JP2002054834A - Refrigerating cycle device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerating cycle device to effect sprinkling on a condenser without the occurrence of a response delay, reduce a consumption power of an air conditioner, and be compatible between comfortability and energy saving. SOLUTION: Based on an outside air temperature detected by an outside air temperature detecting means 34, a future value of an outdoor air temperature is predicted. Based on the prediction value of the outside air temperature, a sprinkle amount is computed by a sprinkle amount computing means 26, and the sprinkle amount is controlled by a sprinkle amount controlling means 27 such that a sprinkle amount is adjusted to the computing value.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigeration cycle apparatus for spraying water onto a refrigerant condenser such as an air conditioner or a refrigerator to improve heat exchange efficiency.

[0002]

2. Description of the Related Art FIG.
FIG. 1 is a configuration diagram of a conventional refrigeration cycle device disclosed in Japanese Patent Laid-Open No. H10-208, and shows a watering facility for vehicle air conditioning. In the figure, a refrigeration cycle 51 includes a condenser 52, a sub-condenser 53, an expansion valve 54, an evaporator 55, and a compressor 56. Below the evaporator 55, there is provided a container 57 for receiving the condensed water attached to the evaporator 55, and a nozzle 58 for discharging the condensed water in the container 57 to the condenser 52 or the sub-condenser 53 or both.

Further, a pressure sensor 59 for measuring the pressure in the refrigeration cycle 51 and a vehicle interior temperature sensor 60 for measuring the temperature are provided. The pressure sensor 59 is installed at the outlet of the sub-condenser 53. Therefore, the pressure signal detected by the pressure sensor 59 and the vehicle interior temperature sensor 60
And the temperature signal detected by the control unit 61 are input to the control device 61. Then, the control device 61 sends out a supply amount signal for controlling the supply amount of the condensed water supplied into the container 63 on the front of the condenser by the pump 62.

[0004]

In the above-described conventional refrigeration cycle apparatus, since the condensed water is released to the condensed water based on the pressure signal and the temperature signal, when the pressure or the temperature changes, the discharging operation is performed. There is a problem that a response delay occurs. In addition, there is a problem that the cooling effect of the condenser is not so much obtained only with the condensed water, and the comfort may be hindered because the comfort of the indoor environment is not considered.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and water is sprinkled on a condenser without delay in response, thereby reducing power consumption of an air conditioner and wasting water. An object of the present invention is to provide a refrigeration cycle device that performs water spraying efficiently without controlling the indoor temperature and indoor humidity in the air-conditioned area, and achieves both comfort and energy saving.

[0006]

SUMMARY OF THE INVENTION A refrigeration cycle apparatus according to the present invention includes a water sprinkling means for sprinkling water to a condenser, an outside air temperature detecting means for detecting an outside air temperature, and a water sprinkling amount to the condenser based on the outside air temperature. A watering amount calculating means for calculating, and a watering control means for controlling a watering amount by the watering means so as to be a watering amount by the watering amount calculating means, based on the outside air temperature detected by the outside air temperature detecting means, A future value of the outside air temperature is predicted, and the watering amount is calculated by the watering amount calculating means based on the predicted value of the outside air temperature.

[0007] Further, water sprinkling means for sprinkling water to the condenser, outside air temperature detecting means for detecting the outside air temperature, outside air humidity detecting means for detecting the outside air humidity, and the amount of water sprayed to the condenser based on the outside air temperature and the outside air humidity. And a watering control means for controlling the watering amount by the watering means so that the watering amount becomes the watering amount by the watering amount calculating means, and the watering amount is detected by the outside air temperature detecting means and the outdoor air humidity detecting means. The future value of the outside air temperature and the outside air humidity is predicted based on the outside air temperature and the outside air humidity, and the watering amount is calculated by the watering amount calculating means based on the predicted values of the outside air temperature and the outside air humidity.

[0008] The present invention further comprises operating capacity control means for controlling the operating capacity of the compressor, and predicts a future value of the operating capacity based on the operating capacity detected by the operating capacity control means. The watering amount is calculated by the watering amount calculating means based on the predicted value of the outside air temperature or the outside air humidity.

[0009] Further, there is provided a power consumption detecting means for detecting the power consumption of the refrigeration cycle apparatus, and a future value of the power consumption is predicted based on the power consumption detected by the power consumption detecting means. The watering amount is calculated by the watering amount calculating means on the basis of the predicted value of the outside air temperature or the outside air humidity.

In addition, the apparatus is provided with a condensing temperature detecting means for detecting the condensing temperature of the refrigeration cycle device, and predicts a future value of the condensing temperature based on the condensing temperature detected by the condensing temperature detecting means, The watering amount is calculated by the watering amount calculating means on the basis of the predicted value of the outside air temperature or the outside air humidity.

Further, the apparatus is provided with a condensing pressure detecting means for detecting the condensing pressure of the refrigeration cycle device, and predicts a future value of the condensing pressure based on the condensing pressure detected by the condensing pressure detecting means. The watering amount is calculated by the watering amount calculating means based on the predicted value of the outside air temperature or the outside air humidity.

