JP3014110U - Air conditioner - Google Patents

Abstract

(57) [Summary] [Purpose] To provide an air conditioner capable of effectively air-conditioning a space requiring air conditioning in an open space or a wide space by using an indoor air conditioner. [Structure] This device operates an arbitrary number of indoor air conditioners 2 by a general-purpose heat pump 1, and includes an auxiliary heat exchanger 3 arranged on the suction side of the air conditioner 2 and the auxiliary heat exchanger 3 And an auxiliary heat source 4 for supplying a heat exchange fluid.
By supplying the heat exchange fluid from the auxiliary heat source 4 to the auxiliary heat exchanger 3, it becomes possible to keep the suction temperature of the air conditioner 2 within the design temperature range of a general-purpose air conditioner.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an air conditioner, and more particularly to an air conditioner for effectively air-conditioning a space requiring air conditioning in an open space or a large space such as a golf driving range or an automobile repair shop.

[0002]

[Prior art]

 In recent years, far infrared heaters and stoves have been installed near the bats at golf driving ranges, and indoor air conditioners that are operated by general-purpose heat pumps have been installed to allow comfortable golf practice outdoors even in the middle of winter. Are arranged.

[0003]

[Problems to be solved by the device]

 However, in the conventional case where the indoor air conditioner is used outdoors, it has not been designed and equipped with sufficient understanding of the characteristics of the indoor air conditioner. In other words, since the intake temperature of the air conditioner is not sufficiently adapted to the outside air temperature, which is a severer condition than the indoor temperature, it cannot perform its function as an air conditioner sufficiently and is comfortable and stable. There is a problem that the environment cannot be obtained. Moreover, not only is the capacity insufficient due to insufficient capacity of the heat exchanger of the air conditioner, but also the refrigeration cycle of the heat pump is overloaded, resulting in unfavorable operation, which also causes a failure of the heat pump. was there.

On the other hand, designing an outdoor air conditioner has a problem in that the air conditioner itself becomes large in size, resulting in high cost.

Therefore, the present invention has been made in view of the above circumstances, and effectively uses an indoor air conditioner to effectively create a space requiring air conditioning in an open space or a wide space. An object is to provide an air conditioner capable of air conditioning.

[0006]

[Means for Solving the Problems]

 The air conditioner according to claim 1, wherein a general-purpose heat pump operates an air conditioner designed for indoor use, the number of which can be set within the capacity range of the heat pump. An auxiliary device arranged on the suction side of the air conditioner. It is characterized by having a heat exchanger and an auxiliary heat source for supplying a heat exchange fluid to the auxiliary heat exchanger.

According to a second aspect of the present invention, in the air conditioning system according to the first aspect, the air temperature after the heat exchange by the auxiliary heat exchanger, the air temperature on the suction side of the air conditioner is It has a temperature sensor for detecting and a control means for controlling the heat quantity of the heat exchange fluid supplied from the auxiliary heat source to the auxiliary heat exchanger so that the temperature detected by the temperature sensor becomes a set temperature. It is a feature.

[0008]

[Action]

 According to the air conditioner of claim 1, by supplying the heat exchange fluid from the auxiliary heat source to the auxiliary heat exchanger, the suction temperature of the air conditioner is designed for a general-purpose air conditioner (air conditioner designed for indoor use). It is possible to keep it within the temperature range. As a result, even if the outside air temperature where the air conditioner is installed deviates from the normal temperature range (the temperature range that is the suction condition when a general-purpose air conditioner is designed and manufactured), it is impossible to operate the heat pump and the air conditioner. It is possible to effectively air-condition spaces that require air conditioning in open spaces and large spaces without rolling.

According to the air conditioner of the second aspect, the control means controls the heat quantity to the auxiliary heat exchanger so that the intake temperature of the air conditioner is automatically within the design temperature range of the general-purpose air conditioner. It becomes possible to keep.

[0010]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a schematic configuration diagram showing an embodiment of an air conditioner of the present invention.

As shown in FIG. 1, the air conditioner of the present embodiment has a number of indoor units that can be installed within the capacity range of the heat pump 1 operated by a general-purpose heat pump (also called an outdoor unit) 1. Air conditioner (also called indoor unit) 2 designed as, an auxiliary heat exchanger 3 arranged on the suction side of each air conditioner 2, and an auxiliary for supplying heat exchange fluid to each auxiliary heat exchanger 3. The temperature of the air after being heat-exchanged by the heat source 4 and one of the plurality of auxiliary heat exchangers 3 that is a representative of the plurality of air conditioners 2, and the temperature at which the air temperature on the suction side of the air conditioner 2 is detected. Sensor 5, temperature setter (TC) 6 for this temperature sensor 5, and each auxiliary heat exchange from the auxiliary heat source 4 so that the air temperature detected by the temperature sensor 5 becomes the temperature set by the temperature setter 6. Controls the amount of heat of the heat exchange fluid supplied to vessel 3. And a control means 7 that operates. The air conditioner 2 and the auxiliary heat exchanger 3 may be one each. In the figure, TG is a thermometer and PG is a pressure gauge.

