 90 and the indoor unit. The radiation type heat exchanger R1 includes a straightening plate disposed vertically with a gap where air flows between the straightening plate and the heating element 1, on a front surface side and a back surface side of the heating element 1.

Description

  The present invention relates to an air conditioner and a method for operating the air conditioner. More specifically, in the case where a radiant heat exchanger is incorporated in the refrigerant circuit of the refrigeration cycle of an air conditioner (hereinafter referred to as an air conditioner), indoor air conditioning can be efficiently performed without giving an unpleasant draft feeling to the human body. The present invention relates to an air conditioner that can be effectively performed and a method of operating the air conditioner.

  Indoor air conditioning in general homes and offices is generally performed using packaged air conditioners such as room air conditioners and multi air conditioners. On the other hand, unlike an air conditioner where the indoor unit is a forced convection type, there is also a heat radiation type heat exchange unit that does not cause fan noise and wind noise and does not give unpleasant draft feeling to the human body due to cold air or hot air It is used. Furthermore, an air conditioner in which a radiant heat exchanger is incorporated in a refrigerant circuit of a refrigeration cycle of an air conditioner has been proposed.

As such an air conditioner, there is an air conditioner described in Patent Document 1, for example.
The conventional air conditioner includes a refrigerant circuit <10> in which a compressor <11>, an indoor heat exchanger <13>, and an outdoor heat exchanger <15> are pipe-connected to perform a refrigeration cycle by refrigerant circulation, It includes at least a heating operation in which warm air exchanged with the refrigerant in the indoor heat exchanger <13> is supplied indoors.

  The refrigerant circuit <10> includes a radiation panel <12> that is connected between the discharge side of the compressor <11> and the indoor heat exchanger <13> and absorbs heat from the refrigerant to generate radiant heat indoors. The high pressure of the cycle is configured to be higher than the critical pressure of the refrigerant. As a result, the high temperature region of the refrigerant can be increased, higher temperature radiant heat is supplied from the radiant panel <12> to the room, and the amount of hot air in the indoor heat exchanger <13> is reduced, resulting in a draft feeling. The heating capacity by radiant heat can be greatly increased.

JP 2005-16919 A

  The radiant heat exchanger of the air conditioning apparatus described in Patent Document 1 has a panel structure called a radiant panel, and (1) a floor-standing type separate from the indoor unit (see FIG. 2 in Embodiment 1), (2) An integrated floor-standing type (see FIGS. 5 and 6 in the second embodiment) in which a radiant panel and an indoor heat exchanger are housed in one indoor unit, and (3) the indoor heat exchanger in the casing and the center of the grill Three types of ceiling-embedded types in which a radiation panel is embedded (see FIG. 10 in Embodiment 6) are described.

  In the case of the air conditioner described in Patent Document 1, the indoor atmosphere (room air) in which air conditioning is performed is mainly performed by a fan that sends out room air heated by an indoor heat exchanger. Therefore, in order to make the indoor atmosphere uniform in a short time, it is necessary to increase the air blowing amount of the fan, which gives an unpleasant draft feeling to the human body.

(Object of the present invention)
The present invention provides an air conditioner that combines an air conditioner and a radiant heat exchanger, so that the indoor atmosphere can be made uniform in a short time even if the fan of the indoor heat exchanger has a small air flow rate or is not operated. An object of the present invention is to provide an air conditioner that does not give an unpleasant draft to the human body.

Means taken by the present invention to solve the above problems are as follows.
(1) The present invention
A compressor, an indoor heat exchanger, and an outdoor heat exchanger are connected by piping, and include a refrigerant circuit that circulates a refrigerant to perform a refrigeration cycle, and air that is heat-exchanged with the refrigerant in the indoor heat exchanger Air conditioner supplied indoors by fans,
A radiant heat exchanger incorporated in the refrigerant circuit;
With
The radiant heat exchanger is a heating element disposed from the floor side to the ceiling side in the room,
A rectifying plate that rectifies the air flowing in the vertical direction along the heating element, and is arranged with a gap through which air flows between the heating element and the heating element;
With
It is an air conditioner.

(2) The present invention
The rectifying plate is preferably recommended to surround the heating element or to be disposed on both sides of the heating element.

(3) The present invention
The refrigerant circuit has an expansion valve and a four-way switching valve,
In the radiant heat exchanger, it is preferable and recommended that the piping of the heating element is connected in series to the piping connecting the four-way switching valve and the indoor heat exchanger.

(4) The present invention
The refrigerant circuit has an expansion valve and a four-way switching valve,
Having a first valve in a first pipe connecting the indoor heat exchanger and the expansion valve;
A second pipe connecting the four-way switching valve and the indoor heat exchanger has a second valve;
The second pipe is connected to a third pipe connected to one end of the heating element pipe, and the third pipe has a third valve,
In addition to the pipe of the heating element, the second valve of the second pipe is closer to the outdoor heat exchanger and the first valve of the first pipe is closer to the outdoor heat exchanger. A fourth pipe connected to the end side is connected, and has a fourth valve between the second pipe and the first pipe of the fourth pipe, and the first pipe of the fourth pipe The pipe 98 has a fifth valve between the heating elements,
It is preferable and recommended to have a sixth valve in the second pipe between the fourth pipe and the third pipe.

(5) The present invention
The current plate is
It has a plurality of radiant heat transmission holes that penetrate the inner and outer surfaces, and the inner surface is a reflective surface that reflects the radiant heat radiated from the heating element,
When the radiant heat exchanger is installed indoors, the lower end of the rectifying plate is above the floor surface, the upper end is below the ceiling surface, and between the rectifying plate and the floor surface and between the rectifying plate and the ceiling surface. It is preferable and recommended that a gap for circulating air is formed between the two.

(6) The present invention
The piping of the heating element is preferably a flat tube having a plurality of flow paths parallel to the longitudinal direction inside, or a tube having a plurality of strips parallel to the longitudinal direction on the inner surface.

(7) The present invention
The piping of the heating element is a parallel type or a series type in which the refrigerant flow direction is a vertical direction, and the gas-liquid two-phase refrigerant passes from the upper side to the lower side of the pipe during cooling, and the gas-phase refrigerant is connected to the pipe during heating. It is preferable and recommended to be connected to piping connecting the outdoor heat exchanger and the indoor heat exchanger so as to pass from the lower side to the upper side.

(8) The present invention
The air conditioner is a multi air conditioner having a plurality of indoor heat exchangers in which pipes are connected in parallel to one outdoor heat exchanger, and the radiation heat exchanger is replaced with the plurality of indoor heat exchangers. It is also possible to adopt a configuration in which one or more are installed corresponding to each of the above.

(9) The present invention
It is preferable and recommended that a ventilation guide member for guiding the air flowing inside the current plate to flow smoothly is disposed on the upper side and / or the lower side of the heating element.

(10) The present invention
On the surface of the heating element, one or more selected in a coating having a function of excellent heat dissipation such as knurling, anodizing, or a coating for heat dissipation, a deodorizing function, an antibacterial function, or an adsorption decomposition function of a volatile organic compound It is preferred and recommended to apply multiple processes or coatings.

(11) The present invention
A compressor, an indoor heat exchanger, and an outdoor heat exchanger are connected by piping, and include a refrigerant circuit that circulates a refrigerant to perform a refrigeration cycle, and air that is heat-exchanged with the refrigerant in the indoor heat exchanger An air conditioner supplied indoors by a fan, and a radiant heat exchanger incorporated in the refrigerant circuit,
The radiant heat exchanger is a heating element disposed from the floor side to the ceiling side in the room,
In the operation of the air conditioner, which is provided with a gap through which air flows between the heating element and a rectifying plate that rectifies the air flowing in the vertical direction along the heating element,
Operating the radiant heat exchanger and the indoor heat exchanger simultaneously or selectively;
It is the operation method of an air conditioner.

(12) The present invention
A compressor, an indoor heat exchanger, and an outdoor heat exchanger are connected by piping, and include a refrigerant circuit that circulates a refrigerant to perform a refrigeration cycle, and air that is heat-exchanged with the refrigerant in the indoor heat exchanger An air conditioner supplied indoors by a fan, and a radiant heat exchanger incorporated in the refrigerant circuit,
The radiant heat exchanger is a heating element disposed from the floor side to the ceiling side in the room,
In the operation of the air conditioner, which is provided with a gap through which air flows between the heating element and a rectifying plate that rectifies the air flowing in the vertical direction along the heating element,
Operate the radiant heat exchanger and stop the fan of the indoor heat exchanger in a state in which the circulation of the refrigerant to the indoor heat exchanger is maintained.
It is the operation method of an air conditioner.

  The structure of the heating element is, for example, a structure in which a pipe for passing a refrigerant is arranged in a flat plate shape, or a structure in which a pipe for passing a refrigerant is arranged in a cylindrical shape. Further, the shape of the rectifying plate around the side of the heating element is not particularly limited, and is appropriately formed according to the structure of the heating element, such as a circular tube, a square tube, a flat plate, or a curved plate.

(Function)
The operation of the air conditioner according to the present invention will be described.
The rectifying plate of the radiant heat exchanger promotes the flow of air along the heating element (including the meaning of being part of the overall circulation (convection) of the air in the room where the radiant heat exchanger is installed). Since heat exchange by the heating element is performed more smoothly and efficiently, the heating element is not easily frozen during cooling or overheating during heating.
As a result, the advantages of the air conditioner and the advantages of the radiant heat exchanger can be combined to complement each other, so that the temperature control of the air conditioning with the air conditioner can be performed efficiently and effectively. Details will be described below.

