CN201621785U

CN201621785U - Two-stage dehumidifier

Info

Publication number: CN201621785U
Application number: CN2010201217662U
Authority: CN
Inventors: 熊晓强
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-02-25
Filing date: 2010-02-25
Publication date: 2010-11-03
Anticipated expiration: 2020-02-25

Abstract

The utility model relates to a dehumidifier, in particular to a two-stage dehumidifier, comprising two groups of independent refrigerating systems. Air to be dehumidified is dehumidified through two groups of dehumidifying devices, i.e. the air to be dehumidified sequentially passes through a first group of evaporators, a second group of evaporators and a second group of condensers, and is finally discharged through a first group of condensers. The utility model has simple and reasonable structural design. The second group of condensers is better cooled so that the temperature of the second group of evaporators is lower than that of the first groups of evaporators, two-stage dehumidification is better realized, and the dehumidifying effect is improved. In addition, the two-stage dehumidifier can normally dehumidify air under the condition that the relative humidity of the air is lower.

Description

A kind of twin-stage dehumidifier

Technical field

The utility model relates to a kind of dehumidifier, relates to a kind of twin-stage dehumidifier specifically.

Background technology

Now family expenses or commercial monoblock type dehumidifier system all adopt two heat exchangers of forward and backward distribution as condenser and evaporimeter, same air stream removes water for cooling through evaporimeter earlier and heats by condenser, the dry air that obtains heating, make the condensation of refrigerant in the condenser simultaneously, the water at low temperature of removing enters water storage tank or discharges outdoor by drainpipe.This heat exchanger distributes, because the heat of condenser is greater than the cold of evaporimeter, the cold part that evaporimeter produces is taken away by condensate water for latent cold, remaining apparent cold but air, this part cooling air is less with respect to the heat of condenser, and is unfavorable to the condenser cooling effect, can cause the compressor operating load to increase, the dehumidifier power consumption is increased, and dehumidifying effect descends.The distribution mode of therefore existing dehumidifier heat exchanger is difficult to realize efficient dehumidifying, also is difficult to realize dehumidify under the lower situation of relative air humidity simultaneously.

Summary of the invention

Therefore, the purpose of this utility model is to overcome the defective that exists in the above-mentioned prior art, and a kind of twin-stage dehumidifier is provided, and its energy is fully utilized, and realizes efficiently dehumidifying, also can normally dehumidify under the lower situation of relative air humidity simultaneously.

The purpose of this utility model is to realize like this.

A kind of twin-stage dehumidifier, comprise two groups of independently refrigeration system compositions, first group of dehydrating unit that connects by compressor, condenser, throttle capillary tube, evaporimeter respectively and constitute, second group of dehydrating unit that connects by compressor, condenser, throttle capillary tube, evaporimeter respectively and constitute, dehumidified air is to dehumidify by two groups of dehydrating units, described dehumidified air is at first by first group of evaporimeter, again by second group of evaporimeter, by second group of condenser, discharge by first group of condenser at last then.

Technique scheme also can be made to the following further improve.

The precooling condenser of having connected between described second group of compressor outlet to the second group condenser air inlet.

Be provided with a cross valve between described precooling condenser gas outlet and second group of compressor inlet, precooling condenser gas outlet is connected with the high-pressure mouth of cross valve, second group of compressor inlet is connected with the low pressure port of cross valve, and two other of cross valve mouthful is connected with the gas outlet of second group of condenser air inlet and second group of evaporimeter respectively.

The utility model structural design advantages of simple, because second group of condenser cooled off preferably, so second group of evaporator evaporation temperature is lower than first group of evaporator temperature, realize two stage dehumidify preferably, improved effect on moisture extraction, under the lower situation of relative air humidity, also can normally dehumidify simultaneously.

Description of drawings

Accompanying drawing 1 is embodiment 1 a structural principle schematic diagram.

Accompanying drawing 2 is embodiment 2 structural principle schematic diagrames.

Accompanying drawing 3 is embodiment 3 structural principle schematic diagrames.

Accompanying drawing 4 is embodiment 4 structural principle schematic diagrames.

The specific embodiment

The utility model is described in further detail below by embodiment and accompanying drawing.

Embodiment 1, with reference to Fig. 1.A kind of twin-stage dehumidifier, comprise two groups of independently refrigeration system compositions, first group of dehydrating unit that connects by compressor 1, condenser 3, throttle capillary tube 8, evaporimeter 6 respectively and constitute, second group of dehydrating unit that connects by compressor 2, condenser 4, throttle capillary tube 7, evaporimeter 5 respectively and constitute, dehumidified air is to dehumidify by two groups of dehydrating units, described dehumidified air is at first by first group of evaporimeter 6, again by second group of evaporimeter 5, by second group of condenser 4, discharge by first group of condenser 3 at last then.

