JPS5837462A - Heat recovery type air-cooled heat pump air conditioner - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] This Ml! is the percentage of waste heat from children who require winter cooling when cooling and heating loads coexist throughout the year.
This is a four-part heat pump air conditioner that can be used in other rooms that require heating at the same time.

Conventionally, this type of air conditioner has a configuration that includes an air conditioner that allows cooling operation throughout the year, and a 5-heat pump type air conditioner that performs summer cooling and winter heating.

(1) The air conditioner above can operate normally for one year even in winter! In order to make this possible, a high-pressure pressure control device is required, which is expensive and also causes trouble.

(2)) In addition, in the L-ship pump type air conditioner, cold draft occurs due to winter defrosting operation, causing discomfort.

(3) In order to manage the coexisting cooling load and warm N* load, the air conditioner must be operated frequently, resulting in an increase in running cost.

There were drawbacks such as.

This invention was made to resolve these drawbacks, and is based on a system in which one or more indoor units for heat recovery are connected to a set of indoor units and outdoor units through refrigerant piping.

Cooling and heating can be performed at the same time by using the exhaust heat generated by the cooling operation of one or more heat recovery nursery equipment F for winter heating, and one indoor equipment and one or more indoor equipment. This feature improves the workability of the refrigerant piping that connects the indoor units for heat recovery and reduces the construction cost. This invention will be described in detail below based on drawings.

FIGS. 1 to #E3 are configuration diagrams showing an embodiment of the present invention, in which FIG. 1 is a diagram showing a state in which exhaust heat generated by cooling an indoor unit is discharged from an outdoor unit, and FIG. ! ! ! 1 is a diagram showing a state in which the outdoor unit is in evaporation mode and the indoor unit is in heating operation using outside air as a heat source. Figure 3 is a diagram showing a state in which the indoor unit is in heating operation using outside air as a heat source. Figure 3 is a diagram showing a state in which the indoor unit is in heating operation using the outside air as a heat source. FIG. 3 is a diagram showing a state in which the heating operation is performed. In these figures, 1 is an indoor unit), b is an unexpected unit, and 0 is an indoor unit for heat recovery.

In the indoor unit, 1 is the compressor, 2 is the four-way switching valve, 3 is the heat exchanger, 4 is the expansion valve, S is the check valve, 6 is the dryer filter, 1 is the liquid receiver, and 8 is the sataseki emulator. , ■ is 77 inches, 10 is a stop valve, 11.12. Is is a solenoid valve, 14. IS is a check valve. 1@, 11' are refrigerant pipes that connect the indoor unit a and the outdoor unit b.

11) bk, 1F is an expansion valve, 1$ is a check valve, II is a heat exchanger, and 20 is a fan.

Heat ■ Acquisition interior work 1) In C, 2 is a millimeter chag, 22 is a heat exchanger, and 23 is a fan. 24.
24' is the above-mentioned indoor heat recovery indoor heat recovery facility)C
This is a refrigerant pipe that connects the

Next, the operation will be explained.

During the cooling operation, as shown in FIG. Stop valve 10&
- The refrigerant passes through the refrigerant pipe 11 and flows into the heat exchanger 11 provided with the outside unit bk, where it is cooled and condensed by the outdoor air blown out by the 77n 2. The condensed high-pressure liquid refrigerant passes through the check valve 1llt, the piping 16', the open solenoid valve 11 of the indoor unit 1, the stop valve 10, the liquid receiver Tkfi, the dryer phytaro, and the expansion valve 4. It expands, is heated by indoor air blown by fan S in heat exchanger 3, and evaporates. The evaporated low-pressure refrigerant gas is transferred to the four-way switching valve 1. [Return to compressor 1]゛If you turn on heating operation KII,
As shown in FIG. 2, the high-pressure refrigerant gas discharged from the compressor 1 flows into the heat exchanger 8 via the four-way switching valve 2, where it is cooled and condensed by indoor air ventilated by the 77-inch IK. The condensed high-pressure liquid refrigerant flows into the liquid receiver 1 through the check valve S, passes through the solenoid valve 11, and expands at the expansion valve 11 installed in the [refrigerated pipe IRV connection 9 outdoor unit] b, thereby exchanging heat! i1!11cm enters, exchanges heat with outdoor air and evaporates. The evaporated low-pressure refrigerant gas passes through the refrigerant pipe 16, passes through the four-way selector valve 1 in the indoor compressor 1, and passes through the f comb 1 accumulator St.
Return to

At the time of a tactical battle, as shown in Figure 3.