First, the operation of the radiant heat exchanger when indoor heating is performed will be described.
During heating, the air in the vicinity of the heating element is heated by conduction heat or radiant heat, and a flow of air from the bottom to the top is generated along the heating element. As a result, external air flows from the gap between the radiant heat exchanger and the lower part of the floor through the lower openings between the rectifying plates, and is heated by the heating element while rising between the rectifying plates. Is continued. Moreover, the flow volume of the flowing air increases by what is called a chimney effect by providing the space | gap which air flows between heat generating bodies and arrange | positioning a baffle plate.

  The heated air that rises between the heating element and the rectifying plate is discharged to the outside through a top opening between the rectifying plates through a gap between the radiant heat exchanger and the ceiling surface at the top. The discharged air has an increased flow velocity due to the chimney effect, and reaches a position considerably away from the radiant heat exchanger along the ceiling surface. As the air moves, the air exchanges heat with the room air, cools and descends, moves to the floor side, enters again from the lower part of the radiant heat exchanger, and is heated and raised by the heating element. In this way, the room air circulates and convects the entire room while being heated by the heating element.

  On the other hand, part of the radiant heat radiated from the heating element passes through each radiant heat transmission hole formed in each rectifying plate and is released into the room. The rate at which the radiant heat passes through the radiant heat transmission hole depends on the aperture ratio of the radiant heat transmission hole. Thereby, radiant heat propagates to the user, and the user can directly feel the warmth. Radiant heat is effectively used to warm walls, ceilings, floors, etc., and indoor air is indirectly heated by warmed walls, ceilings, floors, etc.

  Also, of the radiant heat, the radiant heat that could not pass through each radiant heat transmission hole is reflected by the reflecting surface on the inner surface side of each rectifying plate, and further diffused between the heating element and the reflecting surfaces of other rectifying plates. Occur. As a result, part of the radiant heat is released into the room through each radiant heat transmission hole, and part is released into the room from the upper and lower openings between the current plates. Furthermore, a part of each rectifying plate is heated to raise the temperature, and radiant heat from each rectifying plate is released into the room.

  As described above, according to the radiant heat exchanger according to the present invention, when the room is heated, the room is heated well by the radiant heat together with the heat moving by the convection of the air while repeatedly reflecting and releasing the radiant heat. The entire room can be effectively air-conditioned. In addition, this makes it possible to reduce the amount of air blown from the fan of the indoor heat exchanger of the air conditioner or to stop the fan, and consequently suppress the draft feeling caused by the air blown from the fan that the user feels. Or can be eliminated.

  When performing indoor cooling, unlike the case of heating, the air is cooled by the heating element, so the air flow along the heating element and each rectifying plate is directed downward from above, and Although the flow is almost opposite to that in the case of the heating, the air conditioning of the entire room can be effectively performed, the draft feeling due to the air blown from the fan felt by the user can be suppressed, etc. , Has the same action as in the case of the heating.

  The heat energy generated by the circulation of the refrigerant is radiated heat that is released and absorbed through the radiant heat transmission holes of the rectifying plate, and radiant heat and convection heat that is released by the heat generated on the surface of the rectifying plate by the heat energy of the surface of the heating element. Then, the indoor air is convected by the heat energy on the surface of the heating element, and air conditioning is performed by air convection and radiant heat.

  In addition, the air flow generated by the heat energy from the heating elements inside each rectifying plate preferably takes the air into each rectifying plate and promotes the air flow through the space inside each rectifying plate. The air in the indoor area can be comfortably air-conditioned by having the effect of promoting the heat transfer by convection and the heat exchange with the indoor air.

  Furthermore, the heat generating elements cannot be directly touched by hand due to the structure in which the heat generating elements are built inside the current plates. Therefore, the heating element may become hot during heating with a gas phase refrigerant or the like, but since the user does not touch the heating element by mistake, it is safe for the user.

  Further, during cooling, the condensed water condensed on the surface of the heating element is not touched by hand and is hygienic, and the user is not suddenly wet with the condensed water. Furthermore, since the heating element itself hardly receives external force, it is possible to prevent the heating element from being deformed or damaged by pressure or impact from the outside.

  Accordingly, the strength against external force is not so much required, and any structure having at least the strength capable of withstanding the pressure of the fluid may be used. The choice of materials used for the heating element can be expanded. Moreover, the danger of accidentally hitting the heat generating part and being injured can be reduced.

  In addition, when liquid phase refrigerant or refrigerant gas is used, since the pressure is high, heat is applied to the surface of a metal refrigerant tube or a precision flat tube made of metal having high pressure resistance and good conductivity, such as copper or aluminum. What processed high emissivity can also be used. Since the synthetic resin tube and the carbon fiber tube are relatively lightweight, the weight of the apparatus can be reduced.

  Thereby, the burden of the carrying-in work and assembly work of the material in the case of installation work is reduced, and the cost of installation work can be held down. Further, by reducing the weight of the device, for example, the deformation stress during an earthquake is reduced, and the reinforcement work for supporting it can be minimized. In this way, various restrictions on installation are reduced, and the risk of the device falling due to an earthquake is reduced. Therefore, it can contribute to the safety and security of the user.

  Also, by using a material with high far-infrared radiation capability for the heating element or by applying surface treatment, the movement of the radiant heat is promoted, and as described above, the radiation effect of the heating element through the radiant heat transmission hole and the radiant heat It functions as a high-efficiency radiant cooling and heating device having a radiation effect from the surface of the current plate having the transmission holes.

If the piping of the heating element is a flat tube having a plurality of flow paths parallel to the longitudinal direction, each flow path is subdivided into a plurality while ensuring a sufficient area on the outer surface of the pipe for heat exchange. It has become. As a result, the position of each flow path becomes a structure close to the outer surface, so that more efficient heat exchange is possible compared to a circular tube or the like where the central portion of the flow path is slightly far from the outer surface. .
In addition, since the pipe has a pipe body having a plurality of strips parallel to the longitudinal direction on the inner surface, the area of the inner surface of the pipe is larger than that of a simple pipe body, so that more efficient heat exchange is possible.

The piping of the heating element is a parallel type or series type in which the refrigerant flow direction is vertical, and the gas-liquid two-phase refrigerant passes from the upper side to the lower side during cooling, while the gas-phase refrigerant is located under the pipe during heating. What is connected to the pipe through which the refrigerant connecting the outdoor unit and the indoor unit passes so as to pass from the side to the upper side operates as follows.
That is, during cooling, the temperature near the ceiling above the upper part is usually high, and the heat energy for re-vaporization is large. Therefore, the heat efficiency is better when it is introduced from the top. In the process where the gas-liquid two-phase refrigerant moves down the pipe while being absorbed by heat while absorbing heat, it is efficiently exchanged into gas phase refrigerant, and the gas phase refrigerant is transferred to the outdoor unit. Led.

  Further, in the parallel type, the upper header or the like can be made larger in cross section than the introduction pipe so that the refrigerant introduced from the pipe is uniformly distributed to the branched pipe. In this case, since the upper header or the like has a large cross section (space), re-vaporization is promoted because the pressure is released when the refrigerant enters the upper header or the like.

  Further, during heating, the temperature in the vicinity of the lower floor is usually low, and heat exchange efficiency is improved by introducing from the lower part where the temperature difference is large in order to perform heat dissipation by heating. That is, the gas-phase refrigerant is guided to the pipe branched from the lower header or the like, and moves upward through the pipe while condensing and dissipating heat. In that case, since the refrigerant is in a gas phase, gravity hardly acts on the refrigerant, and the refrigerant can move smoothly upward. In addition, heat exchange by heat dissipation of the heating element is also efficiently performed, and a part of the refrigerant changes into a liquid phase refrigerant due to condensation, and is led to an indoor unit as a gas-liquid two phase refrigerant. The refrigerant is further condensed and dissipated in the indoor unit of the air conditioner, and the refrigerant is guided to the outdoor unit.

  The gap between the both sides of both rectifying plates is closed with a closing member, the heating element is surrounded by the rectifying plate and the closing member, and the upper and lower portions are formed into a cylindrical body. Since there are blocking members on both sides, the flow of air passing between the current rectifying plates becomes a more ordered flow, and the chimney effect works more effectively.

  A ventilation guide member that guides the air flowing inside each rectifying plate to flow smoothly on the upper side and / or lower side of the heating element is the air flow caused by the chimney effect using each rectifying plate. Can be performed more efficiently.

  An air conditioner equipped with a radiant heat exchanger having such an action has a structure in which the radiant heat exchanger directly passes the refrigerant through the heating element, so that it can be started up quickly and a heat radiation effect can be obtained in a short time. In addition, the adjustment of the room temperature can be easily controlled by using the control of the air conditioner. As a result, a circuit configuration for adjusting the temperature of the air dedicated to the radiant heat exchanger is unnecessary, and the cost of the system can be reduced.

  That is, at the time of heating, since the gas-phase refrigerant that has become high temperature and high pressure in the compressor by the refrigeration cycle is first supplied to the radiant heat exchanger, the temperature of the heating element reaches the temperature of the refrigerant in a relatively short time. For example, radiant heat corresponding to the surface temperature of the heating element, such as about 60 ° C. to 80 ° C., is released.

  Since the radiant heat from this radiant heat exchanger can directly affect the user's experience, the start-up of the air conditioning until comfort is obtained is faster than in the case where heating is performed by an air conditioner alone. In addition, since radiant heat propagates directly to the floor, walls, ceiling, and human body, warmth can be obtained from the feet and it can be felt warm even if the temperature is set low, thus contributing to energy saving. Thereafter, the refrigerant in the gas phase state is sent to the indoor unit serving as a condenser of the air conditioner, and the indoor unit performs heating.

