KR100666057B1 - A system for warm or cool water-production of heat-pump type - Google Patents

Abstract

The present invention can be installed more easily by installing the heat exchanger that plays a condensation role together with all the other components in a single case without installing outdoors, and the heat exchanger that plays a condensation role Cooling water or hot water generation system using a heat pump that condenses the high-temperature, high-pressure gas refrigerant through cold water, generates and supplies only cooling water, and additionally generates and supplies cooling water and hot water simultaneously. will be.

Compressor, cold water, hot water, condenser

Description

Cooling water or hot water generation system using heat pump {A system for warm or cool water-production of heat-pump type}

1 is a cooling water or hot water generation system using a heat pump.

<Description of the symbols for the main parts of the drawings>

1: compressor

4,3: 1st, 2nd condenser

15,18: first and second evaporator

14,17: edifice

40: cold water line

45: circulation line

The present invention relates to a cooling water or hot water generation system using a heat pump, and more particularly, it is possible to install the heat exchanger, which plays a condensation role, together with all other components in a single case without installing the condenser. It can be installed more easily, condensation of high-temperature high-pressure gas refrigerant passing through the heat exchanger, which plays a condensation role, using cold water, and can generate and supply only cooling water exclusively. It relates to a cooling water or hot water generating system using a heat pump to generate and supply.

As an example of a conventional heat pump type hot and cold water supply apparatus, there is a patent application No. 2002-006429 which was selected by the applicant on February 5, 2002.

The technique comprises a compressor for compressing the supplied refrigerant into a gas refrigerant, a first condenser for liquefying the high temperature and high pressure gas refrigerant discharged from the compressor into a medium temperature high pressure liquid refrigerant by external air blown by a blower fan, and the condenser. An expansion valve for reducing the liquefied liquid refrigerant discharged from the liquid to a low temperature and low pressure into a liquid phase, and the liquid refrigerant decompressed at a low temperature and low pressure through the expansion valve is evaporated by taking heat from the fluid supplied and changing its phase to a gas state. It consists of an evaporator to form a basic refrigeration cycle.

Next, a second condenser is installed on the discharge path of the compressor to condense the high-temperature, high-pressure gas gas discharged from the compressor by the supplied fluid, and to supply the warm fluid, and the second condenser is provided on the second condenser side. A first supply pump is installed to supply a fluid for condensation, and the second evaporator is provided with a second supply pump for supplying a fluid to be evaporated to the evaporator.

The second condenser is composed of first, second and third heat exchangers and configured to supply low temperature, medium temperature, and high temperature fluids.

An oil separator for separating oil contained in the refrigerant discharged from the compressor is installed on the discharge path of the compressor, and the refrigerant is introduced into the compressor by maintaining a temperature and pressure of the refrigerant flowing into the compressor at a predetermined value. A liquid refrigerant heat exchanger is installed to reduce the shock applied to the compressor due to the inflow of the supercooled refrigerant.

In addition, a dryer for removing impurities and moisture contained in the refrigerant discharged from the second condenser is installed on the discharge path of the second condenser, and valves are installed at the input and output terminals of the dryer to replace the dryer. And to block the flow path.

On the other hand, a coolant amount controller is installed on the output end side of the dryer to adjust the flow rate of the coolant, and a temperature sensor is installed on the evaporator to stop the entire system when sensing the temperature of the evaporator to detect an abnormal temperature. .

However, the prior art as described above has the following problems.

The prior art serves to liquefy the high temperature and high pressure gas refrigerant discharged from the compressor (1) to the medium temperature and high pressure liquid refrigerant by the external air blown by the blower fan (4), Since the first condenser 3 is installed separately in the outdoors, the part in which the compressor 1 is installed and the part in which the first condenser 3 is installed are separated into indoors and outdoors, which causes difficulties in the installation structure of the worker.

In the related art, the gas refrigerant passing through the first condenser 3 is condensed by the outside air generated by the blower fan 4, so that the condensation performance may be deteriorated.

 The present invention has been made to solve the above problems, it is possible to install the product more easily by installing the built-in with all the other components in a single case without installing a heat exchanger that acts as a condensation outdoors. It can be carried out, condensing the high-temperature high-pressure gas refrigerant passing through the heat exchanger, which plays a role of condensation using cold water, and can generate and supply only cooling water, and additionally to generate and supply cooling water and hot water at the same time It is an object to provide a cooling water or hot water generation system using a heat pump.

