CN212362341U - Double-fan combined air conditioning unit with independent cold source - Google Patents

Abstract

The utility model discloses a double-fan combined air conditioning unit with an independent cold source, wherein a cabinet body of the air conditioning unit is provided with an air inlet, an air supply outlet and an air return inlet, and a primary filter, a first refrigeration coil, a first heating coil, a first filter, a first centrifugal fan, a second refrigeration coil, a second heating coil, an auxiliary heating source, a humidifier, a second centrifugal fan and a second filter are arranged in the cabinet body; the air conditioner outdoor unit is internally provided with a compressor and a condenser, a first refrigerating coil outlet and a second refrigerating coil outlet are connected with an inlet of the compressor, an outlet of the compressor is connected with an inlet of the condenser, an inlet of the first heating coil and an inlet of the second heating coil, an outlet of the condenser is connected with an outlet of the first heating coil and an outlet of the second heating coil, the condenser is divided into one path which is connected with the inlet of the first refrigerating coil through a first throttling device, and the other path which is connected with the inlet of the second refrigerating coil through a second throttling device. The utility model discloses reinforcing cooling dehumidification ability, energy-conserving operation, double fan make it have stronger adaptability.

Description

Double-fan combined air conditioning unit with independent cold source

Technical Field

The utility model relates to a modular air conditioning unit especially relates to a take double fan combination formula air conditioning unit of independent cold source.

Background

Along with the increasing living standard of people, the requirements of people on living and working environments are higher and higher, and especially the requirements on fresh air and thermal comfort are more and more emphasized. At present, for places which are not easy to set or use a concentrated cold source for a long time and have higher requirements on indoor temperature and humidity, such as high-grade villas, non-exclusive small hotels, high-grade office areas in a working normal state and the like, most of air conditioning systems of the places have the following defects:

when a split air conditioner or a multi-split air conditioner is adopted, an air conditioning system cannot provide fresh air, the fresh air is usually obtained by means of natural ventilation of doors and windows or simple mechanical ventilation, so that the loss of air conditioning cooling capacity is wasted, the energy consumption of the air conditioner is increased, the fresh air directly enters indoors without being treated, outdoor pollutants (such as dust, automobile tail gas, PM2.5 and the like) and noise are brought indoors, and in humid seasons in southern areas, a large amount of fresh air which is not controlled and treated enters indoors, and the phenomenon of indoor moisture regain and mildew is aggravated; if an independent fresh air system is arranged, a set of air conditioning system needs to be added, so that initial investment is increased, a special fresh air machine room needs to be arranged, and an air pipe arrangement space is reserved.

When the fan coil and the independent fresh air system or the full air system are adopted, a centralized cold source is usually used, but the working and rest time of the places such as the non-independent small hotel, the high-grade office area in the normal overtime state and the like is inconsistent with that of other areas of the same air conditioning system, so that the serious 'big horse-drawn trolley' phenomenon exists when the air conditioning system is used in the places at night or other non-uniform time periods, the inefficient operation of the air conditioning system is caused, the air conditioning use cost is obviously higher than usual, and the energy conservation and the economy are realized.

The defects of the existing air conditioning system influence the normal and efficient operation of places such as high-grade villas, non-independent small hotels, high-grade office areas with overtime normality and the like to a certain extent, so that a set of combined air conditioning unit capable of overcoming the defects is needed to be designed to meet the special requirements of the places.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an improve cooling dehumidification effect, reduce power consumption, realize energy-conserving operation, independent regulation and control of humiture, installation arrange nimble, strong adaptability's double fan combined air conditioning unit of taking independent cold source.