  Also, during cooling, the liquid-phase refrigerant liquefied and generated by the outdoor heat exchanger of the outdoor unit by the refrigeration cycle is decompressed by the expansion valve, and the low-temperature gas-liquid two-phase refrigerant generated thereby is Supply to the indoor unit, let the indoor unit act as an evaporator, take the heat of the air and cool it. Then, the gas-liquid two-phase refrigerant is sent to the radiant heat exchanger, the heating element of the radiant heat exchanger is operated as an evaporator, and radiant cooling is performed by radiation of cold heat from the heating element.

  As described above, in the cooling operation, the hybrid operation that preferentially or preferentially moves the air conditioner is possible, and the delay of the start-up of the air conditioner by the conventional radiation panel (radiant heat exchanger) is improved. Can do. In addition, the subsequent radiant heat (cold heat) action gradually lowers the temperature of the floor, walls, and ceiling, and these synergistically affect the user's experience, so comfort can be obtained even when the air conditioner is weakly operated. it can.

  Moreover, the problem in the operation | movement of the radiation cooling in a refrigerating cycle can be improved at the time of cooling. That is, the evaporator uses the air conditioner indoor unit as an evaporator, and the gas-liquid two-phase refrigerant that has been heated by the heat of the room air to become a partial liquid phase is, for example, about 7 ° C to 15 ° C. Since this refrigerant is passed through the heating element of the radiant heat exchanger, the heating element does not freeze. Furthermore, since the evaporation of the refrigerant is promoted by heating, the vaporized refrigerant is sufficiently vaporized and introduced into the compressor as the gas phase refrigerant is increased, thereby reducing the load on the compressor, It can contribute to extending the life of the compressor and can also contribute to energy saving.

  Because the air-free and silent air-conditioning function of the radiant heat exchanger is demonstrated, the temperature unevenness of the walls, floors, and ceilings is reduced, and comfort can be obtained even if the air volume by the indoor unit fan is lowered. An unpleasant draft due to a large air volume from the indoor unit of the air conditioner can be suppressed. Thereby, it can contribute to suppressing the operation of the fan of the indoor unit, the life of the motor of the fan can be extended, and the life of the indoor unit can be extended.

  The air conditioner is a so-called hybrid type air conditioner in which a radiant heat exchanger installed indoors is incorporated in the refrigeration cycle of the air conditioner. By operating a normal air conditioner using a controller, it is possible to control the operation of a multifunctional air conditioner such as a dry operation, an air purifying function such as a filter function, or a humidifying function, and an operation control of a radiant heat exchanger. . Furthermore, in energy-saving operation with a light load, the refrigerant may be routed only to the outdoor unit and the heat radiation room unit without passing through the indoor unit of the air conditioner. It can be used only for the function of sensing the temperature and controlling the outdoor unit.

In the present invention, a radiant heat exchanger used in combination with an air conditioner surrounds a heating element with a rectifying plate, or rectifying plates are arranged on the front side and the back side of the heating element. For this reason, the convection of room air is promoted by the so-called chimney effect, heat can be efficiently transferred, and the heat radiated from the heating element can be efficiently radiated into the room and used for air conditioning. The indoor air conditioning can be made uniform by combining heat transfer by convection and air conditioning by radiant heat.
Therefore, the amount of air blown from the fan is not so necessary, or the fan does not need to be operated, so that the draft feeling given to the human body can be reduced or eliminated.

  The present invention provides an air conditioner that combines an air conditioner and a radiant heat exchanger, and improves the efficiency of heat exchange with the room air of the radiant heat exchanger during cooling and heating, thereby improving the efficiency of the radiant heat exchanger during cooling. It is possible to prevent the heating element from freezing or overheating of the heating element of the radiant heat exchanger during heating. Therefore, it is possible to provide an air conditioner in which overloading of the compressor does not cause a shortening of the life or waste of energy consumption due to unstable operation of the refrigeration cycle does not occur.

BRIEF DESCRIPTION OF THE DRAWINGS Schematic explanatory drawing which shows 1st Embodiment of the air conditioner which concerns on this invention. The air conditioner shown in FIG. 1 is shown, (a) is a block diagram during heating, and (b) is a block diagram during cooling. BRIEF DESCRIPTION OF THE DRAWINGS The 1st Embodiment of the radiation type heat exchanger which concerns on this invention is shown, (a) is a front view, (b) is AA sectional drawing in (a). Front view explanatory drawing of the state which removed the rectifying plate of the front side and back side of the radiation type heat exchanger shown in FIG. The structure of a radiation type heat exchanger is shown, (a) is an BB expanded sectional view in Fig.3 (a), (b) is an expanded cross-sectional view of a vertical pipe, (c) is other of piping of a heat generating body. Sectional drawing which shows an example. Schematic explanatory drawing which shows 2nd Embodiment of the air conditioner which concerns on this invention. The other form of the radiation-type heat exchanger which concerns on this invention is shown, (a) is front view explanatory drawing which notched the front side rectifying plate, (b) is CC sectional drawing in (a). The other embodiment of the radiation type heat exchanger which concerns on this invention is shown, The flow of the air at the time of arrange | positioning a ventilation guide member to the upper part and the lower part of a heat generating body is shown, (a) is at the time of heating, (b) is Explanatory drawing at the time of air conditioning. Explanatory drawing which shows the further another form of the radiation type heat exchanger which concerns on this invention, and shows the example which represented the advertisement character on the surface of the baffle plate.

Embodiment
The present invention will be described in detail based on the embodiments shown in the drawings.
First, FIG. 1 and FIG. 2 will be referred to. In FIG. 2, pipes 92a and 92b, which will be described later for convenience, are combined into a pipe 92, and valves V1 to V6 are omitted.
Air conditioner A1 is 1st Embodiment of the air conditioner which concerns on this invention, The air conditioner 9 which has the outdoor unit 90 and the indoor unit 91 incorporated in the refrigerant circuit of the refrigerating cycle, the outdoor unit 90, and the indoor unit The pipes 92 and 98 to be described later connecting 91 are provided with a radiation heat exchanger R1 to which a pipe of the heating element 1 to be described later is connected.

  The air conditioner 9 is a known room air conditioner having a cooling / heating function and used in a general household. As shown in FIG. 2, the outdoor unit 90 of the air conditioner 9 includes an outdoor heat exchanger 93 that functions as an evaporator or a condenser, and also includes a compressor 94, a four-way switching valve 95, and an expansion valve 96. . The indoor unit 91 functions as a condenser when the outdoor heat exchanger 93 functions as an evaporator, and performs indoor heat exchange that functions as an evaporator when the outdoor heat exchanger 93 functions as a condenser. A container 97 is provided.

The radiant heat exchanger R1 is compressed from the four-way switching valve 95 to the indoor heat exchanger 97 through the second pipe 92 through which the refrigerant passes, specifically during heating (see FIG. 2 (a)). The heating element 1 described later is connected and incorporated in the path of the pipe 92 through which the high-temperature and high-pressure gas-phase refrigerant in the machine 94 flows toward the indoor heat exchanger 97.
The pipe 98 that is the first pipe is a pipe that sends the gas-phase refrigerant expanded by the expansion valve 96 to the indoor heat exchanger 97 during cooling.
In the present embodiment, one radiant heat exchanger is installed, but a plurality of radiant heat exchangers may be connected in series or in parallel.

  As shown in FIG. 1, a pipe 92 b, which is a third pipe connected to the lower header pipe 11 of the heating element 1 to be described later, is connected to the pipe 92, and the pipe 92 and the pipe 98 are further closer to the indoor unit 91. Is connected to a pipe 92 a which is a fourth pipe connected to the upper header pipe 10 of the heating element 1. A valve V3 that is a third valve is provided in the path of the pipe 92b, and a valve V5 that is a fifth valve is provided between the upper header pipe 10 and the pipe 92 of the pipe 92a.

  A valve V4, which is a fourth valve, is provided at a portion connecting the pipe 92 and the pipe 98 in the pipe 92a. In addition, a valve V6 that is a sixth valve is provided between a portion where the pipe 92a is connected to a portion where the pipe 92a is connected in the pipe 92. Further, in the pipe 92 and the pipe 98, between the portion where the pipe 92a is connected to the indoor unit 91, a valve V2 that is a second valve is provided in the pipe 92, and a valve V1 that is the first valve is provided in the pipe 98. Is provided.

Next, the radiant heat exchanger R1 that is a room unit connected to the air conditioner 9 and incorporated in the air conditioner A1 will be described in detail.
Reference is mainly made to FIGS.
The radiant heat exchanger R1 is described below between the heating element 1 arranged in the vertical direction (vertical), the decorative frames 2 and 2a that support the heating element 1, and the heating element 1 on both sides of the heating element 1. The rectifying plates 3, 3a, 3b on the front side (front side in FIG. 3 (a), left side in FIG. 3 (b)) provided with the necessary gaps 39, 49 so as to be arranged in the vertical direction (vertical) There are rectifying plates 4, 4a, 4b on the back side.

  The heating element 1 is fixed inside the wooden decorative frames 2 and 2a. The decorative frames 2 and 2a constitute a closing member and are arranged in parallel with each other at a predetermined interval on the left and right and in the vertical direction. L plate-like lower fixing members 20 and 21 for fixing to the floor surface 5 are fixed to the inner surface side of the lower ends of the decorative frames 2 and 2a. The material of the decorative frames 2 and 2a is not limited to wood, and for example, a metal such as a synthetic resin or aluminum can be used.

  Further, L plate-like upper fixing members 22 and 23 for fixing to the ceiling surface 6 are fixed to the inner surface side of the upper end portions of the decorative frames 2 and 2a. The horizontal portions (reference numerals omitted) of the lower fixing members 20 and 21 in contact with the floor surface 5 are flush with the lower ends of the decorative frames 2 and 2 a, and the horizontal portions of the upper fixing members 22 and 23 in contact with the ceiling surface 6. The part (reference numeral omitted) is located slightly higher than the upper ends of the decorative frames 2 and 2a.

