CN207881049U - A kind of new wind turbine hybrid system of novel heat pump - Google Patents

Abstract

The utility model discloses a kind of new wind turbine hybrid system of novel heat pump, including heat pump and Fresh air handling units, heat pump includes compressor, Fresh air handling units include the forecooler set gradually on air inlet direction, evaporator and the first condenser, the outlet of compressor and the D mouths of four-way valve connect, the C mouths of four-way valve are connect with the first condenser, it is also associated with the second condenser, second condenser and the first condenser are connected with the first expansion valve and third expansion valve in turn respectively, first expansion valve and third expansion valve are connect with heat exchanger and the second expansion valve, second expansion valve is connect with evaporator, evaporator and heat exchanger are connect with the E of four-way valve mouths, the S mouths of four-way valve are connect with the entrance of compressor, it is respectively arranged with chilled(cooling) water return (CWR) in heat exchanger and forecooler.The heat pump of the utility model shares a compressor with Fresh air handling units, improves unit COP, has many advantages, such as that economical environment-protective, floor space are small, reduce Fresh air handling units noise.

Description

A New Heat Pump Fresh Air Composite System

technical field

The utility model belongs to the technical field of air conditioners, and in particular relates to a composite system of a novel heat pump and fresh air blower.

Background technique

In recent years, with the improvement of people's material life, people pay more and more attention to the indoor environment, especially the indoor air quality and comfort. However, the existing heat pump and the fresh air unit are respectively equipped with compressors. The fresh air unit has a large size and a large floor area, which is inconvenient to install, and the noise of the compressor is large, and the energy consumption is large in transitional seasons.

Utility model content

Purpose of the utility model: Aiming at the deficiencies in the prior art, the utility model provides a new composite system of heat pump and fresh air blower.

In order to achieve the above purpose, the utility model provides a new heat pump fresh air composite system, including a heat pump and a fresh air unit, the heat pump includes a compressor, and the fresh air unit includes a precooler, an evaporator, The compressor and the first condenser, the outlet of the compressor is connected to the D port of the four-way valve, the C port of the four-way valve is connected to the first condenser, and is also connected to the second condenser, and the first The second condenser and the first condenser are respectively connected with a first expansion valve and a third expansion valve in sequence, and both the first expansion valve and the third expansion valve are connected with the heat exchanger and the second expansion valve, and the second expansion valve The valve is connected to the evaporator, the evaporator and the heat exchanger are connected to the E port of the four-way valve, the S port of the four-way valve is connected to the inlet of the compressor, and the heat exchanger and the precooler There are cooling water circuits inside respectively.

Preferably, the first expansion valve, the second expansion valve and the third expansion valve are all electronic expansion valves.

Preferably, the heat exchanger is a plate heat exchanger.

Preferably, it also includes a control device, a supply air temperature sensor and a supply air humidity sensor. The control device collects and calculates the data of the temperature sensor and the humidity sensor, sends an adjustment instruction to the electronic expansion valve, drives the action of the electronic expansion valve, and changes the temperature of the electronic expansion valve. of the opening.

Preferably, a filter device is provided at the air inlet of the fresh air unit.

Beneficial effect: compared with the prior art, the utility model has the following advantages:

The heat pump of the utility model shares a compressor with the fresh air unit, improves the COP of the unit, has the advantages of saving and environmental protection, occupies a small area, reduces the noise of the fresh air unit, and the like.

Description of drawings

Fig. 1 is a schematic diagram of the composite system of the new heat pump and fresh air blower of the present invention.

Detailed ways

The utility model is further clarified below in conjunction with the specific drawings. The specific implementation mode is implemented on the premise of the technical solution of the utility model. It should be understood that these methods are only used to illustrate the utility model and not to limit the scope of the utility model.

As shown in Figure 1, the embodiment of the present utility model provides a new heat pump and fresh air blower composite system, the system includes a heat pump 1 and a fresh air unit 2, and the heat pump 1 includes a compressor 3, a four-way valve 7, a second condenser 8 and The heat exchanger 12; the fresh air unit 2 includes a precooler 4, an evaporator 5 and a first condenser 6 arranged sequentially in the air inlet direction, the outlet of the compressor 3 is connected to the D port of the four-way valve 7, and the four-way valve Port C of 7 is connected to the first condenser 6, port C of the four-way valve 7 is also connected to the second condenser 8, the second condenser 8 is connected to the first expansion valve 9, the first condenser 6 is connected to the third expansion valve The valve 11 is connected, the first expansion valve 9 and the third expansion valve 11 are connected with the heat exchanger 12 and the second expansion valve 10, the second expansion valve 10 is connected with the evaporator 5, and the evaporator 5 and the heat exchanger 12 are connected with the The E port of the four-way valve 7 is connected, the S port of the four-way valve 7 is connected with the inlet of the compressor 3, and the heat exchanger 12 and the precooler 4 are respectively provided with a cooling water circuit, and the cooling water circuit includes outlet water and return water. The cooling water circulation is realized through the water pipe 13 . In order to facilitate automatic temperature control, the first expansion valve 9 , the second expansion valve 10 and the third expansion valve 11 are all preferably electronic expansion valves. In order to improve heat exchange efficiency, the heat exchanger 12 is preferably a plate heat exchanger.