First group of refrigerant dehumidification system: high temperature, the high-pressure gaseous refrigerant that discharge compressed machine 1 compression back, enter condenser 3 condensations, cold-producing medium becomes the liquid refrigerant of middle temperature, high pressure, enter the liquid refrigerant that becomes low temperature, low pressure after throttle capillary tube 8 throttlings again, enter evaporimeter 6 evaporations, the liquid refrigerant of low temperature, low pressure becomes low pressure behind the evaporation and heat-exchange in evaporimeter 6, the cryogenic gaseous cold-producing medium is got back to compressor 1 return-air mouth by evaporimeter 6 outlets.Second group of refrigerant dehumidification system: high temperature, the high-pressure gaseous refrigerant that discharge compressed machine 2 compression backs, enter condenser 4 condensations, cold-producing medium becomes the liquid refrigerant of middle temperature, high pressure, enter the liquid refrigerant that becomes low temperature, low pressure after throttle capillary tube 7 throttlings again, enter evaporimeter 5 evaporations, the liquid refrigerant of low temperature, low pressure becomes low pressure behind the evaporation and heat-exchange in evaporimeter 5, the cryogenic gaseous cold-producing medium is got back to compressor 2 return-air mouths by evaporimeter 5 outlets.

Dehumidified air is at first by first group of higher evaporimeter 6 of temperature, cooling is also removed portion of water, again by second group of lower evaporimeter 5 of temperature, cool off once more and remove moisture, Cryogenic air is by second group of condenser 4 then, discharge by first group of condenser 3 at last, second group of condenser 4 cooling effect is better than first group of condenser 3 cooling effect, such second group of evaporator evaporation temperature is lower than first group of evaporator temperature, realize two stage dehumidify preferably, improved effect on moisture extraction, under the lower situation of relative air humidity, also can normally dehumidify simultaneously.

Embodiment 2, with reference to accompanying drawing 2.Embodiment 2 is with the difference of embodiment 1: the precooling condenser 9 of having connected between described second group of compressor, 2 gas outlet to the second group condenser 4 air inlets.

For good dehumidification, must be under the condition of evaporimeter frost-free, evaporating temperature is low more good more, condenser condenses is effective in the refrigeration system, can reduce evaporating temperature, effectively save energy, precooling condenser 9 can strengthen the condensation effect of second group of condenser 4 and first group of condenser 3.

Embodiment 3, with reference to accompanying drawing 3.The difference of embodiment 3 and embodiment 2 is: be provided with a cross valve 10 between described precooling condenser 9 gas outlets and second group of compressor 2 air inlet, precooling condenser 9 gas outlets are connected with the high-pressure mouth of cross valve 10, second group of compressor 2 air inlet is connected with the low pressure port of cross valve 10, and two other mouthful of cross valve 10 is connected with the gas outlet of second group of condenser 4 air inlet and second group of evaporimeter 5 respectively.

Because second group of condenser 4 condensation effect be good, may cause second group of evaporimeter 5 frosting, in this case can be by the condensation evaporation function of cross valve 10 second group of condenser 4 of conversion and second group of evaporimeter 5, make the moisture in the dehumidified air can frosting.

Claims

1. twin-stage dehumidifier, comprise two groups of independently refrigeration system compositions, first group of dehydrating unit that connects by compressor, condenser, throttle capillary tube, evaporimeter respectively and constitute, second group of dehydrating unit that connects by compressor, condenser, throttle capillary tube, evaporimeter respectively and constitute, dehumidified air is to dehumidify by two groups of dehydrating units, it is characterized in that: described dehumidified air is at first by first group of evaporimeter, again by second group of evaporimeter, by second group of condenser, discharge by first group of condenser at last then.

2. according to the described a kind of twin-stage dehumidifier of claim 1, it is characterized in that: the precooling condenser of having connected between described second group of compressor outlet to the second group condenser air inlet.

3. according to the described a kind of twin-stage dehumidifier of claim 2, it is characterized in that: be provided with a cross valve between described precooling condenser gas outlet and second group of compressor inlet, precooling condenser gas outlet is connected with the high-pressure mouth of cross valve, second group of compressor inlet is connected with the low pressure port of cross valve, and two other of cross valve mouthful is connected with the gas outlet of second group of condenser air inlet and second group of evaporimeter respectively.