The high-pressure refrigerant gas discharged from the compressor 1 flows into the heat exchanger IIS via the four-way switching valve 2, and is cooled and condensed by indoor air ventilated by the fan I. This allows indoor enin)a
The condensed high-pressure liquid refrigerant enters through the check valve 5, and the solenoid valve 12.1S is connected to the heat recovery chamber - 2-item). It expands at 21, passes through a heat exchanger 22, is heated by indoor air ventilated by a fan 23, and emits S.

As a result, the indoor unit for heat recovery) performs cooling, and the evaporated low-pressure refrigerant gas passes through the refrigerant pipe 24 to the indoor unit.
It returns to the compressor 1 through the check valve 14.1St' provided in the 4-way switching valves and the Sakushi Akiemulator S.

Number 411 shows a fake embodiment of this invention.

The solenoid valves 12, 13 and check valves 14jlI installed in the indoor ennit field in Fig. 3 are respectively installed in the indoor ennin) C for heat recovery, and when a large number of indoor ennin units C for heat recovery are installed or Applicable when the distance is long. The other configurations are the same as in FIG. 3. FIG. 4 corresponds to FIG. 3 of the above-mentioned embodiment, and shows a state in which the indoor unit for heat recovery (c) is in cooling operation and at the same time, the indoor unit is in heating operation using its exhaust heat as a heat source. , the operation is the same as for the irises 1 diagram.

Incidentally, in each of the above embodiments, when the indoor unit for heat recovery (C) was operated, the outdoor unit (B) was in an inoperable state.

In addition, although the indoor heat recovery unit C is connected to the indoor units), it can also be connected to the heat recovery indoor units) C and outdoor units) b, depending on the case.

As explained above, this invention has the following advantages because it is constructed by combining a required number of indoor units for heat recovery with a pair of indoor/outdoor units.

(1) Throughout the year [When cooling loads coexist, it is possible to perform cooling or heating at the same time by operating a combination of 1 liter of indoor equipment for heat recovery and 1 liter of indoor equipment, significantly reducing running costs. is obtained. In addition, the defrost operation that defrosts the outdoor unit, which occurs at the cold point in the conventional method, is no longer required, resulting in a cold trough).
The discomfort caused by this can be alleviated.

B) By adding solenoid valves, check valves, and indoor heat recovery equipment to conventional air conditioners, it becomes possible to configure heat-containing air conditioners, which can be used in communication rooms and computer rooms that generate a high amount of heat. This is extremely effective as an air conditioning system when cooling and heating loads coexist in the winter, such as in buildings with

False) When a large number of indoor axes F are installed, or when the distance between them is long, solenoid valves,
If the check valve is installed inside the indoor unit for heat recovery, the refrigerant piping construction cost will be lower. Additionally, the number of piping connections is reduced, which has the effect of reducing problems such as gas leaks.

Therefore, it is very effective in cases where cooling loads and heating loads coexist in the winter, such as in buildings with communication equipment rooms or computer rooms that generate high heat.

[Brief explanation of drawings]

FIGS. 1 to 3 are configuration diagrams showing one embodiment of this invention,
Iris III is a diagram showing a state in which waste heat generated by rotating the indoor unit for cooling is discharged from the outdoor unit F, and 2nd rlA is the outdoor unit! Figure 3 shows a state in which the air conditioner acts as an evaporator and the outside air is used as a heat source for heating and transporting indoor units. Fig. 4 is a diagram showing a state in which the unit is in heating operation, and Fig. 4 is a configuration diagram showing another embodiment of the present invention, and is shown in the same state as Fig. 3. , b is an outdoor unit. C is an indoor unit for heat fighting, 1 is a compressor, 2 is a four-way switching valve, S, 11.22 is a heat exchanger, 4 and 17 are expansion valves, S
, 14. Is, 18 is a check valve, I is a dryer filter,
1 is the liquid receiver, Hatake is Satashi Wataru 7 Kiemreta, I, 20
．． 21 is a fan, 11 is a stop valve, 11. IL Is is a solenoid valve, IL1@', 24.24' is a refrigerant pipe, 21
is a cavillary chain. Rod 1! ! i'I Figure 2 Figure 3 Figure 1

Claims (1)

[Claims] (1) An indoor unit with a built-in compressor and a one-way switching valve that switches between cooling and heating;
In an air-cooled heat pump air conditioner consisting of an external air conditioner F connected to a heat exchanger and a fan via refrigerant piping, the required number of indoor air conditioners equipped with a heat exchanger and fan are released during heat recovery. A heat recovery type air cooling pump air conditioner characterized by being connected to the indoor air conditioner via a solenoid valve. The heat recovery type air-cooled heat pump air conditioner according to claim (1), wherein the solenoid valve is provided in a heat exchange indoor unit.