Cooling water or hot water generation system using a heat pump according to the present invention for achieving the above object is a compressor for compressing and discharging the heat exchange medium; A first condenser condensing the heat exchange medium by receiving heat exchange medium discharged from the compressor to exchange heat with cold water forcedly supplied from the outside; First and second evaporators installed in parallel to evaporate the heat exchange medium discharged from the first condenser, and connected in line with the compressor; A pair of throttling means for expanding the heat exchange medium discharged from the first condenser to flow into the first and second evaporators, respectively; And a first opening / closing means for opening or closing a flow path of a line to allow the heat exchange medium discharged from the first condenser to flow or shut off to each of the throttling means, wherein either one of the first and second evaporators has an interior therein. A cold water line is installed to allow water to be forcibly supplied from the outside of the furnace and to exchange heat with the heat exchange medium of any one of the selected first and second evaporators to discharge cold water having a low temperature. The other one of the evaporator is a circulation line for allowing the cold water discharged from the first condenser to be introduced therein and then heat exchanged with the heat exchange medium of any one of the selected first and second evaporators and circulated to the first condenser. It is characterized by being installed.

Hereinafter, with reference to the accompanying drawings a preferred embodiment of the cooling water or hot water generation system using a heat pump according to the present invention will be described in detail.

1 is a cooling water or hot water generation system using a heat pump.

The present invention is largely the compressor (1), the first condenser (4), the first and second evaporator (15, 18), the throttling means (14) (17), the first opening and closing means, cold water line 40 and a circulation line 45.

The compressor 1 serves to compress and discharge the heat exchange medium.

Here, the heat exchange medium generally refers to a medium capable of heat exchange including a refrigerant used in an air conditioner, and in the working part of the present invention, the term "coolant" will be replaced with the term "coolant".

The first condenser 4 serves to condense the heat exchange medium by receiving heat exchange medium discharged from the compressor 1 so as to exchange heat with cold water forcedly supplied from the outside.

The first and second evaporators 15 and 18 are installed in parallel to evaporate the heat exchange medium discharged from the first condenser 4 and are connected in line with the compressor 1.

The throttling means 14 and 17 are formed in pairs, and expand the heat exchange medium discharged from the first condenser 4 so as to flow into the first and second evaporators 15 and 18, respectively.

As the throttling means 14 and 17, both a variable capacity expansion valve and a fixed expansion valve can be used.

The first opening and closing means 13 and 16 open or close the flow path of the line so that the heat exchange medium discharged from the first condenser 4 flows or is blocked to each of the throttling means 14 and 17. Play a role.

The present invention provides a heat exchange medium of any one of the first and second evaporators selected after allowing water to be supplied from the outside into one of the first and second evaporators 15 and 18. The cold water line 40 is installed to exchange heat of cold water having a low temperature so that the cold water discharged from the first condenser 4 is introduced into another one of the first and second evaporators. Thereafter, a circulation line 45 is circulated with the heat exchange medium of any one of the selected first and second evaporators and circulated to the first condenser 4.

Here, in the present invention, the cold water line 40 is to be installed in the second evaporator 18, and the circulation line 45 is to be installed in the first evaporator 15.

Here, reference numeral 2 denotes an oil separator, and reference numeral 6 denotes a valve for blocking a flow path of a line in order to allow cold water to be introduced or blocked from the outside.

Reference numeral 5 denotes a pump for forcibly feeding cold water, numeral 10 denotes a receiver tank, and numeral 11 denotes a liquid level gauge configured to visually observe the bubbles and droplets of the refrigerant flowing in the line. According to the amount of refrigerant to be confirmed.

Reference numeral 12 denotes a core dryer that filters impurities in the refrigerant.

In addition, reference numeral 21 denotes a liquid separator, which prevents liquid refrigerant from flowing into the compressor to prevent liquid hammer (noise), and allows the compressor to operate smoothly.

The components described with reference numerals above are components that are commonly used.

The opening and closing means 13, 16, 29, 28, 9, 8 and the valve 6 described so far preferably use a solenoid valve.

Referring to the operation of the present invention configured as described above is as follows.

Here, before explaining the operation of the present invention, the solid line (-) represents the direction in which the refrigerant flows, the dashed-dotted line represents the line through which the hot water flows, and the dotted line represents the line through which the cold water flows. The dashed line shows the line through which the coolant flows.

First, when the compressor 1 is driven, the refrigerant compressed at high temperature and high pressure from the compressor 1 is separated through oil through the oil separator 2, and then flows into the first condenser 4 and then passes through the inside thereof. It flows through the receiver tank (10)-> liquid level gauge (11)-> core dryer (12).

At this time, when the compressor 1 starts to be driven and the valve 6 is opened and the pump 5 is driven, cold water (see a single dotted line) from the outside is forced into the first condenser 4. It is discharged through the interior, and then circulates through the interior of the first evaporator 15 along the circulation line 45 again into the first condenser (4).

In this case, when the sensing means (not shown) detects that the cold water is completely filled in the circulation line 45, the valve 6 is closed.

