JPS58200945A - Heat source device for water heat-source heat pump type air-conditioning unit - Google Patents

Abstract

PURPOSE:To maintain the cooling efficiency of heat-source water, and to improve heating efficiency by cooling heat-source water introduced to a water heat-source heat pump type air conditioner by a cooling tower and heating said water by a condenser of a refrigeration cycle. CONSTITUTION:The water heat-source type air-conditioning units 20 are communicated with the heat source device 21 consisting of the cooling tower 22, a heat accumulating tank 23, a circulating pump 24 and a piping 25. The cooling tower 22 is provided with a cooling fan 26, an evaporator 27, a water spray pipe 28, a cooling coil 29, a water tank 30 and a receiving chamber 31 from an upper end, the water spray pipe 28 and the water tank 30 are connected through a pump 32, and a compressor 33, the condenser 34 and an expansion valve 35 are arranged into the receiving chamber 31, and communicated with the evaporator 27. The draw-out sides of the units 20 are branched partially to the cooling coil 29 and joined in a three-way valve 37, and communicated with the heat accumulating tank 23 through a heat exchange section 32 heat-exchanging with the condenser 34.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a water heat source heat pump type air conditioner that individually air-conditions each air-conditioned room in a device equipped with a large number of air-conditioned rooms, such as a pill. The present invention relates to air conditioning units, and particularly relates to improvements in heat source devices that circulate cooled or heated heat source water.

[Technical background of the invention and its problems]

This type of device is conventionally constructed as shown in FIG. That is, 1... is a water heat source heat pump type air conditioning unit (hereinafter simply referred to as a unit) arranged in each air-conditioned room. 2 is a heat source device, which will be described below. That is, a cooling fan 3, a water sprinkler pipe 4. A cooling tower 8 equipped with a cooling coil 5, a water tank 6, and a cooling bonder 7, a heater 1o equipped with a heating coil 9, a circulation inlet 11 and a distern 12, and a piping system 13 communicating with each of these components. It is.

To explain the piping system 13, each unit is 1°°.
The outlet side of is connected to the cooling coil 5. This midway portion and the outlet side of the cooling coil 5 are connected to the three-way switching valve 14 of @1, and the remaining mortar body is connected to the heater 10 via the check valve 15. Further, these intermediate portions are connected to the second three-way switching valve 16 together with the outlet side of the heater 10 . The remaining mortar body is connected to the inlet side of the unit through the circulation 1 bonder 11, and the heating device 10 is in communication with the heating device 10. are in communication.

The circulation pump 11 is driven at the same time as the units start working, and the first unit... is activated based on detection signals from various sensors (not shown). The switching method of the second three-way switching valve 14, 16 is determined, and heat@water can be supplied to the unit. During cooling operation, the heat source water absorbs heat from the unit and rises above a predetermined water temperature. Therefore, as shown by the solid line arrow in the figure, the air is guided from the unit 1 to the cooling tower 8, and its temperature is lowered. Then, it is sucked into the shield ring chimp 11 via the three-way switching valve 14.16 of No. 1.
・Derived to.

When heating is in operation, heat! The raw water is sent to Unitt... to rescue the swallow and the water temperature drops below the predetermined temperature. Therefore, as shown by the solid line arrow in the figure, the three-way switching valve 14 of the valve 1 is 'T:JJ4S, 71
T] 4 into the heating device 10. Here, the circulation pump 1 is heated by the heating coil 9 and then passed through the three-way switching valve 16 @2.
1 and then led out to each unit again. Furthermore, if the fever S+ is too high and water is insufficient, water will be supplied from Jistern 12.

By the way, the energy required to cool the heat source water is
This is the electrical energy that drives the cooling water bond 7 and the cooling fan 3, and is relatively small in amount. On the other hand, the energy required to heat the water is sent from a heating source to the heating coil 9, and is usually done using an electric water heater or a hot water neif using gas, petroleum, etc. be done. Therefore, the required energy is large and the running cost is high. Recently, energy saving has been promoted, and there is a strong demand for this in the heat source device 2, but the current situation is that the light component t4 is not reversed. Moreover, it naturally takes up a lot of space and is large in size. [Objective of the Invention] The present invention maintains the cooling efficiency of heat source water, improves heating efficiency, saves energy during heating, and saves installation space. SUMMARY OF THE INVENTION The present invention aims to provide a heat source device for a hydrothermal Δ9 heat pump type air conditioning unit that achieves a reduction in heat source water. Cooled in refrigeration cycle equipment,
・Heating is performed using a condenser, and all of the above refrigeration cycle devices are incorporated into a cooling tower.

[Embodiments of the invention]

An embodiment of the present invention will be described below based on Figure 5g2. In the figure, numerals 20, . . . are filter water heat source heat pump air conditioning units (hereinafter abbreviated as units) arranged in each air-conditioned room. Each of these units)? 17...
・ communicates with the NR source device 21. This heat stretching device 21 is
It is separated from the cooling tower 22 , heat storage tank 23 , circulation bonder 24 and piping system 25 . The cooling fr 22 includes a cooling fan 26 and a depression generator 27 from the top end to the bottom end.
, the water sprinkler pipe 28, the cooling coil 29, the water WI 30, and the storage chamber 31 are arranged in this order. The water sprinkler pipe 28 and the ice tank 30 are communicated with each other through a pipe provided with a cooling water bond 32 in the middle. Inside the storage chamber 3, a compressor 33, a condenser 34,
An electric expansion valve 35 of the electric 9-lux drive type, which is a low pressure device, is provided, and these and the evaporator 27 are communicated via a refrigerant pipe. Therefore, the refrigeration cycle device 36 is housed in the cooling tower 22. The piping system 25 will be described below.