The heat pump 1 is provided internally with an outdoor heat exchange coil, a compressor, an expansion valve, a switching valve, etc., which are not shown, and a refrigerant pipe (liquid) is provided between the heat pump 1 and the heat exchanger 20 of each air conditioner 2. The refrigerant (for example, fluorocarbon refrigerant R22) is circulated through the pipe 10A and the refrigerant pipe (gas pipe) 10B. The heat pump 1 may be either a gas heat pump or an electric heat pump.

The air conditioner 2 includes a heat exchanger (also referred to as an indoor coil) 20, a blower 22 that blows air from the suction side of the air conditioner 2 toward the outlet side, and one or more of them. Dact 23 is attached. Further, the blowout portion of the duct 23 is bendable.

The auxiliary heat source 4 can use a hot water boiler, engine cooling water (including cogeneration), an electric water heater, hot spring water, various waste heat, etc. for heating, and for cooling / heating, Although an absorption cold / hot water generator, a heat pump chiller or the like can be used, this embodiment will explain a case of using a hot water boiler.

The auxiliary heat source (hot water boiler) 4 is a boiler main body 40 and hot water (heat exchange fluid) between the boiler main body 40 and the auxiliary heat exchanger 3 through a forward hot water pipe 41 A and a return hot water pipe 41 B. ) Is circulated, and a constant flow rate valve 43 provided on the auxiliary heat exchanger 3 side of the outward hot water pipe 41A is provided. The hot water returned through the return hot water pipe 41B is supplied to the boiler main body 40. The temperature is raised to the temperature set on the side and discharged to the outward hot water pipe 41A to supply a fixed amount of hot water to the auxiliary heat exchanger 3.

The temperature setter 6 is capable of arbitrarily setting a temperature within a predetermined range, and whether the temperature detected by the temperature sensor 5 is higher or lower than the temperature set by the main setter 6. Is transmitted to the control means 7.

The control means 7 short-circuits the outgoing hot water pipe 41A and the incoming hot water pipe 41B by the short-circuit pipe 70, and installs a three-way switching valve 71 at a location where the outgoing hot water pipe 41A and the short-circuit pipe 70 intersect. In addition, a mod roll motor (MM) 72 that controls the opening / closing of the three-way switching valve 71 is provided. The opening degree of the three-way switching valve 71 is adjusted by proportional control by the temperature sensor 5, the temperature setter 6 and the modtrol motor 72. By adjusting the opening degree of the three-way switching valve 71, the temperature of the hot water circulating in the auxiliary heat exchanger 3 is adjusted with respect to the set temperature.

Next, the operation of this embodiment will be described. The indoor air conditioner 2 of the device of this embodiment is installed near each of the bats at a golf driving range, and heating is performed when it is extremely cold.

First, the operator sets the air temperature on the suction side of the air conditioner 2 to, for example, 20 ° C. by the temperature setting device 6 so as to be a normal temperature, and sets the temperature setting of the air conditioner using a remote controller or the like (heating). In this case, after setting the temperature to the maximum temperature), the operator turns on the operation switches of the auxiliary heat source 4 and the heat pump 1 to start heating each bat at the driving range.

The auxiliary heat source 4 circulates hot water between the boiler main body 40 and the auxiliary heat exchanger 3 by the pump 42 through the hot water pipe 41 to keep the temperature on the suction side of the air conditioner 2 at 20 ° C.

On the other hand, the heat pump 1 circulates the refrigerant between the heat exchanger 20 of each air conditioner 2 through the refrigerant pipe 10, absorbs heat from the outside air by the outdoor heat exchange coil, and heats it up by the compressor. The heat is radiated from each heat exchanger 20.

The air conditioner 2 sends the heat radiation from the heat exchanger 20 by the blower 22 from the suction side to the blowing side, and blows warm air from the duct 23. In this way, each at-bat is heated like a spot, and golf practice can be comfortably performed even in severe cold.

The effects of this embodiment will be described with reference to Tables 1 to 3 as well.

