Air conditioning system and operation method for air conditioning system

Abstract

An air conditioning system, combining an air conditioner and a radiant heat exchanger, is provided with which convection of indoor air is promoted by the radiant heat exchanger to suppress air blowing by a fan of the air conditioner and thereby reduce a draft sensation. An air conditioning system A 1 includes an air conditioner, having an outdoor machine and an indoor machine incorporated in a refrigeration cycle, and a radiant heat exchanger, having a heating element, including and arranged from piping through which a refrigerant passes, and having the respective piping making up the heating element connected to a piping connecting the outdoor machine and the indoor machine and passing the refrigerant, the radiant heat exchanger has rectifier plates that are vertically disposed with gaps, through which air passes, provided with respect to the heating element at the front surface side and rear surface side of the heating element, and each rectifier plate has a plurality of radiant heat passing pores.

1 . An air conditioning system comprising:
 an air conditioner having a refrigerant circuit, in which a compressor, an expansion valve, a flow path switching valve, an indoor side heat exchanger, and an outdoor side heat exchanger are connected by piping to circulate a refrigerant to perform a refrigeration cycle, and supplying air, which has undergone heat exchange with the refrigerant at the indoor side heat exchanger, to an indoor space by a fan;   a radiant heat exchanger having a heating element incorporated in the refrigerant circuit of the air conditioner;   rectifying plates sandwiching the heating element of the radiant heat exchanger in between and each covering a surface of the heating element across a gap provided with respect to the surface, having the inner surface arranged as a reflecting surface that reflects the radiant heat radiated from the heating element, having a radiant heat passing portion penetrating through the inner and outer surfaces and allowing passage of radiant heat and air, and promoting air convection by a chimney effect, and   an operation mode switching means by which switching to a single operation mode among the respective operation modes of a first operation mode of putting the air conditioner and the radiant heat exchanger in operation, a second operation mode of putting only the air conditioner in operation, and a third operation mode of putting only the radiant heat exchanger in operation is performed automatically or manually; and   wherein the operation mode switching means is one selected from the group consisting of:   the operation mode switching means that includes a first piping connecting the expansion valve and the indoor side heat exchanger, a first valve that the first piping has in its course, a second piping connecting the flow path switching valve and the indoor side heat exchanger, a second valve that the second piping has in its course, a third piping having one end side connected to the second piping and the other end side connected to one end side of the piping of the heating element of the radiant heat exchanger, a third valve that the third piping has in its course, a fourth piping having one end side connected to the other end side of the piping of the heating element of the radiant heat exchanger and the other end side connected to the second piping at a position closer to the flow path switching valve than the second valve, a fourth valve that the fourth piping has in its course, a fifth piping having one end side connected to the second piping at a position closer to the flow path switching valve than the second valve and the other end side connected to the first piping at a position closer to the expansion valve than the first valve, a fifth valve that the fifth piping has in its course, and a sixth valve that the second piping has in a course between the connection portions to the fourth piping and the third piping,   the operation mode switching means that includes a first piping connecting the expansion valve and the indoor side heat exchanger, a second piping connecting the flow path switching valve and the indoor side heat exchanger, a third piping having one end side connected to the second piping and the other end side connected to one end side of the piping of the heating element of the radiant heat exchanger, a fourth piping having one end side connected to the other end side of the piping of the heating element of the radiant heat exchanger and the other end side connected to the second piping at a position closer to the indoor side heat exchanger than the connection portion to the third piping, a fifth piping having one end side connected to the second piping at a position near the connection portion to the fourth piping and the other end side connected to the first piping, a valve that the fifth piping has in its course, and a valve that the second piping has in its course between the connection portions to the fourth piping and the third piping, with one of either of the first piping and the second piping having a valve in its course and one of either of the third piping and the fourth piping having a valve in its course,   the operation mode switching means that includes a first piping connecting the expansion valve and the indoor side heat exchanger, a second piping connecting the flow path switching valve and the indoor side heat exchanger, a third piping having one end side connected to the second piping and the other end side connected to one end side of the piping of the heating element of the radiant heat exchanger, a fourth piping having one end side connected to the other end side of the piping of the heating element of the radiant heat exchanger and the other end side connected to the second piping at a position closer to the indoor side heat exchanger than the connection portion to the third piping, a fifth piping having one end side connected to the second piping at a position near the connection portion to the fourth piping and the other end side connected to the first piping, a valve that the fifth piping has in its course, and a valve that the second piping has in its course between the connection portions to the fourth piping and the third piping, with one of either of the first piping and the second piping having a valve in its course and one of either of the third piping and the fourth piping having a valve in its course,   the operation mode switching means that includes a first piping connecting the expansion valve and the indoor side heat exchanger, a second piping connecting the flow path switching valve and the indoor side heat exchanger, a third piping having one end side connected branchingly to the second piping and the other end side connected to one end side of the piping of the heating element of the radiant heat exchanger, a fourth piping having one end side connected to the other end side of the piping of the heating element of the radiant heat exchanger and the other end side connected branchingly to the second piping, and a valve that the second piping has in its course between the connection portion to the third piping and the connection portion to the fourth piping, with the length of the course that is the sum of the third piping, the piping of the heating element, and the fourth piping being formed to be longer than the length of the course between the connection portion to the third piping and the connection portion to the fourth piping, and   the operation mode switching means that includes a first piping connecting the expansion valve and the indoor side heat exchanger, a second piping connecting the flow path switching valve and the indoor side heat exchanger, a third piping having one end side connected to the second piping and the other end side connected to one end side of the piping of the heating element of the radiant heat exchanger, a fourth piping having one end side connected to the other end side of the piping of the heating element of the radiant heat exchanger and the other end side connected to the second piping, and a valve that the second piping has in its course between the connection portion to the third piping and the connection portion to the fourth piping, with either or both of the third piping and the fourth piping having a valve in the course or courses thereof.   
     