Further, an indoor temperature detecting means for detecting a dry bulb temperature of indoor air to be cooled, an indoor humidity detecting means for detecting humidity of indoor air to be cooled, and an evaporating temperature detecting means for detecting an evaporating temperature of an evaporator. Means, watering means for watering the condenser, watering amount calculating means for calculating the watering amount to the condenser, and watering control for controlling the watering amount by the watering means such that the watering amount is calculated by the watering amount calculating means. Means for calculating the amount of water sprayed on the condenser based on the indoor temperature by the indoor temperature detecting means, the indoor humidity by the indoor humidity detecting means, and the evaporation temperature by the evaporating temperature detecting means.

[0013] Further, there is provided an evaporator air volume control means for controlling the air volume of a blower for blowing to the evaporator and / or a condenser air volume control means for controlling the air volume of a blower for blowing to the condenser. The amount of air blown to the evaporator and / or the condenser is controlled by the evaporator air flow control means and / or the condenser air flow control means in accordance with the water spray amount calculated by the means.

Watering means for watering the condenser, watering control means for controlling the amount of watering by the watering means, and first water provided below the surface of the condenser and detecting water on the surface of the condenser. Detecting means, provided below the condenser, and provided with second moisture detecting means for detecting moisture flowing down from the condenser surface, and a state in which moisture is detected by the first moisture detecting means by the watering control means; In addition, the amount of water sprayed by the water spraying means is controlled so that water is not detected by the second water detecting means.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 FIG. 1 is a configuration diagram of a refrigeration cycle apparatus according to Embodiment 1 of the present invention, FIG. 2 is a view showing a relationship between outside air temperature and power consumption depending on the presence or absence of water spraying in this refrigeration cycle apparatus, and FIG. In FIG. 4, a diagram showing the required watering amount that can be used effectively with respect to the outside air temperature, FIG. 4 is a graph showing a prediction calculation of a future value of the outside air temperature To in this refrigeration cycle device, and FIG. It is a flow chart which shows sprinkling amount control by outside air temperature.

In the figure, the refrigeration cycle apparatus has an indoor unit 3 installed in a room 4 which is an area to be air-conditioned, and is connected to an outdoor unit 2 outside by a refrigerant pipe. A refrigerating cycle is constituted by the indoor unit 3 and the outdoor unit 2, and a compressor 11 for compressing a refrigerant;
A condenser 12, a throttle mechanism 13 showing an expansion valve, an evaporator 14,
The four-way valve 15 is connected by a refrigerant pipe. The condenser 12 is provided with a condensing temperature detecting means 36 and a condensing pressure detecting means 37. Further, an indoor temperature detecting means 31 and an indoor humidity detecting means 32 are installed in the room 4.

In the first embodiment, since the description will be made for cooling, the evaporator 1 is installed in the indoor unit 3 by the four-way valve 15.
4. The condenser 12 is set in the outdoor unit 2. Condenser 1
2. A condenser blower 16 and an evaporator blower 17 are installed close to the evaporator 14, respectively. The evaporator 14 is provided with an evaporating temperature detecting means 33 for detecting the evaporating temperature of the refrigerant, and the input side of the controller 18 for controlling the operation of the refrigeration cycle apparatus is provided with the indoor temperature detecting means 31 and the indoor humidity detecting means 3.
2. The evaporating temperature detecting means 33 is connected, and the compressor 11, the evaporator blower 17, and the condenser blower 16 are connected to the output side. The power supply is connected to power consumption detection means 38 for detecting the power consumption of the outdoor unit 2.

The sprinkling unit 1 is installed along with the condenser 12 of the outdoor unit 2. The spraying unit 1 is connected to a spray nozzle 21, a flow regulating valve 22, and a strainer 23, which are watering means, by a water supply pipe having a water supply port 24, and a watering controller 25, an outside air temperature detecting means 34,
It comprises an outside air humidity detecting means 35. Watering controller 25
Is connected to an outside air temperature detecting means 34, an outside air humidity detecting means 35, a power consumption detecting means 38, and a controller 18,
A flow control valve 22 is connected to the output side. The watering controller 25 has a watering amount calculating means 26 and a watering control means 27.

Next, the operation will be described. First, FIG.
Indicates the relationship between the outside air temperature and power consumption depending on the presence or absence of watering,
With watering is when a certain amount of watering is performed. Therefore, looking at the difference in input of power consumption depending on whether or not watering is performed, the input difference decreases as the outside air temperature decreases.If the outside air temperature is low, a part of the watering amount is not used effectively. I understand. Therefore, FIG. 3 shows the necessary watering amount G that can be used effectively with respect to the outside air temperature To. The required watering amount decreases as the outside air temperature To decreases, and is expressed, for example, by the following equation (1). G = 0.1711 · To + 3.9736 (1) In the watering amount calculation means 26, the calculation of Expression (1) is performed from the outside air temperature To, and the required watering amount G is determined.

Therefore, the required watering amount G may be sprayed from the watering unit to the condenser 12 in accordance with the outside air temperature. However, when the outside air temperature is increasing or decreasing,
Adjusting the watering rate based on the current outside air temperature may cause a time delay in increasing or decreasing the watering rate, and the time delay may cause the air conditioner to stop due to high pressure cut. Therefore, a future value of the outside air temperature To is predicted, the required watering amount G is determined based on the predicted value, and the time delay is compensated.

