JPS6240301Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an air conditioner, particularly an air conditioner with excellent heat recovery operation.

A conventionally known device of this type is shown in FIG. In Figure 1, 1 is 2 to 7
2 is a refrigerant compressor; 3 is an air conditioner composed of
4 is an air-cooled condenser, 4 is an expansion valve, 5 is an evaporator, 6 is a refrigerant pipe connecting each device 2 to 5, 7 is a blower, 8 is a load-side heat exchanger, and 9 is a reheater.

Next, the operation will be explained. The refrigerant gas compressed by the refrigerant compressor 2 becomes a high temperature and high pressure refrigerant gas,
The refrigerant gas flows into the air-cooled condenser 3 via the refrigerant pipe 6, where the refrigerant gas becomes a condensed liquid. At this time, the heat of condensation is radiated to the atmosphere by the blower 7. Further, the condensed refrigerant liquid is depressurized by the expansion valve 4 and flows into the evaporator 5. The evaporator 5 exchanges heat with the circulating water from the load-side heat exchanger 8 to produce cold water. The cold water is further circulated to the load side heat exchanger 8 by a pump,
For example, it has the effect of cooling indoor air and lowering the room temperature. At this time, it is necessary to control the temperature and humidity at a constant level depending on the purpose of the room, and the temperature and humidity are adjusted by the reheater 9. Conventionally, the reheater 9 is generally a hot water coil or a steam coil using an electric heater or a boiler as a heat source. Note that the refrigerant that has undergone heat exchange in the evaporator 5 becomes gaseous and flows into the refrigerant compressor 2.

In conventional air conditioners, the heat source for reheating is hot water from an electric heater or boiler, as described above.
The drawback was that it had to be obtained from sources such as steam.

This idea was made in order to eliminate the drawbacks of conventional ones, and the purpose was to provide an air conditioner that could recover the condensation heat that was radiated to the atmosphere and use it as a heat source to reheat this heat. There is.

An embodiment of this invention will be described below based on the drawings. In FIG. 2, 10 is a hot water coil for heat recovery, 11 is a hot water temperature detection thermostat, 12 is a group of multiple blowers, 13 is a hot water pump, and 14 is hot water piping.

Note that the other configurations are the same as those of the prior art, so explanations will be omitted.

As shown in FIG.
When the hot water temperature is low, the number of operating blowers is reduced by the hot water temperature detection thermostat 11, and when the hot water temperature is high, the number of operating blowers is increased, and the amount of heat radiated from the air-cooled condenser is increased. is now adjusted automatically. The temperature-adjusted hot water is circulated to the reheater 9 via the hot water pipe 14 by the hot water pump 13, and is used as a heat source for reheating.

In the above embodiment, the hot water temperature detection thermostat 11 was placed in the heat recovery hot water coil 10.
It is also possible to arrange it at any position in the hot water piping 14. Further, in this embodiment, the air-cooled condenser 3 and the heat recovery hot water coil 10 are arranged in series, but they can also be arranged in parallel.

As described above, the configuration is such that the amount of heat radiated to the atmosphere by the air-cooled condenser 3 can be recovered by the heat recovery hot water coil 10, and furthermore, the hot water temperature detection thermostat 11 controls the number of blowers. Because it is possible to obtain a stable hot water temperature by doing this, the reheating device can be made at low cost, and the operating cost is also low.

[Brief explanation of drawings]

FIG. 1 is a system diagram showing the relationship between a conventional air conditioner and the load side, and FIG. 2 is a system diagram showing the relationship between the air conditioner and the load side according to an embodiment of the invention. 1... Air conditioner, 2... Refrigerant compressor, 3...
...air-cooled condenser, 4...expansion valve, 5...evaporator,
6...Refrigerant piping, 7...Blower, 8...Load side heat exchanger, 9...Reheater, 10...Hot water coil for heat recovery, 11...Hot water temperature drop detection thermostat, 1
2...Multiple blower group, 13...Hot water pump, 1
4...Hot water piping. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Scope of utility model registration request] An air-cooled condenser with multiple blower groups, a hot water coil for heat recovery placed between the air-cooled condenser and the refrigerant compressor, and a system that detects the water temperature in the hot water coil for heat recovery and converts it into the detected value. Based on the heat recovery hot water coil, the hot water detection thermostat is equipped with a hot water detection thermostat that controls any number of the blowers so that the hot water in the heat recovery hot water coil reaches a predetermined temperature. An air conditioner characterized by supplying air to a container.