The purpose of the utility model is realized through the following technical measures: a double-fan combined air conditioning unit with an independent cold source is characterized by comprising a controller, an air conditioning unit cabinet body and an air conditioning outdoor unit, wherein the air conditioning unit cabinet body comprises a cabinet and all components arranged in the cabinet, the cabinet is provided with an air inlet, an air supply outlet and a return air inlet communicated with an indoor environment, each component is sequentially provided with a primary filter, a first refrigeration coil, a first heating coil, a first filter, a first centrifugal fan, a second refrigeration coil, a second heating coil, an auxiliary heating source, a humidifier, a second centrifugal fan and a second filter from the air inlet to the air supply outlet, the components divide the internal space of the cabinet into a plurality of compartments, and the return air inlet is positioned between the first filter and the first centrifugal fan; the air conditioner outdoor unit is internally provided with a compressor and a condenser, an outlet of the first refrigeration coil and an outlet of the second refrigeration coil are respectively connected with an inlet of the compressor, an outlet of the compressor is respectively connected with an inlet of the condenser, an inlet of the first heating coil and an inlet of the second heating coil, an outlet of the condenser is connected with an outlet of the first heating coil and an outlet of the second heating coil and is divided into two pipelines, one pipeline is connected with the inlet of the first refrigeration coil through a first throttling device, and the other pipeline is connected with the inlet of the second refrigeration coil through a second throttling device, so that a circulation loop with a refrigerant flowing inside is formed.

The utility model discloses from taking independent cold source, the installation is arranged in a flexible way, adopt direct evaporation refrigeration coil to cool off the dehumidification to the new trend, the cooling dehumidification ability of air conditioning unit has been strengthened, and set up the condensation heat of two heating coil make full use of air condensing units, not only can reduce the emission of condensation heat, do benefit to the environmental protection, and effectively avoided cold and hot offset phenomenon, reduce power consumption, can improve the efficiency from taking the cold source simultaneously greatly, realize energy-conserving operation, still can realize the independent control to the humiture. The double-fan arrangement greatly improves the adjusting function of the air quantity and the air pressure of the combined air conditioning unit and has stronger adaptability. The utility model is suitable for a to the higher place of humiture requirement, specially adapted is difficult for setting up the place of concentrating the cold source, can satisfy the demand of user to new trend and thermal comfort all the year round.

As an optimal implementation mode of the utility model, the export of compressor with be equipped with first solenoid valve on the connecting pipe between the import of first heating coil the export of compressor with be equipped with the second solenoid valve on the connecting pipe between the import of second heating coil the export of compressor with be equipped with the third solenoid valve on the connecting pipe between the import of condenser, first, second and third solenoid valve are connected with the controller respectively to can adjust the heat dissipation capacity through first heating coil, second heating coil and condenser in a flexible way, in order to satisfy the utility model discloses moderate degree heated air's demand.

As a preferred embodiment of the present invention, the first filter is a middle-effect filter, and is located the upper air side of the first centrifugal fan, for filtering the outdoor fresh air, the second filter is a middle-effect filter or a sub-high efficiency filter, and is located the lower air side of the second centrifugal fan, and filters the mixed air of the fresh air and the return air.

As a preferred embodiment of the present invention, the compressor is a variable frequency compressor, and the refrigerating capacities of the first and second refrigerating coils can be adjusted in due time according to the change of the system load; the first centrifugal fan and the second centrifugal fan are frequency conversion fans, and the air supply volume and the air pressure of the combined air conditioning unit can be adjusted in real time according to the change of system load and resistance.

In order to respond to the requirements of energy conservation and environmental protection energetically, the refrigerant is an environment-friendly refrigerant as a preferred embodiment of the present invention.

The auxiliary heating source of the utility model is an electric heating device or a hot water coil or a steam coil. If a stable, reliable and available hot water source or steam source exists on site, the hot water coil or the steam coil is preferentially adopted for reheating, and if the hot water source or the steam coil does not exist, the electric heating device is selected for reheating.

The utility model discloses the air intake is equipped with first electronic blast gate the return air inlet is equipped with the electronic blast gate of second the air outlet is equipped with the electronic blast gate of third, first, second and the electronic blast gate of third are connected with the controller respectively. The air supply and return ratio and the air supply quantity of the combined air conditioning unit can be adjusted in real time by adjusting the opening of the electric air valve so as to adapt to the change of air supply requirements.