In this case, the cold water is repeatedly circulated in the circulation line 45.

In the above state, in the first condenser 4, the high temperature high pressure refrigerant and the cold water discharged to the compressor 1 pass through different flow paths, and heat exchange with each other.

Then, the refrigerant discharged through the first condenser 4 In addition to condensation at low temperature and high pressure, the cold water passes through the first evaporator 15 in a state where the temperature is raised to a high temperature.

That is, the refrigerant in the first condenser 4 is condensed by cold water.

On the other hand, the refrigerant passing through the first condenser 4 is introduced into the first evaporator 15 and the second evaporator 18, before the refrigerant flows into the first and second evaporators 15, 18 1 Since the opening / closing valves 16 and 17 are in an open state, they pass through the throttling means 17 and 18 first.

The refrigerant passing through the throttling means (17, 18) is changed to the state of the liquid refrigerant in the low temperature low pressure state.

The refrigerant changed into the state of the liquid refrigerant is evaporated while passing through the first and second evaporators 15 and 18 to change into a gaseous refrigerant.

After the refrigerant phase-changed in the gas state as described above passes through the first and second evaporators 15 and 18, the liquid is separated through the liquid separator 21, and only the gaseous refrigerant is returned to the compressor 1. .

Here, water is forcibly supplied to the cold water line 40 installed in the second evaporator 18 by a pump 19 from the outside, and the water flows along the cold water line 40 while being at a low temperature in the second evaporator. The coolant, which is water of cold water having a low temperature, is discharged by heat exchange with the refrigerant of the refrigerant.

This makes it possible to obtain cooling water (see double dotted line).

The above description has been given of obtaining cooling water using the system of the present invention.

On the other hand, the present invention may further include hot water generating means provided between the compressor (1) and the first condenser (4) in the configuration as described above.

That is, the present invention can be used to generate cold water and hot water at the same time.

The hot water generating means includes a second opening and closing means 29, a third opening and closing means 28, and a second condenser 3.

The second opening / closing means 290 is installed on the line 29a connecting the compressor 1 and the first condenser 4 to open or close the flow path of the line 29a so that the heat exchange medium flows or is blocked. It plays a role.

The third opening and closing means 28 is installed on the branching line 28a which is branched in parallel to the line 29a on which the second opening and closing means 29 is installed, so that the heat exchange medium flows or is blocked. It serves to open or close the flow path of 28a).

The second condenser 3 is installed on the branch line 28a between the third opening / closing means 28 and the first condenser 4 to discharge the heat exchange medium discharged from the compressor 1 to the first condenser ( By condensing the heat exchange medium with the cold water of a predetermined temperature discharged from the branch 4) and serves to discharge the cold water in the hot water state.

Referring to the operation of the hot water generating means having the configuration as described above are as follows.

First, when the flow path of the branch line 28a is opened by the opening and closing means 28 and the line 29a is closed by the opening and closing means 29, the high temperature and high pressure refrigerant discharged from the compressor 1 The second condenser 3 passes through the first condenser 4.

At this time, part of the cold water at a predetermined temperature discharged from the first condenser 4 is introduced into the second condenser 3 and discharged to the outside.

In the second condenser 3, the heat exchange medium discharged from the compressor 1 is condensed with the cold water at a predetermined temperature discharged from the first condenser 4 to condense the heat exchange medium. Cold water is discharged into hot water (see dashed line).

Thus, in the present invention, cold water and hot water can be used simultaneously.

Here, the high temperature and high pressure refrigerant passing through the second condenser 3 is condensed primarily by a heat transfer ring with cold water, and the first condensed refrigerant passes through the first condenser 4 to exchange heat with cold water. This results in secondary (recondensation) condensation.

When cold water and hot water are used at the same time as described above, the valve 6 should always be in an open state so that the cold water continuously flows into the first condenser 4.

In this case, when the valve 6 is always open, as shown in the drawings, the circulation line 45 is a cold water inlet line 46 in which the valve 6 and the pump 5 are installed. Since the connection is installed so as to join the phase, the cold water can be flowed back to the circulation line 45 to prevent this may be installed on the circulation line 45 check valve (7).

On the other hand, when the flow path of the branch line 28a is closed by the opening and closing means 28 and the line 29a is opened by the opening and closing means 29, the high temperature and high pressure refrigerant discharged from the compressor 1 It does not flow to the second condenser 3 side and flows into the first condenser 4.

In this case, the same condition as that in which the above-mentioned hot water generating means is not provided becomes a state in which only cold water can be generated as described above.

On the other hand, the present invention is provided with a hot water generating means as described above is cold water of a predetermined temperature discharged from the first condenser 4 is branched flows to the first condenser 3, the rest of the first evaporator 15 It is explained to branch to.

