JPH01277181A - Space cooling hot water supply device, space heating hot water supply device and cooling/heating hot water supply device - Google Patents

Abstract

PURPOSE:To prevent the generation of flushing gas in refrigerant, by installing a bypass pipe which bypasses a hot water supply heat exchanger and a change over mechanism which changes over the flow of refrigerant to the piping which forms a refrigerant circuit. CONSTITUTION:A refrigerant pipeline 5 which forms a refrigerant circuit is provided with a bypass pipe 8 which bypasses a hot water supply heat exchanger 7 and a change over mechanism 9 which changes over the flow of refrigerant where a change over valve is used as the change over mechanism 9. When the change over mechanism 9 is manipulated, the refrigerant which flows from a condenser 2 is changed over into a refrigerant flowing through a hot water supply heat exchanger 7 and a refrigerant flowing out through the heat exchanger. Therefore, during cooling operation and heating operation, when the refrigerant is heat- exchanged and condensed with a heat exchanger which serves as a condenser, the refrigerant is reduced to a low temperature. When the temperature of this refrigerant drops below the temperature of make-up water which is to be heat-exchanged with the hot water supply heat exchanger, the refrigerant is fed to a throttle device, bypassing the hot water supply heat exchanger, thereby preventing the heat exchange between the refrigerant and the make-up water, which makes it possible to prevent the generation of flushing gas in the refrigerant.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a cooling hot water supply AM, a heating hot water supply device, and a cold II water spinning device using a heat pump.

[Conventional technology]

Conventionally, a heat pump refrigerant circuit is used in which a heat exchanger serving as a compressor 2 condenser, a heat exchanger serving as an evaporator, and a throttle device are connected in series through refrigerant piping, and the heat exchanger serving as a condenser is used as a heat exchanger on the user side. An 11 room system that has been used as a weapon, a cooling system that uses the heat exchanger that serves as the evaporator as the heat exchanger on the user side, and a cooling unit that can be used for both cooling and heating by cutting off the path of the refrigerant! chamber devices have been developed and are in use. In the above-mentioned heating 'all', cooling equipment, and cooling equipment using heat pumps, the refrigerant is condensed through a heat exchanger (which serves as a condenser) and is then sent to the throttle Hl where it is depressurized. However, the refrigerant that has condensed through the heat exchanger that serves as the condenser still has sufficient heat.Recently, by further reducing the heat of the refrigerant in this position, heating capacity and cooling capacity can be increased. It was found that the heat exchanger can be connected to this position, and the refrigerant that has passed through the heat exchanger 1 weapon, which serves as a condenser, is heat exchanged with water, increasing the heating capacity and cooling capacity, as well as hot water supply. Heating and hot water supply systems, cooling and cooling systems, and cooling and heating water supply systems have been developed.

[Problems to be Solved by the Invention] The device that exchanges the heat of the refrigerant that has passed through the heat exchanger serving as the condenser with water has shown a dramatic increase in heating capacity and cooling/heating capacity. Although it showed excellent effects such as being able to heat hot water and being economical, in order to obtain such effects,
It is necessary that the temperature of the above refrigerant is always higher than 1 degree of water. For example, when the temperature of the chamber is low at the start of the mL chamber operation, the temperature of the refrigerant heat exchanged with the weapon (heat exchanger that becomes the condenser) If the temperature is low and the temperature is lower than the temperature of the make-up water that is trying to exchange heat with this refrigerant, the above! c.
! The condensed and liquefied refrigerant is heated by the temperature of the water and rises, generating flash gas.As a result, the refrigerant depth decreases and the heating capacity decreases, and the condensation pressure increases, increasing the consumption of the compressor. As the power increases, the pressure! This will put a heavy load on the machine and cause it to malfunction.

This invention aims to solve the above problems!
8. I! l device, I! The company provides spinning machines, easy equipment, and cooling/heating hot water supply equipment.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides compressors 1 and 1i.
A heat exchanger for hot water supply is connected between the condenser and the throttle device to a heat pump refrigerant circuit consisting of a heat exchanger serving as a condenser, a heat exchanger serving as an evaporator, and a throttling device, and a hot water supply heat exchanger is connected between the condenser and the throttling device. In an air conditioning/heating device that heats with an exchanger, a bypass pipe that bypasses a heat exchanger for hot water supply and a switching mechanism that switches the flow of the refrigerant are provided on the piping constituting the refrigerant circuit. In addition, if the compressor, a heat exchanger serving as a condenser, a heat exchanger serving as an evaporator, and a throttling device are included, a heat exchanger for hot water supply is connected between the condenser and the throttling device to the refrigerant circuit. , a cold F that heats make-up water with a hot water heat exchanger! ! In the hot water supply system, a bypass pipe that bypasses the hot water supply heat exchanger and a switching mechanism that switches the flow of makeup water are provided on the water connection pipe that supplies makeup water.