  A heating element 1 made of metal such as aluminum or copper is attached between the decorative frames 2 and 2a by fixing both ends of the upper header tube 10 to the inner surfaces of the decorative frames 2 and 2a via the fixtures 24 and 25. Yes. A reinforcing member 26 is fixed in the horizontal direction at an intermediate portion between the decorative frames 2 and 2a in the vertical direction, and reinforces the strength of the decorative frames 2 and 2a as a frame. The reinforcing member 26 also has a function of fixing the interval between the vertical tubes 12 described later of the heating element 1.

The heating element 1 has an upper header pipe 10 and a lower header pipe 11 arranged in parallel with the upper header pipe 10 at a predetermined interval downward. Both ends of the upper header pipe 10 and the lower header pipe 11 are closed in an airtight and liquid tight manner, respectively.
The height at which the upper header tube 10 is arranged is set to a position slightly lower than the upper ends of the decorative frames 2 and 2a as shown in FIG. The height at which the lower header tube 11 is disposed is set at a position higher than the lower ends of the decorative frames 2 and 2a.

  The upper header pipe 10 and the lower header pipe 11 are connected by a large number of vertical pipes 12 provided in parallel with each other at a required interval, and the upper header pipe 10, the lower header pipe 11 and the vertical pipes 12 communicate with each other. As shown in FIG. 5B, each vertical pipe 12 is a metal flat pipe having a plurality of flow paths 120 parallel to the longitudinal direction therein. In the vertical pipe 12, each flow path 120 is subdivided into a plurality while ensuring a sufficient area of the outer surface for heat exchange. Thereby, since the position of each flow path 120 becomes a structure close | similar to an outer surface, respectively, efficient heat exchange is attained.

  A supply / exhaust pipe 13 connected to the pipe 92 is connected to the upper end of the upper header pipe 10 in FIG. In addition, a supply / discharge pipe 14 is connected to the left end of the lower header pipe 11 in FIG. The upper and lower ends of the supply and discharge pipes 13 and 14 are extended to a position slightly below the horizontal part of the upper fixing members 22 and 23. The upper header tube 10, the lower header tube 11, and the surfaces of the vertical tubes 12 are provided with a heat dissipation coating for improving heat dissipation.

  Further, a drain pan 15 that is a bowl-shaped water collecting member that is open at the top is disposed slightly below the lower header pipe 11 with both ends fixed between the decorative frames 2 and 2a. A drain pipe 16 is connected to one end side of the bottom of the drain pan 15. During cooling, the condensed water condensed on the surface of the heating element 1 is dropped onto the drain pan 15 and appropriately collected through the drain pipe 16 and processed.

  The rectifying plates 3, 3a, 3b are detachably mounted on the front side of the decorative frames 2, 2a, and the rectifying plates 4, 4a, 4b are also detachably mounted on the back side. The rectifying plates 3, 3a, 3b and the rectifying plates 4, 4a, 4b are formed with, for example, a plurality of grooves formed in the bent portions on both side edges on the inner surfaces of the front and back sides of the decorative frames 2, 2a. Although it is a structure that is hooked and mounted on a pin, other known means can also be adopted.

  The rectifying plates 3, 3 a, 3 b and the rectifying plates 4, 4 a, 4 b are each mounted in three upper and lower stages, and as a whole, are large enough to block the entire width and height between the decorative frames 2, 2 a. It is rectangular. Between the heating element 1 and the rectifying plates 3, 3a, 3b, and between the heating element 1 and the rectifying plates 4, 4a, 4b, air gaps 39, 49 are formed. The lowermost rectifying plates 3b, 4b are formed smaller than the other rectifying plates 3, 3a, 4, 4a, and maintenance of the drain pan 15 can be performed by removing them.

  The rectifying plates 3, 3 a, 3 b and the rectifying plates 4, 4 a, 4 b are made of aluminum, and have a large number of radiant heat transmission holes 30, 40 (see FIG. 7) penetrating the front and rear surfaces over almost the entire surface while leaving a part of the peripheral edge. A punching metal (or punching board) formed. The inner surfaces of the rectifying plates 3, 3 a, 3 b and the rectifying plates 4, 4 a, 4 b are reflecting surfaces 31, 41 that reflect radiant heat. The aperture ratios of the radiant heat transmission holes 30 of the rectifying plates 3, 3a, 3b and the radiant heat transmission holes 40 of the rectifying plates 4, 4a, 4b are set to 50% in the present embodiment.

For example, the radiant heat transmission holes may be formed only in the rectifying plates 3, 3a, 3b on one side and not in the rectifying plates 4, 4a, 4b on the other side. 3, 3a, 3b, 4, 4a, 4b can be formed only on an arbitrary current plate.
In the former, it becomes possible to make the radiant heat from the rectifying plates 3, 3 a, 3 b stronger than the rectifying plates 4, 4 a, 4 b, and even when the radiant heat exchanger R 1 is located near the wall surface, the radiant heat is weak. By directing the current plate 4, 4a, 4b side to the wall, the influence of heat on the wall surface can be reduced.

  The arrangement and number of the radiant heat transmission holes 30 and 40, the shape of the holes, and the aperture ratio are not particularly limited, and can be appropriately set with various designs. In the present embodiment, the projections 31 and 41 are embossed to form fine irregularities in order to promote diffuse reflection of radiant heat. Moreover, since the rectifying plates 3, 3a and the rectifying plates 4, 4a are made of aluminum, the heat transfer effect is excellent, and the efficiency of heat exchange with air is further improved.

  Further, for example, a coating having a deodorizing function, an antibacterial function, a volatile organic compounds (VOC) adsorption / decomposition function, or the like is applied to the inner surface of the rectifying plates 3b, 4b close to the drain pan 15, so that the indoor air It can also be cleaned. Such coating can also be applied to other portions of the radiant heat exchanger R1, for example, the surface of the heating element 1, the rectifying plates 3, 3a, and the rectifying plates 4, 4a.

  Further, the rectifying plates 3, 3 a, 3 b and the rectifying plates 4, 4 a, 4 b have the entire peripheral portion protruding from the peripheral edge of the heating element 1, and have a wider surface than the heating element 1 in front view and rear view. The upper ends of the rectifying plate 3 and the rectifying plate 4 are set flush with the upper ends of the decorative frames 2 and 2a, and the lower ends of the rectifying plates 3b and 4b are positioned slightly above the lower ends of the decorative frames 2 and 2a. Is set to

  The rectifying plates 4, 4 a, 4 b on the back side of the rectifying plates 3, 3 a, 3 b on the front side and the decorative frames 2, 2 a on the both ends in the width direction are integrated to form an upper opening 27, lower end on the upper end portion. It becomes a flat square cylinder which has the lower opening part 28 in a part. Thus, since the structure surrounding the heating element 1 is a cylinder, the chimney effect that promotes convection of room air is more excellent.

  In addition, by setting the size and mounting positions of the rectifying plates 3, 3a, 3b and the rectifying plates 4, 4a, 4b as described above, radiation heat exchange is performed as shown in FIGS. 3 (a) and 3 (b). When the vessel R1 is fixed to the floor surface 5 and the ceiling surface 6, a lower gap 50 is formed between the floor surface 5, the rectifying plate 3b and the lower end of the rectifying plate 4b, and the ceiling surface 6, the rectifying plate 3 and the rectifying plate An upper gap 60 is formed between the upper ends of the plates 4.

(Function)
With reference to FIG. 1 thru | or FIG. 5, the effect | action of air conditioner A1 provided with the radiation type heat exchanger R1 is demonstrated.
In the air conditioner A1, when the indoor unit 91 and the radiant heat exchanger R1 are operated together with the outdoor unit 90, the valves V4, V6 are closed and the other valves V1, V2, V3, V5 are opened. To leave. Further, when the operation of the indoor unit 91 is stopped and the radiation heat exchanger R1 is operated, the valves V1, V2, and V6 are closed, and the other valves V3, V4, and V5 are opened. Furthermore, the valves V3, V4, and V5 are closed, the other valves V1, V2, and V6 are opened, the operation of the radiant heat exchanger R1 is stopped, and the indoor unit 91 can be operated.
The operation of each valve V1 to V6 can be performed by automatic control or manual operation.

(Operation of radiation type heat exchanger R1)
The radiant heat exchanger R1 of the air conditioner A1 is fixed to the floor surface 5 by the lower fixing members 20, 21 at a position slightly away from the wall surface 8 of the radiant heat exchanger R1, and the upper fixing member 22, It is fixed to the ceiling surface 6 by 23 and installed indoors.
The supply / exhaust pipe 13 and the supply / exhaust pipe 14 of the heating element 1 of the radiant heat exchanger R1 are connected in series in the path of the pipe 92 as shown in FIG.

  When the room is heated by the radiation heat exchanger R1, the heating element 1 is heated by supplying a high-temperature gas-phase refrigerant to the heating element 1 from the supply / discharge pipe 14. At this time, the gas-phase refrigerant passes from the lower side to the upper side of each vertical pipe 12 and heats the air near the floor surface 5 where the lower temperature is lower and the temperature difference is large. Well, effective heating can be performed. Further, the gas-phase refrigerant is guided to each vertical pipe 12 branched from the lower header 11 and moves upward while condensing and dissipating heat. In that case, since the refrigerant is in a gas phase, gravity hardly acts on the refrigerant, and the refrigerant can move smoothly upward.