Compared with the prior art, the utility model has the advantages of following showing:

the utility model discloses need not external cold source from taking independent cold source, from becoming complete air conditioning system, the installation is arranged in a flexible way, and the suitability is strong.

A second holder the utility model discloses a direct evaporation refrigeration coil pipe carries out the dehumidification of cooling down alone to the new trend and handles, not only can obtain microthermal cold source than freezing water coil pipe, and cooling dehumidification ability is stronger, and dehumidification effect is better, adjusts through inverter compressor and throttling arrangement moreover, can further increase it to fresh air cooling dehumidification scope, ensures simultaneously that second refrigeration coil pipe is the dry coil pipe, and modular air conditioning unit is in and does the operating condition running state.

The utility model discloses set up two heating coil, replaced electric heating, not only can make full use of air condensing units's condensation heat, reduce the emission of condensation heat, do benefit to the environmental protection, effectively avoided cold and hot offset phenomenon moreover, reduce power consumption, heating coil is in microthermal environment simultaneously, can improve the efficiency from taking the cold source greatly, realizes energy-conserving operation.

The utility model discloses a first refrigeration coil pipe (or humidifier) realize the humidity control to the air supply, realize the temperature control to the air supply through first heating coil pipe and second refrigeration coil pipe (or second heating coil pipe and auxiliary heating source), consequently, the utility model discloses possess the independent regulation and control function of humiture.

The utility model discloses a double fan and can frequency conversion regulation, improved the volume of wind of combined air conditioning unit and the regulatory function of wind pressure greatly, had stronger adaptability, and set up a plurality of electronic blast gates, can adjust new return air proportion and supply-air volume in a flexible way, especially in transition season, can realize the operation of full new trend; meanwhile, the variable frequency compressor is adopted, and the running state of the unit can be timely adjusted according to the load change of the tail end, so that the aim of energy-saving running is fulfilled to the maximum extent under the condition of ensuring indoor health and comfort.

Sixthly the utility model discloses can realize three kinds of mode such as refrigeration dehumidification, heating humidification, full new trend operation, can satisfy the demand of user to new trend and thermal comfort all the year round.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings.

Fig. 1 is a schematic view of the structure of the present invention.

Detailed Description

As shown in fig. 1, the present invention relates to a dual-fan combined air conditioning unit with independent cold source, which comprises a controller, an air conditioning unit cabinet 1 and an air conditioning outdoor unit 2, wherein the controller electrically controls the whole unit, the air conditioning unit cabinet 1 comprises a cabinet and components arranged in the cabinet, the cabinet is provided with an air inlet 4, an air outlet 18 and a return air inlet 10 communicated with the indoor environment, each component is provided with a primary filter 5, a first refrigeration coil 6, a first heating coil 8, a first filter 9, a first centrifugal fan 11 (a fresh air and return air mixing section of the first centrifugal fan 11 between the first filter 9 and the second refrigeration coil 12), a second refrigeration coil 12, a second heating coil 13, an auxiliary heating source 14, a humidifier 15, a second centrifugal fan 16 and a second filter 17 in sequence from the air inlet 4 to the air outlet 18, the components divide the internal space of the cabinet into a plurality of compartments, wherein, the return air inlet 10 is located between the first filter 9 and the first centrifugal fan 11 (the return air inlet 10 is communicated with the indoor environment and the fresh and return air mixing section inside the air conditioning unit cabinet 1). In this embodiment, the first filter 9 is a medium-efficiency filter, the second filter 17 is a medium-efficiency filter or a sub-high-efficiency filter, and both the first centrifugal fan 11 and the second centrifugal fan 16 are variable frequency fans. The auxiliary heating source 14 may be an electric heating device or a hot water coil or a steam coil, and if there is a stable, reliable, available hot water source or steam source on site, the hot water coil or the steam coil is preferably used for reheating, and if not, the electric heating device is selected for reheating.