That is, the outlet side of each unit 20... is branched to connect to the cooling coil 29 and the three-way switching fF-37. The outlet side of the cooling coil 29 is connected to the other die of the three-way switching valve 37, and the remaining die is connected to the heat storage tank 23 via the heat exchange section 32, which is piped along the condenser 34 so as to be able to exchange heat.
Introduction 1111VC is connected. The outlet side of the heat storage tank 23 is connected to the inlet side of each unit 20.

The hot rod device 21 subjected to F14ag in this manner is electrically controlled by an electricity supply/tsukuda circuit 40 which will be described later. f, that is, 41 is an outside temperature sensor installed near the cooling 422, 42 is a heat/water sensor attached to the outlet side piping of each unit 20, and 43 is (installed on the suction side of the layered bonder 24). The suction pressure sensor is
These are all drowsily connected to a control input 44. The data sent to the control unit 44 is guided to the control output unit 45 where it is arithmeticized, and is electrically connected to the cooling fan 26, cooling water cylinder f32, compressor 33, and electric expansion valve 35.
and a three-way switching valve 37 (which can be sent.

Thus, the circulation pump 24 is driven when the unit 200 starts working. The required direction of the three-way switching valve 37 is determined by the control input section 44 that receives the detection signals from each sensor 41, 42, and 43.
This performance number is determined after waiting for an electrical signal from the control output section 45 that sends the result. During cooling operation of each unit 20..., the guided heat source absorbs heat and reaches a specified temperature or higher. The hot melting ice drawn out from here is guided to a cooling coil 29 in the cooling tower 22 as shown by the broken line arrow in the figure, and is cooled by water sprayed from a water sprinkling pipe 28. After cooling, the heat is introduced into each unit 20 again via the three-way switching valve 37 - heat exchanger 38 - heat storage tank 23 - circulation pump 24.
The freezing cycle device 36 operates and stops depending on the water temperature (+) and the outside air temperature, but does not operate.

When each unit 20.- performs heating operation, the hot water releases heat and becomes lower than the specified temperature. The heat S derived from this force 1
+ indicates the three-way switching valve 37 switched as shown by the broken line arrow in the figure.
is guided to the heat exchange section 38 via. At this time, rice field 4 field 3
3 is driven to perform refrigerating operation, the refrigerant is heated to condensate in the condenser 34, and the heat of condensation is released to the heat exchange section 38. Therefore, the temperature of hot water increases. and heat storage 4
23 - Circulating bond 24 and each unit 20 again...
When the water is being led to the water, the electric expansion valve 35 controls the refrigerant circulation in order to maintain the heated water at a constant temperature. It goes without saying that the one word for adjusting the opening degree of the electric expansion valve 35 is output from the control output section 45. Note that the cooling water bond 32 is stopped, and the cooling fan 2g is driven to blow heat exchange air to the evaporator 27.

In this way, in the above embodiment, the outside temperature sensor? 41,
Various sensors such as the heat source water sensor 42 and the suction pressure sensor 43, the person using Maibon, and the output control unit 44.4
5, it becomes possible to control the cooling fan 26 and other equipment automatically and in a non-dispersive manner, which is highly effective in terms of operation management.

Furthermore, the electric expansion valve 35 is of an electric pulse drive type that can respond proportionally to changes in load, outside air conditions, etc., so the reliability of refrigeration cycle operation is the same as above, and the energy saving effect is excellent.

〔Effect of the invention〕

In the present invention, if the water is higher than a predetermined temperature, it is guided to a cooling tower to cool it, and if the water is lower than the predetermined temperature, it is heated by heating it in a refrigeration cycle condenser. Because of this, hot water can be maintained at a constant temperature throughout the year, eliminating the need for conventional heating devices such as water heaters and gas/oil hot water heaters, improving safety and reducing maintenance and inspection times. It is easy and durable.Moreover, since the refrigeration cycle device is installed inside the cooling tower, the installation space is reduced and the system is compact.

[Brief explanation of the drawing]

Figure 1 is a piping system reading diagram showing a conventional example of the present invention, W7IJ2
The figure is a piping system 3 and an electric sill circuit diagram showing an embodiment of the present invention. 20・-Hydrothermal heat, +=Nde type air conditioning unit,
29... Cooling coil, 26... Cooling fan, 28.
・・Water pipe, 30・−・Water tank, 32・・Cooling pump,
22... Cooling tower, 34... Condenser, 36... Refrigeration cycle device. Applicant's agent Patent attorney Suzue Takehiko - Ten C'JI
(N2

Claims (1)

[Claims] In a device that circulates heat and water in a water heat source heat pump type air conditioning unit that individually air-conditions a plurality of air-conditioned rooms, when the heat S water reaches a predetermined temperature or higher, it is guided and cooled. cooling fill. A cooling tower that grows cooling fans, water pipes, water tanks, cooling inlets, etc., and a refrigeration system that includes a condenser, etc. that is installed in this cooling tower and heats the heat source water when it reaches a predetermined temperature or higher. A thermal g device for a water heat source heat pump type air conditioning unit, characterized in that it is equipped with a Nycle g device.