     
         2 .- 8 . (canceled) 
     
     
         9 . The air conditioning system according to  claim 1 , wherein
 the heating element has a plurality of piping, the piping is connected in parallel to the piping making up the refrigerant circuit, the direction of flow of the refrigerant is the up/down direction, a gas-liquid two-phase refrigerant passes through from the upper sides to the lower sides of the piping of the heating element during cooling, and a gas phase refrigerant passes through from the lower sides to the upper sides of the piping of the heating element during heating.   
     
     
         10 . The air conditioning system according to  claim 1 , wherein
 the piping of the heating element has a corrugated pipe arrangement, which is connected in series to the piping making up the refrigerant circuit and with which the direction of flow of the refrigerant is the up/down direction.   
     
     
         11 . The air conditioning system according to  claim 1 , wherein
 the piping of the heating element has a corrugated pipe arrangement, which is connected in series to the piping making up the refrigerant circuit and with which the direction of flow of the refrigerant is the horizontal direction, a gas-liquid two-phase refrigerant passes from the upper side to the lower side of the piping of the heating element during cooling, and a gas phase refrigerant passes from the lower side to the upper side of the piping during heating.   
     
     
         12 . The air conditioning system according to  claim 1 , wherein
 end members connecting the respective rectifying plates are disposed at end portions at both sides of the respective rectifying plates to form a tubular body that is open at an upper portion and a lower portion, and the heating element is enclosed in the tubular body.   
     
     
         13 . The air conditioning system according to  claim 1 , wherein
 the air conditioner is a multi air conditioner having a plurality of indoor side heat exchangers, with piping connected in parallel, with respect to the single outdoor side heat exchanger and one or a plurality of the radiant heat exchangers is or are installed in respective correspondence to the plurality of indoor side heat exchangers.   
     
     
         14 . The air conditioning system according to  claim 1 , wherein
 the air conditioner is an inverter air conditioner that performs inverter control of the compressor.   
     
     
         15 . The air conditioning system according to  claim 1 , wherein
 the piping of the heating element is a flat pipe having a plurality of flow paths running in parallel in the longitudinal direction in the interior or a pipe having a plurality of stria portions running in parallel in the longitudinal direction on the inner surface.   
     
     
         16 . The air conditioning system according to  claim 1 , wherein
 a ventilation guiding member, which guides the air that enters and exits the gaps at the inner sides of the rectifying plates so that the air flows smoothly, is disposed at the upper side or the lower side or the upper side and the lower side of the heating element.   
     
     
         17 . The air conditioning system according to  claim 1 , wherein
 one or a plurality of types of processing or coating, selected from among knurling, alumite processing, heat dissipation coating, far infrared ray emission coating, and coating having a deodorizing function, an antibacterial function, or a volatile organic compound adsorption-decomposition function, is applied to the surface of the heating element.   
     
     
         18 . The air conditioning system according to  claim 1 , wherein
 an advertisement or an art image is displayed on the surface of the rectifying plate.   
     
     
         19 .- 20 . (canceled)