A compressor 201 and a condenser 202 are arranged in the air conditioner outdoor unit 2, an outlet of the first refrigeration coil 6 and an outlet of the second refrigeration coil 12 are respectively connected with an inlet of the compressor 201, an outlet of the compressor 201 is respectively connected with an inlet of the condenser 202, an inlet of the first heating coil 8 and an inlet of the second heating coil 13, an outlet of the condenser 202 is connected with an outlet of the first heating coil 8 and an outlet of the second heating coil 13 together and is divided into two pipelines, one of the pipes is connected with the inlet of the first refrigerating coil 6 through a first throttling device 7a, and the other pipe is connected with the inlet of the second refrigerating coil 12 through a second throttling device 7b (so that the condenser 202, the first heating coil 8 and the second heating coil 13 are in a parallel state, and the first refrigerating coil 6 and the second refrigerating coil 12 are in a parallel state), thereby forming a circulation loop in which the refrigerant flows. In this embodiment, the refrigerant is an environmentally friendly refrigerant such as R134 a.

A first solenoid valve 19a is provided on a connection pipe between the outlet of the compressor 201 and the inlet of the first heating coil 8, a second solenoid valve 19b is provided on a connection pipe between the outlet of the compressor 201 and the inlet of the second heating coil 13, a third solenoid valve 19c is provided on a connection pipe between the outlet of the compressor 201 and the inlet of the condenser 202, and the first, second, and third solenoid valves are connected to a controller, respectively.

The air inlet 4 is provided with a first electric air valve 3a, the air return opening 10 is provided with a second electric air valve 3b, the air outlet 17 is provided with a third electric air valve 3c, and the first electric air valve, the second electric air valve and the third electric air valve are respectively connected with the controller.

The working principle of the utility model is as follows: outdoor air A entering the fresh air handling unit cabinet body 1 through the air inlet 4 is firstly filtered through the primary filter 5, the filtered air is cooled and dehumidified through the first refrigerating coil 6, wherein the refrigerant flow and the evaporation temperature of the first refrigerating coil 6 can be adjusted through the first throttling device 7a and the compressor 201, so that the cooling and dehumidifying capacity of the first refrigerating coil 6 on fresh air is adjusted, the cooled and dehumidified air is reheated and heated through the first heating coil 8 (the condensation heat of the air conditioning outdoor unit 2 is preferentially utilized, and the heating quantity of the first heating coil 8 can be adjusted through the first electromagnetic valve 19 a), then is filtered through the first filter 9, and then is mixed with indoor air C from the air return opening 10, the mixed air is firstly cooled through the second refrigerating coil 12 under the driving of the first centrifugal fan 11, wherein the refrigerant flow of the second refrigerating coil 12 can be adjusted through the second throttling device 7b and the compressor 201 And the evaporation temperature, thereby adjusting the cooling capacity of the second refrigeration coil 12 to the mixed air, then reheating and heating by the second heating coil 13 and the auxiliary heating source 14 (the heating capacity of the second heating coil 13 can be adjusted by the second electromagnetic valve 19B, when the heating capacity of the second heating coil 13 is insufficient, the auxiliary heating source 14 is started, when the heating capacity of the second heating coil 13 is sufficient, the redundant condensation heat is removed by the condenser 202, then passing through the humidifier 15 (the humidifier 15 is opened in the period of time when the mixed air needs to be humidified in winter or transition season, and is usually not used together with the first refrigeration coil 6), then being driven by the second centrifugal fan 16, being filtered by the second filter 17 to become the mixed air B, and finally blowing the mixed air B from the air supply outlet 18.

The working process of the utility model is as follows:

the method comprises the following steps of: when refrigeration dehumidification is required, for example, in hot summer or wet season (for example, "return to south" season or rainy season in south China), the utility model discloses start refrigeration dehumidification mode, compressor 201 starts, and humidifier 15 closes.