FIG. 4 shows an example of the prediction value calculation. The symbol y in the figure is the outside air temperature To. Assuming that the current time is t0, the fixed time interval τ is from the present to the past at the time t0, t-1, and t-2, and the outside air temperature detection values are y0, y-1, and y-2, respectively, τ hours after the present The outside air temperature predicted value y1 at time t1 can be expressed as the following equation (2). y1 = (y0−y−1) ² / (y−1−y−2) + y0 (2)

A description will now be given, with reference to FIG. 5, of the watering amount control in the case where the time delay of the outside air temperature is compensated for by the arithmetic expression (2). First, in step S10, the outside air temperature To
Is detected. This value is always up to 3 points, ie t0,
The outside air temperature detection values y0, y-1, and y-2 at the times t-1 and t-2 are stored in the watering controller 25. In step S11, a predicted value Toy of the outside air temperature is calculated from the detected and stored three outside air temperatures To by the equation (2). In step S12, a comparison is made between the predicted outside air temperature value Toy and the set outside air temperature To * preset as a reference temperature for watering to determine whether To is equal to or higher than To *. Here, for example, the set outside air temperature
Set To * = 30 ° C.

If the predicted outside air temperature value Toy is equal to or higher than the set outside air temperature To *, the process proceeds to step S13, where
The water spray amount G is calculated from the predicted value of the outside air temperature Toy using (1). In step S14, it is determined whether or not a certain fixed control timing such as an interval of several tens of seconds has elapsed, and if it has elapsed, the process returns to step 10 and the above operation is repeated.

In FIG. 1, the water spray amount is controlled by detecting the outside air temperature by the outside air temperature detecting means 34 in FIG.
The water spray amount calculating means 26 calculates an outside air temperature predicted value from the stored outside air temperature detection value, and calculates a required water spray amount G from the predicted value. The watering control means 27 adjusts the opening of the flow control valve 22 so as to reach the required watering amount G, and repeats the above operation at a certain control timing.

As described above, in the first embodiment, in addition to the effect of reducing the power consumption by watering, water can be used without any excess or shortage with respect to the outside air temperature, and further, the response delay of the watering operation is compensated. be able to. Although the above equation (2) is used for predicting the outside air temperature, it can also be used for predicting the operating frequency, power consumption, condensing temperature, and condensing pressure caused by the increase or decrease of the air conditioning load. Further, instead of the equation (2), prediction by simple linear approximation can be used instead.

Embodiment 2 FIG. In the first embodiment, as a method of detecting the indoor load, the method of detecting the outside air temperature and calculating the required amount of water spray and spraying water is shown. However, the detection value other than the outside air temperature may be used to calculate the required amount of water spray and spray water. Can be. In the second embodiment, water sprinkling based on a detected value other than the outside air temperature will be described in detail. The configuration diagram of the refrigeration cycle device is as follows:
It is the same as FIG.

FIG. 6 is a diagram showing the relationship between the operating frequency, which is the operating capacity of the compressor of the refrigeration cycle apparatus according to Embodiment 2 of the present invention, and the required watering amount. In the figure, the frequency fz
The required watering rate increases with the rise of
It is expressed as (3). G = 0.0613 · fz + 6.2149 (3) Here, it can be easily imagined that the power consumption, the condensing temperature, and the condensing pressure simultaneously increase on the refrigeration cycle side as the frequency increases.

FIG. 7 is a diagram showing the relationship between the power consumption P and the required watering amount of the refrigeration cycle apparatus according to Embodiment 2 of the present invention. In the figure, the required watering amount increases as the power consumption P increases, and is represented, for example, by the following equation (4). G = 0.0084 P + 5.7879 (4)

FIG. 8 is a diagram showing the relationship between the condensing temperature Tc and the required watering amount of the refrigeration cycle apparatus according to Embodiment 2 of the present invention. In the figure, the required watering amount increases as the condensing temperature Tc increases, and is expressed, for example, by the following equation (5). G = 1.2223 · Tc + 24.24 ・ ・ ・ (5)

FIG. 9 is a diagram showing the relationship between the condensing pressure Pc and the required watering amount of the refrigeration cycle apparatus according to Embodiment 2 of the present invention. In the figure, the required watering amount increases as the condensing pressure Pc increases, and is expressed, for example, by the following equation (6). G = 3.9832 · Pc + 36.303 (6) Therefore, even if any of the operating frequency, power consumption, condensing temperature, and condensing pressure is detected, the required watering amount can be calculated.

Another factor affecting the required watering amount is the outside air humidity. FIG. 10 is a diagram showing the relationship between the outside air humidity Ro outside air temperature To and the required watering amount of the refrigeration cycle apparatus according to Embodiment 2 of the present invention. In the figure,
When the outside air humidity Ro is low, the sprinkled water is easy to evaporate and the latent heat of evaporation can be used effectively, so the amount of water sprinkled increases.On the other hand, when the humidity is high, the sprinkled water becomes difficult to evaporate, and unnecessary sprinkling is waste Become. Therefore, the relationship between the outside air humidity Ro, the outside air temperature To, and the required watering amount is expressed, for example, by the following equation (7). G = (-0.2598 · To + 0.0605) · Ro + (0.265 · To + 3.8953) ・ ・ ・ (7)

FIG. 11 is a flow chart showing the control of the watering amount by the outside air temperature, the power consumption and the outside air humidity of the refrigeration cycle apparatus according to Embodiment 2 of the present invention. The control flow taking the above conditions into account is shown. The required watering amount can be calculated by detecting any one of the power consumption, the condensing temperature, and the condensing pressure. Therefore, the power consumption will be described here as an example.