In the above configuration, the fourth opening and closing means 9 for opening and closing the flow path so that the cold water at a predetermined temperature discharged from the first condenser 3 flows to or is blocked by any one of the first and second evaporators 15 and 18. And a fifth opening / closing means (8) for opening and closing the flow path to allow the cold water at a predetermined temperature discharged from the first condenser (3) to flow or block the second condenser (3). Cold water at a predetermined temperature discharged from (4) can be selectively sent only to the first condenser (3) or only to the first evaporator (15).

That is, when only the fourth opening and closing means 9 is opened, cold water flows only to the first evaporator 15, and when only the fifth opening and closing means 8 is opened, cold water flows only to the first condenser 3. It will be.

Meanwhile, the present invention prevents the heat exchange medium in the first condenser 4 from flowing back to the second condenser 3 in the branch line 28a and the second condenser 3. A one-way valve 30 is provided to flow only to the first condenser 4.

In addition, supplemental water supply means 22 is further provided to supply supplemental water into any one of the first and second evaporators connected to the first condenser 4.

The replenishment water supply means 22 is to replenish the water when the water is insufficient.

Here, reference numeral 20 denotes a check valve so that the cold water in the circulation line 45 does not flow back to the supplementary water supply means 22.

As described above, according to the present invention, it is possible to install the product more easily by allowing the built-in installation together with all the other components in a single case without installing the heat exchanger serving as a condensation outdoors, The high temperature and high pressure gas refrigerant passing through the heat exchanger, which plays a role of condensation, is condensed using cold water, and only cooling water can be generated and supplied, and additionally, cooling water and hot water can be generated and supplied at the same time.

Claims (6)

A compressor (1) for compressing and discharging the heat exchange medium; A first condenser (4) for condensing the heat exchange medium by receiving heat exchange medium discharged from the compressor (1) to exchange heat with cold water forcedly supplied from the outside; First and second evaporators (15) (18) installed in parallel to evaporate the heat exchange medium discharged from the first condenser (4) and connected in line with the compressor (1); A pair of throttling means (14) (17) for expanding the heat exchange medium discharged from the first condenser (4) to flow into the first and second evaporators (15) (18), respectively; It includes a first opening and closing means for opening or closing the flow path of the line so that the heat exchange medium discharged from the first condenser (4) flows or is blocked to each of the throttling means (14, 17), One of the first and second evaporators is introduced into the water forcibly supplied from the outside and then heat exchanged with the heat exchange medium of any one of the selected first and second evaporators to discharge the cold water of low temperature Cold water line 40 is installed, Cold water discharged from the first condenser 4 is introduced into another one of the first and second evaporators, and then heat-exchanged with any one of the selected first and second evaporators to exchange heat with the first condenser. Cooling water or hot water generation system using a heat pump, characterized in that the circulation line circulated to circulate by (4) is installed. The method of claim 1, Cooling water or hot water generating system using a heat pump, characterized in that it further comprises a hot water generating means provided between the compressor (1) and the first condenser (4). The method of claim 2, The hot water generating means, Second opening / closing means (29) installed on the line (29a) connecting the compressor (1) and the first condenser (4) to open or close the flow path of the line (29a) so that the heat exchange medium flows or is blocked. Wow; It is installed on the branch la 28a which is branched in parallel to the line 29a in which the second opening and closing means 29 is installed to open or close the flow path of the branch line 28a so that the heat exchange medium flows or is blocked. Third opening and closing means 28 and; Predetermined discharge of the heat exchange medium discharged from the compressor (1) installed on the branch line (28a) between the third opening and closing means 28 and the first condenser (4) Cooling water or hot water generation system using a heat pump comprising a second condenser (3) for condensing the heat exchange medium by the heat exchange with the cold water of the temperature and the cold water is discharged in a hot water state. The method of claim 3, wherein Fourth opening / closing means (9) for opening and closing a flow path such that cold water having a predetermined temperature discharged from the first condenser (3) flows or is blocked by any one of the first and second evaporators (15) (18); The heat pump further comprises a fifth opening and closing means (8) for opening and closing the flow path so that the cold water of a predetermined temperature discharged from the first condenser (3) flows to the second condenser (3) or blocked. Cooling water or hot water generation system using. The method according to claim 3 or 4, The branch line 28a prevents the heat exchange medium in the first condenser 4 from flowing back to the second condenser 3 and flows only from the second condenser 3 to the first condenser 4. Cooling water or hot water generation system using a heat pump, characterized in that the one-way valve 30 is provided. The method according to any one of claims 1 to 4, Cooling water or hot water generation using a heat pump, characterized in that the supplementary water supply means 22 is further provided to supply supplemental water into any one of the first and second evaporators connected to the first condenser (4). system.

Images