The utility model discloses the concrete working process of refrigeration dehumidification mode is: outdoor fresh air A enters the cabinet body 1 of the air conditioning unit through the air inlet 4, is firstly filtered through the primary filter 5, and then is cooled and dehumidified through the first refrigerating coil 6, wherein the cooling and dehumidifying capacity of the refrigerating coil 6 can be adjusted through the first throttling device 7a and the compressor 201, the cooled and dehumidified air is reheated and heated through the first heating coil 8, wherein the heating capacity of the first heating coil can be adjusted through the first electromagnetic valve 19a, then is filtered through the first filter 9, and then is mixed with indoor air C from the air return port 10, the mixed air is firstly cooled through the second refrigerating coil 12 under the driving of the first centrifugal fan 11, wherein the refrigerating capacity of the second refrigerating coil 12 can be adjusted through the second throttling device 7b and the compressor 201, and then is reheated and heated through the second heating coil 13, wherein, the amount of heat again of second heating coil 13 can be adjusted through second solenoid valve 19B (when second heating coil 13 heating capacity is not enough, start supplementary heating source 13 at this moment and supply the amount of heat again, when second heating coil 13 heating capacity is sufficient, unnecessary condensation heat is got rid of by condenser 202), later through humidifier 15 (out of work this moment), again under second centrifugal fan 16's drive, become mixed wind B after second filter 17 filters, blow off mixed wind B from supply-air outlet 18 at last, ensure to send into indoor air and satisfy new trend and thermal comfort requirement.

In the cooling and dehumidifying mode, the first throttling device 7a, the second throttling device 7b and the compressor 201 are used for comprehensively regulating the flow rate and the evaporating temperature of the refrigerant flowing through the first cooling coil 6 and the second cooling coil 12; the first solenoid valve 19a, the second solenoid valve 19b, and the third solenoid valve 19c are used to comprehensively regulate the flow of the refrigerant flowing through the first heating coil 8, the second heating coil 13, and the condenser 202; the first electric air valve 3a, the second electric air valve 3b and the third electric air valve 3c are used for adjusting the fresh air ratio and the return air ratio and the air supply quantity of the combined air conditioning unit.

The heating and humidifying mode is as follows: when the humidification that heats, for example in chilly winter, the utility model discloses start the humidification mode that heats, compressor 201 closes, and auxiliary heating source 14 and humidifier 15 open.

The utility model discloses the concrete working process of heating humidification mode is: outdoor fresh air A enters the cabinet body 1 of the air conditioning unit through the air inlet 4, is firstly filtered through the primary filter 5, then passes through the first refrigerating coil 6 (not working at this time) and the first heating coil 8 (not working at this time), then is filtered through the first filter 9, and then is mixed with indoor air C from the air return port 10, the mixed air firstly passes through the second refrigerating coil 12 (not working at this time) and the second heating coil 13 (not working at this time) under the driving of the first centrifugal fan 11, and then is heated and warmed through the auxiliary heating source 14, if a stable, reliable and available hot water source or steam source exists on site, the auxiliary heating source 14 preferentially adopts hot water or steam for heating, if the hot water source or the steam source does not exist, an electric heating device is selected for heating, the heating amount is adjustable, then the air conditioner is humidified through the humidifier 15, and the humidification mode can be selected according, and then, the air is filtered by a second filter 17 under the driving of a centrifugal fan 16 to form mixed air B, and finally, the mixed air B is blown out from an air supply outlet 18, so that the air sent into the room meets the requirements of fresh air and thermal comfort.

In the heating and humidifying mode, the electric regulator valve 20 is used to regulate the amount of humidification; the first electric air valve 3a, the second electric air valve 3b and the third electric air valve 3c are used for adjusting the fresh air ratio and the return air ratio and the air supply quantity of the combined air conditioning unit.

The operation mode of the fresh air is as follows: when the air is running with full fresh air, for example, in other periods except the above-mentioned seasons, the cooling dehumidification and the heating humidification are not required, and therefore, the compressor 201, the auxiliary heating source 14, and the humidifier 15 are all turned off, and the second electric damper 3b is turned off.