First, at step S20, the outside air temperature detection means 34 detects the outside air temperature To. In step S21, the outside air humidity Ro is detected by the outside air humidity detection means 35. In step S22, the power consumption P is detected by the power consumption detecting means 38. These values are changed up to three points every moment, that is, the detected values y0, y-1, and y-2 of the outside air temperature, the outside air humidity, and the power consumption at the times t0, t-1, and t-2 are determined by the watering controller 25. Is stored.

In step S23, step S1 in FIG.
As in the case of 2, it is determined whether or not water is to be sprayed, for example, by comparing with the set outside air temperature. Therefore, in the case of watering, the process proceeds to step S24, and the watering amount calculating means 26 calculates the equation from the three points of power consumption P detected and stored in step S22.
The predicted value Py of the power consumption P is calculated according to (2), and in step S25, the required watering amount G 'is obtained from the predicted value Py by using equation (4).

In step S26, the watering amount calculating means 26
From the three points of outside air temperature To / outside humidity Ro detected and stored in step S21, the outside air temperature To /
The predicted value Toy / Roy of the outside air humidity Ro is calculated, and the predicted value To
From y / Roy, the correction value ΔG of the watering amount is obtained by equation (7).
Then, in step S27, the required watering amount G is obtained from the watering amount G 'and the corrected watering amount △ G, and the watering control means 27 adjusts the opening of the flow rate adjusting valve 22 so that the required watering amount G is obtained. In step S28, it is determined whether or not a certain fixed control timing such as an interval of several tens of seconds has elapsed. If the certain control timing has elapsed, the process returns to step S20 and the above operation is repeated.

In the above description, the power consumption is detected. However, it goes without saying that the same operation can be performed by detecting the frequency, the condensing temperature, and the condensing pressure. As described above, in the second embodiment, in addition to the effect of reducing the power consumption due to the water spray, it is necessary to use the water with no excess or shortage with respect to the operating frequency, the condensation temperature, the condensation pressure, the power consumption, the outside air temperature, and the outside air humidity. And a response delay of the watering operation can be compensated.

Embodiment 3 FIG. 12 is a diagram showing the evaporation temperature of the evaporator with respect to the operating frequency of the compressor in the refrigeration cycle apparatus according to Embodiment 3 of the present invention, and FIG. 13 is the sensible heat ratio (hereinafter referred to as the operating frequency of the compressor in this refrigeration cycle apparatus). , SHF), and FIG. 14 is a diagram showing the outlet temperature of the evaporator with respect to the operating frequency of the compressor of the refrigeration cycle apparatus. The configuration diagram of the refrigeration cycle device is the same as that of FIG.

Next, the comfort of the air-conditioned area will be considered. First, in order to improve the comfort of the air-conditioned area, it is necessary to control indoor humidity in addition to indoor temperature control.
In the case of cooling, dehumidification is important. Ideally, a dehumidifying method is to arrange an evaporator and a reheater side by side in a room, but the structure becomes complicated, the cost increases, and the method is not practical. Then, considering the dehumidification by the evaporator 14 as another method, it is necessary to lower the evaporation temperature and the SHF of the refrigeration cycle to dehumidify.

In order to lower the evaporating temperature, there are methods such as increasing the operating frequency of the compressor 11, reducing the amount of air blown by the evaporator blower 17, and increasing the amount of air blown by the condenser blower 16. However, when the operating frequency of the compressor 11 is increased, the electric input is increased, and when the amount of air blown by the evaporator blower 17 is reduced, the blow-out temperature is lowered and the comfort of the air-conditioned area is impaired (FIG. 14). Air blower 16
However, there is a problem that when the air blowing amount is increased, the effect of reducing the evaporation temperature is not so much different.

Therefore, when water is sprayed on the condenser 12, the evaporation temperature of the evaporator 14 decreases as shown in FIG. 12, and as a result, the SHF decreases as shown in FIG. There is an advantage that the blowout temperature and the air volume of the condenser blower 16 remain unchanged, and do not decrease.
From the above, by controlling the amount of water sprayed to the condenser 12, it becomes possible to control the humidity of the air-conditioned area without the above-mentioned problems.

Next, the control of the humidity of the air-conditioned area by controlling the amount of water sprayed on the condenser will be described. FIG. 15 shows the indoor air condition (indoor temperature Tr, indoor humidity Rr) and the target indoor air condition (target indoor temperature Tr *, target indoor humidity Rr *) in the psychrometric diagram of the refrigeration cycle apparatus according to Embodiment 3 of the present invention. FIG. 5 is a diagram showing a relationship between the target evaporation temperature Te * and the target evaporation temperature Te *. In the figure, the indoor air state corresponds to the inlet air state of the evaporator 14, and the point at which the straight line connecting the indoor air state and the target indoor air state intersects with the saturation line is the target evaporation temperature Te *. That is, the state of this gradient is the SHF of the refrigeration cycle device and the air conditioning load S of the conditioned room.
This corresponds to a state where HF is equal. Therefore, if the evaporation temperature Te is converged to the target evaporation temperature Te * obtained here, the indoor air state can be changed to the target indoor air state, which will be described below with reference to the drawings.