[0025]

[Table 1]

[0026]

[Table 2]

[0027]

[Table 3]

Tables 1 to 3 show experimental results according to the present embodiment. Table 1 shows a case where the heat pump 1 is stopped and only the auxiliary heat source (hot water boiler) 4 is operated (the air conditioner 2 is a blower). Table 2 shows the temperature measurement results when both the heat pump 1 and the boiler were operated, and Table 2 shows the temperature measurement results when both the heat pump 1 and the boiler were operated. In the table, "outside air temperature" is the temperature of outdoor air near the installation location of this device, "suction temperature" is the air temperature immediately before the auxiliary heat exchanger 3, and "blowing temperature" is the duct temperature. Refers to the air temperature at the outlet. Further, in Table 1, the intake temperature and the outlet temperature relate to the temperature of the auxiliary heat exchanger 3, and the outlet temperature means the inlet temperature of the air conditioner 2. Table 1 shows the operation results in which the auxiliary heat quantity is set so that the suction temperature of the air conditioner 2 becomes 25 ° C. As can be seen from Table 1, the suction temperature is uniform with respect to the set temperature. From this operation result, it can be seen that even if the outside air temperature is low, a general-purpose air conditioner can perform stable operation within the designed temperature range of the air conditioner without any trouble. Further, as can be seen from Table 2, in the operation of only the heat pump 1, the suction temperature is about 8. On the contrary to 4 ° C, the outlet temperature reaches only about 27.6 ° C on average. On the other hand, by operating both the boiler and the heat pump 1, as is clear from Table 3, the suction temperature was about 10.1 ° C on average and the outlet temperature was about 49.7 ° C on average. The blowing temperature could be increased as compared to the operation of only the heat pump 1. This means that, by adopting the configuration of this embodiment, the refrigeration cycle operation of the heat pump 1 is not difficult, and a comfortable air-conditioned environment can be easily created. Further, according to this embodiment, the following effects are further obtained.

(1) Since the intake temperature of the air conditioner 2 can be kept within the design temperature range of a general-purpose air conditioner even if the whole amount is outside air, the air conditioner 2 is not overloaded and stable operation is possible.

(2) The necessary space can be effectively air-conditioned even in an open space or a large space that cannot be partitioned from the outdoors. As a result, the limit of air conditioning design can be expanded.

(3) The operation cost (energy cost) can be reduced by mainly operating the heat pump having a high COP (coefficient of performance). This is especially effective when a gas heat pump is used for the air conditioner 2. Further, since the auxiliary heat source 4 is automatically controlled, if the outside air temperature approaches the set temperature, the operating rate of the auxiliary heat source 4 is reduced, and energy waste can be suppressed.

(4) Since only the heat pump 1 and the auxiliary heat source 4 are centrally managed, operations such as temperature setting are facilitated, and the operation of each air conditioner 2 can be easily managed. Moreover, since the amount of heat to the auxiliary heat exchanger 3 is automatically controlled, automatic operation is also possible.

(5) By using the air conditioner 2 and the auxiliary heat exchanger 3 in combination, it is possible to respond to fluctuations in operating conditions in a stable manner.

(6) Since the air conditioner itself does not need to be modified by adding the auxiliary heat exchanger 3 etc. to the general purpose air conditioner, it becomes possible to use the general purpose air conditioner itself, which reduces equipment costs. Has little effect.

In the present embodiment, the temperature sensor 5, the temperature setter 6 and the control means 7 are provided when the installed environment does not need to control the amount of heat to the auxiliary heat exchanger 3 finely and automatically. You don't have to. In this case, for example, by constantly monitoring the outside air temperature and adjusting and setting the operating temperature of the boiler body 40, desired air conditioning can be performed as in the present embodiment. In addition, in the present embodiment, the case where the hot water boiler for heating is used as the auxiliary heat source has been described, but even if the absorption cold / hot water generator for cooling / heating is used, effective cooling / heating may be performed. Good. Further, the positions of the three-way switching valve 71 and the pump 42 in the circuit of the auxiliary heat source 4 can be on either the forward path side 41A or the return path side 41B.

[0036]

[Effect of device]

 According to the invention described in claim 1 described above in detail, it is possible to keep the intake temperature of the air conditioner within the design temperature range of the general-purpose air conditioner, so it is possible to use the indoor air conditioner to open it comfortably. It is possible to provide an air conditioner that can effectively air-condition a space or a large space that requires air conditioning.

Further, according to the second aspect of the invention, since the heat quantity to the auxiliary heat exchanger is automatically controlled, the operation management becomes simple.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of this embodiment.

[Explanation of symbols]

 1 Heat Pump 2 Air Conditioner 3 Auxiliary Heat Exchanger 4 Auxiliary Heat Source 5 Temperature Sensor 6 Temperature Setting Device 7 Control Means

Claims (2)

[Scope of utility model registration request] 1. An air conditioner for operating an air conditioner designed for indoor use by the number of general-purpose heat pumps that can be installed within the capacity range of the heat pump, and an auxiliary heat exchanger arranged on the suction side of the air conditioner. And an auxiliary heat source that supplies a heat exchange fluid to the auxiliary heat exchanger. 2. A temperature sensor for detecting an air temperature on the suction side of the air conditioner, which is an air temperature after heat exchange in the auxiliary heat exchanger, and a temperature for which a temperature detected by the temperature sensor is set. The air conditioner according to claim 1, further comprising: a control unit that controls the amount of heat of the heat exchange fluid that is supplied from the auxiliary heat source to the auxiliary heat exchanger.