Further, a heat exchanger for hot water supply is connected between the condenser and the throttle device to a heat pump refrigerant circuit consisting of a pressure m*, a heat exchanger serving as a condenser, a heat exchanger serving as an evaporator, and a throttle device,
Make-up water is now heated using a hot water heat exchanger)! Tufts!
8. In the cooling device, a bypass pipe for bypassing the hot water supply heat exchanger and a switching mechanism for controlling the flow of the refrigerant were provided on the piping constituting the refrigerant circuit.

In addition, compressor 2. A heat exchanger for hot water supply is connected between the 3X condenser and the throttling device to a heat pump refrigerant circuit consisting of a heat exchanger as an IJ condenser, a heat exchanger as an evaporator, and a piping bag 1, and makeup water is connected. In the IfI hot water system that heats with a hot water heat exchanger IA device, a bypass pipe that bypasses the hot water heat exchanger and an M! +
! lSwitching lI to switch the flow of water! A bridge was built.

In addition, the compressor, refrigerant switching device 1.11 The indoor heat exchanger, which functions as a condenser during cooling and the evaporator during cooling, the outdoor heat exchanger, which functions as a condenser during cooling and an evaporator during heating, and a throttling device. A heat exchanger for hot water supply is connected between the condenser and the throttling device to the heat pump refrigerant circuit, and makeup water is supplied! 8. A refrigerant switching device for heating with a cooling heat exchanger (here, a bypass pipe that bypasses the hot water heat exchanger and a switching IQ device that switches the flow of the refrigerant are installed on the piping that constitutes the refrigerant circuit). I set up the side.

In addition, there is a compressor, a refrigerant cut-off device 1a, an indoor heat exchanger that serves as a condenser for heating and an evaporator for cooling, and an outdoor heat exchanger that serves as a condenser for cooling and an evaporator for room II. , a heat exchanger for hot water supply is connected between the condenser and the throttle Hl to a heat pump refrigerant circuit consisting of a throttle device,
In a refrigerant switching device that heats makeup water with a heat exchanger for hot water supply, a bypass pipe that bypasses the heat exchanger for hot water supply and a switching mechanism that switches the flow of makeup water are installed on the water supply piping that supplies hot water. .

[Function] According to the present invention, a bypass pipe is provided on the piping constituting the heat pump refrigerant circuit to bypass the hot water supply heat exchanger connected between the condenser and the throttling device, and the flow of the refrigerant is cut off. Since we have a negative switching mechanism, you can switch! ! ! Refrigerant flows from the IJ condenser by operating the bridge! It is possible to switch between the flow passing through the 8J heat exchanger and the flow not passing through it.

Further, a bypass pipe for bypassing the hot water supply heat exchanger is provided on the water supply pipe that connects to the hot water supply heat exchanger of the heat pump refrigerant circuit and supplies makeup water, and a switching mechanism for switching the flow of the makeup water is provided. Therefore, by operating the switching mechanism, the make-up water flowing through the water supply piping can be divided into a flow that passes through the hot water supply heat exchanger and a flow that does not pass through the hot water supply heat exchanger.

[Embodiments] The present invention will now be described in detail based on embodiments shown in the drawings.

FIG. 1, Atsushi 2I21, is a circuit explanatory diagram of the cooling water heater according to the present invention, in which the compressor 1. Condenser 2. Squeezing device 3. A heat pump refrigerant circuit 6 is constituted by a circuit in which the evaporator 4 is connected in series through a refrigerant pipe 5, and a hot water supply heat exchanger 7 is connected between the condenser 2 and the throttle device 3 on this refrigerant arrangement f5. ing. The evaporator 4 is installed indoors.
It serves as a heat exchanger on the user side.