In addition, heat exchange with the air by heat radiation of the heating element 1 is also efficiently performed, and the refrigerant partially changes into a liquid phase refrigerant due to condensation, and is led to the indoor unit 91 as a gas-liquid two phase refrigerant. The refrigerant is further condensed and radiated by the indoor heat exchanger 97 of the indoor unit 91, and the refrigerant is guided to the outdoor heat exchanger 93 of the outdoor unit 90.
In this way, the air in the vicinity of the heating element 1 is heated by the radiant heat, and an upward air flow from the bottom along the heating element 1 occurs. In the following description of the air flow, FIG. 8A to be described later is referred to for convenience.

  Thereby, external air flows from the gap 50 on the lower floor surface 5 side through the lower opening 28 between the rectifying plate 3b and the rectifying plate 4b. The inflowing air is further heated by the heating element 1 while moving up the air gaps 39 and 49 inside the rectifying plates 3, 3 a and 3 b and the rectifying plates 4, 4 a and 4 b, thereby continuing the air flow. . Further, by forming a flat rectangular tube body by the rectifying plates 3, 3a, 3b and the rectifying plates 4, 4a, 4b and the decorative frames 2, 2a on the front side and the back side of the heating element 1, the chimney effect is obtained. A sufficient flow rate of convective room air is ensured.

  The heated air rising through the gaps 39 and 49 passes through the upper opening 27 between the rectifying plate 3 and the rectifying plate 4 and is discharged to the outside from the gap 60 on the upper ceiling surface 6 side. The discharged air has an increased flow velocity due to the chimney effect, and reaches a position that is considerably away from the radiant heat exchanger R <b> 1 along the ceiling surface 6. In addition, the air exchanges heat with room air along with this movement, cools and descends, moves to the floor 5 side, enters again from the lower part of the radiant heat exchanger A1, and is heated by the heating element 1 and rises. . In this way, the room air circulates throughout the room while being heated by the heating element 1.

  On the other hand, a part of the radiant heat radiated from the heating element 1 (in this embodiment, since the opening ratio of the radiant heat transmission holes 30 and 40 is 50%, the transmission ratio is the lower opening 28 and the upper opening. Taking account of what passes through the section 27, it seems that about 50% of the total radiant heat) passes through the radiant heat transmission holes 30, 40 formed in the rectifying plates 3, 3a, 3b and the rectifying plates 4, 4a, 4b, Released into the room. Thereby, the radiant heat is used directly and effectively to raise the temperature of the room air.

  Of the radiant heat radiated from the heating element 1, the radiant heat that could not pass through the radiant heat transmission holes 30, 40 is generated on the inner surfaces of the rectifying plates 3, 3 a, 3 b and the rectifying plates 4, 4 a, 4 b. Reflected by the reflecting surfaces 31 and 41, irregular reflection occurs between the heating surface 1 and the reflecting surfaces 31 and 41 of other facing rectifying plates. As a result, part of the radiant heat passes through each of the radiant heat transmission holes 30 and 40 and is released into the room, and a part of the lower opening 28 and the upper part between the rectifying plates 3, 3a and 3b and the rectifying plates 4, 4a and 4b. It is discharged into the room from the opening 27. Furthermore, a part of the rectifying plates 3, 3a, 3b and the rectifying plates 4, 4a, 4b are heated to raise the temperature, and radiant heat from each rectifying plate is released into the room.

  Thus, according to the radiant heat exchanger R1 according to the present embodiment, while the reflection and release of the radiant heat as described above are repeated, the room is well heated by the radiant heat together with the heat moving by the convection of the air, The entire room can be effectively air-conditioned.

Table 1 shows the radiant heat during cooling and heating when the air conditioner 9 and the radiant heat exchanger R1 are operated in combination and when only the air conditioner 9 is operated without operating the radiant heat exchanger R1. Comparison data.
Radiant heat (℃) is a globe thermometer (globe thermometer, Vernon type: Item code, 080340-150: Shibata Kagaku Co., Ltd .: http://www.sibata.co.jp/product/index.php?ProcessMode=ShowProduct&ShowMode = ShowProduct & iptProductId = 610 & SIBATASESS = u4a5oag21ts1179j721ui92fk6: As of November 7, 2012), the position of the rectifying plate of the radiant heat exchanger R1 is 50cm away from the outer surface at the center in the width direction and 120cm upward from the floor surface Measured with Even when the radiant heat exchanger R1 was not operated, measurement was performed at the same position in the room as when the radiant heat exchanger R1 was operated. The measurement was performed when the room temperature was stabilized.

In the cooling operation, the radiant heat (° C.) is 27.0 (° C.) when only the air conditioner 9 is operated without operating the radiant heat exchanger R1, and when the radiant heat exchanger is operated in combination. Then, the lower temperature was 26.0 (° C.). Moreover, room temperature (degreeC) was the same 24.2 (degreeC).
When the radiation heat exchanger R1 is operated, the room temperature is the same and the radiant heat is lowered because the heat is absorbed by the influence of the radiant cold heat of the radiant heat exchanger R1 and the glove temperature is lowered. On the other hand, when only the air conditioner 9 is operated, the heat absorption action by the radiant heat exchanger R1 does not occur and the globe temperature is slightly high.

In heating operation, the radiant heat (° C) is 31.0 (° C) when only the air conditioner 9 is operated without operating the radiant heat exchanger R1, and when the radiant heat exchanger is operated in combination. Then, the higher temperature was 31.8 (° C.). The room temperature (° C.) was the same 30.6 (° C.).
When the radiant heat exchanger R1 is operated, the room temperature is the same and the radiant heat is increased because the heat is propagated to the globe thermometer due to the radiant heat of the radiant heat exchanger R1 and the glove temperature is increased. It is. On the other hand, when only the air conditioner 9 is operated, propagation of radiant heat by the radiant heat exchanger R1 does not occur, and the glove temperature is slightly lowered.

  From this result, in the cooling operation, when the air conditioner 9 and the radiant heat exchanger R1 are operated in combination, the radiant heat is lower than that in the case of using only the air conditioner 9, and the radiant heat is higher in the heating operation. It was found that the presence of the radiant heat exchanger R1 contributed to more effective air conditioning by propagating radiant heat to the human body due to the high temperature.

  When performing indoor cooling, unlike the case of performing the above-described heating, the refrigerant partially condensed in the indoor heat exchanger 97 to become a low-temperature gas-liquid two-phase is supplied from the supply / discharge pipe 13 to the heating element 1. As a result, the heating element 1 is cooled. Since the air in each of the gaps 39 and 49 is cooled by the heating element 1, the air flow along the heating element 1 and the rectifying plates 3, 3 a and 3 b and the rectifying plates 4, 4 a and 4 b is directed from the top to the bottom. The flow of the air is almost in the opposite direction to that in the case of heating. In the following description of the air flow, FIG. 8B described later is referred to for convenience.

  When heating and cooling the room as described above, the heating element 1, the decorative frames 2, 2a, the rectifying plates 3, 3a, 3b and the rectifying plates 4, 4a, 4b are expanded and contracted, and the length in the vertical direction is increased. Changes relatively. Accordingly, as shown in FIGS. 8A and 8B to be described later, the height of the drain pan 15 changes, but at the time of installation, the drain pipe 16 is inserted into the drain pipe 160 so as to freely enter and exit. Therefore, the amount of change can be absorbed.

  Thus, the radiant heat exchanger R1 includes the rectifying plates 3, 3a, 3b and the rectifying plates 4, 4a, 4b, thereby promoting the flow of air along the heating element 1 during cooling and heating. Convection can be performed efficiently. Moreover, indoor air conditioning can be effectively performed by the radiation effect | action of the hot and cold of radiant type heat exchanger R1. Furthermore, the air flow along the heating element 1 is promoted, and the fact that each vertical tube 12 is a flat tube allows heat exchange by the heating element 1 to be performed smoothly and efficiently, thereby generating heat during cooling. Freezing of the body 1 and overheating during heating are less likely to occur.

  During cooling, the gas-liquid two-phase refrigerant passes from the upper side to the lower side of each vertical pipe 12, and the air in the vicinity of the ceiling 6 where the upper temperature is higher and the temperature difference is larger is cooled first. Efficient and effective cooling can be performed. Further, the gas-liquid two-phase refrigerant is guided to each vertical pipe 12 branched from the upper header 10 and moves downward while absorbing and evaporating indoor heat. At that time, since the refrigerant is partially in the liquid phase, gravity acts on the liquid phase and can move smoothly downward.

(Operation of air conditioner A1)
Air conditioner A1 provided with radiation type heat exchanger R1 which has the above-mentioned operation and functionality operates as follows.
First, at the time of heating, the gas-phase refrigerant that has become high temperature (for example, about 60 to 80 ° C.) and high pressure in the compressor 94 due to the refrigeration cycle passes through the four-way switching valve 95 and first enters the radiant heat exchanger R1. Supplied. Thereby, the temperature of the heating element 1 reaches the temperature of the refrigerant in a relatively short time, and the radiant heat exchanger R1 emits radiant heat according to the surface temperature of the heating element 1.

  Since the radiant heat from the radiant heat exchanger R1 can directly affect the user's experience, the start-up of the air conditioner until comfort is obtained is faster than in the case where the air conditioner alone is heated. Moreover, since radiant heat is directly propagated to the floor surface 5, the wall surface 8, the ceiling surface 6, or the human body, warmth is obtained from the feet, and even if the temperature is set low by adjusting the air conditioner 9, it feels warm. It will save energy.

  And the gaseous-phase refrigerant | coolant which passed through the radiation type heat exchanger R1 is sent to the indoor unit 91 which becomes a condenser as a high-temperature and high-pressure gaseous-phase refrigerant whose temperature has decreased by about 5 to 10 ° C. due to heat radiation. Performs heat exchange with room air by the indoor side heat exchanger 97, and the refrigerant condenses and dissipates heat to perform heating.