The utility model discloses the concrete working process of full new trend operation is: outdoor new trend A gets into the air conditioning unit cabinet body 1 through air intake 4 in, at first filter through primary filter 5, loop through first refrigeration coil 6 again (out of work this moment) and first heating coil 8 (out of work this moment), then filter through first filter 9, then under first centrifugal fan 11's drive, loop through second refrigeration coil 12 again (out of work this moment), second heating coil 13 (out of work this moment), auxiliary heating source 14 (out of work this moment), humidifier 15 (out of work this moment), after under second centrifugal fan 16's drive, obtain clean new trend B after filtering through second filter 17, blow off new trend B from supply-air outlet 18 at last, ensure to send into indoor new trend and satisfy the requirement.

In the full fresh air operation mode, the first centrifugal fan 11 and the second centrifugal fan 16 can be simultaneously started or only one of the centrifugal fans can be operated according to actual requirements; the first electric air valve 3a and the third electric air valve 3c are used for adjusting the fresh air volume.

The embodiments of the present invention are not limited to the above, according to the above-mentioned contents of the present invention, according to the common technical knowledge and the conventional means in the field, without departing from the basic technical idea of the present invention, the present invention can also make other modifications, replacements or changes in various forms, all falling within the scope of the present invention.

Claims (7)

1. A double-fan combined air conditioning unit with an independent cold source is characterized by comprising a controller, an air conditioning unit cabinet body and an air conditioning outdoor unit, wherein the air conditioning unit cabinet body comprises a cabinet and all components arranged in the cabinet, the cabinet is provided with an air inlet, an air supply outlet and a return air inlet communicated with an indoor environment, each component is sequentially provided with a primary filter, a first refrigeration coil, a first heating coil, a first filter, a first centrifugal fan, a second refrigeration coil, a second heating coil, an auxiliary heating source, a humidifier, a second centrifugal fan and a second filter from the air inlet to the air supply outlet, the components divide the internal space of the cabinet into a plurality of compartments, and the return air inlet is positioned between the first filter and the first centrifugal fan; the air conditioner outdoor unit is internally provided with a compressor and a condenser, an outlet of the first refrigeration coil and an outlet of the second refrigeration coil are respectively connected with an inlet of the compressor, an outlet of the compressor is respectively connected with an inlet of the condenser, an inlet of the first heating coil and an inlet of the second heating coil, an outlet of the condenser is connected with an outlet of the first heating coil and an outlet of the second heating coil and is divided into two pipelines, one pipeline is connected with the inlet of the first refrigeration coil through a first throttling device, and the other pipeline is connected with the inlet of the second refrigeration coil through a second throttling device, so that a circulation loop with a refrigerant flowing inside is formed.

2. The combined air conditioning unit with the independent cold source and the double fans as claimed in claim 1, wherein: the export of compressor with be equipped with first solenoid valve on the connecting pipeline between the import of first heating coil the export of compressor with be equipped with the second solenoid valve on the connecting pipeline between the import of second heating coil the export of compressor with be equipped with the third solenoid valve on the connecting pipeline between the import of condenser, first, second and third solenoid valve are connected with the controller respectively.

3. The combined air conditioning unit with the independent cold source as claimed in claim 2, wherein: the first filter is a medium-efficiency filter, and the second filter is a medium-efficiency filter or a sub-high-efficiency filter.

4. The combined air conditioning unit with the independent cold source and the double fans as claimed in claim 3, wherein: the compressor is a variable frequency compressor, and the first centrifugal fan and the second centrifugal fan are both variable frequency fans.

5. The combined air conditioning unit with the independent cold source and the double fans as claimed in claim 4, wherein: the refrigerant is an environmentally friendly refrigerant.

6. The combined air conditioning unit with the independent cold source and the double fans as claimed in claim 5, wherein: the auxiliary heating source is an electric heating device or a hot water coil or a steam coil.

7. The combined air conditioning unit with the independent cold source as claimed in any one of claims 1 to 6, wherein: the air inlet is provided with a first electric air valve, the air return inlet is provided with a second electric air valve, the air supply outlet is provided with a third electric air valve, and the first electric air valve, the second electric air valve and the third electric air valve are respectively connected with the controller.

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