The embodiment shown in FIG.
A switching mechanism 9 is provided for switching the flow of the refrigerant and the refrigerant flow. In the embodiment, a switching valve is used as the switching mechanism 9. By operating this switching mechanism 9, the refrigerant flowing from the condenser 2 is switched to hot water supply. The heat exchanger 7 can be switched to a moat that does not pass the T flow.

In the embodiment shown in FIG. 2, the hot water supply heat exchanger is connected to the hot water supply heat exchanger 7 provided on the refrigerant pipe 5 constituting the refrigerant circuit and is connected to the hot water supply heat exchanger 7 for supplying supplementary water. Bypass pipe 11 that bypasses 7 and switch P that switches the flow of makeup water
A mechanism 12 is provided. In the embodiment, a disconnection valve is used as the switching mechanism 12. By operating this switching mechanism 12, the makeup water flowing through the water supply pipe 10 can be switched between dripping that passes through the V3 Yukawa heat exchanger 7 and leakage that does not pass.

In the embodiment shown in FIG. 3, a heat exchanger 13 is connected to the discharge side of the pressure ! The spinning water distribution W10 is connected, and the make-up water exchanged and heated by the hot water supply heat exchanger 7 is further heated by the heat exchanger 13.Although not shown, it is shown in Figure M2. A heat exchanger may be connected to the refrigerant pipe 5 constituting the refrigerant circuit of the embodiment on the discharge side of the compressor 1, and the water supply pipe 10 may be connected to this heat exchanger.

Figures 4 and 5 are circuit explanatory diagrams of a heating device according to another invention, compressor 1, condenser 2, $5!
3. A heat pump refrigerant circuit 6 is constituted by a circuit in which an evaporator 4 is connected in series through a refrigerant pipe 5, and an easy-to-use mature exchanger 7 is connected between the condenser 2 and the expansion device 3 on the refrigerant pipe 5. It is connected. Mo before! The condenser 2 is located indoors and serves as a user-side heat exchanger.

In the embodiment shown in Fig. M4, a bypass pipe 8 for bypassing the hot water supply river exchanger and a switch 111M9 for controlling the flow of the refrigerant are provided on the refrigerant pipe 5 constituting the refrigerant circuit. In the embodiment, a switching valve is used as the switching mechanism 9. By operating this switching mechanism 9, the refrigerant flowing from the condenser 2! The flow that passes through the heat exchanger 7 and the flow that does not pass through the heat exchanger 7 can be switched.

The embodiment shown in Figure M5 has the refrigerant port 28 shown in Figure M4 above.
On the refrigerant pipe 5 constituting the hot water supply heat exchanger 7 (on the water supply pipe 10 that connects to the hot water supply heat exchanger 7 and supplies makeup water, there is a bypass pipe 11 that bypasses the hot water supply heat exchanger 7).
A switching mechanism 12 for switching the flow of water supply is provided. In the embodiment, a switching valve is used as the switching +A mechanism 12. By operating this switching device 1j112, it is possible to switch the supplementary water flowing through the water supply pipe 10 into a flow that passes through the hot water supply heat exchanger 7 and a flow that does not pass therethrough.

In the embodiment shown in Fig. M6, a heat exchanger 13 is connected to the discharge side of the compressor 1 to the refrigerant pipe 5 constituting the refrigerant circuit of the embodiment shown in Fig. M4, and the water supply distribution 1W10 is connected to the heat exchanger 13.
is connected, and the supplementary water heated by heat exchange with the hot water supply heat exchanger 7 is further heated with the heat exchanger 13. Also, although not shown! On the refrigerant pipe 5 constituting the refrigerant circuit of the embodiment shown in 5121, a heat exchanger 1 inner device is connected to the discharge side of the compression III 1, and a water supply distribution v110 is connected to this heat exchanger.
may be connected.

Figure 7! Figure 8 shows a cold 111J hot water system according to this invention.
It is a circuit explanatory diagram of compressor 1. Refrigerant switching device 14.1
% Indoor heat exchanger that serves as a condenser for the room and as an evaporator for cooling 15. A heat pump refrigerant circuit 6 is constituted by a circuit in which an outdoor heat exchanger 16, which functions as a condenser during cooling and functions as an evaporator during standby, and a throttle device] 3 are connected in series through refrigerant piping 5, and this refrigerant A hot water supply heat exchanger 7 is connected on the pipe 5 between the condenser and the restrictor N3.