FIG. 16 is a control block diagram of the watering amount control of the room temperature and the room humidity in the refrigeration cycle apparatus according to Embodiment 3 of the present invention. In the figure, in step S40, the indoor temperature difference ΔTr between the indoor temperature Tr and the target indoor temperature Tr * by the indoor temperature detecting means 31 is calculated, and in step S41, the operating frequency fz of the compressor 11 is calculated based on the indoor temperature difference ΔTr. Set. This is a well-known technique.

In step S42, the room temperature detecting means 3
1 from the indoor temperature Tr, the indoor humidity Rr, the target indoor temperature Tr *, and the target indoor humidity Rr * by the indoor humidity detecting means 32.
The target evaporation temperature Te * is calculated from the relationship of the psychrometric chart. In step S43, a temperature difference ΔTe between the target evaporation temperature Te * and the current evaporation temperature is determined. In step S44, the watering amount G (G = 0.4 · △ Te + 0.7) is calculated from the evaporation temperature difference ΔTe, and the watering control means 27 adjusts the opening of the flow rate regulating valve 22 so that the required watering amount G is obtained. Then, water is sprayed to the condenser 12. Thus, the indoor air condition is set to the target indoor temperature Tr * and the target indoor humidity Rr *.

As described above, in the third embodiment, in addition to the effect of reducing the electric input by watering, the control of the room temperature and the room humidity becomes possible, and both energy saving and improvement in comfort can be achieved.

Embodiment 4 In the third embodiment, it is possible to control the indoor temperature and the indoor humidity by spraying water to the condenser 12, but if the air conditioning load SHF of the air-conditioned area is even smaller, it becomes difficult to control the indoor humidity only by spraying water. There is. Therefore, in addition to the method of the third embodiment, the control of the blower amount of the condenser blower 16 and the blower amount of the evaporator blower 17 to widen the range of the humidity control will be described below with reference to the drawings. .

FIG. 17 is a control flowchart for controlling the watering amount of the room temperature and the indoor humidity, and controlling the amount of air blown to the evaporator and the condenser in the refrigeration cycle apparatus according to the fourth embodiment of the present invention. The configuration diagram of the refrigeration cycle device is the same as that of FIG. The evaporator air flow control means and the condenser air flow control means represent the controller 18.

Next, the operation will be described. In the figure, the operations in steps S50 to S57 are the same as the operations in the block diagram of FIG.
Description is omitted. In step S58, step S57
The watering amount G obtained in the above is the maximum watering amount Gmax (maximum possible value)
Is determined, and if it is exceeded, the amount of watering G
Is set to Gmax, and the air flow Vc of the condenser blower 16 is increased in step S59. In step S60, it is determined whether or not the air flow Vc of the condenser blower 16 has exceeded the maximum air flow amount Vcmax of the condenser blower 16, and if so, the air flow Vc of the condenser blower 16 is set to Vcmax. ,
Proceeding to step S61, the air flow Ve of the evaporator air blower 17 is reduced. These series of operations make it possible to lower the evaporation temperature.

If the sprinkling amount G does not exceed the sprinkling amount maximum value Gmax (maximum possible value) in step S58, the blowing amount Vc of the condenser blower 16 is reduced in step S63, and in step S64, the evaporator blower is reduced. The amount of air Ve 17 is increased. Further, in step S60, the condenser blower 1
6 is the maximum air flow Vcm of the condenser blower 16
If it does not exceed ax, the flow rate Ve of the evaporator blower 17 increases in step S64. Then, step S6
In 2, it is determined whether a certain control timing such as an interval of several tens of seconds has passed, and if it has passed, the flow returns to step S51 to repeat the above operation.

As described above, in the fourth embodiment, in addition to the effect of reducing the electric input by watering, the control of the room temperature and the room humidity can be performed in a wide temperature and humidity range, and both energy saving and improvement in comfort can be achieved. .

Embodiment 5 FIG. 18 is a partial configuration diagram of a refrigeration cycle apparatus according to Embodiment 5 of the present invention, and shows only the configuration of a watering unit and a condenser. The configuration other than the water sprinkling unit and the condenser is not shown, but is the same as that of FIG. In the figure, the same or corresponding parts as those in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted. A first moisture sensor 40 is attached to the lower end surface of the condenser 12 and detects the presence or absence of moisture on the surface of the condenser 12. A first moisture sensor 41 is attached below the vicinity of the condenser 12 and detects water flowing down from the condenser 12. It is a second moisture sensor for detecting the presence or absence. Note that the first moisture sensor and the second moisture sensor represent a first moisture detecting unit and a second moisture detecting unit, respectively.