  Further, during cooling, switching to the four-way switching valve 95 results in a refrigeration cycle opposite to that during heating. That is, the liquid-phase refrigerant that has been liquefied and generated heat by the outdoor heat exchanger 93 of the outdoor unit 90 is decompressed and expanded by the expansion valve 96, and the low-temperature gas-liquid two-phase refrigerant generated thereby is first used as the indoor unit of the air conditioner 9. 91, the indoor unit 91 is caused to act as an evaporator, and heat is taken from the indoor air to perform cooling. Then, the refrigerant in the gas-liquid two-phase state is sent from the indoor unit 91 to the radiant heat exchanger R1, and the radiant heat exchanger R1 acts as an evaporator, and the refrigerant is re-vaporized to remove heat from the room air and generate heat. Radiant cooling is performed by radiation of cold heat from the body 1.

  By re-evaporating the refrigerant by heat exchange with room air by the radiant heat exchanger R1, the temperature of the heating element 1 further decreases. Further, the refrigerant is completely vaporized, and the pressurized refrigerant is introduced into the compressor 94 and further compressed, but the pressure on the compressor is light because the pressure of the gas-phase refrigerant is high. Then, by sending the refrigerant as a high-temperature and high-pressure gas-phase refrigerant to the outdoor heat exchanger 93 that is a condenser, it is possible to efficiently condense at a lower temperature while reducing the load on the compressor as described above. The efficiency of the air conditioner 9 as a heat pump is also increased, which saves energy.

  Further, the compressor 94 reduces the burden on the compressor 94 by sucking the low-temperature and low-pressure gas-phase refrigerant whose vaporization has been promoted, which also saves energy. In short, the air conditioner A1 can effectively use the heat energy that has conventionally been wasted without being used for air conditioning as a heat pump for the air conditioner 9 by adopting the radiation heat exchanger R1. The efficiency of

  That is, since the indoor heat energy can be consumed for the phase change of the refrigerant and the temperature of the indoor air can be lowered, the gas-liquid that has been returned to the compressor 94 with the latent heat energy remaining until now. It becomes possible to use the unused energy of the two-phase refrigerant, and the efficiency increases accordingly. Furthermore, since the gas-liquid two-phase refrigerant is evaporated and re-vaporized in the radiant heat exchanger R1, it is supplied in a state where the pressure is increased as a low-temperature gas before being supplied to the compressor 94. At the same time, the operation of the compressor 94 is helped, and at the same time, the reverse flow of the liquid phase of the refrigerant can be suppressed and the life of the compressor 94 can be extended.

  Further, in the cooling operation, the so-called hybrid operation in which the air conditioner 9 is moved preferentially or preferentially can be performed, and the delay of rising of the air conditioner by the conventional radiation panel can be improved. Further, the temperature of the floor surface 5, the wall surface 8, and the ceiling surface 6 is gradually lowered by the action of the radiant heat (cold heat) thereafter, and the radiant heat from these acts synergistically and acts on the user's experience. Comfort can be obtained even when driving.

  In the operation of the air conditioner A1, (1) a method of operating the air conditioner 9 and the radiant heat exchanger R1 simultaneously, (2) a method of operating only the air conditioner 9, and (3) the air conditioner 9 according to the present invention. The radiant heat exchanger R1 can be operated, and the fan of the indoor unit 91 of the air conditioner 9 can be stopped. The operating state and operation of the air conditioner A1 in this case will be described.

In the air conditioner A1, the valves V4 and V6 are closed, the other valves V1, V2, V3, and V5 are opened, and the fan of the indoor unit 91 is stopped.
At the time of cooling, when the air conditioner 9 reaches the set temperature, in order to maintain the set temperature, the refrigeration cycle and the fan are used in combination, energy saving operation is performed to maintain the temperature, and the fan is finally stopped. The refrigeration cycle is also stopped. That is, when the fan is stopped, the evaporator does not function, so the refrigeration cycle must be stopped. On the contrary, if only the air is blown in the state where the refrigeration cycle is stopped in order to maintain the set temperature, the air becomes uncomfortable due to the influence of moisture condensed on the evaporator, which adversely affects the indoor air being cooled.

  Further, when the set temperature is reached, in order to maintain a comfortable temperature, the fan and the refrigeration cycle are repeatedly operated and stopped. Since much power consumed in the refrigeration cycle is consumed at the time of start-up during operation, such repeated operation consumes useless energy.

  On the other hand, the non-powered radiant heat exchanger R1 operates as an evaporator even when the room air reaches a set temperature, stops the fan, and does not blow, so that the refrigeration cycle for energy saving operation can be maintained. it can. Thereby, air harmony machine A1 can perform energy saving operation which maintains comfort, without repeating a stop and operation.

Further, by stopping the fan, there is no motor noise or wind noise, quietness can be obtained, and an uncomfortable draft feeling or excessive cooling due to the air blow (cold air) of the air conditioner 9 can be prevented.
Furthermore, heat transfer due to radiant heat from the radiant heat exchanger R1 lowers the temperature of the floor wall ceiling, human body, fixtures, etc., and there is less temperature unevenness at the top and bottom of the room, and comfort is improved.

  Since radiant heat directly affects the sensation, coolness can be obtained even at the same room temperature. Moreover, since the air blow of the air conditioner 9 can be stopped as described above, the power consumption of the fan becomes unnecessary and energy is saved. Furthermore, the indoor air can be dehumidified by the cooling action of the heating element, and comfort can be obtained by reducing the humidity.

  During heating, when the air conditioner 9 reaches the set temperature, in order to maintain the set temperature, the refrigeration cycle and the fan are used in combination, energy saving operation is performed to maintain the temperature, and finally the fan is stopped and further frozen. The cycle also stops. That is, when the fan is stopped, the condenser does not function, so the refrigeration cycle must be stopped.

  On the contrary, if only air is blown in a state where the refrigeration cycle is stopped in order to maintain the set temperature, a draft having an unpleasant cold wind feeling is produced, which adversely affects the heated indoor air. In order to maintain a comfortable temperature, the fan and the refrigeration cycle are finally stopped from the energy-saving operation, and the operation is repeated after waiting for the room temperature to decrease. Since much power consumed in the refrigeration cycle is consumed at the time of start-up during operation, such repeated operation consumes useless energy.

  On the other hand, the non-powered radiant heat exchanger R1 operates as a condenser even when the room air reaches the set temperature, the fan is stopped and no air is blown, so that the refrigeration cycle for energy saving operation can be maintained. it can. Thereby, air harmony machine A1 can perform energy saving operation which maintains comfort, without repeating a stop and operation.

In addition, by stopping the fan, there is no motor noise or wind noise, quietness is obtained, an uncomfortable draft feeling due to the air blow (hot air) of the air conditioner 9 can be prevented, and the hot air of the air conditioner 9 is not emitted, so Drying can be suppressed.
Furthermore, the heat transfer by the radiant heat from the radiant heat exchanger R1 raises the temperature of the floor wall ceiling, the human body, and the equipment, and there is little temperature unevenness in the upper and lower sides of the room, and the comfort is improved.

  Since radiant heat directly affects the sensation, warmth can be obtained even at the same room temperature. Moreover, since the air blow of the air conditioner 9 can be stopped as described above, the power consumption of the fan becomes unnecessary and energy is saved.

  In the operation of the air conditioner A1, cooling and heating by only the air conditioner 9 and cooling and heating by the air conditioner 9 and the radiant heat exchanger A1 were performed, and PMV was evaluated. PMV (Predicted Mean Vote) is an expected average thermal sensation declaration, a theory published by Professor Fanger of the Danish Institute of Technology, and an index of thermal sensation felt by humans. By calculating the PMV value, the comfort level for a combination of six elements (air temperature, average radiation temperature, wind speed, relative humidity, clothing amount, metabolic rate) related to the temperature environment can be obtained.

The calculation formula of PMV is as follows.

PMV = (0.303e-0.036M + 0.028) × M-W-Ed-Es-Ere-Cre-RC)

M: Metabolism (W / m ² ) Ere: Latent heat loss due to breathing (W / m ² )
W: Mechanical work (W / m ² ) Cre: Sensible heat loss due to breathing (W / m ² )
Ed: Insensitive steaming (w / m ² ) R: Radiant heat loss (W / m ² )
Es: Evaporative heat loss from the skin surface (w / m ² )
C: Convective heat loss (W / m ² )

Summer 0.6 (short sleeves) and 1.1 (chair seat),
Assumes winter seasons 1.0 (backs) and 1.1 (chairs).
(conditions)
Air conditioner cooling (room temperature 24.2 ℃: globe temperature 27 ℃: wind speed 0.10m / s: humidity 52.8%)
Air conditioner + radiant cooling (room temperature 24.2 ° C: globe temperature 26 ° C: wind speed 0.10m / s: humidity 51.6%)
Air conditioner heating (room temperature 30.6 ° C: globe temperature 31 ° C: wind speed 0.10m / s: humidity 40.0%)
Air conditioner + radiant heating (room temperature 30.6 ° C: globe temperature 31.8 ° C: wind speed 0.10m / s: humidity 41.9%)

The PMV evaluation is expressed as a numerical value from −3 to +3, with the PMV value ± 0 being in a neutral state. When the numerical value is larger, the evaluation is warmer or hotter. When the numerical value is smaller, is it cooler? It becomes evaluation that feels cold.
As an index, -3: cold, -2: cool, -1: slightly cool, ± 0: neither, 1: slightly warm, 2: warm, 3: hot.