! The embodiment shown in FIG. 7 has a circuit configuration in which the hot water supply heat exchanger 7 is always connected on the refrigerant pipe 5 between the condenser and the throttle device i3, regardless of whether the operation is during standby cooling or cooling. It has become. For this purpose, two throttle devices 13a, 3b are connected in series between the indoor heat exchanger 15 and the outdoor heat exchanger 16, and each throttle device 3a, 3b is provided with a check valve 17a.

Bypass pipes +8a and +8b with 17b are provided, and a hot water heat exchanger 7 is connected between the two expansion devices 13a and 3b. And l! During the room operation, the refrigerant flowing from the indoor heat exchanger 15, which serves as a condenser, passes through the bypass pipe 18a that does not pass through the throttling device 3a, passes through the hot water supply heat exchanger 7, and passes through the throttling device +13b to be depressurized. During cooling operation, the refrigerant flowing from the outdoor heat exchanger 16, which serves as a condenser, is squeezed into a piping bag! 31), but instead passes through the bypass 1118b, passes through the hot water supply heat exchanger 7, and passes through the throttle device 3a to be depressurized. On the refrigerant pipe 5 that has been IM-formed as described above (
A bypass pipe 8 bypassing the hot water supply heat exchanger 7 and a switch 81 bridge 9 are provided to cut off the flow of refrigerant. In the embodiment, a switching valve is used as the cut-off (A mechanism 9).By operating this cut-off (A) mechanism 9, the refrigerant flowing from the condenser can be made to flow through the hot water supply heat exchanger 7 or not. can be switched to

The embodiment shown in FIG. 8 has the same basic circuit as the refrigerant circuit shown in FIG. In order to have a circuit configuration in which the manifold check valve 19 is used, the indoor side The refrigerant flowing from the heat exchanger 15 and the refrigerant flowing from the outdoor heat exchanger 16 are configured so that they always pass through the hot water supply heat exchanger 7 through the manifold check valve 19 and then through the throttling device 3. A water supply pipe 1 connects to the hot water supply heat exchanger 7 provided on the refrigerant pipe 5 configured as described above and supplies make-up water.
0, a bypass pipe 11 that bypasses the hot water supply heat exchanger 7 and a switching machine IM12 that switches the flow of makeup water are provided. In the embodiment, a switching valve is used as the turning mechanism 12. By operating this switching mechanism 12, the make-up water flowing through the water supply pipe 10 can be switched between a flow that passes through the hot water supply heat exchanger 7 and a flow that does not pass through the hot water supply heat exchanger 7.

! In the embodiment shown in FIG. 9, a heat exchanger 13 is connected to the discharge side of the compressor 1 on the refrigerant pipe 5 constituting the refrigerant circuit of the embodiment shown in FIG. Ar' [1
0 is connected, and the make-up water heated by heat exchange with the hot water supply heat exchanger itA 7 is further heated with the heat exchanger 41!13.

Although not shown, a heat exchanger may be connected to the discharge side of the compressor 1 on the refrigerant pipe 5 constituting the refrigerant circuit of the embodiment shown in FIG. 8, and the water supply pipe 10 may be connected to this heat exchanger. good.

In the figure, 20 is a hot water storage tank.

[Effects of the Invention] As described above, according to the air-conditioning hot water supply device according to the present invention, 1.11 the air-cooling device and the cold water heating device, there is a A bypass pipe is provided to bypass the connected hot water heat exchanger, and a switching mechanism is provided to switch the flow of the refrigerant. The refrigerant flowing from one unit can be switched between passing through the hot water heat exchanger and not passing it through the hot water supply heat exchanger.

Also, on the water supply piping that connects to the hot water heat exchanger of the heat pump refrigerant circuit and supplies makeup water! 8. A bypass pipe was installed to bypass the I heat exchanger, and a Kiri 1 Otsugi Bridge was installed to control the flow of make-up water, so it was time to switch! By operating the AI bridge, the make-up water flowing through the water supply pipes can be spun and not connected to the flow through the easy-to-use heat exchanger; it can be switched to farming.

Therefore, during cooling operation, if the temperature of the refrigerant condensed through heat exchange in the heat exchanger serving as the condenser is lower than the temperature of the make-up water with which heat is exchanged in the hot water supply heat exchanger. If the temperature becomes low, bypass the hot water heat exchanger and send the refrigerant to the throttling system 3, or supply makeup water! 8 By bypassing the JI heat exchanger and preventing heat exchange between the refrigerant and make-up water (rubbing), generation of flash gas can be prevented. As a result, reduction in heating and cooling capacity is prevented,
Furthermore, since the load on the compressor due to the generation of flash gas is eliminated, the service life of the compressor is increased and an increase in power consumption can be prevented.