Next, the operation will be described. In the present embodiment, an operation of watering the condenser 12 will be described. In order to spray water most efficiently, it is necessary to set the amount of water sprayed so that the condenser 12 is uniformly wet and the water does not flow down below the condenser 12. Therefore, water spraying is performed by the spray nozzle 21 so that the first moisture sensor 40 detects the presence of moisture on the lower end surface of the condenser 12 and the second moisture sensor 41 does not detect moisture downward away from the condenser 12. I do.

That is, when the first moisture sensor 40 and the second moisture sensor 41 do not detect water and are in a dry state, the sprinkling control unit 25 increases the opening of the flow control valve 22 to increase the sprinkling. Increase the amount of water. When both the first moisture sensor 40 and the second moisture sensor 41 are wet, the opening of the flow control valve 22 is reduced to reduce the amount of water spray.
Further, when the first moisture sensor 40 is in a wet state and the second moisture sensor 41 is in a dry state, water is efficiently sprinkled, so that the opening of the flow control valve 22 is not changed. , Keep the current watering rate. In this embodiment, only the watering operation has been described, but it goes without saying that operations other than watering may be performed as in the above embodiments.

As described above, in this embodiment, in addition to the effect of reducing the electric input by watering, the water is sprayed so that the condenser is always wet and the water does not flow down below the condenser. Water can be saved.

[0054]

Since the present invention is configured as described above, it has the following effects.

Watering means for spraying water to the condenser, outdoor temperature detecting means for detecting the outside air temperature, watering amount calculating means for calculating the watering amount to the condenser based on the outside air temperature, and watering by the watering amount calculating means Water sprinkling control means for controlling the amount of water sprinkled by the water sprinkling means so that the amount of water is obtained.Based on the outside air temperature detected by the outside air temperature detecting means, a future value of the outside air temperature is predicted. The watering amount is calculated by the watering amount calculating means based on the water temperature, so that in addition to the effect of reducing the power consumption due to the lowering of the condensing temperature, water can be used without excess and deficiency with respect to the outside air temperature, and further, the response delay of the watering operation Can be compensated for.

Further, water sprinkling means for sprinkling water to the condenser, outside air temperature detecting means for detecting the outside air temperature, outside air humidity detecting means for detecting the outside air humidity, and the amount of water sprayed to the condenser based on the outside air temperature and the outside air humidity. And a watering control means for controlling the watering amount by the watering means so that the watering amount becomes the watering amount by the watering amount calculating means, and the watering amount is detected by the outside air temperature detecting means and the outdoor air humidity detecting means. A future value of the outside air temperature and the outside air humidity is predicted based on the outside air temperature and the outside air humidity, and a watering amount is calculated by the watering amount calculating means based on the predicted values of the outside air temperature and the outside air humidity. In addition to the effect of reducing the power consumption, water can be used without any excess or shortage with respect to the outside air temperature and the outside air humidity, and the response delay of the watering operation can be compensated.

Further, there is provided operating capacity control means for controlling the operating capacity of the compressor, and a future value of the operating capacity is predicted based on the operating capacity detected by the operating capacity control means. Since the watering amount is calculated by the watering amount calculating means based on the predicted value of the outside air temperature or the outside air humidity, in addition to the effect of reducing the power consumption by watering, water can be used for the operating frequency without excess or shortage, Further, it is possible to compensate for a response delay of the watering operation.

[0058] The apparatus further comprises a power consumption detecting means for detecting the power consumption of the refrigeration cycle device, and predicts a future value of the power consumption based on the power consumption detected by the power consumption detecting means. Based on the predicted value of the outside air temperature or the outside air humidity, the watering amount is calculated by the watering amount calculation means, so that in addition to the effect of reducing the power consumption by watering, water can be used for the power consumption without excess or shortage. In addition, the response delay of the watering operation can be compensated.

Further, a condensing temperature detecting means for detecting the condensing temperature of the refrigeration cycle device is provided, and a future value of the condensing temperature is predicted based on the condensing temperature detected by the condensing temperature detecting means, and the predicted value of the condensing temperature is calculated. Based on the predicted value of the outside air temperature or the outside air humidity, the watering amount is calculated by the watering amount calculation means, so that in addition to the effect of reducing the power consumption by watering, water can be used to the condensation temperature without excess or shortage. , Can further compensate the response delay of watering operation

Further, the apparatus is provided with a condensing pressure detecting means for detecting the condensing pressure of the refrigeration cycle device, and predicts a future value of the condensing pressure based on the condensing pressure detected by the condensing pressure detecting means, Based on the predicted value of the outside air temperature or the outside air humidity, the watering amount is calculated by the watering amount calculation means, in addition to the effect of reducing the power consumption by watering,
Water can be used for the condensation pressure without excess or shortage,
Further, it is possible to compensate for a response delay of the watering operation.

Further, an indoor temperature detecting means for detecting the dry bulb temperature of the indoor air to be cooled, an indoor humidity detecting means for detecting the humidity of the indoor air to be cooled, and an evaporating temperature detecting means for detecting the evaporating temperature of the evaporator. Means, watering means for watering the condenser, watering amount calculating means for calculating the watering amount to the condenser, and watering control for controlling the watering amount by the watering means such that the watering amount is calculated by the watering amount calculating means. Means for calculating the amount of water sprayed on the condenser based on the indoor temperature by the indoor temperature detecting means, the indoor humidity by the indoor humidity detecting means, and the evaporation temperature by the evaporating temperature detecting means. In addition to the effect of reducing the electric input, it is possible to control the indoor temperature and the indoor humidity, and it is possible to achieve both energy saving and improved comfort.