(Results during cooling)
Cooling by air conditioner only ... PMV = 0.25
Cooling by air conditioner and radiant heat exchanger PMV = 0.09
As described above, when the air conditioner 9 and the radiant heat exchanger R1 are operated in conjunction with each other, the numerical value is lower than that of the air conditioner single operation, and the cooler feeling is felt.
This is also considered to be due to a decrease in humidity due to cooling radiation (endothermic action) and dehumidifying action of the radiation heat exchanger R1 during cooling. That is, the moisture condensed on the surface by heat exchange with the heat generating element 1 by the cooling and radiating action of the radiant heat exchanger R1 and the flow of air is collected in the drain pan 15, and the moisture is discharged outdoors. It seems that the comfort of the two improves together.

(Results when heating)
Heating by air conditioner only ... PMV = 1.99
Heating by air conditioner and radiant heat exchanger ... PMV = 2.10
Thus, the result of operating the radiant heat exchanger in conjunction with the air conditioner was higher than the single operation of the air conditioner, and felt warmer.

  Further, during cooling, the indoor unit 91 of the air conditioner 9 is used as an evaporator, and the refrigerant that has been heated by the heat of the indoor air to become a partial liquid phase (gas-liquid two phase) is, for example, about 7 ° C to 15 ° C. Yes, since this refrigerant is passed through the heating element 1 of the radiant heat exchanger R1, the heating element 1 will not freeze. Furthermore, since the refrigerant is accelerated and heated sufficiently by being heated by the heating element 1 of the radiant heat exchanger R1, the load on the compressor 94 is reduced, and the life of the compressor 94 is reduced. It can contribute to extension and save energy.

  In the air conditioner A1, the temperature unevenness of the floor surface 5, the wall surface 8, and the ceiling surface 6 is reduced by the amount that the function of the windless and silent radiant cooling and heating by the radiant heat exchanger R1 is exhibited, and the air volume of the indoor unit 91 is reduced. Since comfort is sufficiently obtained even if the air pressure is lowered, an unpleasant draft due to a large air volume from the indoor unit 91 can be suppressed. Thereby, the operation of the fan of the indoor unit 91 can be suppressed, the life of the fan motor can be extended, and the life of the indoor unit 91 can be extended.

Please refer to FIG.
An air conditioner A2 that is a second embodiment of the air conditioner according to the present invention includes a multi-air conditioner 9a that is frequently used in stores and the like, and two radiant heat exchangers R1. The multi air conditioner 9a has an outdoor unit 90a and two indoor units 91a and 91b installed in each room connected in parallel to the outdoor unit 90a. Moreover, each radiation type heat exchanger R1, R1 is installed between the floor 5 and the ceiling 6 like the radiation type heat exchanger R1 of the air conditioner A1.

In the present embodiment, one radiant heat exchanger is installed per indoor unit, but a plurality of radiant heat exchangers may be installed in series or in parallel per indoor unit.
The air conditioner A2 is different from the air conditioner A1 in that it has two indoor units 91a and 91b and two radiant heat exchangers R1 and R1, respectively. Since the structure having 91b, radiant heat exchangers R1 and R1, the pipes 92a and 92b connecting them, and the valves V1 to V6 is the same as the air conditioner A1, description of the structure is omitted.

In the present embodiment, one radiant heat exchanger is installed per indoor unit, but a plurality of radiant heat exchangers may be installed in series or in parallel per indoor unit.
The air conditioner A2 is different from the air conditioner A1 in that it includes two indoor units 91a and 91b and two radiant heat exchangers R1 and R1, but the indoor unit 91a and the radiation in each room are different. Since the operation method and operation of the outdoor heat exchanger R1 and the indoor unit 91b and the radiant heat exchanger R1 are substantially the same as the indoor unit 91 and the radiant heat exchanger R1 of the air conditioner A1, the operation method and operation thereof. Description of is omitted.

Please refer to FIG.
The radiant heat exchanger R1 can be replaced by a radiant heat exchanger R2 shown in FIG.
The radiant heat exchanger R2 has substantially the same structure except that the heating elements 1a and 1b whose pipings are in series are different from the heating element 1 in which the piping of the radiant heat exchanger R1 is parallel. Have. 7 (a) and 7 (b), the same parts as those of the radiation heat exchanger R1 are denoted by the same reference numerals, and the description of the structure of those parts is omitted.

The heating elements 1a and 1b are provided on the front side and the back side of the radiant heat exchanger R2 with a slight gap and have the same structure.
A suspension beam member 19 is installed on the upper ends of the decorative frames 2 and 2a. The heating elements 1a and 1b are formed of the same flat tube as the vertical tube 12, and are serpentine tubes having a number of U-shaped folds at the same height at the upper and lower ends.
Note that the pipes of the vertical pipe 12 and the heating elements 1a and 1b have a pipe body 12a (see FIG. 5 (c)) having a plurality of strips 121 parallel to the longitudinal direction on the inner surface, or a tube in which strips are not formed. It can also be formed with a body.

  The heating elements 1a and 1b are hung on the suspension beam member 19 via a large number of hanging tools 190, with the upper side folded back. Both end sides of the serpentine pipes of the heating elements 1a and 1b penetrate the suspension beam member 19, respectively, and supply / exhaust pipes 13a and 14a are connected to the respective front ends. The supply / discharge pipes 13 a and 14 a are connected in series in the path of the pipe 92.

  Since the heating elements 1a and 1b have a serpentine shape as described above, the high-temperature and high-pressure gas-phase refrigerant is introduced from the bottom of the piping during heating, unlike the parallel heating type heating element 1, and the gas-liquid is cooled during cooling. Although there is no advantage of putting the two-phase refrigerant from above the pipe, the refrigerant can be put from above or below the pipe, so the degree of freedom of the pipe is high.

  In the process of repeatedly moving the refrigerant up and down in the pipe, the gravity action due to the lower of the two-phase state and the upward movement without the gravity of the gas phase state are repeatedly performed, so that the heat exchange as an evaporator is smooth. To be done. The shape of the serpentine tube is not limited to the vertical direction, and a serpentine tube in the horizontal direction is also possible. In this case, it has the same advantage as the case where the gas-liquid two-phase refrigerant at the time of cooling is put from above the pipe.

Please refer to FIG.
The radiant heat exchanger R1 can be replaced by a radiant heat exchanger R3 shown in FIG.
The radiant heat exchanger R <b> 3 includes a lower ventilation guide member 17 that guides flowing air at the lower part of the heating element 1, and an upper ventilation guide member 18 at the upper part of the heating element 1. The lower ventilation guide member 17 is composed of two curved plates (reference numerals omitted) having the same width as the length of the lower header tube 11 of the heating element 1 and having a required length in the vertical direction. Each curved plate is a drain pan 15. Are fixed to the decorative frames 2 and 2a so as to face the front side and the back side.

  Further, the upper ventilation guide member 18 is composed of two curved plates (reference numerals omitted) having a required length in the vertical direction and approximately the same width as the length of the upper header tube 10 of the heating element 1. The upper header pipe 10 is fixed to the decorative frames 2 and 2a so as to face the front side and the back side. In addition, although the raw material of the lower ventilation guide member 17 and the upper ventilation guide member 18 is various metals or a synthetic resin, it is not limited to these.

The radiant heat exchanger R3 includes the lower ventilation guide member 17 and the upper ventilation guide member 18 so that air flows smoothly in the gaps 39 and 49. In this embodiment, the radiation heat exchanger R3 has a two-sheet structure. The flow of air by the chimney effect using the current plates 3, 3a and the current plates 4, 4a can be performed more efficiently.
The lower ventilation guide member 17 and the upper ventilation guide member 18 are provided with a coating having a deodorizing function, an antibacterial function, an adsorption / decomposition function of a volatile organic compound, or the like on the surface, thereby purifying indoor air. You can also.

Please refer to FIG.
The radiant heat exchangers R1, R2, and R3 can also display advertisements on the surfaces of the rectifying plates 3 and 3a on the front side as shown in FIGS. 9 (a) and 9 (b).
(Not published for violations of public order and morals)
In addition, advertising characters can be printed on the back side rectifying plates 4 and 4a in the same manner. What is expressed on each rectifying plate is not limited to advertisements, signs (signs and signboard displays), and various designs, but various artistic expressions such as pictures and photographs can also be employed.

  This makes it possible to use the current plates 3, 3a, 3b and the current plates 4, 4a, 4b, which have the functionality as a protective cover, in addition to the function of generating a chimney effect that promotes air convection as an advertising panel or sign Can do. That is, the radiant heat exchangers R1, R2, and R3 have a form that is largely exposed to the indoor space where they are installed, and there is a sense of presence. By using this exposed form, more effective advertising functions Can be given.

  The terms and expressions used in this specification are merely explanatory and are not limiting at all, and exclude terms and expressions equivalent to the features described in this specification and parts thereof. There is no intention to do. Further, it goes without saying that various modifications are possible within the scope of the technical idea of the present invention.