[Brief explanation of the drawing]

Figures jg1 to 3I21 show an example of the implementation of the cooling water heater according to the present invention! 8 explanatory drawings, 4121st to 6th
1 is an explanatory circuit diagram illustrating an example of the implementation of the heating/heating device according to the present invention, and FIGS. 8
1 is a circuit explanatory diagram showing an example of implementation of one device; FIG. 1... Compressor 2... Condenser 3.3a, 3b... Throttle @ 4... Evaporator 5...
・Refrigerant piping 6...Heat pump refrigerant circuit 7...Hot water supply heat exchanger 8...Bypass pipe 9...Switching III
Bridge 10...Water supply piping 11...Bypass 1! 12
...Indoor side 1m unit 16...Outdoor heat exchanger

Claims (6)

[Claims] (1) A heat exchanger for hot water supply is connected between the condenser and the throttle device to a heat pump refrigerant circuit consisting of a compressor, a heat exchanger serving as a condenser, a heat exchanger serving as an evaporator, and a throttle device,
In the cooling water supply system in which make-up water is heated by a hot water supply heat exchanger, a bypass pipe that bypasses the hot water supply heat exchanger and a switching mechanism that switches the flow of the refrigerant are provided on the piping constituting the refrigerant circuit. A cooling water heater. (2) a heat pump refrigerant circuit consisting of a compressor, a heat exchanger serving as a condenser, a heat exchanger serving as an evaporator, and a throttling device; connecting a hot water supply heat exchanger between the condenser and the throttling device;
In an air-conditioning hot water supply system in which make-up water is heated by a heat exchanger for hot water supply, a bypass pipe that bypasses the heat exchanger for hot water supply and a switching mechanism that switches the flow of make-up water are provided on the water supply piping that supplies the make-up water. A cooling water heater. (3) A heat exchanger for hot water supply is connected between the condenser and the throttle device to a heat pump refrigerant circuit consisting of a compressor, a heat exchanger serving as a condenser, a heat exchanger serving as an evaporator, and a throttle device,
In a heating and hot water supply system in which make-up water is heated by a hot water heat exchanger, a bypass pipe that bypasses the hot water heat exchanger and a switching mechanism that switches the flow of the refrigerant are provided on the piping constituting the refrigerant circuit. A heating and water heater. (4) A heat exchanger for hot water supply is connected between the condenser and the throttle device to a heat pump refrigerant circuit consisting of a compressor, a heat exchanger serving as a condenser, a heat exchanger serving as an evaporator, and a throttle device,
In a heating water heater that heats make-up water with a heat exchanger for hot water supply, a bypass pipe that bypasses the heat exchanger for hot water supply and a switching mechanism that switches the flow of make-up water are installed on the water supply pipe that supplies the make-up water. A heating and hot water supply system. (5) Consists of a compressor, a refrigerant switching device, an indoor heat exchanger that functions as a condenser during heating and an evaporator during cooling, an outdoor heat exchanger that functions as a condenser during cooling and an evaporator during heating, and a throttling device. In a cooling/heating water supply device in which a heat exchanger for hot water supply is connected to a heat pump refrigerant circuit between the condenser and the expansion device, and make-up water is heated by the heat exchanger for hot water supply, piping constituting the refrigerant circuit. A heating/cooling water heater that is provided with a bypass pipe that bypasses a heat exchanger for hot water supply and a switching mechanism that switches the flow of refrigerant. (6) Consists of a compressor, a refrigerant switching device, an indoor heat exchanger that functions as a condenser during heating and an evaporator during cooling, an outdoor heat exchanger that functions as a condenser during cooling and an evaporator during heating, and a throttling device. A water supply pipe for supplying make-up water in a cooling/heating water supply system in which a heat exchanger for hot water supply is connected to the heat pump refrigerant circuit between the condenser and the throttling mechanism, and make-up water is heated by the heat exchanger for hot water supply. A heating/cooling water heater that is provided with a bypass pipe that bypasses a heat exchanger for hot water supply and a switching mechanism that switches the flow of make-up water.