Further, there is provided an evaporator air volume control means for controlling the air volume of a blower for blowing air to the evaporator and / or a condenser air volume control means for controlling the air volume of the blower for blowing air to the condenser. The amount of water blown to the evaporator and / or the condenser is controlled by the evaporator air flow control means and / or the condenser air flow control means in accordance with the water spray amount calculated by the means. In addition to the effects, it is possible to control the indoor temperature and the indoor humidity in a wide temperature and humidity range, and it is possible to achieve both energy saving and improved comfort.

Water spraying means for spraying water to the condenser, water spraying control means for controlling the amount of water sprayed by the water spraying means, and first water for detecting water on the surface of the condenser, which is provided below the surface of the condenser. Detecting means, provided below the condenser, and provided with second moisture detecting means for detecting moisture flowing down from the condenser surface, and a state in which moisture is detected by the first moisture detecting means by the watering control means; In addition, since the amount of water sprayed by the water spraying means is controlled so that water is not detected by the second water detecting means, in addition to the effect of reducing the electric input by watering, water is constantly sprayed in a wet state of the condenser, and waste is generated. Water is not saved, so water is saved.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a refrigeration cycle apparatus according to Embodiment 1 of the present invention.

FIG. 2 is a diagram illustrating a relationship between an outside air temperature and power consumption depending on whether or not water is sprayed in the refrigeration cycle apparatus according to Embodiment 1 of the present invention.

FIG. 3 is a diagram illustrating a required watering amount that can be used effectively with respect to the outside air temperature in the refrigeration cycle apparatus according to Embodiment 1 of the present invention.

FIG. 4 is a diagram showing a prediction calculation of a future value of an outside air temperature in the refrigeration cycle apparatus according to Embodiment 1 of the present invention.

FIG. 5 is a flowchart showing water spouting amount control based on outside air temperature in the refrigeration cycle apparatus according to Embodiment 1 of the present invention.

FIG. 6 is a diagram illustrating a relationship between a compressor operating frequency and a required watering amount in a refrigeration cycle apparatus according to Embodiment 2 of the present invention.

FIG. 7 is a diagram showing a relationship between power consumption and a required watering amount in a refrigeration cycle apparatus according to Embodiment 2 of the present invention.

FIG. 8 is a diagram illustrating a relationship between a condensing temperature and a required watering amount in a refrigeration cycle apparatus according to Embodiment 2 of the present invention.

FIG. 9 is a diagram illustrating a relationship between a condensing pressure and a required watering amount in a refrigeration cycle apparatus according to Embodiment 2 of the present invention.

FIG. 10 is a diagram showing a relationship between outside air humidity, outside air temperature and a required watering amount in the refrigeration cycle apparatus according to Embodiment 2 of the present invention.

FIG. 11 is a flowchart showing water spouting amount control based on outside air temperature, power consumption, and outside air humidity in a refrigeration cycle apparatus according to Embodiment 2 of the present invention.

FIG. 12 is a diagram showing an evaporating temperature of an evaporator with respect to an operating frequency of a compressor in a refrigeration cycle apparatus according to Embodiment 3 of the present invention.

FIG. 13 is a diagram illustrating a sensible heat ratio with respect to an operating frequency of a compressor in a refrigeration cycle apparatus according to Embodiment 3 of the present invention.

FIG. 14 is a diagram showing a blowing temperature of an evaporator with respect to an operating frequency of a compressor in a refrigeration cycle apparatus according to Embodiment 3 of the present invention.

FIG. 15 is a diagram showing a relationship between an indoor air state, a target indoor air state, and a target evaporation temperature in a psychrometric diagram of the refrigeration cycle apparatus according to Embodiment 3 of the present invention.

FIG. 16 is a block diagram of watering amount control of room temperature and room humidity in a refrigeration cycle apparatus according to Embodiment 3 of the present invention.

FIG. 17 is a control flowchart in a refrigeration cycle apparatus according to Embodiment 4 of the present invention.

FIG. 18 is a configuration diagram of a watering unit and a condenser of a refrigeration cycle apparatus showing Embodiment 5 of the present invention.

FIG. 19 is a configuration diagram of a conventional refrigeration cycle device.

[Explanation of symbols]

1 watering unit, 2 outdoor unit, 3 indoor unit, 4
Indoor, 11 compressor, 12 condenser, 13 throttle mechanism, 14 evaporator, 15 four-way valve, 16 condenser blower, 17 evaporator blower, 18 controller,
21 spray nozzle, 22 flow control valve, 23
Strainer, 24 water inlets, 25 watering controller, 2
6 Watering amount calculation means, 27 Watering control means, 31
Indoor temperature detecting means, 32 Indoor humidity detecting means, 33
Evaporating temperature detecting means, 34 outside air temperature detecting means, 35
Outside air humidity detecting means, 36 condensation temperature detecting means, 37
Condensation pressure detecting means, 38 Power consumption detecting means, 4
0 first moisture sensor, 41 second moisture sensor.