A1 air conditioner 9 air conditioner 90 outdoor unit 91 indoor unit 92 piping 92a, 92b piping 93 outdoor heat exchanger 94 compressor 95 four-way switching valve 96 expansion valve 97 indoor side heat exchanger 98 piping V1, V2, V3, V4, V5, V6 valve R1 radiant heat exchanger 1 heating element 10 upper header pipe 11 lower header pipe 12 vertical pipe 120 flow path 13 supply / exhaust pipe 14 supply / exhaust pipe 15 drain pan 16 drain pipe 160 drain pipe 12a piping 121 strip 2, 2a Decorative frame 20, 21 Lower fixing member 22, 23 Upper fixing member 24, 25 Attachment 26 Reinforcing member 27 Upper opening 28 Lower opening 3, 3a, 3b Rectifying plate 30 Radiation heat transmitting hole 31 Reflecting surface 39 Gap 4 4a, 4b Rectifying plate 40 Radiant heat transmission hole 41 Reflecting surface 49 Air gap 5 Floor surface 50 Lower clearance 6 Ceiling surface 6 0 Upper gap 7a, 7b Advertising character 8 Wall surface R2 Radiation heat exchanger 1a, 1b Heating element 19 Suspension beam member 190 Suspension tool R3 Radiation heat exchanger 17 Lower airflow guide member 18 Upper airflow guide member A2 Air conditioner 9a Multi Air conditioner 90a Outdoor unit 91a, 91b Indoor unit

Means taken by the present invention to solve the above problems are as follows.
(1) The present invention
A compressor, an indoor heat exchanger, and an outdoor heat exchanger are connected by piping, and include a refrigerant circuit that circulates a refrigerant to perform a refrigeration cycle, and air that is heat-exchanged with the refrigerant in the indoor heat exchanger Air conditioner supplied indoors by fans,
A radiant heat exchanger incorporated in the refrigerant circuit;
With
The radiant heat exchanger is a heating element disposed from the floor side to the ceiling side in the room,
A rectifying plate that rectifies the air flowing in the vertical direction along the heating element, and is arranged with a gap through which air flows between the heating element and the heating element;
With
The refrigerant circuit has an expansion valve and a four-way switching valve,
Having a first valve in a first pipe connecting the indoor heat exchanger and the expansion valve;
A second pipe connecting the four-way switching valve and the indoor heat exchanger has a second valve;
The second pipe is connected to a third pipe connected to one end of the heating element pipe, and the third pipe has a third valve,
In addition to the pipe of the heating element, the second valve of the second pipe is closer to the outdoor heat exchanger and the first valve of the first pipe is closer to the outdoor heat exchanger. A fourth pipe connected to the end side is connected, and has a fourth valve between the second pipe and the first pipe of the fourth pipe, and the first pipe of the fourth pipe A fifth valve is provided between the pipe and the heating element;
In the second pipe, a sixth valve is provided between the fourth pipe and the third pipe .
It is an air conditioner.

(2) The present invention
A compressor, an indoor heat exchanger, and an outdoor heat exchanger are connected by piping, and include a refrigerant circuit that circulates a refrigerant to perform a refrigeration cycle, and air that is heat-exchanged with the refrigerant in the indoor heat exchanger Air conditioner supplied indoors by fans,
A radiant heat exchanger incorporated in the refrigerant circuit;
With
The radiant heat exchanger is a heating element disposed from the floor side to the ceiling side in the room,
A rectifying plate that rectifies the air flowing in the vertical direction along the heating element, and is arranged with a gap through which air flows between the heating element and the heating element ;
With
The piping of the heating element is a parallel type or a series type in which the refrigerant flow direction is a vertical direction, and the gas-liquid two-phase refrigerant passes from the upper side to the lower side of the pipe during cooling, and the gas-phase refrigerant is connected to the pipe during heating. It is connected to the piping connecting the outdoor heat exchanger and the indoor heat exchanger so that it passes from the bottom to the top.
It is an air conditioner.

(3) The present invention
It is preferable and recommended that the current plate surrounds the heating element or is disposed on both sides of the heating element .

(4) The present invention
The refrigerant circuit has an expansion valve and a four-way switching valve,
The radiant heat exchanger, said chamber inner heat exchanger and the four-way switching valve tuna instrument piping, piping of the heating element are connected in series, is preferably, is recommended.

(Delete)

( 7 ) The present invention
The air conditioner is a multi air conditioner having a plurality of indoor heat exchangers in which pipes are connected in parallel to one outdoor heat exchanger, and the radiation heat exchanger is replaced with the plurality of indoor heat exchangers. It is also possible to adopt a configuration in which one or more are installed corresponding to each of the above.

( 8 ) The present invention
It is preferable and recommended that a ventilation guide member for guiding the air flowing inside the current plate to flow smoothly is disposed on the upper side and / or the lower side of the heating element.

( 9 ) The present invention
On the surface of the heating element, one or more selected in a coating having a function of excellent heat dissipation such as knurling, anodizing, or a coating for heat dissipation, a deodorizing function, an antibacterial function, or an adsorption decomposition function of a volatile organic compound It is preferred and recommended to apply multiple processes or coatings.

(Delete)

(Delete)

Claims (12)

A compressor, an indoor heat exchanger, and an outdoor heat exchanger are connected by piping, and include a refrigerant circuit that circulates a refrigerant to perform a refrigeration cycle, and air that is heat-exchanged with the refrigerant in the indoor heat exchanger Air conditioner supplied indoors by fans,
A radiant heat exchanger incorporated in the refrigerant circuit;
With
The radiant heat exchanger is a heating element disposed from the floor side to the ceiling side in the room,
A rectifying plate that rectifies the air flowing in the vertical direction along the heating element, and is arranged with a gap through which air flows between the heating element and the heating element;
With
Air conditioner. The current plate surrounds the heating element or is arranged on both sides with the heating element in between.
The air conditioner according to claim 1. The refrigerant circuit has an expansion valve and a four-way switching valve,
The radiant heat exchanger has a pipe connecting the heating element connected in series to a pipe connecting the four-way switching valve and the indoor heat exchanger.
The air conditioner according to claim 1 or 2. The refrigerant circuit has an expansion valve and a four-way switching valve,
Having a first valve in a first pipe connecting the indoor heat exchanger and the expansion valve;
A second pipe connecting the four-way switching valve and the indoor heat exchanger has a second valve;
The second pipe is connected to a third pipe connected to one end of the heating element pipe, and the third pipe has a third valve,
In addition to the pipe of the heating element, the second valve of the second pipe is closer to the outdoor heat exchanger and the first valve of the first pipe is closer to the outdoor heat exchanger. A fourth pipe connected to the end side is connected, and has a fourth valve between the second pipe and the first pipe of the fourth pipe, and the first pipe of the fourth pipe The pipe 98 has a fifth valve between the heating elements,
In the second pipe, a sixth valve is provided between the fourth pipe and the third pipe.
The air conditioner according to claim 1 or 2. The current plate is
It has a plurality of radiant heat transmission holes that penetrate the inner and outer surfaces, and the inner surface is a reflective surface that reflects the radiant heat radiated from the heating element,
When the radiant heat exchanger is installed indoors, the lower end of the rectifying plate is above the floor surface, the upper end is below the ceiling surface, and between the rectifying plate and the floor surface and between the rectifying plate and the ceiling surface. A gap for circulating air is formed between
The air conditioner according to claim 1, 2, 3, or 4. The piping of the heating element is a flat tube having a plurality of flow paths parallel to the longitudinal direction inside or a tube having a plurality of strips parallel to the longitudinal direction on the inner surface.
The air conditioner according to claim 1, 2, 3, 4 or 5. The piping of the heating element is a parallel type or a series type in which the refrigerant flow direction is a vertical direction, and the gas-liquid two-phase refrigerant passes from the upper side to the lower side of the pipe during cooling, and the gas-phase refrigerant is connected to the pipe during heating. It is connected to the piping connecting the outdoor heat exchanger and the indoor heat exchanger so that it passes from the bottom to the top.
The air conditioner according to claim 1, 2, 3, 4, 5 or 6. The air conditioner is a multi air conditioner having a plurality of indoor heat exchangers in which pipes are connected in parallel to one outdoor heat exchanger, and the radiation heat exchanger is replaced with the plurality of indoor heat exchangers. One or more were installed corresponding to each of the
The air conditioner according to claim 1, 2, 3, 4, 5, 6 or 7. A ventilation guide member is provided on the upper side and / or lower side of the heating element to guide the air flowing inside the current plate smoothly.
The air conditioner according to claim 1, 2, 3, 4, 5, 6, 7, or 8. On the surface of the heating element, one or more selected in a coating having a function of excellent heat dissipation such as knurling, anodizing, or a coating for heat dissipation, a deodorizing function, an antibacterial function, or an adsorption decomposition function of a volatile organic compound Has multiple processing or coatings,
The air conditioner according to claim 1, 2, 3, 4, 5, 6, 7, 8 or 9. A compressor, an indoor heat exchanger, and an outdoor heat exchanger are connected by piping, and include a refrigerant circuit that circulates a refrigerant to perform a refrigeration cycle, and air that is heat-exchanged with the refrigerant in the indoor heat exchanger An air conditioner supplied indoors by a fan, and a radiant heat exchanger incorporated in the refrigerant circuit,
The radiant heat exchanger is a heating element disposed from the floor side to the ceiling side in the room,
In the operation of the air conditioner, which is provided with a gap through which air flows between the heating element and a rectifying plate that rectifies the air flowing in the vertical direction along the heating element,
Operating the radiant heat exchanger and the indoor heat exchanger simultaneously or selectively;
How to operate the air conditioner. A compressor, an indoor heat exchanger, and an outdoor heat exchanger are connected by piping, and include a refrigerant circuit that circulates a refrigerant to perform a refrigeration cycle, and air that is heat-exchanged with the refrigerant in the indoor heat exchanger An air conditioner supplied indoors by a fan, and a radiant heat exchanger incorporated in the refrigerant circuit,
The radiant heat exchanger is a heating element disposed from the floor side to the ceiling side in the room,
In the operation of the air conditioner, which is provided with a gap through which air flows between the heating element and a rectifying plate that rectifies the air flowing in the vertical direction along the heating element,
Operate the radiant heat exchanger and stop the fan of the indoor heat exchanger in a state in which the circulation of the refrigerant to the indoor heat exchanger is maintained.
How to operate the air conditioner.

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