It also includes the control device, the air supply temperature sensor and the air supply humidity sensor. The control device collects and calculates the data of the temperature sensor and the humidity sensor, sends adjustment instructions to the electronic expansion valve, drives the action of the electronic expansion valve, and changes the opening of the electronic expansion valve. .

A filter device 14 is arranged at the air inlet of the fresh air unit, and the filter device 14 includes a preliminary filter screen and a high-efficiency filter screen to filter particulate matter in the air.

The working principle of the utility model is as follows:

Summer cooling and dehumidification process:

(1) Heat pump: the refrigerant compressed by the compressor 3 enters the second condenser 8 through the C port of the four-way valve 7 to condense, and then throttling through the first expansion valve 9, and the refrigerant coming out of the first condenser 6 Convergence enters the heat exchanger 12 for refrigeration, and finally returns to the compressor 3 through the ports E and S of the four-way valve;

(2) Fresh air fan: The fresh air is precooled and dehumidified by the precooler 4, and then dehumidified by the evaporator 5. The dehumidification effect of the evaporator 5 is determined by the opening of the second expansion valve 10, and then heated to the set temperature by the first condenser 6 Sent to the room, the air supply temperature is determined by the opening of the third expansion valve 11.

Heating and humidification process in winter:

(1) Heat pump: the four-way valve 7 is energized, the piston moves to the right under the action of pressure, D and E are connected, and the refrigerant compressed by the compressor 3 enters the heat exchanger 12 to condense through the E port of the four-way valve 7 Heat release, heat cold water, merge with the refrigerant throttled from the second expansion valve 10, then throttle through the first expansion valve 9, enter the second condenser 8 to absorb heat, and then throttle and suck with the third expansion valve 11 The hot refrigerant merges, and finally returns to the compressor 3 through the four-way valve 7C and S ports;

(2) Fresh air fan: The fresh air is preheated by the precooler 4, and then further heated by the evaporator 5. The heating temperature of the evaporator 5 is determined by the opening of the second expansion valve 10. If the heating temperature of the evaporator 5 is too high, the second expansion valve can be opened. The third expansion valve 11 performs appropriate cooling, and the cooling range is determined by the opening degree of the third expansion valve 11, and this measure has a lower priority;

Transition season:

The opening of the second expansion valve 10 and the third expansion valve 11 can be adjusted according to the parameters set by the user. If the load is small, the cooling water circuit can be directly closed and the refrigerant can be used for heating or cooling to reduce the loss of indirect heat exchange.

To sum up, the heat pump of the present utility model shares a compressor with the fresh air unit, improves the COP of the unit, has the advantages of saving and environmental protection, occupies a small area, and reduces the noise of the fresh air unit.

The above is only a preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made. Retouching should also be regarded as the scope of protection of the present utility model.

Claims (5)

1. A novel heat pump fresh air composite system, characterized in that it includes a heat pump and a fresh air unit, the heat pump includes a compressor, and the fresh air unit includes a precooler, an evaporator and a first Condenser, the outlet of the compressor is connected with the D port of the four-way valve, the C port of the four-way valve is connected with the first condenser, and also connected with the second condenser, the second condenser and The first condenser is respectively connected with a first expansion valve and a third expansion valve in sequence, and the first expansion valve and the third expansion valve are both connected with the heat exchanger and the second expansion valve, and the second expansion valve is connected with the The evaporator is connected, the evaporator and the heat exchanger are connected to the E port of the four-way valve, the S port of the four-way valve is connected to the inlet of the compressor, and the heat exchanger and the precooler are respectively provided with Cooling water circuit. 2. The novel combined heat pump and fresh air blower system according to claim 1, wherein the first expansion valve, the second expansion valve and the third expansion valve are all electronic expansion valves. 3. The novel heat pump fresh air blower composite system according to claim 1, wherein the heat exchanger is a plate heat exchanger. 4. The novel heat pump fresh air blower composite system according to claim 2, characterized in that: it also includes a control device, a supply air temperature sensor and a supply air humidity sensor, and the control device sends data to the electronic The expansion valve sends an adjustment command to drive the action of the electronic expansion valve and change the opening degree of the electronic expansion valve. 5. The novel combined heat pump and fresh air fan system according to claim 1, characterized in that: a filter device is provided at the air inlet of the fresh air unit.