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Takuya Kanba 2-3-2 Marunouchi, Chiyoda-ku, Tokyo F-term in Mitsubishi Electric Corporation (reference) 3L060 AA03 CC02 CC03 CC04 CC06 CC07 CC10 CC16 DD02 DD08 EE45

Claims (9)

[Claims] 1. A refrigeration cycle apparatus having a refrigerant circuit having a compressor, a condenser, an evaporator, and an expansion means, wherein: a water spray means for spraying water to the condenser; an outside air temperature detection means for detecting an outside air temperature; Watering amount calculating means for calculating the watering amount to the condenser based on the temperature, and watering control means for controlling the watering amount by the watering means so that the watering amount by the watering amount calculating means, A refrigeration cycle wherein a future value of the outside air temperature is predicted based on the outside air temperature detected by the outside air temperature detecting means, and the watering amount is calculated by the watering amount calculating means based on the predicted value of the outside air temperature. apparatus. 2. A refrigeration cycle having a refrigerant circuit having a compressor, a condenser, an evaporator, and an expansion means, wherein: a water sprinkling means for spraying water to the condenser; an outside air temperature detecting means for detecting an outside air temperature; Outside water humidity detecting means for detecting the amount of water sprayed on the condenser based on the outside air temperature and the outside air humidity; and Water spray control means for controlling the amount of water sprayed, based on the outside air temperature and the outside air humidity detected by the outside air temperature detection means and the outside air humidity detection means, to predict future values of the outside air temperature and the outside air humidity, A refrigeration cycle apparatus wherein a watering amount is calculated by the watering amount calculating means based on predicted values of temperature and outside air humidity. 3. An operating capacity control means for controlling an operating capacity of the compressor, wherein a future value of the operating capacity is predicted based on the operating capacity detected by the operating capacity control means, and the operating capacity is predicted. 3. The refrigeration cycle apparatus according to claim 1, wherein the watering amount is calculated by the watering amount calculation unit based on the value and the predicted value of the outside air temperature or the outside air humidity. 4. 4. A power consumption detecting means for detecting power consumption of the refrigeration cycle device, wherein a future value of power consumption is predicted based on the power consumption detected by the power consumption detecting means, and the power consumption is predicted. 3. The refrigeration cycle apparatus according to claim 1, wherein the watering amount is calculated by the watering amount calculation unit based on the value and the predicted value of the outside air temperature or the outside air humidity. 4. 5. A condensing temperature detecting means for detecting a condensing temperature of a refrigeration cycle device, wherein a future value of the condensing temperature is predicted based on the condensing temperature detected by the condensing temperature detecting means, and the condensing temperature is predicted. 3. The refrigeration cycle apparatus according to claim 1, wherein the watering amount is calculated by the watering amount calculation unit based on the value and the predicted value of the outside air temperature or the outside air humidity. 4. 6. A condensing pressure detecting means for detecting a condensing pressure of a refrigeration cycle device, wherein a future value of the condensing pressure is predicted based on the condensing pressure detected by the condensing pressure detecting means, and a predicted value of the condensing pressure is calculated. 3. The refrigeration cycle apparatus according to claim 1, wherein the watering amount is calculated by the watering amount calculating means based on the predicted value of the outside air temperature or the outside air humidity. 7. A refrigeration cycle apparatus having a refrigerant circuit having a compressor, a condenser, an evaporator, and expansion means, wherein: indoor temperature detection means for detecting a dry bulb temperature of indoor air to be cooled; Indoor humidity detecting means for detecting the humidity of the air; evaporating temperature detecting means for detecting the evaporating temperature of the evaporator; watering means for watering the condenser; and watering amount calculation for calculating the watering amount to the condenser. Means, and watering control means for controlling the watering amount by the watering means so that the watering amount is obtained by the watering amount calculating means, wherein the watering amount calculating means comprises: an indoor temperature detected by the indoor temperature detecting means; A refrigeration cycle apparatus that calculates an amount of water sprayed to the condenser based on indoor humidity by a humidity detection unit and an evaporation temperature by the evaporation temperature detection unit. 8. An evaporator air volume control means for controlling an air volume of a blower for blowing air to the evaporator and / or a condenser air volume control means for controlling an air volume of a blower air blown to the condenser. The amount of air blown to the evaporator and / or the condenser is controlled by the evaporator air volume control means and / or the condenser air volume control means in accordance with the water volume calculated by the water volume calculation means. The refrigeration cycle apparatus according to claim 7. 9. A refrigeration cycle apparatus having a refrigerant circuit having a compressor, a condenser, an evaporator, and an expansion means. A watering means for watering the condenser, and a watering control means for controlling an amount of watering by the watering means. First moisture detecting means provided below the surface of the condenser and detecting moisture on the surface of the condenser; and second means provided below the condenser and detecting moisture flowing down from the surface of the condenser. A water detecting means, wherein the water spraying control means sprays water by the water spraying means such that water is detected by the first water detecting means and water is not detected by the second water detecting means. A refrigeration cycle device characterized by controlling the amount of water.